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authorMicael Karlberg <[email protected]>2019-02-22 19:48:52 +0100
committerMicael Karlberg <[email protected]>2019-02-22 19:48:52 +0100
commita729949b8b1747e841e621477949f433e51e7645 (patch)
tree261b24ffde0ed1c2d12817a4d68a884718c5b5a6 /erts/emulator/nifs
parent9f324bf871ff2fd1bb8c7adbbfc47b22b0419a5d (diff)
parent1a1deb10194c2609fc0a1019518abfad40601cae (diff)
downloadotp-a729949b8b1747e841e621477949f433e51e7645.tar.gz
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Merge branch 'bmk/20190204/socket_as_nif/OTP-14831'
Diffstat (limited to 'erts/emulator/nifs')
-rw-r--r--erts/emulator/nifs/common/net_nif.c1683
-rw-r--r--erts/emulator/nifs/common/socket_dbg.c138
-rw-r--r--erts/emulator/nifs/common/socket_dbg.h55
-rw-r--r--erts/emulator/nifs/common/socket_int.h384
-rw-r--r--erts/emulator/nifs/common/socket_nif.c18649
-rw-r--r--erts/emulator/nifs/common/socket_tarray.c143
-rw-r--r--erts/emulator/nifs/common/socket_tarray.h47
-rw-r--r--erts/emulator/nifs/common/socket_util.c1658
-rw-r--r--erts/emulator/nifs/common/socket_util.h205
9 files changed, 22962 insertions, 0 deletions
diff --git a/erts/emulator/nifs/common/net_nif.c b/erts/emulator/nifs/common/net_nif.c
new file mode 100644
index 0000000000..fba9ee54fc
--- /dev/null
+++ b/erts/emulator/nifs/common/net_nif.c
@@ -0,0 +1,1683 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2018-2018. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ *
+ * ----------------------------------------------------------------------
+ * Purpose : The NIF (C) part of the net interface
+ * This is a module of miscellaneous functions.
+ * ----------------------------------------------------------------------
+ *
+ */
+
+#define STATIC_ERLANG_NIF 1
+
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+/* If we HAVE_SCTP_H and Solaris, we need to define the following in
+ * order to get SCTP working:
+ */
+#if (defined(HAVE_SCTP_H) && defined(__sun) && defined(__SVR4))
+#define SOLARIS10 1
+/* WARNING: This is not quite correct, it may also be Solaris 11! */
+#define _XPG4_2
+#define __EXTENSIONS__
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stddef.h>
+#include <ctype.h>
+#include <sys/types.h>
+#include <errno.h>
+#include <time.h>
+
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#ifdef HAVE_SYS_UIO_H
+#include <sys/uio.h>
+#endif
+
+#ifdef HAVE_NET_IF_DL_H
+#include <net/if_dl.h>
+#endif
+
+#ifdef HAVE_IFADDRS_H
+#include <ifaddrs.h>
+#endif
+
+#ifdef HAVE_NETPACKET_PACKET_H
+#include <netpacket/packet.h>
+#endif
+
+#ifdef HAVE_SYS_UN_H
+#include <sys/un.h>
+#endif
+
+/* SENDFILE STUFF HERE IF WE NEED IT... */
+
+#if defined(__APPLE__) && defined(__MACH__) && !defined(__DARWIN__)
+#define __DARWIN__ 1
+#endif
+
+
+#ifdef __WIN32__
+#define STRNCASECMP strncasecmp
+#define INCL_WINSOCK_API_TYPEDEFS 1
+
+#ifndef WINDOWS_H_INCLUDES_WINSOCK2_H
+#include <winsock2.h>
+#endif
+#include <windows.h>
+#include <Ws2tcpip.h> /* NEED VC 6.0 or higher */
+
+/* Visual studio 2008+: NTDDI_VERSION needs to be set for iphlpapi.h
+ * to define the right structures. It needs to be set to WINXP (or LONGHORN)
+ * for IPV6 to work and it's set lower by default, so we need to change it.
+ */
+#ifdef HAVE_SDKDDKVER_H
+# include <sdkddkver.h>
+# ifdef NTDDI_VERSION
+# undef NTDDI_VERSION
+# endif
+# define NTDDI_VERSION NTDDI_WINXP
+#endif
+#include <iphlpapi.h>
+
+#undef WANT_NONBLOCKING
+#include "sys.h"
+
+#else /* !__WIN32__ */
+
+#include <sys/time.h>
+#ifdef NETDB_H_NEEDS_IN_H
+#include <netinet/in.h>
+#endif
+#include <netdb.h>
+
+#include <sys/socket.h>
+#include <netinet/in.h>
+
+#ifdef DEF_INADDR_LOOPBACK_IN_RPC_TYPES_H
+#include <rpc/types.h>
+#endif
+
+#include <netinet/ip.h>
+#include <netinet/tcp.h>
+#include <netinet/udp.h>
+#include <arpa/inet.h>
+
+#include <sys/param.h>
+#ifdef HAVE_ARPA_NAMESER_H
+#include <arpa/nameser.h>
+#endif
+
+#ifdef HAVE_SYS_SOCKIO_H
+#include <sys/sockio.h>
+#endif
+
+#ifdef HAVE_SYS_IOCTL_H
+#include <sys/ioctl.h>
+#endif
+
+#include <net/if.h>
+
+#ifdef HAVE_SCHED_H
+#include <sched.h>
+#endif
+
+#ifdef HAVE_SETNS_H
+#include <setns.h>
+#endif
+
+#define HAVE_UDP
+
+#ifndef WANT_NONBLOCKING
+#define WANT_NONBLOCKING
+#endif
+#include "sys.h"
+
+#endif
+
+#include <erl_nif.h>
+
+#include "socket_dbg.h"
+#include "socket_int.h"
+#include "socket_util.h"
+
+
+/* All platforms fail on malloc errors. */
+#define FATAL_MALLOC
+
+
+#ifdef __WIN32__
+#define net_gethostname(__buf__, __bufSz__) gethostname((__buf__), (__bufSz__))
+#else
+#define net_gethostname(__buf__, __bufSz__) gethostname((__buf__), (__bufSz__))
+#endif // __WIN32__
+
+
+
+/* *** Misc macros and defines *** */
+
+#ifdef __WIN32__
+#define get_errno() WSAGetLastError()
+#else
+#define get_errno() errno
+#endif
+
+
+#define HOSTNAME_LEN 256
+#define SERVICE_LEN 256
+
+
+/* MAXHOSTNAMELEN could be 64 or 255 depending
+ * on the platform. Instead, use INET_MAXHOSTNAMELEN
+ * which is always 255 across all platforms
+ */
+#define NET_MAXHOSTNAMELEN 255
+
+
+/* =================================================================== *
+ * *
+ * Various enif macros *
+ * *
+ * =================================================================== */
+
+
+#ifdef HAVE_SOCKLEN_T
+# define SOCKLEN_T socklen_t
+#else
+# define SOCKLEN_T size_t
+#endif
+
+/* Debug stuff... */
+#define NET_NIF_DEBUG_DEFAULT FALSE
+
+#define NDBG( proto ) ESOCK_DBG_PRINTF( data.debug , proto )
+
+
+typedef struct {
+ BOOLEAN_T debug;
+} NetData;
+
+
+
+/* =================================================================== *
+ * *
+ * Static data *
+ * *
+ * =================================================================== */
+
+
+static NetData data;
+
+
+
+/* ----------------------------------------------------------------------
+ * F o r w a r d s
+ * ----------------------------------------------------------------------
+ */
+
+/* THIS IS JUST TEMPORARY */
+extern char* erl_errno_id(int error);
+
+
+static ERL_NIF_TERM nif_info(ErlNifEnv* env,
+ int argc,
+ const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM nif_command(ErlNifEnv* env,
+ int argc,
+ const ERL_NIF_TERM argv[]);
+
+static ERL_NIF_TERM nif_gethostname(ErlNifEnv* env,
+ int argc,
+ const ERL_NIF_TERM argv[]);
+
+static ERL_NIF_TERM nif_getnameinfo(ErlNifEnv* env,
+ int argc,
+ const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM nif_getaddrinfo(ErlNifEnv* env,
+ int argc,
+ const ERL_NIF_TERM argv[]);
+
+static ERL_NIF_TERM nif_if_name2index(ErlNifEnv* env,
+ int argc,
+ const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM nif_if_index2name(ErlNifEnv* env,
+ int argc,
+ const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM nif_if_names(ErlNifEnv* env,
+ int argc,
+ const ERL_NIF_TERM argv[]);
+
+static ERL_NIF_TERM ncommand(ErlNifEnv* env,
+ ERL_NIF_TERM cmd);
+static ERL_NIF_TERM ngethostname(ErlNifEnv* env);
+static ERL_NIF_TERM ngetnameinfo(ErlNifEnv* env,
+ const SocketAddress* saP,
+ SOCKLEN_T saLen,
+ int flags);
+static ERL_NIF_TERM ngetaddrinfo(ErlNifEnv* env,
+ char* host,
+ char* serv);
+static ERL_NIF_TERM nif_name2index(ErlNifEnv* env,
+ char* ifn);
+static ERL_NIF_TERM nif_index2name(ErlNifEnv* env,
+ unsigned int id);
+static ERL_NIF_TERM nif_names(ErlNifEnv* env);
+static unsigned int nif_names_length(struct if_nameindex* p);
+
+/*
+static void net_dtor(ErlNifEnv* env, void* obj);
+static void net_stop(ErlNifEnv* env,
+ void* obj,
+ int fd,
+ int is_direct_call);
+static void net_down(ErlNifEnv* env,
+ void* obj,
+ const ErlNifPid* pid,
+ const ErlNifMonitor* mon);
+*/
+
+static BOOLEAN_T decode_nameinfo_flags(ErlNifEnv* env,
+ const ERL_NIF_TERM eflags,
+ int* flags);
+static BOOLEAN_T decode_nameinfo_flags_list(ErlNifEnv* env,
+ const ERL_NIF_TERM eflags,
+ int* flags);
+static
+BOOLEAN_T decode_addrinfo_string(ErlNifEnv* env,
+ const ERL_NIF_TERM eString,
+ char** stringP);
+static ERL_NIF_TERM decode_bool(ErlNifEnv* env,
+ ERL_NIF_TERM eBool,
+ BOOLEAN_T* bool);
+static ERL_NIF_TERM encode_address_infos(ErlNifEnv* env,
+ struct addrinfo* addrInfo);
+static ERL_NIF_TERM encode_address_info(ErlNifEnv* env,
+ struct addrinfo* addrInfoP);
+static unsigned int address_info_length(struct addrinfo* addrInfoP);
+
+static ERL_NIF_TERM encode_address_info_family(ErlNifEnv* env,
+ int family);
+static ERL_NIF_TERM encode_address_info_type(ErlNifEnv* env,
+ int socktype);
+static ERL_NIF_TERM encode_address_info_proto(ErlNifEnv* env,
+ int proto);
+
+static char* make_address_info(ErlNifEnv* env,
+ ERL_NIF_TERM fam,
+ ERL_NIF_TERM sockType,
+ ERL_NIF_TERM proto,
+ ERL_NIF_TERM addr,
+ ERL_NIF_TERM* ai);
+
+static BOOLEAN_T extract_debug(ErlNifEnv* env,
+ ERL_NIF_TERM map);
+static int on_load(ErlNifEnv* env, void** priv_data, ERL_NIF_TERM load_info);
+
+
+#if HAVE_IN6
+# if ! defined(HAVE_IN6ADDR_ANY) || ! HAVE_IN6ADDR_ANY
+# if HAVE_DECL_IN6ADDR_ANY_INIT
+static const struct in6_addr in6addr_any = { { IN6ADDR_ANY_INIT } };
+# else
+static const struct in6_addr in6addr_any =
+ { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 } } };
+# endif /* HAVE_IN6ADDR_ANY_INIT */
+# endif /* ! HAVE_DECL_IN6ADDR_ANY */
+
+# if ! defined(HAVE_IN6ADDR_LOOPBACK) || ! HAVE_IN6ADDR_LOOPBACK
+# if HAVE_DECL_IN6ADDR_LOOPBACK_INIT
+static const struct in6_addr in6addr_loopback =
+ { { IN6ADDR_LOOPBACK_INIT } };
+# else
+static const struct in6_addr in6addr_loopback =
+ { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 } } };
+# endif /* HAVE_IN6ADDR_LOOPBACk_INIT */
+# endif /* ! HAVE_DECL_IN6ADDR_LOOPBACK */
+#endif /* HAVE_IN6 */
+
+
+
+/* *** String constants *** */
+static char str_address_info[] = "address_info";
+static char str_debug[] = "debug";
+static char str_idn[] = "idn";
+static char str_idna_allow_unassigned[] = "idna_allow_unassigned";
+static char str_idna_use_std3_ascii_rules[] = "idna_use_std3_ascii_rules";
+static char str_namereqd[] = "namereqd";
+static char str_name_info[] = "name_info";
+static char str_nofqdn[] = "nofqdn";
+static char str_numerichost[] = "numerichost";
+static char str_numericserv[] = "numericserv";
+
+/* (special) error string constants */
+static char str_eaddrfamily[] = "eaddrfamily";
+static char str_ebadflags[] = "ebadflags";
+static char str_efail[] = "efail";
+static char str_efamily[] = "efamily";
+static char str_efault[] = "efault";
+static char str_emem[] = "emem";
+static char str_enametoolong[] = "enametoolong";
+static char str_enodata[] = "enodata";
+static char str_enoname[] = "enoname";
+static char str_enxio[] = "enxio";
+static char str_eoverflow[] = "eoverflow";
+static char str_eservice[] = "eservice";
+static char str_esocktype[] = "esocktype";
+static char str_esystem[] = "esystem";
+
+
+/* *** Atoms *** */
+
+static ERL_NIF_TERM atom_address_info;
+static ERL_NIF_TERM atom_debug;
+static ERL_NIF_TERM atom_idn;
+static ERL_NIF_TERM atom_idna_allow_unassigned;
+static ERL_NIF_TERM atom_idna_use_std3_ascii_rules;
+static ERL_NIF_TERM atom_namereqd;
+static ERL_NIF_TERM atom_name_info;
+static ERL_NIF_TERM atom_nofqdn;
+static ERL_NIF_TERM atom_numerichost;
+static ERL_NIF_TERM atom_numericserv;
+
+
+static ERL_NIF_TERM atom_eaddrfamily;
+// static ERL_NIF_TERM atom_eagain;
+static ERL_NIF_TERM atom_ebadflags;
+static ERL_NIF_TERM atom_efail;
+static ERL_NIF_TERM atom_efamily;
+static ERL_NIF_TERM atom_efault;
+static ERL_NIF_TERM atom_emem;
+static ERL_NIF_TERM atom_enametoolong;
+static ERL_NIF_TERM atom_enodata;
+static ERL_NIF_TERM atom_enoname;
+static ERL_NIF_TERM atom_enxio;
+static ERL_NIF_TERM atom_eoverflow;
+static ERL_NIF_TERM atom_eservice;
+static ERL_NIF_TERM atom_esocktype;
+static ERL_NIF_TERM atom_esystem;
+
+
+/* *** net *** */
+static ErlNifResourceType* net;
+static ErlNifResourceTypeInit netInit = {
+ NULL, // net_dtor,
+ NULL, // net_stop,
+ NULL // (ErlNifResourceDown*) net_down
+};
+
+
+
+/* ----------------------------------------------------------------------
+ * N I F F u n c t i o n s
+ * ----------------------------------------------------------------------
+ *
+ * Utility and admin functions:
+ * ----------------------------
+ * nif_info/0
+ * nif_command/1
+ *
+ * The "proper" net functions:
+ * ------------------------------
+ * nif_gethostname/0
+ * nif_getnameinfo/2
+ * nif_getaddrinfo/3
+ * nif_if_name2index/1
+ * nif_if_index2name/1
+ * nif_if_names/0
+ *
+ */
+
+
+/* ----------------------------------------------------------------------
+ * nif_info
+ *
+ * Description:
+ * This is currently just a placeholder...
+ */
+static
+ERL_NIF_TERM nif_info(ErlNifEnv* env,
+ int argc,
+ const ERL_NIF_TERM argv[])
+{
+#if defined(__WIN32__)
+ return enif_raise_exception(env, MKA(env, "notsup"));
+#else
+ ERL_NIF_TERM info, tmp;
+
+ NDBG( ("NET", "info -> entry\r\n") );
+
+ tmp = enif_make_new_map(env);
+ if (!enif_make_map_put(env, tmp, atom_debug, BOOL2ATOM(data.debug), &info))
+ info = tmp;
+
+ NDBG( ("NET", "info -> done: %T\r\n", info) );
+
+ return info;
+#endif
+}
+
+
+
+/* ----------------------------------------------------------------------
+ * nif_command
+ *
+ * Description:
+ * This is a general purpose utility function.
+ *
+ * Arguments:
+ * Command - This is a general purpose command, of any type.
+ * Currently, the only supported command is:
+ *
+ * {debug, boolean()}
+ */
+static
+ERL_NIF_TERM nif_command(ErlNifEnv* env,
+ int argc,
+ const ERL_NIF_TERM argv[])
+{
+#if defined(__WIN32__)
+ return enif_raise_exception(env, MKA(env, "notsup"));
+#else
+ ERL_NIF_TERM ecmd, result;
+
+ NDBG( ("NET", "command -> entry (%d)\r\n", argc) );
+
+ if (argc != 1)
+ return enif_make_badarg(env);
+
+ ecmd = argv[0];
+
+ NDBG( ("NET", "command -> ecmd: %T\r\n", ecmd) );
+
+ result = ncommand(env, ecmd);
+
+ NDBG( ("NET", "command -> result: %T\r\n", result) );
+
+ return result;
+#endif
+}
+
+
+
+/*
+ * The command can, in principle, be anything, though currently we only
+ * support a debug command.
+ */
+#if !defined(__WIN32__)
+static
+ERL_NIF_TERM ncommand(ErlNifEnv* env,
+ ERL_NIF_TERM cmd)
+{
+ const ERL_NIF_TERM* t;
+ int tsz;
+
+ if (IS_TUPLE(env, cmd)) {
+ /* Could be the debug tuple */
+ if (!GET_TUPLE(env, cmd, &tsz, &t))
+ return esock_make_error(env, esock_atom_einval);
+
+ if (tsz != 2)
+ return esock_make_error(env, esock_atom_einval);
+
+ /* First element should be the atom 'debug' */
+ if (COMPARE(t[0], atom_debug) != 0)
+ return esock_make_error(env, esock_atom_einval);
+
+ return decode_bool(env, t[1], &data.debug);
+
+ } else {
+ return esock_make_error(env, esock_atom_einval);
+ }
+
+}
+#endif
+
+
+
+/* ----------------------------------------------------------------------
+ * nif_gethostname
+ *
+ * Description:
+ * Access the hostname of the current processor.
+ *
+ */
+static
+ERL_NIF_TERM nif_gethostname(ErlNifEnv* env,
+ int argc,
+ const ERL_NIF_TERM argv[])
+{
+#if defined(__WIN32__)
+ return enif_raise_exception(env, MKA(env, "notsup"));
+#else
+ ERL_NIF_TERM result;
+
+ NDBG( ("NET", "nif_gethostname -> entry (%d)\r\n", argc) );
+
+ if (argc != 0)
+ return enif_make_badarg(env);
+
+ result = ngethostname(env);
+
+ NDBG( ("NET", "nif_gethostname -> done when result: %T\r\n", result) );
+
+ return result;
+#endif
+}
+
+
+#if !defined(__WIN32__)
+static
+ERL_NIF_TERM ngethostname(ErlNifEnv* env)
+{
+ ERL_NIF_TERM result;
+ char buf[NET_MAXHOSTNAMELEN + 1];
+ int res;
+
+ res = net_gethostname(buf, sizeof(buf));
+
+ NDBG( ("NET", "ngethostname -> gethostname res: %d\r\n", res) );
+
+ switch (res) {
+ case 0:
+ result = esock_make_ok2(env, MKS(env, buf));
+ break;
+
+ case EFAULT:
+ result = esock_make_error(env, atom_efault);
+ break;
+
+ case EINVAL:
+ result = esock_make_error(env, esock_atom_einval);
+ break;
+
+ case ENAMETOOLONG:
+ result = esock_make_error(env, atom_enametoolong);
+ break;
+
+ default:
+ result = esock_make_error(env, MKI(env, res));
+ break;
+ }
+
+ return result;
+}
+#endif
+
+
+
+
+/* ----------------------------------------------------------------------
+ * nif_getnameinfo
+ *
+ * Description:
+ * Address-to-name translation in protocol-independent manner.
+ *
+ * Arguments:
+ * SockAddr - Socket Address (address and port)
+ * Flags - The flags argument modifies the behavior of getnameinfo().
+ */
+
+static
+ERL_NIF_TERM nif_getnameinfo(ErlNifEnv* env,
+ int argc,
+ const ERL_NIF_TERM argv[])
+{
+#if defined(__WIN32__)
+ return enif_raise_exception(env, MKA(env, "notsup"));
+#else
+ ERL_NIF_TERM result;
+ ERL_NIF_TERM eSockAddr, eFlags;
+ int flags = 0; // Just in case...
+ SocketAddress sa;
+ SOCKLEN_T saLen = 0; // Just in case...
+
+ NDBG( ("NET", "nif_getnameinfo -> entry (%d)\r\n", argc) );
+
+ if (argc != 2)
+ return enif_make_badarg(env);
+ eSockAddr = argv[0];
+ eFlags = argv[1];
+
+ NDBG( ("NET",
+ "nif_getnameinfo -> "
+ "\r\n SockAddr: %T"
+ "\r\n Flags: %T"
+ "\r\n", eSockAddr, eFlags) );
+
+ if (!esock_decode_sockaddr(env, eSockAddr, &sa, &saLen))
+ return enif_make_badarg(env);
+
+ if (!decode_nameinfo_flags(env, eFlags, &flags))
+ return enif_make_badarg(env);
+
+ result = ngetnameinfo(env, &sa, saLen, flags);
+
+ NDBG( ("NET",
+ "nif_getnameinfo -> done when result: "
+ "\r\n %T\r\n", result) );
+
+ return result;
+#endif
+}
+
+
+
+/* Given the provided sock(et) address (and honts), retreive the host and
+ * service info.
+ */
+#if !defined(__WIN32__)
+static
+ERL_NIF_TERM ngetnameinfo(ErlNifEnv* env,
+ const SocketAddress* saP,
+ SOCKLEN_T saLen,
+ int flags)
+{
+ ERL_NIF_TERM result;
+ char host[HOSTNAME_LEN];
+ SOCKLEN_T hostLen = sizeof(host);
+ char serv[SERVICE_LEN];
+ SOCKLEN_T servLen = sizeof(serv);
+
+ int res = getnameinfo((struct sockaddr*) saP, saLen,
+ host, hostLen,
+ serv, servLen,
+ flags);
+
+ NDBG( ("NET", "ngetnameinfo -> res: %d\r\n", res) );
+
+ switch (res) {
+ case 0:
+ {
+ ERL_NIF_TERM info = MKT3(env,
+ atom_name_info,
+ MKS(env, host),
+ MKS(env, serv));
+ result = esock_make_ok2(env, info);
+ }
+ break;
+
+#if defined(EAI_AGAIN)
+ case EAI_AGAIN:
+ result = esock_make_error(env, esock_atom_eagain);
+ break;
+#endif
+
+#if defined(EAI_BADFLAGS)
+ case EAI_BADFLAGS:
+ result = esock_make_error(env, atom_ebadflags);
+ break;
+#endif
+
+#if defined(EAI_FAIL)
+ case EAI_FAIL:
+ result = esock_make_error(env, atom_efail);
+ break;
+#endif
+
+#if defined(EAI_FAMILY)
+ case EAI_FAMILY:
+ result = esock_make_error(env, atom_efamily);
+ break;
+#endif
+
+#if defined(EAI_MEMORY)
+ case EAI_MEMORY:
+ result = esock_make_error(env, atom_emem);
+ break;
+#endif
+
+#if defined(EAI_NONAME)
+ case EAI_NONAME:
+ result = esock_make_error(env, atom_enoname);
+ break;
+#endif
+
+#if defined(EAI_OVERFLOW)
+ case EAI_OVERFLOW:
+ result = esock_make_error(env, atom_eoverflow);
+ break;
+#endif
+
+#if defined(EAI_SYSTEM)
+ case EAI_SYSTEM:
+ result = esock_make_error_errno(env, get_errno());
+ break;
+#endif
+
+ default:
+ result = esock_make_error(env, esock_atom_einval);
+ break;
+ }
+
+ return result;
+}
+#endif
+
+
+
+/* ----------------------------------------------------------------------
+ * nif_getaddrinfo
+ *
+ * Description:
+ * Network address and service translation.
+ *
+ * Arguments:
+ * Host - Host name (either a string or the atom undefined)
+ * Service - Service name (either a string or the atom undefined)
+ * Hints - Hints for the lookup (address info record) (currently *ignored*)
+ */
+
+static
+ERL_NIF_TERM nif_getaddrinfo(ErlNifEnv* env,
+ int argc,
+ const ERL_NIF_TERM argv[])
+{
+#if defined(__WIN32__)
+ return enif_raise_exception(env, MKA(env, "notsup"));
+#else
+ ERL_NIF_TERM result, eHostName, eServName; //, eHints;
+ char* hostName;
+ char* servName;
+ // struct addrinfo* hints;
+
+ NDBG( ("NET", "nif_getaddrinfo -> entry (%d)\r\n", argc) );
+
+ if (argc != 3) {
+ return enif_make_badarg(env);
+ }
+ eHostName = argv[0];
+ eServName = argv[1];
+ // eHints = argv[2];
+
+ NDBG( ("NET",
+ "nif_getaddrinfo -> "
+ "\r\n ehost: %T"
+ "\r\n eservice: %T"
+ "\r\n ehints: %T"
+ "\r\n", argv[0], argv[1], argv[2]) );
+
+ if (!decode_addrinfo_string(env, eHostName, &hostName))
+ return enif_make_badarg(env);
+
+ if (!decode_addrinfo_string(env, eServName, &servName))
+ return enif_make_badarg(env);
+
+ /*
+ if (decode_addrinfo_hints(env, eHints, &hints))
+ return enif_make_badarg(env);
+ */
+
+ if ((hostName == NULL) && (servName == NULL))
+ return enif_make_badarg(env);
+
+ result = ngetaddrinfo(env, hostName, servName);
+
+ if (hostName != NULL)
+ FREE(hostName);
+
+ if (servName != NULL)
+ FREE(servName);
+
+ /*
+ if (hints != NULL)
+ FREE(hints);
+ */
+
+ NDBG( ("NET",
+ "nif_getaddrinfo -> done when result: "
+ "\r\n %T\r\n", result) );
+
+ return result;
+#endif
+}
+
+
+#if !defined(__WIN32__)
+static
+ERL_NIF_TERM ngetaddrinfo(ErlNifEnv* env,
+ char* host,
+ char* serv)
+{
+ ERL_NIF_TERM result;
+ struct addrinfo* addrInfoP;
+ int res;
+
+ NDBG( ("NET", "ngetaddrinfo -> entry with"
+ "\r\n host: %s"
+ "\r\n serv: %s"
+ "\r\n",
+ ((host == NULL) ? "NULL" : host),
+ ((serv == NULL) ? "NULL" : serv)) );
+
+ res = getaddrinfo(host, serv, NULL, &addrInfoP);
+
+ NDBG( ("NET", "ngetaddrinfo -> res: %d\r\n", res) );
+
+ switch (res) {
+ case 0:
+ {
+ ERL_NIF_TERM addrInfo = encode_address_infos(env, addrInfoP);
+ freeaddrinfo(addrInfoP);
+ result = esock_make_ok2(env, addrInfo);
+ }
+ break;
+
+#if defined(EAI_ADDRFAMILY)
+ case EAI_ADDRFAMILY:
+ result = esock_make_error(env, atom_eaddrfamily);
+ break;
+#endif
+
+#if defined(EAI_AGAIN)
+ case EAI_AGAIN:
+ result = esock_make_error(env, esock_atom_eagain);
+ break;
+#endif
+
+#if defined(EAI_BADFLAGS)
+ case EAI_BADFLAGS:
+ result = esock_make_error(env, atom_ebadflags);
+ break;
+#endif
+
+#if defined(EAI_FAIL)
+ case EAI_FAIL:
+ result = esock_make_error(env, atom_efail);
+ break;
+#endif
+
+#if defined(EAI_FAMILY)
+ case EAI_FAMILY:
+ result = esock_make_error(env, atom_efamily);
+ break;
+#endif
+
+#if defined(EAI_MEMORY)
+ case EAI_MEMORY:
+ result = esock_make_error(env, atom_emem);
+ break;
+#endif
+
+#if defined(EAI_NODATA)
+ case EAI_NODATA:
+ result = esock_make_error(env, atom_enodata);
+ break;
+#endif
+
+#if defined(EAI_NONAME)
+ case EAI_NONAME:
+ result = esock_make_error(env, atom_enoname);
+ break;
+#endif
+
+#if defined(EAI_SERVICE)
+ case EAI_SERVICE:
+ result = esock_make_error(env, atom_eservice);
+ break;
+#endif
+
+#if defined(EAI_SOCKTYPE)
+ case EAI_SOCKTYPE:
+ result = esock_make_error(env, atom_esocktype);
+ break;
+#endif
+
+#if defined(EAI_SYSTEM)
+ case EAI_SYSTEM:
+ result = esock_make_error(env, atom_esystem);
+ break;
+#endif
+
+ default:
+ result = esock_make_error(env, esock_atom_einval);
+ break;
+ }
+
+ return result;
+}
+#endif
+
+
+
+/* ----------------------------------------------------------------------
+ * nif_if_name2index
+ *
+ * Description:
+ * Perform a Interface Name to Interface Index translation.
+ *
+ * Arguments:
+ * Ifn - Interface name to be translated.
+ */
+
+static
+ERL_NIF_TERM nif_if_name2index(ErlNifEnv* env,
+ int argc,
+ const ERL_NIF_TERM argv[])
+{
+#if defined(__WIN32__)
+ return enif_raise_exception(env, MKA(env, "notsup"));
+#else
+ ERL_NIF_TERM eifn, result;
+ char ifn[IF_NAMESIZE+1];
+
+ NDBG( ("NET", "nif_if_name2index -> entry (%d)\r\n", argc) );
+
+ if (argc != 1) {
+ return enif_make_badarg(env);
+ }
+ eifn = argv[0];
+
+ NDBG( ("NET",
+ "nif_if_name2index -> "
+ "\r\n Ifn: %T"
+ "\r\n", argv[0]) );
+
+ if (0 >= GET_STR(env, eifn, ifn, sizeof(ifn)))
+ return esock_make_error(env, esock_atom_einval);
+
+ result = nif_name2index(env, ifn);
+
+ NDBG( ("NET", "nif_if_name2index -> done when result: %T\r\n", result) );
+
+ return result;
+#endif
+}
+
+
+
+#if !defined(__WIN32__)
+static
+ERL_NIF_TERM nif_name2index(ErlNifEnv* env,
+ char* ifn)
+{
+ unsigned int idx;
+
+ NDBG( ("NET", "nif_name2index -> entry with ifn: %s\r\n", ifn) );
+
+ idx = if_nametoindex(ifn);
+
+ NDBG( ("NET", "nif_name2index -> idx: %d\r\n", idx) );
+
+ if (idx == 0) {
+ int save_errno = get_errno();
+ NDBG( ("NET", "nif_name2index -> failed: %d\r\n", save_errno) );
+ return esock_make_error_errno(env, save_errno);
+ } else {
+ return esock_make_ok2(env, MKI(env, idx));
+ }
+
+}
+#endif
+
+
+
+/* ----------------------------------------------------------------------
+ * nif_if_index2name
+ *
+ * Description:
+ * Perform a Interface Index to Interface Name translation.
+ *
+ * Arguments:
+ * Idx - Interface index to be translated.
+ */
+
+static
+ERL_NIF_TERM nif_if_index2name(ErlNifEnv* env,
+ int argc,
+ const ERL_NIF_TERM argv[])
+{
+#if defined(__WIN32__)
+ return enif_raise_exception(env, MKA(env, "notsup"));
+#else
+ ERL_NIF_TERM result;
+ unsigned int idx;
+
+ NDBG( ("NET", "nif_if_index2name -> entry (%d)\r\n", argc) );
+
+ if ((argc != 1) ||
+ !GET_UINT(env, argv[0], &idx)) {
+ return enif_make_badarg(env);
+ }
+
+ NDBG( ("NET", "nif_index2name -> "
+ "\r\n Idx: %T"
+ "\r\n", argv[0]) );
+
+ result = nif_index2name(env, idx);
+
+ NDBG( ("NET", "nif_if_index2name -> done when result: %T\r\n", result) );
+
+ return result;
+#endif
+}
+
+
+
+#if !defined(__WIN32__)
+static
+ERL_NIF_TERM nif_index2name(ErlNifEnv* env,
+ unsigned int idx)
+{
+ ERL_NIF_TERM result;
+ char* ifn = MALLOC(IF_NAMESIZE+1);
+
+ if (ifn == NULL)
+ return enif_make_badarg(env); // PLACEHOLDER
+
+ if (NULL != if_indextoname(idx, ifn)) {
+ result = esock_make_ok2(env, MKS(env, ifn));
+ } else {
+ result = esock_make_error(env, atom_enxio);
+ }
+
+ FREE(ifn);
+
+ return result;
+}
+#endif
+
+
+
+/* ----------------------------------------------------------------------
+ * nif_if_names
+ *
+ * Description:
+ * Get network interface names and indexes.
+ *
+ */
+
+static
+ERL_NIF_TERM nif_if_names(ErlNifEnv* env,
+ int argc,
+ const ERL_NIF_TERM argv[])
+{
+#if defined(__WIN32__)
+ return enif_raise_exception(env, MKA(env, "notsup"));
+#else
+ ERL_NIF_TERM result;
+
+ NDBG( ("NET", "nif_if_names -> entry (%d)\r\n", argc) );
+
+ if (argc != 0) {
+ return enif_make_badarg(env);
+ }
+
+ result = nif_names(env);
+
+ NDBG( ("NET", "nif_if_names -> done when result: %T\r\n", result) );
+
+ return result;
+#endif
+}
+
+
+
+#if !defined(__WIN32__)
+static
+ERL_NIF_TERM nif_names(ErlNifEnv* env)
+{
+ ERL_NIF_TERM result;
+ struct if_nameindex* ifs = if_nameindex();
+
+ NDBG( ("NET", "nif_names -> ifs: 0x%lX\r\n", ifs) );
+
+ if (ifs == NULL) {
+ result = esock_make_error_errno(env, get_errno());
+ } else {
+ /*
+ * We got some interfaces:
+ * 1) Calculate how many - the only way is to iterate through the list
+ * until its end (which is indicated by an entry with index = zero
+ * and if_name = NULL).
+ * 2) Allocate an ERL_NIF_TERM array of the calculated length.
+ * 3) Iterate through the array of interfaces and for each create
+ * a two tuple: {Idx, If}
+ *
+ * Or shall we instead build a list in reverse order and then when
+ * its done, reverse that? Check
+ */
+ unsigned int len = nif_names_length(ifs);
+
+ NDBG( ("NET", "nif_names -> len: %d\r\n", len) );
+
+ if (len > 0) {
+ ERL_NIF_TERM* array = MALLOC(len * sizeof(ERL_NIF_TERM));
+ unsigned int i;
+
+ for (i = 0; i < len; i++) {
+ array[i] = MKT2(env,
+ MKI(env, ifs[i].if_index),
+ MKS(env, ifs[i].if_name));
+ }
+
+ result = esock_make_ok2(env, MKLA(env, array, len));
+ FREE(array);
+ } else {
+ result = esock_make_ok2(env, enif_make_list(env, 0));
+ }
+ }
+
+ if (ifs != NULL)
+ if_freenameindex(ifs);
+
+ return result;
+}
+
+
+static
+unsigned int nif_names_length(struct if_nameindex* p)
+{
+ unsigned int len = 0;
+ BOOLEAN_T done = FALSE;
+
+ while (!done) {
+
+ NDBG( ("NET", "nif_names_length -> %d: "
+ "\r\n if_index: %d"
+ "\r\n if_name: 0x%lX"
+ "\r\n", len, p[len].if_index, p[len].if_name) );
+
+ if ((p[len].if_index == 0) && (p[len].if_name == NULL))
+ done = TRUE;
+ else
+ len++;
+ }
+
+ return len;
+}
+#endif // if !defined(__WIN32__)
+
+
+
+/* ----------------------------------------------------------------------
+ * U t i l i t y F u n c t i o n s
+ * ----------------------------------------------------------------------
+ */
+
+/* The erlang format for a set of flags is a list of atoms.
+ * A special case is when there is no flags, which is
+ * represented by the atom undefined.
+ */
+#if !defined(__WIN32__)
+static
+BOOLEAN_T decode_nameinfo_flags(ErlNifEnv* env,
+ const ERL_NIF_TERM eflags,
+ int* flags)
+{
+ BOOLEAN_T result;
+
+ if (IS_ATOM(env, eflags)) {
+ if (COMPARE(eflags, esock_atom_undefined) == 0) {
+ *flags = 0;
+ result = TRUE;
+ } else {
+ result = FALSE;
+ }
+ } else if (IS_LIST(env, eflags)) {
+ NDBG( ("NET", "decode_nameinfo_flags -> is atom\r\n") );
+ result = decode_nameinfo_flags_list(env, eflags, flags);
+ } else {
+ result = FALSE;
+ }
+
+ return result;
+}
+
+
+
+static
+BOOLEAN_T decode_nameinfo_flags_list(ErlNifEnv* env,
+ const ERL_NIF_TERM eflags,
+ int* flags)
+{
+ ERL_NIF_TERM elem, tail, list = eflags;
+ int tmp = 0;
+ BOOLEAN_T done = FALSE;
+
+ while (!done) {
+ if (GET_LIST_ELEM(env, list, &elem, &tail)) {
+ if (COMPARE(elem, atom_namereqd) == 0) {
+ tmp |= NI_NAMEREQD;
+ } else if (COMPARE(elem, esock_atom_dgram) == 0) {
+ tmp |= NI_DGRAM;
+ } else if (COMPARE(elem, atom_nofqdn) == 0) {
+ tmp |= NI_NOFQDN;
+ } else if (COMPARE(elem, atom_numerichost) == 0) {
+ tmp |= NI_NUMERICHOST;
+ } else if (COMPARE(elem, atom_numericserv) == 0) {
+ tmp |= NI_NUMERICSERV;
+
+ /* Starting with glibc 2.3.4: */
+
+#if defined(NI_IDN)
+ } else if (COMPARE(elem, atom_idn) == 0) {
+ tmp |= NI_IDN;
+#endif
+
+#if defined(NI_IDN_ALLOW_UNASSIGNED)
+ } else if (COMPARE(elem, atom_idna_allow_unassigned) == 0) {
+ tmp |= NI_IDN_ALLOW_UNASSIGNED;
+#endif
+
+#if defined(NI_IDN_USE_STD3_ASCII_RULES)
+ } else if (COMPARE(elem, atom_idna_use_std3_ascii_rules) == 0) {
+ tmp |= NI_IDN_USE_STD3_ASCII_RULES;
+#endif
+
+ } else {
+ return FALSE;
+ }
+
+ list = tail;
+
+ } else {
+ done = TRUE;
+ }
+ }
+
+ *flags = tmp;
+
+ return TRUE;
+}
+
+
+
+/* Decode the address info string (hostname or service name)
+ * The string is either the atom undefined or an actual string.
+ */
+static
+BOOLEAN_T decode_addrinfo_string(ErlNifEnv* env,
+ const ERL_NIF_TERM eString,
+ char** stringP)
+{
+ BOOLEAN_T result;
+
+ if (IS_ATOM(env, eString)) {
+
+ if (COMPARE(eString, esock_atom_undefined) == 0) {
+ *stringP = NULL;
+ result = TRUE;
+ } else {
+ *stringP = NULL;
+ result = FALSE;
+ }
+
+ } else {
+
+ result = esock_decode_string(env, eString, stringP);
+
+ }
+
+ return result;
+
+}
+
+
+
+static
+ERL_NIF_TERM decode_bool(ErlNifEnv* env,
+ ERL_NIF_TERM eBool,
+ BOOLEAN_T* bool)
+{
+ if (COMPARE(eBool, esock_atom_true) == 0) {
+ *bool = TRUE;
+ return esock_atom_ok;
+ } else if (COMPARE(eBool, esock_atom_false) == 0) {
+ *bool = FALSE;
+ return esock_atom_ok;
+ } else {
+ return esock_make_error(env, esock_atom_einval);
+ }
+}
+
+
+
+/* Encode the address info
+ * The address info is a linked list och address info, which
+ * will result in the result being a list of zero or more length.
+ */
+static
+ERL_NIF_TERM encode_address_infos(ErlNifEnv* env,
+ struct addrinfo* addrInfo)
+{
+ ERL_NIF_TERM result;
+ unsigned int len = address_info_length(addrInfo);
+
+ NDBG( ("NET", "encode_address_infos -> len: %d\r\n", len) );
+
+ if (len > 0) {
+ ERL_NIF_TERM* array = MALLOC(len * sizeof(ERL_NIF_TERM)); // LEAK?
+ unsigned int i = 0;
+ struct addrinfo* p = addrInfo;
+
+ while (i < len) {
+ array[i] = encode_address_info(env, p);
+ p = p->ai_next;
+ i++;
+ }
+
+ result = MKLA(env, array, len);
+ } else {
+ result = MKEL(env);
+ }
+
+ NDBG( ("NET", "encode_address_infos -> result: "
+ "\r\n %T\r\n", result) );
+
+ return result;
+}
+
+
+
+/* Calculate the length of the adress info linked list
+ * The list is NULL-terminated, so the only way is to
+ * iterate through the list until we find next = NULL.
+ */
+static
+unsigned int address_info_length(struct addrinfo* addrInfoP)
+{
+ unsigned int len = 1;
+ struct addrinfo* tmp;
+ BOOLEAN_T done = FALSE;
+
+ tmp = addrInfoP;
+
+ while (!done) {
+ if (tmp->ai_next != NULL) {
+ len++;
+ tmp = tmp->ai_next;
+ } else {
+ done = TRUE;
+ }
+ }
+
+ return len;
+}
+
+
+
+/* Create one (erlang) instance of the address info record
+ * Should we have address info as a record or as a map?
+ *
+ * {address_info, Fam, Type, Proto, Addr}
+ */
+static
+ERL_NIF_TERM encode_address_info(ErlNifEnv* env,
+ struct addrinfo* addrInfoP)
+{
+ ERL_NIF_TERM fam, type, proto, addr, addrInfo;
+
+ fam = encode_address_info_family(env, addrInfoP->ai_family);
+ type = encode_address_info_type(env, addrInfoP->ai_socktype);
+ proto = encode_address_info_proto(env, addrInfoP->ai_protocol);
+ esock_encode_sockaddr(env,
+ (SocketAddress*) addrInfoP->ai_addr,
+ addrInfoP->ai_addrlen,
+ &addr);
+
+ if (make_address_info(env, fam, type, proto, addr, &addrInfo) == NULL)
+ return addrInfo;
+ else
+ return esock_atom_undefined; // We should to better...
+
+}
+
+
+/* Convert an "native" family to an erlang family (=domain).
+ * Note that this is not currently exhaustive, but only supports
+ * inet and inet6. Other values will be returned as is, that is
+ * in the form of an integer.
+ */
+static
+ERL_NIF_TERM encode_address_info_family(ErlNifEnv* env,
+ int family)
+{
+ ERL_NIF_TERM efam;
+
+ if (NULL != esock_encode_domain(env, family, &efam))
+ efam = MKI(env, family);
+
+ return efam;
+}
+
+
+
+/* Convert an "native" socket type to an erlang socket type.
+ * Note that this is not currently exhaustive, but only supports
+ * stream and dgram. Other values will be returned as is, that is
+ * in the form of an integer.
+ */
+static
+ERL_NIF_TERM encode_address_info_type(ErlNifEnv* env,
+ int socktype)
+{
+ ERL_NIF_TERM etype;
+
+ if (NULL != esock_encode_type(env, socktype, &etype))
+ etype = MKI(env, socktype);
+
+ return etype;
+}
+
+
+
+/* Convert an "native" protocol to an erlang protocol.
+ * Note that this is not currently exhaustive, but only supports
+ * tcp and udp. Other values will be returned as is, that is
+ * in the form of an integer.
+ */
+static
+ERL_NIF_TERM encode_address_info_proto(ErlNifEnv* env,
+ int proto)
+{
+ ERL_NIF_TERM eproto;
+
+ if (NULL != esock_encode_protocol(env, proto, &eproto))
+ eproto = MKI(env, proto);
+
+ return eproto;
+}
+
+
+
+static
+char* make_address_info(ErlNifEnv* env,
+ ERL_NIF_TERM fam,
+ ERL_NIF_TERM sockType,
+ ERL_NIF_TERM proto,
+ ERL_NIF_TERM addr,
+ ERL_NIF_TERM* ai)
+{
+ ERL_NIF_TERM keys[] = {esock_atom_family,
+ esock_atom_type,
+ esock_atom_protocol,
+ esock_atom_addr};
+ ERL_NIF_TERM vals[] = {fam, sockType, proto, addr};
+ unsigned int numKeys = sizeof(keys) / sizeof(ERL_NIF_TERM);
+ unsigned int numVals = sizeof(vals) / sizeof(ERL_NIF_TERM);
+
+ ESOCK_ASSERT( (numKeys == numVals) );
+
+ if (!MKMA(env, keys, vals, numKeys, ai)) {
+ *ai = esock_atom_undefined;
+ return ESOCK_STR_EINVAL;
+ } else {
+ return NULL;
+ }
+}
+#endif // if !defined(__WIN32__)
+
+
+
+/* ----------------------------------------------------------------------
+ * C a l l b a c k F u n c t i o n s
+ * ----------------------------------------------------------------------
+ */
+
+/* =========================================================================
+ * net_dtor - Callback function for resource destructor
+ *
+ */
+/*
+static
+void net_dtor(ErlNifEnv* env, void* obj)
+{
+}
+*/
+
+
+/* =========================================================================
+ * net_stop - Callback function for resource stop
+ *
+ */
+/*
+static
+void net_stop(ErlNifEnv* env, void* obj, int fd, int is_direct_call)
+{
+}
+*/
+
+
+
+
+/* =========================================================================
+ * net_down - Callback function for resource down (monitored processes)
+ *
+ */
+/*
+static
+void net_down(ErlNifEnv* env,
+ void* obj,
+ const ErlNifPid* pid,
+ const ErlNifMonitor* mon)
+{
+}
+*/
+
+
+
+/* ----------------------------------------------------------------------
+ * L o a d / u n l o a d / u p g r a d e F u n c t i o n s
+ * ----------------------------------------------------------------------
+ */
+
+static
+ErlNifFunc net_funcs[] =
+{
+ // Some utility functions
+ {"nif_info", 0, nif_info, 0},
+ {"nif_command", 1, nif_command, 0}, // Shall we let this be dirty?
+
+ /* get/set hostname */
+ {"nif_gethostname", 0, nif_gethostname, 0},
+
+ /* address and name translation in protocol-independent manner */
+ {"nif_getnameinfo", 2, nif_getnameinfo, 0},
+ {"nif_getaddrinfo", 3, nif_getaddrinfo, 0},
+
+ /* Network interface (name and/or index) functions */
+ {"nif_if_name2index", 1, nif_if_name2index, 0},
+ {"nif_if_index2name", 1, nif_if_index2name, 0},
+ {"nif_if_names", 0, nif_if_names, 0}
+};
+
+
+#if !defined(__WIN32__)
+static
+BOOLEAN_T extract_debug(ErlNifEnv* env,
+ ERL_NIF_TERM map)
+{
+ /*
+ * We need to do this here since the "proper" atom has not been
+ * created when this function is called.
+ */
+ ERL_NIF_TERM debug = MKA(env, "debug");
+
+ return esock_extract_bool_from_map(env, map, debug, NET_NIF_DEBUG_DEFAULT);
+}
+#endif
+
+
+/* =======================================================================
+ * load_info - A map of misc info (e.g global debug)
+ */
+
+static
+int on_load(ErlNifEnv* env, void** priv_data, ERL_NIF_TERM load_info)
+{
+#if !defined(__WIN32__)
+ // We should make it possible to use load_info to get default values
+ data.debug = extract_debug(env, load_info);
+
+ NDBG( ("NET", "on_load -> entry\r\n") );
+#endif
+
+ /* +++ Misc atoms +++ */
+ atom_address_info = MKA(env, str_address_info);
+ atom_debug = MKA(env, str_debug);
+ atom_idn = MKA(env, str_idn);
+ atom_idna_allow_unassigned = MKA(env, str_idna_allow_unassigned);
+ atom_idna_use_std3_ascii_rules = MKA(env, str_idna_use_std3_ascii_rules);
+ atom_namereqd = MKA(env, str_namereqd);
+ atom_name_info = MKA(env, str_name_info);
+ atom_nofqdn = MKA(env, str_nofqdn);
+ atom_numerichost = MKA(env, str_numerichost);
+ atom_numericserv = MKA(env, str_numericserv);
+
+ /* Error codes */
+ atom_eaddrfamily = MKA(env, str_eaddrfamily);
+ atom_ebadflags = MKA(env, str_ebadflags);
+ atom_efail = MKA(env, str_efail);
+ atom_efamily = MKA(env, str_efamily);
+ atom_efault = MKA(env, str_efault);
+ atom_emem = MKA(env, str_emem);
+ atom_enametoolong = MKA(env, str_enametoolong);
+ atom_enodata = MKA(env, str_enodata);
+ atom_enoname = MKA(env, str_enoname);
+ atom_enxio = MKA(env, str_enxio);
+ atom_eoverflow = MKA(env, str_eoverflow);
+ atom_eservice = MKA(env, str_eservice);
+ atom_esocktype = MKA(env, str_esocktype);
+ atom_esystem = MKA(env, str_esystem);
+
+ // For storing "global" things...
+ // data.env = enif_alloc_env(); // We should really check
+ // data.version = MKA(env, ERTS_VERSION);
+ // data.buildDate = MKA(env, ERTS_BUILD_DATE);
+
+ net = enif_open_resource_type_x(env,
+ "net",
+ &netInit,
+ ERL_NIF_RT_CREATE,
+ NULL);
+
+#if !defined(__WIN32__)
+ NDBG( ("NET", "on_load -> done\r\n") );
+#endif
+
+ return !net;
+}
+
+ERL_NIF_INIT(net, net_funcs, on_load, NULL, NULL, NULL)
diff --git a/erts/emulator/nifs/common/socket_dbg.c b/erts/emulator/nifs/common/socket_dbg.c
new file mode 100644
index 0000000000..fe9135e5a0
--- /dev/null
+++ b/erts/emulator/nifs/common/socket_dbg.c
@@ -0,0 +1,138 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2018-2018. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ *
+ * ----------------------------------------------------------------------
+ * Purpose : Debug functions for the socket and net NIF(s).
+ * ----------------------------------------------------------------------
+ *
+ */
+
+#include <stdarg.h>
+#include <string.h>
+#include <stdio.h>
+#include <ctype.h>
+#include <time.h>
+
+#include <erl_nif.h>
+#include "socket_dbg.h"
+
+#define TSELF() enif_thread_self()
+#define TNAME(__T__) enif_thread_name( __T__ )
+#define TSNAME() TNAME(TSELF())
+
+static FILE* dbgout = NULL;
+
+static int realtime(struct timespec* tsP);
+static int timespec2str(char *buf, unsigned int len, struct timespec *ts);
+
+
+extern
+void esock_dbg_init(char* filename)
+{
+ if (filename != NULL) {
+ if (strcmp(filename, ESOCK_DBGOUT_DEFAULT) == 0) {
+ dbgout = stdout;
+ } else if (strcmp(filename, ESOCK_DBGOUT_UNIQUE) == 0) {
+ char template[] = "/tmp/esock-dbg-XXXXXX";
+ dbgout = fdopen(mkstemp(template), "w+");
+ } else {
+ dbgout = fopen(filename, "w+");
+ }
+ } else {
+ char template[] = "/tmp/esock-dbg-XXXXXX";
+ dbgout = fdopen(mkstemp(template), "w+");
+ }
+}
+
+
+
+/*
+ * Print a debug format string *with* both a timestamp and the
+ * the name of the *current* thread.
+ */
+extern
+void esock_dbg_printf( const char* prefix, const char* format, ... )
+{
+ va_list args;
+ char f[512 + sizeof(format)]; // This has to suffice...
+ char stamp[30];
+ struct timespec ts;
+ int res;
+
+ /*
+ * We should really include self in the printout, so we can se which process
+ * are executing the code. But then I must change the API....
+ * ....something for later.
+ */
+
+ if (!realtime(&ts)) {
+ if (timespec2str(stamp, sizeof(stamp), &ts) != 0) {
+ res = enif_snprintf(f, sizeof(f), "%s [%s] %s", prefix, TSNAME(), format);
+ // res = enif_snprintf(f, sizeof(f), "%s [%s]", prefix, format);
+ } else {
+ res = enif_snprintf(f, sizeof(f), "%s [%s] [%s] %s", prefix, stamp, TSNAME(), format);
+ // res = enif_snprintf(f, sizeof(f), "%s [%s] %s", prefix, stamp, format);
+ }
+
+ if (res > 0) {
+ va_start (args, format);
+ enif_vfprintf (dbgout, f, args);
+ va_end (args);
+ fflush(stdout);
+ }
+ }
+
+ return;
+}
+
+
+static
+int realtime(struct timespec* tsP)
+{
+ return clock_gettime(CLOCK_REALTIME, tsP);
+}
+
+
+
+
+/*
+ * Convert a timespec struct into a readable/printable string
+ */
+static
+int timespec2str(char *buf, unsigned int len, struct timespec *ts)
+{
+ int ret, buflen;
+ struct tm t;
+
+ tzset();
+ if (localtime_r(&(ts->tv_sec), &t) == NULL)
+ return 1;
+
+ ret = strftime(buf, len, "%F %T", &t);
+ if (ret == 0)
+ return 2;
+ len -= ret - 1;
+ buflen = strlen(buf);
+
+ ret = snprintf(&buf[buflen], len, ".%06ld", ts->tv_nsec/1000);
+ if (ret >= len)
+ return 3;
+
+ return 0;
+}
diff --git a/erts/emulator/nifs/common/socket_dbg.h b/erts/emulator/nifs/common/socket_dbg.h
new file mode 100644
index 0000000000..47739b46da
--- /dev/null
+++ b/erts/emulator/nifs/common/socket_dbg.h
@@ -0,0 +1,55 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2018-2018. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ *
+ * ----------------------------------------------------------------------
+ * Purpose : Defines and macros for the debug util of the socket and
+ * net NIF(s).
+ * ----------------------------------------------------------------------
+ *
+ */
+
+#ifndef SOCKET_DBG_H__
+#define SOCKET_DBG_H__
+
+/* Used when calling the init function */
+#define ESOCK_DBGOUT_DEFAULT "stdout"
+#define ESOCK_DBGOUT_UNIQUE "unique"
+
+
+/* Used in debug printouts */
+#ifdef __WIN32__
+#define LLU "%I64u"
+#else
+#define LLU "%llu"
+#endif
+typedef unsigned long long llu_t;
+
+
+
+#define ESOCK_DBG_PRINTF( ___COND___ , proto ) \
+ if ( ___COND___ ) { \
+ esock_dbg_printf proto; \
+ fflush(stdout); \
+ }
+
+
+extern void esock_dbg_init(char* filename);
+extern void esock_dbg_printf( const char* prefix, const char* format, ... );
+
+#endif // SOCKET_DBG_H__
diff --git a/erts/emulator/nifs/common/socket_int.h b/erts/emulator/nifs/common/socket_int.h
new file mode 100644
index 0000000000..a9e83adc21
--- /dev/null
+++ b/erts/emulator/nifs/common/socket_int.h
@@ -0,0 +1,384 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2018-2018. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ *
+ * ----------------------------------------------------------------------
+ * Purpose : Utility "stuff" for socket and net.
+ * ----------------------------------------------------------------------
+ *
+ */
+
+#ifndef SOCKET_INT_H__
+#define SOCKET_INT_H__
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#ifdef __WIN32__
+
+/* All this just to replace sys/socket.h, netinet/in.h and sys/un.h??? */
+#define INCL_WINSOCK_API_TYPEDEFS 1
+#ifndef WINDOWS_H_INCLUDES_WINSOCK2_H
+#include <winsock2.h>
+#endif
+#include <windows.h>
+#include <Ws2tcpip.h> /* NEED VC 6.0 or higher */
+/* Visual studio 2008+: NTDDI_VERSION needs to be set for iphlpapi.h
+ * to define the right structures. It needs to be set to WINXP (or LONGHORN)
+ * for IPV6 to work and it's set lower by default, so we need to change it.
+ */
+#ifdef HAVE_SDKDDKVER_H
+# include <sdkddkver.h>
+# ifdef NTDDI_VERSION
+# undef NTDDI_VERSION
+# endif
+# define NTDDI_VERSION NTDDI_WINXP
+#endif
+#include <iphlpapi.h>
+
+#else /* !__WIN32__ */
+
+#include <sys/socket.h>
+#include <netinet/in.h>
+#ifdef HAVE_SYS_UN_H
+#include <sys/un.h>
+#endif
+
+#endif
+
+#include <erl_nif.h>
+
+/* The general purpose sockaddr */
+typedef union {
+ /* General sockaddr */
+ struct sockaddr sa;
+
+ /* IPv4 sockaddr */
+ struct sockaddr_in in4;
+
+ /* IPv6 sockaddr */
+#if defined(HAVE_IN6) && defined(AF_INET6)
+ struct sockaddr_in6 in6;
+#endif
+
+ /* Unix Domain Socket sockaddr */
+#if defined(HAVE_SYS_UN_H)
+ struct sockaddr_un un;
+#endif
+
+} SocketAddress;
+
+
+/* *** Boolean *type* stuff... *** */
+typedef unsigned int BOOLEAN_T;
+#define TRUE 1
+#define FALSE 0
+
+#define BOOL2ATOM(__B__) ((__B__) ? esock_atom_true : esock_atom_false)
+
+#define B2S(__B__) ((__B__) ? "true" : "false")
+
+/* Misc error strings */
+#define ESOCK_STR_EAFNOSUPPORT "eafnosupport"
+#define ESOCK_STR_EAGAIN "eagain"
+#define ESOCK_STR_EINVAL "einval"
+
+
+/* ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+ * "Global" atoms
+ */
+extern ERL_NIF_TERM esock_atom_abort;
+extern ERL_NIF_TERM esock_atom_accept;
+extern ERL_NIF_TERM esock_atom_acceptconn;
+extern ERL_NIF_TERM esock_atom_acceptfilter;
+extern ERL_NIF_TERM esock_atom_adaption_layer;
+extern ERL_NIF_TERM esock_atom_addr;
+extern ERL_NIF_TERM esock_atom_addrform;
+extern ERL_NIF_TERM esock_atom_add_membership;
+extern ERL_NIF_TERM esock_atom_add_source_membership;
+extern ERL_NIF_TERM esock_atom_any;
+extern ERL_NIF_TERM esock_atom_associnfo;
+extern ERL_NIF_TERM esock_atom_authhdr;
+extern ERL_NIF_TERM esock_atom_auth_active_key;
+extern ERL_NIF_TERM esock_atom_auth_asconf;
+extern ERL_NIF_TERM esock_atom_auth_chunk;
+extern ERL_NIF_TERM esock_atom_auth_delete_key;
+extern ERL_NIF_TERM esock_atom_auth_key;
+extern ERL_NIF_TERM esock_atom_auth_level;
+extern ERL_NIF_TERM esock_atom_autoclose;
+extern ERL_NIF_TERM esock_atom_bindtodevice;
+extern ERL_NIF_TERM esock_atom_block_source;
+extern ERL_NIF_TERM esock_atom_broadcast;
+extern ERL_NIF_TERM esock_atom_busy_poll;
+extern ERL_NIF_TERM esock_atom_checksum;
+extern ERL_NIF_TERM esock_atom_close;
+extern ERL_NIF_TERM esock_atom_connect;
+extern ERL_NIF_TERM esock_atom_congestion;
+extern ERL_NIF_TERM esock_atom_context;
+extern ERL_NIF_TERM esock_atom_cork;
+extern ERL_NIF_TERM esock_atom_credentials;
+extern ERL_NIF_TERM esock_atom_ctrl;
+extern ERL_NIF_TERM esock_atom_ctrunc;
+extern ERL_NIF_TERM esock_atom_data;
+extern ERL_NIF_TERM esock_atom_debug;
+extern ERL_NIF_TERM esock_atom_default_send_params;
+extern ERL_NIF_TERM esock_atom_delayed_ack_time;
+extern ERL_NIF_TERM esock_atom_dgram;
+extern ERL_NIF_TERM esock_atom_disable_fragments;
+extern ERL_NIF_TERM esock_atom_domain;
+extern ERL_NIF_TERM esock_atom_dontfrag;
+extern ERL_NIF_TERM esock_atom_dontroute;
+extern ERL_NIF_TERM esock_atom_drop_membership;
+extern ERL_NIF_TERM esock_atom_drop_source_membership;
+extern ERL_NIF_TERM esock_atom_dstopts;
+extern ERL_NIF_TERM esock_atom_eor;
+extern ERL_NIF_TERM esock_atom_error;
+extern ERL_NIF_TERM esock_atom_errqueue;
+extern ERL_NIF_TERM esock_atom_esp_network_level;
+extern ERL_NIF_TERM esock_atom_esp_trans_level;
+extern ERL_NIF_TERM esock_atom_events;
+extern ERL_NIF_TERM esock_atom_explicit_eor;
+extern ERL_NIF_TERM esock_atom_faith;
+extern ERL_NIF_TERM esock_atom_false;
+extern ERL_NIF_TERM esock_atom_family;
+extern ERL_NIF_TERM esock_atom_flags;
+extern ERL_NIF_TERM esock_atom_flowinfo;
+extern ERL_NIF_TERM esock_atom_fragment_interleave;
+extern ERL_NIF_TERM esock_atom_freebind;
+extern ERL_NIF_TERM esock_atom_get_peer_addr_info;
+extern ERL_NIF_TERM esock_atom_hdrincl;
+extern ERL_NIF_TERM esock_atom_hmac_ident;
+extern ERL_NIF_TERM esock_atom_hoplimit;
+extern ERL_NIF_TERM esock_atom_hopopts;
+extern ERL_NIF_TERM esock_atom_ifindex;
+extern ERL_NIF_TERM esock_atom_inet;
+extern ERL_NIF_TERM esock_atom_inet6;
+extern ERL_NIF_TERM esock_atom_info;
+extern ERL_NIF_TERM esock_atom_initmsg;
+extern ERL_NIF_TERM esock_atom_iov;
+extern ERL_NIF_TERM esock_atom_ip;
+extern ERL_NIF_TERM esock_atom_ipcomp_level;
+extern ERL_NIF_TERM esock_atom_ipv6;
+extern ERL_NIF_TERM esock_atom_i_want_mapped_v4_addr;
+extern ERL_NIF_TERM esock_atom_join_group;
+extern ERL_NIF_TERM esock_atom_keepalive;
+extern ERL_NIF_TERM esock_atom_keepcnt;
+extern ERL_NIF_TERM esock_atom_keepidle;
+extern ERL_NIF_TERM esock_atom_keepintvl;
+extern ERL_NIF_TERM esock_atom_leave_group;
+extern ERL_NIF_TERM esock_atom_level;
+extern ERL_NIF_TERM esock_atom_linger;
+extern ERL_NIF_TERM esock_atom_local;
+extern ERL_NIF_TERM esock_atom_local_auth_chunks;
+extern ERL_NIF_TERM esock_atom_loopback;
+extern ERL_NIF_TERM esock_atom_lowdelay;
+extern ERL_NIF_TERM esock_atom_mark;
+extern ERL_NIF_TERM esock_atom_maxburst;
+extern ERL_NIF_TERM esock_atom_maxseg;
+extern ERL_NIF_TERM esock_atom_md5sig;
+extern ERL_NIF_TERM esock_atom_mincost;
+extern ERL_NIF_TERM esock_atom_minttl;
+extern ERL_NIF_TERM esock_atom_msfilter;
+extern ERL_NIF_TERM esock_atom_mtu;
+extern ERL_NIF_TERM esock_atom_mtu_discover;
+extern ERL_NIF_TERM esock_atom_multicast_all;
+extern ERL_NIF_TERM esock_atom_multicast_hops;
+extern ERL_NIF_TERM esock_atom_multicast_if;
+extern ERL_NIF_TERM esock_atom_multicast_loop;
+extern ERL_NIF_TERM esock_atom_multicast_ttl;
+extern ERL_NIF_TERM esock_atom_nodelay;
+extern ERL_NIF_TERM esock_atom_nodefrag;
+extern ERL_NIF_TERM esock_atom_noopt;
+extern ERL_NIF_TERM esock_atom_nopush;
+extern ERL_NIF_TERM esock_atom_not_found;
+extern ERL_NIF_TERM esock_atom_not_owner;
+extern ERL_NIF_TERM esock_atom_ok;
+extern ERL_NIF_TERM esock_atom_oob;
+extern ERL_NIF_TERM esock_atom_oobinline;
+extern ERL_NIF_TERM esock_atom_options;
+extern ERL_NIF_TERM esock_atom_origdstaddr;
+extern ERL_NIF_TERM esock_atom_partial_delivery_point;
+extern ERL_NIF_TERM esock_atom_passcred;
+extern ERL_NIF_TERM esock_atom_path;
+extern ERL_NIF_TERM esock_atom_peekcred;
+extern ERL_NIF_TERM esock_atom_peek_off;
+extern ERL_NIF_TERM esock_atom_peer_addr_params;
+extern ERL_NIF_TERM esock_atom_peer_auth_chunks;
+extern ERL_NIF_TERM esock_atom_pktinfo;
+extern ERL_NIF_TERM esock_atom_pktoptions;
+extern ERL_NIF_TERM esock_atom_port;
+extern ERL_NIF_TERM esock_atom_portrange;
+extern ERL_NIF_TERM esock_atom_primary_addr;
+extern ERL_NIF_TERM esock_atom_priority;
+extern ERL_NIF_TERM esock_atom_protocol;
+extern ERL_NIF_TERM esock_atom_raw;
+extern ERL_NIF_TERM esock_atom_rcvbuf;
+extern ERL_NIF_TERM esock_atom_rcvbufforce;
+extern ERL_NIF_TERM esock_atom_rcvlowat;
+extern ERL_NIF_TERM esock_atom_rcvtimeo;
+extern ERL_NIF_TERM esock_atom_rdm;
+extern ERL_NIF_TERM esock_atom_recv;
+extern ERL_NIF_TERM esock_atom_recvdstaddr;
+extern ERL_NIF_TERM esock_atom_recverr;
+extern ERL_NIF_TERM esock_atom_recvfrom;
+extern ERL_NIF_TERM esock_atom_recvif;
+extern ERL_NIF_TERM esock_atom_recvmsg;
+extern ERL_NIF_TERM esock_atom_recvopts;
+extern ERL_NIF_TERM esock_atom_recvorigdstaddr;
+extern ERL_NIF_TERM esock_atom_recvpktinfo;
+extern ERL_NIF_TERM esock_atom_recvtclass;
+extern ERL_NIF_TERM esock_atom_recvtos;
+extern ERL_NIF_TERM esock_atom_recvttl;
+extern ERL_NIF_TERM esock_atom_reliability;
+extern ERL_NIF_TERM esock_atom_reset_streams;
+extern ERL_NIF_TERM esock_atom_retopts;
+extern ERL_NIF_TERM esock_atom_reuseaddr;
+extern ERL_NIF_TERM esock_atom_reuseport;
+extern ERL_NIF_TERM esock_atom_rights;
+extern ERL_NIF_TERM esock_atom_router_alert;
+extern ERL_NIF_TERM esock_atom_rthdr;
+extern ERL_NIF_TERM esock_atom_rtoinfo;
+extern ERL_NIF_TERM esock_atom_rxq_ovfl;
+extern ERL_NIF_TERM esock_atom_scope_id;
+extern ERL_NIF_TERM esock_atom_sctp;
+extern ERL_NIF_TERM esock_atom_sec;
+extern ERL_NIF_TERM esock_atom_select_failed;
+extern ERL_NIF_TERM esock_atom_select_sent;
+extern ERL_NIF_TERM esock_atom_send;
+extern ERL_NIF_TERM esock_atom_sendmsg;
+extern ERL_NIF_TERM esock_atom_sendsrcaddr;
+extern ERL_NIF_TERM esock_atom_sendto;
+extern ERL_NIF_TERM esock_atom_seqpacket;
+extern ERL_NIF_TERM esock_atom_setfib;
+extern ERL_NIF_TERM esock_atom_set_peer_primary_addr;
+extern ERL_NIF_TERM esock_atom_sndbuf;
+extern ERL_NIF_TERM esock_atom_sndbufforce;
+extern ERL_NIF_TERM esock_atom_sndlowat;
+extern ERL_NIF_TERM esock_atom_sndtimeo;
+extern ERL_NIF_TERM esock_atom_socket;
+extern ERL_NIF_TERM esock_atom_socket_tag;
+extern ERL_NIF_TERM esock_atom_spec_dst;
+extern ERL_NIF_TERM esock_atom_status;
+extern ERL_NIF_TERM esock_atom_stream;
+extern ERL_NIF_TERM esock_atom_syncnt;
+extern ERL_NIF_TERM esock_atom_tclass;
+extern ERL_NIF_TERM esock_atom_tcp;
+extern ERL_NIF_TERM esock_atom_throughput;
+extern ERL_NIF_TERM esock_atom_timestamp;
+extern ERL_NIF_TERM esock_atom_tos;
+extern ERL_NIF_TERM esock_atom_transparent;
+extern ERL_NIF_TERM esock_atom_true;
+extern ERL_NIF_TERM esock_atom_trunc;
+extern ERL_NIF_TERM esock_atom_ttl;
+extern ERL_NIF_TERM esock_atom_type;
+extern ERL_NIF_TERM esock_atom_udp;
+extern ERL_NIF_TERM esock_atom_unblock_source;
+extern ERL_NIF_TERM esock_atom_undefined;
+extern ERL_NIF_TERM esock_atom_unicast_hops;
+extern ERL_NIF_TERM esock_atom_unknown;
+extern ERL_NIF_TERM esock_atom_usec;
+extern ERL_NIF_TERM esock_atom_user_timeout;
+extern ERL_NIF_TERM esock_atom_use_ext_recvinfo;
+extern ERL_NIF_TERM esock_atom_use_min_mtu;
+extern ERL_NIF_TERM esock_atom_v6only;
+
+
+/* ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+ * Error value (=reason) atoms
+ */
+extern ERL_NIF_TERM esock_atom_eafnosupport;
+extern ERL_NIF_TERM esock_atom_eagain;
+extern ERL_NIF_TERM esock_atom_einval;
+
+
+
+/* ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+ * Various wrapper macros for enif functions
+ */
+#define MALLOC(SZ) enif_alloc((SZ))
+#define REALLOC(P, SZ) enif_realloc((P), (SZ))
+#define FREE(P) enif_free((P))
+
+#define MKA(E,S) enif_make_atom((E), (S))
+#define MKBIN(E,B) enif_make_binary((E), (B))
+#define MKI(E,I) enif_make_int((E), (I))
+#define MKL(E,L) enif_make_long((E), (L))
+#define MKLA(E,A,L) enif_make_list_from_array((E), (A), (L))
+#define MKEL(E) enif_make_list((E), 0)
+#define MKMA(E,KA,VA,L,M) enif_make_map_from_arrays((E), (KA), (VA), (L), (M))
+#define MKPID(E, P) enif_make_pid((E), (P))
+#define MKREF(E) enif_make_ref((E))
+#define MKS(E,S) enif_make_string((E), (S), ERL_NIF_LATIN1)
+#define MKSL(E,S,L) enif_make_string_len((E), (S), (L), ERL_NIF_LATIN1)
+#define MKSBIN(E,B,ST,SZ) enif_make_sub_binary((E), (B), (ST), (SZ))
+#define MKT2(E,E1,E2) enif_make_tuple2((E), (E1), (E2))
+#define MKT3(E,E1,E2,E3) enif_make_tuple3((E), (E1), (E2), (E3))
+#define MKT4(E,E1,E2,E3,E4) enif_make_tuple4((E), (E1), (E2), (E3), (E4))
+#define MKT5(E,E1,E2,E3,E4,E5) \
+ enif_make_tuple5((E), (E1), (E2), (E3), (E4), (E5))
+#define MKT8(E,E1,E2,E3,E4,E5,E6,E7,E8) \
+ enif_make_tuple8((E), (E1), (E2), (E3), (E4), (E5), (E6), (E7), (E8))
+#define MKTA(E, A, AL) enif_make_tuple_from_array((E), (A), (AL))
+#define MKUI(E,UI) enif_make_uint((E), (UI))
+#define MKUL(E,UL) enif_make_ulong((E), (UL))
+
+#define MCREATE(N) enif_mutex_create((N))
+#define MDESTROY(M) enif_mutex_destroy((M))
+#define MLOCK(M) enif_mutex_lock((M))
+#define MUNLOCK(M) enif_mutex_unlock((M))
+
+// #define MONP(S,E,D,P,M) enif_monitor_process((E), (D), (P), (M))
+// #define DEMONP(S,E,D,M) enif_demonitor_process((E), (D), (M))
+#define MONP(S,E,D,P,M) esock_monitor((S), (E), (D), (P), (M))
+#define DEMONP(S,E,D,M) esock_demonitor((S), (E), (D), (M))
+#define MON_INIT(M) esock_monitor_init((M))
+// #define MON_COMP(M1, M2) esock_monitor_compare((M1), (M2))
+
+#define COMPARE(A, B) enif_compare((A), (B))
+
+#define IS_ATOM(E, TE) enif_is_atom((E), (TE))
+#define IS_BIN(E, TE) enif_is_binary((E), (TE))
+#define IS_LIST(E, TE) enif_is_list((E), (TE))
+#define IS_MAP(E, TE) enif_is_map((E), (TE))
+#define IS_NUM(E, TE) enif_is_number((E), (TE))
+#define IS_TUPLE(E, TE) enif_is_tuple((E), (TE))
+
+#define GET_ATOM_LEN(E, TE, LP) \
+ enif_get_atom_length((E), (TE), (LP), ERL_NIF_LATIN1)
+#define GET_ATOM(E, TE, BP, MAX) \
+ enif_get_atom((E), (TE), (BP), (MAX), ERL_NIF_LATIN1)
+#define GET_BIN(E, TE, BP) enif_inspect_iolist_as_binary((E), (TE), (BP))
+#define GET_INT(E, TE, IP) enif_get_int((E), (TE), (IP))
+#define GET_LIST_ELEM(E, L, HP, TP) enif_get_list_cell((E), (L), (HP), (TP))
+#define GET_LIST_LEN(E, L, LP) enif_get_list_length((E), (L), (LP))
+#define GET_LONG(E, TE, LP) enif_get_long((E), (TE), (LP))
+#define GET_LPID(E, T, P) enif_get_local_pid((E), (T), (P))
+#define GET_STR(E, L, B, SZ) \
+ enif_get_string((E), (L), (B), (SZ), ERL_NIF_LATIN1)
+#define GET_UINT(E, TE, UIP) enif_get_uint((E), (TE), (UIP))
+#define GET_ULONG(E, TE, ULP) enif_get_long((E), (TE), (ULP))
+#define GET_TUPLE(E, TE, TSZ, TA) enif_get_tuple((E), (TE), (TSZ), (TA))
+#define GET_MAP_VAL(E, M, K, V) enif_get_map_value((E), (M), (K), (V))
+
+#define ALLOC_BIN(SZ, BP) enif_alloc_binary((SZ), (BP))
+#define REALLOC_BIN(SZ, BP) enif_realloc_binary((SZ), (BP))
+#define FREE_BIN(BP) enif_release_binary((BP))
+
+
+#endif // SOCKET_INT_H__
diff --git a/erts/emulator/nifs/common/socket_nif.c b/erts/emulator/nifs/common/socket_nif.c
new file mode 100644
index 0000000000..d56b70e3fd
--- /dev/null
+++ b/erts/emulator/nifs/common/socket_nif.c
@@ -0,0 +1,18649 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2018-2019. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ *
+ * ----------------------------------------------------------------------
+ * Purpose : The NIF (C) part of the socket interface
+ *
+ * All of the nif-functions which are part of the API has two parts.
+ * The first function is called 'nif_<something>', e.g. nif_open.
+ * This does the initial validation and argument processing and then
+ * calls the function that does the actual work. This is called
+ * 'n<something>'.
+ * ----------------------------------------------------------------------
+ *
+ *
+ * This is just a code snippet in case there is need of extra debugging
+ *
+ * esock_dbg_printf("DEMONP", "[%d] %s: %T\r\n",
+ * descP->sock, slogan,
+ * my_make_monitor_term(env, &monP->mon));
+ *
+ */
+
+#define STATIC_ERLANG_NIF 1
+
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+/* If we HAVE_SCTP_H and Solaris, we need to define the following in
+ * order to get SCTP working:
+ */
+#if (defined(HAVE_SCTP_H) && defined(__sun) && defined(__SVR4))
+#define SOLARIS10 1
+/* WARNING: This is not quite correct, it may also be Solaris 11! */
+#define _XPG4_2
+#define __EXTENSIONS__
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stddef.h>
+#include <ctype.h>
+#include <sys/types.h>
+#include <errno.h>
+#include <time.h>
+
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#ifdef HAVE_SYS_UIO_H
+#include <sys/uio.h>
+#endif
+
+#ifdef HAVE_NET_IF_DL_H
+#include <net/if_dl.h>
+#endif
+
+#ifdef HAVE_IFADDRS_H
+#include <ifaddrs.h>
+#endif
+
+#ifdef HAVE_NETPACKET_PACKET_H
+#include <netpacket/packet.h>
+#endif
+
+#ifdef HAVE_SYS_UN_H
+#include <sys/un.h>
+#endif
+
+/* SENDFILE STUFF HERE IF WE NEED IT... */
+
+#if defined(__APPLE__) && defined(__MACH__) && !defined(__DARWIN__)
+#define __DARWIN__ 1
+#endif
+
+
+#ifdef __WIN32__
+#define STRNCASECMP strncasecmp
+#define INCL_WINSOCK_API_TYPEDEFS 1
+
+#ifndef WINDOWS_H_INCLUDES_WINSOCK2_H
+#include <winsock2.h>
+#endif
+#include <windows.h>
+#include <Ws2tcpip.h> /* NEED VC 6.0 or higher */
+
+/* Visual studio 2008+: NTDDI_VERSION needs to be set for iphlpapi.h
+ * to define the right structures. It needs to be set to WINXP (or LONGHORN)
+ * for IPV6 to work and it's set lower by default, so we need to change it.
+ */
+#ifdef HAVE_SDKDDKVER_H
+# include <sdkddkver.h>
+# ifdef NTDDI_VERSION
+# undef NTDDI_VERSION
+# endif
+# define NTDDI_VERSION NTDDI_WINXP
+#endif
+#include <iphlpapi.h>
+
+#undef WANT_NONBLOCKING
+#include "sys.h"
+
+
+
+
+/* AND HERE WE MAY HAVE A BUNCH OF DEFINES....SEE INET DRIVER.... */
+
+
+
+
+#else /* ifdef __WIN32__ */
+
+#include <sys/time.h>
+#ifdef NETDB_H_NEEDS_IN_H
+#include <netinet/in.h>
+#endif
+#include <netdb.h>
+
+#include <sys/socket.h>
+#include <netinet/in.h>
+
+#ifdef DEF_INADDR_LOOPBACK_IN_RPC_TYPES_H
+#include <rpc/types.h>
+#endif
+
+#include <netinet/ip.h>
+#include <netinet/tcp.h>
+#include <netinet/udp.h>
+#include <arpa/inet.h>
+
+#include <sys/param.h>
+#ifdef HAVE_ARPA_NAMESER_H
+#include <arpa/nameser.h>
+#endif
+
+#ifdef HAVE_SYS_SOCKIO_H
+#include <sys/sockio.h>
+#endif
+
+#ifdef HAVE_SYS_IOCTL_H
+#include <sys/ioctl.h>
+#endif
+
+#include <net/if.h>
+
+#ifdef HAVE_SCHED_H
+#include <sched.h>
+#endif
+
+#ifdef HAVE_SETNS_H
+#include <setns.h>
+#endif
+
+#define HAVE_UDP
+
+/* SCTP support -- currently for UNIX platforms only: */
+#undef HAVE_SCTP
+#if defined(HAVE_SCTP_H)
+
+#include <netinet/sctp.h>
+
+/* SCTP Socket API Draft from version 11 on specifies that netinet/sctp.h must
+ explicitly define HAVE_SCTP in case when SCTP is supported, but Solaris 10
+ still apparently uses Draft 10, and does not define that symbol, so we have
+ to define it explicitly:
+*/
+#ifndef HAVE_SCTP
+# define HAVE_SCTP
+#endif
+
+/* These changed in draft 11, so SOLARIS10 uses the old MSG_* */
+#if ! HAVE_DECL_SCTP_UNORDERED
+# define SCTP_UNORDERED MSG_UNORDERED
+#endif
+#if ! HAVE_DECL_SCTP_ADDR_OVER
+# define SCTP_ADDR_OVER MSG_ADDR_OVER
+#endif
+#if ! HAVE_DECL_SCTP_ABORT
+# define SCTP_ABORT MSG_ABORT
+#endif
+#if ! HAVE_DECL_SCTP_EOF
+# define SCTP_EOF MSG_EOF
+#endif
+
+/* More Solaris 10 fixes: */
+#if ! HAVE_DECL_SCTP_CLOSED && HAVE_DECL_SCTPS_IDLE
+# define SCTP_CLOSED SCTPS_IDLE
+# undef HAVE_DECL_SCTP_CLOSED
+# define HAVE_DECL_SCTP_CLOSED 1
+#endif
+#if ! HAVE_DECL_SCTP_BOUND && HAVE_DECL_SCTPS_BOUND
+# define SCTP_BOUND SCTPS_BOUND
+# undef HAVE_DECL_SCTP_BOUND
+# define HAVE_DECL_SCTP_BOUND 1
+#endif
+#if ! HAVE_DECL_SCTP_LISTEN && HAVE_DECL_SCTPS_LISTEN
+# define SCTP_LISTEN SCTPS_LISTEN
+# undef HAVE_DECL_SCTP_LISTEN
+# define HAVE_DECL_SCTP_LISTEN 1
+#endif
+#if ! HAVE_DECL_SCTP_COOKIE_WAIT && HAVE_DECL_SCTPS_COOKIE_WAIT
+# define SCTP_COOKIE_WAIT SCTPS_COOKIE_WAIT
+# undef HAVE_DECL_SCTP_COOKIE_WAIT
+# define HAVE_DECL_SCTP_COOKIE_WAIT 1
+#endif
+#if ! HAVE_DECL_SCTP_COOKIE_ECHOED && HAVE_DECL_SCTPS_COOKIE_ECHOED
+# define SCTP_COOKIE_ECHOED SCTPS_COOKIE_ECHOED
+# undef HAVE_DECL_SCTP_COOKIE_ECHOED
+# define HAVE_DECL_SCTP_COOKIE_ECHOED 1
+#endif
+#if ! HAVE_DECL_SCTP_ESTABLISHED && HAVE_DECL_SCTPS_ESTABLISHED
+# define SCTP_ESTABLISHED SCTPS_ESTABLISHED
+# undef HAVE_DECL_SCTP_ESTABLISHED
+# define HAVE_DECL_SCTP_ESTABLISHED 1
+#endif
+#if ! HAVE_DECL_SCTP_SHUTDOWN_PENDING && HAVE_DECL_SCTPS_SHUTDOWN_PENDING
+# define SCTP_SHUTDOWN_PENDING SCTPS_SHUTDOWN_PENDING
+# undef HAVE_DECL_SCTP_SHUTDOWN_PENDING
+# define HAVE_DECL_SCTP_SHUTDOWN_PENDING 1
+#endif
+#if ! HAVE_DECL_SCTP_SHUTDOWN_SENT && HAVE_DECL_SCTPS_SHUTDOWN_SENT
+# define SCTP_SHUTDOWN_SENT SCTPS_SHUTDOWN_SENT
+# undef HAVE_DECL_SCTP_SHUTDOWN_SENT
+# define HAVE_DECL_SCTP_SHUTDOWN_SENT 1
+#endif
+#if ! HAVE_DECL_SCTP_SHUTDOWN_RECEIVED && HAVE_DECL_SCTPS_SHUTDOWN_RECEIVED
+# define SCTP_SHUTDOWN_RECEIVED SCTPS_SHUTDOWN_RECEIVED
+# undef HAVE_DECL_SCTP_SHUTDOWN_RECEIVED
+# define HAVE_DECL_SCTP_SHUTDOWN_RECEIVED 1
+#endif
+#if ! HAVE_DECL_SCTP_SHUTDOWN_ACK_SENT && HAVE_DECL_SCTPS_SHUTDOWN_ACK_SENT
+# define SCTP_SHUTDOWN_ACK_SENT SCTPS_SHUTDOWN_ACK_SENT
+# undef HAVE_DECL_SCTP_SHUTDOWN_ACK_SENT
+# define HAVE_DECL_SCTP_SHUTDOWN_ACK_SENT 1
+#endif
+/* New spelling in lksctp 2.6.22 or maybe even earlier:
+ * adaption -> adaptation
+ */
+#if !defined(SCTP_ADAPTATION_LAYER) && defined (SCTP_ADAPTION_LAYER)
+# define SCTP_ADAPTATION_LAYER SCTP_ADAPTION_LAYER
+# define SCTP_ADAPTATION_INDICATION SCTP_ADAPTION_INDICATION
+# define sctp_adaptation_event sctp_adaption_event
+# define sctp_setadaptation sctp_setadaption
+# define sn_adaptation_event sn_adaption_event
+# define sai_adaptation_ind sai_adaption_ind
+# define ssb_adaptation_ind ssb_adaption_ind
+# define sctp_adaptation_layer_event sctp_adaption_layer_event
+#endif
+
+/*
+ * We *may* need this stuff later when we *fully* implement support for SCTP
+ *
+
+#if defined(__GNUC__) && defined(HAVE_SCTP_BINDX)
+static typeof(sctp_bindx) *esock_sctp_bindx = NULL;
+#else
+static int (*esock_sctp_bindx)
+ (int sd, struct sockaddr *addrs, int addrcnt, int flags) = NULL;
+#endif
+
+#if defined(__GNUC__) && defined(HAVE_SCTP_PEELOFF)
+static typeof(sctp_peeloff) *esock_sctp_peeloff = NULL;
+#else
+static int (*esock_sctp_peeloff)
+ (int sd, sctp_assoc_t assoc_id) = NULL;
+#endif
+
+#if defined(__GNUC__) && defined(HAVE_SCTP_GETLADDRS)
+static typeof(sctp_getladdrs) *esock_sctp_getladdrs = NULL;
+#else
+static int (*esock_sctp_getladdrs)
+ (int sd, sctp_assoc_t assoc_id, struct sockaddr **ss) = NULL;
+#endif
+
+#if defined(__GNUC__) && defined(HAVE_SCTP_FREELADDRS)
+static typeof(sctp_freeladdrs) *esock_sctp_freeladdrs = NULL;
+#else
+static void (*esock_sctp_freeladdrs)(struct sockaddr *addrs) = NULL;
+#endif
+
+#if defined(__GNUC__) && defined(HAVE_SCTP_GETPADDRS)
+static typeof(sctp_getpaddrs) *esock_sctp_getpaddrs = NULL;
+#else
+static int (*esock_sctp_getpaddrs)
+ (int sd, sctp_assoc_t assoc_id, struct sockaddr **ss) = NULL;
+#endif
+
+#if defined(__GNUC__) && defined(HAVE_SCTP_FREEPADDRS)
+static typeof(sctp_freepaddrs) *esock_sctp_freepaddrs = NULL;
+#else
+static void (*esock_sctp_freepaddrs)(struct sockaddr *addrs) = NULL;
+#endif
+
+*/
+
+#endif /* #if defined(HAVE_SCTP_H) */
+
+
+#ifndef WANT_NONBLOCKING
+#define WANT_NONBLOCKING
+#endif
+#include "sys.h"
+
+/* Socket stuff */
+#define INVALID_SOCKET -1
+// #define INVALID_EVENT -1
+#define SOCKET_ERROR -1
+
+#endif /* ifdef __WIN32__ */
+
+#include <erl_nif.h>
+
+#include "socket_dbg.h"
+#include "socket_tarray.h"
+#include "socket_int.h"
+#include "socket_util.h"
+
+#if defined(SOL_IPV6) || defined(IPPROTO_IPV6)
+#define HAVE_IPV6
+#endif
+
+/* All platforms fail on malloc errors. */
+#define FATAL_MALLOC
+
+
+/* Debug stuff... */
+#define SOCKET_GLOBAL_DEBUG_DEFAULT FALSE
+#define SOCKET_DEBUG_DEFAULT FALSE
+
+/* Counters and stuff (Don't know where to sent this stuff anyway) */
+#define SOCKET_NIF_IOW_DEFAULT FALSE
+
+
+
+/* Socket stuff */
+#define INVALID_EVENT -1
+
+#define SOCKET int
+#define HANDLE long int
+
+
+/* ==============================================================================
+ * The IS_SOCKET_ERROR macro below is used for portability reasons.
+ * While POSIX specifies that errors from socket-related system calls
+ * should be indicated with a -1 return value, some users have experienced
+ * non-Windows OS kernels that return negative values other than -1.
+ * While one can argue that such kernels are technically broken, comparing
+ * against values less than 0 covers their out-of-spec return values without
+ * imposing incorrect semantics on systems that manage to correctly return -1
+ * for errors, thus increasing Erlang's portability.
+ */
+#ifdef __WIN32__
+#define IS_SOCKET_ERROR(val) ((val) == SOCKET_ERROR)
+#else
+#define IS_SOCKET_ERROR(val) ((val) < 0)
+#endif
+
+
+/* *** Misc macros and defines *** */
+
+/* This macro exist on some (linux) platforms */
+#if !defined(IPTOS_TOS_MASK)
+#define IPTOS_TOS_MASK 0x1E
+#endif
+#if !defined(IPTOS_TOS)
+#define IPTOS_TOS(tos) ((tos)&IPTOS_TOS_MASK)
+#endif
+
+
+#if defined(TCP_CA_NAME_MAX)
+#define SOCKET_OPT_TCP_CONGESTION_NAME_MAX TCP_CA_NAME_MAX
+#else
+/* This is really excessive, but just in case... */
+#define SOCKET_OPT_TCP_CONGESTION_NAME_MAX 256
+#endif
+
+
+/* *** Socket state defs *** */
+
+#define SOCKET_FLAG_OPEN 0x0001
+#define SOCKET_FLAG_ACTIVE 0x0004
+#define SOCKET_FLAG_LISTEN 0x0008
+#define SOCKET_FLAG_CON 0x0010
+#define SOCKET_FLAG_ACC 0x0020
+#define SOCKET_FLAG_BUSY 0x0040
+#define SOCKET_FLAG_CLOSE 0x0080
+
+#define SOCKET_STATE_CLOSED (0)
+#define SOCKET_STATE_OPEN (SOCKET_FLAG_OPEN)
+#define SOCKET_STATE_CONNECTED (SOCKET_STATE_OPEN | SOCKET_FLAG_ACTIVE)
+#define SOCKET_STATE_LISTENING (SOCKET_STATE_OPEN | SOCKET_FLAG_LISTEN)
+#define SOCKET_STATE_CONNECTING (SOCKET_STATE_OPEN | SOCKET_FLAG_CON)
+#define SOCKET_STATE_ACCEPTING (SOCKET_STATE_LISTENING | SOCKET_FLAG_ACC)
+#define SOCKET_STATE_CLOSING (SOCKET_FLAG_CLOSE)
+
+#define IS_CLOSED(d) \
+ ((d)->state == SOCKET_STATE_CLOSED)
+
+/*
+#define IS_STATE(d, f) \
+ (((d)->state & (f)) == (f))
+*/
+
+#define IS_CLOSING(d) \
+ (((d)->state & SOCKET_STATE_CLOSING) == SOCKET_STATE_CLOSING)
+
+#define IS_OPEN(d) \
+ (((d)->state & SOCKET_FLAG_OPEN) == SOCKET_FLAG_OPEN)
+
+#define IS_CONNECTED(d) \
+ (((d)->state & SOCKET_STATE_CONNECTED) == SOCKET_STATE_CONNECTED)
+
+#define IS_CONNECTING(d) \
+ (((d)->state & SOCKET_FLAG_CON) == SOCKET_FLAG_CON)
+
+/*
+#define IS_BUSY(d) \
+ (((d)->state & SOCKET_FLAG_BUSY) == SOCKET_FLAG_BUSY)
+*/
+
+#define SOCKET_SEND_FLAG_CONFIRM 0
+#define SOCKET_SEND_FLAG_DONTROUTE 1
+#define SOCKET_SEND_FLAG_EOR 2
+#define SOCKET_SEND_FLAG_MORE 3
+#define SOCKET_SEND_FLAG_NOSIGNAL 4
+#define SOCKET_SEND_FLAG_OOB 5
+#define SOCKET_SEND_FLAG_LOW SOCKET_SEND_FLAG_CONFIRM
+#define SOCKET_SEND_FLAG_HIGH SOCKET_SEND_FLAG_OOB
+
+#define SOCKET_RECV_FLAG_CMSG_CLOEXEC 0
+#define SOCKET_RECV_FLAG_ERRQUEUE 1
+#define SOCKET_RECV_FLAG_OOB 2
+#define SOCKET_RECV_FLAG_PEEK 3
+#define SOCKET_RECV_FLAG_TRUNC 4
+#define SOCKET_RECV_FLAG_LOW SOCKET_RECV_FLAG_CMSG_CLOEXEC
+#define SOCKET_RECV_FLAG_HIGH SOCKET_RECV_FLAG_TRUNC
+
+#define SOCKET_RECV_BUFFER_SIZE_DEFAULT 8192
+#define SOCKET_RECV_CTRL_BUFFER_SIZE_DEFAULT 1024
+#define SOCKET_SEND_CTRL_BUFFER_SIZE_DEFAULT 1024
+
+#define VT2S(__VT__) (((__VT__) == SOCKET_OPT_VALUE_TYPE_UNSPEC) ? "unspec" : \
+ (((__VT__) == SOCKET_OPT_VALUE_TYPE_INT) ? "int" : \
+ ((__VT__) == SOCKET_OPT_VALUE_TYPE_BOOL) ? "bool" : \
+ "undef"))
+
+#define SOCKET_OPT_VALUE_TYPE_UNSPEC 0
+#define SOCKET_OPT_VALUE_TYPE_INT 1
+#define SOCKET_OPT_VALUE_TYPE_BOOL 2
+
+typedef union {
+ struct {
+ // 0 = not open, 1 = open
+ unsigned int open:1;
+ // 0 = not conn, 1 = connecting, 2 = connected
+ unsigned int connect:2;
+ // unsigned int connecting:1;
+ // unsigned int connected:1;
+ // 0 = not listen, 1 = listening, 2 = accepting
+ unsigned int listen:2;
+ // unsigned int listening:1;
+ // unsigned int accepting:1;
+ /* Room for more... */
+ } flags;
+ unsigned int field; // Make it easy to reset all flags...
+} SocketState;
+
+/*
+#define IS_OPEN(d) ((d)->state.flags.open)
+#define IS_CONNECTED(d) ((d)->state.flags.connect == SOCKET_STATE_CONNECTED)
+#define IS_CONNECTING(d) ((d)->state.flags.connect == SOCKET_STATE_CONNECTING)
+*/
+
+
+/*----------------------------------------------------------------------------
+ * Interface constants.
+ *
+ * This section must be "identical" to the corresponding socket.hrl
+ */
+
+/* domain */
+#define SOCKET_DOMAIN_LOCAL 1
+#define SOCKET_DOMAIN_INET 2
+#define SOCKET_DOMAIN_INET6 3
+
+/* type */
+#define SOCKET_TYPE_STREAM 1
+#define SOCKET_TYPE_DGRAM 2
+#define SOCKET_TYPE_RAW 3
+// #define SOCKET_TYPE_RDM 4
+#define SOCKET_TYPE_SEQPACKET 5
+
+/* protocol */
+#define SOCKET_PROTOCOL_IP 1
+#define SOCKET_PROTOCOL_TCP 2
+#define SOCKET_PROTOCOL_UDP 3
+#define SOCKET_PROTOCOL_SCTP 4
+#define SOCKET_PROTOCOL_ICMP 5
+#define SOCKET_PROTOCOL_IGMP 6
+
+/* shutdown how */
+#define SOCKET_SHUTDOWN_HOW_RD 0
+#define SOCKET_SHUTDOWN_HOW_WR 1
+#define SOCKET_SHUTDOWN_HOW_RDWR 2
+
+
+#define SOCKET_OPT_LEVEL_OTP 0
+#define SOCKET_OPT_LEVEL_SOCKET 1
+#define SOCKET_OPT_LEVEL_IP 2
+#define SOCKET_OPT_LEVEL_IPV6 3
+#define SOCKET_OPT_LEVEL_TCP 4
+#define SOCKET_OPT_LEVEL_UDP 5
+#define SOCKET_OPT_LEVEL_SCTP 6
+
+#define SOCKET_OPT_OTP_DEBUG 1
+#define SOCKET_OPT_OTP_IOW 2
+#define SOCKET_OPT_OTP_CTRL_PROC 3
+#define SOCKET_OPT_OTP_RCVBUF 4
+#define SOCKET_OPT_OTP_RCVCTRLBUF 6
+#define SOCKET_OPT_OTP_SNDCTRLBUF 7
+#define SOCKET_OPT_OTP_FD 8
+#define SOCKET_OPT_OTP_DOMAIN 0xFF01 // INTERNAL AND ONLY GET
+#define SOCKET_OPT_OTP_TYPE 0xFF02 // INTERNAL AND ONLY GET
+#define SOCKET_OPT_OTP_PROTOCOL 0xFF03 // INTERNAL AND ONLY GET
+
+#define SOCKET_OPT_SOCK_ACCEPTCONN 1
+#define SOCKET_OPT_SOCK_BINDTODEVICE 3
+#define SOCKET_OPT_SOCK_BROADCAST 4
+#define SOCKET_OPT_SOCK_DEBUG 6
+#define SOCKET_OPT_SOCK_DOMAIN 7
+#define SOCKET_OPT_SOCK_DONTROUTE 8
+#define SOCKET_OPT_SOCK_KEEPALIVE 10
+#define SOCKET_OPT_SOCK_LINGER 11
+#define SOCKET_OPT_SOCK_OOBINLINE 13
+#define SOCKET_OPT_SOCK_PEEK_OFF 15
+#define SOCKET_OPT_SOCK_PRIORITY 17
+#define SOCKET_OPT_SOCK_PROTOCOL 18
+#define SOCKET_OPT_SOCK_RCVBUF 19
+#define SOCKET_OPT_SOCK_RCVLOWAT 21
+#define SOCKET_OPT_SOCK_RCVTIMEO 22
+#define SOCKET_OPT_SOCK_REUSEADDR 23
+#define SOCKET_OPT_SOCK_REUSEPORT 24
+#define SOCKET_OPT_SOCK_SNDBUF 27
+#define SOCKET_OPT_SOCK_SNDLOWAT 29
+#define SOCKET_OPT_SOCK_SNDTIMEO 30
+#define SOCKET_OPT_SOCK_TIMESTAMP 31
+#define SOCKET_OPT_SOCK_TYPE 32
+
+#define SOCKET_OPT_IP_ADD_MEMBERSHIP 1
+#define SOCKET_OPT_IP_ADD_SOURCE_MEMBERSHIP 2
+#define SOCKET_OPT_IP_BLOCK_SOURCE 3
+#define SOCKET_OPT_IP_DROP_MEMBERSHIP 5
+#define SOCKET_OPT_IP_DROP_SOURCE_MEMBERSHIP 6
+#define SOCKET_OPT_IP_FREEBIND 7
+#define SOCKET_OPT_IP_HDRINCL 8
+#define SOCKET_OPT_IP_MINTTL 9
+#define SOCKET_OPT_IP_MSFILTER 10
+#define SOCKET_OPT_IP_MTU 11
+#define SOCKET_OPT_IP_MTU_DISCOVER 12
+#define SOCKET_OPT_IP_MULTICAST_ALL 13
+#define SOCKET_OPT_IP_MULTICAST_IF 14
+#define SOCKET_OPT_IP_MULTICAST_LOOP 15
+#define SOCKET_OPT_IP_MULTICAST_TTL 16
+#define SOCKET_OPT_IP_NODEFRAG 17
+#define SOCKET_OPT_IP_PKTINFO 19
+#define SOCKET_OPT_IP_RECVDSTADDR 20
+#define SOCKET_OPT_IP_RECVERR 21
+#define SOCKET_OPT_IP_RECVIF 22
+#define SOCKET_OPT_IP_RECVOPTS 23
+#define SOCKET_OPT_IP_RECVORIGDSTADDR 24
+#define SOCKET_OPT_IP_RECVTOS 25
+#define SOCKET_OPT_IP_RECVTTL 26
+#define SOCKET_OPT_IP_RETOPTS 27
+#define SOCKET_OPT_IP_ROUTER_ALERT 28
+#define SOCKET_OPT_IP_SENDSRCADDR 29 // Same as IP_RECVDSTADDR?
+#define SOCKET_OPT_IP_TOS 30
+#define SOCKET_OPT_IP_TRANSPARENT 31
+#define SOCKET_OPT_IP_TTL 32
+#define SOCKET_OPT_IP_UNBLOCK_SOURCE 33
+
+#define SOCKET_OPT_IPV6_ADDRFORM 1
+#define SOCKET_OPT_IPV6_ADD_MEMBERSHIP 2
+#define SOCKET_OPT_IPV6_AUTHHDR 3
+#define SOCKET_OPT_IPV6_DROP_MEMBERSHIP 6
+#define SOCKET_OPT_IPV6_DSTOPTS 7
+#define SOCKET_OPT_IPV6_FLOWINFO 11
+#define SOCKET_OPT_IPV6_HOPLIMIT 12
+#define SOCKET_OPT_IPV6_HOPOPTS 13
+#define SOCKET_OPT_IPV6_MTU 17
+#define SOCKET_OPT_IPV6_MTU_DISCOVER 18
+#define SOCKET_OPT_IPV6_MULTICAST_HOPS 19
+#define SOCKET_OPT_IPV6_MULTICAST_IF 20
+#define SOCKET_OPT_IPV6_MULTICAST_LOOP 21
+#define SOCKET_OPT_IPV6_RECVERR 24
+#define SOCKET_OPT_IPV6_RECVPKTINFO 25 // PKTINFO on FreeBSD
+#define SOCKET_OPT_IPV6_ROUTER_ALERT 27
+#define SOCKET_OPT_IPV6_RTHDR 28
+#define SOCKET_OPT_IPV6_UNICAST_HOPS 30
+#define SOCKET_OPT_IPV6_V6ONLY 32
+
+#define SOCKET_OPT_TCP_CONGESTION 1
+#define SOCKET_OPT_TCP_CORK 2
+#define SOCKET_OPT_TCP_MAXSEG 7
+#define SOCKET_OPT_TCP_NODELAY 9
+
+#define SOCKET_OPT_UDP_CORK 1
+
+#define SOCKET_OPT_SCTP_ASSOCINFO 2
+#define SOCKET_OPT_SCTP_AUTOCLOSE 8
+#define SOCKET_OPT_SCTP_DISABLE_FRAGMENTS 12
+#define SOCKET_OPT_SCTP_EVENTS 14
+#define SOCKET_OPT_SCTP_INITMSG 18
+#define SOCKET_OPT_SCTP_MAXSEG 21
+#define SOCKET_OPT_SCTP_NODELAY 23
+#define SOCKET_OPT_SCTP_RTOINFO 29
+
+/* We should *eventually* use this instead of hard-coding the size (to 1) */
+#define ESOCK_RECVMSG_IOVEC_SZ 1
+
+
+#define SOCKET_SUPPORTS_OPTIONS 0x0001
+#define SOCKET_SUPPORTS_SCTP 0x0002
+#define SOCKET_SUPPORTS_IPV6 0x0003
+
+
+
+/* =================================================================== *
+ * *
+ * Various enif macros *
+ * *
+ * =================================================================== */
+
+#define SGDBG( proto ) ESOCK_DBG_PRINTF( data.dbg , proto )
+#define SSDBG( __D__ , proto ) ESOCK_DBG_PRINTF( (__D__)->dbg , proto )
+
+
+
+/* =================================================================== *
+ * *
+ * Basic socket operations *
+ * *
+ * =================================================================== */
+
+#ifdef __WIN32__
+
+/* *** Windows macros *** */
+
+#define sock_accept(s, addr, len) \
+ make_noninheritable_handle(accept((s), (addr), (len)))
+#define sock_bind(s, addr, len) bind((s), (addr), (len))
+#define sock_close(s) closesocket((s))
+#define sock_close_event(e) WSACloseEvent(e)
+#define sock_connect(s, addr, len) connect((s), (addr), (len))
+#define sock_create_event(s) WSACreateEvent()
+#define sock_errno() WSAGetLastError()
+#define sock_getopt(s,l,o,v,ln) getsockopt((s),(l),(o),(v),(ln))
+#define sock_htons(x) htons((x))
+#define sock_htonl(x) htonl((x))
+#define sock_listen(s, b) listen((s), (b))
+#define sock_name(s, addr, len) getsockname((s), (addr), (len))
+#define sock_ntohs(x) ntohs((x))
+#define sock_open(domain, type, proto) \
+ make_noninheritable_handle(socket((domain), (type), (proto)))
+#define sock_peer(s, addr, len) getpeername((s), (addr), (len))
+#define sock_recv(s,buf,len,flag) recv((s),(buf),(len),(flag))
+#define sock_recvfrom(s,buf,blen,flag,addr,alen) \
+ recvfrom((s),(buf),(blen),(flag),(addr),(alen))
+#define sock_send(s,buf,len,flag) send((s),(buf),(len),(flag))
+#define sock_sendto(s,buf,blen,flag,addr,alen) \
+ sendto((s),(buf),(blen),(flag),(addr),(alen))
+#define sock_setopt(s,l,o,v,ln) setsockopt((s),(l),(o),(v),(ln))
+#define sock_shutdown(s, how) shutdown((s), (how))
+
+
+#define SET_BLOCKING(s) ioctlsocket(s, FIONBIO, &zero_value)
+#define SET_NONBLOCKING(s) ioctlsocket(s, FIONBIO, &one_value)
+static unsigned long zero_value = 0;
+static unsigned long one_value = 1;
+
+
+#else /* !__WIN32__ */
+
+
+#ifdef HAS_ACCEPT4
+// We have to figure out what the flags are...
+#define sock_accept(s, addr, len) accept4((s), (addr), (len), (SOCK_CLOEXEC))
+#else
+#define sock_accept(s, addr, len) accept((s), (addr), (len))
+#endif
+#define sock_bind(s, addr, len) bind((s), (addr), (len))
+#define sock_close(s) close((s))
+#define sock_close_event(e) /* do nothing */
+#define sock_connect(s, addr, len) connect((s), (addr), (len))
+#define sock_create_event(s) (s) /* return file descriptor */
+#define sock_errno() errno
+#define sock_getopt(s,t,n,v,l) getsockopt((s),(t),(n),(v),(l))
+#define sock_htons(x) htons((x))
+#define sock_htonl(x) htonl((x))
+#define sock_listen(s, b) listen((s), (b))
+#define sock_name(s, addr, len) getsockname((s), (addr), (len))
+#define sock_ntohs(x) ntohs((x))
+#define sock_open(domain, type, proto) socket((domain), (type), (proto))
+#define sock_peer(s, addr, len) getpeername((s), (addr), (len))
+#define sock_recv(s,buf,len,flag) recv((s),(buf),(len),(flag))
+#define sock_recvfrom(s,buf,blen,flag,addr,alen) \
+ recvfrom((s),(buf),(blen),(flag),(addr),(alen))
+#define sock_recvmsg(s,msghdr,flag) recvmsg((s),(msghdr),(flag))
+#define sock_send(s,buf,len,flag) send((s), (buf), (len), (flag))
+#define sock_sendmsg(s,msghdr,flag) sendmsg((s),(msghdr),(flag))
+#define sock_sendto(s,buf,blen,flag,addr,alen) \
+ sendto((s),(buf),(blen),(flag),(addr),(alen))
+#define sock_setopt(s,l,o,v,ln) setsockopt((s),(l),(o),(v),(ln))
+#define sock_shutdown(s, how) shutdown((s), (how))
+
+#endif /* !__WIN32__ */
+
+#ifdef HAVE_SOCKLEN_T
+# define SOCKLEN_T socklen_t
+#else
+# define SOCKLEN_T size_t
+#endif
+
+#ifdef __WIN32__
+#define SOCKOPTLEN_T int
+#else
+#define SOCKOPTLEN_T SOCKLEN_T
+#endif
+
+/* We can use the IPv4 def for this since the beginning
+ * is the same for INET and INET6 */
+#define which_address_port(sap) \
+ ((((sap)->in4.sin_family == AF_INET) || \
+ ((sap)->in4.sin_family == AF_INET6)) ? \
+ ((sap)->in4.sin_port) : -1)
+
+
+typedef struct {
+ int is_active;
+ ErlNifMonitor mon;
+} ESockMonitor;
+
+typedef struct {
+ ErlNifPid pid; // PID of the requesting process
+ ESockMonitor mon; // Monitor to the requesting process
+ ERL_NIF_TERM ref; // The (unique) reference (ID) of the request
+} SocketRequestor;
+
+typedef struct socket_request_queue_element {
+ struct socket_request_queue_element* nextP;
+ SocketRequestor data;
+} SocketRequestQueueElement;
+
+typedef struct {
+ SocketRequestQueueElement* first;
+ SocketRequestQueueElement* last;
+} SocketRequestQueue;
+
+
+typedef struct {
+ /* +++ The actual socket +++ */
+ SOCKET sock;
+ HANDLE event;
+
+ /* +++ Stuff "about" the socket +++ */
+ int domain;
+ int type;
+ int protocol;
+
+ unsigned int state;
+ SocketAddress remote;
+ unsigned int addrLen;
+
+ ErlNifEnv* env;
+
+ /* +++ Controller (owner) process +++ */
+ ErlNifPid ctrlPid;
+ // ErlNifMonitor ctrlMon;
+ ESockMonitor ctrlMon;
+
+ /* +++ Write stuff +++ */
+ ErlNifMutex* writeMtx;
+ SocketRequestor currentWriter;
+ SocketRequestor* currentWriterP; // NULL or points to currentWriter
+ SocketRequestQueue writersQ;
+ BOOLEAN_T isWritable;
+ Uint32 writePkgCnt;
+ Uint32 writeByteCnt;
+ Uint32 writeTries;
+ Uint32 writeWaits;
+ Uint32 writeFails;
+
+ /* +++ Read stuff +++ */
+ ErlNifMutex* readMtx;
+ SocketRequestor currentReader;
+ SocketRequestor* currentReaderP; // NULL or points to currentReader
+ SocketRequestQueue readersQ;
+ BOOLEAN_T isReadable;
+ ErlNifBinary rbuffer; // DO WE NEED THIS
+ Uint32 readCapacity; // DO WE NEED THIS
+ Uint32 readPkgCnt;
+ Uint32 readByteCnt;
+ Uint32 readTries;
+ Uint32 readWaits;
+
+ /* +++ Accept stuff +++ */
+ ErlNifMutex* accMtx;
+ SocketRequestor currentAcceptor;
+ SocketRequestor* currentAcceptorP; // NULL or points to currentAcceptor
+ SocketRequestQueue acceptorsQ;
+
+ /* +++ Config & Misc stuff +++ */
+ size_t rBufSz; // Read buffer size (when data length = 0)
+ /* rNum and rNumCnt are used (together with rBufSz) when calling the recv
+ * function with the Length argument set to 0 (zero).
+ * If rNum is 0 (zero), then rNumCnt is not used and only *one* read will
+ * be done. Also, when get'ing the value of the option (rcvbuf) with
+ * getopt, the value will be reported as an integer. If the rNum has a
+ * value greater then 0 (zero), then it will instead be reported as {N, BufSz}.
+ */
+ unsigned int rNum; // recv: Number of reads using rBufSz
+ unsigned int rNumCnt; // recv: Current number of reads (so far)
+ size_t rCtrlSz; // Read control buffer size
+ size_t wCtrlSz; // Write control buffer size
+ BOOLEAN_T iow; // Inform On (counter) Wrap
+ BOOLEAN_T dbg;
+
+ /* +++ Close stuff +++ */
+ ErlNifMutex* closeMtx;
+ ErlNifPid closerPid;
+ ESockMonitor closerMon;
+ ErlNifEnv* closeEnv;
+ ERL_NIF_TERM closeRef;
+ BOOLEAN_T closeLocal;
+
+} SocketDescriptor;
+
+
+/* Global stuff.
+ */
+typedef struct {
+ /* These are for debugging, testing and the like */
+ // ERL_NIF_TERM version;
+ // ERL_NIF_TERM buildDate;
+ BOOLEAN_T dbg;
+
+ BOOLEAN_T iow; // Where do we send this? Subscription?
+ ErlNifMutex* cntMtx;
+ Uint32 numSockets;
+ Uint32 numTypeStreams;
+ Uint32 numTypeDGrams;
+ Uint32 numTypeSeqPkgs;
+ Uint32 numDomainInet;
+ Uint32 numDomainInet6;
+ Uint32 numDomainLocal;
+ Uint32 numProtoIP;
+ Uint32 numProtoTCP;
+ Uint32 numProtoUDP;
+ Uint32 numProtoSCTP;
+} SocketData;
+
+
+/* ----------------------------------------------------------------------
+ * F o r w a r d s
+ * ----------------------------------------------------------------------
+ */
+
+
+
+static ERL_NIF_TERM nif_info(ErlNifEnv* env,
+ int argc,
+ const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM nif_supports(ErlNifEnv* env,
+ int argc,
+ const ERL_NIF_TERM argv[]);
+/*
+This is a *global* debug function (enable or disable for all
+operations and all sockets.
+static ERL_NIF_TERM nif_debug(ErlNifEnv* env,
+ int argc,
+ const ERL_NIF_TERM argv[]);
+*/
+static ERL_NIF_TERM nif_open(ErlNifEnv* env,
+ int argc,
+ const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM nif_bind(ErlNifEnv* env,
+ int argc,
+ const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM nif_connect(ErlNifEnv* env,
+ int argc,
+ const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM nif_listen(ErlNifEnv* env,
+ int argc,
+ const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM nif_accept(ErlNifEnv* env,
+ int argc,
+ const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM nif_send(ErlNifEnv* env,
+ int argc,
+ const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM nif_sendto(ErlNifEnv* env,
+ int argc,
+ const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM nif_sendmsg(ErlNifEnv* env,
+ int argc,
+ const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM nif_recv(ErlNifEnv* env,
+ int argc,
+ const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM nif_recvfrom(ErlNifEnv* env,
+ int argc,
+ const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM nif_recvmsg(ErlNifEnv* env,
+ int argc,
+ const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM nif_close(ErlNifEnv* env,
+ int argc,
+ const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM nif_shutdown(ErlNifEnv* env,
+ int argc,
+ const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM nif_setopt(ErlNifEnv* env,
+ int argc,
+ const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM nif_getopt(ErlNifEnv* env,
+ int argc,
+ const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM nif_sockname(ErlNifEnv* env,
+ int argc,
+ const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM nif_peername(ErlNifEnv* env,
+ int argc,
+ const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM nif_finalize_connection(ErlNifEnv* env,
+ int argc,
+ const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM nif_finalize_close(ErlNifEnv* env,
+ int argc,
+ const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM nif_cancel(ErlNifEnv* env,
+ int argc,
+ const ERL_NIF_TERM argv[]);
+
+static ERL_NIF_TERM nsupports(ErlNifEnv* env, int key);
+static ERL_NIF_TERM nsupports_options(ErlNifEnv* env);
+static ERL_NIF_TERM nsupports_options_socket(ErlNifEnv* env);
+static ERL_NIF_TERM nsupports_options_ip(ErlNifEnv* env);
+static ERL_NIF_TERM nsupports_options_ipv6(ErlNifEnv* env);
+static ERL_NIF_TERM nsupports_options_tcp(ErlNifEnv* env);
+static ERL_NIF_TERM nsupports_options_udp(ErlNifEnv* env);
+static ERL_NIF_TERM nsupports_options_sctp(ErlNifEnv* env);
+static ERL_NIF_TERM nsupports_sctp(ErlNifEnv* env);
+static ERL_NIF_TERM nsupports_ipv6(ErlNifEnv* env);
+
+static ERL_NIF_TERM nopen(ErlNifEnv* env,
+ int domain,
+ int type,
+ int protocol,
+ char* netns);
+static ERL_NIF_TERM nbind(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ SocketAddress* sockAddrP,
+ unsigned int addrLen);
+static ERL_NIF_TERM nconnect(ErlNifEnv* env,
+ SocketDescriptor* descP);
+static ERL_NIF_TERM nlisten(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ int backlog);
+static ERL_NIF_TERM naccept(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM ref);
+static ERL_NIF_TERM naccept_listening(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM ref);
+static ERL_NIF_TERM naccept_listening_error(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM ref,
+ ErlNifPid caller,
+ int save_errno);
+static ERL_NIF_TERM naccept_listening_accept(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ SOCKET accSock,
+ ErlNifPid caller,
+ SocketAddress* remote);
+static ERL_NIF_TERM naccept_accepting(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM ref);
+static ERL_NIF_TERM naccept_accepting_current(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM ref);
+static ERL_NIF_TERM naccept_accepting_current_accept(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ SOCKET accSock,
+ SocketAddress* remote);
+static ERL_NIF_TERM naccept_accepting_current_error(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM ref,
+ int save_errno);
+static ERL_NIF_TERM naccept_accepting_other(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM ref,
+ ErlNifPid caller);
+static ERL_NIF_TERM naccept_busy_retry(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM ref,
+ ErlNifPid* pid,
+ unsigned int nextState);
+static BOOLEAN_T naccept_accepted(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ SOCKET accSock,
+ ErlNifPid pid,
+ SocketAddress* remote,
+ ERL_NIF_TERM* result);
+static ERL_NIF_TERM nsend(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM sockRef,
+ ERL_NIF_TERM sendRef,
+ ErlNifBinary* dataP,
+ int flags);
+static ERL_NIF_TERM nsendto(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM sockRef,
+ ERL_NIF_TERM sendRef,
+ ErlNifBinary* dataP,
+ int flags,
+ SocketAddress* toAddrP,
+ unsigned int toAddrLen);
+static ERL_NIF_TERM nsendmsg(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM sockRef,
+ ERL_NIF_TERM sendRef,
+ ERL_NIF_TERM eMsgHdr,
+ int flags);
+static ERL_NIF_TERM nrecv(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM sendRef,
+ ERL_NIF_TERM recvRef,
+ int len,
+ int flags);
+static ERL_NIF_TERM nrecvfrom(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM sockRef,
+ ERL_NIF_TERM recvRef,
+ Uint16 bufSz,
+ int flags);
+static ERL_NIF_TERM nrecvmsg(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM sockRef,
+ ERL_NIF_TERM recvRef,
+ Uint16 bufLen,
+ Uint16 ctrlLen,
+ int flags);
+static ERL_NIF_TERM nclose(ErlNifEnv* env,
+ SocketDescriptor* descP);
+static ERL_NIF_TERM nshutdown(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ int how);
+static ERL_NIF_TERM nsetopt(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ BOOLEAN_T isEncoded,
+ BOOLEAN_T isOTP,
+ int level,
+ int eOpt,
+ ERL_NIF_TERM eVal);
+static ERL_NIF_TERM nsetopt_otp(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ int eOpt,
+ ERL_NIF_TERM eVal);
+static ERL_NIF_TERM nsetopt_otp_debug(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+static ERL_NIF_TERM nsetopt_otp_iow(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+static ERL_NIF_TERM nsetopt_otp_ctrl_proc(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+static ERL_NIF_TERM nsetopt_otp_rcvbuf(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+static ERL_NIF_TERM nsetopt_otp_rcvctrlbuf(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+static ERL_NIF_TERM nsetopt_otp_sndctrlbuf(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+static ERL_NIF_TERM nsetopt_native(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ int level,
+ int eOpt,
+ ERL_NIF_TERM eVal);
+static ERL_NIF_TERM nsetopt_level(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ int level,
+ int eOpt,
+ ERL_NIF_TERM eVal);
+static ERL_NIF_TERM nsetopt_lvl_socket(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ int eOpt,
+ ERL_NIF_TERM eVal);
+
+
+/* *** Handling set of socket options for level = socket *** */
+
+#if defined(SO_BINDTODEVICE)
+static ERL_NIF_TERM nsetopt_lvl_sock_bindtodevice(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(SO_BROADCAST)
+static ERL_NIF_TERM nsetopt_lvl_sock_broadcast(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(SO_DEBUG)
+static ERL_NIF_TERM nsetopt_lvl_sock_debug(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(SO_DONTROUTE)
+static ERL_NIF_TERM nsetopt_lvl_sock_dontroute(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(SO_KEEPALIVE)
+static ERL_NIF_TERM nsetopt_lvl_sock_keepalive(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(SO_LINGER)
+static ERL_NIF_TERM nsetopt_lvl_sock_linger(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(SO_OOBINLINE)
+static ERL_NIF_TERM nsetopt_lvl_sock_oobinline(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(SO_PEEK_OFF)
+static ERL_NIF_TERM nsetopt_lvl_sock_peek_off(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(SO_PRIORITY)
+static ERL_NIF_TERM nsetopt_lvl_sock_priority(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(SO_RCVBUF)
+static ERL_NIF_TERM nsetopt_lvl_sock_rcvbuf(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(SO_RCVLOWAT)
+static ERL_NIF_TERM nsetopt_lvl_sock_rcvlowat(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(SO_RCVTIMEO)
+static ERL_NIF_TERM nsetopt_lvl_sock_rcvtimeo(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(SO_REUSEADDR)
+static ERL_NIF_TERM nsetopt_lvl_sock_reuseaddr(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(SO_REUSEPORT)
+static ERL_NIF_TERM nsetopt_lvl_sock_reuseport(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(SO_SNDBUF)
+static ERL_NIF_TERM nsetopt_lvl_sock_sndbuf(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(SO_SNDLOWAT)
+static ERL_NIF_TERM nsetopt_lvl_sock_sndlowat(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(SO_SNDTIMEO)
+static ERL_NIF_TERM nsetopt_lvl_sock_sndtimeo(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(SO_TIMESTAMP)
+static ERL_NIF_TERM nsetopt_lvl_sock_timestamp(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+static ERL_NIF_TERM nsetopt_lvl_ip(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ int eOpt,
+ ERL_NIF_TERM eVal);
+
+/* *** Handling set of socket options for level = ip *** */
+#if defined(IP_ADD_MEMBERSHIP)
+static ERL_NIF_TERM nsetopt_lvl_ip_add_membership(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(IP_ADD_SOURCE_MEMBERSHIP)
+static ERL_NIF_TERM nsetopt_lvl_ip_add_source_membership(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(IP_BLOCK_SOURCE)
+static ERL_NIF_TERM nsetopt_lvl_ip_block_source(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(IP_DROP_MEMBERSHIP)
+static ERL_NIF_TERM nsetopt_lvl_ip_drop_membership(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(IP_DROP_SOURCE_MEMBERSHIP)
+static ERL_NIF_TERM nsetopt_lvl_ip_drop_source_membership(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(IP_FREEBIND)
+static ERL_NIF_TERM nsetopt_lvl_ip_freebind(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(IP_HDRINCL)
+static ERL_NIF_TERM nsetopt_lvl_ip_hdrincl(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(IP_MINTTL)
+static ERL_NIF_TERM nsetopt_lvl_ip_minttl(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(IP_MSFILTER) && defined(IP_MSFILTER_SIZE)
+static ERL_NIF_TERM nsetopt_lvl_ip_msfilter(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+static BOOLEAN_T decode_ip_msfilter_mode(ErlNifEnv* env,
+ ERL_NIF_TERM eVal,
+ Uint32* mode);
+static ERL_NIF_TERM nsetopt_lvl_ip_msfilter_set(ErlNifEnv* env,
+ SOCKET sock,
+ struct ip_msfilter* msfP,
+ SOCKLEN_T optLen);
+#endif
+#if defined(IP_MTU_DISCOVER)
+static ERL_NIF_TERM nsetopt_lvl_ip_mtu_discover(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(IP_MULTICAST_ALL)
+static ERL_NIF_TERM nsetopt_lvl_ip_multicast_all(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(IP_MULTICAST_IF)
+static ERL_NIF_TERM nsetopt_lvl_ip_multicast_if(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(IP_MULTICAST_LOOP)
+static ERL_NIF_TERM nsetopt_lvl_ip_multicast_loop(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(IP_MULTICAST_TTL)
+static ERL_NIF_TERM nsetopt_lvl_ip_multicast_ttl(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(IP_NODEFRAG)
+static ERL_NIF_TERM nsetopt_lvl_ip_nodefrag(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(IP_PKTINFO)
+static ERL_NIF_TERM nsetopt_lvl_ip_pktinfo(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(IP_RECVDSTADDR)
+static ERL_NIF_TERM nsetopt_lvl_ip_recvdstaddr(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(IP_RECVERR)
+static ERL_NIF_TERM nsetopt_lvl_ip_recverr(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(IP_RECVIF)
+static ERL_NIF_TERM nsetopt_lvl_ip_recvif(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(IP_RECVOPTS)
+static ERL_NIF_TERM nsetopt_lvl_ip_recvopts(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(IP_RECVORIGDSTADDR)
+static ERL_NIF_TERM nsetopt_lvl_ip_recvorigdstaddr(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(IP_RECVTOS)
+static ERL_NIF_TERM nsetopt_lvl_ip_recvtos(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(IP_RECVTTL)
+static ERL_NIF_TERM nsetopt_lvl_ip_recvttl(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(IP_RETOPTS)
+static ERL_NIF_TERM nsetopt_lvl_ip_retopts(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(IP_ROUTER_ALERT)
+static ERL_NIF_TERM nsetopt_lvl_ip_router_alert(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(IP_SENDSRCADDR)
+static ERL_NIF_TERM nsetopt_lvl_ip_sendsrcaddr(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(IP_TOS)
+static ERL_NIF_TERM nsetopt_lvl_ip_tos(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(IP_TRANSPARENT)
+static ERL_NIF_TERM nsetopt_lvl_ip_transparent(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(IP_TTL)
+static ERL_NIF_TERM nsetopt_lvl_ip_ttl(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(IP_UNBLOCK_SOURCE)
+static ERL_NIF_TERM nsetopt_lvl_ip_unblock_source(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+
+#if defined(IP_DROP_MEMBERSHIP) || defined(IP_ADD_MEMBERSHIP)
+static
+ERL_NIF_TERM nsetopt_lvl_ip_update_membership(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal,
+ int opt);
+#endif
+#if defined(IP_ADD_SOURCE_MEMBERSHIP) || defined(IP_DROP_SOURCE_MEMBERSHIP) || defined(IP_BLOCK_SOURCE) || defined(IP_UNBLOCK_SOURCE)
+static
+ERL_NIF_TERM nsetopt_lvl_ip_update_source(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal,
+ int opt);
+#endif
+
+
+/* *** Handling set of socket options for level = ipv6 *** */
+#if defined(HAVE_IPV6)
+static ERL_NIF_TERM nsetopt_lvl_ipv6(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ int eOpt,
+ ERL_NIF_TERM eVal);
+#if defined(IPV6_ADDRFORM)
+static ERL_NIF_TERM nsetopt_lvl_ipv6_addrform(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(IPV6_ADD_MEMBERSHIP)
+static ERL_NIF_TERM nsetopt_lvl_ipv6_add_membership(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(IPV6_AUTHHDR)
+static ERL_NIF_TERM nsetopt_lvl_ipv6_authhdr(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(IPV6_DROP_MEMBERSHIP)
+static ERL_NIF_TERM nsetopt_lvl_ipv6_drop_membership(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(IPV6_DSTOPTS)
+static ERL_NIF_TERM nsetopt_lvl_ipv6_dstopts(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(IPV6_FLOWINFO)
+static ERL_NIF_TERM nsetopt_lvl_ipv6_flowinfo(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(IPV6_HOPLIMIT)
+static ERL_NIF_TERM nsetopt_lvl_ipv6_hoplimit(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(IPV6_HOPOPTS)
+static ERL_NIF_TERM nsetopt_lvl_ipv6_hopopts(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(IPV6_MTU)
+static ERL_NIF_TERM nsetopt_lvl_ipv6_mtu(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(IPV6_MTU_DISCOVER)
+static ERL_NIF_TERM nsetopt_lvl_ipv6_mtu_discover(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(IPV6_MULTICAST_HOPS)
+static ERL_NIF_TERM nsetopt_lvl_ipv6_multicast_hops(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(IPV6_MULTICAST_IF)
+static ERL_NIF_TERM nsetopt_lvl_ipv6_multicast_if(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(IPV6_MULTICAST_LOOP)
+static ERL_NIF_TERM nsetopt_lvl_ipv6_multicast_loop(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(IPV6_RECVERR)
+static ERL_NIF_TERM nsetopt_lvl_ipv6_recverr(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(IPV6_RECVPKTINFO) || defined(IPV6_PKTINFO)
+static ERL_NIF_TERM nsetopt_lvl_ipv6_recvpktinfo(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(IPV6_ROUTER_ALERT)
+static ERL_NIF_TERM nsetopt_lvl_ipv6_router_alert(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(IPV6_RTHDR)
+static ERL_NIF_TERM nsetopt_lvl_ipv6_rthdr(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(IPV6_UNICAST_HOPS)
+static ERL_NIF_TERM nsetopt_lvl_ipv6_unicast_hops(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(IPV6_V6ONLY)
+static ERL_NIF_TERM nsetopt_lvl_ipv6_v6only(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+
+#if defined(IPV6_ADD_MEMBERSHIP) || defined(IPV6_DROP_MEMBERSHIP)
+static ERL_NIF_TERM nsetopt_lvl_ipv6_update_membership(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal,
+ int opt);
+#endif
+
+#endif // defined(HAVE_IPV6)
+static ERL_NIF_TERM nsetopt_lvl_tcp(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ int eOpt,
+ ERL_NIF_TERM eVal);
+#if defined(TCP_CONGESTION)
+static ERL_NIF_TERM nsetopt_lvl_tcp_congestion(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(TCP_MAXSEG)
+static ERL_NIF_TERM nsetopt_lvl_tcp_maxseg(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(TCP_NODELAY)
+static ERL_NIF_TERM nsetopt_lvl_tcp_nodelay(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+static ERL_NIF_TERM nsetopt_lvl_udp(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ int eOpt,
+ ERL_NIF_TERM eVal);
+#if defined(UDP_CORK)
+static ERL_NIF_TERM nsetopt_lvl_udp_cork(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(HAVE_SCTP)
+static ERL_NIF_TERM nsetopt_lvl_sctp(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ int eOpt,
+ ERL_NIF_TERM eVal);
+#if defined(SCTP_ASSOCINFO)
+static ERL_NIF_TERM nsetopt_lvl_sctp_associnfo(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(SCTP_AUTOCLOSE)
+static ERL_NIF_TERM nsetopt_lvl_sctp_autoclose(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(SCTP_DISABLE_FRAGMENTS)
+static ERL_NIF_TERM nsetopt_lvl_sctp_disable_fragments(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(SCTP_EVENTS)
+static ERL_NIF_TERM nsetopt_lvl_sctp_events(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(SCTP_INITMSG)
+static ERL_NIF_TERM nsetopt_lvl_sctp_initmsg(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(SCTP_MAXSEG)
+static ERL_NIF_TERM nsetopt_lvl_sctp_maxseg(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(SCTP_NODELAY)
+static ERL_NIF_TERM nsetopt_lvl_sctp_nodelay(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#if defined(SCTP_RTOINFO)
+static ERL_NIF_TERM nsetopt_lvl_sctp_rtoinfo(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal);
+#endif
+#endif // defined(HAVE_SCTP)
+
+static ERL_NIF_TERM ngetopt(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ BOOLEAN_T isEncoded,
+ BOOLEAN_T isOTP,
+ int level,
+ ERL_NIF_TERM eOpt);
+static ERL_NIF_TERM ngetopt_otp(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ int eOpt);
+static ERL_NIF_TERM ngetopt_otp_debug(ErlNifEnv* env,
+ SocketDescriptor* descP);
+static ERL_NIF_TERM ngetopt_otp_iow(ErlNifEnv* env,
+ SocketDescriptor* descP);
+static ERL_NIF_TERM ngetopt_otp_ctrl_proc(ErlNifEnv* env,
+ SocketDescriptor* descP);
+static ERL_NIF_TERM ngetopt_otp_rcvbuf(ErlNifEnv* env,
+ SocketDescriptor* descP);
+static ERL_NIF_TERM ngetopt_otp_rcvctrlbuf(ErlNifEnv* env,
+ SocketDescriptor* descP);
+static ERL_NIF_TERM ngetopt_otp_sndctrlbuf(ErlNifEnv* env,
+ SocketDescriptor* descP);
+static ERL_NIF_TERM ngetopt_otp_fd(ErlNifEnv* env,
+ SocketDescriptor* descP);
+static ERL_NIF_TERM ngetopt_otp_domain(ErlNifEnv* env,
+ SocketDescriptor* descP);
+static ERL_NIF_TERM ngetopt_otp_type(ErlNifEnv* env,
+ SocketDescriptor* descP);
+static ERL_NIF_TERM ngetopt_otp_protocol(ErlNifEnv* env,
+ SocketDescriptor* descP);
+static ERL_NIF_TERM ngetopt_native(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ int level,
+ ERL_NIF_TERM eOpt);
+static ERL_NIF_TERM ngetopt_native_unspec(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ int level,
+ int opt,
+ SOCKOPTLEN_T valueSz);
+static ERL_NIF_TERM ngetopt_level(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ int level,
+ int eOpt);
+static ERL_NIF_TERM ngetopt_lvl_socket(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ int eOpt);
+#if defined(SO_ACCEPTCONN)
+static ERL_NIF_TERM ngetopt_lvl_sock_acceptconn(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(SO_BINDTODEVICE)
+static ERL_NIF_TERM ngetopt_lvl_sock_bindtodevice(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(SO_BROADCAST)
+static ERL_NIF_TERM ngetopt_lvl_sock_broadcast(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(SO_DEBUG)
+static ERL_NIF_TERM ngetopt_lvl_sock_debug(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(SO_DOMAIN)
+static ERL_NIF_TERM ngetopt_lvl_sock_domain(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(SO_DONTROUTE)
+static ERL_NIF_TERM ngetopt_lvl_sock_dontroute(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(SO_KEEPALIVE)
+static ERL_NIF_TERM ngetopt_lvl_sock_keepalive(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(SO_LINGER)
+static ERL_NIF_TERM ngetopt_lvl_sock_linger(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(SO_OOBINLINE)
+static ERL_NIF_TERM ngetopt_lvl_sock_oobinline(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(SO_PEEK_OFF)
+static ERL_NIF_TERM ngetopt_lvl_sock_peek_off(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(SO_PRIORITY)
+static ERL_NIF_TERM ngetopt_lvl_sock_priority(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(SO_PROTOCOL)
+static ERL_NIF_TERM ngetopt_lvl_sock_protocol(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(SO_RCVBUF)
+static ERL_NIF_TERM ngetopt_lvl_sock_rcvbuf(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(SO_RCVLOWAT)
+static ERL_NIF_TERM ngetopt_lvl_sock_rcvlowat(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(SO_RCVTIMEO)
+static ERL_NIF_TERM ngetopt_lvl_sock_rcvtimeo(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(SO_REUSEADDR)
+static ERL_NIF_TERM ngetopt_lvl_sock_reuseaddr(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(SO_REUSEPORT)
+static ERL_NIF_TERM ngetopt_lvl_sock_reuseport(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(SO_SNDBUF)
+static ERL_NIF_TERM ngetopt_lvl_sock_sndbuf(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(SO_SNDLOWAT)
+static ERL_NIF_TERM ngetopt_lvl_sock_sndlowat(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(SO_SNDTIMEO)
+static ERL_NIF_TERM ngetopt_lvl_sock_sndtimeo(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(SO_TIMESTAMP)
+static ERL_NIF_TERM ngetopt_lvl_sock_timestamp(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(SO_TYPE)
+static ERL_NIF_TERM ngetopt_lvl_sock_type(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+static ERL_NIF_TERM ngetopt_lvl_ip(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ int eOpt);
+#if defined(IP_FREEBIND)
+static ERL_NIF_TERM ngetopt_lvl_ip_freebind(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(IP_HDRINCL)
+static ERL_NIF_TERM ngetopt_lvl_ip_hdrincl(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(IP_MINTTL)
+static ERL_NIF_TERM ngetopt_lvl_ip_minttl(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(IP_MTU)
+static ERL_NIF_TERM ngetopt_lvl_ip_mtu(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(IP_MTU_DISCOVER)
+static ERL_NIF_TERM ngetopt_lvl_ip_mtu_discover(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(IP_MULTICAST_ALL)
+static ERL_NIF_TERM ngetopt_lvl_ip_multicast_all(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(IP_MULTICAST_IF)
+static ERL_NIF_TERM ngetopt_lvl_ip_multicast_if(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(IP_MULTICAST_LOOP)
+static ERL_NIF_TERM ngetopt_lvl_ip_multicast_loop(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(IP_MULTICAST_TTL)
+static ERL_NIF_TERM ngetopt_lvl_ip_multicast_ttl(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(IP_NODEFRAG)
+static ERL_NIF_TERM ngetopt_lvl_ip_nodefrag(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(IP_PKTINFO)
+static ERL_NIF_TERM ngetopt_lvl_ip_pktinfo(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(IP_RECVDSTADDR)
+static ERL_NIF_TERM ngetopt_lvl_ip_recvdstaddr(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(IP_RECVERR)
+static ERL_NIF_TERM ngetopt_lvl_ip_recverr(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(IP_RECVIF)
+static ERL_NIF_TERM ngetopt_lvl_ip_recvif(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(IP_RECVOPTS)
+static ERL_NIF_TERM ngetopt_lvl_ip_recvopts(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(IP_RECVORIGDSTADDR)
+static ERL_NIF_TERM ngetopt_lvl_ip_recvorigdstaddr(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(IP_RECVTOS)
+static ERL_NIF_TERM ngetopt_lvl_ip_recvtos(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(IP_RECVTTL)
+static ERL_NIF_TERM ngetopt_lvl_ip_recvttl(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(IP_RETOPTS)
+static ERL_NIF_TERM ngetopt_lvl_ip_retopts(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(IP_ROUTER_ALERT)
+static ERL_NIF_TERM ngetopt_lvl_ip_router_alert(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(IP_SENDSRCADDR)
+static ERL_NIF_TERM ngetopt_lvl_ip_sendsrcaddr(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(IP_TOS)
+static ERL_NIF_TERM ngetopt_lvl_ip_tos(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(IP_TRANSPARENT)
+static ERL_NIF_TERM ngetopt_lvl_ip_transparent(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(IP_TTL)
+static ERL_NIF_TERM ngetopt_lvl_ip_ttl(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(HAVE_IPV6)
+static ERL_NIF_TERM ngetopt_lvl_ipv6(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ int eOpt);
+#if defined(IPV6_AUTHHDR)
+static ERL_NIF_TERM ngetopt_lvl_ipv6_authhdr(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(IPV6_DSTOPTS)
+static ERL_NIF_TERM ngetopt_lvl_ipv6_dstopts(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(IPV6_FLOWINFO)
+static ERL_NIF_TERM ngetopt_lvl_ipv6_flowinfo(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(IPV6_HOPLIMIT)
+static ERL_NIF_TERM ngetopt_lvl_ipv6_hoplimit(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(IPV6_HOPOPTS)
+static ERL_NIF_TERM ngetopt_lvl_ipv6_hopopts(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(IPV6_MTU)
+static ERL_NIF_TERM ngetopt_lvl_ipv6_mtu(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(IPV6_MTU_DISCOVER)
+static ERL_NIF_TERM ngetopt_lvl_ipv6_mtu_discover(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(IPV6_MULTICAST_HOPS)
+static ERL_NIF_TERM ngetopt_lvl_ipv6_multicast_hops(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(IPV6_MULTICAST_IF)
+static ERL_NIF_TERM ngetopt_lvl_ipv6_multicast_if(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(IPV6_MULTICAST_LOOP)
+static ERL_NIF_TERM ngetopt_lvl_ipv6_multicast_loop(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(IPV6_RECVERR)
+static ERL_NIF_TERM ngetopt_lvl_ipv6_recverr(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(IPV6_RECVPKTINFO) || defined(IPV6_PKTINFO)
+static ERL_NIF_TERM ngetopt_lvl_ipv6_recvpktinfo(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(IPV6_ROUTER_ALERT)
+static ERL_NIF_TERM ngetopt_lvl_ipv6_router_alert(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(IPV6_RTHDR)
+static ERL_NIF_TERM ngetopt_lvl_ipv6_rthdr(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(IPV6_UNICAST_HOPS)
+static ERL_NIF_TERM ngetopt_lvl_ipv6_unicast_hops(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(IPV6_V6ONLY)
+static ERL_NIF_TERM ngetopt_lvl_ipv6_v6only(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+
+#endif // defined(HAVE_IPV6)
+
+static ERL_NIF_TERM ngetopt_lvl_tcp(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ int eOpt);
+#if defined(TCP_CONGESTION)
+static ERL_NIF_TERM ngetopt_lvl_tcp_congestion(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(TCP_MAXSEG)
+static ERL_NIF_TERM ngetopt_lvl_tcp_maxseg(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(TCP_NODELAY)
+static ERL_NIF_TERM ngetopt_lvl_tcp_nodelay(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+static ERL_NIF_TERM ngetopt_lvl_udp(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ int eOpt);
+#if defined(UDP_CORK)
+static ERL_NIF_TERM ngetopt_lvl_udp_cork(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(HAVE_SCTP)
+static ERL_NIF_TERM ngetopt_lvl_sctp(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ int eOpt);
+#if defined(SCTP_ASSOCINFO)
+static ERL_NIF_TERM ngetopt_lvl_sctp_associnfo(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(SCTP_AUTOCLOSE)
+static ERL_NIF_TERM ngetopt_lvl_sctp_autoclose(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(SCTP_DISABLE_FRAGMENTS)
+static ERL_NIF_TERM ngetopt_lvl_sctp_disable_fragments(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(SCTP_MAXSEG)
+static ERL_NIF_TERM ngetopt_lvl_sctp_maxseg(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(SCTP_INITMSG)
+static ERL_NIF_TERM ngetopt_lvl_sctp_initmsg(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(SCTP_NODELAY)
+static ERL_NIF_TERM ngetopt_lvl_sctp_nodelay(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#if defined(SCTP_RTOINFO)
+static ERL_NIF_TERM ngetopt_lvl_sctp_rtoinfo(ErlNifEnv* env,
+ SocketDescriptor* descP);
+#endif
+#endif // defined(HAVE_SCTP)
+static ERL_NIF_TERM nsockname(ErlNifEnv* env,
+ SocketDescriptor* descP);
+static ERL_NIF_TERM npeername(ErlNifEnv* env,
+ SocketDescriptor* descP);
+static ERL_NIF_TERM ncancel(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM op,
+ ERL_NIF_TERM opRef);
+static ERL_NIF_TERM ncancel_connect(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM opRef);
+static ERL_NIF_TERM ncancel_accept(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM opRef);
+static ERL_NIF_TERM ncancel_accept_current(ErlNifEnv* env,
+ SocketDescriptor* descP);
+static ERL_NIF_TERM ncancel_accept_waiting(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM opRef);
+static ERL_NIF_TERM ncancel_send(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM opRef);
+static ERL_NIF_TERM ncancel_send_current(ErlNifEnv* env,
+ SocketDescriptor* descP);
+static ERL_NIF_TERM ncancel_send_waiting(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM opRef);
+static ERL_NIF_TERM ncancel_recv(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM opRef);
+static ERL_NIF_TERM ncancel_recv_current(ErlNifEnv* env,
+ SocketDescriptor* descP);
+static ERL_NIF_TERM ncancel_recv_waiting(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM opRef);
+static ERL_NIF_TERM ncancel_read_select(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM opRef);
+static ERL_NIF_TERM ncancel_write_select(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM opRef);
+static ERL_NIF_TERM ncancel_mode_select(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM opRef,
+ int smode,
+ int rmode);
+
+static ERL_NIF_TERM nsetopt_str_opt(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ int level,
+ int opt,
+ int max,
+ ERL_NIF_TERM eVal);
+static ERL_NIF_TERM nsetopt_bool_opt(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ int level,
+ int opt,
+ ERL_NIF_TERM eVal);
+static ERL_NIF_TERM nsetopt_int_opt(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ int level,
+ int opt,
+ ERL_NIF_TERM eVal);
+static ERL_NIF_TERM nsetopt_timeval_opt(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ int level,
+ int opt,
+ ERL_NIF_TERM eVal);
+
+static ERL_NIF_TERM ngetopt_str_opt(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ int level,
+ int opt,
+ int max);
+static ERL_NIF_TERM ngetopt_bool_opt(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ int level,
+ int opt);
+static ERL_NIF_TERM ngetopt_int_opt(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ int level,
+ int opt);
+static ERL_NIF_TERM ngetopt_timeval_opt(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ int level,
+ int opt);
+
+static BOOLEAN_T send_check_writer(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM ref,
+ ERL_NIF_TERM* checkResult);
+static ERL_NIF_TERM send_check_result(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ssize_t written,
+ ssize_t dataSize,
+ int saveErrno,
+ ERL_NIF_TERM sockRef,
+ ERL_NIF_TERM sendRef);
+static BOOLEAN_T recv_check_reader(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM ref,
+ ERL_NIF_TERM* checkResult);
+static char* recv_init_current_reader(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM ref);
+static ERL_NIF_TERM recv_update_current_reader(ErlNifEnv* env,
+ SocketDescriptor* descP);
+static void recv_error_current_reader(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM sockRef,
+ ERL_NIF_TERM reason);
+static ERL_NIF_TERM recv_check_result(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ int read,
+ int toRead,
+ int saveErrno,
+ ErlNifBinary* bufP,
+ ERL_NIF_TERM sockRef,
+ ERL_NIF_TERM recvRef);
+static ERL_NIF_TERM recvfrom_check_result(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ int read,
+ int saveErrno,
+ ErlNifBinary* bufP,
+ SocketAddress* fromAddrP,
+ unsigned int fromAddrLen,
+ ERL_NIF_TERM sockRef,
+ ERL_NIF_TERM recvRef);
+static ERL_NIF_TERM recvmsg_check_result(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ int read,
+ int saveErrno,
+ struct msghdr* msgHdrP,
+ ErlNifBinary* dataBufP,
+ ErlNifBinary* ctrlBufP,
+ ERL_NIF_TERM sockRef,
+ ERL_NIF_TERM recvRef);
+
+static ERL_NIF_TERM nfinalize_connection(ErlNifEnv* env,
+ SocketDescriptor* descP);
+static ERL_NIF_TERM nfinalize_close(ErlNifEnv* env,
+ SocketDescriptor* descP);
+
+extern char* encode_msghdr(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ int read,
+ struct msghdr* msgHdrP,
+ ErlNifBinary* dataBufP,
+ ErlNifBinary* ctrlBufP,
+ ERL_NIF_TERM* eSockAddr);
+extern char* encode_cmsghdrs(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ErlNifBinary* cmsgBinP,
+ struct msghdr* msgHdrP,
+ ERL_NIF_TERM* eCMsgHdr);
+extern char* decode_cmsghdrs(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eCMsgHdr,
+ char* cmsgHdrBufP,
+ size_t cmsgHdrBufLen,
+ size_t* cmsgHdrBufUsed);
+extern char* decode_cmsghdr(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eCMsgHdr,
+ char* bufP,
+ size_t rem,
+ size_t* used);
+static char* encode_cmsghdr_level(ErlNifEnv* env,
+ int level,
+ ERL_NIF_TERM* eLevel);
+static char* decode_cmsghdr_level(ErlNifEnv* env,
+ ERL_NIF_TERM eLevel,
+ int* level);
+static char* encode_cmsghdr_type(ErlNifEnv* env,
+ int level,
+ int type,
+ ERL_NIF_TERM* eType);
+static char* decode_cmsghdr_type(ErlNifEnv* env,
+ int level,
+ ERL_NIF_TERM eType,
+ int* type);
+static char* encode_cmsghdr_data(ErlNifEnv* env,
+ ERL_NIF_TERM ctrlBuf,
+ int level,
+ int type,
+ unsigned char* dataP,
+ size_t dataPos,
+ size_t dataLen,
+ ERL_NIF_TERM* eCMsgHdrData);
+static char* encode_cmsghdr_data_socket(ErlNifEnv* env,
+ ERL_NIF_TERM ctrlBuf,
+ int type,
+ unsigned char* dataP,
+ size_t dataPos,
+ size_t dataLen,
+ ERL_NIF_TERM* eCMsgHdrData);
+static char* encode_cmsghdr_data_ip(ErlNifEnv* env,
+ ERL_NIF_TERM ctrlBuf,
+ int type,
+ unsigned char* dataP,
+ size_t dataPos,
+ size_t dataLen,
+ ERL_NIF_TERM* eCMsgHdrData);
+#if defined(HAVE_IPV6)
+static char* encode_cmsghdr_data_ipv6(ErlNifEnv* env,
+ ERL_NIF_TERM ctrlBuf,
+ int type,
+ unsigned char* dataP,
+ size_t dataPos,
+ size_t dataLen,
+ ERL_NIF_TERM* eCMsgHdrData);
+#endif
+extern char* encode_msghdr_flags(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ int msgFlags,
+ ERL_NIF_TERM* flags);
+static char* decode_cmsghdr_data(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ char* bufP,
+ size_t rem,
+ int level,
+ int type,
+ ERL_NIF_TERM eData,
+ size_t* used);
+static char* decode_cmsghdr_final(SocketDescriptor* descP,
+ char* bufP,
+ size_t rem,
+ int level,
+ int type,
+ char* data,
+ int sz,
+ size_t* used);
+static BOOLEAN_T decode_sock_linger(ErlNifEnv* env,
+ ERL_NIF_TERM eVal,
+ struct linger* valP);
+#if defined(IP_TOS)
+static BOOLEAN_T decode_ip_tos(ErlNifEnv* env,
+ ERL_NIF_TERM eVal,
+ int* val);
+#endif
+#if defined(IP_MTU_DISCOVER)
+static char* decode_ip_pmtudisc(ErlNifEnv* env,
+ ERL_NIF_TERM eVal,
+ int* val);
+#endif
+#if defined(IP_MTU_DISCOVER)
+static void encode_ip_pmtudisc(ErlNifEnv* env,
+ int val,
+ ERL_NIF_TERM* eVal);
+#endif
+#if defined(IPV6_MTU_DISCOVER)
+static char* decode_ipv6_pmtudisc(ErlNifEnv* env,
+ ERL_NIF_TERM eVal,
+ int* val);
+#endif
+#if defined(IPV6_MTU_DISCOVER)
+static void encode_ipv6_pmtudisc(ErlNifEnv* env,
+ int val,
+ ERL_NIF_TERM* eVal);
+#endif
+
+/*
+static BOOLEAN_T decode_bool(ErlNifEnv* env,
+ ERL_NIF_TERM eVal,
+ BOOLEAN_T* val);
+*/
+static BOOLEAN_T decode_native_get_opt(ErlNifEnv* env,
+ ERL_NIF_TERM eVal,
+ int* opt,
+ Uint16* valueType,
+ int* valueSz);
+// static void encode_bool(BOOLEAN_T val, ERL_NIF_TERM* eVal);
+static ERL_NIF_TERM encode_ip_tos(ErlNifEnv* env, int val);
+
+static void inform_waiting_procs(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ SocketRequestQueue* q,
+ BOOLEAN_T free,
+ ERL_NIF_TERM reason);
+
+static int socket_setopt(int sock,
+ int level,
+ int opt,
+ const void* optVal,
+ const socklen_t optLen);
+
+static BOOLEAN_T verify_is_connected(SocketDescriptor* descP, int* err);
+
+static SocketDescriptor* alloc_descriptor(SOCKET sock, HANDLE event);
+
+static int compare_pids(ErlNifEnv* env,
+ const ErlNifPid* pid1,
+ const ErlNifPid* pid2);
+
+
+
+static BOOLEAN_T edomain2domain(int edomain, int* domain);
+static BOOLEAN_T etype2type(int etype, int* type);
+static BOOLEAN_T eproto2proto(ErlNifEnv* env,
+ const ERL_NIF_TERM eproto,
+ int* proto);
+static BOOLEAN_T ehow2how(unsigned int ehow, int* how);
+static BOOLEAN_T esendflags2sendflags(unsigned int esendflags, int* sendflags);
+static BOOLEAN_T erecvflags2recvflags(unsigned int erecvflags, int* recvflags);
+static BOOLEAN_T elevel2level(BOOLEAN_T isEncoded,
+ int eLevel,
+ BOOLEAN_T* isOTP,
+ int* level);
+#ifdef HAVE_SETNS
+static BOOLEAN_T emap2netns(ErlNifEnv* env, ERL_NIF_TERM map, char** netns);
+static BOOLEAN_T change_network_namespace(char* netns, int* cns, int* err);
+static BOOLEAN_T restore_network_namespace(int ns, SOCKET sock, int* err);
+#endif
+
+static BOOLEAN_T cnt_inc(Uint32* cnt, Uint32 inc);
+static void cnt_dec(Uint32* cnt, Uint32 dec);
+
+static void inc_socket(int domain, int type, int protocol);
+static void dec_socket(int domain, int type, int protocol);
+
+
+static BOOLEAN_T acceptor_search4pid(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ErlNifPid* pid);
+static ERL_NIF_TERM acceptor_push(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ErlNifPid pid,
+ ERL_NIF_TERM ref);
+static BOOLEAN_T acceptor_pop(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ErlNifPid* pid,
+ // ErlNifMonitor* mon,
+ ESockMonitor* mon,
+ ERL_NIF_TERM* ref);
+static BOOLEAN_T acceptor_unqueue(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ const ErlNifPid* pid);
+
+static BOOLEAN_T writer_search4pid(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ErlNifPid* pid);
+static ERL_NIF_TERM writer_push(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ErlNifPid pid,
+ ERL_NIF_TERM ref);
+static BOOLEAN_T writer_pop(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ErlNifPid* pid,
+ // ErlNifMonitor* mon,
+ ESockMonitor* mon,
+ ERL_NIF_TERM* ref);
+static BOOLEAN_T writer_unqueue(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ const ErlNifPid* pid);
+
+static BOOLEAN_T reader_search4pid(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ErlNifPid* pid);
+static ERL_NIF_TERM reader_push(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ErlNifPid pid,
+ ERL_NIF_TERM ref);
+static BOOLEAN_T reader_pop(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ErlNifPid* pid,
+ // ErlNifMonitor* mon,
+ ESockMonitor* mon,
+ ERL_NIF_TERM* ref);
+static BOOLEAN_T reader_unqueue(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ const ErlNifPid* pid);
+
+static BOOLEAN_T qsearch4pid(ErlNifEnv* env,
+ SocketRequestQueue* q,
+ ErlNifPid* pid);
+static void qpush(SocketRequestQueue* q,
+ SocketRequestQueueElement* e);
+static SocketRequestQueueElement* qpop(SocketRequestQueue* q);
+static BOOLEAN_T qunqueue(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ const char* slogan,
+ SocketRequestQueue* q,
+ const ErlNifPid* pid);
+
+static int esock_monitor(const char* slogan,
+ ErlNifEnv* env,
+ SocketDescriptor* descP,
+ const ErlNifPid* pid,
+ ESockMonitor* mon);
+static int esock_demonitor(const char* slogan,
+ ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ESockMonitor* monP);
+static void esock_monitor_init(ESockMonitor* mon);
+/*
+static int esock_monitor_compare(const ErlNifMonitor* mon1,
+ const ESockMonitor* mon2);
+*/
+
+
+/*
+#if defined(HAVE_SYS_UN_H) || defined(SO_BINDTODEVICE)
+static size_t my_strnlen(const char *s, size_t maxlen);
+#endif
+*/
+
+static void socket_dtor(ErlNifEnv* env, void* obj);
+static void socket_stop(ErlNifEnv* env,
+ void* obj,
+ int fd,
+ int is_direct_call);
+static void socket_down(ErlNifEnv* env,
+ void* obj,
+ const ErlNifPid* pid,
+ const ErlNifMonitor* mon);
+static void socket_down_acceptor(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ const ErlNifPid* pid);
+static void socket_down_writer(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ const ErlNifPid* pid);
+static void socket_down_reader(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ const ErlNifPid* pid);
+
+static char* esock_send_close_msg(ErlNifEnv* env,
+ SocketDescriptor* descP);
+static char* esock_send_abort_msg(ErlNifEnv* env,
+ ERL_NIF_TERM sockRef,
+ ERL_NIF_TERM recvRef,
+ ERL_NIF_TERM reason,
+ ErlNifPid* pid);
+static char* esock_send_socket_msg(ErlNifEnv* env,
+ ERL_NIF_TERM sockRef,
+ ERL_NIF_TERM tag,
+ ERL_NIF_TERM info,
+ ErlNifPid* pid,
+ ErlNifEnv* msg_env);
+static char* esock_send_msg(ErlNifEnv* env,
+ ERL_NIF_TERM msg,
+ ErlNifPid* pid,
+ ErlNifEnv* msg_env);
+
+static int esock_select_read(ErlNifEnv* env,
+ ErlNifEvent event,
+ void* obj,
+ const ErlNifPid* pid,
+ ERL_NIF_TERM ref);
+static int esock_select_write(ErlNifEnv* env,
+ ErlNifEvent event,
+ void* obj,
+ const ErlNifPid* pid,
+ ERL_NIF_TERM ref);
+static int esock_select_stop(ErlNifEnv* env,
+ ErlNifEvent event,
+ void* obj);
+static int esock_select_cancel(ErlNifEnv* env,
+ ErlNifEvent event,
+ enum ErlNifSelectFlags mode,
+ void* obj);
+
+static BOOLEAN_T extract_debug(ErlNifEnv* env,
+ ERL_NIF_TERM map);
+static BOOLEAN_T extract_iow(ErlNifEnv* env,
+ ERL_NIF_TERM map);
+
+static int on_load(ErlNifEnv* env, void** priv_data, ERL_NIF_TERM load_info);
+
+
+
+#if HAVE_IN6
+# if ! defined(HAVE_IN6ADDR_ANY) || ! HAVE_IN6ADDR_ANY
+# if HAVE_DECL_IN6ADDR_ANY_INIT
+static const struct in6_addr in6addr_any = { { IN6ADDR_ANY_INIT } };
+# else
+static const struct in6_addr in6addr_any =
+ { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 } } };
+# endif /* HAVE_IN6ADDR_ANY_INIT */
+# endif /* ! HAVE_DECL_IN6ADDR_ANY */
+
+# if ! defined(HAVE_IN6ADDR_LOOPBACK) || ! HAVE_IN6ADDR_LOOPBACK
+# if HAVE_DECL_IN6ADDR_LOOPBACK_INIT
+static const struct in6_addr in6addr_loopback =
+ { { IN6ADDR_LOOPBACK_INIT } };
+# else
+static const struct in6_addr in6addr_loopback =
+ { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 } } };
+# endif /* HAVE_IN6ADDR_LOOPBACk_INIT */
+# endif /* ! HAVE_DECL_IN6ADDR_LOOPBACK */
+#endif /* HAVE_IN6 */
+
+
+
+/* *** String constants *** */
+static char str_adaptation_layer[] = "adaptation_layer";
+static char str_address[] = "address";
+static char str_association[] = "association";
+static char str_assoc_id[] = "assoc_id";
+static char str_authentication[] = "authentication";
+// static char str_any[] = "any";
+static char str_bool[] = "bool";
+static char str_close[] = "close";
+static char str_closed[] = "closed";
+static char str_closing[] = "closing";
+static char str_cookie_life[] = "cookie_life";
+static char str_data_in[] = "data_in";
+static char str_do[] = "do";
+static char str_dont[] = "dont";
+static char str_exclude[] = "exclude";
+static char str_false[] = "false";
+static char str_global_counters[] = "global_counters";
+static char str_in4_sockaddr[] = "in4_sockaddr";
+static char str_in6_sockaddr[] = "in6_sockaddr";
+static char str_include[] = "include";
+static char str_initial[] = "initial";
+static char str_int[] = "int";
+static char str_interface[] = "interface";
+static char str_iow[] = "iow";
+static char str_local_rwnd[] = "local_rwnd";
+// static char str_loopback[] = "loopback";
+static char str_max[] = "max";
+static char str_max_attempts[] = "max_attempts";
+static char str_max_init_timeo[] = "max_init_timeo";
+static char str_max_instreams[] = "max_instreams";
+static char str_max_rxt[] = "max_rxt";
+static char str_min[] = "min";
+static char str_mode[] = "mode";
+static char str_multiaddr[] = "multiaddr";
+// static char str_nif_abort[] = "nif_abort";
+static char str_null[] = "null";
+static char str_num_dlocal[] = "num_domain_local";
+static char str_num_dinet[] = "num_domain_inet";
+static char str_num_dinet6[] = "num_domain_inet6";
+static char str_num_outstreams[] = "num_outstreams";
+static char str_num_peer_dests[] = "num_peer_dests";
+static char str_num_pip[] = "num_proto_ip";
+static char str_num_psctp[] = "num_proto_sctp";
+static char str_num_ptcp[] = "num_proto_tcp";
+static char str_num_pudp[] = "num_proto_udp";
+static char str_num_sockets[] = "num_sockets";
+static char str_num_tdgrams[] = "num_type_dgram";
+static char str_num_tseqpkgs[] = "num_type_seqpacket";
+static char str_num_tstreams[] = "num_type_stream";
+static char str_partial_delivery[] = "partial_delivery";
+static char str_peer_error[] = "peer_error";
+static char str_peer_rwnd[] = "peer_rwnd";
+static char str_probe[] = "probe";
+static char str_select[] = "select";
+static char str_sender_dry[] = "sender_dry";
+static char str_send_failure[] = "send_failure";
+static char str_shutdown[] = "shutdown";
+static char str_slist[] = "slist";
+static char str_sourceaddr[] = "sourceaddr";
+static char str_timeout[] = "timeout";
+static char str_true[] = "true";
+static char str_want[] = "want";
+
+/* (special) error string constants */
+static char str_eisconn[] = "eisconn";
+static char str_enotclosing[] = "enotclosing";
+static char str_enotconn[] = "enotconn";
+static char str_exalloc[] = "exalloc";
+static char str_exbadstate[] = "exbadstate";
+static char str_exbusy[] = "exbusy";
+static char str_exmon[] = "exmonitor"; // failed monitor
+static char str_exself[] = "exself"; // failed self
+static char str_exsend[] = "exsend"; // failed send
+
+
+/* *** "Global" Atoms *** */
+ERL_NIF_TERM esock_atom_abort;
+ERL_NIF_TERM esock_atom_accept;
+ERL_NIF_TERM esock_atom_acceptconn;
+ERL_NIF_TERM esock_atom_acceptfilter;
+ERL_NIF_TERM esock_atom_adaption_layer;
+ERL_NIF_TERM esock_atom_addr;
+ERL_NIF_TERM esock_atom_addrform;
+ERL_NIF_TERM esock_atom_add_membership;
+ERL_NIF_TERM esock_atom_add_source_membership;
+ERL_NIF_TERM esock_atom_any;
+ERL_NIF_TERM esock_atom_associnfo;
+ERL_NIF_TERM esock_atom_authhdr;
+ERL_NIF_TERM esock_atom_auth_active_key;
+ERL_NIF_TERM esock_atom_auth_asconf;
+ERL_NIF_TERM esock_atom_auth_chunk;
+ERL_NIF_TERM esock_atom_auth_delete_key;
+ERL_NIF_TERM esock_atom_auth_key;
+ERL_NIF_TERM esock_atom_auth_level;
+ERL_NIF_TERM esock_atom_autoclose;
+ERL_NIF_TERM esock_atom_bindtodevice;
+ERL_NIF_TERM esock_atom_block_source;
+ERL_NIF_TERM esock_atom_broadcast;
+ERL_NIF_TERM esock_atom_busy_poll;
+ERL_NIF_TERM esock_atom_checksum;
+ERL_NIF_TERM esock_atom_close;
+ERL_NIF_TERM esock_atom_connect;
+ERL_NIF_TERM esock_atom_congestion;
+ERL_NIF_TERM esock_atom_context;
+ERL_NIF_TERM esock_atom_cork;
+ERL_NIF_TERM esock_atom_credentials;
+ERL_NIF_TERM esock_atom_ctrl;
+ERL_NIF_TERM esock_atom_ctrunc;
+ERL_NIF_TERM esock_atom_data;
+ERL_NIF_TERM esock_atom_debug;
+ERL_NIF_TERM esock_atom_default_send_params;
+ERL_NIF_TERM esock_atom_delayed_ack_time;
+ERL_NIF_TERM esock_atom_dgram;
+ERL_NIF_TERM esock_atom_disable_fragments;
+ERL_NIF_TERM esock_atom_domain;
+ERL_NIF_TERM esock_atom_dontfrag;
+ERL_NIF_TERM esock_atom_dontroute;
+ERL_NIF_TERM esock_atom_drop_membership;
+ERL_NIF_TERM esock_atom_drop_source_membership;
+ERL_NIF_TERM esock_atom_dstopts;
+ERL_NIF_TERM esock_atom_eor;
+ERL_NIF_TERM esock_atom_error;
+ERL_NIF_TERM esock_atom_errqueue;
+ERL_NIF_TERM esock_atom_esp_network_level;
+ERL_NIF_TERM esock_atom_esp_trans_level;
+ERL_NIF_TERM esock_atom_events;
+ERL_NIF_TERM esock_atom_explicit_eor;
+ERL_NIF_TERM esock_atom_faith;
+ERL_NIF_TERM esock_atom_false;
+ERL_NIF_TERM esock_atom_family;
+ERL_NIF_TERM esock_atom_flags;
+ERL_NIF_TERM esock_atom_flowinfo;
+ERL_NIF_TERM esock_atom_fragment_interleave;
+ERL_NIF_TERM esock_atom_freebind;
+ERL_NIF_TERM esock_atom_get_peer_addr_info;
+ERL_NIF_TERM esock_atom_hdrincl;
+ERL_NIF_TERM esock_atom_hmac_ident;
+ERL_NIF_TERM esock_atom_hoplimit;
+ERL_NIF_TERM esock_atom_hopopts;
+ERL_NIF_TERM esock_atom_ifindex;
+ERL_NIF_TERM esock_atom_inet;
+ERL_NIF_TERM esock_atom_inet6;
+ERL_NIF_TERM esock_atom_info;
+ERL_NIF_TERM esock_atom_initmsg;
+ERL_NIF_TERM esock_atom_iov;
+ERL_NIF_TERM esock_atom_ip;
+ERL_NIF_TERM esock_atom_ipcomp_level;
+ERL_NIF_TERM esock_atom_ipv6;
+ERL_NIF_TERM esock_atom_i_want_mapped_v4_addr;
+ERL_NIF_TERM esock_atom_join_group;
+ERL_NIF_TERM esock_atom_keepalive;
+ERL_NIF_TERM esock_atom_keepcnt;
+ERL_NIF_TERM esock_atom_keepidle;
+ERL_NIF_TERM esock_atom_keepintvl;
+ERL_NIF_TERM esock_atom_leave_group;
+ERL_NIF_TERM esock_atom_level;
+ERL_NIF_TERM esock_atom_linger;
+ERL_NIF_TERM esock_atom_local;
+ERL_NIF_TERM esock_atom_local_auth_chunks;
+ERL_NIF_TERM esock_atom_loopback;
+ERL_NIF_TERM esock_atom_lowdelay;
+ERL_NIF_TERM esock_atom_mark;
+ERL_NIF_TERM esock_atom_maxburst;
+ERL_NIF_TERM esock_atom_maxseg;
+ERL_NIF_TERM esock_atom_md5sig;
+ERL_NIF_TERM esock_atom_mincost;
+ERL_NIF_TERM esock_atom_minttl;
+ERL_NIF_TERM esock_atom_msfilter;
+ERL_NIF_TERM esock_atom_mtu;
+ERL_NIF_TERM esock_atom_mtu_discover;
+ERL_NIF_TERM esock_atom_multicast_all;
+ERL_NIF_TERM esock_atom_multicast_hops;
+ERL_NIF_TERM esock_atom_multicast_if;
+ERL_NIF_TERM esock_atom_multicast_loop;
+ERL_NIF_TERM esock_atom_multicast_ttl;
+ERL_NIF_TERM esock_atom_nodelay;
+ERL_NIF_TERM esock_atom_nodefrag;
+ERL_NIF_TERM esock_atom_noopt;
+ERL_NIF_TERM esock_atom_nopush;
+ERL_NIF_TERM esock_atom_not_found;
+ERL_NIF_TERM esock_atom_not_owner;
+ERL_NIF_TERM esock_atom_ok;
+ERL_NIF_TERM esock_atom_oob;
+ERL_NIF_TERM esock_atom_oobinline;
+ERL_NIF_TERM esock_atom_options;
+ERL_NIF_TERM esock_atom_origdstaddr;
+ERL_NIF_TERM esock_atom_partial_delivery_point;
+ERL_NIF_TERM esock_atom_passcred;
+ERL_NIF_TERM esock_atom_path;
+ERL_NIF_TERM esock_atom_peekcred;
+ERL_NIF_TERM esock_atom_peek_off;
+ERL_NIF_TERM esock_atom_peer_addr_params;
+ERL_NIF_TERM esock_atom_peer_auth_chunks;
+ERL_NIF_TERM esock_atom_pktinfo;
+ERL_NIF_TERM esock_atom_pktoptions;
+ERL_NIF_TERM esock_atom_port;
+ERL_NIF_TERM esock_atom_portrange;
+ERL_NIF_TERM esock_atom_primary_addr;
+ERL_NIF_TERM esock_atom_priority;
+ERL_NIF_TERM esock_atom_protocol;
+ERL_NIF_TERM esock_atom_raw;
+ERL_NIF_TERM esock_atom_rcvbuf;
+ERL_NIF_TERM esock_atom_rcvbufforce;
+ERL_NIF_TERM esock_atom_rcvlowat;
+ERL_NIF_TERM esock_atom_rcvtimeo;
+ERL_NIF_TERM esock_atom_rdm;
+ERL_NIF_TERM esock_atom_recv;
+ERL_NIF_TERM esock_atom_recvdstaddr;
+ERL_NIF_TERM esock_atom_recverr;
+ERL_NIF_TERM esock_atom_recvfrom;
+ERL_NIF_TERM esock_atom_recvif;
+ERL_NIF_TERM esock_atom_recvmsg;
+ERL_NIF_TERM esock_atom_recvopts;
+ERL_NIF_TERM esock_atom_recvorigdstaddr;
+ERL_NIF_TERM esock_atom_recvpktinfo;
+ERL_NIF_TERM esock_atom_recvtclass;
+ERL_NIF_TERM esock_atom_recvtos;
+ERL_NIF_TERM esock_atom_recvttl;
+ERL_NIF_TERM esock_atom_reliability;
+ERL_NIF_TERM esock_atom_reset_streams;
+ERL_NIF_TERM esock_atom_retopts;
+ERL_NIF_TERM esock_atom_reuseaddr;
+ERL_NIF_TERM esock_atom_reuseport;
+ERL_NIF_TERM esock_atom_rights;
+ERL_NIF_TERM esock_atom_router_alert;
+ERL_NIF_TERM esock_atom_rthdr;
+ERL_NIF_TERM esock_atom_rtoinfo;
+ERL_NIF_TERM esock_atom_rxq_ovfl;
+ERL_NIF_TERM esock_atom_scope_id;
+ERL_NIF_TERM esock_atom_sctp;
+ERL_NIF_TERM esock_atom_sec;
+ERL_NIF_TERM esock_atom_select_failed;
+ERL_NIF_TERM esock_atom_select_sent;
+ERL_NIF_TERM esock_atom_send;
+ERL_NIF_TERM esock_atom_sendmsg;
+ERL_NIF_TERM esock_atom_sendsrcaddr;
+ERL_NIF_TERM esock_atom_sendto;
+ERL_NIF_TERM esock_atom_seqpacket;
+ERL_NIF_TERM esock_atom_setfib;
+ERL_NIF_TERM esock_atom_set_peer_primary_addr;
+ERL_NIF_TERM esock_atom_socket;
+ERL_NIF_TERM esock_atom_socket_tag;
+ERL_NIF_TERM esock_atom_sndbuf;
+ERL_NIF_TERM esock_atom_sndbufforce;
+ERL_NIF_TERM esock_atom_sndlowat;
+ERL_NIF_TERM esock_atom_sndtimeo;
+ERL_NIF_TERM esock_atom_spec_dst;
+ERL_NIF_TERM esock_atom_status;
+ERL_NIF_TERM esock_atom_stream;
+ERL_NIF_TERM esock_atom_syncnt;
+ERL_NIF_TERM esock_atom_tclass;
+ERL_NIF_TERM esock_atom_tcp;
+ERL_NIF_TERM esock_atom_throughput;
+ERL_NIF_TERM esock_atom_timestamp;
+ERL_NIF_TERM esock_atom_tos;
+ERL_NIF_TERM esock_atom_transparent;
+ERL_NIF_TERM esock_atom_true;
+ERL_NIF_TERM esock_atom_trunc;
+ERL_NIF_TERM esock_atom_ttl;
+ERL_NIF_TERM esock_atom_type;
+ERL_NIF_TERM esock_atom_udp;
+ERL_NIF_TERM esock_atom_unblock_source;
+ERL_NIF_TERM esock_atom_undefined;
+ERL_NIF_TERM esock_atom_unicast_hops;
+ERL_NIF_TERM esock_atom_unknown;
+ERL_NIF_TERM esock_atom_usec;
+ERL_NIF_TERM esock_atom_user_timeout;
+ERL_NIF_TERM esock_atom_use_ext_recvinfo;
+ERL_NIF_TERM esock_atom_use_min_mtu;
+ERL_NIF_TERM esock_atom_v6only;
+
+/* *** "Global" error (=reason) atoms *** */
+ERL_NIF_TERM esock_atom_eagain;
+ERL_NIF_TERM esock_atom_eafnosupport;
+ERL_NIF_TERM esock_atom_einval;
+
+/* *** Atoms *** */
+static ERL_NIF_TERM atom_adaptation_layer;
+static ERL_NIF_TERM atom_address;
+static ERL_NIF_TERM atom_association;
+static ERL_NIF_TERM atom_assoc_id;
+static ERL_NIF_TERM atom_authentication;
+static ERL_NIF_TERM atom_bool;
+static ERL_NIF_TERM atom_close;
+static ERL_NIF_TERM atom_closed;
+static ERL_NIF_TERM atom_closing;
+static ERL_NIF_TERM atom_cookie_life;
+static ERL_NIF_TERM atom_data_in;
+static ERL_NIF_TERM atom_do;
+static ERL_NIF_TERM atom_dont;
+static ERL_NIF_TERM atom_exclude;
+static ERL_NIF_TERM atom_false;
+static ERL_NIF_TERM atom_global_counters;
+static ERL_NIF_TERM atom_in4_sockaddr;
+static ERL_NIF_TERM atom_in6_sockaddr;
+static ERL_NIF_TERM atom_include;
+static ERL_NIF_TERM atom_initial;
+static ERL_NIF_TERM atom_int;
+static ERL_NIF_TERM atom_interface;
+static ERL_NIF_TERM atom_iow;
+static ERL_NIF_TERM atom_local_rwnd;
+static ERL_NIF_TERM atom_max;
+static ERL_NIF_TERM atom_max_attempts;
+static ERL_NIF_TERM atom_max_init_timeo;
+static ERL_NIF_TERM atom_max_instreams;
+static ERL_NIF_TERM atom_max_rxt;
+static ERL_NIF_TERM atom_min;
+static ERL_NIF_TERM atom_mode;
+static ERL_NIF_TERM atom_multiaddr;
+// static ERL_NIF_TERM atom_nif_abort;
+static ERL_NIF_TERM atom_null;
+static ERL_NIF_TERM atom_num_dinet;
+static ERL_NIF_TERM atom_num_dinet6;
+static ERL_NIF_TERM atom_num_dlocal;
+static ERL_NIF_TERM atom_num_outstreams;
+static ERL_NIF_TERM atom_num_peer_dests;
+static ERL_NIF_TERM atom_num_pip;
+static ERL_NIF_TERM atom_num_psctp;
+static ERL_NIF_TERM atom_num_ptcp;
+static ERL_NIF_TERM atom_num_pudp;
+static ERL_NIF_TERM atom_num_sockets;
+static ERL_NIF_TERM atom_num_tdgrams;
+static ERL_NIF_TERM atom_num_tseqpkgs;
+static ERL_NIF_TERM atom_num_tstreams;
+static ERL_NIF_TERM atom_partial_delivery;
+static ERL_NIF_TERM atom_peer_error;
+static ERL_NIF_TERM atom_peer_rwnd;
+static ERL_NIF_TERM atom_probe;
+static ERL_NIF_TERM atom_select;
+static ERL_NIF_TERM atom_sender_dry;
+static ERL_NIF_TERM atom_send_failure;
+static ERL_NIF_TERM atom_shutdown;
+static ERL_NIF_TERM atom_slist;
+static ERL_NIF_TERM atom_sourceaddr;
+static ERL_NIF_TERM atom_timeout;
+static ERL_NIF_TERM atom_true;
+static ERL_NIF_TERM atom_want;
+
+static ERL_NIF_TERM atom_eisconn;
+static ERL_NIF_TERM atom_enotclosing;
+static ERL_NIF_TERM atom_enotconn;
+static ERL_NIF_TERM atom_exalloc;
+static ERL_NIF_TERM atom_exbadstate;
+static ERL_NIF_TERM atom_exbusy;
+static ERL_NIF_TERM atom_exmon;
+static ERL_NIF_TERM atom_exself;
+static ERL_NIF_TERM atom_exsend;
+
+
+/* *** Sockets *** */
+static ErlNifResourceType* sockets;
+static ErlNifResourceTypeInit socketInit = {
+ socket_dtor,
+ socket_stop,
+ (ErlNifResourceDown*) socket_down
+};
+
+// Initiated when the nif is loaded
+static SocketData data;
+
+
+/* ----------------------------------------------------------------------
+ * N I F F u n c t i o n s
+ * ----------------------------------------------------------------------
+ *
+ * Utility and admin functions:
+ * ----------------------------
+ * nif_info/0
+ * nif_supports/1
+ * (nif_debug/1)
+ *
+ * The "proper" socket functions:
+ * ------------------------------
+ * nif_open(Domain, Type, Protocol, Extra)
+ * nif_bind(Sock, LocalAddr)
+ * nif_connect(Sock, SockAddr)
+ * nif_listen(Sock, Backlog)
+ * nif_accept(LSock, Ref)
+ * nif_send(Sock, SendRef, Data, Flags)
+ * nif_sendto(Sock, SendRef, Data, Dest, Flags)
+ * nif_sendmsg(Sock, SendRef, MsgHdr, Flags)
+ * nif_recv(Sock, RecvRef, Length, Flags)
+ * nif_recvfrom(Sock, RecvRef, BufSz, Flags)
+ * nif_recvmsg(Sock, RecvRef, BufSz, CtrlSz, Flags)
+ * nif_close(Sock)
+ * nif_shutdown(Sock, How)
+ * nif_sockname(Sock)
+ * nif_peername(Sock)
+ *
+ * And some functions to manipulate and retrieve socket options:
+ * -------------------------------------------------------------
+ * nif_setopt/5
+ * nif_getopt/4
+ *
+ * And some utility functions:
+ * -------------------------------------------------------------
+ *
+ * And some socket admin functions:
+ * -------------------------------------------------------------
+ * nif_cancel(Sock, Ref)
+ */
+
+
+/* ----------------------------------------------------------------------
+ * nif_info
+ *
+ * Description:
+ * This is currently just a placeholder...
+ */
+#define MKCT(E, T, C) MKT2((E), (T), MKI((E), (C)))
+
+static
+ERL_NIF_TERM nif_info(ErlNifEnv* env,
+ int argc,
+ const ERL_NIF_TERM argv[])
+{
+#if defined(__WIN32__)
+ return enif_raise_exception(env, MKA(env, "notsup"));
+#else
+ if (argc != 0) {
+ return enif_make_badarg(env);
+ } else {
+ ERL_NIF_TERM numSockets = MKCT(env, atom_num_sockets, data.numSockets);
+ ERL_NIF_TERM numTypeDGrams = MKCT(env, atom_num_tdgrams, data.numTypeDGrams);
+ ERL_NIF_TERM numTypeStreams = MKCT(env, atom_num_tstreams, data.numTypeStreams);
+ ERL_NIF_TERM numTypeSeqPkgs = MKCT(env, atom_num_tseqpkgs, data.numTypeSeqPkgs);
+ ERL_NIF_TERM numDomLocal = MKCT(env, atom_num_dlocal, data.numDomainLocal);
+ ERL_NIF_TERM numDomInet = MKCT(env, atom_num_dinet, data.numDomainInet);
+ ERL_NIF_TERM numDomInet6 = MKCT(env, atom_num_dinet6, data.numDomainInet6);
+ ERL_NIF_TERM numProtoIP = MKCT(env, atom_num_pip, data.numProtoIP);
+ ERL_NIF_TERM numProtoTCP = MKCT(env, atom_num_ptcp, data.numProtoTCP);
+ ERL_NIF_TERM numProtoUDP = MKCT(env, atom_num_pudp, data.numProtoUDP);
+ ERL_NIF_TERM numProtoSCTP = MKCT(env, atom_num_psctp, data.numProtoSCTP);
+ ERL_NIF_TERM gcnt[] = {numSockets,
+ numTypeDGrams, numTypeStreams, numTypeSeqPkgs,
+ numDomLocal, numDomInet, numDomInet6,
+ numProtoIP, numProtoTCP, numProtoUDP, numProtoSCTP};
+ unsigned int lenGCnt = sizeof(gcnt) / sizeof(ERL_NIF_TERM);
+ ERL_NIF_TERM lgcnt = MKLA(env, gcnt, lenGCnt);
+ ERL_NIF_TERM keys[] = {esock_atom_debug, atom_iow, atom_global_counters};
+ ERL_NIF_TERM vals[] = {BOOL2ATOM(data.dbg), BOOL2ATOM(data.iow), lgcnt};
+ ERL_NIF_TERM info;
+ unsigned int numKeys = sizeof(keys) / sizeof(ERL_NIF_TERM);
+ unsigned int numVals = sizeof(vals) / sizeof(ERL_NIF_TERM);
+
+ ESOCK_ASSERT( (numKeys == numVals) );
+
+ if (!MKMA(env, keys, vals, numKeys, &info))
+ return enif_make_badarg(env);
+
+ return info;
+ }
+#endif
+}
+
+
+
+/* ----------------------------------------------------------------------
+ * nif_supports
+ *
+ * Description:
+ * This function is intended to answer the question: "Is X supported?"
+ * Currently only one key is "supported": options
+ * That results in a list of all *known options* (known by us) and if
+ * the platform supports (OS) it or not.
+ *
+ * Key
+ * ---
+ * options [{socket, [{Opt, boolean()}]},
+ * {ip, [{Opt, boolean()}]},
+ * {ipv6, [{Opt, boolean()}]},
+ * {tcp, [{Opt, boolean()}]},
+ * {udp, [{Opt, boolean()}]},
+ * {sctp, [{Opt, boolean()}]}]
+ */
+
+static
+ERL_NIF_TERM nif_supports(ErlNifEnv* env,
+ int argc,
+ const ERL_NIF_TERM argv[])
+{
+#if defined(__WIN32__)
+ return enif_raise_exception(env, MKA(env, "notsup"));
+#else
+ int key;
+
+ SGDBG( ("SOCKET", "nif_supports -> entry with %d args\r\n", argc) );
+
+ /* Extract arguments and perform preliminary validation */
+
+ if ((argc != 1) ||
+ !GET_INT(env, argv[0], &key)) {
+ return enif_make_badarg(env);
+ }
+
+ return nsupports(env, key);
+#endif
+}
+
+
+
+/* nopen - create an endpoint for communication
+ *
+ * Assumes the input has been validated.
+ *
+ * Normally we want debugging on (individual) sockets to be controlled
+ * by the sockets own debug flag. But since we don't even have a socket
+ * yet, we must use the global debug flag.
+ */
+#if !defined(__WIN32__)
+static
+ERL_NIF_TERM nsupports(ErlNifEnv* env, int key)
+{
+ ERL_NIF_TERM result;
+
+ SGDBG( ("SOCKET", "nsupports -> entry with 0x%lX\r\n", key) );
+
+ switch (key) {
+ case SOCKET_SUPPORTS_OPTIONS:
+ result = nsupports_options(env);
+ break;
+
+ case SOCKET_SUPPORTS_SCTP:
+ result = nsupports_sctp(env);
+ break;
+
+ case SOCKET_SUPPORTS_IPV6:
+ result = nsupports_ipv6(env);
+ break;
+
+ default:
+ result = esock_atom_false;
+ break;
+ }
+
+ return result;
+}
+#endif
+
+
+#if !defined(__WIN32__)
+static
+ERL_NIF_TERM nsupports_options(ErlNifEnv* env)
+{
+ ERL_NIF_TERM sockOpts = nsupports_options_socket(env);
+ ERL_NIF_TERM sockOptsT = MKT2(env, esock_atom_socket, sockOpts);
+ ERL_NIF_TERM ipOpts = nsupports_options_ip(env);
+ ERL_NIF_TERM ipOptsT = MKT2(env, esock_atom_ip, ipOpts);
+ ERL_NIF_TERM ipv6Opts = nsupports_options_ipv6(env);
+ ERL_NIF_TERM ipv6OptsT = MKT2(env, esock_atom_ipv6, ipv6Opts);
+ ERL_NIF_TERM tcpOpts = nsupports_options_tcp(env);
+ ERL_NIF_TERM tcpOptsT = MKT2(env, esock_atom_tcp, tcpOpts);
+ ERL_NIF_TERM udpOpts = nsupports_options_udp(env);
+ ERL_NIF_TERM udpOptsT = MKT2(env, esock_atom_udp, udpOpts);
+ ERL_NIF_TERM sctpOpts = nsupports_options_sctp(env);
+ ERL_NIF_TERM sctpOptsT = MKT2(env, esock_atom_sctp, sctpOpts);
+ ERL_NIF_TERM optsA[] = {sockOptsT,
+ ipOptsT, ipv6OptsT,
+ tcpOptsT, udpOptsT, sctpOptsT};
+ unsigned int lenOptsA = sizeof(optsA) / sizeof(ERL_NIF_TERM);
+ ERL_NIF_TERM optsL = MKLA(env, optsA, lenOptsA);
+
+ return optsL;
+}
+#endif
+
+
+
+#if !defined(__WIN32__)
+static
+ERL_NIF_TERM nsupports_options_socket(ErlNifEnv* env)
+{
+ SocketTArray opts = TARRAY_CREATE(128);
+ ERL_NIF_TERM tmp, optsL;
+
+
+ /* *** SOCKET_OPT_SOCK_ACCEPTCONN => SO_ACCEPTCONN *** */
+#if defined(SO_ACCEPTCONN)
+ tmp = MKT2(env, esock_atom_acceptconn, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_acceptconn, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_SOCK_ACCEPTFILTER => SO_ACCEPTFILTER *** */
+ tmp = MKT2(env, esock_atom_acceptfilter, esock_atom_false);
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_SOCK_BINDTODEVICE => SO_BINDTODEVICE *** */
+#if defined(SO_BINDTODEVICE)
+ tmp = MKT2(env, esock_atom_bindtodevice, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_bindtodevice, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_SOCK_BROADCAST => SO_BROADCAST *** */
+#if defined(SO_BROADCAST)
+ tmp = MKT2(env, esock_atom_broadcast, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_broadcast, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_SOCK_BUSY_POLL => SO_BUSY_POLL *** */
+ tmp = MKT2(env, esock_atom_busy_poll, esock_atom_false);
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_SOCK_DEBUG => SO_DEBUG *** */
+#if defined(SO_DEBUG)
+ tmp = MKT2(env, esock_atom_debug, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_debug, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_SOCK_DOMAIN => SO_DOMAIN *** */
+#if defined(SO_DOMAIN)
+ tmp = MKT2(env, esock_atom_domain, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_domain, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_SOCK_DONTROUTE => SO_DONTROUTE *** */
+#if defined(SO_DONTROUTE)
+ tmp = MKT2(env, esock_atom_dontroute, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_dontroute, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_SOCK_ERROR => SO_ERROR *** */
+ tmp = MKT2(env, esock_atom_error, esock_atom_false);
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_SOCK_KEEPALIVE => SO_KEEPALIVE *** */
+#if defined(SO_KEEPALIVE)
+ tmp = MKT2(env, esock_atom_keepalive, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_keepalive, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_SOCK_LINGER => SO_LINGER *** */
+#if defined(SO_LINGER)
+ tmp = MKT2(env, esock_atom_linger, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_linger, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_SOCK_MARK => SO_MARK *** */
+ tmp = MKT2(env, esock_atom_mark, esock_atom_false);
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_SOCK_OOBINLINE => SO_OOBINLINE *** */
+#if defined(SO_OOBINLINE)
+ tmp = MKT2(env, esock_atom_oobinline, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_oobinline, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_PASSCRED => SO_PASSCRED *** */
+ tmp = MKT2(env, esock_atom_passcred, esock_atom_false);
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_SOCK_PEEK_OFF => SO_PEEK_OFF *** */
+#if defined(SO_PEEK_OFF)
+ tmp = MKT2(env, esock_atom_peek_off, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_peek_off, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_SOCK_PEEKCRED => SO_PEEKCRED *** */
+ tmp = MKT2(env, esock_atom_peekcred, esock_atom_false);
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_SOCK_PRIORITY => SO_PRIORITY *** */
+#if defined(SO_PRIORITY)
+ tmp = MKT2(env, esock_atom_priority, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_priority, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_SOCK_PROTOCOL => SO_PROTOCOL *** */
+#if defined(SO_PROTOCOL)
+ tmp = MKT2(env, esock_atom_protocol, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_protocol, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_SOCK_RCVBUF => SO_RCVBUF *** */
+#if defined(SO_RCVBUF)
+ tmp = MKT2(env, esock_atom_rcvbuf, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_rcvbuf, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_SOCK_RCVBUFFORCE => SO_RCVBUFFORCE *** */
+ tmp = MKT2(env, esock_atom_rcvbufforce, esock_atom_false);
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_SOCK_RCVLOWAT => SO_RCVLOWAT *** */
+#if defined(SO_RCVLOWAT)
+ tmp = MKT2(env, esock_atom_rcvlowat, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_rcvlowat, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_SOCK_RCVTIMEO => SO_RCVTIMEO *** */
+#if defined(SO_RCVTIMEO)
+ tmp = MKT2(env, esock_atom_rcvtimeo, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_rcvtimeo, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_SOCK_REUSEADDR => SO_REUSEADDR *** */
+#if defined(SO_REUSEADDR)
+ tmp = MKT2(env, esock_atom_reuseaddr, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_reuseaddr, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_SOCK_REUSEPORT => SO_REUSEPORT *** */
+#if defined(SO_REUSEPORT)
+ tmp = MKT2(env, esock_atom_reuseport, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_reuseport, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_SOCK_RXQ_OVFL => SO_RXQ_OVFL *** */
+ tmp = MKT2(env, esock_atom_rxq_ovfl, esock_atom_false);
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_SOCK_SETFIB => SO_SETFIB *** */
+ tmp = MKT2(env, esock_atom_setfib, esock_atom_false);
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_SOCK_SNDBUF => SO_SNDBUF *** */
+#if defined(SO_SNDBUF)
+ tmp = MKT2(env, esock_atom_sndbuf, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_sndbuf, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_SOCK_SNDBUFFORCE => SO_SNDBUFFORCE *** */
+ tmp = MKT2(env, esock_atom_sndbufforce, esock_atom_false);
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_SOCK_SNDLOWAT => SO_SNDLOWAT *** */
+#if defined(SO_SNDLOWAT)
+ tmp = MKT2(env, esock_atom_sndlowat, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_sndlowat, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_SOCK_SNDTIMEO => SO_SNDTIMEO *** */
+#if defined(SO_SNDTIMEO)
+ tmp = MKT2(env, esock_atom_sndtimeo, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_sndtimeo, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_SOCK_TIMESTAMP => SO_TIMESTAMP *** */
+#if defined(SO_TIMESTAMP)
+ tmp = MKT2(env, esock_atom_timestamp, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_timestamp, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_SOCK_TYPE => SO_TYPE *** */
+#if defined(SO_TYPE)
+ tmp = MKT2(env, esock_atom_type, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_type, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ TARRAY_TOLIST(opts, env, &optsL);
+
+ return optsL;
+}
+#endif
+
+
+
+#if !defined(__WIN32__)
+static
+ERL_NIF_TERM nsupports_options_ip(ErlNifEnv* env)
+{
+ SocketTArray opts = TARRAY_CREATE(128);
+ ERL_NIF_TERM tmp, optsL;
+
+
+ /* *** SOCKET_OPT_IP_ADD_MEMBERSHIP => IP_ADD_MEMBERSHIP *** */
+#if defined(IP_ADD_MEMBERSHIP)
+ tmp = MKT2(env, esock_atom_add_membership, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_add_membership, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_IP_ADD_SOURCE_MEMBERSHIP => IP_ADD_SOURCE_MEMBERSHIP *** */
+#if defined(IP_ADD_SOURCE_MEMBERSHIP)
+ tmp = MKT2(env, esock_atom_add_source_membership, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_add_source_membership, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_IP_BLOCK_SOURCE => IP_BLOCK_SOURCE *** */
+#if defined(IP_BLOCK_SOURCE)
+ tmp = MKT2(env, esock_atom_block_source, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_block_source, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_IP_DONTFRAG => IP_DONTFRAG *** */
+ tmp = MKT2(env, esock_atom_dontfrag, esock_atom_false);
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_IP_DROP_MEMBERSHIP => IP_DROP_MEMBERSHIP *** */
+#if defined(IP_DROP_MEMBERSHIP)
+ tmp = MKT2(env, esock_atom_drop_membership, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_drop_membership, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_IP_DROP_SOURCE_MEMBERSHIP => IP_DROP_SOURCE_MEMBERSHIP *** */
+#if defined(IP_DROP_SOURCE_MEMBERSHIP)
+ tmp = MKT2(env, esock_atom_drop_source_membership, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_drop_source_membership, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_IP_FREEBIND => IP_FREEBIND *** */
+#if defined(IP_FREEBIND)
+ tmp = MKT2(env, esock_atom_freebind, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_freebind, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_IP_HDRINCL => IP_HDRINCL *** */
+#if defined(IP_HDRINCL)
+ tmp = MKT2(env, esock_atom_hdrincl, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_hdrincl, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_IP_MINTTL => IP_MINTTL *** */
+#if defined(IP_MINTTL)
+ tmp = MKT2(env, esock_atom_minttl, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_minttl, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_IP_MSFILTER => IP_MSFILTER / IP_MSFILTER_SIZE *** */
+#if defined(IP_MSFILTER) && defined(IP_MSFILTER_SIZE)
+ tmp = MKT2(env, esock_atom_msfilter, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_msfilter, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_IP_MTU => IP_MTU *** */
+ tmp = MKT2(env, esock_atom_mtu, esock_atom_false);
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_IP_MTU_DISCOVER => IP_MTU_DISCOVER *** */
+#if defined(IP_MTU_DISCOVER)
+ tmp = MKT2(env, esock_atom_mtu_discover, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_mtu_discover, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_IP_MULTICAST_ALL => IP_MULTICAST_ALL *** */
+#if defined(IP_MULTICAST_ALL)
+ tmp = MKT2(env, esock_atom_multicast_all, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_multicast_all, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_IP_MULTICAST_IF => IP_MULTICAST_IF *** */
+#if defined(IP_MULTICAST_IF)
+ tmp = MKT2(env, esock_atom_multicast_if, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_multicast_if, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_IP_MULTICAST_LOOP => IP_MULTICAST_LOOP *** */
+#if defined(IP_MULTICAST_LOOP)
+ tmp = MKT2(env, esock_atom_multicast_loop, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_multicast_loop, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_IP_MULTICAST_TTL => IP_MULTICAST_TTL *** */
+#if defined(IP_MULTICAST_TTL)
+ tmp = MKT2(env, esock_atom_multicast_ttl, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_multicast_ttl, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_IP_NODEFRAG => IP_NODEFRAG *** */
+#if defined(IP_NODEFRAG)
+ tmp = MKT2(env, esock_atom_nodefrag, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_nodefrag, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_IP_OPTIONS => IP_OPTIONS *** */
+ tmp = MKT2(env, esock_atom_options, esock_atom_false);
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_IP_PKTINFO => IP_PKTINFO *** */
+#if defined(IP_PKTINFO)
+ tmp = MKT2(env, esock_atom_pktinfo, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_pktinfo, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_IP_RECVDSTADDR => IP_RECVDSTADDR *** */
+#if defined(IP_RECVDSTADDR)
+ tmp = MKT2(env, esock_atom_recvdstaddr, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_recvdstaddr, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_IP_RECVERR => IP_RECVERR *** */
+#if defined(IP_RECVERR)
+ tmp = MKT2(env, esock_atom_recverr, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_recverr, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_IP_RECVIF => IP_RECVIF *** */
+#if defined(IP_RECVIF)
+ tmp = MKT2(env, esock_atom_recvif, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_recvif, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_IP_RECVOPTS => IP_RECVOPTS *** */
+#if defined(IP_RECVOPTS)
+ tmp = MKT2(env, esock_atom_recvopts, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_recvopts, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_IP_RECVORIGDSTADDR => IP_RECVORIGDSTADDR *** */
+#if defined(IP_RECVORIGDSTADDR)
+ tmp = MKT2(env, esock_atom_recvorigdstaddr, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_recvorigdstaddr, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_IP_RECVTOS => IP_RECVTOS *** */
+#if defined(IP_RECVTOS)
+ tmp = MKT2(env, esock_atom_recvtos, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_recvtos, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_IP_RECVTTL => IP_RECVTTL *** */
+#if defined(IP_RECVTTL)
+ tmp = MKT2(env, esock_atom_recvttl, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_recvttl, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_IP_RETOPTS => IP_RETOPTS *** */
+#if defined(IP_RETOPTS)
+ tmp = MKT2(env, esock_atom_retopts, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_retopts, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_IP_ROUTER_ALERT => IP_ROUTER_ALERT *** */
+#if defined(IP_ROUTER_ALERT)
+ tmp = MKT2(env, esock_atom_router_alert, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_router_alert, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_IP_SENDSRCADDR => IP_SENDSRCADDR *** */
+#if defined(IP_SENDSRCADDR)
+ tmp = MKT2(env, esock_atom_sendsrcaddr, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_sendsrcaddr, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_IP_TOS => IP_TOS *** */
+#if defined(IP_TOS)
+ tmp = MKT2(env, esock_atom_tos, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_tos, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_IP_TRANSPARENT => IP_TRANSPARENT *** */
+#if defined(IP_TRANSPARENT)
+ tmp = MKT2(env, esock_atom_transparent, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_transparent, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_IP_TTL => IP_TTL *** */
+#if defined(IP_TTL)
+ tmp = MKT2(env, esock_atom_ttl, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_ttl, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_IP_UNBLOCK_SOURCE => IP_UNBLOCK_SOURCE *** */
+#if defined(IP_UNBLOCK_SOURCE)
+ tmp = MKT2(env, esock_atom_unblock_source, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_unblock_source, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ TARRAY_TOLIST(opts, env, &optsL);
+
+ return optsL;
+}
+#endif
+
+
+
+#if !defined(__WIN32__)
+static
+ERL_NIF_TERM nsupports_options_ipv6(ErlNifEnv* env)
+{
+ SocketTArray opts = TARRAY_CREATE(128);
+ ERL_NIF_TERM tmp, optsL;
+
+
+ /* *** SOCKET_OPT_IPV6_ADDRFORM => IPV6_ADDRFORM *** */
+#if defined(IPV6_ADDRFORM)
+ tmp = MKT2(env, esock_atom_addrform, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_addrform, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_IPV6_ADD_MEMBERSHIP => IPV6_ADD_MEMBERSHIP *** */
+#if defined(IPV6_ADD_MEMBERSHIP)
+ tmp = MKT2(env, esock_atom_add_membership, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_add_membership, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_IPV6_AUTHHDR => IPV6_AUTHHDR *** */
+#if defined(IPV6_AUTHHDR)
+ tmp = MKT2(env, esock_atom_authhdr, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_authhdr, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_IPV6_AUTH_LEVEL => IPV6_AUTH_LEVEL *** */
+ tmp = MKT2(env, esock_atom_auth_level, esock_atom_false);
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_IPV6_CHECKSUM => IPV6_CHECKSUM *** */
+ tmp = MKT2(env, esock_atom_checksum, esock_atom_false);
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_IPV6_DROP_MEMBERSHIP => IPV6_DROP_MEMBERSHIP *** */
+#if defined(IPV6_DROP_MEMBERSHIP)
+ tmp = MKT2(env, esock_atom_drop_membership, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_drop_membership, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_IPV6_DSTOPTS => IPV6_DSTOPTS *** */
+#if defined(IPV6_DSTOPTS)
+ tmp = MKT2(env, esock_atom_dstopts, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_dstopts, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_IPV6_ESP_NETWORK_LEVEL => IPV6_ESP_NETWORK_LEVEL *** */
+ tmp = MKT2(env, esock_atom_esp_network_level, esock_atom_false);
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_IPV6_ESP_TRANS_LEVEL => IPV6_ESP_TRANS_LEVEL *** */
+ tmp = MKT2(env, esock_atom_esp_trans_level, esock_atom_false);
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_IPV6_FAITH => IPV6_FAITH *** */
+ tmp = MKT2(env, esock_atom_faith, esock_atom_false);
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_IPV6_FLOWINFO => IPV6_FLOWINFO *** */
+#if defined(IPV6_FLOWINFO)
+ tmp = MKT2(env, esock_atom_flowinfo, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_flowinfo, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_IPV6_HOPLIMIT => IPV6_HOPLIMIT *** */
+#if defined(IPV6_HOPLIMIT)
+ tmp = MKT2(env, esock_atom_hoplimit, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_hoplimit, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_IPV6_HOPOPTS => IPV6_HOPOPTS *** */
+#if defined(IPV6_HOPOPTS)
+ tmp = MKT2(env, esock_atom_hopopts, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_hopopts, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_IPV6_IPCOMP_LEVEL => IPV6_IPCOMP_LEVEL *** */
+ tmp = MKT2(env, esock_atom_ipcomp_level, esock_atom_false);
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_IPV6_JOIN_GROUP => IPV6_JOIN_GROUP *** */
+ tmp = MKT2(env, esock_atom_join_group, esock_atom_false);
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_IPV6_LEAVE_GROUP => IPV6_LEAVE_GROUP *** */
+ tmp = MKT2(env, esock_atom_leave_group, esock_atom_false);
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_IPV6_MTU => IPV6_MTU *** */
+#if defined(IPV6_MTU)
+ tmp = MKT2(env, esock_atom_mtu, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_mtu, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_IPV6_MTU_DISCOVER => IPV6_MTU_DISCOVER *** */
+#if defined(IPV6_MTU_DISCOVER)
+ tmp = MKT2(env, esock_atom_mtu_discover, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_mtu_discover, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_IPV6_MULTICAST_HOPS => IPV6_MULTICAST_HOPS *** */
+#if defined(IPV6_MULTICAST_HOPS)
+ tmp = MKT2(env, esock_atom_multicast_hops, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_multicast_hops, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_IPV6_MULTICAST_IF => IPV6_MULTICAST_IF *** */
+#if defined(IPV6_MULTICAST_IF)
+ tmp = MKT2(env, esock_atom_multicast_if, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_multicast_if, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_IPV6_MULTICAST_LOOP => IPV6_MULTICAST_LOOP *** */
+#if defined(IPV6_MULTICAST_LOOP)
+ tmp = MKT2(env, esock_atom_multicast_loop, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_multicast_loop, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_IPV6_PORTRANGE => IPV6_PORTRANGE *** */
+ tmp = MKT2(env, esock_atom_portrange, esock_atom_false);
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_IPV6_PKTOPTIONS => IPV6_PKTOPTIONS *** */
+ tmp = MKT2(env, esock_atom_pktoptions, esock_atom_false);
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_IPV6_RECVERR => IPV6_RECVERR *** */
+#if defined(IPV6_RECVERR)
+ tmp = MKT2(env, esock_atom_recverr, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_recverr, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_IPV6_RECVPKTINFO => IPV6_RECVPKTINFO *** */
+#if defined(IPV6_RECVPKTINFO)
+ tmp = MKT2(env, esock_atom_recvpktinfo, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_recvpktinfo, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_IPV6_RECVTCLASS => IPV6_RECVTCLASS *** */
+ tmp = MKT2(env, esock_atom_recvtclass, esock_atom_false);
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_IPV6_ROUTER_ALERT => IPV6_ROUTER_ALERT *** */
+#if defined(IPV6_ROUTER_ALERT)
+ tmp = MKT2(env, esock_atom_router_alert, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_router_alert, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_IPV6_RTHDR => IPV6_RTHDR *** */
+#if defined(IPV6_RTHDR)
+ tmp = MKT2(env, esock_atom_rthdr, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_rthdr, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_IPV6_TCLASS => IPV6_TCLASS *** */
+ tmp = MKT2(env, esock_atom_tclass, esock_atom_false);
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_IPV6_UNICAST_HOPS => IPV6_UNICAST_HOPS *** */
+#if defined(IPV6_UNICAST_HOPS)
+ tmp = MKT2(env, esock_atom_unicast_hops, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_unicast_hops, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_IPV6_USE_MIN_MTU => IPV6_USE_MIN_MTU *** */
+ tmp = MKT2(env, esock_atom_use_min_mtu, esock_atom_false);
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_IPV6_V6ONLY => IPV6_V6ONLY *** */
+#if defined(IPV6_V6ONLY)
+ tmp = MKT2(env, esock_atom_v6only, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_v6only, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ TARRAY_TOLIST(opts, env, &optsL);
+
+ return optsL;
+}
+#endif
+
+
+
+#if !defined(__WIN32__)
+static
+ERL_NIF_TERM nsupports_options_tcp(ErlNifEnv* env)
+{
+ SocketTArray opts = TARRAY_CREATE(32);
+ ERL_NIF_TERM tmp, optsL;
+
+
+ /* *** SOCKET_OPT_TCP_CONGESTION => TCP_CONGESTION *** */
+#if defined(TCP_CONGESTION)
+ tmp = MKT2(env, esock_atom_congestion, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_congestion, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_TCP_CORK => TCP_CORK *** */
+#if defined(TCP_CORK)
+ tmp = MKT2(env, esock_atom_cork, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_cork, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_TCP_INFO => TCP_INFO *** */
+ tmp = MKT2(env, esock_atom_info, esock_atom_false);
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_TCP_KEEPCNT => TCP_KEEPCNT *** */
+ tmp = MKT2(env, esock_atom_keepcnt, esock_atom_false);
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_TCP_KEEPIDLE => TCP_KEEPIDLE *** */
+ tmp = MKT2(env, esock_atom_keepidle, esock_atom_false);
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_TCP_KEEPINTVL => TCP_KEEPINTVL *** */
+ tmp = MKT2(env, esock_atom_keepintvl, esock_atom_false);
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_TCP_MAXSEG => TCP_MAXSEG *** */
+#if defined(TCP_)
+ tmp = MKT2(env, esock_atom_maxseg, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_maxseg, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_TCP_MD5SIG => TCP_MD5SIG *** */
+ tmp = MKT2(env, esock_atom_md5sig, esock_atom_false);
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_TCP_NODELAY => TCP_NODELAY *** */
+#if defined(TCP_)
+ tmp = MKT2(env, esock_atom_nodelay, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_nodelay, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_TCP_NOOPT => TCP_NOOPT *** */
+ tmp = MKT2(env, esock_atom_noopt, esock_atom_false);
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_TCP_NOPUSH => TCP_NOPUSH *** */
+ tmp = MKT2(env, esock_atom_nopush, esock_atom_false);
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_TCP_SYNCNT => TCP_SYNCNT *** */
+ tmp = MKT2(env, esock_atom_syncnt, esock_atom_false);
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_TCP_USER_TIMEOUT => TCP_USER_TIMEOUT *** */
+ tmp = MKT2(env, esock_atom_user_timeout, esock_atom_false);
+ TARRAY_ADD(opts, tmp);
+
+
+ TARRAY_TOLIST(opts, env, &optsL);
+
+ return optsL;
+}
+#endif
+
+
+
+#if !defined(__WIN32__)
+static
+ERL_NIF_TERM nsupports_options_udp(ErlNifEnv* env)
+{
+ SocketTArray opts = TARRAY_CREATE(8);
+ ERL_NIF_TERM tmp, optsL;
+
+
+ /* *** SOCKET_OPT_UDP_CORK => UDP_CORK *** */
+#if defined(UDP_CORK)
+ tmp = MKT2(env, esock_atom_cork, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_cork, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ TARRAY_TOLIST(opts, env, &optsL);
+
+ return optsL;
+}
+#endif
+
+
+
+#if !defined(__WIN32__)
+static
+ERL_NIF_TERM nsupports_options_sctp(ErlNifEnv* env)
+{
+ SocketTArray opts = TARRAY_CREATE(64);
+ ERL_NIF_TERM tmp, optsL;
+
+
+ /* *** SOCKET_OPT_SCTP_ADAPTION_LAYER => SCTP_ADAPTION_LAYER *** */
+ tmp = MKT2(env, esock_atom_adaption_layer, esock_atom_false);
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_SCTP_ASSOCINFO => SCTP_ASSOCINFO *** */
+#if defined(SCTP_ASSOCINFO)
+ tmp = MKT2(env, esock_atom_associnfo, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_associnfo, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_SCTP_AUTH_ACTIVE_KEY => SCTP_AUTH_ACTIVE_KEY *** */
+ tmp = MKT2(env, esock_atom_auth_active_key, esock_atom_false);
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_SCTP_AUTH_ASCONF => SCTP_AUTH_ASCONF *** */
+ tmp = MKT2(env, esock_atom_auth_asconf, esock_atom_false);
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_SCTP_AUTH_CHUNK => SCTP_AUTH_CHUNK *** */
+ tmp = MKT2(env, esock_atom_auth_chunk, esock_atom_false);
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_SCTP_AUTH_DELETE_KEY => SCTP_AUTH_DELETE_KEY *** */
+ tmp = MKT2(env, esock_atom_auth_delete_key, esock_atom_false);
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_SCTP_AUTH_KEY => SCTP_AUTH_KEY *** */
+ tmp = MKT2(env, esock_atom_auth_key, esock_atom_false);
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_SCTP_AUTOCLOSE => SCTP_AUTOCLOSE *** */
+#if defined(SCTP_AUTOCLOSE)
+ tmp = MKT2(env, esock_atom_autoclose, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_autoclose, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_SCTP_CONTEXT => SCTP_CONTEXT *** */
+ tmp = MKT2(env, esock_atom_context, esock_atom_false);
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_SCTP_DEFAULT_SEND_PARAMS => SCTP_DEFAULT_SEND_PARAMS *** */
+ tmp = MKT2(env, esock_atom_default_send_params, esock_atom_false);
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_SCTP_DELAYED_ACK_TIME => SCTP_DELAYED_ACK_TIME *** */
+ tmp = MKT2(env, esock_atom_delayed_ack_time, esock_atom_false);
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_SCTP_DISABLE_FRAGMENTS => SCTP_DISABLE_FRAGMENTS *** */
+#if defined(SCTP_DISABLE_FRAGMENTS)
+ tmp = MKT2(env, esock_atom_disable_fragments, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_disable_fragments, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_SCTP_HMAC_IDENT => SCTP_HMAC_IDENT *** */
+ tmp = MKT2(env, esock_atom_hmac_ident, esock_atom_false);
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_SCTP_EVENTS => SCTP_EVENTS *** */
+#if defined(SCTP_EVENTS)
+ tmp = MKT2(env, esock_atom_events, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_events, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_SCTP_EXPLICIT_EOR => SCTP_EXPLICIT_EOR *** */
+ tmp = MKT2(env, esock_atom_explicit_eor, esock_atom_false);
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_SCTP_FRAGMENT_INTERLEAVE => SCTP_FRAGMENT_INTERLEAVE *** */
+ tmp = MKT2(env, esock_atom_fragment_interleave, esock_atom_false);
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_SCTP_GET_PEER_ADDR_INFO => SCTP_GET_PEER_ADDR_INFO *** */
+ tmp = MKT2(env, esock_atom_get_peer_addr_info, esock_atom_false);
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_SCTP_INITMSG => SCTP_INITMSG *** */
+#if defined(SCTP_INITMSG)
+ tmp = MKT2(env, esock_atom_initmsg, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_initmsg, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_SCTP_I_WANT_MAPPED_V4_ADDR => SCTP_I_WANT_MAPPED_V4_ADDR *** */
+ tmp = MKT2(env, esock_atom_i_want_mapped_v4_addr, esock_atom_false);
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_SCTP_LOCAL_AUTH_CHUNKS => SCTP_LOCAL_AUTH_CHUNKS *** */
+ tmp = MKT2(env, esock_atom_local_auth_chunks, esock_atom_false);
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_SCTP_MAXSEG => SCTP_MAXSEG *** */
+#if defined(SCTP_MAXSEG)
+ tmp = MKT2(env, esock_atom_maxseg, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_maxseg, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_SCTP_MAXBURST => SCTP_MAXBURST *** */
+ tmp = MKT2(env, esock_atom_maxburst, esock_atom_false);
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_SCTP_NODELAY => SCTP_NODELAY *** */
+#if defined(SCTP_NODELAY)
+ tmp = MKT2(env, esock_atom_nodelay, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_nodelay, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_SCTP_PARTIAL_DELIVERY_POINT => SCTP_PARTIAL_DELIVERY_POINT *** */
+ tmp = MKT2(env, esock_atom_partial_delivery_point, esock_atom_false);
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_SCTP_PEER_ADDR_PARAMS => SCTP_PEER_ADDR_PARAMS *** */
+ tmp = MKT2(env, esock_atom_peer_addr_params, esock_atom_false);
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_SCTP_PEER_AUTH_CHUNKS => SCTP_PEER_AUTH_CHUNKS *** */
+ tmp = MKT2(env, esock_atom_peer_auth_chunks, esock_atom_false);
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_SCTP_PRIMARY_ADDR => SCTP_PRIMARY_ADDR *** */
+ tmp = MKT2(env, esock_atom_primary_addr, esock_atom_false);
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_SCTP_RESET_STREAMS => SCTP_RESET_STREAMS *** */
+ tmp = MKT2(env, esock_atom_reset_streams, esock_atom_false);
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_SCTP_RTOINFO => SCTP_RTOINFO *** */
+#if defined(SCTP_RTOINFO)
+ tmp = MKT2(env, esock_atom_rtoinfo, esock_atom_true);
+#else
+ tmp = MKT2(env, esock_atom_rtoinfo, esock_atom_false);
+#endif
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_SCTP_SET_PEER_PRIMARY_ADDR => SCTP_SET_PEER_PRIMARY_ADDR *** */
+ tmp = MKT2(env, esock_atom_set_peer_primary_addr, esock_atom_false);
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_SCTP_STATUS => SCTP_STATUS *** */
+ tmp = MKT2(env, esock_atom_status, esock_atom_false);
+ TARRAY_ADD(opts, tmp);
+
+
+ /* *** SOCKET_OPT_SCTP_USE_EXT_RECVINFO => SCTP_USE_EXT_RECVINFO *** */
+ tmp = MKT2(env, esock_atom_use_ext_recvinfo, esock_atom_false);
+ TARRAY_ADD(opts, tmp);
+
+
+ TARRAY_TOLIST(opts, env, &optsL);
+
+ return optsL;
+}
+#endif
+
+
+
+#if !defined(__WIN32__)
+static
+ERL_NIF_TERM nsupports_sctp(ErlNifEnv* env)
+{
+ ERL_NIF_TERM supports;
+
+#if defined(HAVE_SCTP)
+ supports = esock_atom_true;
+#else
+ supports = esock_atom_false;
+#endif
+
+ return supports;
+}
+#endif
+
+
+
+#if !defined(__WIN32__)
+static
+ERL_NIF_TERM nsupports_ipv6(ErlNifEnv* env)
+{
+ ERL_NIF_TERM supports;
+
+ /* Is this (test) really sufficient for testing if we support IPv6? */
+#if defined(HAVE_IPV6)
+ supports = esock_atom_true;
+#else
+ supports = esock_atom_false;
+#endif
+
+ return supports;
+}
+#endif
+
+
+
+/* ----------------------------------------------------------------------
+ * nif_open
+ *
+ * Description:
+ * Create an endpoint for communication.
+ *
+ * Arguments:
+ * Domain - The domain, for example 'inet'
+ * Type - Type of socket, for example 'stream'
+ * Protocol - The protocol, for example 'tcp'
+ * Extra - A map with "obscure" options.
+ * Currently the only allowed option is netns (network namespace).
+ * This is *only* allowed on linux!
+ * We sould also use this for the fd value, in case we should use
+ * an already existing (file) descriptor.
+ */
+static
+ERL_NIF_TERM nif_open(ErlNifEnv* env,
+ int argc,
+ const ERL_NIF_TERM argv[])
+{
+#if defined(__WIN32__)
+ return enif_raise_exception(env, MKA(env, "notsup"));
+#else
+ int edomain, etype, eproto;
+ int domain, type, proto;
+ char* netns;
+ ERL_NIF_TERM emap;
+ ERL_NIF_TERM result;
+
+ SGDBG( ("SOCKET", "nif_open -> entry with %d args\r\n", argc) );
+
+ /* Extract arguments and perform preliminary validation */
+
+ if ((argc != 4) ||
+ !GET_INT(env, argv[0], &edomain) ||
+ !GET_INT(env, argv[1], &etype) ||
+ !IS_MAP(env, argv[3])) {
+ return enif_make_badarg(env);
+ }
+ eproto = argv[2];
+ emap = argv[3];
+
+ SGDBG( ("SOCKET", "nif_open -> "
+ "\r\n edomain: %T"
+ "\r\n etype: %T"
+ "\r\n eproto: %T"
+ "\r\n extra: %T"
+ "\r\n", argv[0], argv[1], eproto, emap) );
+
+ if (!edomain2domain(edomain, &domain)) {
+ SGDBG( ("SOCKET", "nif_open -> invalid domain: %d\r\n", edomain) );
+ return esock_make_error(env, esock_atom_einval);
+ }
+
+ if (!etype2type(etype, &type)) {
+ SGDBG( ("SOCKET", "nif_open -> invalid type: %d\r\n", etype) );
+ return esock_make_error(env, esock_atom_einval);
+ }
+
+ if (!eproto2proto(env, eproto, &proto)) {
+ SGDBG( ("SOCKET", "nif_open -> invalid protocol: %d\r\n", eproto) );
+ return esock_make_error(env, esock_atom_einval);
+ }
+
+#ifdef HAVE_SETNS
+ /* We *currently* only support one extra option: netns */
+ if (!emap2netns(env, emap, &netns)) {
+ SGDBG( ("SOCKET", "nif_open -> namespace: %s\r\n", netns) );
+ return enif_make_badarg(env);
+ }
+#else
+ netns = NULL;
+#endif
+
+
+ result = nopen(env, domain, type, proto, netns);
+
+ SGDBG( ("SOCKET", "nif_open -> done with result: "
+ "\r\n %T"
+ "\r\n", result) );
+
+ return result;
+
+#endif // if defined(__WIN32__)
+}
+
+
+/* nopen - create an endpoint for communication
+ *
+ * Assumes the input has been validated.
+ *
+ * Normally we want debugging on (individual) sockets to be controlled
+ * by the sockets own debug flag. But since we don't even have a socket
+ * yet, we must use the global debug flag.
+ */
+#if !defined(__WIN32__)
+static
+ERL_NIF_TERM nopen(ErlNifEnv* env,
+ int domain, int type, int protocol,
+ char* netns)
+{
+ SocketDescriptor* descP;
+ ERL_NIF_TERM res;
+ int save_errno = 0;
+ SOCKET sock;
+ HANDLE event;
+#ifdef HAVE_SETNS
+ int current_ns = 0;
+#endif
+
+ SGDBG( ("SOCKET", "nopen -> entry with"
+ "\r\n domain: %d"
+ "\r\n type: %d"
+ "\r\n protocol: %d"
+ "\r\n netns: %s"
+ "\r\n", domain, type, protocol, ((netns == NULL) ? "NULL" : netns)) );
+
+#ifdef HAVE_SETNS
+ if ((netns != NULL) &&
+ !change_network_namespace(netns, &current_ns, &save_errno))
+ return esock_make_error_errno(env, save_errno);
+#endif
+
+ if ((sock = sock_open(domain, type, protocol)) == INVALID_SOCKET)
+ return esock_make_error_errno(env, sock_errno());
+
+ SGDBG( ("SOCKET", "nopen -> open success: %d\r\n", sock) );
+
+#ifdef HAVE_SETNS
+ if ((netns != NULL) &&
+ !restore_network_namespace(current_ns, sock, &save_errno))
+ return esock_make_error_errno(env, save_errno);
+
+ if (netns != NULL)
+ FREE(netns);
+#endif
+
+
+ if ((event = sock_create_event(sock)) == INVALID_EVENT) {
+ save_errno = sock_errno();
+ while ((sock_close(sock) == INVALID_SOCKET) && (sock_errno() == EINTR));
+ return esock_make_error_errno(env, save_errno);
+ }
+
+ SGDBG( ("SOCKET", "nopen -> event success: %d\r\n", event) );
+
+ SET_NONBLOCKING(sock);
+
+
+ /* Create and initiate the socket "descriptor" */
+ if ((descP = alloc_descriptor(sock, event)) == NULL) {
+ sock_close(sock);
+ // Not sure if this is really the proper error, but...
+ return enif_make_badarg(env);
+ }
+
+ descP->state = SOCKET_STATE_OPEN;
+ descP->domain = domain;
+ descP->type = type;
+ descP->protocol = protocol;
+
+ /* Does this apply to other types? Such as RAW?
+ * Also, is this really correct? Should we not wait for bind?
+ */
+ if (type == SOCK_DGRAM) {
+ descP->isReadable = TRUE;
+ descP->isWritable = TRUE;
+ }
+
+ /*
+ * Should we keep track of sockets (resources) in some way?
+ * Doing it here will require mutex to ensure data integrity,
+ * which will be costly. Send it somewhere?
+ */
+ res = enif_make_resource(env, descP);
+ enif_release_resource(descP);
+
+ /* Keep track of the creator
+ * This should not be a problem, but just in case
+ * the *open* function is used with the wrong kind
+ * of environment...
+ */
+ if (enif_self(env, &descP->ctrlPid) == NULL)
+ return esock_make_error(env, atom_exself);
+
+ if (MONP("nopen -> ctrl",
+ env, descP,
+ &descP->ctrlPid,
+ &descP->ctrlMon) != 0)
+ return esock_make_error(env, atom_exmon);
+
+
+ inc_socket(domain, type, protocol);
+
+ return esock_make_ok2(env, res);
+}
+#endif // if !defined(__WIN32__)
+
+
+
+#ifdef HAVE_SETNS
+/* We should really have another API, so that we can return errno... */
+
+/* *** change network namespace ***
+ * Retreive the current namespace and set the new.
+ * Return result and previous namespace if successfull.
+ */
+#if !defined(__WIN32__)
+static
+BOOLEAN_T change_network_namespace(char* netns, int* cns, int* err)
+{
+ int save_errno;
+ int current_ns = 0;
+ int new_ns = 0;
+
+ SGDBG( ("SOCKET", "change_network_namespace -> entry with"
+ "\r\n new ns: %s", netns) );
+
+ if (netns != NULL) {
+ current_ns = open("/proc/self/ns/net", O_RDONLY);
+ if (current_ns == INVALID_SOCKET) {
+ *cns = current_ns;
+ *err = sock_errno();
+ return FALSE;
+ }
+ new_ns = open(netns, O_RDONLY);
+ if (new_ns == INVALID_SOCKET) {
+ save_errno = sock_errno();
+ while (close(current_ns) == INVALID_SOCKET &&
+ sock_errno() == EINTR);
+ *cns = -1;
+ *err = save_errno;
+ return FALSE;
+ }
+ if (setns(new_ns, CLONE_NEWNET) != 0) {
+ save_errno = sock_errno();
+ while ((close(new_ns) == INVALID_SOCKET) &&
+ (sock_errno() == EINTR));
+ while ((close(current_ns) == INVALID_SOCKET) &&
+ (sock_errno() == EINTR));
+ *cns = -1;
+ *err = save_errno;
+ return FALSE;
+ } else {
+ while ((close(new_ns) == INVALID_SOCKET) &&
+ (sock_errno() == EINTR));
+ *cns = current_ns;
+ *err = 0;
+ return TRUE;
+ }
+ } else {
+ *cns = INVALID_SOCKET;
+ *err = 0;
+ return TRUE;
+ }
+}
+#endif // if !defined(__WIN32__)
+
+
+/* *** restore network namespace ***
+ * Restore the previous namespace (see above).
+ */
+#if !defined(__WIN32__)
+static
+BOOLEAN_T restore_network_namespace(int ns, SOCKET sock, int* err)
+{
+ int save_errno;
+
+ SGDBG( ("SOCKET", "restore_network_namespace -> entry with"
+ "\r\n ns: %d", ns) );
+
+ if (ns != INVALID_SOCKET) {
+ if (setns(ns, CLONE_NEWNET) != 0) {
+ /* XXX Failed to restore network namespace.
+ * What to do? Tidy up and return an error...
+ * Note that the thread now might still be in the namespace.
+ * Can this even happen? Should the emulator be aborted?
+ */
+ if (sock != INVALID_SOCKET)
+ save_errno = sock_errno();
+ while (close(sock) == INVALID_SOCKET &&
+ sock_errno() == EINTR);
+ sock = INVALID_SOCKET;
+ while (close(ns) == INVALID_SOCKET &&
+ sock_errno() == EINTR);
+ *err = save_errno;
+ return FALSE;
+ } else {
+ while (close(ns) == INVALID_SOCKET &&
+ sock_errno() == EINTR);
+ *err = 0;
+ return TRUE;
+ }
+ }
+
+ *err = 0;
+ return TRUE;
+}
+#endif // if !defined(__WIN32__)
+#endif // ifdef HAVE_SETNS
+
+
+
+/* ----------------------------------------------------------------------
+ * nif_bind
+ *
+ * Description:
+ * Bind a name to a socket.
+ *
+ * Arguments:
+ * [0] Socket (ref) - Points to the socket descriptor.
+ * [1] LocalAddr - Local address is a sockaddr map ( socket:sockaddr() ).
+ */
+static
+ERL_NIF_TERM nif_bind(ErlNifEnv* env,
+ int argc,
+ const ERL_NIF_TERM argv[])
+{
+#if defined(__WIN32__)
+ return enif_raise_exception(env, MKA(env, "notsup"));
+#else
+ SocketDescriptor* descP;
+ ERL_NIF_TERM eSockAddr;
+ SocketAddress sockAddr;
+ unsigned int addrLen;
+ char* xres;
+
+ SGDBG( ("SOCKET", "nif_bind -> entry with argc: %d\r\n", argc) );
+
+ /* Extract arguments and perform preliminary validation */
+
+ if ((argc != 2) ||
+ !enif_get_resource(env, argv[0], sockets, (void**) &descP)) {
+ return enif_make_badarg(env);
+ }
+ eSockAddr = argv[1];
+
+ if (IS_CLOSED(descP) || IS_CLOSING(descP))
+ return esock_make_error(env, atom_closed);
+
+ SSDBG( descP,
+ ("SOCKET", "nif_bind -> args when sock = %d (0x%lX)"
+ "\r\n Socket: %T"
+ "\r\n SockAddr: %T"
+ "\r\n", descP->sock, descP->state, argv[0], eSockAddr) );
+
+ /* Make sure we are ready
+ * Not sure how this would even happen, but...
+ */
+ if (descP->state != SOCKET_STATE_OPEN)
+ return esock_make_error(env, atom_exbadstate);
+
+ if ((xres = esock_decode_sockaddr(env, eSockAddr, &sockAddr, &addrLen)) != NULL)
+ return esock_make_error_str(env, xres);
+
+ return nbind(env, descP, &sockAddr, addrLen);
+
+#endif // if defined(__WIN32__)
+}
+
+
+#if !defined(__WIN32__)
+static
+ERL_NIF_TERM nbind(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ SocketAddress* sockAddrP,
+ unsigned int addrLen)
+{
+ int port, ntohs_port;
+
+ SSDBG( descP, ("SOCKET", "nbind -> try bind\r\n") );
+
+ if (IS_SOCKET_ERROR(sock_bind(descP->sock,
+ (struct sockaddr*) sockAddrP, addrLen))) {
+ return esock_make_error_errno(env, sock_errno());
+ }
+
+ SSDBG( descP, ("SOCKET", "nbind -> bound - get port\r\n") );
+
+ port = which_address_port(sockAddrP);
+ SSDBG( descP, ("SOCKET", "nbind -> port: %d\r\n", port) );
+ if (port == 0) {
+ SOCKLEN_T len = sizeof(SocketAddress);
+ sys_memzero((char *) sockAddrP, len);
+ sock_name(descP->sock, &sockAddrP->sa, &len);
+ port = which_address_port(sockAddrP);
+ } else if (port == -1) {
+ port = 0;
+ }
+
+ ntohs_port = sock_ntohs(port);
+
+ SSDBG( descP, ("SOCKET", "nbind -> done with port = %d\r\n", ntohs_port) );
+
+ return esock_make_ok2(env, MKI(env, ntohs_port));
+
+}
+#endif // if !defined(__WIN32__)
+
+
+
+
+/* ----------------------------------------------------------------------
+ * nif_connect
+ *
+ * Description:
+ * Initiate a connection on a socket
+ *
+ * Arguments:
+ * Socket (ref) - Points to the socket descriptor.
+ * SockAddr - Socket Address of "remote" host.
+ * This is sockaddr(), which is either
+ * sockaddr_in4 or sockaddr_in6.
+ */
+static
+ERL_NIF_TERM nif_connect(ErlNifEnv* env,
+ int argc,
+ const ERL_NIF_TERM argv[])
+{
+#if defined(__WIN32__)
+ return enif_raise_exception(env, MKA(env, "notsup"));
+#else
+ SocketDescriptor* descP;
+ ERL_NIF_TERM res, eSockAddr;
+ char* xres;
+
+ SGDBG( ("SOCKET", "nif_connect -> entry with argc: %d\r\n", argc) );
+
+ /* Extract arguments and perform preliminary validation */
+
+ if ((argc != 2) ||
+ !enif_get_resource(env, argv[0], sockets, (void**) &descP)) {
+ return enif_make_badarg(env);
+ }
+ eSockAddr = argv[1];
+
+ SSDBG( descP,
+ ("SOCKET", "nif_connect -> args when sock = %d:"
+ "\r\n Socket: %T"
+ "\r\n SockAddr: %T"
+ "\r\n", descP->sock, argv[0], eSockAddr) );
+
+ if ((xres = esock_decode_sockaddr(env, eSockAddr,
+ &descP->remote, &descP->addrLen)) != NULL) {
+ return esock_make_error_str(env, xres);
+ }
+
+
+ MLOCK(descP->readMtx);
+ MLOCK(descP->writeMtx);
+
+ res = nconnect(env, descP);
+
+ MUNLOCK(descP->writeMtx);
+ MUNLOCK(descP->readMtx);
+
+ return res;
+
+#endif // if !defined(__WIN32__)
+}
+
+
+#if !defined(__WIN32__)
+static
+ERL_NIF_TERM nconnect(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+ ERL_NIF_TERM res, ref;
+ int code, sres, save_errno = 0;
+
+ /*
+ * Verify that we are where in the proper state
+ */
+
+ if (IS_CLOSED(descP) || IS_CLOSING(descP))
+ return esock_make_error(env, atom_closed);
+
+ if (!IS_OPEN(descP)) {
+ SSDBG( descP, ("SOCKET", "nif_connect -> not open\r\n") );
+ return esock_make_error(env, atom_exbadstate);
+ }
+
+ if (IS_CONNECTED(descP)) {
+ SSDBG( descP, ("SOCKET", "nif_connect -> already connected\r\n") );
+ return esock_make_error(env, atom_eisconn);
+ }
+
+ if (IS_CONNECTING(descP)) {
+ SSDBG( descP, ("SOCKET", "nif_connect -> already connecting\r\n") );
+ return esock_make_error(env, esock_atom_einval);
+ }
+
+
+ /*
+ * And attempt to connect
+ */
+
+ code = sock_connect(descP->sock,
+ (struct sockaddr*) &descP->remote,
+ descP->addrLen);
+ save_errno = sock_errno();
+
+ SSDBG( descP, ("SOCKET", "nif_connect -> connect result: %d, %d\r\n",
+ code, save_errno) );
+
+ if (IS_SOCKET_ERROR(code) &&
+ ((save_errno == ERRNO_BLOCK) || /* Winsock2 */
+ (save_errno == EINPROGRESS))) { /* Unix & OSE!! */
+ ref = MKREF(env);
+ descP->state = SOCKET_STATE_CONNECTING;
+ if ((sres = esock_select_write(env, descP->sock, descP, NULL, ref)) < 0) {
+ res = esock_make_error(env,
+ MKT2(env,
+ esock_atom_select_failed,
+ MKI(env, sres)));
+ } else {
+ res = esock_make_ok2(env, ref);
+ }
+ } else if (code == 0) { /* ok we are connected */
+
+ descP->state = SOCKET_STATE_CONNECTED;
+ descP->isReadable = TRUE;
+ descP->isWritable = TRUE;
+
+ res = esock_atom_ok;
+ } else {
+ res = esock_make_error_errno(env, save_errno);
+ }
+
+ return res;
+
+}
+#endif // if !defined(__WIN32__)
+
+
+/* ----------------------------------------------------------------------
+ * nif_finalize_connection
+ *
+ * Description:
+ * Make socket ready for input and output.
+ *
+ * Arguments:
+ * Socket (ref) - Points to the socket descriptor.
+ */
+static
+ERL_NIF_TERM nif_finalize_connection(ErlNifEnv* env,
+ int argc,
+ const ERL_NIF_TERM argv[])
+{
+#if defined(__WIN32__)
+ return enif_raise_exception(env, MKA(env, "notsup"));
+#else
+ SocketDescriptor* descP;
+
+ /* Extract arguments and perform preliminary validation */
+
+ if ((argc != 1) ||
+ !enif_get_resource(env, argv[0], sockets, (void**) &descP)) {
+ return enif_make_badarg(env);
+ }
+
+ return nfinalize_connection(env, descP);
+
+#endif
+}
+
+
+/* *** nfinalize_connection ***
+ * Perform the final check to verify a connection.
+ */
+#if !defined(__WIN32__)
+static
+ERL_NIF_TERM nfinalize_connection(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+ int error;
+
+ if (descP->state != SOCKET_STATE_CONNECTING)
+ return esock_make_error(env, atom_enotconn);
+
+ if (!verify_is_connected(descP, &error)) {
+ descP->state = SOCKET_STATE_OPEN; /* restore state */
+ return esock_make_error_errno(env, error);
+ }
+
+ descP->state = SOCKET_STATE_CONNECTED;
+ descP->isReadable = TRUE;
+ descP->isWritable = TRUE;
+
+ return esock_atom_ok;
+}
+#endif
+
+
+/* *** verify_is_connected ***
+ * Check if a connection has been established.
+ */
+#if !defined(__WIN32__)
+static
+BOOLEAN_T verify_is_connected(SocketDescriptor* descP, int* err)
+{
+ /*
+ * *** This is strange ***
+ *
+ * This *should* work on Windows NT too, but doesn't.
+ * An bug in Winsock 2.0 for Windows NT?
+ *
+ * See "Unix Netwok Programming", W.R.Stevens, p 412 for a
+ * discussion about Unix portability and non blocking connect.
+ */
+
+#ifndef SO_ERROR
+
+ int sz, code;
+
+ sz = sizeof(descP->remote);
+ sys_memzero((char *) &descP->remote, sz);
+ code = sock_peer(desc->sock,
+ (struct sockaddr*) &descP->remote, &sz);
+
+ if (IS_SOCKET_ERROR(code)) {
+ *err = sock_errno();
+ return FALSE;
+ }
+
+#else
+
+ int error = 0; /* Has to be initiated, we check it */
+ unsigned int sz = sizeof(error); /* even if we get -1 */
+ int code = sock_getopt(descP->sock,
+ SOL_SOCKET, SO_ERROR,
+ (void *)&error, &sz);
+
+ if ((code < 0) || error) {
+ *err = error;
+ return FALSE;
+ }
+
+#endif /* SO_ERROR */
+
+ *err = 0;
+
+ return TRUE;
+}
+#endif
+
+
+
+/* ----------------------------------------------------------------------
+ * nif_listen
+ *
+ * Description:
+ * Listen for connections on a socket.
+ *
+ * Arguments:
+ * Socket (ref) - Points to the socket descriptor.
+ * Backlog - The maximum length to which the queue of pending
+ * connections for socket may grow.
+ */
+static
+ERL_NIF_TERM nif_listen(ErlNifEnv* env,
+ int argc,
+ const ERL_NIF_TERM argv[])
+{
+#if defined(__WIN32__)
+ return enif_raise_exception(env, MKA(env, "notsup"));
+#else
+ SocketDescriptor* descP;
+ int backlog;
+
+ SGDBG( ("SOCKET", "nif_listen -> entry with argc: %d\r\n", argc) );
+
+ /* Extract arguments and perform preliminary validation */
+
+ if ((argc != 2) ||
+ !enif_get_resource(env, argv[0], sockets, (void**) &descP) ||
+ !GET_INT(env, argv[1], &backlog)) {
+ return enif_make_badarg(env);
+ }
+
+ SSDBG( descP,
+ ("SOCKET", "nif_listen -> args when sock = %d:"
+ "\r\n Socket: %T"
+ "\r\n backlog: %d"
+ "\r\n", descP->sock, argv[0], backlog) );
+
+ return nlisten(env, descP, backlog);
+
+#endif // if defined(__WIN32__)
+}
+
+
+
+#if !defined(__WIN32__)
+static
+ERL_NIF_TERM nlisten(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ int backlog)
+{
+
+ /*
+ * Verify that we are where in the proper state
+ */
+
+ if (IS_CLOSED(descP) || IS_CLOSING(descP))
+ return esock_make_error(env, atom_closed);
+
+ if (descP->state == SOCKET_STATE_CLOSED)
+ return esock_make_error(env, atom_exbadstate);
+
+ if (!IS_OPEN(descP))
+ return esock_make_error(env, atom_exbadstate);
+
+
+ /*
+ * And attempt to make socket listening
+ */
+
+ if (IS_SOCKET_ERROR(sock_listen(descP->sock, backlog)))
+ return esock_make_error_errno(env, sock_errno());
+
+ descP->state = SOCKET_STATE_LISTENING;
+
+ return esock_atom_ok;
+
+}
+#endif // if !defined(__WIN32__)
+
+
+
+/* ----------------------------------------------------------------------
+ * nif_accept
+ *
+ * Description:
+ * Accept a connection on a socket.
+ *
+ * Arguments:
+ * Socket (ref) - Points to the socket descriptor.
+ * Request ref - Unique "id" of this request
+ * (used for the select, if none is in queue).
+ */
+static
+ERL_NIF_TERM nif_accept(ErlNifEnv* env,
+ int argc,
+ const ERL_NIF_TERM argv[])
+{
+#if defined(__WIN32__)
+ return enif_raise_exception(env, MKA(env, "notsup"));
+#else
+ SocketDescriptor* descP;
+ ERL_NIF_TERM ref, res;
+
+ SGDBG( ("SOCKET", "nif_accept -> entry with argc: %d\r\n", argc) );
+
+ /* Extract arguments and perform preliminary validation */
+
+ if ((argc != 2) ||
+ !enif_get_resource(env, argv[0], sockets, (void**) &descP)) {
+ return enif_make_badarg(env);
+ }
+ ref = argv[1];
+
+ SSDBG( descP,
+ ("SOCKET", "nif_accept -> args when sock = %d:"
+ "\r\n Socket: %T"
+ "\r\n ReqRef: %T"
+ "\r\n", descP->sock, argv[0], ref) );
+
+ MLOCK(descP->accMtx);
+
+ res = naccept(env, descP, ref);
+
+ MUNLOCK(descP->accMtx);
+
+ return res;
+
+#endif // if defined(__WIN32__)
+}
+
+
+#if !defined(__WIN32__)
+static
+ERL_NIF_TERM naccept(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM ref)
+{
+ ERL_NIF_TERM res;
+
+ if (IS_CLOSED(descP) || IS_CLOSING(descP))
+ return esock_make_error(env, atom_closed);
+
+ switch (descP->state) {
+ case SOCKET_STATE_LISTENING:
+ res = naccept_listening(env, descP, ref);
+ break;
+
+ case SOCKET_STATE_ACCEPTING:
+ res = naccept_accepting(env, descP, ref);
+ break;
+
+ default:
+ res = esock_make_error(env, esock_atom_einval);
+ break;
+ }
+
+ return res;
+}
+#endif // if !defined(__WIN32__)
+
+
+/* *** naccept_listening ***
+ * We have no active acceptor (and no acceptors in queue).
+ */
+#if !defined(__WIN32__)
+static
+ERL_NIF_TERM naccept_listening(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM ref)
+{
+ SocketAddress remote;
+ unsigned int n;
+ SOCKET accSock;
+ int save_errno;
+ ErlNifPid caller;
+ ERL_NIF_TERM res;
+
+ SSDBG( descP, ("SOCKET", "naccept_listening -> get caller\r\n") );
+
+ if (enif_self(env, &caller) == NULL)
+ return esock_make_error(env, atom_exself);
+
+ n = sizeof(remote);
+ sys_memzero((char *) &remote, n);
+ SSDBG( descP, ("SOCKET", "naccept_listening -> try accept\r\n") );
+ accSock = sock_accept(descP->sock, (struct sockaddr*) &remote, &n);
+ if (accSock == INVALID_SOCKET) {
+
+ save_errno = sock_errno();
+
+ SSDBG( descP,
+ ("SOCKET",
+ "naccept_listening -> accept failed (%d)\r\n", save_errno) );
+
+ res = naccept_listening_error(env, descP, ref, caller, save_errno);
+
+ } else {
+
+ /*
+ * We got one
+ */
+
+ SSDBG( descP, ("SOCKET", "naccept_listening -> success\r\n") );
+
+ res = naccept_listening_accept(env, descP, accSock, caller, &remote);
+
+ }
+
+ return res;
+}
+
+
+/* *** naccept_listening_error ***
+ * The accept call resultet in an error - handle it.
+ * There are only two cases:
+ * 1) BLOCK => Attempt a "retry"
+ * 2) Other => Return the value (converted to an atom)
+ */
+static
+ERL_NIF_TERM naccept_listening_error(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM ref,
+ ErlNifPid caller,
+ int save_errno)
+{
+ ERL_NIF_TERM res;
+
+ if (save_errno == ERRNO_BLOCK) {
+
+ /* *** Try again later *** */
+ SSDBG( descP, ("SOCKET", "naccept_listening_error -> would block\r\n") );
+
+ descP->currentAcceptor.pid = caller;
+ if (MONP("naccept_listening -> current acceptor",
+ env, descP,
+ &descP->currentAcceptor.pid,
+ &descP->currentAcceptor.mon) != 0)
+ return esock_make_error(env, atom_exmon);
+
+ descP->currentAcceptor.ref = enif_make_copy(descP->env, ref);
+ descP->currentAcceptorP = &descP->currentAcceptor;
+
+ res = naccept_busy_retry(env, descP, ref, NULL, SOCKET_STATE_ACCEPTING);
+
+
+ } else {
+ SSDBG( descP,
+ ("SOCKET",
+ "naccept_listening -> errno: %d\r\n", save_errno) );
+ res = esock_make_error_errno(env, save_errno);
+ }
+
+ return res;
+}
+
+
+/* *** naccept_listening_accept ***
+ * The accept call was successful (accepted) - handle the new connection.
+ */
+static
+ERL_NIF_TERM naccept_listening_accept(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ SOCKET accSock,
+ ErlNifPid caller,
+ SocketAddress* remote)
+{
+ ERL_NIF_TERM res;
+
+ naccept_accepted(env, descP, accSock, caller, remote, &res);
+
+ return res;
+}
+#endif // if !defined(__WIN32__)
+
+
+
+/* *** naccept_accepting ***
+ * We have an active acceptor and possibly acceptors waiting in queue.
+ * If the pid of the calling process is not the pid of the "current process",
+ * push the requester onto the (acceptor) queue.
+ */
+#if !defined(__WIN32__)
+static
+ERL_NIF_TERM naccept_accepting(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM ref)
+{
+ ErlNifPid caller;
+ ERL_NIF_TERM res;
+
+ SSDBG( descP, ("SOCKET", "naccept_accepting -> get caller\r\n") );
+
+ if (enif_self(env, &caller) == NULL)
+ return esock_make_error(env, atom_exself);
+
+ SSDBG( descP, ("SOCKET", "naccept_accepting -> check: "
+ "are caller current acceptor:"
+ "\r\n Caller: %T"
+ "\r\n Current: %T"
+ "\r\n", caller, descP->currentAcceptor.pid) );
+
+
+
+
+ if (compare_pids(env, &descP->currentAcceptor.pid, &caller)) {
+
+ SSDBG( descP,
+ ("SOCKET", "naccept_accepting -> current acceptor\r\n") );
+
+ res = naccept_accepting_current(env, descP, ref);
+
+ } else {
+
+ /* Not the "current acceptor", so (maybe) push onto queue */
+
+ SSDBG( descP,
+ ("SOCKET", "naccept_accepting -> *not* current acceptor\r\n") );
+
+ res = naccept_accepting_other(env, descP, ref, caller);
+
+ }
+
+ return res;
+
+}
+
+
+
+/* *** naccept_accepting_current ***
+ * Handles when the current acceptor makes another attempt.
+ */
+static
+ERL_NIF_TERM naccept_accepting_current(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM ref)
+{
+ SocketAddress remote;
+ unsigned int n;
+ SOCKET accSock;
+ int save_errno;
+ ERL_NIF_TERM res;
+
+ SSDBG( descP, ("SOCKET", "naccept_accepting_current -> try accept\r\n") );
+ n = sizeof(descP->remote);
+ sys_memzero((char *) &remote, n);
+ accSock = sock_accept(descP->sock, (struct sockaddr*) &remote, &n);
+ if (accSock == INVALID_SOCKET) {
+
+ save_errno = sock_errno();
+
+ SSDBG( descP,
+ ("SOCKET",
+ "naccept_accepting_current -> accept failed: %d\r\n",
+ save_errno) );
+
+ res = naccept_accepting_current_error(env, descP, ref, save_errno);
+
+ } else {
+
+ SSDBG( descP, ("SOCKET", "naccept_accepting_current -> accepted\r\n") );
+
+ res = naccept_accepting_current_accept(env, descP, accSock, &remote);
+
+ }
+
+ return res;
+}
+
+
+/* *** naccept_accepting_current_accept ***
+ * Handles when the current acceptor succeeded in its accept call -
+ * handle the new connection.
+ */
+static
+ERL_NIF_TERM naccept_accepting_current_accept(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ SOCKET accSock,
+ SocketAddress* remote)
+{
+ int sres;
+ ERL_NIF_TERM res;
+
+ if (naccept_accepted(env, descP, accSock,
+ descP->currentAcceptor.pid, remote, &res)) {
+
+ /* We should really go through the queue until we succeed to activate
+ * a waiting acceptor. For now we just pop once and hope for the best...
+ * This will leave any remaining acceptors *hanging*...
+ *
+ * We need a "activate-next" function.
+ *
+ */
+
+ if (acceptor_pop(env, descP,
+ &descP->currentAcceptor.pid,
+ &descP->currentAcceptor.mon,
+ &descP->currentAcceptor.ref)) {
+
+ /* There was another one */
+
+ SSDBG( descP,
+ ("SOCKET",
+ "naccept_accepting_current_accept -> new (active) acceptor: "
+ "\r\n pid: %T"
+ "\r\n ref: %T"
+ "\r\n",
+ descP->currentAcceptor.pid,
+ descP->currentAcceptor.ref) );
+
+ if ((sres = esock_select_read(env, descP->sock, descP,
+ &descP->currentAcceptor.pid,
+ descP->currentAcceptor.ref)) < 0) {
+ esock_warning_msg("Failed select (%d) for new acceptor "
+ "after current (%T) died\r\n",
+ sres, descP->currentAcceptor.pid);
+ }
+ } else {
+ descP->currentAcceptorP = NULL;
+ descP->state = SOCKET_STATE_LISTENING;
+ }
+ }
+
+ return res;
+}
+
+
+/* *** naccept_accepting_current_error ***
+ * The accept call of current acceptor resultet in an error - handle it.
+ * There are only two cases:
+ * 1) BLOCK => Attempt a "retry"
+ * 2) Other => Return the value (converted to an atom)
+ */
+static
+ERL_NIF_TERM naccept_accepting_current_error(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM ref,
+ int save_errno)
+{
+ ERL_NIF_TERM res;
+
+ if (save_errno == ERRNO_BLOCK) {
+
+ /*
+ * Just try again, no real error, just a ghost trigger from poll,
+ */
+
+ SSDBG( descP,
+ ("SOCKET",
+ "naccept_accepting_current_error -> would block: try again\r\n") );
+
+ res = naccept_busy_retry(env, descP, ref, &descP->currentAcceptor.pid,
+ /* No state change */
+ descP->state);
+
+ } else {
+ res = esock_make_error_errno(env, save_errno);
+ }
+
+ return res;
+}
+
+
+/* *** naccept_accepting_other ***
+ * Handles when the another acceptor makes an attempt, which
+ * results (maybe) in the request beeing pushed onto the
+ * acceptor queue.
+ */
+static
+ERL_NIF_TERM naccept_accepting_other(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM ref,
+ ErlNifPid caller)
+{
+ ERL_NIF_TERM result;
+
+ if (!acceptor_search4pid(env, descP, &caller)) // Ugh! (&caller)
+ result = acceptor_push(env, descP, caller, ref);
+ else
+ result = esock_make_error(env, esock_atom_eagain);
+
+ return result;
+}
+#endif // if !defined(__WIN32__)
+
+
+
+/* *** naccept_busy_retry ***
+ * Perform a retry select. If successful, set nextState.
+ */
+#if !defined(__WIN32__)
+static
+ERL_NIF_TERM naccept_busy_retry(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM ref,
+ ErlNifPid* pid,
+ unsigned int nextState)
+{
+ int sres;
+ ERL_NIF_TERM res, reason;
+
+ if ((sres = esock_select_read(env, descP->sock, descP, pid, ref)) < 0) {
+ reason = MKT2(env, esock_atom_select_failed, MKI(env, sres));
+ res = esock_make_error(env, reason);
+ } else {
+ descP->state = nextState;
+ res = esock_make_error(env, esock_atom_eagain);
+ }
+
+ return res;
+}
+
+
+
+/* *** naccept_accepted ***
+ * Generic function handling a successful accept.
+ */
+static
+BOOLEAN_T naccept_accepted(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ SOCKET accSock,
+ ErlNifPid pid,
+ SocketAddress* remote,
+ ERL_NIF_TERM* result)
+{
+ SocketDescriptor* accDescP;
+ HANDLE accEvent;
+ ERL_NIF_TERM accRef;
+ int save_errno;
+
+ /*
+ * We got one
+ */
+
+ if ((accEvent = sock_create_event(accSock)) == INVALID_EVENT) {
+ save_errno = sock_errno();
+ while ((sock_close(accSock) == INVALID_SOCKET) &&
+ (sock_errno() == EINTR));
+ *result = esock_make_error_errno(env, save_errno);
+ return FALSE;
+ }
+
+ if ((accDescP = alloc_descriptor(accSock, accEvent)) == NULL) {
+ sock_close(accSock);
+ *result = enif_make_badarg(env);
+ return FALSE;
+ }
+
+ accDescP->domain = descP->domain;
+ accDescP->type = descP->type;
+ accDescP->protocol = descP->protocol;
+ accDescP->rBufSz = descP->rBufSz; // Inherit buffer size
+ accDescP->rNum = descP->rNum; // Inherit buffer uses
+ accDescP->rNumCnt = 0;
+ accDescP->rCtrlSz = descP->rCtrlSz; // Inherit buffer siez
+ accDescP->wCtrlSz = descP->wCtrlSz; // Inherit buffer size
+
+ accRef = enif_make_resource(env, accDescP);
+ enif_release_resource(accDescP);
+
+ accDescP->ctrlPid = pid;
+ if (MONP("naccept_accepted -> ctrl",
+ env, accDescP,
+ &accDescP->ctrlPid,
+ &accDescP->ctrlMon) != 0) {
+ sock_close(accSock);
+ *result = esock_make_error(env, atom_exmon);
+ return FALSE;
+ }
+
+ accDescP->remote = *remote;
+ SET_NONBLOCKING(accDescP->sock);
+
+ accDescP->state = SOCKET_STATE_CONNECTED;
+ accDescP->isReadable = TRUE;
+ accDescP->isWritable = TRUE;
+
+ *result = esock_make_ok2(env, accRef);
+
+ return TRUE;
+
+}
+#endif // if !defined(__WIN32__)
+
+
+
+/* ----------------------------------------------------------------------
+ * nif_send
+ *
+ * Description:
+ * Send a message on a socket
+ *
+ * Arguments:
+ * Socket (ref) - Points to the socket descriptor.
+ * SendRef - A unique id for this (send) request.
+ * Data - The data to send in the form of a IOVec.
+ * Flags - Send flags.
+ */
+
+static
+ERL_NIF_TERM nif_send(ErlNifEnv* env,
+ int argc,
+ const ERL_NIF_TERM argv[])
+{
+#if defined(__WIN32__)
+ return enif_raise_exception(env, MKA(env, "notsup"));
+#else
+ SocketDescriptor* descP;
+ ERL_NIF_TERM sockRef, sendRef;
+ ErlNifBinary sndData;
+ unsigned int eflags;
+ int flags;
+ ERL_NIF_TERM res;
+
+ SGDBG( ("SOCKET", "nif_send -> entry with argc: %d\r\n", argc) );
+
+ /* Extract arguments and perform preliminary validation */
+
+ if ((argc != 4) ||
+ !GET_BIN(env, argv[2], &sndData) ||
+ !GET_UINT(env, argv[3], &eflags)) {
+ return enif_make_badarg(env);
+ }
+ sockRef = argv[0]; // We need this in case we send in case we send abort
+ sendRef = argv[1];
+
+ if (!enif_get_resource(env, sockRef, sockets, (void**) &descP)) {
+ return enif_make_badarg(env);
+ }
+
+ SSDBG( descP,
+ ("SOCKET", "nif_send -> args when sock = %d:"
+ "\r\n Socket: %T"
+ "\r\n SendRef: %T"
+ "\r\n Size of data: %d"
+ "\r\n eFlags: %d"
+ "\r\n", descP->sock, sockRef, sendRef, sndData.size, eflags) );
+
+ if (!esendflags2sendflags(eflags, &flags))
+ return enif_make_badarg(env);
+
+ MLOCK(descP->writeMtx);
+
+ /* We need to handle the case when another process tries
+ * to write at the same time.
+ * If the current write could not write its entire package
+ * this time (resulting in an select). The write of the
+ * other process must be made to wait until current
+ * is done!
+ * Basically, we need a write queue!
+ *
+ * A 'writing' field (boolean), which is set if we did
+ * not manage to write the entire message and reset every
+ * time we do.
+ */
+
+ res = nsend(env, descP, sockRef, sendRef, &sndData, flags);
+
+ MUNLOCK(descP->writeMtx);
+
+ return res;
+#endif // if defined(__WIN32__)
+}
+
+
+
+/* *** nsend ***
+ *
+ * Do the actual send.
+ * Do some initial writer checks, do the actual send and then
+ * analyze the result. If we are done, another writer may be
+ * scheduled (if there is one in the writer queue).
+ */
+#if !defined(__WIN32__)
+static
+ERL_NIF_TERM nsend(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM sockRef,
+ ERL_NIF_TERM sendRef,
+ ErlNifBinary* sndDataP,
+ int flags)
+{
+ int save_errno;
+ ssize_t written;
+ ERL_NIF_TERM writerCheck;
+
+ if (!descP->isWritable)
+ return enif_make_badarg(env);
+
+ /* Check if there is already a current writer and if its us */
+ if (!send_check_writer(env, descP, sendRef, &writerCheck))
+ return writerCheck;
+
+ /* We ignore the wrap for the moment.
+ * Maybe we should issue a wrap-message to controlling process...
+ */
+ cnt_inc(&descP->writeTries, 1);
+
+ written = sock_send(descP->sock, sndDataP->data, sndDataP->size, flags);
+ if (IS_SOCKET_ERROR(written))
+ save_errno = sock_errno();
+ else
+ save_errno = -1; // The value does not actually matter in this case
+
+ return send_check_result(env, descP,
+ written, sndDataP->size, save_errno,
+ sockRef, sendRef);
+
+}
+#endif // if !defined(__WIN32__)
+
+
+
+/* ----------------------------------------------------------------------
+ * nif_sendto
+ *
+ * Description:
+ * Send a message on a socket
+ *
+ * Arguments:
+ * Socket (ref) - Points to the socket descriptor.
+ * SendRef - A unique id for this (send) request.
+ * Data - The data to send in the form of a IOVec.
+ * Dest - Destination (socket) address.
+ * Flags - Send flags.
+ */
+
+static
+ERL_NIF_TERM nif_sendto(ErlNifEnv* env,
+ int argc,
+ const ERL_NIF_TERM argv[])
+{
+#if defined(__WIN32__)
+ return enif_raise_exception(env, MKA(env, "notsup"));
+#else
+ SocketDescriptor* descP;
+ ERL_NIF_TERM sockRef, sendRef;
+ ErlNifBinary sndData;
+ unsigned int eflags;
+ int flags;
+ ERL_NIF_TERM eSockAddr;
+ SocketAddress remoteAddr;
+ unsigned int remoteAddrLen;
+ char* xres;
+ ERL_NIF_TERM res;
+
+ SGDBG( ("SOCKET", "nif_sendto -> entry with argc: %d\r\n", argc) );
+
+ /* Extract arguments and perform preliminary validation */
+
+ if ((argc != 5) ||
+ !enif_get_resource(env, argv[0], sockets, (void**) &descP) ||
+ !GET_BIN(env, argv[2], &sndData) ||
+ !GET_UINT(env, argv[4], &eflags)) {
+ return enif_make_badarg(env);
+ }
+ sockRef = argv[0]; // We need this in case we send in case we send abort
+ sendRef = argv[1];
+ eSockAddr = argv[3];
+
+ if (!enif_get_resource(env, sockRef, sockets, (void**) &descP)) {
+ return enif_make_badarg(env);
+ }
+
+ SSDBG( descP,
+ ("SOCKET", "nif_sendto -> args when sock = %d:"
+ "\r\n Socket: %T"
+ "\r\n sendRef: %T"
+ "\r\n size of data: %d"
+ "\r\n eSockAddr: %T"
+ "\r\n eflags: %d"
+ "\r\n",
+ descP->sock, sockRef, sendRef, sndData.size, eSockAddr, eflags) );
+
+ if (!esendflags2sendflags(eflags, &flags)) {
+ SSDBG( descP, ("SOCKET", "nif_sendto -> sendflags decode failed\r\n") );
+ return esock_make_error(env, esock_atom_einval);
+ }
+
+ if ((xres = esock_decode_sockaddr(env, eSockAddr,
+ &remoteAddr,
+ &remoteAddrLen)) != NULL) {
+ SSDBG( descP, ("SOCKET", "nif_sendto -> sockaddr decode: %s\r\n", xres) );
+ return esock_make_error_str(env, xres);
+ }
+
+ MLOCK(descP->writeMtx);
+
+ res = nsendto(env, descP, sockRef, sendRef, &sndData, flags,
+ &remoteAddr, remoteAddrLen);
+
+ MUNLOCK(descP->writeMtx);
+
+ SGDBG( ("SOCKET", "nif_sendto -> done with result: "
+ "\r\n %T"
+ "\r\n", res) );
+
+ return res;
+#endif // if defined(__WIN32__)
+}
+
+
+#if !defined(__WIN32__)
+static
+ERL_NIF_TERM nsendto(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM sockRef,
+ ERL_NIF_TERM sendRef,
+ ErlNifBinary* dataP,
+ int flags,
+ SocketAddress* toAddrP,
+ unsigned int toAddrLen)
+{
+ int save_errno;
+ ssize_t written;
+ ERL_NIF_TERM writerCheck;
+
+ if (!descP->isWritable)
+ return enif_make_badarg(env);
+
+ /* Check if there is already a current writer and if its us */
+ if (!send_check_writer(env, descP, sendRef, &writerCheck))
+ return writerCheck;
+
+ /* We ignore the wrap for the moment.
+ * Maybe we should issue a wrap-message to controlling process...
+ */
+ cnt_inc(&descP->writeTries, 1);
+
+ if (toAddrP != NULL) {
+ written = sock_sendto(descP->sock,
+ dataP->data, dataP->size, flags,
+ &toAddrP->sa, toAddrLen);
+ } else {
+ written = sock_sendto(descP->sock,
+ dataP->data, dataP->size, flags,
+ NULL, 0);
+ }
+ if (IS_SOCKET_ERROR(written))
+ save_errno = sock_errno();
+ else
+ save_errno = -1; // The value does not actually matter in this case
+
+ return send_check_result(env, descP, written, dataP->size, save_errno,
+ sockRef, sendRef);
+}
+#endif // if !defined(__WIN32__)
+
+
+
+/* ----------------------------------------------------------------------
+ * nif_sendmsg
+ *
+ * Description:
+ * Send a message on a socket
+ *
+ * Arguments:
+ * Socket (ref) - Points to the socket descriptor.
+ * SendRef - A unique id for this (send) request.
+ * MsgHdr - Message Header - data and (maybe) control and dest
+ * Flags - Send flags.
+ */
+
+static
+ERL_NIF_TERM nif_sendmsg(ErlNifEnv* env,
+ int argc,
+ const ERL_NIF_TERM argv[])
+{
+#if defined(__WIN32__)
+ return enif_raise_exception(env, MKA(env, "notsup"));
+#else
+ ERL_NIF_TERM res, sockRef, sendRef, eMsgHdr;
+ SocketDescriptor* descP;
+ unsigned int eflags;
+ int flags;
+
+ SGDBG( ("SOCKET", "nif_sendmsg -> entry with argc: %d\r\n", argc) );
+
+ /* Extract arguments and perform preliminary validation */
+
+ if ((argc != 4) ||
+ !IS_MAP(env, argv[2]) ||
+ !GET_UINT(env, argv[3], &eflags)) {
+ return enif_make_badarg(env);
+ }
+ sockRef = argv[0]; // We need this in case we send in case we send abort
+ sendRef = argv[1];
+ eMsgHdr = argv[2];
+
+ if (!enif_get_resource(env, sockRef, sockets, (void**) &descP)) {
+ return enif_make_badarg(env);
+ }
+
+ SSDBG( descP,
+ ("SOCKET", "nif_sendmsg -> args when sock = %d:"
+ "\r\n Socket: %T"
+ "\r\n sendRef: %T"
+ "\r\n eflags: %d"
+ "\r\n",
+ descP->sock, argv[0], sendRef, eflags) );
+
+ if (!esendflags2sendflags(eflags, &flags))
+ return esock_make_error(env, esock_atom_einval);
+
+ MLOCK(descP->writeMtx);
+
+ res = nsendmsg(env, descP, sockRef, sendRef, eMsgHdr, flags);
+
+ MUNLOCK(descP->writeMtx);
+
+ SSDBG( descP,
+ ("SOCKET", "nif_sendmsg -> done with result: "
+ "\r\n %T"
+ "\r\n", res) );
+
+ return res;
+#endif // if defined(__WIN32__)
+}
+
+
+#if !defined(__WIN32__)
+static
+ERL_NIF_TERM nsendmsg(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM sockRef,
+ ERL_NIF_TERM sendRef,
+ ERL_NIF_TERM eMsgHdr,
+ int flags)
+{
+ ERL_NIF_TERM res, eAddr, eIOV, eCtrl;
+ SocketAddress addr;
+ struct msghdr msgHdr;
+ ErlNifBinary* iovBins;
+ struct iovec* iov;
+ unsigned int iovLen;
+ char* ctrlBuf;
+ size_t ctrlBufLen, ctrlBufUsed;
+ int save_errno;
+ ssize_t written, dataSize;
+ ERL_NIF_TERM writerCheck;
+ char* xres;
+
+ if (!descP->isWritable)
+ return enif_make_badarg(env);
+
+ /* Check if there is already a current writer and if its us */
+ if (!send_check_writer(env, descP, sendRef, &writerCheck))
+ return writerCheck;
+
+ /* Depending on if we are *connected* or not, we require
+ * different things in the msghdr map.
+ */
+ if (IS_CONNECTED(descP)) {
+
+ /* We don't need the address */
+
+ SSDBG( descP, ("SOCKET", "nsendmsg -> connected: no address\r\n") );
+
+ msgHdr.msg_name = NULL;
+ msgHdr.msg_namelen = 0;
+
+ } else {
+
+ /* We need the address */
+
+ msgHdr.msg_name = (void*) &addr;
+ msgHdr.msg_namelen = sizeof(addr);
+ sys_memzero((char *) msgHdr.msg_name, msgHdr.msg_namelen);
+ if (!GET_MAP_VAL(env, eMsgHdr, esock_atom_addr, &eAddr))
+ return esock_make_error(env, esock_atom_einval);
+
+ SSDBG( descP, ("SOCKET", "nsendmsg -> not connected: "
+ "\r\n address: %T"
+ "\r\n", eAddr) );
+
+ if ((xres = esock_decode_sockaddr(env, eAddr,
+ msgHdr.msg_name,
+ &msgHdr.msg_namelen)) != NULL)
+ return esock_make_error_str(env, xres);
+ }
+
+
+ /* Extract the (other) attributes of the msghdr map: iov and maybe ctrl */
+
+ /* The *mandatory* iov, which must be a list */
+ if (!GET_MAP_VAL(env, eMsgHdr, esock_atom_iov, &eIOV))
+ return esock_make_error(env, esock_atom_einval);
+
+ if (!GET_LIST_LEN(env, eIOV, &iovLen) && (iovLen > 0))
+ return esock_make_error(env, esock_atom_einval);
+
+ SSDBG( descP, ("SOCKET", "nsendmsg -> iov length: %d\r\n", iovLen) );
+
+ iovBins = MALLOC(iovLen * sizeof(ErlNifBinary));
+ ESOCK_ASSERT( (iovBins != NULL) );
+
+ iov = MALLOC(iovLen * sizeof(struct iovec));
+ ESOCK_ASSERT( (iov != NULL) );
+
+ /* The *opional* ctrl */
+ if (GET_MAP_VAL(env, eMsgHdr, esock_atom_ctrl, &eCtrl)) {
+ ctrlBufLen = descP->wCtrlSz;
+ ctrlBuf = (char*) MALLOC(ctrlBufLen);
+ ESOCK_ASSERT( (ctrlBuf != NULL) );
+ } else {
+ eCtrl = esock_atom_undefined;
+ ctrlBufLen = 0;
+ ctrlBuf = NULL;
+ }
+ SSDBG( descP, ("SOCKET", "nsendmsg -> optional ctrl: "
+ "\r\n ctrlBuf: 0x%lX"
+ "\r\n ctrlBufLen: %d"
+ "\r\n eCtrl: %T\r\n", ctrlBuf, ctrlBufLen, eCtrl) );
+
+ /* Decode the iov and initiate that part of the msghdr */
+ if ((xres = esock_decode_iov(env, eIOV,
+ iovBins, iov, iovLen, &dataSize)) != NULL) {
+ FREE(iovBins);
+ FREE(iov);
+ if (ctrlBuf != NULL) FREE(ctrlBuf);
+ return esock_make_error_str(env, xres);
+ }
+ msgHdr.msg_iov = iov;
+ msgHdr.msg_iovlen = iovLen;
+
+
+ SSDBG( descP, ("SOCKET",
+ "nsendmsg -> total (iov) data size: %d\r\n", dataSize) );
+
+
+ /* Decode the ctrl and initiate that part of the msghdr.
+ */
+ if (ctrlBuf != NULL) {
+ if ((xres = decode_cmsghdrs(env, descP,
+ eCtrl,
+ ctrlBuf, ctrlBufLen, &ctrlBufUsed)) != NULL) {
+ FREE(iovBins);
+ FREE(iov);
+ if (ctrlBuf != NULL) FREE(ctrlBuf);
+ return esock_make_error_str(env, xres);
+ }
+ } else {
+ ctrlBufUsed = 0;
+ }
+ msgHdr.msg_control = ctrlBuf;
+ msgHdr.msg_controllen = ctrlBufUsed;
+
+
+ /* The msg-flags field is not used when sending, but zero it just in case */
+ msgHdr.msg_flags = 0;
+
+
+ /* We ignore the wrap for the moment.
+ * Maybe we should issue a wrap-message to controlling process...
+ */
+ cnt_inc(&descP->writeTries, 1);
+
+ /* And now, finally, try to send the message */
+ written = sock_sendmsg(descP->sock, &msgHdr, flags);
+
+ if (IS_SOCKET_ERROR(written))
+ save_errno = sock_errno();
+ else
+ save_errno = -1; // OK or not complete: this value should not matter in this case
+
+ res = send_check_result(env, descP, written, dataSize, save_errno,
+ sockRef, sendRef);
+
+ FREE(iovBins);
+ FREE(iov);
+ if (ctrlBuf != NULL) FREE(ctrlBuf);
+
+ return res;
+}
+#endif // if !defined(__WIN32__)
+
+
+
+/* ----------------------------------------------------------------------
+ * nif_writev / nif_sendv
+ *
+ * Description:
+ * Send a message (vector) on a socket
+ *
+ * Arguments:
+ * Socket (ref) - Points to the socket descriptor.
+ * SendRef - A unique id for this (send) request.
+ * Data - A vector of binaries
+ * Flags - Send flags.
+ */
+
+#ifdef FOBAR
+static
+ERL_NIF_TERM nwritev(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM sendRef,
+ ERL_NIF_TERM data)
+{
+ ERL_NIF_TERM tail;
+ ErlNifIOVec vec;
+ ErlNifIOVec* iovec = &vec;
+ SysIOVec* sysiovec;
+ int save_errno;
+ int iovcnt, n;
+
+ if (!enif_inspect_iovec(env, MAX_VSZ, data, &tail, &iovec))
+ return enif_make_badarg(env);
+
+ if (enif_ioq_size(descP->outQ) > 0) {
+ /* If the I/O queue contains data we enqueue the iovec
+ * and then peek the data to write out of the queue.
+ */
+ if (!enif_ioq_enqv(q, iovec, 0))
+ return -3;
+
+ sysiovec = enif_ioq_peek(descP->outQ, &iovcnt);
+
+ } else {
+ /* If the I/O queue is empty we skip the trip through it. */
+ iovcnt = iovec->iovcnt;
+ sysiovec = iovec->iov;
+ }
+
+ /* Attempt to write the data */
+ n = writev(fd, sysiovec, iovcnt);
+ saved_errno = errno;
+
+ if (enif_ioq_size(descP->outQ) == 0) {
+ /* If the I/O queue was initially empty we enqueue any
+ remaining data into the queue for writing later. */
+ if (n >= 0 && !enif_ioq_enqv(descP->outQ, iovec, n))
+ return -3;
+ } else {
+ /* Dequeue any data that was written from the queue. */
+ if (n > 0 && !enif_ioq_deq(descP->outQ, n, NULL))
+ return -4;
+ }
+ /* return n, which is either number of bytes written or -1 if
+ some error happened */
+ errno = saved_errno;
+ return n;
+}
+#endif
+
+
+
+/* ----------------------------------------------------------------------
+ * nif_recv
+ *
+ * Description:
+ * Receive a message on a socket.
+ * Normally used only on a connected socket!
+ * If we are trying to read > 0 bytes, then that is what we do.
+ * But if we have specified 0 bytes, then we want to read
+ * whatever is in the buffers (everything it got).
+ *
+ * Arguments:
+ * Socket (ref) - Points to the socket descriptor.
+ * RecvRef - A unique id for this (send) request.
+ * Length - The number of bytes to receive.
+ * Flags - Receive flags.
+ */
+
+static
+ERL_NIF_TERM nif_recv(ErlNifEnv* env,
+ int argc,
+ const ERL_NIF_TERM argv[])
+{
+#if defined(__WIN32__)
+ return enif_raise_exception(env, MKA(env, "notsup"));
+#else
+ SocketDescriptor* descP;
+ ERL_NIF_TERM sockRef, recvRef;
+ int len;
+ unsigned int eflags;
+ int flags;
+ ERL_NIF_TERM res;
+
+ if ((argc != 4) ||
+ !GET_INT(env, argv[2], &len) ||
+ !GET_UINT(env, argv[3], &eflags)) {
+ return enif_make_badarg(env);
+ }
+ sockRef = argv[0]; // We need this in case we case we send abort
+ recvRef = argv[1];
+
+ if (!enif_get_resource(env, sockRef, sockets, (void**) &descP)) {
+ return enif_make_badarg(env);
+ }
+
+ if (!erecvflags2recvflags(eflags, &flags))
+ return enif_make_badarg(env);
+
+ MLOCK(descP->readMtx);
+
+ /* We need to handle the case when another process tries
+ * to receive at the same time.
+ * If the current recv could not read its entire package
+ * this time (resulting in an select). The read of the
+ * other process must be made to wait until current
+ * is done!
+ * Basically, we need a read queue!
+ *
+ * A 'reading' field (boolean), which is set if we did
+ * not manage to read the entire message and reset every
+ * time we do.
+ */
+
+ res = nrecv(env, descP, sockRef, recvRef, len, flags);
+
+ MUNLOCK(descP->readMtx);
+
+ return res;
+#endif // if defined(__WIN32__)
+}
+
+
+/* The (read) buffer handling *must* be optimized!
+ * But for now we make it easy for ourselves by
+ * allocating a binary (of the specified or default
+ * size) and then throwing it away...
+ */
+#if !defined(__WIN32__)
+static
+ERL_NIF_TERM nrecv(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM sockRef,
+ ERL_NIF_TERM recvRef,
+ int len,
+ int flags)
+{
+ ssize_t read;
+ ErlNifBinary buf;
+ ERL_NIF_TERM readerCheck;
+ int save_errno;
+ int bufSz = (len ? len : descP->rBufSz);
+
+ SSDBG( descP, ("SOCKET", "nrecv -> entry with"
+ "\r\n len: %d (%d:%d)"
+ "\r\n flags: %d"
+ "\r\n", len, descP->rNumCnt, bufSz, flags) );
+
+ if (!descP->isReadable)
+ return enif_make_badarg(env);
+
+ /* Check if there is already a current reader and if its us */
+ if (!recv_check_reader(env, descP, recvRef, &readerCheck))
+ return readerCheck;
+
+ /* Allocate a buffer:
+ * Either as much as we want to read or (if zero (0)) use the "default"
+ * size (what has been configured).
+ */
+ if (!ALLOC_BIN(bufSz, &buf))
+ return esock_make_error(env, atom_exalloc);
+
+ /* We ignore the wrap for the moment.
+ * Maybe we should issue a wrap-message to controlling process...
+ */
+ cnt_inc(&descP->readTries, 1);
+
+ // If it fails (read = -1), we need errno...
+ SSDBG( descP, ("SOCKET", "nrecv -> try read (%d)\r\n", buf.size) );
+ read = sock_recv(descP->sock, buf.data, buf.size, flags);
+ if (IS_SOCKET_ERROR(read)) {
+ save_errno = sock_errno();
+ } else {
+ save_errno = -1; // The value does not actually matter in this case
+ }
+
+ SSDBG( descP, ("SOCKET", "nrecv -> read: %d (%d)\r\n", read, save_errno) );
+
+ return recv_check_result(env, descP,
+ read, len,
+ save_errno,
+ &buf,
+ sockRef,
+ recvRef);
+}
+#endif // if !defined(__WIN32__)
+
+
+
+/* ----------------------------------------------------------------------
+ * nif_recvfrom
+ *
+ * Description:
+ * Receive a message on a socket.
+ * Normally used only on a (un-) connected socket!
+ * If a buffer size = 0 is specified, then the we will use the default
+ * buffer size for this socket (whatever has been configured).
+ *
+ * Arguments:
+ * Socket (ref) - Points to the socket descriptor.
+ * RecvRef - A unique id for this (send) request.
+ * BufSz - Size of the buffer into which we put the received message.
+ * Flags - Receive flags.
+ *
+ * <KOLLA>
+ *
+ * How do we handle if the peek flag is set? We need to basically keep
+ * track of if we expect any data from the read. Regardless of the
+ * number of bytes we try to read.
+ *
+ * </KOLLA>
+ */
+
+static
+ERL_NIF_TERM nif_recvfrom(ErlNifEnv* env,
+ int argc,
+ const ERL_NIF_TERM argv[])
+{
+#if defined(__WIN32__)
+ return enif_raise_exception(env, MKA(env, "notsup"));
+#else
+ SocketDescriptor* descP;
+ ERL_NIF_TERM sockRef, recvRef;
+ unsigned int bufSz;
+ unsigned int eflags;
+ int flags;
+ ERL_NIF_TERM res;
+
+ SGDBG( ("SOCKET", "nif_recvfrom -> entry with argc: %d\r\n", argc) );
+
+ /* Extract arguments and perform preliminary validation */
+
+ if ((argc != 4) ||
+ !GET_UINT(env, argv[2], &bufSz) ||
+ !GET_UINT(env, argv[3], &eflags)) {
+ return enif_make_badarg(env);
+ }
+ sockRef = argv[0]; // We need this in case we send in case we send abort
+ recvRef = argv[1];
+
+ if (!enif_get_resource(env, sockRef, sockets, (void**) &descP)) {
+ return enif_make_badarg(env);
+ }
+
+ SSDBG( descP,
+ ("SOCKET", "nif_recvfrom -> args when sock = %d:"
+ "\r\n Socket: %T"
+ "\r\n recvRef: %T"
+ "\r\n bufSz: %d"
+ "\r\n eflags: %d"
+ "\r\n", descP->sock, argv[0], recvRef, bufSz, eflags) );
+
+ /* if (IS_OPEN(descP)) */
+ /* return esock_make_error(env, atom_enotconn); */
+
+ if (!erecvflags2recvflags(eflags, &flags)) {
+ SSDBG( descP, ("SOCKET", "nif_recvfrom -> recvflags decode failed\r\n") );
+ return enif_make_badarg(env);
+ }
+
+ MLOCK(descP->readMtx);
+
+ /* <KOLLA>
+ * We need to handle the case when another process tries
+ * to receive at the same time.
+ * If the current recv could not read its entire package
+ * this time (resulting in an select). The read of the
+ * other process must be made to wait until current
+ * is done!
+ * Basically, we need a read queue!
+ *
+ * A 'reading' field (boolean), which is set if we did
+ * not manage to read the entire message and reset every
+ * time we do.
+ * </KOLLA>
+ */
+
+ res = nrecvfrom(env, descP, sockRef, recvRef, bufSz, flags);
+
+ MUNLOCK(descP->readMtx);
+
+ return res;
+#endif // if defined(__WIN32__)
+}
+
+
+/* The (read) buffer handling *must* be optimized!
+ * But for now we make it easy for ourselves by
+ * allocating a binary (of the specified or default
+ * size) and then throwing it away...
+ */
+#if !defined(__WIN32__)
+static
+ERL_NIF_TERM nrecvfrom(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM sockRef,
+ ERL_NIF_TERM recvRef,
+ Uint16 len,
+ int flags)
+{
+ SocketAddress fromAddr;
+ unsigned int addrLen;
+ ssize_t read;
+ int save_errno;
+ ErlNifBinary buf;
+ ERL_NIF_TERM readerCheck;
+ int bufSz = (len ? len : descP->rBufSz);
+
+ SSDBG( descP, ("SOCKET", "nrecvfrom -> entry with"
+ "\r\n len: %d (%d)"
+ "\r\n flags: %d"
+ "\r\n", len, bufSz, flags) );
+
+ if (!descP->isReadable)
+ return enif_make_badarg(env);
+
+ /* Check if there is already a current reader and if its us */
+ if (!recv_check_reader(env, descP, recvRef, &readerCheck))
+ return readerCheck;
+
+ /* Allocate a buffer:
+ * Either as much as we want to read or (if zero (0)) use the "default"
+ * size (what has been configured).
+ */
+ if (!ALLOC_BIN(bufSz, &buf))
+ return esock_make_error(env, atom_exalloc);
+
+ /* We ignore the wrap for the moment.
+ * Maybe we should issue a wrap-message to controlling process...
+ */
+ cnt_inc(&descP->readTries, 1);
+
+ addrLen = sizeof(fromAddr);
+ sys_memzero((char*) &fromAddr, addrLen);
+
+ read = sock_recvfrom(descP->sock, buf.data, buf.size, flags,
+ &fromAddr.sa, &addrLen);
+ if (IS_SOCKET_ERROR(read))
+ save_errno = sock_errno();
+ else
+ save_errno = -1; // The value does not actually matter in this case
+
+ return recvfrom_check_result(env, descP,
+ read,
+ save_errno,
+ &buf,
+ &fromAddr, addrLen,
+ sockRef,
+ recvRef);
+}
+#endif // if !defined(__WIN32__)
+
+
+
+/* ----------------------------------------------------------------------
+ * nif_recvmsg
+ *
+ * Description:
+ * Receive a message on a socket.
+ * Normally used only on a (un-) connected socket!
+ * If a buffer size = 0 is specified, then we will use the default
+ * buffer size for this socket (whatever has been configured).
+ * If ctrl (buffer) size = 0 is specified, then the default ctrl
+ * (buffer) size is used (1024).
+ *
+ * Arguments:
+ * Socket (ref) - Points to the socket descriptor.
+ * RecvRef - A unique id for this (send) request.
+ * BufSz - Size of the buffer into which we put the received message.
+ * CtrlSz - Size of the ctrl (buffer) into which we put the received
+ * ancillary data.
+ * Flags - Receive flags.
+ *
+ * <KOLLA>
+ *
+ * How do we handle if the peek flag is set? We need to basically keep
+ * track of if we expect any data from the read. Regardless of the
+ * number of bytes we try to read.
+ *
+ * </KOLLA>
+ */
+
+static
+ERL_NIF_TERM nif_recvmsg(ErlNifEnv* env,
+ int argc,
+ const ERL_NIF_TERM argv[])
+{
+#if defined(__WIN32__)
+ return enif_raise_exception(env, MKA(env, "notsup"));
+#else
+ SocketDescriptor* descP;
+ ERL_NIF_TERM sockRef, recvRef;
+ unsigned int bufSz;
+ unsigned int ctrlSz;
+ unsigned int eflags;
+ int flags;
+ ERL_NIF_TERM res;
+
+ SGDBG( ("SOCKET", "nif_recvmsg -> entry with argc: %d\r\n", argc) );
+
+ /* Extract arguments and perform preliminary validation */
+
+ if ((argc != 5) ||
+ !GET_UINT(env, argv[2], &bufSz) ||
+ !GET_UINT(env, argv[3], &ctrlSz) ||
+ !GET_UINT(env, argv[4], &eflags)) {
+ return enif_make_badarg(env);
+ }
+ sockRef = argv[0]; // We need this in case we send in case we send abort
+ recvRef = argv[1];
+
+ if (!enif_get_resource(env, sockRef, sockets, (void**) &descP)) {
+ return enif_make_badarg(env);
+ }
+
+ SSDBG( descP,
+ ("SOCKET", "nif_recvmsg -> args when sock = %d:"
+ "\r\n Socket: %T"
+ "\r\n recvRef: %T"
+ "\r\n bufSz: %d"
+ "\r\n ctrlSz: %d"
+ "\r\n eflags: %d"
+ "\r\n", descP->sock, argv[0], recvRef, bufSz, ctrlSz, eflags) );
+
+ /* if (IS_OPEN(descP)) */
+ /* return esock_make_error(env, atom_enotconn); */
+
+ if (!erecvflags2recvflags(eflags, &flags))
+ return enif_make_badarg(env);
+
+ MLOCK(descP->readMtx);
+
+ /* <KOLLA>
+ *
+ * We need to handle the case when another process tries
+ * to receive at the same time.
+ * If the current recv could not read its entire package
+ * this time (resulting in an select). The read of the
+ * other process must be made to wait until current
+ * is done!
+ * Basically, we need a read queue!
+ *
+ * A 'reading' field (boolean), which is set if we did
+ * not manage to read the entire message and reset every
+ * time we do.
+ *
+ * </KOLLA>
+ */
+
+ res = nrecvmsg(env, descP, sockRef, recvRef, bufSz, ctrlSz, flags);
+
+ MUNLOCK(descP->readMtx);
+
+ return res;
+#endif // if defined(__WIN32__)
+}
+
+
+/* The (read) buffer handling *must* be optimized!
+ * But for now we make it easy for ourselves by
+ * allocating a binary (of the specified or default
+ * size) and then throwing it away...
+ */
+#if !defined(__WIN32__)
+static
+ERL_NIF_TERM nrecvmsg(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM sockRef,
+ ERL_NIF_TERM recvRef,
+ Uint16 bufLen,
+ Uint16 ctrlLen,
+ int flags)
+{
+ unsigned int addrLen;
+ ssize_t read;
+ int save_errno;
+ int bufSz = (bufLen ? bufLen : descP->rBufSz);
+ int ctrlSz = (ctrlLen ? ctrlLen : descP->rCtrlSz);
+ struct msghdr msgHdr;
+ struct iovec iov[1]; // Shall we always use 1?
+ ErlNifBinary data[1]; // Shall we always use 1?
+ ErlNifBinary ctrl;
+ ERL_NIF_TERM readerCheck;
+ SocketAddress addr;
+
+ SSDBG( descP, ("SOCKET", "nrecvmsg -> entry with"
+ "\r\n bufSz: %d (%d)"
+ "\r\n ctrlSz: %d (%d)"
+ "\r\n flags: %d"
+ "\r\n", bufSz, bufLen, ctrlSz, ctrlLen, flags) );
+
+ if (!descP->isReadable)
+ return enif_make_badarg(env);
+
+ /* Check if there is already a current reader and if its us */
+ if (!recv_check_reader(env, descP, recvRef, &readerCheck))
+ return readerCheck;
+
+ /*
+ for (i = 0; i < sizeof(buf); i++) {
+ if (!ALLOC_BIN(bifSz, &buf[i]))
+ return esock_make_error(env, atom_exalloc);
+ iov[i].iov_base = buf[i].data;
+ iov[i].iov_len = buf[i].size;
+ }
+ */
+
+ /* Allocate the (msg) data buffer:
+ */
+ if (!ALLOC_BIN(bufSz, &data[0]))
+ return esock_make_error(env, atom_exalloc);
+
+ /* Allocate the ctrl (buffer):
+ */
+ if (!ALLOC_BIN(ctrlSz, &ctrl))
+ return esock_make_error(env, atom_exalloc);
+
+ /* We ignore the wrap for the moment.
+ * Maybe we should issue a wrap-message to controlling process...
+ */
+ cnt_inc(&descP->readTries, 1);
+
+ addrLen = sizeof(addr);
+ sys_memzero((char*) &addr, addrLen);
+ sys_memzero((char*) &msgHdr, sizeof(msgHdr));
+
+ iov[0].iov_base = data[0].data;
+ iov[0].iov_len = data[0].size;
+
+ msgHdr.msg_name = &addr;
+ msgHdr.msg_namelen = addrLen;
+ msgHdr.msg_iov = iov;
+ msgHdr.msg_iovlen = 1; // Should use a constant or calculate...
+ msgHdr.msg_control = ctrl.data;
+ msgHdr.msg_controllen = ctrl.size;
+
+ read = sock_recvmsg(descP->sock, &msgHdr, flags);
+ if (IS_SOCKET_ERROR(read))
+ save_errno = sock_errno();
+ else
+ save_errno = -1; // The value does not actually matter in this case
+
+ return recvmsg_check_result(env, descP,
+ read,
+ save_errno,
+ &msgHdr,
+ data, // Needed for iov encode
+ &ctrl, // Needed for ctrl header encode
+ sockRef,
+ recvRef);
+}
+#endif // if !defined(__WIN32__)
+
+
+
+/* ----------------------------------------------------------------------
+ * nif_close
+ *
+ * Description:
+ * Close a (socket) file descriptor.
+ *
+ * Arguments:
+ * Socket (ref) - Points to the socket descriptor.
+ */
+
+static
+ERL_NIF_TERM nif_close(ErlNifEnv* env,
+ int argc,
+ const ERL_NIF_TERM argv[])
+{
+#if defined(__WIN32__)
+ return enif_raise_exception(env, MKA(env, "notsup"));
+#else
+ SocketDescriptor* descP;
+
+ if ((argc != 1) ||
+ !enif_get_resource(env, argv[0], sockets, (void**) &descP)) {
+ return enif_make_badarg(env);
+ }
+
+ if (IS_CLOSED(descP) || IS_CLOSING(descP))
+ return esock_make_error(env, atom_closed);
+
+ return nclose(env, descP);
+#endif // if defined(__WIN32__)
+}
+
+
+#if !defined(__WIN32__)
+static
+ERL_NIF_TERM nclose(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+ ERL_NIF_TERM reply, reason;
+ BOOLEAN_T doClose;
+ int selectRes;
+ int domain = descP->domain;
+ int type = descP->type;
+ int protocol = descP->protocol;
+
+ SSDBG( descP, ("SOCKET",
+ "nclose -> [%d] entry (0x%lX, 0x%lX, 0x%lX, 0x%lX)\r\n",
+ descP->sock,
+ descP->state,
+ descP->currentWriterP,
+ descP->currentReaderP,
+ descP->currentAcceptorP) );
+
+ MLOCK(descP->closeMtx);
+
+ if (descP->state == SOCKET_STATE_CLOSED) {
+ reason = atom_closed;
+ doClose = FALSE;
+ } else if (descP->state == SOCKET_STATE_CLOSING) {
+ reason = atom_closing;
+ doClose = FALSE;
+ } else {
+
+ /* Store the PID of the caller,
+ * since we need to inform it when we
+ * (that is, the stop callback function)
+ * completes.
+ */
+
+ if (enif_self(env, &descP->closerPid) == NULL) {
+ MUNLOCK(descP->closeMtx);
+ return esock_make_error(env, atom_exself);
+ }
+
+ /* Monitor the caller, since we should complete this operation even if
+ * the caller dies (for whatever reason).
+ *
+ * <KOLLA>
+ *
+ * Can we actiually use this for anything?
+ *
+ * </KOLLA>
+ */
+
+ if (MONP("nclose -> closer",
+ env, descP,
+ &descP->closerPid,
+ &descP->closerMon) != 0) {
+ MUNLOCK(descP->closeMtx);
+ return esock_make_error(env, atom_exmon);
+ }
+
+ descP->closeLocal = TRUE;
+ descP->state = SOCKET_STATE_CLOSING;
+ descP->isReadable = FALSE;
+ descP->isWritable = FALSE;
+ doClose = TRUE;
+ }
+
+ if (doClose) {
+ descP->closeEnv = enif_alloc_env();
+ descP->closeRef = MKREF(descP->closeEnv);
+ selectRes = esock_select_stop(env, descP->sock, descP);
+ if (selectRes & ERL_NIF_SELECT_STOP_CALLED) {
+ /* Prep done - inform the caller it can finalize (close) directly */
+ SSDBG( descP,
+ ("SOCKET", "nclose -> [%d] stop was called\r\n", descP->sock) );
+ dec_socket(domain, type, protocol);
+ reply = esock_atom_ok;
+ } else if (selectRes & ERL_NIF_SELECT_STOP_SCHEDULED) {
+ /* The stop callback function has been *scheduled* which means that we
+ * have to wait for it to complete. */
+ SSDBG( descP,
+ ("SOCKET", "nclose -> [%d] stop was scheduled\r\n",
+ descP->sock) );
+ dec_socket(domain, type, protocol); // SHALL WE DO THIS AT finalize?
+ reply = esock_make_ok2(env, descP->closeRef);
+ } else {
+
+ SSDBG( descP,
+ ("SOCKET", "nclose -> [%d] stop failed: %d\r\n",
+ descP->sock, selectRes) );
+
+ /* <KOLLA>
+ *
+ * WE SHOULD REALLY HAVE A WAY TO CLOBBER THE SOCKET,
+ * SO WE DON'T LET STUFF LEAK.
+ * NOW, BECAUSE WE FAILED TO SELECT, WE CANNOT FINISH
+ * THE CLOSE, WHAT TO DO? ABORT?
+ *
+ * </KOLLA>
+ */
+
+ // No point in having this?
+ DEMONP("nclose -> closer", env, descP, &descP->closerMon);
+
+ reason = MKT2(env, atom_select, MKI(env, selectRes));
+ reply = esock_make_error(env, reason);
+ }
+
+ } else {
+ reply = esock_make_error(env, reason);
+ }
+
+ MUNLOCK(descP->closeMtx);
+
+ SSDBG( descP,
+ ("SOCKET", "nclose -> [%d] done when: "
+ "\r\n state: 0x%lX"
+ "\r\n reply: %T"
+ "\r\n", descP->sock, descP->state, reply) );
+
+ return reply;
+}
+#endif // if !defined(__WIN32__)
+
+
+
+/* ----------------------------------------------------------------------
+ * nif_finalize_close
+ *
+ * Description:
+ * Perform the actual socket close!
+ * Note that this function is executed in a dirty scheduler.
+ *
+ * Arguments:
+ * Socket (ref) - Points to the socket descriptor.
+ */
+static
+ERL_NIF_TERM nif_finalize_close(ErlNifEnv* env,
+ int argc,
+ const ERL_NIF_TERM argv[])
+{
+#if defined(__WIN32__)
+ return enif_raise_exception(env, MKA(env, "notsup"));
+#else
+ SocketDescriptor* descP;
+
+ /* Extract arguments and perform preliminary validation */
+
+ if ((argc != 1) ||
+ !enif_get_resource(env, argv[0], sockets, (void**) &descP)) {
+ return enif_make_badarg(env);
+ }
+
+ return nfinalize_close(env, descP);
+#endif // if defined(__WIN32__)
+}
+
+
+/* *** nfinalize_close ***
+ * Perform the final step in the socket close.
+ */
+#if !defined(__WIN32__)
+static
+ERL_NIF_TERM nfinalize_close(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+ ERL_NIF_TERM reply;
+
+ if (IS_CLOSED(descP))
+ return esock_atom_ok;
+
+ if (!IS_CLOSING(descP))
+ return esock_make_error(env, atom_enotclosing);
+
+ /* This nif is executed in a dirty scheduler just so that
+ * it can "hang" (whith minumum effect on the VM) while the
+ * kernel writes our buffers. IF we have set the linger option
+ * for this ({true, integer() > 0}). For this to work we must
+ * be blocking...
+ */
+ SET_BLOCKING(descP->sock);
+
+ if (sock_close(descP->sock) != 0) {
+ int save_errno = sock_errno();
+
+ if (save_errno != ERRNO_BLOCK) {
+ /* Not all data in the buffers where sent,
+ * make sure the caller gets this.
+ */
+ reply = esock_make_error(env, atom_timeout);
+ } else {
+ reply = esock_make_error_errno(env, save_errno);
+ }
+ } else {
+ reply = esock_atom_ok;
+ }
+ sock_close_event(descP->event);
+
+ descP->sock = INVALID_SOCKET;
+ descP->event = INVALID_EVENT;
+
+ descP->state = SOCKET_STATE_CLOSED;
+
+ return reply;
+}
+#endif // if !defined(__WIN32__)
+
+
+
+/* ----------------------------------------------------------------------
+ * nif_shutdown
+ *
+ * Description:
+ * Disable sends and/or receives on a socket.
+ *
+ * Arguments:
+ * [0] Socket (ref) - Points to the socket descriptor.
+ * [1] How - What will be shutdown.
+ */
+
+static
+ERL_NIF_TERM nif_shutdown(ErlNifEnv* env,
+ int argc,
+ const ERL_NIF_TERM argv[])
+{
+#if defined(__WIN32__)
+ return enif_raise_exception(env, MKA(env, "notsup"));
+#else
+ SocketDescriptor* descP;
+ unsigned int ehow;
+ int how;
+
+ if ((argc != 2) ||
+ !enif_get_resource(env, argv[0], sockets, (void**) &descP) ||
+ !GET_UINT(env, argv[1], &ehow)) {
+ return enif_make_badarg(env);
+ }
+
+ if (IS_CLOSED(descP) || IS_CLOSING(descP))
+ return esock_make_error(env, atom_closed);
+
+ if (!ehow2how(ehow, &how))
+ return enif_make_badarg(env);
+
+ return nshutdown(env, descP, how);
+#endif // if defined(__WIN32__)
+}
+
+
+
+#if !defined(__WIN32__)
+static
+ERL_NIF_TERM nshutdown(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ int how)
+{
+ ERL_NIF_TERM reply;
+
+ if (sock_shutdown(descP->sock, how) == 0) {
+ switch (how) {
+ case SHUT_RD:
+ descP->isReadable = FALSE;
+ break;
+ case SHUT_WR:
+ descP->isWritable = FALSE;
+ break;
+ case SHUT_RDWR:
+ descP->isReadable = FALSE;
+ descP->isWritable = FALSE;
+ break;
+ }
+ reply = esock_atom_ok;
+ } else {
+ reply = esock_make_error_errno(env, sock_errno());
+ }
+
+ return reply;
+}
+#endif // if !defined(__WIN32__)
+
+
+
+
+/* ----------------------------------------------------------------------
+ * nif_setopt
+ *
+ * Description:
+ * Set socket option.
+ * Its possible to use a "raw" mode (not encoded). That is, we do not
+ * interpret level, opt and value. They are passed "as is" to the
+ * setsockopt function call (the value arguments is assumed to be a
+ * binary, already encoded).
+ *
+ * Arguments:
+ * Socket (ref) - Points to the socket descriptor.
+ * Encoded - Are the "arguments" encoded or not.
+ * Level - Level of the socket option.
+ * Opt - The socket option.
+ * Value - Value of the socket option (type depend on the option).
+ */
+
+static
+ERL_NIF_TERM nif_setopt(ErlNifEnv* env,
+ int argc,
+ const ERL_NIF_TERM argv[])
+{
+#if defined(__WIN32__)
+ return enif_raise_exception(env, MKA(env, "notsup"));
+#else
+ SocketDescriptor* descP = NULL;
+ int eLevel, level = -1;
+ int eOpt;
+ ERL_NIF_TERM eIsEncoded;
+ ERL_NIF_TERM eVal;
+ BOOLEAN_T isEncoded, isOTP;
+ ERL_NIF_TERM result;
+
+ SGDBG( ("SOCKET", "nif_setopt -> entry with argc: %d\r\n", argc) );
+
+ /* Extract arguments and perform preliminary validation */
+
+ if ((argc != 5) ||
+ !enif_get_resource(env, argv[0], sockets, (void**) &descP) ||
+ !GET_INT(env, argv[2], &eLevel) ||
+ !GET_INT(env, argv[3], &eOpt)) {
+ SGDBG( ("SOCKET", "nif_setopt -> failed initial arg check\r\n") );
+ return enif_make_badarg(env);
+ }
+ eIsEncoded = argv[1];
+ eVal = argv[4];
+
+ if (IS_CLOSED(descP) || IS_CLOSING(descP))
+ return esock_make_error(env, atom_closed);
+
+ isEncoded = esock_decode_bool(eIsEncoded);
+
+ /* SGDBG( ("SOCKET", "nif_setopt -> eIsDecoded (%T) decoded: %d\r\n", */
+ /* eIsEncoded, isEncoded) ); */
+
+ if (!elevel2level(isEncoded, eLevel, &isOTP, &level)) {
+ SSDBG( descP, ("SOCKET", "nif_seopt -> failed decode level\r\n") );
+ return esock_make_error(env, esock_atom_einval);
+ }
+
+ SSDBG( descP,
+ ("SOCKET", "nif_setopt -> args when sock = %d:"
+ "\r\n Socket: %T"
+ "\r\n Encoded: %d (%T)"
+ "\r\n Level: %d (%d)"
+ "\r\n Opt: %d"
+ "\r\n Value: %T"
+ "\r\n",
+ descP->sock, argv[0],
+ isEncoded, eIsEncoded,
+ level, eLevel,
+ eOpt, eVal) );
+
+ result = nsetopt(env, descP, isEncoded, isOTP, level, eOpt, eVal);
+
+ SSDBG( descP,
+ ("SOCKET", "nif_setopt -> done when"
+ "\r\n result: %T"
+ "\r\n", result) );
+
+ return result;
+#endif // if defined(__WIN32__)
+}
+
+
+#if !defined(__WIN32__)
+static
+ERL_NIF_TERM nsetopt(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ BOOLEAN_T isEncoded,
+ BOOLEAN_T isOTP,
+ int level,
+ int eOpt,
+ ERL_NIF_TERM eVal)
+{
+ ERL_NIF_TERM result;
+
+ if (isOTP) {
+ /* These are not actual socket options,
+ * but options for our implementation.
+ */
+ result = nsetopt_otp(env, descP, eOpt, eVal);
+ } else if (!isEncoded) {
+ result = nsetopt_native(env, descP, level, eOpt, eVal);
+ } else {
+ result = nsetopt_level(env, descP, level, eOpt, eVal);
+ }
+
+ return result;
+}
+
+
+
+/* nsetopt_otp - Handle OTP (level) options
+ */
+static
+ERL_NIF_TERM nsetopt_otp(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ int eOpt,
+ ERL_NIF_TERM eVal)
+{
+ ERL_NIF_TERM result;
+
+ SSDBG( descP,
+ ("SOCKET", "nsetopt_otp -> entry with"
+ "\r\n eOpt: %d"
+ "\r\n eVal: %T"
+ "\r\n", eOpt, eVal) );
+
+ switch (eOpt) {
+ case SOCKET_OPT_OTP_DEBUG:
+ result = nsetopt_otp_debug(env, descP, eVal);
+ break;
+
+ case SOCKET_OPT_OTP_IOW:
+ result = nsetopt_otp_iow(env, descP, eVal);
+ break;
+
+ case SOCKET_OPT_OTP_CTRL_PROC:
+ result = nsetopt_otp_ctrl_proc(env, descP, eVal);
+ break;
+
+ case SOCKET_OPT_OTP_RCVBUF:
+ result = nsetopt_otp_rcvbuf(env, descP, eVal);
+ break;
+
+ case SOCKET_OPT_OTP_RCVCTRLBUF:
+ result = nsetopt_otp_rcvctrlbuf(env, descP, eVal);
+ break;
+
+ case SOCKET_OPT_OTP_SNDCTRLBUF:
+ result = nsetopt_otp_sndctrlbuf(env, descP, eVal);
+ break;
+
+ default:
+ result = esock_make_error(env, esock_atom_einval);
+ break;
+ }
+
+ return result;
+}
+
+
+/* nsetopt_otp_debug - Handle the OTP (level) debug options
+ */
+static
+ERL_NIF_TERM nsetopt_otp_debug(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+ descP->dbg = esock_decode_bool(eVal);
+
+ return esock_atom_ok;
+}
+
+
+/* nsetopt_otp_iow - Handle the OTP (level) iow options
+ */
+static
+ERL_NIF_TERM nsetopt_otp_iow(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+ descP->iow = esock_decode_bool(eVal);
+
+ return esock_atom_ok;
+}
+
+
+
+/* nsetopt_otp_ctrl_proc - Handle the OTP (level) controlling_process options
+ */
+static
+ERL_NIF_TERM nsetopt_otp_ctrl_proc(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+ ErlNifPid caller, newCtrlPid;
+ // ErlNifMonitor newCtrlMon;
+ ESockMonitor newCtrlMon;
+ int xres;
+
+ SSDBG( descP,
+ ("SOCKET", "nsetopt_otp_ctrl_proc -> entry with"
+ "\r\n eVal: %T"
+ "\r\n", eVal) );
+
+ /* Before we begin, ensure that caller is (current) controlling-process */
+ if (enif_self(env, &caller) == NULL)
+ return esock_make_error(env, atom_exself);
+
+ if (!compare_pids(env, &descP->ctrlPid, &caller)) {
+ SSDBG( descP, ("SOCKET", "nsetopt_otp_ctrl_proc -> not owner (%T)\r\n",
+ descP->ctrlPid) );
+ return esock_make_error(env, esock_atom_not_owner);
+ }
+
+ if (!GET_LPID(env, eVal, &newCtrlPid)) {
+ esock_warning_msg("Failed get pid of new controlling process\r\n");
+ return esock_make_error(env, esock_atom_einval);
+ }
+
+ if ((xres = MONP("nsetopt_otp_ctrl_proc -> (new) ctrl",
+ env, descP, &newCtrlPid, &newCtrlMon)) != 0) {
+ esock_warning_msg("Failed monitor %d) (new) controlling process\r\n", xres);
+ return esock_make_error(env, esock_atom_einval);
+ }
+
+ if ((xres = DEMONP("nsetopt_otp_ctrl_proc -> (old) ctrl",
+ env, descP, &descP->ctrlMon)) != 0) {
+ esock_warning_msg("Failed demonitor (%d) "
+ "old controlling process %T (%T)\r\n",
+ xres, descP->ctrlPid, descP->ctrlMon);
+ }
+
+ descP->ctrlPid = newCtrlPid;
+ descP->ctrlMon = newCtrlMon;
+
+ SSDBG( descP, ("SOCKET", "nsetopt_otp_ctrl_proc -> done\r\n") );
+
+ return esock_atom_ok;
+}
+
+
+
+/* nsetopt_otp_rcvbuf - Handle the OTP (level) rcvbuf option
+ * The (otp) rcvbuf option is provided as:
+ *
+ * BufSz :: integer() | {N :: pos_integer(), BufSz :: pod_integer()}
+ *
+ * Where N is the max number of reads.
+ */
+static
+ERL_NIF_TERM nsetopt_otp_rcvbuf(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+ const ERL_NIF_TERM* t; // The array of the elements of the tuple
+ int tsz; // The size of the tuple - should be 2
+ unsigned int n;
+ size_t bufSz;
+ char* xres;
+
+ if (IS_NUM(env, eVal)) {
+
+ /* This will have the effect that the buffer size will be
+ * reported as an integer (getopt).
+ */
+ n = 0;
+
+ if ((xres = esock_decode_bufsz(env,
+ eVal,
+ SOCKET_RECV_BUFFER_SIZE_DEFAULT,
+ &bufSz)) != NULL)
+ return esock_make_error_str(env, xres);
+
+ } else if (IS_TUPLE(env, eVal)) {
+
+ if (!GET_TUPLE(env, eVal, &tsz, &t))
+ return enif_make_badarg(env); // We should use a "proper" error value...
+
+ if (tsz != 2)
+ return enif_make_badarg(env); // We should use a "proper" error value...
+
+ if (!GET_UINT(env, t[0], &n))
+ return enif_make_badarg(env); // We should use a "proper" error value...
+
+ if ((xres = esock_decode_bufsz(env,
+ t[1],
+ SOCKET_RECV_BUFFER_SIZE_DEFAULT,
+ &bufSz)) != NULL)
+ return esock_make_error_str(env, xres);
+
+ } else {
+ return enif_make_badarg(env); // We should use a "proper" error value...
+ }
+
+ descP->rNum = n;
+ descP->rBufSz = bufSz;
+
+ return esock_atom_ok;
+}
+
+
+
+/* nsetopt_otp_rcvctrlbuf - Handle the OTP (level) rcvctrlbuf option
+ */
+static
+ERL_NIF_TERM nsetopt_otp_rcvctrlbuf(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+ size_t val;
+ char* xres;
+
+ if ((xres = esock_decode_bufsz(env,
+ eVal,
+ SOCKET_RECV_CTRL_BUFFER_SIZE_DEFAULT,
+ &val)) != NULL)
+ return esock_make_error_str(env, xres);
+
+ descP->rCtrlSz = val;
+
+ return esock_atom_ok;
+}
+
+
+
+/* nsetopt_otp_sndctrlbuf - Handle the OTP (level) sndctrlbuf option
+ */
+static
+ERL_NIF_TERM nsetopt_otp_sndctrlbuf(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+ size_t val;
+ char* xres;
+
+ if ((xres = esock_decode_bufsz(env,
+ eVal,
+ SOCKET_SEND_CTRL_BUFFER_SIZE_DEFAULT,
+ &val)) != NULL)
+ return esock_make_error_str(env, xres);
+
+ descP->wCtrlSz = val;
+
+ return esock_atom_ok;
+}
+
+
+
+/* The option has *not* been encoded. Instead it has been provided
+ * in "native mode" (option is provided as is and value as a binary).
+ */
+static
+ERL_NIF_TERM nsetopt_native(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ int level,
+ int opt,
+ ERL_NIF_TERM eVal)
+{
+ ErlNifBinary val;
+ ERL_NIF_TERM result;
+
+ SSDBG( descP,
+ ("SOCKET", "nsetopt_native -> entry with"
+ "\r\n level: %d"
+ "\r\n opt: %d"
+ "\r\n eVal: %T"
+ "\r\n", level, opt, eVal) );
+
+ if (GET_BIN(env, eVal, &val)) {
+ int res = socket_setopt(descP->sock, level, opt,
+ val.data, val.size);
+ if (res != 0)
+ result = esock_make_error_errno(env, sock_errno());
+ else
+ result = esock_atom_ok;
+ } else {
+ result = esock_make_error(env, esock_atom_einval);
+ }
+
+ SSDBG( descP,
+ ("SOCKET", "nsetopt_native -> done when"
+ "\r\n result: %T"
+ "\r\n", result) );
+
+ return result;
+}
+
+
+
+/* nsetopt_level - A "proper" level (option) has been specified
+ */
+static
+ERL_NIF_TERM nsetopt_level(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ int level,
+ int eOpt,
+ ERL_NIF_TERM eVal)
+{
+ ERL_NIF_TERM result;
+
+ SSDBG( descP,
+ ("SOCKET", "nsetopt_level -> entry with"
+ "\r\n level: %d"
+ "\r\n", level) );
+
+ switch (level) {
+ case SOL_SOCKET:
+ result = nsetopt_lvl_socket(env, descP, eOpt, eVal);
+ break;
+
+#if defined(SOL_IP)
+ case SOL_IP:
+#else
+ case IPPROTO_IP:
+#endif
+ result = nsetopt_lvl_ip(env, descP, eOpt, eVal);
+ break;
+
+#if defined(HAVE_IPV6)
+#if defined(SOL_IPV6)
+ case SOL_IPV6:
+#else
+ case IPPROTO_IPV6:
+#endif
+ result = nsetopt_lvl_ipv6(env, descP, eOpt, eVal);
+ break;
+#endif
+
+ case IPPROTO_TCP:
+ result = nsetopt_lvl_tcp(env, descP, eOpt, eVal);
+ break;
+
+ case IPPROTO_UDP:
+ result = nsetopt_lvl_udp(env, descP, eOpt, eVal);
+ break;
+
+#if defined(HAVE_SCTP)
+ case IPPROTO_SCTP:
+ result = nsetopt_lvl_sctp(env, descP, eOpt, eVal);
+ break;
+#endif
+
+ default:
+ SSDBG( descP,
+ ("SOCKET", "nsetopt_level -> unknown level (%d)\r\n", level) );
+ result = esock_make_error(env, esock_atom_einval);
+ break;
+ }
+
+ SSDBG( descP,
+ ("SOCKET", "nsetopt_level -> done when"
+ "\r\n result: %T"
+ "\r\n", result) );
+
+ return result;
+}
+
+
+
+/* nsetopt_lvl_socket - Level *SOCKET* option
+ */
+static
+ERL_NIF_TERM nsetopt_lvl_socket(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ int eOpt,
+ ERL_NIF_TERM eVal)
+{
+ ERL_NIF_TERM result;
+
+ SSDBG( descP,
+ ("SOCKET", "nsetopt_lvl_socket -> entry with"
+ "\r\n opt: %d"
+ "\r\n", eOpt) );
+
+ switch (eOpt) {
+#if defined(SO_BINDTODEVICE)
+ case SOCKET_OPT_SOCK_BINDTODEVICE:
+ result = nsetopt_lvl_sock_bindtodevice(env, descP, eVal);
+ break;
+#endif
+
+#if defined(SO_BROADCAST)
+ case SOCKET_OPT_SOCK_BROADCAST:
+ result = nsetopt_lvl_sock_broadcast(env, descP, eVal);
+ break;
+#endif
+
+#if defined(SO_DEBUG)
+ case SOCKET_OPT_SOCK_DEBUG:
+ result = nsetopt_lvl_sock_debug(env, descP, eVal);
+ break;
+#endif
+
+#if defined(SO_DONTROUTE)
+ case SOCKET_OPT_SOCK_DONTROUTE:
+ result = nsetopt_lvl_sock_dontroute(env, descP, eVal);
+ break;
+#endif
+
+#if defined(SO_KEEPALIVE)
+ case SOCKET_OPT_SOCK_KEEPALIVE:
+ result = nsetopt_lvl_sock_keepalive(env, descP, eVal);
+ break;
+#endif
+
+#if defined(SO_LINGER)
+ case SOCKET_OPT_SOCK_LINGER:
+ result = nsetopt_lvl_sock_linger(env, descP, eVal);
+ break;
+#endif
+
+#if defined(SO_PEEK_OFF)
+ case SOCKET_OPT_SOCK_PEEK_OFF:
+ result = nsetopt_lvl_sock_peek_off(env, descP, eVal);
+ break;
+#endif
+
+#if defined(SO_OOBINLINE)
+ case SOCKET_OPT_SOCK_OOBINLINE:
+ result = nsetopt_lvl_sock_oobinline(env, descP, eVal);
+ break;
+#endif
+
+#if defined(SO_PRIORITY)
+ case SOCKET_OPT_SOCK_PRIORITY:
+ result = nsetopt_lvl_sock_priority(env, descP, eVal);
+ break;
+#endif
+
+#if defined(SO_RCVBUF)
+ case SOCKET_OPT_SOCK_RCVBUF:
+ result = nsetopt_lvl_sock_rcvbuf(env, descP, eVal);
+ break;
+#endif
+
+#if defined(SO_RCVLOWAT)
+ case SOCKET_OPT_SOCK_RCVLOWAT:
+ result = nsetopt_lvl_sock_rcvlowat(env, descP, eVal);
+ break;
+#endif
+
+#if defined(SO_RCVTIMEO)
+ case SOCKET_OPT_SOCK_RCVTIMEO:
+ result = nsetopt_lvl_sock_rcvtimeo(env, descP, eVal);
+ break;
+#endif
+
+#if defined(SO_REUSEADDR)
+ case SOCKET_OPT_SOCK_REUSEADDR:
+ result = nsetopt_lvl_sock_reuseaddr(env, descP, eVal);
+ break;
+#endif
+
+#if defined(SO_REUSEPORT)
+ case SOCKET_OPT_SOCK_REUSEPORT:
+ result = nsetopt_lvl_sock_reuseport(env, descP, eVal);
+ break;
+#endif
+
+#if defined(SO_SNDBUF)
+ case SOCKET_OPT_SOCK_SNDBUF:
+ result = nsetopt_lvl_sock_sndbuf(env, descP, eVal);
+ break;
+#endif
+
+#if defined(SO_SNDLOWAT)
+ case SOCKET_OPT_SOCK_SNDLOWAT:
+ result = nsetopt_lvl_sock_sndlowat(env, descP, eVal);
+ break;
+#endif
+
+#if defined(SO_SNDTIMEO)
+ case SOCKET_OPT_SOCK_SNDTIMEO:
+ result = nsetopt_lvl_sock_sndtimeo(env, descP, eVal);
+ break;
+#endif
+
+#if defined(SO_TIMESTAMP)
+ case SOCKET_OPT_SOCK_TIMESTAMP:
+ result = nsetopt_lvl_sock_timestamp(env, descP, eVal);
+ break;
+#endif
+
+ default:
+ SSDBG( descP,
+ ("SOCKET", "nsetopt_lvl_socket -> unknown opt (%d)\r\n", eOpt) );
+ result = esock_make_error(env, esock_atom_einval);
+ break;
+ }
+
+ SSDBG( descP,
+ ("SOCKET", "nsetopt_lvl_socket -> done when"
+ "\r\n result: %T"
+ "\r\n", result) );
+
+ return result;
+}
+
+
+#if defined(SO_BINDTODEVICE)
+static
+ERL_NIF_TERM nsetopt_lvl_sock_bindtodevice(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+ return nsetopt_str_opt(env, descP,
+ SOL_SOCKET, SO_BROADCAST,
+ IFNAMSIZ, eVal);
+}
+#endif
+
+
+#if defined(SO_BROADCAST)
+static
+ERL_NIF_TERM nsetopt_lvl_sock_broadcast(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+ return nsetopt_bool_opt(env, descP, SOL_SOCKET, SO_BROADCAST, eVal);
+}
+#endif
+
+
+#if defined(SO_DEBUG)
+static
+ERL_NIF_TERM nsetopt_lvl_sock_debug(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+ return nsetopt_int_opt(env, descP, SOL_SOCKET, SO_DEBUG, eVal);
+}
+#endif
+
+
+#if defined(SO_DONTROUTE)
+static
+ERL_NIF_TERM nsetopt_lvl_sock_dontroute(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+ return nsetopt_bool_opt(env, descP, SOL_SOCKET, SO_DONTROUTE, eVal);
+}
+#endif
+
+
+#if defined(SO_KEEPALIVE)
+static
+ERL_NIF_TERM nsetopt_lvl_sock_keepalive(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+ return nsetopt_bool_opt(env, descP, SOL_SOCKET, SO_KEEPALIVE, eVal);
+}
+#endif
+
+
+#if defined(SO_LINGER)
+static
+ERL_NIF_TERM nsetopt_lvl_sock_linger(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+ ERL_NIF_TERM result;
+ struct linger val;
+
+ if (decode_sock_linger(env, eVal, &val)) {
+ int optLen = sizeof(val);
+ int res = socket_setopt(descP->sock, SOL_SOCKET, SO_LINGER,
+ (void*) &val, optLen);
+ if (res != 0)
+ result = esock_make_error_errno(env, sock_errno());
+ else
+ result = esock_atom_ok;
+ } else {
+ result = esock_make_error(env, esock_atom_einval);
+ }
+
+ return result;
+}
+#endif
+
+
+#if defined(SO_OOBINLINE)
+static
+ERL_NIF_TERM nsetopt_lvl_sock_oobinline(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+ return nsetopt_bool_opt(env, descP, SOL_SOCKET, SO_OOBINLINE, eVal);
+}
+#endif
+
+
+#if defined(SO_PEEK_OFF)
+static
+ERL_NIF_TERM nsetopt_lvl_sock_peek_off(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+ return nsetopt_int_opt(env, descP, SOL_SOCKET, SO_PEEK_OFF, eVal);
+}
+#endif
+
+
+#if defined(SO_PRIORITY)
+static
+ERL_NIF_TERM nsetopt_lvl_sock_priority(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+ return nsetopt_int_opt(env, descP, SOL_SOCKET, SO_PRIORITY, eVal);
+}
+#endif
+
+
+#if defined(SO_RCVBUF)
+static
+ERL_NIF_TERM nsetopt_lvl_sock_rcvbuf(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+ return nsetopt_int_opt(env, descP, SOL_SOCKET, SO_RCVBUF, eVal);
+}
+#endif
+
+
+#if defined(SO_RCVLOWAT)
+static
+ERL_NIF_TERM nsetopt_lvl_sock_rcvlowat(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+ return nsetopt_int_opt(env, descP, SOL_SOCKET, SO_RCVLOWAT, eVal);
+}
+#endif
+
+
+#if defined(SO_RCVTIMEO)
+static
+ERL_NIF_TERM nsetopt_lvl_sock_rcvtimeo(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+ return nsetopt_timeval_opt(env, descP, SOL_SOCKET, SO_RCVTIMEO, eVal);
+}
+#endif
+
+
+#if defined(SO_REUSEADDR)
+static
+ERL_NIF_TERM nsetopt_lvl_sock_reuseaddr(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+ return nsetopt_bool_opt(env, descP, SOL_SOCKET, SO_REUSEADDR, eVal);
+}
+#endif
+
+
+#if defined(SO_REUSEPORT)
+static
+ERL_NIF_TERM nsetopt_lvl_sock_reuseport(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+ return nsetopt_bool_opt(env, descP, SOL_SOCKET, SO_REUSEPORT, eVal);
+}
+#endif
+
+
+#if defined(SO_SNDBUF)
+static
+ERL_NIF_TERM nsetopt_lvl_sock_sndbuf(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+ return nsetopt_int_opt(env, descP, SOL_SOCKET, SO_SNDBUF, eVal);
+}
+#endif
+
+
+#if defined(SO_SNDLOWAT)
+static
+ERL_NIF_TERM nsetopt_lvl_sock_sndlowat(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+ return nsetopt_int_opt(env, descP, SOL_SOCKET, SO_SNDLOWAT, eVal);
+}
+#endif
+
+
+#if defined(SO_SNDTIMEO)
+static
+ERL_NIF_TERM nsetopt_lvl_sock_sndtimeo(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+ SSDBG( descP,
+ ("SOCKET", "nsetopt_lvl_sock_sndtimeo -> entry with"
+ "\r\n eVal: %T"
+ "\r\n", eVal) );
+
+ return nsetopt_timeval_opt(env, descP, SOL_SOCKET, SO_SNDTIMEO, eVal);
+}
+#endif
+
+
+#if defined(SO_TIMESTAMP)
+static
+ERL_NIF_TERM nsetopt_lvl_sock_timestamp(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+ return nsetopt_bool_opt(env, descP, SOL_SOCKET, SO_TIMESTAMP, eVal);
+}
+#endif
+
+
+
+/* nsetopt_lvl_ip - Level *IP* option(s)
+ */
+static
+ERL_NIF_TERM nsetopt_lvl_ip(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ int eOpt,
+ ERL_NIF_TERM eVal)
+{
+ ERL_NIF_TERM result;
+
+ SSDBG( descP,
+ ("SOCKET", "nsetopt_lvl_ip -> entry with"
+ "\r\n opt: %d"
+ "\r\n", eOpt) );
+
+ switch (eOpt) {
+#if defined(IP_ADD_MEMBERSHIP)
+ case SOCKET_OPT_IP_ADD_MEMBERSHIP:
+ result = nsetopt_lvl_ip_add_membership(env, descP, eVal);
+ break;
+#endif
+
+#if defined(IP_ADD_SOURCE_MEMBERSHIP)
+ case SOCKET_OPT_IP_ADD_SOURCE_MEMBERSHIP:
+ result = nsetopt_lvl_ip_add_source_membership(env, descP, eVal);
+ break;
+#endif
+
+#if defined(IP_BLOCK_SOURCE)
+ case SOCKET_OPT_IP_BLOCK_SOURCE:
+ result = nsetopt_lvl_ip_block_source(env, descP, eVal);
+ break;
+#endif
+
+#if defined(IP_DROP_MEMBERSHIP)
+ case SOCKET_OPT_IP_DROP_MEMBERSHIP:
+ result = nsetopt_lvl_ip_drop_membership(env, descP, eVal);
+ break;
+#endif
+
+#if defined(IP_DROP_SOURCE_MEMBERSHIP)
+ case SOCKET_OPT_IP_DROP_SOURCE_MEMBERSHIP:
+ result = nsetopt_lvl_ip_drop_source_membership(env, descP, eVal);
+ break;
+#endif
+
+#if defined(IP_FREEBIND)
+ case SOCKET_OPT_IP_FREEBIND:
+ result = nsetopt_lvl_ip_freebind(env, descP, eVal);
+ break;
+#endif
+
+#if defined(IP_HDRINCL)
+ case SOCKET_OPT_IP_HDRINCL:
+ result = nsetopt_lvl_ip_hdrincl(env, descP, eVal);
+ break;
+#endif
+
+#if defined(IP_MINTTL)
+ case SOCKET_OPT_IP_MINTTL:
+ result = nsetopt_lvl_ip_minttl(env, descP, eVal);
+ break;
+#endif
+
+#if defined(IP_MSFILTER) && defined(IP_MSFILTER_SIZE)
+ case SOCKET_OPT_IP_MSFILTER:
+ result = nsetopt_lvl_ip_msfilter(env, descP, eVal);
+ break;
+#endif
+
+#if defined(IP_MTU_DISCOVER)
+ case SOCKET_OPT_IP_MTU_DISCOVER:
+ result = nsetopt_lvl_ip_mtu_discover(env, descP, eVal);
+ break;
+#endif
+
+#if defined(IP_MULTICAST_ALL)
+ case SOCKET_OPT_IP_MULTICAST_ALL:
+ result = nsetopt_lvl_ip_multicast_all(env, descP, eVal);
+ break;
+#endif
+
+#if defined(IP_MULTICAST_IF)
+ case SOCKET_OPT_IP_MULTICAST_IF:
+ result = nsetopt_lvl_ip_multicast_if(env, descP, eVal);
+ break;
+#endif
+
+#if defined(IP_MULTICAST_LOOP)
+ case SOCKET_OPT_IP_MULTICAST_LOOP:
+ result = nsetopt_lvl_ip_multicast_loop(env, descP, eVal);
+ break;
+#endif
+
+#if defined(IP_MULTICAST_TTL)
+ case SOCKET_OPT_IP_MULTICAST_TTL:
+ result = nsetopt_lvl_ip_multicast_ttl(env, descP, eVal);
+ break;
+#endif
+
+#if defined(IP_NODEFRAG)
+ case SOCKET_OPT_IP_NODEFRAG:
+ result = nsetopt_lvl_ip_nodefrag(env, descP, eVal);
+ break;
+#endif
+
+#if defined(IP_PKTINFO)
+ case SOCKET_OPT_IP_PKTINFO:
+ result = nsetopt_lvl_ip_pktinfo(env, descP, eVal);
+ break;
+#endif
+
+#if defined(IP_RECVDSTADDR)
+ case SOCKET_OPT_IP_RECVDSTADDR:
+ result = nsetopt_lvl_ip_recvdstaddr(env, descP, eVal);
+ break;
+#endif
+
+#if defined(IP_RECVERR)
+ case SOCKET_OPT_IP_RECVERR:
+ result = nsetopt_lvl_ip_recverr(env, descP, eVal);
+ break;
+#endif
+
+#if defined(IP_RECVIF)
+ case SOCKET_OPT_IP_RECVIF:
+ result = nsetopt_lvl_ip_recvif(env, descP, eVal);
+ break;
+#endif
+
+#if defined(IP_RECVOPTS)
+ case SOCKET_OPT_IP_RECVOPTS:
+ result = nsetopt_lvl_ip_recvopts(env, descP, eVal);
+ break;
+#endif
+
+#if defined(IP_RECVORIGDSTADDR)
+ case SOCKET_OPT_IP_RECVORIGDSTADDR:
+ result = nsetopt_lvl_ip_recvorigdstaddr(env, descP, eVal);
+ break;
+#endif
+
+#if defined(IP_RECVTOS)
+ case SOCKET_OPT_IP_RECVTOS:
+ result = nsetopt_lvl_ip_recvtos(env, descP, eVal);
+ break;
+#endif
+
+#if defined(IP_RECVTTL)
+ case SOCKET_OPT_IP_RECVTTL:
+ result = nsetopt_lvl_ip_recvttl(env, descP, eVal);
+ break;
+#endif
+
+#if defined(IP_RETOPTS)
+ case SOCKET_OPT_IP_RETOPTS:
+ result = nsetopt_lvl_ip_retopts(env, descP, eVal);
+ break;
+#endif
+
+#if defined(IP_ROUTER_ALERT)
+ case SOCKET_OPT_IP_ROUTER_ALERT:
+ result = nsetopt_lvl_ip_router_alert(env, descP, eVal);
+ break;
+#endif
+
+#if defined(IP_SENDSRCADDR)
+ case SOCKET_OPT_IP_SENDSRCADDR:
+ result = nsetopt_lvl_ip_sendsrcaddr(env, descP, eVal);
+ break;
+#endif
+
+#if defined(IP_TOS)
+ case SOCKET_OPT_IP_TOS:
+ result = nsetopt_lvl_ip_tos(env, descP, eVal);
+ break;
+#endif
+
+#if defined(IP_TRANSPARENT)
+ case SOCKET_OPT_IP_TRANSPARENT:
+ result = nsetopt_lvl_ip_transparent(env, descP, eVal);
+ break;
+#endif
+
+#if defined(IP_TTL)
+ case SOCKET_OPT_IP_TTL:
+ result = nsetopt_lvl_ip_ttl(env, descP, eVal);
+ break;
+#endif
+
+#if defined(IP_UNBLOCK_SOURCE)
+ case SOCKET_OPT_IP_UNBLOCK_SOURCE:
+ result = nsetopt_lvl_ip_unblock_source(env, descP, eVal);
+ break;
+#endif
+
+ default:
+ SSDBG( descP, ("SOCKET", "nsetopt_lvl_ip -> unknown opt (%d)\r\n", eOpt) );
+ result = esock_make_error(env, esock_atom_einval);
+ break;
+ }
+
+ SSDBG( descP,
+ ("SOCKET", "nsetopt_lvl_ip -> done when"
+ "\r\n result: %T"
+ "\r\n", result) );
+
+ return result;
+}
+
+
+/* nsetopt_lvl_ip_add_membership - Level IP ADD_MEMBERSHIP option
+ *
+ * The value is a map with two attributes: multiaddr and interface.
+ * The attribute 'multiaddr' is always a 4-tuple (IPv4 address).
+ * The attribute 'interface' is either the atom 'any' or a 4-tuple
+ * (IPv4 address).
+ */
+#if defined(IP_ADD_MEMBERSHIP)
+static
+ERL_NIF_TERM nsetopt_lvl_ip_add_membership(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+ return nsetopt_lvl_ip_update_membership(env, descP, eVal, IP_ADD_MEMBERSHIP);
+}
+#endif
+
+
+/* nsetopt_lvl_ip_add_source_membership - Level IP ADD_SOURCE_MEMBERSHIP option
+ *
+ * The value is a map with three attributes: multiaddr, interface and
+ * sourceaddr.
+ * The attribute 'multiaddr' is always a 4-tuple (IPv4 address).
+ * The attribute 'interface' is always a 4-tuple (IPv4 address).
+ * The attribute 'sourceaddr' is always a 4-tuple (IPv4 address).
+ * (IPv4 address).
+ */
+#if defined(IP_ADD_SOURCE_MEMBERSHIP)
+static
+ERL_NIF_TERM nsetopt_lvl_ip_add_source_membership(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+ return nsetopt_lvl_ip_update_source(env, descP, eVal,
+ IP_ADD_SOURCE_MEMBERSHIP);
+}
+#endif
+
+
+/* nsetopt_lvl_ip_block_source - Level IP BLOCK_SOURCE option
+ *
+ * The value is a map with three attributes: multiaddr, interface and
+ * sourceaddr.
+ * The attribute 'multiaddr' is always a 4-tuple (IPv4 address).
+ * The attribute 'interface' is always a 4-tuple (IPv4 address).
+ * The attribute 'sourceaddr' is always a 4-tuple (IPv4 address).
+ * (IPv4 address).
+ */
+#if defined(IP_BLOCK_SOURCE)
+static
+ERL_NIF_TERM nsetopt_lvl_ip_block_source(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+ return nsetopt_lvl_ip_update_source(env, descP, eVal, IP_BLOCK_SOURCE);
+}
+#endif
+
+
+/* nsetopt_lvl_ip_drop_membership - Level IP DROP_MEMBERSHIP option
+ *
+ * The value is a map with two attributes: multiaddr and interface.
+ * The attribute 'multiaddr' is always a 4-tuple (IPv4 address).
+ * The attribute 'interface' is either the atom 'any' or a 4-tuple
+ * (IPv4 address).
+ *
+ * We should really have a common function with add_membership,
+ * since the code is virtually identical (except for the option
+ * value).
+ */
+#if defined(IP_DROP_MEMBERSHIP)
+static
+ERL_NIF_TERM nsetopt_lvl_ip_drop_membership(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+ return nsetopt_lvl_ip_update_membership(env, descP, eVal,
+ IP_DROP_MEMBERSHIP);
+}
+#endif
+
+
+
+/* nsetopt_lvl_ip_drop_source_membership - Level IP DROP_SOURCE_MEMBERSHIP option
+ *
+ * The value is a map with three attributes: multiaddr, interface and
+ * sourceaddr.
+ * The attribute 'multiaddr' is always a 4-tuple (IPv4 address).
+ * The attribute 'interface' is always a 4-tuple (IPv4 address).
+ * The attribute 'sourceaddr' is always a 4-tuple (IPv4 address).
+ * (IPv4 address).
+ */
+#if defined(IP_DROP_SOURCE_MEMBERSHIP)
+static
+ERL_NIF_TERM nsetopt_lvl_ip_drop_source_membership(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+ return nsetopt_lvl_ip_update_source(env, descP, eVal,
+ IP_DROP_SOURCE_MEMBERSHIP);
+}
+#endif
+
+
+
+/* nsetopt_lvl_ip_freebind - Level IP FREEBIND option
+ */
+#if defined(IP_FREEBIND)
+static
+ERL_NIF_TERM nsetopt_lvl_ip_freebind(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+#if defined(SOL_IP)
+ int level = SOL_IP;
+#else
+ int level = IPPROTO_IP;
+#endif
+
+ return nsetopt_bool_opt(env, descP, level, IP_FREEBIND, eVal);
+}
+#endif
+
+
+
+/* nsetopt_lvl_ip_hdrincl - Level IP HDRINCL option
+ */
+#if defined(IP_HDRINCL)
+static
+ERL_NIF_TERM nsetopt_lvl_ip_hdrincl(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+#if defined(SOL_IP)
+ int level = SOL_IP;
+#else
+ int level = IPPROTO_IP;
+#endif
+
+ return nsetopt_bool_opt(env, descP, level, IP_HDRINCL, eVal);
+}
+#endif
+
+
+
+/* nsetopt_lvl_ip_minttl - Level IP MINTTL option
+ */
+#if defined(IP_MINTTL)
+static
+ERL_NIF_TERM nsetopt_lvl_ip_minttl(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+#if defined(SOL_IP)
+ int level = SOL_IP;
+#else
+ int level = IPPROTO_IP;
+#endif
+
+ return nsetopt_int_opt(env, descP, level, IP_MINTTL, eVal);
+}
+#endif
+
+
+
+/* nsetopt_lvl_ip_msfilter - Level IP MSFILTER option
+ *
+ * The value can be *either* the atom 'null' or a map of type ip_msfilter().
+ */
+#if defined(IP_MSFILTER) && defined(IP_MSFILTER_SIZE)
+static
+ERL_NIF_TERM nsetopt_lvl_ip_msfilter(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+ ERL_NIF_TERM result;
+
+ if (COMPARE(eVal, atom_null) == 0) {
+ return nsetopt_lvl_ip_msfilter_set(env, descP->sock, NULL, 0);
+ } else {
+ struct ip_msfilter* msfP;
+ Uint32 msfSz;
+ ERL_NIF_TERM eMultiAddr, eInterface, eFMode, eSList, elem, tail;
+ size_t sz;
+ unsigned int slistLen, idx;
+
+ if (!IS_MAP(env, eVal))
+ return esock_make_error(env, esock_atom_einval);
+
+ // It must have atleast four attributes
+ if (!enif_get_map_size(env, eVal, &sz) || (sz < 4))
+ return esock_make_error(env, esock_atom_einval);
+
+ if (!GET_MAP_VAL(env, eVal, atom_multiaddr, &eMultiAddr))
+ return esock_make_error(env, esock_atom_einval);
+
+ if (!GET_MAP_VAL(env, eVal, atom_interface, &eInterface))
+ return esock_make_error(env, esock_atom_einval);
+
+ if (!GET_MAP_VAL(env, eVal, atom_mode, &eFMode))
+ return esock_make_error(env, esock_atom_einval);
+
+ if (!GET_MAP_VAL(env, eVal, atom_slist, &eSList))
+ return esock_make_error(env, esock_atom_einval);
+
+ /* We start (decoding) with the slist, since without it we don't
+ * really know how much (memory) to allocate.
+ */
+ if (!GET_LIST_LEN(env, eSList, &slistLen))
+ return esock_make_error(env, esock_atom_einval);
+
+ msfSz = IP_MSFILTER_SIZE(slistLen);
+ msfP = MALLOC(msfSz);
+
+ if (!esock_decode_ip4_address(env, eMultiAddr, &msfP->imsf_multiaddr)) {
+ FREE(msfP);
+ return esock_make_error(env, esock_atom_einval);
+ }
+
+ if (!esock_decode_ip4_address(env, eInterface, &msfP->imsf_interface)) {
+ FREE(msfP);
+ return esock_make_error(env, esock_atom_einval);
+ }
+
+ if (!decode_ip_msfilter_mode(env, eFMode, &msfP->imsf_fmode)) {
+ FREE(msfP);
+ return esock_make_error(env, esock_atom_einval);
+ }
+
+ /* And finally, extract the source addresses */
+ msfP->imsf_numsrc = slistLen;
+ for (idx = 0; idx < slistLen; idx++) {
+ if (GET_LIST_ELEM(env, eSList, &elem, &tail)) {
+ if (!esock_decode_ip4_address(env, elem, &msfP->imsf_slist[idx])) {
+ FREE(msfP);
+ return esock_make_error(env, esock_atom_einval);
+ } else {
+ eSList = tail;
+ }
+ }
+ }
+
+ /* And now, finally, set the option */
+ result = nsetopt_lvl_ip_msfilter_set(env, descP->sock, msfP, msfSz);
+ FREE(msfP);
+ return result;
+ }
+
+}
+
+
+static
+BOOLEAN_T decode_ip_msfilter_mode(ErlNifEnv* env,
+ ERL_NIF_TERM eVal,
+ Uint32* mode)
+{
+ BOOLEAN_T result;
+
+ if (COMPARE(eVal, atom_include) == 0) {
+ *mode = MCAST_INCLUDE;
+ result = TRUE;
+ } else if (COMPARE(eVal, atom_exclude) == 0) {
+ *mode = MCAST_EXCLUDE;
+ result = TRUE;
+ } else {
+ result = FALSE;
+ }
+
+ return result;
+}
+
+
+static
+ERL_NIF_TERM nsetopt_lvl_ip_msfilter_set(ErlNifEnv* env,
+ SOCKET sock,
+ struct ip_msfilter* msfP,
+ SOCKLEN_T optLen)
+{
+ ERL_NIF_TERM result;
+ int res;
+#if defined(SOL_IP)
+ int level = SOL_IP;
+#else
+ int level = IPPROTO_IP;
+#endif
+
+ res = socket_setopt(sock, level, IP_MSFILTER, (void*) msfP, optLen);
+ if (res != 0)
+ result = esock_make_error_errno(env, sock_errno());
+ else
+ result = esock_atom_ok;
+
+ return result;
+}
+#endif // IP_MSFILTER
+
+
+
+/* nsetopt_lvl_ip_mtu_discover - Level IP MTU_DISCOVER option
+ *
+ * The value is an atom of the type ip_pmtudisc().
+ */
+#if defined(IP_MTU_DISCOVER)
+static
+ERL_NIF_TERM nsetopt_lvl_ip_mtu_discover(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+ ERL_NIF_TERM result;
+ int val;
+ char* xres;
+ int res;
+#if defined(SOL_IP)
+ int level = SOL_IP;
+#else
+ int level = IPPROTO_IP;
+#endif
+
+ if ((xres = decode_ip_pmtudisc(env, eVal, &val)) != NULL) {
+
+ result = esock_make_error_str(env, xres);
+
+ } else {
+
+ res = socket_setopt(descP->sock, level, IP_MTU_DISCOVER,
+ &val, sizeof(val));
+
+ if (res != 0)
+ result = esock_make_error_errno(env, sock_errno());
+ else
+ result = esock_atom_ok;
+
+ }
+
+ return result;
+}
+#endif
+
+
+/* nsetopt_lvl_ip_multicast_all - Level IP MULTICAST_ALL option
+ */
+#if defined(IP_MULTICAST_ALL)
+static
+ERL_NIF_TERM nsetopt_lvl_ip_multicast_all(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+#if defined(SOL_IP)
+ int level = SOL_IP;
+#else
+ int level = IPPROTO_IP;
+#endif
+
+ return nsetopt_bool_opt(env, descP, level, IP_MULTICAST_ALL, eVal);
+}
+#endif
+
+
+/* nsetopt_lvl_ip_multicast_if - Level IP MULTICAST_IF option
+ *
+ * The value is either the atom 'any' or a 4-tuple.
+ */
+#if defined(IP_MULTICAST_IF)
+static
+ERL_NIF_TERM nsetopt_lvl_ip_multicast_if(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+ ERL_NIF_TERM result;
+ struct in_addr ifAddr;
+ char* xres;
+ int res;
+#if defined(SOL_IP)
+ int level = SOL_IP;
+#else
+ int level = IPPROTO_IP;
+#endif
+
+ if ((xres = esock_decode_ip4_address(env, eVal, &ifAddr)) != NULL) {
+ result = esock_make_error_str(env, xres);
+ } else {
+
+ res = socket_setopt(descP->sock, level, IP_MULTICAST_LOOP,
+ &ifAddr, sizeof(ifAddr));
+
+ if (res != 0)
+ result = esock_make_error_errno(env, sock_errno());
+ else
+ result = esock_atom_ok;
+
+ }
+
+ return result;
+}
+#endif
+
+
+/* nsetopt_lvl_ip_multicast_loop - Level IP MULTICAST_LOOP option
+ */
+#if defined(IP_MULTICAST_LOOP)
+static
+ERL_NIF_TERM nsetopt_lvl_ip_multicast_loop(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+#if defined(SOL_IP)
+ int level = SOL_IP;
+#else
+ int level = IPPROTO_IP;
+#endif
+
+ return nsetopt_bool_opt(env, descP, level, IP_MULTICAST_LOOP, eVal);
+}
+#endif
+
+
+/* nsetopt_lvl_ip_multicast_ttl - Level IP MULTICAST_TTL option
+ */
+#if defined(IP_MULTICAST_TTL)
+static
+ERL_NIF_TERM nsetopt_lvl_ip_multicast_ttl(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+#if defined(SOL_IP)
+ int level = SOL_IP;
+#else
+ int level = IPPROTO_IP;
+#endif
+
+ return nsetopt_int_opt(env, descP, level, IP_MULTICAST_TTL, eVal);
+}
+#endif
+
+
+/* nsetopt_lvl_ip_nodefrag - Level IP NODEFRAG option
+ */
+#if defined(IP_NODEFRAG)
+static
+ERL_NIF_TERM nsetopt_lvl_ip_nodefrag(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+#if defined(SOL_IP)
+ int level = SOL_IP;
+#else
+ int level = IPPROTO_IP;
+#endif
+
+ return nsetopt_bool_opt(env, descP, level, IP_NODEFRAG, eVal);
+}
+#endif
+
+
+/* nsetopt_lvl_ip_pktinfo - Level IP PKTINFO option
+ */
+#if defined(IP_PKTINFO)
+static
+ERL_NIF_TERM nsetopt_lvl_ip_pktinfo(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+#if defined(SOL_IP)
+ int level = SOL_IP;
+#else
+ int level = IPPROTO_IP;
+#endif
+
+ return nsetopt_bool_opt(env, descP, level, IP_PKTINFO, eVal);
+}
+#endif
+
+
+/* nsetopt_lvl_ip_recvdstaddr - Level IP RECVDSTADDR option
+ */
+#if defined(IP_RECVDSTADDR)
+static
+ERL_NIF_TERM nsetopt_lvl_ip_recvdstaddr(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+#if defined(SOL_IP)
+ int level = SOL_IP;
+#else
+ int level = IPPROTO_IP;
+#endif
+
+ return nsetopt_bool_opt(env, descP, level, IP_RECVDSTADDR, eVal);
+}
+#endif
+
+
+/* nsetopt_lvl_ip_recverr - Level IP RECVERR option
+ */
+#if defined(IP_RECVERR)
+static
+ERL_NIF_TERM nsetopt_lvl_ip_recverr(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+#if defined(SOL_IP)
+ int level = SOL_IP;
+#else
+ int level = IPPROTO_IP;
+#endif
+
+ return nsetopt_bool_opt(env, descP, level, IP_RECVERR, eVal);
+}
+#endif
+
+
+/* nsetopt_lvl_ip_recvif - Level IP RECVIF option
+ */
+#if defined(IP_RECVIF)
+static
+ERL_NIF_TERM nsetopt_lvl_ip_recvif(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+#if defined(SOL_IP)
+ int level = SOL_IP;
+#else
+ int level = IPPROTO_IP;
+#endif
+
+ return nsetopt_bool_opt(env, descP, level, IP_RECVIF, eVal);
+}
+#endif
+
+
+/* nsetopt_lvl_ip_recvopts - Level IP RECVOPTS option
+ */
+#if defined(IP_RECVOPTS)
+static
+ERL_NIF_TERM nsetopt_lvl_ip_recvopts(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+#if defined(SOL_IP)
+ int level = SOL_IP;
+#else
+ int level = IPPROTO_IP;
+#endif
+
+ return nsetopt_bool_opt(env, descP, level, IP_RECVOPTS, eVal);
+}
+#endif
+
+
+/* nsetopt_lvl_ip_recvorigdstaddr - Level IP RECVORIGDSTADDR option
+ */
+#if defined(IP_RECVORIGDSTADDR)
+static
+ERL_NIF_TERM nsetopt_lvl_ip_recvorigdstaddr(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+#if defined(SOL_IP)
+ int level = SOL_IP;
+#else
+ int level = IPPROTO_IP;
+#endif
+
+ return nsetopt_bool_opt(env, descP, level, IP_RECVORIGDSTADDR, eVal);
+}
+#endif
+
+
+/* nsetopt_lvl_ip_recvtos - Level IP RECVTOS option
+ */
+#if defined(IP_RECVTOS)
+static
+ERL_NIF_TERM nsetopt_lvl_ip_recvtos(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+#if defined(SOL_IP)
+ int level = SOL_IP;
+#else
+ int level = IPPROTO_IP;
+#endif
+
+ return nsetopt_bool_opt(env, descP, level, IP_RECVTOS, eVal);
+}
+#endif
+
+
+/* nsetopt_lvl_ip_recvttl - Level IP RECVTTL option
+ */
+#if defined(IP_RECVTTL)
+static
+ERL_NIF_TERM nsetopt_lvl_ip_recvttl(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+#if defined(SOL_IP)
+ int level = SOL_IP;
+#else
+ int level = IPPROTO_IP;
+#endif
+
+ return nsetopt_bool_opt(env, descP, level, IP_RECVTTL, eVal);
+}
+#endif
+
+
+/* nsetopt_lvl_ip_retopts - Level IP RETOPTS option
+ */
+#if defined(IP_RETOPTS)
+static
+ERL_NIF_TERM nsetopt_lvl_ip_retopts(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+#if defined(SOL_IP)
+ int level = SOL_IP;
+#else
+ int level = IPPROTO_IP;
+#endif
+
+ return nsetopt_bool_opt(env, descP, level, IP_RETOPTS, eVal);
+}
+#endif
+
+
+/* nsetopt_lvl_ip_router_alert - Level IP ROUTER_ALERT option
+ */
+#if defined(IP_ROUTER_ALERT)
+static
+ERL_NIF_TERM nsetopt_lvl_ip_router_alert(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+#if defined(SOL_IP)
+ int level = SOL_IP;
+#else
+ int level = IPPROTO_IP;
+#endif
+
+ return nsetopt_int_opt(env, descP, level, IP_ROUTER_ALERT, eVal);
+}
+#endif
+
+
+/* nsetopt_lvl_ip_sendsrcaddr - Level IP SENDSRCADDR option
+ */
+#if defined(IP_SENDSRCADDR)
+static
+ERL_NIF_TERM nsetopt_lvl_ip_sendsrcaddr(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+#if defined(SOL_IP)
+ int level = SOL_IP;
+#else
+ int level = IPPROTO_IP;
+#endif
+
+ return nsetopt_bool_opt(env, descP, level, IP_SENDSRCADDR, eVal);
+}
+#endif
+
+
+/* nsetopt_lvl_ip_tos - Level IP TOS option
+ */
+#if defined(IP_TOS)
+static
+ERL_NIF_TERM nsetopt_lvl_ip_tos(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+#if defined(SOL_IP)
+ int level = SOL_IP;
+#else
+ int level = IPPROTO_IP;
+#endif
+ ERL_NIF_TERM result;
+ int val;
+
+ if (decode_ip_tos(env, eVal, &val)) {
+ int res = socket_setopt(descP->sock, level, IP_TOS, &val, sizeof(val));
+
+ if (res != 0)
+ result = esock_make_error_errno(env, sock_errno());
+ else
+ result = esock_atom_ok;
+
+ } else {
+ result = esock_make_error(env, esock_atom_einval);
+ }
+
+ return result;
+}
+#endif
+
+
+/* nsetopt_lvl_ip_transparent - Level IP TRANSPARENT option
+ */
+#if defined(IP_TRANSPARENT)
+static
+ERL_NIF_TERM nsetopt_lvl_ip_transparent(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+#if defined(SOL_IP)
+ int level = SOL_IP;
+#else
+ int level = IPPROTO_IP;
+#endif
+
+ return nsetopt_bool_opt(env, descP, level, IP_TRANSPARENT, eVal);
+}
+#endif
+
+
+
+/* nsetopt_lvl_ip_ttl - Level IP TTL option
+ */
+#if defined(IP_TTL)
+static
+ERL_NIF_TERM nsetopt_lvl_ip_ttl(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+#if defined(SOL_IP)
+ int level = SOL_IP;
+#else
+ int level = IPPROTO_IP;
+#endif
+
+ return nsetopt_int_opt(env, descP, level, IP_TTL, eVal);
+}
+#endif
+
+
+
+/* nsetopt_lvl_ip_unblock_source - Level IP UNBLOCK_SOURCE option
+ *
+ * The value is a map with three attributes: multiaddr, interface and
+ * sourceaddr.
+ * The attribute 'multiaddr' is always a 4-tuple (IPv4 address).
+ * The attribute 'interface' is always a 4-tuple (IPv4 address).
+ * The attribute 'sourceaddr' is always a 4-tuple (IPv4 address).
+ * (IPv4 address).
+ */
+#if defined(IP_UNBLOCK_SOURCE)
+static
+ERL_NIF_TERM nsetopt_lvl_ip_unblock_source(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+ return nsetopt_lvl_ip_update_source(env, descP, eVal, IP_UNBLOCK_SOURCE);
+}
+#endif
+
+
+
+#if defined(IP_ADD_MEMBERSHIP) || defined(IP_DROP_MEMBERSHIP)
+static
+ERL_NIF_TERM nsetopt_lvl_ip_update_membership(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal,
+ int opt)
+{
+ ERL_NIF_TERM result, eMultiAddr, eInterface;
+ struct ip_mreq mreq;
+ char* xres;
+ int res;
+ size_t sz;
+#if defined(SOL_IP)
+ int level = SOL_IP;
+#else
+ int level = IPPROTO_IP;
+#endif
+
+ // It must be a map
+ if (!IS_MAP(env, eVal))
+ return enif_make_badarg(env);
+
+ // It must have atleast two attributes
+ if (!enif_get_map_size(env, eVal, &sz) || (sz >= 2))
+ return enif_make_badarg(env);
+
+ if (!GET_MAP_VAL(env, eVal, atom_multiaddr, &eMultiAddr))
+ return enif_make_badarg(env);
+
+ if (!GET_MAP_VAL(env, eVal, atom_interface, &eInterface))
+ return enif_make_badarg(env);
+
+ if ((xres = esock_decode_ip4_address(env,
+ eMultiAddr,
+ &mreq.imr_multiaddr)) != NULL)
+ return esock_make_error_str(env, xres);
+
+ if ((xres = esock_decode_ip4_address(env,
+ eInterface,
+ &mreq.imr_interface)) != NULL)
+ return esock_make_error_str(env, xres);
+
+ res = socket_setopt(descP->sock, level, opt, &mreq, sizeof(mreq));
+
+ if (res != 0)
+ result = esock_make_error_errno(env, sock_errno());
+ else
+ result = esock_atom_ok;
+
+ return result;
+}
+#endif
+
+
+#if defined(IP_ADD_SOURCE_MEMBERSHIP) || defined(IP_DROP_SOURCE_MEMBERSHIP) || defined(IP_BLOCK_SOURCE) || defined(IP_UNBLOCK_SOURCE)
+static
+ERL_NIF_TERM nsetopt_lvl_ip_update_source(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal,
+ int opt)
+{
+ ERL_NIF_TERM result, eMultiAddr, eInterface, eSourceAddr;
+ struct ip_mreq_source mreq;
+ char* xres;
+ int res;
+ size_t sz;
+#if defined(SOL_IP)
+ int level = SOL_IP;
+#else
+ int level = IPPROTO_IP;
+#endif
+
+ // It must be a map
+ if (!IS_MAP(env, eVal))
+ return enif_make_badarg(env);
+
+ // It must have atleast three attributes
+ if (!enif_get_map_size(env, eVal, &sz) || (sz >= 3))
+ return enif_make_badarg(env);
+
+ if (!GET_MAP_VAL(env, eVal, atom_multiaddr, &eMultiAddr))
+ return enif_make_badarg(env);
+
+ if (!GET_MAP_VAL(env, eVal, atom_interface, &eInterface))
+ return enif_make_badarg(env);
+
+ if (!GET_MAP_VAL(env, eVal, atom_sourceaddr, &eSourceAddr))
+ return enif_make_badarg(env);
+
+ if ((xres = esock_decode_ip4_address(env,
+ eMultiAddr,
+ &mreq.imr_multiaddr)) != NULL)
+ return esock_make_error_str(env, xres);
+
+ if ((xres = esock_decode_ip4_address(env,
+ eInterface,
+ &mreq.imr_interface)) != NULL)
+ return esock_make_error_str(env, xres);
+
+ if ((xres = esock_decode_ip4_address(env,
+ eSourceAddr,
+ &mreq.imr_sourceaddr)) != NULL)
+ return esock_make_error_str(env, xres);
+
+ res = socket_setopt(descP->sock, level, opt, &mreq, sizeof(mreq));
+
+ if (res != 0)
+ result = esock_make_error_errno(env, sock_errno());
+ else
+ result = esock_atom_ok;
+
+ return result;
+}
+#endif
+
+
+
+/* *** Handling set of socket options for level = ipv6 *** */
+
+/* nsetopt_lvl_ipv6 - Level *IPv6* option(s)
+ */
+#if defined(HAVE_IPV6)
+static
+ERL_NIF_TERM nsetopt_lvl_ipv6(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ int eOpt,
+ ERL_NIF_TERM eVal)
+{
+ ERL_NIF_TERM result;
+
+ SSDBG( descP,
+ ("SOCKET", "nsetopt_lvl_ipv6 -> entry with"
+ "\r\n opt: %d"
+ "\r\n", eOpt) );
+
+ switch (eOpt) {
+#if defined(IPV6_ADDRFORM)
+ case SOCKET_OPT_IPV6_ADDRFORM:
+ result = nsetopt_lvl_ipv6_addrform(env, descP, eVal);
+ break;
+#endif
+
+#if defined(IPV6_ADD_MEMBERSHIP)
+ case SOCKET_OPT_IPV6_ADD_MEMBERSHIP:
+ result = nsetopt_lvl_ipv6_add_membership(env, descP, eVal);
+ break;
+#endif
+
+#if defined(IPV6_AUTHHDR)
+ case SOCKET_OPT_IPV6_AUTHHDR:
+ result = nsetopt_lvl_ipv6_authhdr(env, descP, eVal);
+ break;
+#endif
+
+#if defined(IPV6_DROP_MEMBERSHIP)
+ case SOCKET_OPT_IPV6_DROP_MEMBERSHIP:
+ result = nsetopt_lvl_ipv6_drop_membership(env, descP, eVal);
+ break;
+#endif
+
+#if defined(IPV6_DSTOPTS)
+ case SOCKET_OPT_IPV6_DSTOPTS:
+ result = nsetopt_lvl_ipv6_dstopts(env, descP, eVal);
+ break;
+#endif
+
+#if defined(IPV6_FLOWINFO)
+ case SOCKET_OPT_IPV6_FLOWINFO:
+ result = nsetopt_lvl_ipv6_flowinfo(env, descP, eVal);
+ break;
+#endif
+
+#if defined(IPV6_HOPLIMIT)
+ case SOCKET_OPT_IPV6_HOPLIMIT:
+ result = nsetopt_lvl_ipv6_hoplimit(env, descP, eVal);
+ break;
+#endif
+
+#if defined(IPV6_HOPOPTS)
+ case SOCKET_OPT_IPV6_HOPOPTS:
+ result = nsetopt_lvl_ipv6_hopopts(env, descP, eVal);
+ break;
+#endif
+
+#if defined(IPV6_MTU)
+ case SOCKET_OPT_IPV6_MTU:
+ result = nsetopt_lvl_ipv6_mtu(env, descP, eVal);
+ break;
+#endif
+
+#if defined(IPV6_MTU_DISCOVER)
+ case SOCKET_OPT_IPV6_MTU_DISCOVER:
+ result = nsetopt_lvl_ipv6_mtu_discover(env, descP, eVal);
+ break;
+#endif
+
+#if defined(IPV6_MULTICAST_HOPS)
+ case SOCKET_OPT_IPV6_MULTICAST_HOPS:
+ result = nsetopt_lvl_ipv6_multicast_hops(env, descP, eVal);
+ break;
+#endif
+
+#if defined(IPV6_MULTICAST_IF)
+ case SOCKET_OPT_IPV6_MULTICAST_IF:
+ result = nsetopt_lvl_ipv6_multicast_if(env, descP, eVal);
+ break;
+#endif
+
+#if defined(IPV6_MULTICAST_LOOP)
+ case SOCKET_OPT_IPV6_MULTICAST_LOOP:
+ result = nsetopt_lvl_ipv6_multicast_loop(env, descP, eVal);
+ break;
+#endif
+
+#if defined(IPV6_RECVERR)
+ case SOCKET_OPT_IPV6_RECVERR:
+ result = nsetopt_lvl_ipv6_recverr(env, descP, eVal);
+ break;
+#endif
+
+#if defined(IPV6_RECVPKTINFO) || defined(IPV6_PKTINFO)
+ case SOCKET_OPT_IPV6_RECVPKTINFO:
+ result = nsetopt_lvl_ipv6_recvpktinfo(env, descP, eVal);
+ break;
+#endif
+
+#if defined(IPV6_ROUTER_ALERT)
+ case SOCKET_OPT_IPV6_ROUTER_ALERT:
+ result = nsetopt_lvl_ipv6_router_alert(env, descP, eVal);
+ break;
+#endif
+
+#if defined(IPV6_RTHDR)
+ case SOCKET_OPT_IPV6_RTHDR:
+ result = nsetopt_lvl_ipv6_rthdr(env, descP, eVal);
+ break;
+#endif
+
+#if defined(IPV6_UNICAST_HOPS)
+ case SOCKET_OPT_IPV6_UNICAST_HOPS:
+ result = nsetopt_lvl_ipv6_unicast_hops(env, descP, eVal);
+ break;
+#endif
+
+#if defined(IPV6_V6ONLY)
+ case SOCKET_OPT_IPV6_V6ONLY:
+ result = nsetopt_lvl_ipv6_v6only(env, descP, eVal);
+ break;
+#endif
+
+ default:
+ SSDBG( descP,
+ ("SOCKET", "nsetopt_lvl_ipv6 -> unknown opt (%d)\r\n", eOpt) );
+ result = esock_make_error(env, esock_atom_einval);
+ break;
+ }
+
+ SSDBG( descP,
+ ("SOCKET", "nsetopt_lvl_ipv6 -> done when"
+ "\r\n result: %T"
+ "\r\n", result) );
+
+ return result;
+}
+
+
+#if defined(IPV6_ADDRFORM)
+static
+ERL_NIF_TERM nsetopt_lvl_ipv6_addrform(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+ ERL_NIF_TERM result;
+ int res, edomain, domain;
+
+ SSDBG( descP,
+ ("SOCKET", "nsetopt_lvl_ipv6_addrform -> entry with"
+ "\r\n eVal: %T"
+ "\r\n", eVal) );
+
+ if (!GET_INT(env, eVal, &edomain))
+ return esock_make_error(env, esock_atom_einval);
+
+ SSDBG( descP,
+ ("SOCKET", "nsetopt_lvl_ipv6_addrform -> decode"
+ "\r\n edomain: %d"
+ "\r\n", edomain) );
+
+ if (!edomain2domain(edomain, &domain))
+ return esock_make_error(env, esock_atom_einval);
+
+ SSDBG( descP, ("SOCKET", "nsetopt_lvl_ipv6_addrform -> try set opt to %d\r\n",
+ domain) );
+
+ res = socket_setopt(descP->sock,
+ SOL_IPV6, IPV6_ADDRFORM,
+ &domain, sizeof(domain));
+
+ if (res != 0)
+ result = esock_make_error_errno(env, sock_errno());
+ else
+ result = esock_atom_ok;
+
+ return result;
+}
+#endif
+
+
+#if defined(IPV6_ADD_MEMBERSHIP)
+static
+ERL_NIF_TERM nsetopt_lvl_ipv6_add_membership(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+ return nsetopt_lvl_ipv6_update_membership(env, descP, eVal,
+ IPV6_ADD_MEMBERSHIP);
+}
+#endif
+
+
+#if defined(IPV6_AUTHHDR)
+static
+ERL_NIF_TERM nsetopt_lvl_ipv6_authhdr(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+ return nsetopt_bool_opt(env, descP, SOL_IPV6, IPV6_AUTHHDR, eVal);
+}
+#endif
+
+
+#if defined(IPV6_DROP_MEMBERSHIP)
+static
+ERL_NIF_TERM nsetopt_lvl_ipv6_drop_membership(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+ return nsetopt_lvl_ipv6_update_membership(env, descP, eVal,
+ IPV6_DROP_MEMBERSHIP);
+}
+#endif
+
+
+#if defined(IPV6_DSTOPTS)
+static
+ERL_NIF_TERM nsetopt_lvl_ipv6_dstopts(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+#if defined(SOL_IPV6)
+ int level = SOL_IPV6;
+#else
+ int level = IPPROTO_IPV6;
+#endif
+
+ return nsetopt_bool_opt(env, descP, level, IPV6_DSTOPTS, eVal);
+}
+#endif
+
+
+#if defined(IPV6_FLOWINFO)
+static
+ERL_NIF_TERM nsetopt_lvl_ipv6_flowinfo(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+#if defined(SOL_IPV6)
+ int level = SOL_IPV6;
+#else
+ int level = IPPROTO_IPV6;
+#endif
+
+ return nsetopt_bool_opt(env, descP, level, IPV6_FLOWINFO, eVal);
+}
+#endif
+
+
+#if defined(IPV6_HOPLIMIT)
+static
+ERL_NIF_TERM nsetopt_lvl_ipv6_hoplimit(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+#if defined(SOL_IPV6)
+ int level = SOL_IPV6;
+#else
+ int level = IPPROTO_IPV6;
+#endif
+
+ return nsetopt_bool_opt(env, descP, level, IPV6_HOPLIMIT, eVal);
+}
+#endif
+
+
+#if defined(IPV6_HOPOPTS)
+static
+ERL_NIF_TERM nsetopt_lvl_ipv6_hopopts(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+#if defined(SOL_IPV6)
+ int level = SOL_IPV6;
+#else
+ int level = IPPROTO_IPV6;
+#endif
+
+ return nsetopt_bool_opt(env, descP, level, IPV6_HOPOPTS, eVal);
+}
+#endif
+
+
+#if defined(IPV6_MTU)
+static
+ERL_NIF_TERM nsetopt_lvl_ipv6_mtu(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+#if defined(SOL_IPV6)
+ int level = SOL_IPV6;
+#else
+ int level = IPPROTO_IPV6;
+#endif
+
+ return nsetopt_int_opt(env, descP, level, IPV6_MTU, eVal);
+}
+#endif
+
+
+/* nsetopt_lvl_ipv6_mtu_discover - Level IPv6 MTU_DISCOVER option
+ *
+ * The value is an atom of the type ipv6_pmtudisc().
+ */
+#if defined(IPV6_MTU_DISCOVER)
+static
+ERL_NIF_TERM nsetopt_lvl_ipv6_mtu_discover(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+ ERL_NIF_TERM result;
+ int val;
+ char* xres;
+ int res;
+
+ if ((xres = decode_ipv6_pmtudisc(env, eVal, &val)) != NULL) {
+
+ result = esock_make_error_str(env, xres);
+
+ } else {
+#if defined(SOL_IPV6)
+ int level = SOL_IPV6;
+#else
+ int level = IPPROTO_IPV6;
+#endif
+
+
+ res = socket_setopt(descP->sock, level, IPV6_MTU_DISCOVER,
+ &val, sizeof(val));
+
+ if (res != 0)
+ result = esock_make_error_errno(env, sock_errno());
+ else
+ result = esock_atom_ok;
+
+ }
+
+ return result;
+}
+#endif
+
+
+#if defined(IPV6_MULTICAST_HOPS)
+static
+ERL_NIF_TERM nsetopt_lvl_ipv6_multicast_hops(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+#if defined(SOL_IPV6)
+ int level = SOL_IPV6;
+#else
+ int level = IPPROTO_IPV6;
+#endif
+
+ return nsetopt_int_opt(env, descP, level, IPV6_MULTICAST_HOPS, eVal);
+}
+#endif
+
+
+
+#if defined(IPV6_MULTICAST_IF)
+static
+ERL_NIF_TERM nsetopt_lvl_ipv6_multicast_if(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+#if defined(SOL_IPV6)
+ int level = SOL_IPV6;
+#else
+ int level = IPPROTO_IPV6;
+#endif
+
+ return nsetopt_int_opt(env, descP, level, IPV6_MULTICAST_IF, eVal);
+}
+#endif
+
+
+
+#if defined(IPV6_MULTICAST_LOOP)
+static
+ERL_NIF_TERM nsetopt_lvl_ipv6_multicast_loop(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+#if defined(SOL_IPV6)
+ int level = SOL_IPV6;
+#else
+ int level = IPPROTO_IPV6;
+#endif
+
+ return nsetopt_bool_opt(env, descP, level, IPV6_MULTICAST_LOOP, eVal);
+}
+#endif
+
+
+#if defined(IPV6_RECVERR)
+static
+ERL_NIF_TERM nsetopt_lvl_ipv6_recverr(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+#if defined(SOL_IPV6)
+ int level = SOL_IPV6;
+#else
+ int level = IPPROTO_IPV6;
+#endif
+
+ return nsetopt_bool_opt(env, descP, level, IPV6_RECVERR, eVal);
+}
+#endif
+
+
+#if defined(IPV6_RECVPKTINFO) || defined(IPV6_PKTINFO)
+static
+ERL_NIF_TERM nsetopt_lvl_ipv6_recvpktinfo(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+#if defined(SOL_IPV6)
+ int level = SOL_IPV6;
+#else
+ int level = IPPROTO_IPV6;
+#endif
+#if defined(IPV6_RECVPKTINFO)
+ int opt = IPV6_RECVPKTINFO;
+#else
+ int opt = IPV6_PKTINFO;
+#endif
+
+ return nsetopt_bool_opt(env, descP, level, opt, eVal);
+}
+#endif
+
+
+#if defined(IPV6_ROUTER_ALERT)
+static
+ERL_NIF_TERM nsetopt_lvl_ipv6_router_alert(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+#if defined(SOL_IPV6)
+ int level = SOL_IPV6;
+#else
+ int level = IPPROTO_IPV6;
+#endif
+
+ return nsetopt_int_opt(env, descP, level, IPV6_ROUTER_ALERT, eVal);
+}
+#endif
+
+
+
+#if defined(IPV6_RTHDR)
+static
+ERL_NIF_TERM nsetopt_lvl_ipv6_rthdr(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+#if defined(SOL_IPV6)
+ int level = SOL_IPV6;
+#else
+ int level = IPPROTO_IPV6;
+#endif
+
+ return nsetopt_bool_opt(env, descP, level, IPV6_RTHDR, eVal);
+}
+#endif
+
+
+#if defined(IPV6_UNICAST_HOPS)
+static
+ERL_NIF_TERM nsetopt_lvl_ipv6_unicast_hops(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+#if defined(SOL_IPV6)
+ int level = SOL_IPV6;
+#else
+ int level = IPPROTO_IPV6;
+#endif
+
+ return nsetopt_int_opt(env, descP, level, IPV6_UNICAST_HOPS, eVal);
+}
+#endif
+
+
+
+#if defined(IPV6_V6ONLY)
+static
+ERL_NIF_TERM nsetopt_lvl_ipv6_v6only(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+#if defined(SOL_IPV6)
+ int level = SOL_IPV6;
+#else
+ int level = IPPROTO_IPV6;
+#endif
+
+ return nsetopt_bool_opt(env, descP, level, IPV6_V6ONLY, eVal);
+}
+#endif
+
+
+#if defined(IPV6_ADD_MEMBERSHIP) || defined(IPV6_DROP_MEMBERSHIP)
+static
+ERL_NIF_TERM nsetopt_lvl_ipv6_update_membership(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal,
+ int opt)
+{
+ ERL_NIF_TERM result, eMultiAddr, eInterface;
+ struct ipv6_mreq mreq;
+ char* xres;
+ int res;
+ size_t sz;
+#if defined(SOL_IPV6)
+ int level = SOL_IPV6;
+#else
+ int level = IPPROTO_IPV6;
+#endif
+
+ // It must be a map
+ if (!IS_MAP(env, eVal))
+ return enif_make_badarg(env);
+
+ // It must have atleast two attributes
+ if (!enif_get_map_size(env, eVal, &sz) || (sz >= 2))
+ return enif_make_badarg(env);
+
+ if (!GET_MAP_VAL(env, eVal, atom_multiaddr, &eMultiAddr))
+ return enif_make_badarg(env);
+
+ if (!GET_MAP_VAL(env, eVal, atom_interface, &eInterface))
+ return enif_make_badarg(env);
+
+ if ((xres = esock_decode_ip6_address(env,
+ eMultiAddr,
+ &mreq.ipv6mr_multiaddr)) != NULL)
+ return esock_make_error_str(env, xres);
+
+ if (!GET_UINT(env, eInterface, &mreq.ipv6mr_interface))
+ return esock_make_error(env, esock_atom_einval);
+
+ res = socket_setopt(descP->sock, level, opt, &mreq, sizeof(mreq));
+
+ if (res != 0)
+ result = esock_make_error_errno(env, sock_errno());
+ else
+ result = esock_atom_ok;
+
+ return result;
+}
+#endif
+
+
+
+#endif // defined(HAVE_IPV6)
+
+
+
+/* nsetopt_lvl_tcp - Level *TCP* option(s)
+ */
+static
+ERL_NIF_TERM nsetopt_lvl_tcp(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ int eOpt,
+ ERL_NIF_TERM eVal)
+{
+ ERL_NIF_TERM result;
+
+ SSDBG( descP,
+ ("SOCKET", "nsetopt_lvl_tcp -> entry with"
+ "\r\n opt: %d"
+ "\r\n", eOpt) );
+
+ switch (eOpt) {
+#if defined(TCP_CONGESTION)
+ case SOCKET_OPT_TCP_CONGESTION:
+ result = nsetopt_lvl_tcp_congestion(env, descP, eVal);
+ break;
+#endif
+
+#if defined(TCP_MAXSEG)
+ case SOCKET_OPT_TCP_MAXSEG:
+ result = nsetopt_lvl_tcp_maxseg(env, descP, eVal);
+ break;
+#endif
+
+#if defined(TCP_NODELAY)
+ case SOCKET_OPT_TCP_NODELAY:
+ result = nsetopt_lvl_tcp_nodelay(env, descP, eVal);
+ break;
+#endif
+
+ default:
+ result = esock_make_error(env, esock_atom_einval);
+ break;
+ }
+
+ return result;
+}
+
+
+/* nsetopt_lvl_tcp_congestion - Level TCP CONGESTION option
+ */
+#if defined(TCP_CONGESTION)
+static
+ERL_NIF_TERM nsetopt_lvl_tcp_congestion(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+ int max = SOCKET_OPT_TCP_CONGESTION_NAME_MAX+1;
+
+ return nsetopt_str_opt(env, descP, IPPROTO_TCP, TCP_CONGESTION, max, eVal);
+}
+#endif
+
+
+/* nsetopt_lvl_tcp_maxseg - Level TCP MAXSEG option
+ */
+#if defined(TCP_MAXSEG)
+static
+ERL_NIF_TERM nsetopt_lvl_tcp_maxseg(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+ return nsetopt_int_opt(env, descP, IPPROTO_TCP, TCP_MAXSEG, eVal);
+}
+#endif
+
+
+/* nsetopt_lvl_tcp_nodelay - Level TCP NODELAY option
+ */
+#if defined(TCP_NODELAY)
+static
+ERL_NIF_TERM nsetopt_lvl_tcp_nodelay(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+ return nsetopt_bool_opt(env, descP, IPPROTO_TCP, TCP_NODELAY, eVal);
+}
+#endif
+
+
+
+/* nsetopt_lvl_udp - Level *UDP* option(s)
+ */
+static
+ERL_NIF_TERM nsetopt_lvl_udp(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ int eOpt,
+ ERL_NIF_TERM eVal)
+{
+ ERL_NIF_TERM result;
+
+ SSDBG( descP,
+ ("SOCKET", "nsetopt_lvl_udp -> entry with"
+ "\r\n opt: %d"
+ "\r\n", eOpt) );
+
+ switch (eOpt) {
+#if defined(UDP_CORK)
+ case SOCKET_OPT_UDP_CORK:
+ result = nsetopt_lvl_udp_cork(env, descP, eVal);
+ break;
+#endif
+
+ default:
+ result = esock_make_error(env, esock_atom_einval);
+ break;
+ }
+
+ return result;
+}
+
+
+/* nsetopt_lvl_udp_cork - Level UDP CORK option
+ */
+#if defined(UDP_CORK)
+static
+ERL_NIF_TERM nsetopt_lvl_udp_cork(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+ return nsetopt_bool_opt(env, descP, IPPROTO_UDP, UDP_CORK, eVal);
+}
+#endif
+
+
+
+
+/* nsetopt_lvl_sctp - Level *SCTP* option(s)
+ */
+#if defined(HAVE_SCTP)
+static
+ERL_NIF_TERM nsetopt_lvl_sctp(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ int eOpt,
+ ERL_NIF_TERM eVal)
+{
+ ERL_NIF_TERM result;
+
+ SSDBG( descP,
+ ("SOCKET", "nsetopt_lvl_sctp -> entry with"
+ "\r\n opt: %d"
+ "\r\n", eOpt) );
+
+ switch (eOpt) {
+#if defined(SCTP_ASSOCINFO)
+ case SOCKET_OPT_SCTP_ASSOCINFO:
+ result = nsetopt_lvl_sctp_associnfo(env, descP, eVal);
+ break;
+#endif
+
+#if defined(SCTP_AUTOCLOSE)
+ case SOCKET_OPT_SCTP_AUTOCLOSE:
+ result = nsetopt_lvl_sctp_autoclose(env, descP, eVal);
+ break;
+#endif
+
+#if defined(SCTP_DISABLE_FRAGMENTS)
+ case SOCKET_OPT_SCTP_DISABLE_FRAGMENTS:
+ result = nsetopt_lvl_sctp_disable_fragments(env, descP, eVal);
+ break;
+#endif
+
+#if defined(SCTP_EVENTS)
+ case SOCKET_OPT_SCTP_EVENTS:
+ result = nsetopt_lvl_sctp_events(env, descP, eVal);
+ break;
+#endif
+
+#if defined(SCTP_INITMSG)
+ case SOCKET_OPT_SCTP_INITMSG:
+ result = nsetopt_lvl_sctp_initmsg(env, descP, eVal);
+ break;
+#endif
+
+#if defined(SCTP_MAXSEG)
+ case SOCKET_OPT_SCTP_MAXSEG:
+ result = nsetopt_lvl_sctp_maxseg(env, descP, eVal);
+ break;
+#endif
+
+#if defined(SCTP_NODELAY)
+ case SOCKET_OPT_SCTP_NODELAY:
+ result = nsetopt_lvl_sctp_nodelay(env, descP, eVal);
+ break;
+#endif
+
+#if defined(SCTP_RTOINFO)
+ case SOCKET_OPT_SCTP_RTOINFO:
+ result = nsetopt_lvl_sctp_rtoinfo(env, descP, eVal);
+ break;
+#endif
+
+ default:
+ result = esock_make_error(env, esock_atom_einval);
+ break;
+ }
+
+ return result;
+}
+
+
+/* nsetopt_lvl_sctp_associnfo - Level SCTP ASSOCINFO option
+ */
+#if defined(SCTP_ASSOCINFO)
+static
+ERL_NIF_TERM nsetopt_lvl_sctp_associnfo(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+ ERL_NIF_TERM result;
+ ERL_NIF_TERM eAssocId, eMaxRxt, eNumPeerDests;
+ ERL_NIF_TERM ePeerRWND, eLocalRWND, eCookieLife;
+ struct sctp_assocparams assocParams;
+ int res;
+ size_t sz;
+ unsigned int tmp;
+ Sint32 tmpAssocId;
+
+ SSDBG( descP,
+ ("SOCKET", "nsetopt_lvl_sctp_associnfo -> entry with"
+ "\r\n eVal: %T"
+ "\r\n", eVal) );
+
+ // It must be a map
+ if (!IS_MAP(env, eVal))
+ return esock_make_error(env, esock_atom_einval);
+
+ // It must have atleast ten attributes
+ if (!enif_get_map_size(env, eVal, &sz) || (sz < 6))
+ return esock_make_error(env, esock_atom_einval);
+
+ SSDBG( descP,
+ ("SOCKET", "nsetopt_lvl_sctp_associnfo -> extract attributes\r\n") );
+
+ if (!GET_MAP_VAL(env, eVal, atom_assoc_id, &eAssocId))
+ return esock_make_error(env, esock_atom_einval);
+
+ if (!GET_MAP_VAL(env, eVal, atom_max_rxt, &eMaxRxt))
+ return esock_make_error(env, esock_atom_einval);
+
+ if (!GET_MAP_VAL(env, eVal, atom_num_peer_dests, &eNumPeerDests))
+ return esock_make_error(env, esock_atom_einval);
+
+ if (!GET_MAP_VAL(env, eVal, atom_peer_rwnd, &ePeerRWND))
+ return esock_make_error(env, esock_atom_einval);
+
+ if (!GET_MAP_VAL(env, eVal, atom_local_rwnd, &eLocalRWND))
+ return esock_make_error(env, esock_atom_einval);
+
+ if (!GET_MAP_VAL(env, eVal, atom_cookie_life, &eCookieLife))
+ return esock_make_error(env, esock_atom_einval);
+
+ SSDBG( descP,
+ ("SOCKET", "nsetopt_lvl_sctp_associnfo -> decode attributes\r\n") );
+
+ /* On some platforms the assoc id is typed as an unsigned integer (uint32)
+ * So, to avoid warnings there, we always make an explicit cast...
+ */
+ if (!GET_INT(env, eAssocId, &tmpAssocId))
+ return esock_make_error(env, esock_atom_einval);
+ assocParams.sasoc_assoc_id = (typeof(assocParams.sasoc_assoc_id)) tmpAssocId;
+
+ /*
+ * We should really make sure this is ok in erlang (to ensure that
+ * the values (max-rxt and num-peer-dests) fits in 16-bits).
+ * The value should be a 16-bit unsigned int...
+ * Both sasoc_asocmaxrxt and sasoc_number_peer_destinations.
+ */
+
+ if (!GET_UINT(env, eMaxRxt, &tmp))
+ return esock_make_error(env, esock_atom_einval);
+ assocParams.sasoc_asocmaxrxt = (Uint16) tmp;
+
+ if (!GET_UINT(env, eNumPeerDests, &tmp))
+ return esock_make_error(env, esock_atom_einval);
+ assocParams.sasoc_number_peer_destinations = (Uint16) tmp;
+
+ if (!GET_UINT(env, ePeerRWND, &assocParams.sasoc_peer_rwnd))
+ return esock_make_error(env, esock_atom_einval);
+
+ if (!GET_UINT(env, eLocalRWND, &assocParams.sasoc_local_rwnd))
+ return esock_make_error(env, esock_atom_einval);
+
+ if (!GET_UINT(env, eCookieLife, &assocParams.sasoc_cookie_life))
+ return esock_make_error(env, esock_atom_einval);
+
+ SSDBG( descP,
+ ("SOCKET", "nsetopt_lvl_sctp_associnfo -> set associnfo option\r\n") );
+
+ res = socket_setopt(descP->sock, IPPROTO_SCTP, SCTP_ASSOCINFO,
+ &assocParams, sizeof(assocParams));
+
+ if (res != 0)
+ result = esock_make_error_errno(env, sock_errno());
+ else
+ result = esock_atom_ok;
+
+ SSDBG( descP,
+ ("SOCKET", "nsetopt_lvl_sctp_associnfo -> done with"
+ "\r\n result: %T"
+ "\r\n", result) );
+
+ return result;
+
+}
+#endif
+
+
+/* nsetopt_lvl_sctp_autoclose - Level SCTP AUTOCLOSE option
+ */
+#if defined(SCTP_AUTOCLOSE)
+static
+ERL_NIF_TERM nsetopt_lvl_sctp_autoclose(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+ return nsetopt_int_opt(env, descP, IPPROTO_SCTP, SCTP_AUTOCLOSE, eVal);
+}
+#endif
+
+
+/* nsetopt_lvl_sctp_disable_fragments - Level SCTP DISABLE_FRAGMENTS option
+ */
+#if defined(SCTP_DISABLE_FRAGMENTS)
+static
+ERL_NIF_TERM nsetopt_lvl_sctp_disable_fragments(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+ return nsetopt_bool_opt(env, descP, IPPROTO_SCTP, SCTP_DISABLE_FRAGMENTS, eVal);
+}
+#endif
+
+
+/* nsetopt_lvl_sctp_events - Level SCTP EVENTS option
+ */
+#if defined(SCTP_EVENTS)
+static
+ERL_NIF_TERM nsetopt_lvl_sctp_events(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+ ERL_NIF_TERM result;
+ ERL_NIF_TERM eDataIn, eAssoc, eAddr, eSndFailure;
+ ERL_NIF_TERM ePeerError, eShutdown, ePartialDelivery;
+ ERL_NIF_TERM eAdaptLayer, eAuth;
+#if defined(HAVE_STRUCT_SCTP_EVENT_SUBSCRIBE_SCTP_SENDER_DRY_EVENT)
+ ERL_NIF_TERM eSndDry;
+#endif
+ struct sctp_event_subscribe events;
+ int res;
+ size_t sz;
+
+ SSDBG( descP,
+ ("SOCKET", "nsetopt_lvl_sctp_events -> entry with"
+ "\r\n eVal: %T"
+ "\r\n", eVal) );
+
+ // It must be a map
+ if (!IS_MAP(env, eVal))
+ return esock_make_error(env, esock_atom_einval);
+
+ // It must have atleast ten attributes
+ if (!enif_get_map_size(env, eVal, &sz) || (sz < 10))
+ return esock_make_error(env, esock_atom_einval);
+
+ SSDBG( descP,
+ ("SOCKET", "nsetopt_lvl_sctp_events -> extract attributes\r\n") );
+
+ if (!GET_MAP_VAL(env, eVal, atom_data_in, &eDataIn))
+ return esock_make_error(env, esock_atom_einval);
+
+ if (!GET_MAP_VAL(env, eVal, atom_association, &eAssoc))
+ return esock_make_error(env, esock_atom_einval);
+
+ if (!GET_MAP_VAL(env, eVal, atom_address, &eAddr))
+ return esock_make_error(env, esock_atom_einval);
+
+ if (!GET_MAP_VAL(env, eVal, atom_send_failure, &eSndFailure))
+ return esock_make_error(env, esock_atom_einval);
+
+ if (!GET_MAP_VAL(env, eVal, atom_peer_error, &ePeerError))
+ return esock_make_error(env, esock_atom_einval);
+
+ if (!GET_MAP_VAL(env, eVal, atom_shutdown, &eShutdown))
+ return esock_make_error(env, esock_atom_einval);
+
+ if (!GET_MAP_VAL(env, eVal, atom_partial_delivery, &ePartialDelivery))
+ return esock_make_error(env, esock_atom_einval);
+
+ if (!GET_MAP_VAL(env, eVal, atom_adaptation_layer, &eAdaptLayer))
+ return esock_make_error(env, esock_atom_einval);
+
+#if defined(HAVE_STRUCT_SCTP_EVENT_SUBSCRIBE_SCTP_AUTHENTICATION_EVENT)
+ if (!GET_MAP_VAL(env, eVal, atom_authentication, &eAuth))
+ return esock_make_error(env, esock_atom_einval);
+#endif
+
+#if defined(HAVE_STRUCT_SCTP_EVENT_SUBSCRIBE_SCTP_SENDER_DRY_EVENT)
+ if (!GET_MAP_VAL(env, eVal, atom_sender_dry, &eSndDry))
+ return esock_make_error(env, esock_atom_einval);
+#endif
+
+ SSDBG( descP,
+ ("SOCKET", "nsetopt_lvl_sctp_events -> decode attributes\r\n") );
+
+ events.sctp_data_io_event = esock_decode_bool(eDataIn);
+ events.sctp_association_event = esock_decode_bool(eAssoc);
+ events.sctp_address_event = esock_decode_bool(eAddr);
+ events.sctp_send_failure_event = esock_decode_bool(eSndFailure);
+ events.sctp_peer_error_event = esock_decode_bool(ePeerError);
+ events.sctp_shutdown_event = esock_decode_bool(eShutdown);
+ events.sctp_partial_delivery_event = esock_decode_bool(ePartialDelivery);
+ events.sctp_adaptation_layer_event = esock_decode_bool(eAdaptLayer);
+#if defined(HAVE_STRUCT_SCTP_EVENT_SUBSCRIBE_SCTP_AUTHENTICATION_EVENT)
+ events.sctp_authentication_event = esock_decode_bool(eAuth);
+#endif
+#if defined(HAVE_STRUCT_SCTP_EVENT_SUBSCRIBE_SCTP_SENDER_DRY_EVENT)
+ events.sctp_sender_dry_event = esock_decode_bool(eSndDry);
+#endif
+
+ SSDBG( descP,
+ ("SOCKET", "nsetopt_lvl_sctp_events -> set events option\r\n") );
+
+ res = socket_setopt(descP->sock, IPPROTO_SCTP, SCTP_EVENTS,
+ &events, sizeof(events));
+
+ if (res != 0)
+ result = esock_make_error_errno(env, sock_errno());
+ else
+ result = esock_atom_ok;
+
+ SSDBG( descP,
+ ("SOCKET", "nsetopt_lvl_sctp_events -> done with"
+ "\r\n result: %T"
+ "\r\n", result) );
+
+ return result;
+
+}
+#endif
+
+
+/* nsetopt_lvl_sctp_initmsg - Level SCTP INITMSG option
+ */
+#if defined(SCTP_INITMSG)
+static
+ERL_NIF_TERM nsetopt_lvl_sctp_initmsg(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+ ERL_NIF_TERM result;
+ ERL_NIF_TERM eNumOut, eMaxIn, eMaxAttempts, eMaxInitTO;
+ struct sctp_initmsg initMsg;
+ int res;
+ size_t sz;
+ unsigned int tmp;
+
+ SSDBG( descP,
+ ("SOCKET", "nsetopt_lvl_sctp_initmsg -> entry with"
+ "\r\n eVal: %T"
+ "\r\n", eVal) );
+
+ // It must be a map
+ if (!IS_MAP(env, eVal))
+ return esock_make_error(env, esock_atom_einval);
+
+ // It must have atleast ten attributes
+ if (!enif_get_map_size(env, eVal, &sz) || (sz < 4))
+ return esock_make_error(env, esock_atom_einval);
+
+ SSDBG( descP,
+ ("SOCKET", "nsetopt_lvl_sctp_initmsg -> extract attributes\r\n") );
+
+ if (!GET_MAP_VAL(env, eVal, atom_num_outstreams, &eNumOut))
+ return esock_make_error(env, esock_atom_einval);
+
+ if (!GET_MAP_VAL(env, eVal, atom_max_instreams, &eMaxIn))
+ return esock_make_error(env, esock_atom_einval);
+
+ if (!GET_MAP_VAL(env, eVal, atom_max_attempts, &eMaxAttempts))
+ return esock_make_error(env, esock_atom_einval);
+
+ if (!GET_MAP_VAL(env, eVal, atom_max_init_timeo, &eMaxInitTO))
+ return esock_make_error(env, esock_atom_einval);
+
+ SSDBG( descP,
+ ("SOCKET", "nsetopt_lvl_sctp_initmsg -> decode attributes\r\n") );
+
+ if (!GET_UINT(env, eNumOut, &tmp))
+ return esock_make_error(env, esock_atom_einval);
+ initMsg.sinit_num_ostreams = (Uint16) tmp;
+
+ if (!GET_UINT(env, eMaxIn, &tmp))
+ return esock_make_error(env, esock_atom_einval);
+ initMsg.sinit_max_instreams = (Uint16) tmp;
+
+ if (!GET_UINT(env, eMaxAttempts, &tmp))
+ return esock_make_error(env, esock_atom_einval);
+ initMsg.sinit_max_attempts = (Uint16) tmp;
+
+ if (!GET_UINT(env, eMaxInitTO, &tmp))
+ return esock_make_error(env, esock_atom_einval);
+ initMsg.sinit_max_init_timeo = (Uint16) tmp;
+
+ SSDBG( descP,
+ ("SOCKET", "nsetopt_lvl_sctp_initmsg -> set initmsg option\r\n") );
+
+ res = socket_setopt(descP->sock, IPPROTO_SCTP, SCTP_INITMSG,
+ &initMsg, sizeof(initMsg));
+
+ if (res != 0)
+ result = esock_make_error_errno(env, sock_errno());
+ else
+ result = esock_atom_ok;
+
+ SSDBG( descP,
+ ("SOCKET", "nsetopt_lvl_sctp_initmsg -> done with"
+ "\r\n result: %T"
+ "\r\n", result) );
+
+ return result;
+
+}
+#endif
+
+
+/* nsetopt_lvl_sctp_maxseg - Level SCTP MAXSEG option
+ */
+#if defined(SCTP_MAXSEG)
+static
+ERL_NIF_TERM nsetopt_lvl_sctp_maxseg(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+ return nsetopt_int_opt(env, descP, IPPROTO_SCTP, SCTP_MAXSEG, eVal);
+}
+#endif
+
+
+/* nsetopt_lvl_sctp_nodelay - Level SCTP NODELAY option
+ */
+#if defined(SCTP_NODELAY)
+static
+ERL_NIF_TERM nsetopt_lvl_sctp_nodelay(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+ return nsetopt_bool_opt(env, descP, IPPROTO_SCTP, SCTP_NODELAY, eVal);
+}
+#endif
+
+
+/* nsetopt_lvl_sctp_rtoinfo - Level SCTP RTOINFO option
+ */
+#if defined(SCTP_RTOINFO)
+static
+ERL_NIF_TERM nsetopt_lvl_sctp_rtoinfo(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eVal)
+{
+ ERL_NIF_TERM result;
+ ERL_NIF_TERM eAssocId, eInitial, eMax, eMin;
+ struct sctp_rtoinfo rtoInfo;
+ int res;
+ size_t sz;
+ Sint32 tmpAssocId;
+
+ SSDBG( descP,
+ ("SOCKET", "nsetopt_lvl_sctp_rtoinfo -> entry with"
+ "\r\n eVal: %T"
+ "\r\n", eVal) );
+
+ // It must be a map
+ if (!IS_MAP(env, eVal))
+ return esock_make_error(env, esock_atom_einval);
+
+ // It must have atleast ten attributes
+ if (!enif_get_map_size(env, eVal, &sz) || (sz < 4))
+ return esock_make_error(env, esock_atom_einval);
+
+ SSDBG( descP,
+ ("SOCKET", "nsetopt_lvl_sctp_rtoinfo -> extract attributes\r\n") );
+
+ if (!GET_MAP_VAL(env, eVal, atom_assoc_id, &eAssocId))
+ return esock_make_error(env, esock_atom_einval);
+
+ if (!GET_MAP_VAL(env, eVal, atom_initial, &eInitial))
+ return esock_make_error(env, esock_atom_einval);
+
+ if (!GET_MAP_VAL(env, eVal, atom_max, &eMax))
+ return esock_make_error(env, esock_atom_einval);
+
+ if (!GET_MAP_VAL(env, eVal, atom_min, &eMin))
+ return esock_make_error(env, esock_atom_einval);
+
+ SSDBG( descP,
+ ("SOCKET", "nsetopt_lvl_sctp_rtoinfo -> decode attributes\r\n") );
+
+ /* On some platforms the assoc id is typed as an unsigned integer (uint32)
+ * So, to avoid warnings there, we always make an explicit cast...
+ */
+ if (!GET_INT(env, eAssocId, &tmpAssocId))
+ return esock_make_error(env, esock_atom_einval);
+ rtoInfo.srto_assoc_id = (typeof(rtoInfo.srto_assoc_id)) tmpAssocId;
+
+ if (!GET_UINT(env, eInitial, &rtoInfo.srto_initial))
+ return esock_make_error(env, esock_atom_einval);
+
+ if (!GET_UINT(env, eMax, &rtoInfo.srto_max))
+ return esock_make_error(env, esock_atom_einval);
+
+ if (!GET_UINT(env, eMin, &rtoInfo.srto_min))
+ return esock_make_error(env, esock_atom_einval);
+
+ SSDBG( descP,
+ ("SOCKET", "nsetopt_lvl_sctp_rtoinfo -> set associnfo option\r\n") );
+
+ res = socket_setopt(descP->sock, IPPROTO_SCTP, SCTP_RTOINFO,
+ &rtoInfo, sizeof(rtoInfo));
+
+ if (res != 0)
+ result = esock_make_error_errno(env, sock_errno());
+ else
+ result = esock_atom_ok;
+
+ SSDBG( descP,
+ ("SOCKET", "nsetopt_lvl_sctp_rtoinfo -> done with"
+ "\r\n result: %T"
+ "\r\n", result) );
+
+ return result;
+
+}
+#endif
+
+
+
+#endif // defined(HAVE_SCTP)
+
+
+
+
+/* nsetopt_bool_opt - set an option that has an (integer) bool value
+ */
+static
+ERL_NIF_TERM nsetopt_bool_opt(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ int level,
+ int opt,
+ ERL_NIF_TERM eVal)
+{
+ ERL_NIF_TERM result;
+ BOOLEAN_T val;
+ int ival, res;
+
+ val = esock_decode_bool(eVal);
+
+ ival = (val) ? 1 : 0;
+ res = socket_setopt(descP->sock, level, opt, &ival, sizeof(ival));
+
+ if (res != 0)
+ result = esock_make_error_errno(env, sock_errno());
+ else
+ result = esock_atom_ok;
+
+ return result;
+}
+
+
+/* nsetopt_int_opt - set an option that has an integer value
+ */
+static
+ERL_NIF_TERM nsetopt_int_opt(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ int level,
+ int opt,
+ ERL_NIF_TERM eVal)
+{
+ ERL_NIF_TERM result;
+ int val;
+
+ if (GET_INT(env, eVal, &val)) {
+ int res;
+
+ /*
+ SSDBG( descP,
+ ("SOCKET", "nsetopt_int_opt -> set option"
+ "\r\n opt: %d"
+ "\r\n val: %d"
+ "\r\n", opt, val) );
+ */
+
+ res = socket_setopt(descP->sock, level, opt, &val, sizeof(val));
+
+ if (res != 0)
+ result = esock_make_error_errno(env, sock_errno());
+ else
+ result = esock_atom_ok;
+
+ } else {
+ result = esock_make_error(env, esock_atom_einval);
+ }
+
+ return result;
+}
+
+
+/* nsetopt_str_opt - set an option that has an string value
+ */
+static
+ERL_NIF_TERM nsetopt_str_opt(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ int level,
+ int opt,
+ int max,
+ ERL_NIF_TERM eVal)
+{
+ ERL_NIF_TERM result;
+ char* val = MALLOC(max);
+
+ if (GET_STR(env, eVal, val, max) > 0) {
+ int optLen = strlen(val);
+ int res = socket_setopt(descP->sock, level, opt, &val, optLen);
+
+ if (res != 0)
+ result = esock_make_error_errno(env, sock_errno());
+ else
+ result = esock_atom_ok;
+
+ } else {
+ result = esock_make_error(env, esock_atom_einval);
+ }
+
+ FREE(val);
+
+ return result;
+}
+
+
+/* nsetopt_timeval_opt - set an option that has an (timeval) bool value
+ */
+static
+ERL_NIF_TERM nsetopt_timeval_opt(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ int level,
+ int opt,
+ ERL_NIF_TERM eVal)
+{
+ ERL_NIF_TERM result;
+ struct timeval timeVal;
+ int res;
+ char* xres;
+
+ SSDBG( descP,
+ ("SOCKET", "nsetopt_timeval_opt -> entry with"
+ "\r\n eVal: %T"
+ "\r\n", eVal) );
+
+ if ((xres = esock_decode_timeval(env, eVal, &timeVal)) != NULL)
+ return esock_make_error_str(env, xres);
+
+ SSDBG( descP,
+ ("SOCKET", "nsetopt_timeval_opt -> set timeval option\r\n") );
+
+ res = socket_setopt(descP->sock, level, opt, &timeVal, sizeof(timeVal));
+
+ if (res != 0)
+ result = esock_make_error_errno(env, sock_errno());
+ else
+ result = esock_atom_ok;
+
+ SSDBG( descP,
+ ("SOCKET", "nsetopt_timeval_opt -> done with"
+ "\r\n result: %T"
+ "\r\n", result) );
+
+ return result;
+
+}
+
+
+
+static
+BOOLEAN_T elevel2level(BOOLEAN_T isEncoded,
+ int eLevel,
+ BOOLEAN_T* isOTP,
+ int* level)
+{
+ BOOLEAN_T result;
+
+ if (isEncoded) {
+ switch (eLevel) {
+ case SOCKET_OPT_LEVEL_OTP:
+ *isOTP = TRUE;
+ *level = -1;
+ result = TRUE;
+ break;
+
+ case SOCKET_OPT_LEVEL_SOCKET:
+ *isOTP = FALSE;
+ *level = SOL_SOCKET;
+ result = TRUE;
+ break;
+
+ case SOCKET_OPT_LEVEL_IP:
+ *isOTP = FALSE;
+#if defined(SOL_IP)
+ *level = SOL_IP;
+#else
+ *level = IPPROTO_IP;
+#endif
+ result = TRUE;
+ break;
+
+#if defined(HAVE_IPV6)
+ case SOCKET_OPT_LEVEL_IPV6:
+ *isOTP = FALSE;
+#if defined(SOL_IPV6)
+ *level = SOL_IPV6;
+#else
+ *level = IPPROTO_IPV6;
+#endif
+ result = TRUE;
+ break;
+#endif
+
+ case SOCKET_OPT_LEVEL_TCP:
+ *isOTP = FALSE;
+ *level = IPPROTO_TCP;
+ result = TRUE;
+ break;
+
+ case SOCKET_OPT_LEVEL_UDP:
+ *isOTP = FALSE;
+ *level = IPPROTO_UDP;
+ result = TRUE;
+ break;
+
+#ifdef HAVE_SCTP
+ case SOCKET_OPT_LEVEL_SCTP:
+ *isOTP = FALSE;
+ *level = IPPROTO_SCTP;
+ result = TRUE;
+ break;
+#endif
+
+ default:
+ *isOTP = FALSE;
+ *level = -1;
+ result = FALSE;
+ break;
+ }
+ } else {
+ *isOTP = FALSE;
+ *level = eLevel;
+ result = TRUE;
+ }
+
+ return result;
+}
+
+
+
+/* +++ socket_setopt +++
+ *
+ * <Per H @ Tail-f>
+ * The original code here had problems that possibly
+ * only occur if you abuse it for non-INET sockets, but anyway:
+ * a) If the getsockopt for SO_PRIORITY or IP_TOS failed, the actual
+ * requested setsockopt was never even attempted.
+ * b) If {get,set}sockopt for one of IP_TOS and SO_PRIORITY failed,
+ * but ditto for the other worked and that was actually the requested
+ * option, failure was still reported to erlang.
+ * </Per H @ Tail-f>
+ *
+ * <PaN>
+ * The relations between SO_PRIORITY, TOS and other options
+ * is not what you (or at least I) would expect...:
+ * If TOS is set after priority, priority is zeroed.
+ * If any other option is set after tos, tos might be zeroed.
+ * Therefore, save tos and priority. If something else is set,
+ * restore both after setting, if tos is set, restore only
+ * prio and if prio is set restore none... All to keep the
+ * user feeling socket options are independent.
+ * </PaN>
+ */
+static
+int socket_setopt(int sock, int level, int opt,
+ const void* optVal, const socklen_t optLen)
+{
+ int res;
+
+#if defined(IP_TOS) && defined(SOL_IP) && defined(SO_PRIORITY)
+ int tmpIValPRIO;
+ int tmpIValTOS;
+ int resPRIO;
+ int resTOS;
+ SOCKOPTLEN_T tmpArgSzPRIO = sizeof(tmpIValPRIO);
+ SOCKOPTLEN_T tmpArgSzTOS = sizeof(tmpIValTOS);
+
+ resPRIO = sock_getopt(sock, SOL_SOCKET, SO_PRIORITY,
+ &tmpIValPRIO, &tmpArgSzPRIO);
+ resTOS = sock_getopt(sock, SOL_IP, IP_TOS,
+ &tmpIValTOS, &tmpArgSzTOS);
+
+ res = sock_setopt(sock, level, opt, optVal, optLen);
+ if (res == 0) {
+
+ /* Ok, now we *maybe* need to "maybe" restore PRIO and TOS...
+ * maybe, possibly, ...
+ */
+
+ if (opt != SO_PRIORITY) {
+ if ((opt != IP_TOS) && (resTOS == 0)) {
+ resTOS = sock_setopt(sock, SOL_IP, IP_TOS,
+ (void *) &tmpIValTOS,
+ tmpArgSzTOS);
+ res = resTOS;
+ }
+ if ((res == 0) && (resPRIO == 0)) {
+ resPRIO = sock_setopt(sock, SOL_SOCKET, SO_PRIORITY,
+ &tmpIValPRIO,
+ tmpArgSzPRIO);
+
+ /* Some kernels set a SO_PRIORITY by default
+ * that you are not permitted to reset,
+ * silently ignore this error condition.
+ */
+
+ if ((resPRIO != 0) && (sock_errno() == EPERM)) {
+ res = 0;
+ } else {
+ res = resPRIO;
+ }
+ }
+ }
+ }
+
+#else
+
+ res = sock_setopt(sock, level, opt, optVal, optLen);
+
+#endif
+
+ return res;
+}
+#endif // if !defined(__WIN32__)
+
+
+
+/* ----------------------------------------------------------------------
+ * nif_getopt
+ *
+ * Description:
+ * Get socket option.
+ * Its possible to use a "raw" mode (not encoded). That is, we do not
+ * interpret level and opt. They are passed "as is" to the
+ * getsockopt function call. The value in this case will "copied" as
+ * is and provided to the user in the form of a binary.
+ *
+ * Arguments:
+ * Socket (ref) - Points to the socket descriptor.
+ * IsEncoded - Are the "arguments" encoded or not.
+ * Level - Level of the socket option.
+ * Opt - The socket option.
+ */
+
+static
+ERL_NIF_TERM nif_getopt(ErlNifEnv* env,
+ int argc,
+ const ERL_NIF_TERM argv[])
+{
+#if defined(__WIN32__)
+ return enif_raise_exception(env, MKA(env, "notsup"));
+#else
+ SocketDescriptor* descP;
+ int eLevel, level = -1;
+ ERL_NIF_TERM eIsEncoded, eOpt;
+ BOOLEAN_T isEncoded, isOTP;
+
+ SGDBG( ("SOCKET", "nif_getopt -> entry with argc: %d\r\n", argc) );
+
+ if ((argc != 4) ||
+ !enif_get_resource(env, argv[0], sockets, (void**) &descP) ||
+ !GET_INT(env, argv[2], &eLevel)) {
+ SGDBG( ("SOCKET", "nif_getopt -> failed processing args\r\n") );
+ return enif_make_badarg(env);
+ }
+ eIsEncoded = argv[1];
+ eOpt = argv[3]; // Is "normally" an int, but if raw mode: {Int, ValueSz}
+
+ if (IS_CLOSED(descP) || IS_CLOSING(descP))
+ return esock_make_error(env, atom_closed);
+
+ SSDBG( descP,
+ ("SOCKET", "nif_getopt -> args when sock = %d:"
+ "\r\n Socket: %T"
+ "\r\n eIsEncoded: %T"
+ "\r\n eLevel: %d"
+ "\r\n eOpt: %T"
+ "\r\n", descP->sock, argv[0], eIsEncoded, eLevel, eOpt) );
+
+ isEncoded = esock_decode_bool(eIsEncoded);
+
+ if (!elevel2level(isEncoded, eLevel, &isOTP, &level))
+ return esock_make_error(env, esock_atom_einval);
+
+ return ngetopt(env, descP, isEncoded, isOTP, level, eOpt);
+#endif // if defined(__WIN32__)
+}
+
+
+
+#if !defined(__WIN32__)
+static
+ERL_NIF_TERM ngetopt(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ BOOLEAN_T isEncoded,
+ BOOLEAN_T isOTP,
+ int level,
+ ERL_NIF_TERM eOpt)
+{
+ ERL_NIF_TERM result;
+ int opt;
+
+ SSDBG( descP,
+ ("SOCKET", "ngetopt -> entry with"
+ "\r\n isEncoded: %s"
+ "\r\n isOTP: %s"
+ "\r\n level: %d"
+ "\r\n eOpt: %T"
+ "\r\n", B2S(isEncoded), B2S(isOTP), level, eOpt) );
+
+ if (isOTP) {
+ /* These are not actual socket options,
+ * but options for our implementation.
+ */
+ if (GET_INT(env, eOpt, &opt))
+ result = ngetopt_otp(env, descP, opt);
+ else
+ result = esock_make_error(env, esock_atom_einval);
+ } else if (!isEncoded) {
+ result = ngetopt_native(env, descP, level, eOpt);
+ } else {
+ if (GET_INT(env, eOpt, &opt))
+ result = ngetopt_level(env, descP, level, opt);
+ else
+ result = esock_make_error(env, esock_atom_einval);
+ }
+
+ SSDBG( descP,
+ ("SOCKET", "ngetopt -> done when"
+ "\r\n result: %T"
+ "\r\n", result) );
+
+ return result;
+}
+
+
+
+/* ngetopt_otp - Handle OTP (level) options
+ */
+static
+ERL_NIF_TERM ngetopt_otp(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ int eOpt)
+{
+ ERL_NIF_TERM result;
+
+ SSDBG( descP,
+ ("SOCKET", "ngetopt_otp -> entry with"
+ "\r\n eOpt: %d"
+ "\r\n", eOpt) );
+
+ switch (eOpt) {
+ case SOCKET_OPT_OTP_DEBUG:
+ result = ngetopt_otp_debug(env, descP);
+ break;
+
+ case SOCKET_OPT_OTP_IOW:
+ result = ngetopt_otp_iow(env, descP);
+ break;
+
+ case SOCKET_OPT_OTP_CTRL_PROC:
+ result = ngetopt_otp_ctrl_proc(env, descP);
+ break;
+
+ case SOCKET_OPT_OTP_RCVBUF:
+ result = ngetopt_otp_rcvbuf(env, descP);
+ break;
+
+ case SOCKET_OPT_OTP_RCVCTRLBUF:
+ result = ngetopt_otp_rcvctrlbuf(env, descP);
+ break;
+
+ case SOCKET_OPT_OTP_SNDCTRLBUF:
+ result = ngetopt_otp_sndctrlbuf(env, descP);
+ break;
+
+ case SOCKET_OPT_OTP_FD:
+ result = ngetopt_otp_fd(env, descP);
+ break;
+
+ /* *** INTERNAL *** */
+ case SOCKET_OPT_OTP_DOMAIN:
+ result = ngetopt_otp_domain(env, descP);
+ break;
+
+ case SOCKET_OPT_OTP_TYPE:
+ result = ngetopt_otp_type(env, descP);
+ break;
+
+ case SOCKET_OPT_OTP_PROTOCOL:
+ result = ngetopt_otp_protocol(env, descP);
+ break;
+
+ default:
+ result = esock_make_error(env, esock_atom_einval);
+ break;
+ }
+
+ SSDBG( descP,
+ ("SOCKET", "ngetopt_otp -> done when"
+ "\r\n result: %T"
+ "\r\n", result) );
+
+ return result;
+}
+
+
+/* ngetopt_otp_debug - Handle the OTP (level) debug option
+ */
+static
+ERL_NIF_TERM ngetopt_otp_debug(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+ ERL_NIF_TERM eVal = esock_encode_bool(descP->dbg);
+
+ return esock_make_ok2(env, eVal);
+}
+
+
+/* ngetopt_otp_iow - Handle the OTP (level) iow option
+ */
+static
+ERL_NIF_TERM ngetopt_otp_iow(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+ ERL_NIF_TERM eVal = esock_encode_bool(descP->iow);
+
+ return esock_make_ok2(env, eVal);
+}
+
+
+/* ngetopt_otp_ctrl_proc - Handle the OTP (level) controlling_process option
+ */
+static
+ERL_NIF_TERM ngetopt_otp_ctrl_proc(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+ ERL_NIF_TERM eVal = MKPID(env, &descP->ctrlPid);
+
+ return esock_make_ok2(env, eVal);
+}
+
+
+
+/* ngetopt_otp_rcvbuf - Handle the OTP (level) rcvbuf option
+ */
+static
+ERL_NIF_TERM ngetopt_otp_rcvbuf(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+ ERL_NIF_TERM eVal;
+
+ if (descP->rNum == 0) {
+ eVal = MKI(env, descP->rBufSz);
+ } else {
+ eVal = MKT2(env, MKI(env, descP->rNum), MKI(env, descP->rBufSz));
+ }
+
+ return esock_make_ok2(env, eVal);
+}
+
+
+/* ngetopt_otp_rcvctrlbuf - Handle the OTP (level) rcvctrlbuf option
+ */
+static
+ERL_NIF_TERM ngetopt_otp_rcvctrlbuf(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+ ERL_NIF_TERM eVal = MKI(env, descP->rCtrlSz);
+
+ return esock_make_ok2(env, eVal);
+}
+
+
+/* ngetopt_otp_sndctrlbuf - Handle the OTP (level) sndctrlbuf option
+ */
+static
+ERL_NIF_TERM ngetopt_otp_sndctrlbuf(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+ ERL_NIF_TERM eVal = MKI(env, descP->wCtrlSz);
+
+ return esock_make_ok2(env, eVal);
+}
+
+
+/* ngetopt_otp_fd - Handle the OTP (level) fd option
+ */
+static
+ERL_NIF_TERM ngetopt_otp_fd(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+ ERL_NIF_TERM eVal = MKI(env, descP->sock);
+
+ return esock_make_ok2(env, eVal);
+}
+
+
+/* ngetopt_otp_domain - Handle the OTP (level) domain option
+ */
+static
+ERL_NIF_TERM ngetopt_otp_domain(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+ ERL_NIF_TERM result;
+ int val = descP->domain;
+
+ switch (val) {
+ case AF_INET:
+ result = esock_make_ok2(env, esock_atom_inet);
+ break;
+
+#if defined(HAVE_IN6) && defined(AF_INET6)
+ case AF_INET6:
+ result = esock_make_ok2(env, esock_atom_inet6);
+ break;
+#endif
+
+#if defined(HAVE_SYS_UN_H)
+ case AF_UNIX:
+ result = esock_make_ok2(env, esock_atom_local);
+ break;
+#endif
+
+ default:
+ result = esock_make_error(env,
+ MKT2(env,
+ esock_atom_unknown,
+ MKI(env, val)));
+ break;
+ }
+
+ return result;
+}
+
+
+/* ngetopt_otp_type - Handle the OTP (level) type options.
+ */
+static
+ERL_NIF_TERM ngetopt_otp_type(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+ ERL_NIF_TERM result;
+ int val = descP->type;
+
+ switch (val) {
+ case SOCK_STREAM:
+ result = esock_make_ok2(env, esock_atom_stream);
+ break;
+
+ case SOCK_DGRAM:
+ result = esock_make_ok2(env, esock_atom_dgram);
+ break;
+
+#ifdef HAVE_SCTP
+ case SOCK_SEQPACKET:
+ result = esock_make_ok2(env, esock_atom_seqpacket);
+ break;
+#endif
+ case SOCK_RAW:
+ result = esock_make_ok2(env, esock_atom_raw);
+ break;
+
+ case SOCK_RDM:
+ result = esock_make_ok2(env, esock_atom_rdm);
+ break;
+
+ default:
+ result = esock_make_error(env,
+ MKT2(env, esock_atom_unknown, MKI(env, val)));
+ break;
+ }
+
+ return result;
+}
+
+
+/* ngetopt_otp_protocol - Handle the OTP (level) protocol options.
+ */
+static
+ERL_NIF_TERM ngetopt_otp_protocol(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+ ERL_NIF_TERM result;
+ int val = descP->protocol;
+
+ switch (val) {
+ case IPPROTO_IP:
+ result = esock_make_ok2(env, esock_atom_ip);
+ break;
+
+ case IPPROTO_TCP:
+ result = esock_make_ok2(env, esock_atom_tcp);
+ break;
+
+ case IPPROTO_UDP:
+ result = esock_make_ok2(env, esock_atom_udp);
+ break;
+
+#if defined(HAVE_SCTP)
+ case IPPROTO_SCTP:
+ result = esock_make_ok2(env, esock_atom_sctp);
+ break;
+#endif
+
+ default:
+ result = esock_make_error(env,
+ MKT2(env, esock_atom_unknown, MKI(env, val)));
+ break;
+ }
+
+ return result;
+}
+
+
+
+/* The option has *not* been encoded. Instead it has been provided
+ * in "native mode" (option is provided as is). In this case it will have the
+ * format: {NativeOpt :: integer(), ValueSize :: non_neg_integer()}
+ */
+static
+ERL_NIF_TERM ngetopt_native(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ int level,
+ ERL_NIF_TERM eOpt)
+{
+ ERL_NIF_TERM result = enif_make_badarg(env);
+ int opt;
+ Uint16 valueType;
+ SOCKOPTLEN_T valueSz;
+
+ SSDBG( descP,
+ ("SOCKET", "ngetopt_native -> entry with"
+ "\r\n level: %d"
+ "\r\n eOpt: %T"
+ "\r\n", level, eOpt) );
+
+ /* <KOLLA>
+ * We should really make it possible to specify more common specific types,
+ * such as integer or boolean (instead of the size)...
+ * </KOLLA>
+ */
+
+ if (decode_native_get_opt(env, eOpt, &opt, &valueType, (int*) &valueSz)) {
+
+ SSDBG( descP,
+ ("SOCKET", "ngetopt_native -> decoded opt"
+ "\r\n valueType: %d (%s)"
+ "\r\n ValueSize: %d"
+ "\r\n", valueType, VT2S(valueType), valueSz) );
+
+ switch (valueType) {
+ case SOCKET_OPT_VALUE_TYPE_UNSPEC:
+ result = ngetopt_native_unspec(env, descP, level, opt, valueSz);
+ break;
+ case SOCKET_OPT_VALUE_TYPE_INT:
+ result = ngetopt_int_opt(env, descP, level, opt);
+ break;
+ case SOCKET_OPT_VALUE_TYPE_BOOL:
+ result = ngetopt_bool_opt(env, descP, level, opt);
+ break;
+ default:
+ result = esock_make_error(env, esock_atom_einval);
+ break;
+ }
+ } else {
+ result = esock_make_error(env, esock_atom_einval);
+ }
+
+ SSDBG( descP,
+ ("SOCKET", "ngetopt_native -> done when"
+ "\r\n result: %T"
+ "\r\n", result) );
+
+ return result;
+}
+
+
+static
+ERL_NIF_TERM ngetopt_native_unspec(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ int level,
+ int opt,
+ SOCKOPTLEN_T valueSz)
+{
+ ERL_NIF_TERM result = esock_make_error(env, esock_atom_einval);
+ int res;
+
+ SSDBG( descP,
+ ("SOCKET", "ngetopt_native_unspec -> entry with"
+ "\r\n level: %d"
+ "\r\n opt: %d"
+ "\r\n valueSz: %d"
+ "\r\n", level, opt, valueSz) );
+
+ if (valueSz == 0) {
+ res = sock_getopt(descP->sock, level, opt, NULL, NULL);
+ if (res != 0)
+ result = esock_make_error_errno(env, sock_errno());
+ else
+ result = esock_atom_ok;
+ } else {
+ SOCKOPTLEN_T vsz = valueSz;
+ ErlNifBinary val;
+
+ SSDBG( descP, ("SOCKET", "ngetopt_native_unspec -> try alloc buffer\r\n") );
+
+ if (ALLOC_BIN(vsz, &val)) {
+ int saveErrno;
+ res = sock_getopt(descP->sock, level, opt, val.data, &vsz);
+ if (res != 0) {
+ saveErrno = sock_errno();
+
+ result = esock_make_error_errno(env, saveErrno);
+ } else {
+
+ /* Did we use all of the buffer? */
+ if (vsz == val.size) {
+
+ result = esock_make_ok2(env, MKBIN(env, &val));
+
+ } else {
+
+ ERL_NIF_TERM tmp;
+
+ tmp = MKBIN(env, &val);
+ tmp = MKSBIN(env, tmp, 0, vsz);
+
+ result = esock_make_ok2(env, tmp);
+ }
+ }
+ } else {
+ result = enif_make_badarg(env);
+ }
+ }
+
+ SSDBG( descP,
+ ("SOCKET", "ngetopt_native_unspec -> done when"
+ "\r\n result: %T"
+ "\r\n", result) );
+
+ return result;
+}
+
+
+
+/* ngetopt_level - A "proper" level (option) has been specified
+ */
+static
+ERL_NIF_TERM ngetopt_level(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ int level,
+ int eOpt)
+{
+ ERL_NIF_TERM result;
+
+ SSDBG( descP,
+ ("SOCKET", "ngetopt_level -> entry with"
+ "\r\n level: %d"
+ "\r\n eOpt: %d"
+ "\r\n", level, eOpt) );
+
+ switch (level) {
+ case SOL_SOCKET:
+ result = ngetopt_lvl_socket(env, descP, eOpt);
+ break;
+
+#if defined(SOL_IP)
+ case SOL_IP:
+#else
+ case IPPROTO_IP:
+#endif
+ result = ngetopt_lvl_ip(env, descP, eOpt);
+ break;
+
+#if defined(HAVE_IPV6)
+#if defined(SOL_IPV6)
+ case SOL_IPV6:
+#else
+ case IPPROTO_IPV6:
+#endif
+ result = ngetopt_lvl_ipv6(env, descP, eOpt);
+ break;
+#endif
+
+ case IPPROTO_TCP:
+ result = ngetopt_lvl_tcp(env, descP, eOpt);
+ break;
+
+ case IPPROTO_UDP:
+ result = ngetopt_lvl_udp(env, descP, eOpt);
+ break;
+
+#if defined(HAVE_SCTP)
+ case IPPROTO_SCTP:
+ result = ngetopt_lvl_sctp(env, descP, eOpt);
+ break;
+#endif
+
+ default:
+ result = esock_make_error(env, esock_atom_einval);
+ break;
+ }
+
+ SSDBG( descP,
+ ("SOCKET", "ngetopt_level -> done when"
+ "\r\n result: %T"
+ "\r\n", result) );
+
+ return result;
+}
+
+
+/* ngetopt_lvl_socket - Level *SOCKET* option
+ */
+static
+ERL_NIF_TERM ngetopt_lvl_socket(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ int eOpt)
+{
+ ERL_NIF_TERM result;
+
+ SSDBG( descP,
+ ("SOCKET", "ngetopt_lvl_socket -> entry with"
+ "\r\n eOpt: %d"
+ "\r\n", eOpt) );
+
+ switch (eOpt) {
+#if defined(SO_ACCEPTCONN)
+ case SOCKET_OPT_SOCK_ACCEPTCONN:
+ result = ngetopt_lvl_sock_acceptconn(env, descP);
+ break;
+#endif
+
+#if defined(SO_BINDTODEVICE)
+ case SOCKET_OPT_SOCK_BINDTODEVICE:
+ result = ngetopt_lvl_sock_bindtodevice(env, descP);
+ break;
+#endif
+
+#if defined(SO_BROADCAST)
+ case SOCKET_OPT_SOCK_BROADCAST:
+ result = ngetopt_lvl_sock_broadcast(env, descP);
+ break;
+#endif
+
+#if defined(SO_DEBUG)
+ case SOCKET_OPT_SOCK_DEBUG:
+ result = ngetopt_lvl_sock_debug(env, descP);
+ break;
+#endif
+
+#if defined(SO_DOMAIN)
+ case SOCKET_OPT_SOCK_DOMAIN:
+ result = ngetopt_lvl_sock_domain(env, descP);
+ break;
+#endif
+
+#if defined(SO_DONTROUTE)
+ case SOCKET_OPT_SOCK_DONTROUTE:
+ result = ngetopt_lvl_sock_dontroute(env, descP);
+ break;
+#endif
+
+#if defined(SO_KEEPALIVE)
+ case SOCKET_OPT_SOCK_KEEPALIVE:
+ result = ngetopt_lvl_sock_keepalive(env, descP);
+ break;
+#endif
+
+#if defined(SO_LINGER)
+ case SOCKET_OPT_SOCK_LINGER:
+ result = ngetopt_lvl_sock_linger(env, descP);
+ break;
+#endif
+
+#if defined(SO_OOBINLINE)
+ case SOCKET_OPT_SOCK_OOBINLINE:
+ result = ngetopt_lvl_sock_oobinline(env, descP);
+ break;
+#endif
+
+#if defined(SO_PEEK_OFF)
+ case SOCKET_OPT_SOCK_PEEK_OFF:
+ result = ngetopt_lvl_sock_peek_off(env, descP);
+ break;
+#endif
+
+#if defined(SO_PRIORITY)
+ case SOCKET_OPT_SOCK_PRIORITY:
+ result = ngetopt_lvl_sock_priority(env, descP);
+ break;
+#endif
+
+#if defined(SO_PROTOCOL)
+ case SOCKET_OPT_SOCK_PROTOCOL:
+ result = ngetopt_lvl_sock_protocol(env, descP);
+ break;
+#endif
+
+#if defined(SO_RCVBUF)
+ case SOCKET_OPT_SOCK_RCVBUF:
+ result = ngetopt_lvl_sock_rcvbuf(env, descP);
+ break;
+#endif
+
+#if defined(SO_RCVLOWAT)
+ case SOCKET_OPT_SOCK_RCVLOWAT:
+ result = ngetopt_lvl_sock_rcvlowat(env, descP);
+ break;
+#endif
+
+#if defined(SO_RCVTIMEO)
+ case SOCKET_OPT_SOCK_RCVTIMEO:
+ result = ngetopt_lvl_sock_rcvtimeo(env, descP);
+ break;
+#endif
+
+#if defined(SO_REUSEADDR)
+ case SOCKET_OPT_SOCK_REUSEADDR:
+ result = ngetopt_lvl_sock_reuseaddr(env, descP);
+ break;
+#endif
+
+#if defined(SO_REUSEPORT)
+ case SOCKET_OPT_SOCK_REUSEPORT:
+ result = ngetopt_lvl_sock_reuseport(env, descP);
+ break;
+#endif
+
+#if defined(SO_SNDBUF)
+ case SOCKET_OPT_SOCK_SNDBUF:
+ result = ngetopt_lvl_sock_sndbuf(env, descP);
+ break;
+#endif
+
+#if defined(SO_SNDLOWAT)
+ case SOCKET_OPT_SOCK_SNDLOWAT:
+ result = ngetopt_lvl_sock_sndlowat(env, descP);
+ break;
+#endif
+
+#if defined(SO_SNDTIMEO)
+ case SOCKET_OPT_SOCK_SNDTIMEO:
+ result = ngetopt_lvl_sock_sndtimeo(env, descP);
+ break;
+#endif
+
+#if defined(SO_TIMESTAMP)
+ case SOCKET_OPT_SOCK_TIMESTAMP:
+ result = ngetopt_lvl_sock_timestamp(env, descP);
+ break;
+#endif
+
+#if defined(SO_TYPE)
+ case SOCKET_OPT_SOCK_TYPE:
+ result = ngetopt_lvl_sock_type(env, descP);
+ break;
+#endif
+
+ default:
+ result = esock_make_error(env, esock_atom_einval);
+ break;
+ }
+
+ SSDBG( descP,
+ ("SOCKET", "ngetopt_lvl_socket -> done when"
+ "\r\n result: %T"
+ "\r\n", result) );
+
+ return result;
+}
+
+
+#if defined(SO_ACCEPTCONN)
+static
+ERL_NIF_TERM ngetopt_lvl_sock_acceptconn(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+ return ngetopt_bool_opt(env, descP, SOL_SOCKET, SO_ACCEPTCONN);
+}
+#endif
+
+
+#if defined(SO_BINDTODEVICE)
+static
+ERL_NIF_TERM ngetopt_lvl_sock_bindtodevice(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+ SSDBG( descP,
+ ("SOCKET", "ngetopt_lvl_sock_bindtodevice -> entry with\r\n") );
+
+ return ngetopt_str_opt(env, descP, SOL_SOCKET, SO_BROADCAST, IFNAMSIZ+1);
+}
+#endif
+
+
+#if defined(SO_BROADCAST)
+static
+ERL_NIF_TERM ngetopt_lvl_sock_broadcast(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+ return ngetopt_bool_opt(env, descP, SOL_SOCKET, SO_BROADCAST);
+}
+#endif
+
+
+#if defined(SO_DEBUG)
+static
+ERL_NIF_TERM ngetopt_lvl_sock_debug(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+ return ngetopt_int_opt(env, descP, SOL_SOCKET, SO_DEBUG);
+}
+#endif
+
+
+#if defined(SO_DOMAIN)
+static
+ERL_NIF_TERM ngetopt_lvl_sock_domain(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+ ERL_NIF_TERM result;
+ int val;
+ SOCKOPTLEN_T valSz = sizeof(val);
+ int res;
+
+ res = sock_getopt(descP->sock, SOL_SOCKET, SO_DOMAIN,
+ &val, &valSz);
+
+ if (res != 0) {
+ result = esock_make_error_errno(env, sock_errno());
+ } else {
+ switch (val) {
+ case AF_INET:
+ result = esock_make_ok2(env, esock_atom_inet);
+ break;
+
+#if defined(HAVE_IN6) && defined(AF_INET6)
+ case AF_INET6:
+ result = esock_make_ok2(env, esock_atom_inet6);
+ break;
+#endif
+
+#ifdef HAVE_SYS_UN_H
+ case AF_UNIX:
+ result = esock_make_ok2(env, esock_atom_local);
+ break;
+#endif
+
+ default:
+ result = esock_make_error(env,
+ MKT2(env,
+ esock_atom_unknown,
+ MKI(env, val)));
+ break;
+ }
+ }
+
+ return result;
+}
+#endif
+
+
+#if defined(SO_DONTROUTE)
+static
+ERL_NIF_TERM ngetopt_lvl_sock_dontroute(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+ return ngetopt_bool_opt(env, descP, SOL_SOCKET, SO_DONTROUTE);
+}
+#endif
+
+
+#if defined(SO_KEEPALIVE)
+static
+ERL_NIF_TERM ngetopt_lvl_sock_keepalive(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+ return ngetopt_bool_opt(env, descP, SOL_SOCKET, SO_KEEPALIVE);
+}
+#endif
+
+
+#if defined(SO_LINGER)
+static
+ERL_NIF_TERM ngetopt_lvl_sock_linger(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+ ERL_NIF_TERM result;
+ struct linger val;
+ SOCKOPTLEN_T valSz = sizeof(val);
+ int res;
+
+ sys_memzero((void *) &val, sizeof(val));
+
+ res = sock_getopt(descP->sock, SOL_SOCKET, SO_LINGER,
+ &val, &valSz);
+
+ if (res != 0) {
+ result = esock_make_error_errno(env, sock_errno());
+ } else {
+ ERL_NIF_TERM lOnOff = ((val.l_onoff) ? atom_true : atom_false);
+ ERL_NIF_TERM lSecs = MKI(env, val.l_linger);
+ ERL_NIF_TERM linger = MKT2(env, lOnOff, lSecs);
+
+ result = esock_make_ok2(env, linger);
+ }
+
+ return result;
+}
+#endif
+
+
+#if defined(SO_OOBINLINE)
+static
+ERL_NIF_TERM ngetopt_lvl_sock_oobinline(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+ return ngetopt_bool_opt(env, descP, SOL_SOCKET, SO_OOBINLINE);
+}
+#endif
+
+
+#if defined(SO_PEEK_OFF)
+static
+ERL_NIF_TERM ngetopt_lvl_sock_peek_off(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+ return ngetopt_int_opt(env, descP, SOL_SOCKET, SO_PEEK_OFF);
+}
+#endif
+
+
+#if defined(SO_PRIORITY)
+static
+ERL_NIF_TERM ngetopt_lvl_sock_priority(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+ return ngetopt_int_opt(env, descP, SOL_SOCKET, SO_PRIORITY);
+}
+#endif
+
+
+#if defined(SO_PROTOCOL)
+static
+ERL_NIF_TERM ngetopt_lvl_sock_protocol(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+ ERL_NIF_TERM result;
+ int val;
+ SOCKOPTLEN_T valSz = sizeof(val);
+ int res;
+
+ res = sock_getopt(descP->sock, SOL_SOCKET, SO_PROTOCOL,
+ &val, &valSz);
+
+ if (res != 0) {
+ result = esock_make_error_errno(env, sock_errno());
+ } else {
+ switch (val) {
+ case IPPROTO_IP:
+ result = esock_make_ok2(env, esock_atom_ip);
+ break;
+
+ case IPPROTO_TCP:
+ result = esock_make_ok2(env, esock_atom_tcp);
+ break;
+
+ case IPPROTO_UDP:
+ result = esock_make_ok2(env, esock_atom_udp);
+ break;
+
+#if defined(HAVE_SCTP)
+ case IPPROTO_SCTP:
+ result = esock_make_ok2(env, esock_atom_sctp);
+ break;
+#endif
+
+ default:
+ result = esock_make_error(env,
+ MKT2(env, esock_atom_unknown, MKI(env, val)));
+ break;
+ }
+ }
+
+ return result;
+}
+#endif
+
+
+#if defined(SO_RCVBUF)
+static
+ERL_NIF_TERM ngetopt_lvl_sock_rcvbuf(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+ return ngetopt_int_opt(env, descP, SOL_SOCKET, SO_RCVBUF);
+}
+#endif
+
+
+#if defined(SO_RCVLOWAT)
+static
+ERL_NIF_TERM ngetopt_lvl_sock_rcvlowat(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+ return ngetopt_int_opt(env, descP, SOL_SOCKET, SO_RCVLOWAT);
+}
+#endif
+
+
+#if defined(SO_RCVTIMEO)
+static
+ERL_NIF_TERM ngetopt_lvl_sock_rcvtimeo(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+ return ngetopt_timeval_opt(env, descP, SOL_SOCKET, SO_RCVTIMEO);
+}
+#endif
+
+
+#if defined(SO_REUSEADDR)
+static
+ERL_NIF_TERM ngetopt_lvl_sock_reuseaddr(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+ return ngetopt_bool_opt(env, descP, SOL_SOCKET, SO_REUSEADDR);
+}
+#endif
+
+
+#if defined(SO_REUSEPORT)
+static
+ERL_NIF_TERM ngetopt_lvl_sock_reuseport(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+ return ngetopt_bool_opt(env, descP, SOL_SOCKET, SO_REUSEPORT);
+}
+#endif
+
+
+#if defined(SO_SNDBUF)
+static
+ERL_NIF_TERM ngetopt_lvl_sock_sndbuf(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+ return ngetopt_int_opt(env, descP, SOL_SOCKET, SO_SNDBUF);
+}
+#endif
+
+
+#if defined(SO_SNDLOWAT)
+static
+ERL_NIF_TERM ngetopt_lvl_sock_sndlowat(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+ return ngetopt_int_opt(env, descP, SOL_SOCKET, SO_SNDLOWAT);
+}
+#endif
+
+
+#if defined(SO_SNDTIMEO)
+static
+ERL_NIF_TERM ngetopt_lvl_sock_sndtimeo(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+ return ngetopt_timeval_opt(env, descP, SOL_SOCKET, SO_SNDTIMEO);
+}
+#endif
+
+
+#if defined(SO_TIMESTAMP)
+static
+ERL_NIF_TERM ngetopt_lvl_sock_timestamp(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+ return ngetopt_bool_opt(env, descP, SOL_SOCKET, SO_TIMESTAMP);
+}
+#endif
+
+
+#if defined(SO_TYPE)
+static
+ERL_NIF_TERM ngetopt_lvl_sock_type(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+ ERL_NIF_TERM result;
+ int val;
+ SOCKOPTLEN_T valSz = sizeof(val);
+ int res;
+
+ res = sock_getopt(descP->sock, SOL_SOCKET, SO_TYPE, &val, &valSz);
+
+ if (res != 0) {
+ result = esock_make_error_errno(env, sock_errno());
+ } else {
+ switch (val) {
+ case SOCK_STREAM:
+ result = esock_make_ok2(env, esock_atom_stream);
+ break;
+ case SOCK_DGRAM:
+ result = esock_make_ok2(env, esock_atom_dgram);
+ break;
+#ifdef HAVE_SCTP
+ case SOCK_SEQPACKET:
+ result = esock_make_ok2(env, esock_atom_seqpacket);
+ break;
+#endif
+ case SOCK_RAW:
+ result = esock_make_ok2(env, esock_atom_raw);
+ break;
+ case SOCK_RDM:
+ result = esock_make_ok2(env, esock_atom_rdm);
+ break;
+ default:
+ result = esock_make_error(env,
+ MKT2(env, esock_atom_unknown, MKI(env, val)));
+ break;
+ }
+ }
+
+ return result;
+}
+#endif
+
+
+/* ngetopt_lvl_ip - Level *IP* option(s)
+ */
+static
+ERL_NIF_TERM ngetopt_lvl_ip(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ int eOpt)
+{
+ ERL_NIF_TERM result;
+
+ SSDBG( descP,
+ ("SOCKET", "ngetopt_lvl_ip -> entry with"
+ "\r\n eOpt: %d"
+ "\r\n", eOpt) );
+
+ switch (eOpt) {
+#if defined(IP_FREEBIND)
+ case SOCKET_OPT_IP_FREEBIND:
+ result = ngetopt_lvl_ip_freebind(env, descP);
+ break;
+#endif
+
+#if defined(IP_HDRINCL)
+ case SOCKET_OPT_IP_HDRINCL:
+ result = ngetopt_lvl_ip_hdrincl(env, descP);
+ break;
+#endif
+
+#if defined(IP_MINTTL)
+ case SOCKET_OPT_IP_MINTTL:
+ result = ngetopt_lvl_ip_minttl(env, descP);
+ break;
+#endif
+
+#if defined(IP_MTU)
+ case SOCKET_OPT_IP_MTU:
+ result = ngetopt_lvl_ip_mtu(env, descP);
+ break;
+#endif
+
+#if defined(IP_MTU_DISCOVER)
+ case SOCKET_OPT_IP_MTU_DISCOVER:
+ result = ngetopt_lvl_ip_mtu_discover(env, descP);
+ break;
+#endif
+
+#if defined(IP_MULTICAST_ALL)
+ case SOCKET_OPT_IP_MULTICAST_ALL:
+ result = ngetopt_lvl_ip_multicast_all(env, descP);
+ break;
+#endif
+
+#if defined(IP_MULTICAST_IF)
+ case SOCKET_OPT_IP_MULTICAST_IF:
+ result = ngetopt_lvl_ip_multicast_if(env, descP);
+ break;
+#endif
+
+#if defined(IP_MULTICAST_LOOP)
+ case SOCKET_OPT_IP_MULTICAST_LOOP:
+ result = ngetopt_lvl_ip_multicast_loop(env, descP);
+ break;
+#endif
+
+#if defined(IP_MULTICAST_TTL)
+ case SOCKET_OPT_IP_MULTICAST_TTL:
+ result = ngetopt_lvl_ip_multicast_ttl(env, descP);
+ break;
+#endif
+
+#if defined(IP_NODEFRAG)
+ case SOCKET_OPT_IP_NODEFRAG:
+ result = ngetopt_lvl_ip_nodefrag(env, descP);
+ break;
+#endif
+
+#if defined(IP_PKTINFO)
+ case SOCKET_OPT_IP_PKTINFO:
+ result = ngetopt_lvl_ip_pktinfo(env, descP);
+ break;
+#endif
+
+#if defined(IP_RECVDSTADDR)
+ case SOCKET_OPT_IP_RECVDSTADDR:
+ result = ngetopt_lvl_ip_recvdstaddr(env, descP);
+ break;
+#endif
+
+#if defined(IP_RECVERR)
+ case SOCKET_OPT_IP_RECVERR:
+ result = ngetopt_lvl_ip_recverr(env, descP);
+ break;
+#endif
+
+#if defined(IP_RECVIF)
+ case SOCKET_OPT_IP_RECVIF:
+ result = ngetopt_lvl_ip_recvif(env, descP);
+ break;
+#endif
+
+#if defined(IP_RECVOPTS)
+ case SOCKET_OPT_IP_RECVOPTS:
+ result = ngetopt_lvl_ip_recvopts(env, descP);
+ break;
+#endif
+
+#if defined(IP_RECVORIGDSTADDR)
+ case SOCKET_OPT_IP_RECVORIGDSTADDR:
+ result = ngetopt_lvl_ip_recvorigdstaddr(env, descP);
+ break;
+#endif
+
+#if defined(IP_RECVTOS)
+ case SOCKET_OPT_IP_RECVTOS:
+ result = ngetopt_lvl_ip_recvtos(env, descP);
+ break;
+#endif
+
+#if defined(IP_RECVTTL)
+ case SOCKET_OPT_IP_RECVTTL:
+ result = ngetopt_lvl_ip_recvttl(env, descP);
+ break;
+#endif
+
+#if defined(IP_RETOPTS)
+ case SOCKET_OPT_IP_RETOPTS:
+ result = ngetopt_lvl_ip_retopts(env, descP);
+ break;
+#endif
+
+#if defined(IP_ROUTER_ALERT)
+ case SOCKET_OPT_IP_ROUTER_ALERT:
+ result = ngetopt_lvl_ip_router_alert(env, descP);
+ break;
+#endif
+
+#if defined(IP_SENDSRCADDR)
+ case SOCKET_OPT_IP_SENDSRCADDR:
+ result = ngetopt_lvl_ip_sendsrcaddr(env, descP);
+ break;
+#endif
+
+#if defined(IP_TOS)
+ case SOCKET_OPT_IP_TOS:
+ result = ngetopt_lvl_ip_tos(env, descP);
+ break;
+#endif
+
+#if defined(IP_TRANSPARENT)
+ case SOCKET_OPT_IP_TRANSPARENT:
+ result = ngetopt_lvl_ip_transparent(env, descP);
+ break;
+#endif
+
+#if defined(IP_TTL)
+ case SOCKET_OPT_IP_TTL:
+ result = ngetopt_lvl_ip_ttl(env, descP);
+ break;
+#endif
+
+ default:
+ SSDBG( descP, ("SOCKET", "ngetopt_lvl_ip -> unknown opt %d\r\n", eOpt) );
+ result = esock_make_error(env, esock_atom_einval);
+ break;
+ }
+
+ SSDBG( descP,
+ ("SOCKET", "ngetopt_lvl_ip -> done when"
+ "\r\n result: %T"
+ "\r\n", result) );
+
+ return result;
+}
+
+
+/* ngetopt_lvl_ip_minttl - Level IP MINTTL option
+ */
+#if defined(IP_MINTTL)
+static
+ERL_NIF_TERM ngetopt_lvl_ip_minttl(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+#if defined(SOL_IP)
+ int level = SOL_IP;
+#else
+ int level = IPPROTO_IP;
+#endif
+
+ return ngetopt_int_opt(env, descP, level, IP_MINTTL);
+}
+#endif
+
+
+/* ngetopt_lvl_ip_freebind - Level IP FREEBIND option
+ */
+#if defined(IP_FREEBIND)
+static
+ERL_NIF_TERM ngetopt_lvl_ip_freebind(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+#if defined(SOL_IP)
+ int level = SOL_IP;
+#else
+ int level = IPPROTO_IP;
+#endif
+
+ return ngetopt_bool_opt(env, descP, level, IP_FREEBIND);
+}
+#endif
+
+
+/* ngetopt_lvl_ip_hdrincl - Level IP HDRINCL option
+ */
+#if defined(IP_HDRINCL)
+static
+ERL_NIF_TERM ngetopt_lvl_ip_hdrincl(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+#if defined(SOL_IP)
+ int level = SOL_IP;
+#else
+ int level = IPPROTO_IP;
+#endif
+
+ return ngetopt_bool_opt(env, descP, level, IP_HDRINCL);
+}
+#endif
+
+
+/* ngetopt_lvl_ip_mtu - Level IP MTU option
+ */
+#if defined(IP_MTU)
+static
+ERL_NIF_TERM ngetopt_lvl_ip_mtu(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+#if defined(SOL_IP)
+ int level = SOL_IP;
+#else
+ int level = IPPROTO_IP;
+#endif
+
+ return ngetopt_int_opt(env, descP, level, IP_MTU);
+}
+#endif
+
+
+/* ngetopt_lvl_ip_mtu_discover - Level IP MTU_DISCOVER option
+ */
+#if defined(IP_MTU_DISCOVER)
+static
+ERL_NIF_TERM ngetopt_lvl_ip_mtu_discover(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+ ERL_NIF_TERM result;
+ ERL_NIF_TERM eMtuDisc;
+ int mtuDisc;
+ SOCKOPTLEN_T mtuDiscSz = sizeof(mtuDisc);
+ int res;
+#if defined(SOL_IP)
+ int level = SOL_IP;
+#else
+ int level = IPPROTO_IP;
+#endif
+
+ res = sock_getopt(descP->sock, level, IP_MTU_DISCOVER,
+ &mtuDisc, &mtuDiscSz);
+
+ if (res != 0) {
+ result = esock_make_error_errno(env, sock_errno());
+ } else {
+ encode_ip_pmtudisc(env, mtuDisc, &eMtuDisc);
+ result = esock_make_ok2(env, eMtuDisc);
+ }
+
+ return result;
+
+}
+#endif
+
+
+/* ngetopt_lvl_ip_multicast_all - Level IP MULTICAST_ALL option
+ */
+#if defined(IP_MULTICAST_ALL)
+static
+ERL_NIF_TERM ngetopt_lvl_ip_multicast_all(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+#if defined(SOL_IP)
+ int level = SOL_IP;
+#else
+ int level = IPPROTO_IP;
+#endif
+
+ return ngetopt_bool_opt(env, descP, level, IP_MULTICAST_ALL);
+}
+#endif
+
+
+/* ngetopt_lvl_ip_multicast_if - Level IP MULTICAST_IF option
+ */
+#if defined(IP_MULTICAST_IF)
+static
+ERL_NIF_TERM ngetopt_lvl_ip_multicast_if(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+ ERL_NIF_TERM result;
+ ERL_NIF_TERM eAddr;
+ struct in_addr ifAddr;
+ SOCKOPTLEN_T ifAddrSz = sizeof(ifAddr);
+ char* xres;
+ int res;
+#if defined(SOL_IP)
+ int level = SOL_IP;
+#else
+ int level = IPPROTO_IP;
+#endif
+
+ res = sock_getopt(descP->sock, level, IP_MULTICAST_IF, &ifAddr, &ifAddrSz);
+
+ if (res != 0) {
+ result = esock_make_error_errno(env, sock_errno());
+ } else {
+ if ((xres = esock_encode_ip4_address(env, &ifAddr, &eAddr)) != NULL) {
+ result = esock_make_error_str(env, xres);
+ } else {
+ result = esock_make_ok2(env, eAddr);
+ }
+ }
+
+ return result;
+
+}
+#endif
+
+
+/* ngetopt_lvl_ip_multicast_loop - Level IP MULTICAST_LOOP option
+ */
+#if defined(IP_MULTICAST_LOOP)
+static
+ERL_NIF_TERM ngetopt_lvl_ip_multicast_loop(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+#if defined(SOL_IP)
+ int level = SOL_IP;
+#else
+ int level = IPPROTO_IP;
+#endif
+
+ return ngetopt_bool_opt(env, descP, level, IP_MULTICAST_LOOP);
+}
+#endif
+
+
+/* ngetopt_lvl_ip_multicast_ttl - Level IP MULTICAST_TTL option
+ */
+#if defined(IP_MULTICAST_TTL)
+static
+ERL_NIF_TERM ngetopt_lvl_ip_multicast_ttl(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+#if defined(SOL_IP)
+ int level = SOL_IP;
+#else
+ int level = IPPROTO_IP;
+#endif
+
+ return ngetopt_int_opt(env, descP, level, IP_MULTICAST_TTL);
+}
+#endif
+
+
+/* ngetopt_lvl_ip_nodefrag - Level IP NODEFRAG option
+ */
+#if defined(IP_NODEFRAG)
+static
+ERL_NIF_TERM ngetopt_lvl_ip_nodefrag(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+#if defined(SOL_IP)
+ int level = SOL_IP;
+#else
+ int level = IPPROTO_IP;
+#endif
+
+ return ngetopt_bool_opt(env, descP, level, IP_NODEFRAG);
+}
+#endif
+
+
+/* ngetopt_lvl_ip_pktinfo - Level IP PKTINFO option
+ */
+#if defined(IP_PKTINFO)
+static
+ERL_NIF_TERM ngetopt_lvl_ip_pktinfo(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+#if defined(SOL_IP)
+ int level = SOL_IP;
+#else
+ int level = IPPROTO_IP;
+#endif
+
+ return ngetopt_bool_opt(env, descP, level, IP_PKTINFO);
+}
+#endif
+
+
+/* ngetopt_lvl_ip_recvtos - Level IP RECVTOS option
+ */
+#if defined(IP_RECVTOS)
+static
+ERL_NIF_TERM ngetopt_lvl_ip_recvtos(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+#if defined(SOL_IP)
+ int level = SOL_IP;
+#else
+ int level = IPPROTO_IP;
+#endif
+
+ return ngetopt_bool_opt(env, descP, level, IP_RECVTOS);
+}
+#endif
+
+
+/* ngetopt_lvl_ip_recvdstaddr - Level IP RECVDSTADDR option
+ */
+#if defined(IP_RECVDSTADDR)
+static
+ERL_NIF_TERM ngetopt_lvl_ip_recvdstaddr(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+#if defined(SOL_IP)
+ int level = SOL_IP;
+#else
+ int level = IPPROTO_IP;
+#endif
+
+ return ngetopt_bool_opt(env, descP, level, IP_RECVDSTADDR);
+}
+#endif
+
+
+/* ngetopt_lvl_ip_recverr - Level IP RECVERR option
+ */
+#if defined(IP_RECVERR)
+static
+ERL_NIF_TERM ngetopt_lvl_ip_recverr(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+#if defined(SOL_IP)
+ int level = SOL_IP;
+#else
+ int level = IPPROTO_IP;
+#endif
+
+ return ngetopt_bool_opt(env, descP, level, IP_RECVERR);
+}
+#endif
+
+
+/* ngetopt_lvl_ip_recvif - Level IP RECVIF option
+ */
+#if defined(IP_RECVIF)
+static
+ERL_NIF_TERM ngetopt_lvl_ip_recvif(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+#if defined(SOL_IP)
+ int level = SOL_IP;
+#else
+ int level = IPPROTO_IP;
+#endif
+
+ return ngetopt_bool_opt(env, descP, level, IP_RECVIF);
+}
+#endif
+
+
+/* ngetopt_lvl_ip_recvopt - Level IP RECVOPTS option
+ */
+#if defined(IP_RECVOPTS)
+static
+ERL_NIF_TERM ngetopt_lvl_ip_recvopts(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+#if defined(SOL_IP)
+ int level = SOL_IP;
+#else
+ int level = IPPROTO_IP;
+#endif
+
+ return ngetopt_bool_opt(env, descP, level, IP_RECVOPTS);
+}
+#endif
+
+
+/* ngetopt_lvl_ip_recvorigdstaddr - Level IP RECVORIGDSTADDR option
+ */
+#if defined(IP_RECVORIGDSTADDR)
+static
+ERL_NIF_TERM ngetopt_lvl_ip_recvorigdstaddr(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+#if defined(SOL_IP)
+ int level = SOL_IP;
+#else
+ int level = IPPROTO_IP;
+#endif
+
+ return ngetopt_bool_opt(env, descP, level, IP_RECVORIGDSTADDR);
+}
+#endif
+
+
+/* ngetopt_lvl_ip_recvttl - Level IP RECVTTL option
+ */
+#if defined(IP_RECVTTL)
+static
+ERL_NIF_TERM ngetopt_lvl_ip_recvttl(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+#if defined(SOL_IP)
+ int level = SOL_IP;
+#else
+ int level = IPPROTO_IP;
+#endif
+
+ return ngetopt_bool_opt(env, descP, level, IP_RECVTTL);
+}
+#endif
+
+
+/* ngetopt_lvl_ip_retopts - Level IP RETOPTS option
+ */
+#if defined(IP_RETOPTS)
+static
+ERL_NIF_TERM ngetopt_lvl_ip_retopts(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+#if defined(SOL_IP)
+ int level = SOL_IP;
+#else
+ int level = IPPROTO_IP;
+#endif
+
+ return ngetopt_bool_opt(env, descP, level, IP_RETOPTS);
+}
+#endif
+
+
+/* ngetopt_lvl_ip_router_alert - Level IP ROUTER_ALERT option
+ */
+#if defined(IP_ROUTER_ALERT)
+static
+ERL_NIF_TERM ngetopt_lvl_ip_router_alert(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+#if defined(SOL_IP)
+ int level = SOL_IP;
+#else
+ int level = IPPROTO_IP;
+#endif
+
+ return ngetopt_int_opt(env, descP, level, IP_ROUTER_ALERT);
+}
+#endif
+
+
+/* ngetopt_lvl_ip_sendsrcaddr - Level IP SENDSRCADDR option
+ */
+#if defined(IP_SENDSRCADDR)
+static
+ERL_NIF_TERM ngetopt_lvl_ip_sendsrcaddr(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+#if defined(SOL_IP)
+ int level = SOL_IP;
+#else
+ int level = IPPROTO_IP;
+#endif
+
+ return ngetopt_bool_opt(env, descP, level, IP_SENDSRCADDR);
+}
+#endif
+
+
+/* ngetopt_lvl_ip_tos - Level IP TOS option
+ */
+#if defined(IP_TOS)
+static
+ERL_NIF_TERM ngetopt_lvl_ip_tos(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+#if defined(SOL_IP)
+ int level = SOL_IP;
+#else
+ int level = IPPROTO_IP;
+#endif
+ ERL_NIF_TERM result;
+ int val;
+ SOCKOPTLEN_T valSz = sizeof(val);
+ int res;
+
+ res = sock_getopt(descP->sock, level, IP_TOS, &val, &valSz);
+
+ if (res != 0) {
+ result = esock_make_error_errno(env, sock_errno());
+ } else {
+ result = encode_ip_tos(env, val);
+ }
+
+ return result;
+}
+#endif
+
+
+/* ngetopt_lvl_ip_transparent - Level IP TRANSPARENT option
+ */
+#if defined(IP_TRANSPARENT)
+static
+ERL_NIF_TERM ngetopt_lvl_ip_transparent(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+#if defined(SOL_IP)
+ int level = SOL_IP;
+#else
+ int level = IPPROTO_IP;
+#endif
+
+ return ngetopt_bool_opt(env, descP, level, IP_TRANSPARENT);
+}
+#endif
+
+
+
+/* ngetopt_lvl_ip_ttl - Level IP TTL option
+ */
+#if defined(IP_TTL)
+static
+ERL_NIF_TERM ngetopt_lvl_ip_ttl(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+#if defined(SOL_IP)
+ int level = SOL_IP;
+#else
+ int level = IPPROTO_IP;
+#endif
+
+ return ngetopt_int_opt(env, descP, level, IP_TTL);
+}
+#endif
+
+
+
+/* ngetopt_lvl_ipv6 - Level *IPv6* option(s)
+ */
+#if defined(HAVE_IPV6)
+static
+ERL_NIF_TERM ngetopt_lvl_ipv6(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ int eOpt)
+{
+ ERL_NIF_TERM result;
+
+ SSDBG( descP,
+ ("SOCKET", "ngetopt_lvl_ipv6 -> entry with"
+ "\r\n eOpt: %d"
+ "\r\n", eOpt) );
+
+ switch (eOpt) {
+#if defined(IPV6_AUTHHDR)
+ case SOCKET_OPT_IPV6_AUTHHDR:
+ result = ngetopt_lvl_ipv6_authhdr(env, descP);
+ break;
+#endif
+
+#if defined(IPV6_DSTOPTS)
+ case SOCKET_OPT_IPV6_DSTOPTS:
+ result = ngetopt_lvl_ipv6_dstopts(env, descP);
+ break;
+#endif
+
+#if defined(IPV6_FLOWINFO)
+ case SOCKET_OPT_IPV6_FLOWINFO:
+ result = ngetopt_lvl_ipv6_flowinfo(env, descP);
+ break;
+#endif
+
+#if defined(IPV6_HOPLIMIT)
+ case SOCKET_OPT_IPV6_HOPLIMIT:
+ result = ngetopt_lvl_ipv6_hoplimit(env, descP);
+ break;
+#endif
+
+#if defined(IPV6_HOPOPTS)
+ case SOCKET_OPT_IPV6_HOPOPTS:
+ result = ngetopt_lvl_ipv6_hopopts(env, descP);
+ break;
+#endif
+
+#if defined(IPV6_MTU)
+ case SOCKET_OPT_IPV6_MTU:
+ result = ngetopt_lvl_ipv6_mtu(env, descP);
+ break;
+#endif
+
+#if defined(IPV6_MTU_DISCOVER)
+ case SOCKET_OPT_IPV6_MTU_DISCOVER:
+ result = ngetopt_lvl_ipv6_mtu_discover(env, descP);
+ break;
+#endif
+
+#if defined(IPV6_MULTICAST_HOPS)
+ case SOCKET_OPT_IPV6_MULTICAST_HOPS:
+ result = ngetopt_lvl_ipv6_multicast_hops(env, descP);
+ break;
+#endif
+
+#if defined(IPV6_MULTICAST_IF)
+ case SOCKET_OPT_IPV6_MULTICAST_IF:
+ result = ngetopt_lvl_ipv6_multicast_if(env, descP);
+ break;
+#endif
+
+#if defined(IPV6_MULTICAST_LOOP)
+ case SOCKET_OPT_IPV6_MULTICAST_LOOP:
+ result = ngetopt_lvl_ipv6_multicast_loop(env, descP);
+ break;
+#endif
+
+#if defined(IPV6_RECVERR)
+ case SOCKET_OPT_IPV6_RECVERR:
+ result = ngetopt_lvl_ipv6_recverr(env, descP);
+ break;
+#endif
+
+#if defined(IPV6_RECVPKTINFO) || defined(IPV6_PKTINFO)
+ case SOCKET_OPT_IPV6_RECVPKTINFO:
+ result = ngetopt_lvl_ipv6_recvpktinfo(env, descP);
+ break;
+#endif
+
+#if defined(IPV6_ROUTER_ALERT)
+ case SOCKET_OPT_IPV6_ROUTER_ALERT:
+ result = ngetopt_lvl_ipv6_router_alert(env, descP);
+ break;
+#endif
+
+#if defined(IPV6_RTHDR)
+ case SOCKET_OPT_IPV6_RTHDR:
+ result = ngetopt_lvl_ipv6_rthdr(env, descP);
+ break;
+#endif
+
+#if defined(IPV6_UNICAST_HOPS)
+ case SOCKET_OPT_IPV6_UNICAST_HOPS:
+ result = ngetopt_lvl_ipv6_unicast_hops(env, descP);
+ break;
+#endif
+
+#if defined(IPV6_V6ONLY)
+ case SOCKET_OPT_IPV6_V6ONLY:
+ result = ngetopt_lvl_ipv6_v6only(env, descP);
+ break;
+#endif
+
+ default:
+ result = esock_make_error(env, esock_atom_einval);
+ break;
+ }
+
+ SSDBG( descP,
+ ("SOCKET", "ngetopt_lvl_ipv6 -> done when"
+ "\r\n result: %T"
+ "\r\n", result) );
+
+ return result;
+}
+
+
+#if defined(IPV6_AUTHHDR)
+static
+ERL_NIF_TERM ngetopt_lvl_ipv6_authhdr(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+ return ngetopt_bool_opt(env, descP, SOL_IPV6, IPV6_AUTHHDR);
+}
+#endif
+
+
+#if defined(IPV6_DSTOPTS)
+static
+ERL_NIF_TERM ngetopt_lvl_ipv6_dstopts(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+#if defined(SOL_IPV6)
+ int level = SOL_IPV6;
+#else
+ int level = IPPROTO_IPV6;
+#endif
+ return ngetopt_bool_opt(env, descP, level, IPV6_DSTOPTS);
+}
+#endif
+
+
+#if defined(IPV6_FLOWINFO)
+static
+ERL_NIF_TERM ngetopt_lvl_ipv6_flowinfo(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+#if defined(SOL_IPV6)
+ int level = SOL_IPV6;
+#else
+ int level = IPPROTO_IPV6;
+#endif
+
+ return ngetopt_bool_opt(env, descP, level, IPV6_FLOWINFO);
+}
+#endif
+
+
+#if defined(IPV6_HOPLIMIT)
+static
+ERL_NIF_TERM ngetopt_lvl_ipv6_hoplimit(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+#if defined(SOL_IPV6)
+ int level = SOL_IPV6;
+#else
+ int level = IPPROTO_IPV6;
+#endif
+
+ return ngetopt_bool_opt(env, descP, level, IPV6_HOPLIMIT);
+}
+#endif
+
+
+#if defined(IPV6_HOPOPTS)
+static
+ERL_NIF_TERM ngetopt_lvl_ipv6_hopopts(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+#if defined(SOL_IPV6)
+ int level = SOL_IPV6;
+#else
+ int level = IPPROTO_IPV6;
+#endif
+
+ return ngetopt_bool_opt(env, descP, level, IPV6_HOPOPTS);
+}
+#endif
+
+
+#if defined(IPV6_MTU)
+static
+ERL_NIF_TERM ngetopt_lvl_ipv6_mtu(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+#if defined(SOL_IPV6)
+ int level = SOL_IPV6;
+#else
+ int level = IPPROTO_IPV6;
+#endif
+
+ return ngetopt_int_opt(env, descP, level, IPV6_MTU);
+}
+#endif
+
+
+/* ngetopt_lvl_ipv6_mtu_discover - Level IPv6 MTU_DISCOVER option
+ */
+#if defined(IPV6_MTU_DISCOVER)
+static
+ERL_NIF_TERM ngetopt_lvl_ipv6_mtu_discover(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+ ERL_NIF_TERM result;
+ ERL_NIF_TERM eMtuDisc;
+ int mtuDisc;
+ SOCKOPTLEN_T mtuDiscSz = sizeof(mtuDisc);
+ int res;
+#if defined(SOL_IPV6)
+ int level = SOL_IPV6;
+#else
+ int level = IPPROTO_IPV6;
+#endif
+
+ res = sock_getopt(descP->sock, level, IPV6_MTU_DISCOVER,
+ &mtuDisc, &mtuDiscSz);
+
+ if (res != 0) {
+ result = esock_make_error_errno(env, sock_errno());
+ } else {
+ encode_ipv6_pmtudisc(env, mtuDisc, &eMtuDisc);
+ result = esock_make_ok2(env, eMtuDisc);
+ }
+
+ return result;
+
+}
+#endif
+
+
+#if defined(IPV6_MULTICAST_HOPS)
+static
+ERL_NIF_TERM ngetopt_lvl_ipv6_multicast_hops(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+#if defined(SOL_IPV6)
+ int level = SOL_IPV6;
+#else
+ int level = IPPROTO_IPV6;
+#endif
+
+ return ngetopt_int_opt(env, descP, level, IPV6_MULTICAST_HOPS);
+}
+#endif
+
+
+#if defined(IPV6_MULTICAST_IF)
+static
+ERL_NIF_TERM ngetopt_lvl_ipv6_multicast_if(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+#if defined(SOL_IPV6)
+ int level = SOL_IPV6;
+#else
+ int level = IPPROTO_IPV6;
+#endif
+
+ return ngetopt_int_opt(env, descP, level, IPV6_MULTICAST_IF);
+}
+#endif
+
+
+#if defined(IPV6_MULTICAST_LOOP)
+static
+ERL_NIF_TERM ngetopt_lvl_ipv6_multicast_loop(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+#if defined(SOL_IPV6)
+ int level = SOL_IPV6;
+#else
+ int level = IPPROTO_IPV6;
+#endif
+
+ return ngetopt_bool_opt(env, descP, level, IPV6_MULTICAST_LOOP);
+}
+#endif
+
+
+#if defined(IPV6_RECVERR)
+static
+ERL_NIF_TERM ngetopt_lvl_ipv6_recverr(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+#if defined(SOL_IPV6)
+ int level = SOL_IPV6;
+#else
+ int level = IPPROTO_IPV6;
+#endif
+
+ return ngetopt_bool_opt(env, descP, level, IPV6_RECVERR);
+}
+#endif
+
+
+#if defined(IPV6_RECVPKTINFO) || defined(IPV6_PKTINFO)
+static
+ERL_NIF_TERM ngetopt_lvl_ipv6_recvpktinfo(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+#if defined(SOL_IPV6)
+ int level = SOL_IPV6;
+#else
+ int level = IPPROTO_IPV6;
+#endif
+#if defined(IPV6_RECVPKTINFO)
+ int opt = IPV6_RECVPKTINFO;
+#else
+ int opt = IPV6_PKTINFO;
+#endif
+
+ return ngetopt_bool_opt(env, descP, level, opt);
+}
+#endif
+
+
+#if defined(IPV6_ROUTER_ALERT)
+static
+ERL_NIF_TERM ngetopt_lvl_ipv6_router_alert(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+#if defined(SOL_IPV6)
+ int level = SOL_IPV6;
+#else
+ int level = IPPROTO_IPV6;
+#endif
+
+ return ngetopt_int_opt(env, descP, level, IPV6_ROUTER_ALERT);
+}
+#endif
+
+
+#if defined(IPV6_RTHDR)
+static
+ERL_NIF_TERM ngetopt_lvl_ipv6_rthdr(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+#if defined(SOL_IPV6)
+ int level = SOL_IPV6;
+#else
+ int level = IPPROTO_IPV6;
+#endif
+
+ return ngetopt_bool_opt(env, descP, level, IPV6_RTHDR);
+}
+#endif
+
+
+#if defined(IPV6_UNICAST_HOPS)
+static
+ERL_NIF_TERM ngetopt_lvl_ipv6_unicast_hops(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+#if defined(SOL_IPV6)
+ int level = SOL_IPV6;
+#else
+ int level = IPPROTO_IPV6;
+#endif
+
+ return ngetopt_int_opt(env, descP, level, IPV6_UNICAST_HOPS);
+}
+#endif
+
+
+#if defined(IPV6_V6ONLY)
+static
+ERL_NIF_TERM ngetopt_lvl_ipv6_v6only(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+#if defined(SOL_IPV6)
+ int level = SOL_IPV6;
+#else
+ int level = IPPROTO_IPV6;
+#endif
+
+ return ngetopt_bool_opt(env, descP, level, IPV6_V6ONLY);
+}
+#endif
+
+
+#endif // defined(HAVE_IPV6)
+
+
+
+/* ngetopt_lvl_tcp - Level *TCP* option(s)
+ */
+static
+ERL_NIF_TERM ngetopt_lvl_tcp(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ int eOpt)
+{
+ ERL_NIF_TERM result;
+
+ switch (eOpt) {
+#if defined(TCP_CONGESTION)
+ case SOCKET_OPT_TCP_CONGESTION:
+ result = ngetopt_lvl_tcp_congestion(env, descP);
+ break;
+#endif
+
+#if defined(TCP_MAXSEG)
+ case SOCKET_OPT_TCP_MAXSEG:
+ result = ngetopt_lvl_tcp_maxseg(env, descP);
+ break;
+#endif
+
+#if defined(TCP_NODELAY)
+ case SOCKET_OPT_TCP_NODELAY:
+ result = ngetopt_lvl_tcp_nodelay(env, descP);
+ break;
+#endif
+
+ default:
+ result = esock_make_error(env, esock_atom_einval);
+ break;
+ }
+
+ return result;
+}
+
+
+/* ngetopt_lvl_tcp_congestion - Level TCP CONGESTION option
+ */
+#if defined(TCP_CONGESTION)
+static
+ERL_NIF_TERM ngetopt_lvl_tcp_congestion(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+ int max = SOCKET_OPT_TCP_CONGESTION_NAME_MAX+1;
+
+ return ngetopt_str_opt(env, descP, IPPROTO_TCP, TCP_CONGESTION, max);
+}
+#endif
+
+
+/* ngetopt_lvl_tcp_maxseg - Level TCP MAXSEG option
+ */
+#if defined(TCP_MAXSEG)
+static
+ERL_NIF_TERM ngetopt_lvl_tcp_maxseg(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+ return ngetopt_int_opt(env, descP, IPPROTO_TCP, TCP_MAXSEG);
+}
+#endif
+
+
+/* ngetopt_lvl_tcp_nodelay - Level TCP NODELAY option
+ */
+#if defined(TCP_NODELAY)
+static
+ERL_NIF_TERM ngetopt_lvl_tcp_nodelay(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+ return ngetopt_bool_opt(env, descP, IPPROTO_TCP, TCP_NODELAY);
+}
+#endif
+
+
+
+/* ngetopt_lvl_udp - Level *UDP* option(s)
+ */
+static
+ERL_NIF_TERM ngetopt_lvl_udp(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ int eOpt)
+{
+ ERL_NIF_TERM result;
+
+ switch (eOpt) {
+#if defined(UDP_CORK)
+ case SOCKET_OPT_UDP_CORK:
+ result = ngetopt_lvl_udp_cork(env, descP);
+ break;
+#endif
+
+ default:
+ result = esock_make_error(env, esock_atom_einval);
+ break;
+ }
+
+ return result;
+}
+
+
+/* ngetopt_lvl_udp_cork - Level UDP CORK option
+ */
+#if defined(UDP_CORK)
+static
+ERL_NIF_TERM ngetopt_lvl_udp_cork(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+ return ngetopt_bool_opt(env, descP, IPPROTO_UDP, UDP_CORK);
+}
+#endif
+
+
+
+/* ngetopt_lvl_sctp - Level *SCTP* option(s)
+ */
+#if defined(HAVE_SCTP)
+static
+ERL_NIF_TERM ngetopt_lvl_sctp(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ int eOpt)
+{
+ ERL_NIF_TERM result;
+
+ SSDBG( descP,
+ ("SOCKET", "ngetopt_lvl_sctp -> entry with"
+ "\r\n opt: %d"
+ "\r\n", eOpt) );
+
+ switch (eOpt) {
+#if defined(SCTP_ASSOCINFO)
+ case SOCKET_OPT_SCTP_ASSOCINFO:
+ result = ngetopt_lvl_sctp_associnfo(env, descP);
+ break;
+#endif
+
+#if defined(SCTP_AUTOCLOSE)
+ case SOCKET_OPT_SCTP_AUTOCLOSE:
+ result = ngetopt_lvl_sctp_autoclose(env, descP);
+ break;
+#endif
+
+#if defined(SCTP_DISABLE_FRAGMENTS)
+ case SOCKET_OPT_SCTP_DISABLE_FRAGMENTS:
+ result = ngetopt_lvl_sctp_disable_fragments(env, descP);
+ break;
+#endif
+
+#if defined(SCTP_INITMSG)
+ case SOCKET_OPT_SCTP_INITMSG:
+ result = ngetopt_lvl_sctp_initmsg(env, descP);
+ break;
+#endif
+
+#if defined(SCTP_MAXSEG)
+ case SOCKET_OPT_SCTP_MAXSEG:
+ result = ngetopt_lvl_sctp_maxseg(env, descP);
+ break;
+#endif
+
+#if defined(SCTP_NODELAY)
+ case SOCKET_OPT_SCTP_NODELAY:
+ result = ngetopt_lvl_sctp_nodelay(env, descP);
+ break;
+#endif
+
+#if defined(SCTP_RTOINFO)
+ case SOCKET_OPT_SCTP_RTOINFO:
+ result = ngetopt_lvl_sctp_rtoinfo(env, descP);
+ break;
+#endif
+
+ default:
+ result = esock_make_error(env, esock_atom_einval);
+ break;
+ }
+
+ SSDBG( descP,
+ ("SOCKET", "ngetopt_lvl_sctp -> done when"
+ "\r\n result: %T"
+ "\r\n", result) );
+
+ return result;
+}
+
+
+/* ngetopt_lvl_sctp_associnfo - Level SCTP ASSOCINFO option
+ *
+ * <KOLLA>
+ *
+ * We should really specify which association this relates to,
+ * as it is now we get assoc-id = 0. If this socket is an
+ * association (and not an endpoint) then it will have an
+ * assoc id. But since the sctp support at present is "limited",
+ * we leave it for now.
+ * What do we do if this is an endpoint? Invalid op?
+ *
+ * </KOLLA>
+ */
+#if defined(SCTP_ASSOCINFO)
+static
+ERL_NIF_TERM ngetopt_lvl_sctp_associnfo(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+ ERL_NIF_TERM result;
+ struct sctp_assocparams val;
+ SOCKOPTLEN_T valSz = sizeof(val);
+ int res;
+
+ SSDBG( descP, ("SOCKET", "ngetopt_lvl_sctp_associnfo -> entry\r\n") );
+
+ sys_memzero((char*) &val, valSz);
+ res = sock_getopt(descP->sock, IPPROTO_SCTP, SCTP_ASSOCINFO, &val, &valSz);
+
+ if (res != 0) {
+ result = esock_make_error_errno(env, sock_errno());
+ } else {
+ ERL_NIF_TERM eAssocParams;
+ ERL_NIF_TERM keys[] = {atom_assoc_id, atom_max_rxt, atom_num_peer_dests,
+ atom_peer_rwnd, atom_local_rwnd, atom_cookie_life};
+ ERL_NIF_TERM vals[] = {MKUI(env, val.sasoc_assoc_id),
+ MKUI(env, val.sasoc_asocmaxrxt),
+ MKUI(env, val.sasoc_number_peer_destinations),
+ MKUI(env, val.sasoc_peer_rwnd),
+ MKUI(env, val.sasoc_local_rwnd),
+ MKUI(env, val.sasoc_cookie_life)};
+ unsigned int numKeys = sizeof(keys) / sizeof(ERL_NIF_TERM);
+ unsigned int numVals = sizeof(vals) / sizeof(ERL_NIF_TERM);
+
+ ESOCK_ASSERT( (numKeys == numVals) );
+
+ if (!MKMA(env, keys, vals, numKeys, &eAssocParams))
+ return esock_make_error(env, esock_atom_einval);;
+
+ result = esock_make_ok2(env, eAssocParams);
+ }
+
+ SSDBG( descP,
+ ("SOCKET", "ngetopt_lvl_sctp_associnfo -> done with"
+ "\r\n res: %d"
+ "\r\n result: %T"
+ "\r\n", res, result) );
+
+ return result;
+}
+#endif
+
+
+/* ngetopt_lvl_sctp_autoclose - Level SCTP AUTOCLOSE option
+ */
+#if defined(SCTP_AUTOCLOSE)
+static
+ERL_NIF_TERM ngetopt_lvl_sctp_autoclose(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+ return ngetopt_int_opt(env, descP, IPPROTO_SCTP, SCTP_AUTOCLOSE);
+}
+#endif
+
+
+/* ngetopt_lvl_sctp_disable_fragments - Level SCTP DISABLE:FRAGMENTS option
+ */
+#if defined(SCTP_DISABLE_FRAGMENTS)
+static
+ERL_NIF_TERM ngetopt_lvl_sctp_disable_fragments(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+ return ngetopt_bool_opt(env, descP, IPPROTO_SCTP, SCTP_DISABLE_FRAGMENTS);
+}
+#endif
+
+
+/* ngetopt_lvl_sctp_initmsg - Level SCTP INITMSG option
+ *
+ */
+#if defined(SCTP_INITMSG)
+static
+ERL_NIF_TERM ngetopt_lvl_sctp_initmsg(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+ ERL_NIF_TERM result;
+ struct sctp_initmsg val;
+ SOCKOPTLEN_T valSz = sizeof(val);
+ int res;
+
+ SSDBG( descP, ("SOCKET", "ngetopt_lvl_sctp_initmsg -> entry\r\n") );
+
+ sys_memzero((char*) &val, valSz);
+ res = sock_getopt(descP->sock, IPPROTO_SCTP, SCTP_INITMSG, &val, &valSz);
+
+ if (res != 0) {
+ result = esock_make_error_errno(env, sock_errno());
+ } else {
+ ERL_NIF_TERM eInitMsg;
+ ERL_NIF_TERM keys[] = {atom_num_outstreams, atom_max_instreams,
+ atom_max_attempts, atom_max_init_timeo};
+ ERL_NIF_TERM vals[] = {MKUI(env, val.sinit_num_ostreams),
+ MKUI(env, val.sinit_max_instreams),
+ MKUI(env, val.sinit_max_attempts),
+ MKUI(env, val.sinit_max_init_timeo)};
+ unsigned int numKeys = sizeof(keys) / sizeof(ERL_NIF_TERM);
+ unsigned int numVals = sizeof(vals) / sizeof(ERL_NIF_TERM);
+
+ ESOCK_ASSERT( (numKeys == numVals) );
+
+ if (!MKMA(env, keys, vals, numKeys, &eInitMsg))
+ return esock_make_error(env, esock_atom_einval);;
+
+ result = esock_make_ok2(env, eInitMsg);
+ }
+
+ SSDBG( descP,
+ ("SOCKET", "ngetopt_lvl_sctp_initmsg -> done with"
+ "\r\n res: %d"
+ "\r\n result: %T"
+ "\r\n", res, result) );
+
+ return result;
+}
+#endif
+
+
+/* ngetopt_lvl_sctp_maxseg - Level SCTP MAXSEG option
+ */
+#if defined(SCTP_MAXSEG)
+static
+ERL_NIF_TERM ngetopt_lvl_sctp_maxseg(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+ return ngetopt_int_opt(env, descP, IPPROTO_SCTP, SCTP_MAXSEG);
+}
+#endif
+
+
+/* ngetopt_lvl_sctp_nodelay - Level SCTP NODELAY option
+ */
+#if defined(SCTP_NODELAY)
+static
+ERL_NIF_TERM ngetopt_lvl_sctp_nodelay(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+ return ngetopt_bool_opt(env, descP, IPPROTO_SCTP, SCTP_NODELAY);
+}
+#endif
+
+
+/* ngetopt_lvl_sctp_associnfo - Level SCTP ASSOCINFO option
+ *
+ * <KOLLA>
+ *
+ * We should really specify which association this relates to,
+ * as it is now we get assoc-id = 0. If this socket is an
+ * association (and not an endpoint) then it will have an
+ * assoc id (we can assume). But since the sctp support at
+ * present is "limited", we leave it for now.
+ * What do we do if this is an endpoint? Invalid op?
+ *
+ * </KOLLA>
+ */
+#if defined(SCTP_RTOINFO)
+static
+ERL_NIF_TERM ngetopt_lvl_sctp_rtoinfo(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+ ERL_NIF_TERM result;
+ struct sctp_rtoinfo val;
+ SOCKOPTLEN_T valSz = sizeof(val);
+ int res;
+
+ SSDBG( descP, ("SOCKET", "ngetopt_lvl_sctp_rtoinfo -> entry\r\n") );
+
+ sys_memzero((char*) &val, valSz);
+ res = sock_getopt(descP->sock, IPPROTO_SCTP, SCTP_RTOINFO, &val, &valSz);
+
+ if (res != 0) {
+ result = esock_make_error_errno(env, sock_errno());
+ } else {
+ ERL_NIF_TERM eRTOInfo;
+ ERL_NIF_TERM keys[] = {atom_assoc_id, atom_initial, atom_max, atom_min};
+ ERL_NIF_TERM vals[] = {MKUI(env, val.srto_assoc_id),
+ MKUI(env, val.srto_initial),
+ MKUI(env, val.srto_max),
+ MKUI(env, val.srto_min)};
+ unsigned int numKeys = sizeof(keys) / sizeof(ERL_NIF_TERM);
+ unsigned int numVals = sizeof(vals) / sizeof(ERL_NIF_TERM);
+
+ ESOCK_ASSERT( (numKeys == numVals) );
+
+ if (!MKMA(env, keys, vals, numKeys, &eRTOInfo))
+ return esock_make_error(env, esock_atom_einval);;
+
+ result = esock_make_ok2(env, eRTOInfo);
+ }
+
+ SSDBG( descP,
+ ("SOCKET", "ngetopt_lvl_sctp_rtoinfo -> done with"
+ "\r\n res: %d"
+ "\r\n result: %T"
+ "\r\n", res, result) );
+
+ return result;
+}
+#endif
+
+
+
+#endif // defined(HAVE_SCTP)
+
+
+
+/* ngetopt_bool_opt - get an (integer) bool option
+ */
+static
+ERL_NIF_TERM ngetopt_bool_opt(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ int level,
+ int opt)
+{
+ ERL_NIF_TERM result;
+ int val;
+ SOCKOPTLEN_T valSz = sizeof(val);
+ int res;
+
+ /*
+ SSDBG( descP, ("SOCKET", "ngetopt_bool_opt -> entry with"
+ "\r\n: level: %d"
+ "\r\n: opt: %d"
+ "\r\n", level, opt) );
+ */
+
+ res = sock_getopt(descP->sock, level, opt, &val, &valSz);
+
+ if (res != 0) {
+ result = esock_make_error_errno(env, sock_errno());
+ } else {
+ ERL_NIF_TERM bval = ((val) ? atom_true : atom_false);
+
+ result = esock_make_ok2(env, bval);
+ }
+
+ /*
+ SSDBG( descP, ("SOCKET", "ngetopt_bool_opt -> done when"
+ "\r\n: res: %d"
+ "\r\n: result: %T"
+ "\r\n", res, result) );
+ */
+
+ return result;
+}
+
+
+/* ngetopt_int_opt - get an integer option
+ */
+static
+ERL_NIF_TERM ngetopt_int_opt(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ int level,
+ int opt)
+{
+ ERL_NIF_TERM result;
+ int val;
+ SOCKOPTLEN_T valSz = sizeof(val);
+ int res;
+
+ res = sock_getopt(descP->sock, level, opt, &val, &valSz);
+
+ if (res != 0) {
+ result = esock_make_error_errno(env, sock_errno());
+ } else {
+ result = esock_make_ok2(env, MKI(env, val));
+ }
+
+ return result;
+}
+
+
+
+/* ngetopt_timeval_opt - get an timeval option
+ */
+static
+ERL_NIF_TERM ngetopt_timeval_opt(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ int level,
+ int opt)
+{
+ ERL_NIF_TERM result;
+ struct timeval val;
+ SOCKOPTLEN_T valSz = sizeof(val);
+ int res;
+
+ SSDBG( descP,
+ ("SOCKET", "ngetopt_timeval_opt -> entry with"
+ "\r\n level: %d"
+ "\r\n opt: %d"
+ "\r\n", level, opt) );
+
+ sys_memzero((char*) &val, valSz);
+ res = sock_getopt(descP->sock, level, opt, &val, &valSz);
+
+ if (res != 0) {
+ result = esock_make_error_errno(env, sock_errno());
+ } else {
+ ERL_NIF_TERM eTimeVal;
+ char* xres;
+
+ if ((xres = esock_encode_timeval(env, &val, &eTimeVal)) != NULL)
+ result = esock_make_error_str(env, xres);
+ else
+ result = esock_make_ok2(env, eTimeVal);
+ }
+
+ SSDBG( descP,
+ ("SOCKET", "ngetopt_timeval_opt -> done when"
+ "\r\n result: %T"
+ "\r\n", result) );
+
+ return result;
+}
+
+
+
+/* ngetopt_str_opt - get an string option
+ *
+ * We provide the max size of the string. This is the
+ * size of the buffer we allocate for the value.
+ * The actual size of the (read) value will be communicated
+ * in the optSz variable.
+ */
+static
+ERL_NIF_TERM ngetopt_str_opt(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ int level,
+ int opt,
+ int max)
+{
+ ERL_NIF_TERM result;
+ char* val = MALLOC(max);
+ SOCKOPTLEN_T valSz = max;
+ int res;
+
+ SSDBG( descP,
+ ("SOCKET", "ngetopt_str_opt -> entry with"
+ "\r\n level: %d"
+ "\r\n opt: %d"
+ "\r\n max: %d"
+ "\r\n", level, opt, max) );
+
+ res = sock_getopt(descP->sock, level, opt, val, &valSz);
+
+ if (res != 0) {
+ result = esock_make_error_errno(env, sock_errno());
+ } else {
+ ERL_NIF_TERM sval = MKSL(env, val, valSz);
+
+ result = esock_make_ok2(env, sval);
+ }
+
+ SSDBG( descP,
+ ("SOCKET", "ngetopt_str_opt -> done when"
+ "\r\n result: %T"
+ "\r\n", result) );
+
+ FREE(val);
+
+ return result;
+}
+#endif // if !defined(__WIN32__)
+
+
+
+/* ----------------------------------------------------------------------
+ * nif_sockname - get socket name
+ *
+ * Description:
+ * Returns the current address to which the socket is bound.
+ *
+ * Arguments:
+ * Socket (ref) - Points to the socket descriptor.
+ */
+
+static
+ERL_NIF_TERM nif_sockname(ErlNifEnv* env,
+ int argc,
+ const ERL_NIF_TERM argv[])
+{
+#if defined(__WIN32__)
+ return enif_raise_exception(env, MKA(env, "notsup"));
+#else
+ SocketDescriptor* descP;
+ ERL_NIF_TERM res;
+
+ SGDBG( ("SOCKET", "nif_sockname -> entry with argc: %d\r\n", argc) );
+
+ /* Extract arguments and perform preliminary validation */
+
+ if ((argc != 1) ||
+ !enif_get_resource(env, argv[0], sockets, (void**) &descP)) {
+ return enif_make_badarg(env);
+ }
+
+ if (IS_CLOSED(descP) || IS_CLOSING(descP))
+ return esock_make_error(env, atom_closed);
+
+ SSDBG( descP,
+ ("SOCKET", "nif_sockname -> args when sock = %d:"
+ "\r\n Socket: %T"
+ "\r\n", descP->sock, argv[0]) );
+
+ res = nsockname(env, descP);
+
+ SSDBG( descP, ("SOCKET", "nif_sockname -> done with res = %T\r\n", res) );
+
+ return res;
+#endif // if defined(__WIN32__)
+}
+
+
+
+#if !defined(__WIN32__)
+static
+ERL_NIF_TERM nsockname(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+ SocketAddress sa;
+ SocketAddress* saP = &sa;
+ unsigned int sz = sizeof(SocketAddress);
+
+ sys_memzero((char*) saP, sz);
+ if (IS_SOCKET_ERROR(sock_name(descP->sock, (struct sockaddr*) saP, &sz))) {
+ return esock_make_error_errno(env, sock_errno());
+ } else {
+ ERL_NIF_TERM esa;
+ char* xres;
+
+ if ((xres = esock_encode_sockaddr(env, saP, sz, &esa)) != NULL)
+ return esock_make_error_str(env, xres);
+ else
+ return esock_make_ok2(env, esa);
+ }
+}
+#endif // if !defined(__WIN32__)
+
+
+
+/* ----------------------------------------------------------------------
+ * nif_peername - get name of the connected peer socket
+ *
+ * Description:
+ * Returns the address of the peer connected to the socket.
+ *
+ * Arguments:
+ * Socket (ref) - Points to the socket descriptor.
+ */
+
+static
+ERL_NIF_TERM nif_peername(ErlNifEnv* env,
+ int argc,
+ const ERL_NIF_TERM argv[])
+{
+#if defined(__WIN32__)
+ return enif_raise_exception(env, MKA(env, "notsup"));
+#else
+ SocketDescriptor* descP;
+ ERL_NIF_TERM res;
+
+ SGDBG( ("SOCKET", "nif_peername -> entry with argc: %d\r\n", argc) );
+
+ /* Extract arguments and perform preliminary validation */
+
+ if ((argc != 1) ||
+ !enif_get_resource(env, argv[0], sockets, (void**) &descP)) {
+ return enif_make_badarg(env);
+ }
+
+ if (IS_CLOSED(descP) || IS_CLOSING(descP))
+ return esock_make_error(env, atom_closed);
+
+ SSDBG( descP,
+ ("SOCKET", "nif_peername -> args when sock = %d:"
+ "\r\n Socket: %T"
+ "\r\n", descP->sock, argv[0]) );
+
+ res = npeername(env, descP);
+
+ SSDBG( descP, ("SOCKET", "nif_peername -> done with res = %T\r\n", res) );
+
+ return res;
+#endif // if defined(__WIN32__)
+}
+
+
+
+#if !defined(__WIN32__)
+static
+ERL_NIF_TERM npeername(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+ SocketAddress sa;
+ SocketAddress* saP = &sa;
+ unsigned int sz = sizeof(SocketAddress);
+
+ sys_memzero((char*) saP, sz);
+ if (IS_SOCKET_ERROR(sock_peer(descP->sock, (struct sockaddr*) saP, &sz))) {
+ return esock_make_error_errno(env, sock_errno());
+ } else {
+ ERL_NIF_TERM esa;
+ char* xres;
+
+ if ((xres = esock_encode_sockaddr(env, saP, sz, &esa)) != NULL)
+ return esock_make_error_str(env, xres);
+ else
+ return esock_make_ok2(env, esa);
+ }
+}
+#endif // if !defined(__WIN32__)
+
+
+
+/* ----------------------------------------------------------------------
+ * nif_cancel
+ *
+ * Description:
+ * Cancel a previous select!
+ *
+ * Arguments:
+ * Socket (ref) - Points to the socket descriptor.
+ * Operation (atom) - What kind of operation (accept, send, ...) is to be cancelled
+ * Ref (ref) - Unique id for the operation
+ */
+static
+ERL_NIF_TERM nif_cancel(ErlNifEnv* env,
+ int argc,
+ const ERL_NIF_TERM argv[])
+{
+#if defined(__WIN32__)
+ return enif_raise_exception(env, MKA(env, "notsup"));
+#else
+ SocketDescriptor* descP;
+ ERL_NIF_TERM op, opRef, result;
+
+ SGDBG( ("SOCKET", "nif_cancel -> entry with argc: %d\r\n", argc) );
+
+ /* Extract arguments and perform preliminary validation */
+
+ if ((argc != 3) ||
+ !enif_get_resource(env, argv[0], sockets, (void**) &descP)) {
+ return enif_make_badarg(env);
+ }
+ op = argv[1];
+ opRef = argv[2];
+
+ if (IS_CLOSED(descP) || IS_CLOSING(descP))
+ return esock_make_error(env, atom_closed);
+
+ SSDBG( descP,
+ ("SOCKET", "nif_cancel -> args when sock = %d:"
+ "\r\n op: %T"
+ "\r\n opRef: %T"
+ "\r\n", descP->sock, op, opRef) );
+
+ result = ncancel(env, descP, op, opRef);
+
+ SSDBG( descP,
+ ("SOCKET", "nif_cancel -> done with result: "
+ "\r\n %T"
+ "\r\n", result) );
+
+ return result;
+#endif // if !defined(__WIN32__)
+}
+
+
+#if !defined(__WIN32__)
+static
+ERL_NIF_TERM ncancel(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM op,
+ ERL_NIF_TERM opRef)
+{
+ /* <KOLLA>
+ *
+ * Do we really need all these variants? Should it not be enough with:
+ *
+ * connect | accept | send | recv
+ *
+ * </KOLLA>
+ */
+ if (COMPARE(op, esock_atom_connect) == 0) {
+ return ncancel_connect(env, descP, opRef);
+ } else if (COMPARE(op, esock_atom_accept) == 0) {
+ return ncancel_accept(env, descP, opRef);
+ } else if (COMPARE(op, esock_atom_send) == 0) {
+ return ncancel_send(env, descP, opRef);
+ } else if (COMPARE(op, esock_atom_sendto) == 0) {
+ return ncancel_send(env, descP, opRef);
+ } else if (COMPARE(op, esock_atom_sendmsg) == 0) {
+ return ncancel_send(env, descP, opRef);
+ } else if (COMPARE(op, esock_atom_recv) == 0) {
+ return ncancel_recv(env, descP, opRef);
+ } else if (COMPARE(op, esock_atom_recvfrom) == 0) {
+ return ncancel_recv(env, descP, opRef);
+ } else if (COMPARE(op, esock_atom_recvmsg) == 0) {
+ return ncancel_recv(env, descP, opRef);
+ } else {
+ return esock_make_error(env, esock_atom_einval);
+ }
+}
+
+
+
+/* *** ncancel_connect ***
+ *
+ *
+ */
+static
+ERL_NIF_TERM ncancel_connect(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM opRef)
+{
+ return ncancel_write_select(env, descP, opRef);
+}
+
+
+/* *** ncancel_accept ***
+ *
+ * We have two different cases:
+ * *) Its the current acceptor
+ * Cancel the select!
+ * We need to activate one of the waiting acceptors.
+ * *) Its one of the acceptors ("waiting") in the queue
+ * Simply remove the acceptor from the queue.
+ *
+ */
+static
+ERL_NIF_TERM ncancel_accept(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM opRef)
+{
+ ERL_NIF_TERM res;
+
+ SSDBG( descP,
+ ("SOCKET", "ncancel_accept -> entry with"
+ "\r\n opRef: %T"
+ "\r\n %s"
+ "\r\n", opRef,
+ ((descP->currentAcceptorP == NULL) ? "without acceptor" : "with acceptor")) );
+
+ MLOCK(descP->accMtx);
+
+ if (descP->currentAcceptorP != NULL) {
+ if (COMPARE(opRef, descP->currentAcceptor.ref) == 0) {
+ res = ncancel_accept_current(env, descP);
+ } else {
+ res = ncancel_accept_waiting(env, descP, opRef);
+ }
+ } else {
+ /* Or badarg? */
+ res = esock_make_error(env, esock_atom_einval);
+ }
+
+ MUNLOCK(descP->accMtx);
+
+ SSDBG( descP,
+ ("SOCKET", "ncancel_accept -> done with result:"
+ "\r\n %T"
+ "\r\n", res) );
+
+ return res;
+}
+
+
+/* The current acceptor process has an ongoing select we first must
+ * cancel. Then we must re-activate the "first" (the first
+ * in the acceptor queue).
+ */
+static
+ERL_NIF_TERM ncancel_accept_current(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+ int sres;
+ ERL_NIF_TERM res;
+
+ SSDBG( descP, ("SOCKET", "ncancel_accept_current -> entry\r\n") );
+
+ DEMONP("ncancel_accept_current -> current acceptor",
+ env, descP, &descP->currentAcceptor.mon);
+ res = ncancel_read_select(env, descP, descP->currentAcceptor.ref);
+
+ SSDBG( descP, ("SOCKET", "ncancel_accept_current -> cancel res: %T\r\n", res) );
+
+ if (acceptor_pop(env, descP,
+ &descP->currentAcceptor.pid,
+ &descP->currentAcceptor.mon,
+ &descP->currentAcceptor.ref)) {
+
+ /* There was another one */
+
+ SSDBG( descP, ("SOCKET", "ncancel_accept_current -> new (active) acceptor: "
+ "\r\n pid: %T"
+ "\r\n ref: %T"
+ "\r\n",
+ descP->currentAcceptor.pid,
+ descP->currentAcceptor.ref) );
+
+ if ((sres = esock_select_read(env, descP->sock, descP,
+ &descP->currentAcceptor.pid,
+ descP->currentAcceptor.ref)) < 0) {
+ return esock_make_error(env,
+ MKT2(env,
+ esock_atom_select_failed,
+ MKI(env, sres)));
+ }
+ } else {
+ SSDBG( descP, ("SOCKET", "ncancel_accept_current -> no more acceptors\r\n") );
+ descP->currentAcceptorP = NULL;
+ descP->state = SOCKET_STATE_LISTENING;
+ }
+
+ SSDBG( descP, ("SOCKET", "ncancel_accept_current -> done with result:"
+ "\r\n %T"
+ "\r\n", res) );
+
+ return res;
+}
+
+
+/* These processes have not performed a select, so we can simply
+ * remove them from the acceptor queue.
+ */
+static
+ERL_NIF_TERM ncancel_accept_waiting(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM opRef)
+{
+ ErlNifPid caller;
+
+ if (enif_self(env, &caller) == NULL)
+ return esock_make_error(env, atom_exself);
+
+ /* unqueue request from (acceptor) queue */
+
+ if (acceptor_unqueue(env, descP, &caller)) {
+ return esock_atom_ok;
+ } else {
+ /* Race? */
+ return esock_make_error(env, esock_atom_not_found);
+ }
+}
+
+
+
+/* *** ncancel_send ***
+ *
+ * Cancel a send operation.
+ * Its either the current writer or one of the waiting writers.
+ */
+static
+ERL_NIF_TERM ncancel_send(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM opRef)
+{
+ ERL_NIF_TERM res;
+
+ MLOCK(descP->writeMtx);
+
+ SSDBG( descP,
+ ("SOCKET", "ncancel_send -> entry with"
+ "\r\n opRef: %T"
+ "\r\n %s"
+ "\r\n", opRef,
+ ((descP->currentWriterP == NULL) ? "without writer" : "with writer")) );
+
+ if (descP->currentWriterP != NULL) {
+ if (COMPARE(opRef, descP->currentWriter.ref) == 0) {
+ res = ncancel_send_current(env, descP);
+ } else {
+ res = ncancel_send_waiting(env, descP, opRef);
+ }
+ } else {
+ /* Or badarg? */
+ res = esock_make_error(env, esock_atom_einval);
+ }
+
+ MUNLOCK(descP->writeMtx);
+
+ SSDBG( descP,
+ ("SOCKET", "ncancel_send -> done with result:"
+ "\r\n %T"
+ "\r\n", res) );
+
+ return res;
+}
+
+
+
+/* The current writer process has an ongoing select we first must
+ * cancel. Then we must re-activate the "first" (the first
+ * in the writer queue).
+ */
+static
+ERL_NIF_TERM ncancel_send_current(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+ int sres;
+ ERL_NIF_TERM res;
+
+ SSDBG( descP, ("SOCKET", "ncancel_send_current -> entry\r\n") );
+
+ DEMONP("ncancel_recv_current -> current writer",
+ env, descP, &descP->currentWriter.mon);
+ res = ncancel_write_select(env, descP, descP->currentWriter.ref);
+
+ SSDBG( descP, ("SOCKET", "ncancel_send_current -> cancel res: %T\r\n", res) );
+
+ if (writer_pop(env, descP,
+ &descP->currentWriter.pid,
+ &descP->currentWriter.mon,
+ &descP->currentWriter.ref)) {
+
+ /* There was another one */
+
+ SSDBG( descP, ("SOCKET", "ncancel_send_current -> new (active) writer: "
+ "\r\n pid: %T"
+ "\r\n ref: %T"
+ "\r\n",
+ descP->currentWriter.pid,
+ descP->currentWriter.ref) );
+
+ if ((sres = esock_select_write(env, descP->sock, descP,
+ &descP->currentWriter.pid,
+ descP->currentWriter.ref)) < 0) {
+ return esock_make_error(env,
+ MKT2(env,
+ esock_atom_select_failed,
+ MKI(env, sres)));
+ }
+ } else {
+ SSDBG( descP, ("SOCKET", "ncancel_send_current -> no more writers\r\n") );
+ descP->currentWriterP = NULL;
+ }
+
+ SSDBG( descP, ("SOCKET", "ncancel_send_current -> done with result:"
+ "\r\n %T"
+ "\r\n", res) );
+
+ return res;
+}
+
+
+/* These processes have not performed a select, so we can simply
+ * remove them from the writer queue.
+ */
+static
+ERL_NIF_TERM ncancel_send_waiting(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM opRef)
+{
+ ErlNifPid caller;
+
+ if (enif_self(env, &caller) == NULL)
+ return esock_make_error(env, atom_exself);
+
+ /* unqueue request from (writer) queue */
+
+ if (writer_unqueue(env, descP, &caller)) {
+ return esock_atom_ok;
+ } else {
+ /* Race? */
+ return esock_make_error(env, esock_atom_not_found);
+ }
+}
+
+
+
+/* *** ncancel_recv ***
+ *
+ * Cancel a read operation.
+ * Its either the current reader or one of the waiting readers.
+ */
+static
+ERL_NIF_TERM ncancel_recv(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM opRef)
+{
+ ERL_NIF_TERM res;
+
+ MLOCK(descP->readMtx);
+
+ SSDBG( descP,
+ ("SOCKET", "ncancel_recv -> entry with"
+ "\r\n opRef: %T"
+ "\r\n %s"
+ "\r\n", opRef,
+ ((descP->currentReaderP == NULL) ? "without reader" : "with reader")) );
+
+ if (descP->currentReaderP != NULL) {
+ if (COMPARE(opRef, descP->currentReader.ref) == 0) {
+ res = ncancel_recv_current(env, descP);
+ } else {
+ res = ncancel_recv_waiting(env, descP, opRef);
+ }
+ } else {
+ /* Or badarg? */
+ res = esock_make_error(env, esock_atom_einval);
+ }
+
+ MUNLOCK(descP->readMtx);
+
+ SSDBG( descP,
+ ("SOCKET", "ncancel_recv -> done with result:"
+ "\r\n %T"
+ "\r\n", res) );
+
+ return res;
+}
+
+
+/* The current reader process has an ongoing select we first must
+ * cancel. Then we must re-activate the "first" (the first
+ * in the reader queue).
+ */
+static
+ERL_NIF_TERM ncancel_recv_current(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+ int sres;
+ ERL_NIF_TERM res;
+
+ SSDBG( descP, ("SOCKET", "ncancel_recv_current -> entry\r\n") );
+
+ DEMONP("ncancel_recv_current -> current reader",
+ env, descP, &descP->currentReader.mon);
+ res = ncancel_read_select(env, descP, descP->currentReader.ref);
+
+ SSDBG( descP, ("SOCKET", "ncancel_recv_current -> cancel res: %T\r\n", res) );
+
+ if (reader_pop(env, descP,
+ &descP->currentReader.pid,
+ &descP->currentReader.mon,
+ &descP->currentReader.ref)) {
+
+ /* There was another one */
+
+ SSDBG( descP, ("SOCKET", "ncancel_recv_current -> new (active) reader: "
+ "\r\n pid: %T"
+ "\r\n ref: %T"
+ "\r\n",
+ descP->currentReader.pid,
+ descP->currentReader.ref) );
+
+ if ((sres = esock_select_read(env, descP->sock, descP,
+ &descP->currentReader.pid,
+ descP->currentReader.ref)) < 0) {
+ return esock_make_error(env,
+ MKT2(env,
+ esock_atom_select_failed,
+ MKI(env, sres)));
+ }
+ } else {
+ SSDBG( descP, ("SOCKET", "ncancel_recv_current -> no more readers\r\n") );
+ descP->currentReaderP = NULL;
+ }
+
+ SSDBG( descP, ("SOCKET", "ncancel_recv_current -> done with result:"
+ "\r\n %T"
+ "\r\n", res) );
+
+ return res;
+}
+
+
+/* These processes have not performed a select, so we can simply
+ * remove them from the reader queue.
+ */
+static
+ERL_NIF_TERM ncancel_recv_waiting(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM opRef)
+{
+ ErlNifPid caller;
+
+ if (enif_self(env, &caller) == NULL)
+ return esock_make_error(env, atom_exself);
+
+ /* unqueue request from (reader) queue */
+
+ if (reader_unqueue(env, descP, &caller)) {
+ return esock_atom_ok;
+ } else {
+ /* Race? */
+ return esock_make_error(env, esock_atom_not_found);
+ }
+}
+
+
+
+static
+ERL_NIF_TERM ncancel_read_select(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM opRef)
+{
+ return ncancel_mode_select(env, descP, opRef,
+ ERL_NIF_SELECT_READ,
+ ERL_NIF_SELECT_READ_CANCELLED);
+}
+
+
+static
+ERL_NIF_TERM ncancel_write_select(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM opRef)
+{
+ return ncancel_mode_select(env, descP, opRef,
+ ERL_NIF_SELECT_WRITE,
+ ERL_NIF_SELECT_WRITE_CANCELLED);
+}
+
+
+static
+ERL_NIF_TERM ncancel_mode_select(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM opRef,
+ int smode,
+ int rmode)
+{
+ int selectRes = esock_select_cancel(env, descP->sock, smode, descP);
+
+ if (selectRes & rmode) {
+ /* Was cancelled */
+ return esock_atom_ok;
+ } else if (selectRes > 0) {
+ /* Has already sent the message */
+ return esock_make_error(env, esock_atom_select_sent);
+ } else {
+ /* Stopped? */
+ SSDBG( descP, ("SOCKET", "ncancel_mode_select -> failed: %d (0x%lX)"
+ "\r\n", selectRes, selectRes) );
+ return esock_make_error(env, esock_atom_einval);
+ }
+
+}
+#endif // if !defined(__WIN32__)
+
+
+
+
+/* ----------------------------------------------------------------------
+ * U t i l i t y F u n c t i o n s
+ * ----------------------------------------------------------------------
+ */
+
+/* *** send_check_writer ***
+ *
+ * Checks if we have a current writer and if that is us. If not, then we must
+ * be made to wait for our turn. This is done by pushing us unto the writer queue.
+ */
+#if !defined(__WIN32__)
+static
+BOOLEAN_T send_check_writer(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM ref,
+ ERL_NIF_TERM* checkResult)
+{
+ if (descP->currentWriterP != NULL) {
+ ErlNifPid caller;
+
+ if (enif_self(env, &caller) == NULL) {
+ *checkResult = esock_make_error(env, atom_exself);
+ return FALSE;
+ }
+
+ if (!compare_pids(env, &descP->currentWriter.pid, &caller)) {
+ /* Not the "current writer", so (maybe) push onto queue */
+
+ SSDBG( descP,
+ ("SOCKET", "send_check_writer -> not (current) writer\r\n") );
+
+ if (!writer_search4pid(env, descP, &caller))
+ *checkResult = writer_push(env, descP, caller, ref);
+ else
+ *checkResult = esock_make_error(env, esock_atom_eagain);
+
+ SSDBG( descP,
+ ("SOCKET",
+ "send_check_writer -> queue (push) result: %T\r\n",
+ checkResult) );
+
+ return FALSE;
+
+ }
+
+ }
+
+ *checkResult = esock_atom_ok; // Does not actually matter in this case, but ...
+
+ return TRUE;
+}
+
+
+
+/* *** send_check_result ***
+ *
+ * Check the result of a socket send (send, sendto and sendmsg) call.
+ * If a "complete" send has been made, the next (waiting) writer will be
+ * scheduled (if there is one).
+ * If we did not manage to send the entire package, make another select,
+ * so that we can be informed when we can make another try (to send the rest),
+ * and return with the amount we actually managed to send (its up to the caller
+ * (that is the erlang code) to figure out hust much is left to send).
+ * If the write fail, we give up and return with the appropriate error code.
+ *
+ * What about the remaining writers!!
+ */
+static
+ERL_NIF_TERM send_check_result(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ssize_t written,
+ ssize_t dataSize,
+ int saveErrno,
+ ERL_NIF_TERM sockRef,
+ ERL_NIF_TERM sendRef)
+{
+ int sres;
+
+ SSDBG( descP,
+ ("SOCKET", "send_check_result -> entry with"
+ "\r\n written: %d"
+ "\r\n dataSize: %d"
+ "\r\n saveErrno: %d"
+ "\r\n", written, dataSize, saveErrno) );
+
+ if (written >= dataSize) {
+
+ cnt_inc(&descP->writePkgCnt, 1);
+ cnt_inc(&descP->writeByteCnt, written);
+ if (descP->currentWriterP != NULL)
+ DEMONP("send_check_result -> current writer",
+ env, descP, &descP->currentWriter.mon);
+
+ SSDBG( descP,
+ ("SOCKET", "send_check_result -> "
+ "everything written (%d,%d) - done\r\n", dataSize, written) );
+
+ /* Ok, this write is done maybe activate the next (if any) */
+
+ if (writer_pop(env, descP,
+ &descP->currentWriter.pid,
+ &descP->currentWriter.mon,
+ &descP->currentWriter.ref)) {
+
+ /* There was another one */
+
+ SSDBG( descP, ("SOCKET", "send_check_result -> new (active) writer: "
+ "\r\n pid: %T"
+ "\r\n ref: %T"
+ "\r\n",
+ descP->currentWriter.pid,
+ descP->currentWriter.ref) );
+
+ if ((sres = esock_select_write(env, descP->sock, descP,
+ &descP->currentWriter.pid,
+ descP->currentWriter.ref)) < 0) {
+ return esock_make_error(env,
+ MKT2(env,
+ esock_atom_select_failed,
+ MKI(env, sres)));
+ }
+ } else {
+ descP->currentWriterP = NULL;
+ }
+
+ return esock_atom_ok;
+
+ } else if (written < 0) {
+
+ /* Some kind of send failure - check what kind */
+
+ if ((saveErrno != EAGAIN) && (saveErrno != EINTR)) {
+ ErlNifPid pid;
+ // ErlNifMonitor mon;
+ ESockMonitor mon;
+ ERL_NIF_TERM ref, res;
+
+ /*
+ * An actual failure - we (and everyone waiting) give up
+ */
+
+ cnt_inc(&descP->writeFails, 1);
+
+ SSDBG( descP,
+ ("SOCKET", "send_check_result -> error: %d\r\n", saveErrno) );
+
+ res = esock_make_error_errno(env, saveErrno);
+
+ if (descP->currentWriterP != NULL) {
+ DEMONP("send_check_result -> current writer",
+ env, descP, &descP->currentWriter.mon);
+
+ while (writer_pop(env, descP, &pid, &mon, &ref)) {
+ SSDBG( descP,
+ ("SOCKET", "send_check_result -> abort %T\r\n", pid) );
+ esock_send_abort_msg(env, sockRef, ref, res, &pid);
+ DEMONP("send_check_result -> pop'ed writer",
+ env, descP, &mon);
+ }
+ }
+
+ return res;
+
+ } else {
+ /* Ok, try again later */
+
+ SSDBG( descP, ("SOCKET", "send_check_result -> try again\r\n") );
+ }
+
+ }
+ else {
+ SSDBG( descP,
+ ("SOCKET", "send_check_result -> "
+ "not entire package written (%d of %d)\r\n", written, dataSize) );
+ }
+
+ /* We failed to write the *entire* packet (anything less then size
+ * of the packet, which is 0 <= written < sizeof packet),
+ * so schedule the rest for later.
+ */
+
+ if (descP->currentWriterP == NULL) {
+ ErlNifPid caller;
+
+ if (enif_self(env, &caller) == NULL)
+ return esock_make_error(env, atom_exself);
+ descP->currentWriter.pid = caller;
+ if (MONP("send_check_result -> current writer",
+ env, descP,
+ &descP->currentWriter.pid,
+ &descP->currentWriter.mon) != 0)
+ return esock_make_error(env, atom_exmon);
+ descP->currentWriter.ref = enif_make_copy(descP->env, sendRef);
+ descP->currentWriterP = &descP->currentWriter;
+ }
+
+ cnt_inc(&descP->writeWaits, 1);
+
+ sres = esock_select_write(env, descP->sock, descP, NULL, sendRef);
+
+ if (written >= 0) {
+ if (sres < 0) {
+ /* Returned: {error, Reason}
+ * Reason: {select_failed, sres, written}
+ */
+ return esock_make_error(env,
+ MKT3(env,
+ esock_atom_select_failed,
+ MKI(env, sres),
+ MKI(env, written)));
+ } else {
+ return esock_make_ok2(env, MKI(env, written));
+ }
+ } else {
+ if (sres < 0) {
+ /* Returned: {error, Reason}
+ * Reason: {select_failed, sres}
+ */
+ return esock_make_error(env,
+ MKT2(env,
+ esock_atom_select_failed,
+ MKI(env, sres)));
+ } else {
+ return esock_make_error(env, esock_atom_eagain);
+ }
+ }
+}
+
+
+
+/* *** recv_check_reader ***
+ *
+ * Checks if we have a current reader and if that is us. If not, then we must
+ * be made to wait for our turn. This is done by pushing us unto the reader queue.
+ */
+static
+BOOLEAN_T recv_check_reader(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM ref,
+ ERL_NIF_TERM* checkResult)
+{
+ if (descP->currentReaderP != NULL) {
+ ErlNifPid caller;
+
+ if (enif_self(env, &caller) == NULL) {
+ *checkResult = esock_make_error(env, atom_exself);
+ return FALSE;
+ }
+
+ if (!compare_pids(env, &descP->currentReader.pid, &caller)) {
+ ERL_NIF_TERM tmp;
+
+ /* Not the "current reader", so (maybe) push onto queue */
+
+ SSDBG( descP,
+ ("SOCKET", "recv_check_reader -> not (current) reader\r\n") );
+
+ if (!reader_search4pid(env, descP, &caller))
+ tmp = reader_push(env, descP, caller, ref);
+ else
+ tmp = esock_make_error(env, esock_atom_eagain);
+
+ SSDBG( descP,
+ ("SOCKET",
+ "recv_check_reader -> queue (push) result: %T\r\n", tmp) );
+
+ *checkResult = tmp;
+
+ return FALSE;
+
+ }
+
+ }
+
+ *checkResult = esock_atom_ok; // Does not actually matter in this case, but ...
+
+ return TRUE;
+}
+
+
+
+/* *** recv_init_current_reader ***
+ *
+ * Initiate (maybe) the currentReader structure of the descriptor.
+ * Including monitoring the calling process.
+ */
+static
+char* recv_init_current_reader(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM recvRef)
+{
+ if (descP->currentReaderP == NULL) {
+ ErlNifPid caller;
+
+ if (enif_self(env, &caller) == NULL)
+ return str_exself;
+
+ descP->currentReader.pid = caller;
+ if (MONP("recv_init_current_reader -> current reader",
+ env, descP,
+ &descP->currentReader.pid,
+ &descP->currentReader.mon) != 0) {
+ return str_exmon;
+ }
+ descP->currentReader.ref = enif_make_copy(descP->env, recvRef);
+ descP->currentReaderP = &descP->currentReader;
+ }
+
+ return NULL;
+}
+
+
+
+/* *** recv_update_current_reader ***
+ *
+ * Demonitors the current reader process and pop's the reader queue.
+ * If there is a waiting (reader) process, then it will be assigned
+ * as the new current reader and a new (read) select will be done.
+ */
+
+static
+ERL_NIF_TERM recv_update_current_reader(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+ int sres;
+ ERL_NIF_TERM res = esock_atom_ok;
+
+ if (descP->currentReaderP != NULL) {
+
+ DEMONP("recv_update_current_reader -> current reader",
+ env, descP, &descP->currentReader.mon);
+
+ if (reader_pop(env, descP,
+ &descP->currentReader.pid,
+ &descP->currentReader.mon,
+ &descP->currentReader.ref)) {
+
+ /* There was another one */
+
+ SSDBG( descP,
+ ("SOCKET", "recv_update_current_reader -> new (active) reader: "
+ "\r\n pid: %T"
+ "\r\n ref: %T"
+ "\r\n",
+ descP->currentReader.pid,
+ descP->currentReader.ref) );
+
+ if ((sres = esock_select_read(env, descP->sock, descP,
+ &descP->currentReader.pid,
+ descP->currentReader.ref)) < 0) {
+ res = esock_make_error(env,
+ MKT2(env,
+ esock_atom_select_failed,
+ MKI(env, sres)));
+ }
+ } else {
+ descP->currentReaderP = NULL;
+ }
+ }
+
+ return res;
+}
+
+
+
+/* *** recv_error_current_reader ***
+ *
+ * Process the current reader and any waiting readers
+ * when a read (fatal) error has occured.
+ * All waiting readers will be "aborted", that is a
+ * nif_abort message will be sent (with reaf and reason).
+ */
+static
+void recv_error_current_reader(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM sockRef,
+ ERL_NIF_TERM reason)
+{
+ if (descP->currentReaderP != NULL) {
+ ErlNifPid pid;
+ // ErlNifMonitor mon;
+ ESockMonitor mon;
+ ERL_NIF_TERM ref;
+
+ DEMONP("recv_error_current_reader -> current reader",
+ env, descP, &descP->currentReader.mon);
+
+ while (reader_pop(env, descP, &pid, &mon, &ref)) {
+ SSDBG( descP,
+ ("SOCKET", "recv_error_current_reader -> abort %T\r\n", pid) );
+ esock_send_abort_msg(env, sockRef, ref, reason, &pid);
+ DEMONP("recv_error_current_reader -> pop'ed reader",
+ env, descP, &mon);
+ }
+ }
+}
+
+
+
+/* *** recv_check_result ***
+ *
+ * Process the result of a call to recv.
+ */
+static
+ERL_NIF_TERM recv_check_result(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ int read,
+ int toRead,
+ int saveErrno,
+ ErlNifBinary* bufP,
+ ERL_NIF_TERM sockRef,
+ ERL_NIF_TERM recvRef)
+{
+ char* xres;
+ int sres;
+ ERL_NIF_TERM res, data;
+
+ SSDBG( descP,
+ ("SOCKET", "recv_check_result -> entry with"
+ "\r\n read: %d"
+ "\r\n toRead: %d"
+ "\r\n saveErrno: %d"
+ "\r\n recvRef: %T"
+ "\r\n", read, toRead, saveErrno, recvRef) );
+
+
+ /* <KOLLA>
+ *
+ * We need to handle read = 0 for other type(s) (DGRAM) when
+ * its actually valid to read 0 bytes.
+ *
+ * </KOLLA>
+ */
+
+ if ((read == 0) && (descP->type == SOCK_STREAM)) {
+
+ res = esock_make_error(env, atom_closed);
+
+ /*
+ * When a stream socket peer has performed an orderly shutdown, the return
+ * value will be 0 (the traditional "end-of-file" return).
+ *
+ * *We* do never actually try to read 0 bytes from a stream socket!
+ *
+ * We must also notify any waiting readers!
+ */
+
+ recv_error_current_reader(env, descP, sockRef, res);
+
+ FREE_BIN(bufP);
+
+ return res;
+
+ }
+
+ /* There is a special case: If the provided 'to read' value is
+ * zero (0) (only for type =/= stream).
+ * That means that we reads as much as we can, using the default
+ * read buffer size.
+ */
+
+ if (bufP->size == read) {
+
+ /* +++ We filled the buffer +++ */
+
+ SSDBG( descP,
+ ("SOCKET",
+ "recv_check_result -> [%d] filled the buffer\r\n", toRead) );
+
+ if (toRead == 0) {
+
+ /* +++ Give us everything you have got => *
+ * (maybe) needs to continue +++ */
+
+ /* How do we do this?
+ * Either:
+ * 1) Send up each chunk of data for each of the read
+ * and let the erlang code assemble it: {ok, false, Bin}
+ * (when complete it should return {ok, true, Bin}).
+ * We need to read atleast one more time to be sure if its
+ * done...
+ * 2) Or put it in a buffer here, and then let the erlang code
+ * know that it should call again (special return value)
+ * (continuous binary realloc "here").
+ *
+ * => We choose alt 1 for now.
+ *
+ * Also, we need to check if the rNumCnt has reached its max (rNum),
+ * in which case we will assume the read to be done!
+ */
+
+ cnt_inc(&descP->readByteCnt, read);
+
+ SSDBG( descP,
+ ("SOCKET", "recv_check_result -> shall we continue reading"
+ "\r\n read: %d"
+ "\r\n rNum: %d"
+ "\r\n rNumCnt: %d"
+ "\r\n", read, descP->rNum, descP->rNumCnt) );
+
+ if (descP->rNum > 0) {
+
+ descP->rNumCnt++;
+ if (descP->rNumCnt >= descP->rNum) {
+
+ descP->rNumCnt = 0;
+
+ cnt_inc(&descP->readPkgCnt, 1);
+
+ recv_update_current_reader(env, descP);
+
+ /* This transfers "ownership" of the *allocated* binary to an
+ * erlang term (no need for an explicit free).
+ */
+ data = MKBIN(env, bufP);
+
+ return esock_make_ok3(env, atom_true, data);
+
+ }
+ }
+
+ /* Yes, we *do* need to continue reading */
+
+ if ((xres = recv_init_current_reader(env,
+ descP, recvRef)) != NULL) {
+ descP->rNumCnt = 0;
+ FREE_BIN(bufP);
+ return esock_make_error_str(env, xres);
+ }
+
+ /* This transfers "ownership" of the *allocated* binary to an
+ * erlang term (no need for an explicit free).
+ */
+ data = MKBIN(env, bufP);
+
+ SSDBG( descP,
+ ("SOCKET",
+ "recv_check_result -> [%d] "
+ "we are done for now - read more\r\n", toRead) );
+
+ return esock_make_ok3(env, atom_false, data);
+
+ } else {
+
+ /* +++ We got exactly as much as we requested => We are done +++ */
+
+ cnt_inc(&descP->readPkgCnt, 1);
+ cnt_inc(&descP->readByteCnt, read);
+
+ SSDBG( descP,
+ ("SOCKET",
+ "recv_check_result -> [%d] "
+ "we got exactly what we could fit\r\n", toRead) );
+
+ recv_update_current_reader(env, descP);
+
+ /* This transfers "ownership" of the *allocated* binary to an
+ * erlang term (no need for an explicit free).
+ */
+ data = MKBIN(env, bufP);
+
+ return esock_make_ok3(env, atom_true, data);
+
+ }
+
+ } else if (read < 0) {
+
+ /* +++ Error handling +++ */
+
+ FREE_BIN(bufP);
+
+ if (saveErrno == ECONNRESET) {
+
+ res = esock_make_error(env, atom_closed);
+
+ /* +++ Oups - closed +++ */
+
+ SSDBG( descP, ("SOCKET",
+ "recv_check_result -> [%d] closed\r\n", toRead) );
+
+ /* <KOLLA>
+ *
+ * IF THE CURRENT PROCESS IS *NOT* THE CONTROLLING
+ * PROCESS, WE NEED TO INFORM IT!!!
+ *
+ * ALL WAITING PROCESSES MUST ALSO GET THE ERROR!!
+ * HANDLED BY THE STOP (CALLBACK) FUNCTION?
+ *
+ * SINCE THIS IS A REMOTE CLOSE, WE DON'T NEED TO WAIT
+ * FOR OUTPUT TO BE WRITTEN (NO ONE WILL READ), JUST
+ * ABORT THE SOCKET REGARDLESS OF LINGER???
+ *
+ * </KOLLA>
+ */
+
+ descP->closeLocal = FALSE;
+ descP->state = SOCKET_STATE_CLOSING;
+
+ recv_error_current_reader(env, descP, sockRef, res);
+
+ if ((sres = esock_select_stop(env, descP->sock, descP)) < 0) {
+ esock_warning_msg("Failed stop select (closed) "
+ "for current reader (%T): %d\r\n",
+ recvRef, sres);
+ }
+
+ return res;
+
+ } else if ((saveErrno == ERRNO_BLOCK) ||
+ (saveErrno == EAGAIN)) {
+
+ SSDBG( descP, ("SOCKET",
+ "recv_check_result -> [%d] eagain\r\n", toRead) );
+
+ descP->rNumCnt = 0;
+ if ((xres = recv_init_current_reader(env, descP, recvRef)) != NULL)
+ return esock_make_error_str(env, xres);
+
+ SSDBG( descP, ("SOCKET", "recv_check_result -> SELECT for more\r\n") );
+
+ if ((sres = esock_select_read(env, descP->sock, descP,
+ NULL, recvRef)) < 0) {
+ res = esock_make_error(env,
+ MKT2(env,
+ esock_atom_select_failed,
+ MKI(env, sres)));
+ } else {
+ res = esock_make_error(env, esock_atom_eagain);
+ }
+
+ return res;
+ } else {
+ ERL_NIF_TERM res = esock_make_error_errno(env, saveErrno);
+
+ SSDBG( descP, ("SOCKET", "recv_check_result -> [%d] errno: %d\r\n",
+ toRead, saveErrno) );
+
+ recv_error_current_reader(env, descP, sockRef, res);
+
+ return res;
+ }
+
+ } else {
+
+ /* +++ We did not fill the buffer +++ */
+
+ SSDBG( descP,
+ ("SOCKET",
+ "recv_check_result -> [%d] "
+ "did not fill the buffer (%d of %d)\r\n",
+ toRead, read, bufP->size) );
+
+ if (toRead == 0) {
+
+ /* +++ We got it all, but since we +++
+ * +++ did not fill the buffer, we +++
+ * +++ must split it into a sub-binary. +++
+ */
+
+ SSDBG( descP, ("SOCKET",
+ "recv_check_result -> [%d] split buffer\r\n", toRead) );
+
+ descP->rNumCnt = 0;
+ cnt_inc(&descP->readPkgCnt, 1);
+ cnt_inc(&descP->readByteCnt, read);
+
+ recv_update_current_reader(env, descP);
+
+ /* This transfers "ownership" of the *allocated* binary to an
+ * erlang term (no need for an explicit free).
+ */
+ data = MKBIN(env, bufP);
+ data = MKSBIN(env, data, 0, read);
+
+ SSDBG( descP,
+ ("SOCKET", "recv_check_result -> [%d] done\r\n", toRead) );
+
+ return esock_make_ok3(env, atom_true, data);
+
+ } else {
+
+ /* +++ We got only a part of what was expected +++
+ * +++ => select for more more later and +++
+ * +++ deliver what we got. +++ */
+
+ SSDBG( descP, ("SOCKET", "recv_check_result -> [%d] "
+ "only part of message - expect more\r\n", toRead) );
+
+ if ((xres = recv_init_current_reader(env, descP, recvRef)) != NULL) {
+ FREE_BIN(bufP);
+ return esock_make_error_str(env, xres);
+ }
+
+ data = MKBIN(env, bufP);
+ data = MKSBIN(env, data, 0, read);
+
+ cnt_inc(&descP->readByteCnt, read);
+
+ /* SELECT for more data */
+
+ if ((sres = esock_select_read(env, descP->sock, descP,
+ NULL, recvRef)) < 0) {
+ /* Result: {error, Reason}
+ * Reason: {select_failed, sres, data}
+ */
+ res = esock_make_error(env,
+ MKT3(env,
+ esock_atom_select_failed,
+ MKI(env, sres),
+ data));
+ } else {
+ res = esock_make_ok3(env, atom_false, data);
+ }
+
+ /* This transfers "ownership" of the *allocated* binary to an
+ * erlang term (no need for an explicit free).
+ */
+ return res;
+ }
+ }
+}
+
+
+/* The recvfrom function delivers one (1) message. If our buffer
+ * is to small, the message will be truncated. So, regardless
+ * if we filled the buffer or not, we have got what we are going
+ * to get regarding this message.
+ */
+static
+ERL_NIF_TERM recvfrom_check_result(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ int read,
+ int saveErrno,
+ ErlNifBinary* bufP,
+ SocketAddress* fromAddrP,
+ unsigned int fromAddrLen,
+ ERL_NIF_TERM sockRef,
+ ERL_NIF_TERM recvRef)
+{
+ char* xres;
+ int sres;
+ ERL_NIF_TERM data, res;
+
+ SSDBG( descP,
+ ("SOCKET", "recvfrom_check_result -> entry with"
+ "\r\n read: %d"
+ "\r\n saveErrno: %d"
+ "\r\n recvRef: %T"
+ "\r\n", read, saveErrno, recvRef) );
+
+
+ /* There is a special case: If the provided 'to read' value is
+ * zero (0). That means that we reads as much as we can, using
+ * the default read buffer size.
+ */
+
+ if (read < 0) {
+
+ /* +++ Error handling +++ */
+
+ if (saveErrno == ECONNRESET) {
+ res = esock_make_error(env, atom_closed);
+
+ /* +++ Oups - closed +++ */
+
+ SSDBG( descP, ("SOCKET", "recvfrom_check_result -> closed\r\n") );
+
+ /* <KOLLA>
+ * IF THE CURRENT PROCESS IS *NOT* THE CONTROLLING
+ * PROCESS, WE NEED TO INFORM IT!!!
+ *
+ * ALL WAITING PROCESSES MUST ALSO GET THE ERROR!!
+ *
+ * </KOLLA>
+ */
+
+ descP->closeLocal = FALSE;
+ descP->state = SOCKET_STATE_CLOSING;
+
+ recv_error_current_reader(env, descP, sockRef, res);
+
+ if ((sres = esock_select_stop(env, descP->sock, descP)) < 0) {
+ esock_warning_msg("Failed stop select (closed) "
+ "for current reader (%T): %d\r\n",
+ recvRef, sres);
+ }
+
+ FREE_BIN(bufP);
+
+ return res;
+
+ } else if ((saveErrno == ERRNO_BLOCK) ||
+ (saveErrno == EAGAIN)) {
+
+ SSDBG( descP, ("SOCKET", "recvfrom_check_result -> eagain\r\n") );
+
+ FREE_BIN(bufP);
+
+ if ((xres = recv_init_current_reader(env, descP, recvRef)) != NULL)
+ return esock_make_error_str(env, xres);
+
+ if ((sres = esock_select_read(env, descP->sock, descP,
+ NULL, recvRef)) < 0) {
+ res = esock_make_error(env,
+ MKT2(env,
+ esock_atom_select_failed,
+ MKI(env, sres)));
+ } else {
+ res = esock_make_error(env, esock_atom_eagain);
+ }
+
+ return res;
+ } else {
+
+ res = esock_make_error_errno(env, saveErrno);
+
+ SSDBG( descP,
+ ("SOCKET",
+ "recvfrom_check_result -> errno: %d\r\n", saveErrno) );
+
+ recv_error_current_reader(env, descP, sockRef, res);
+
+ FREE_BIN(bufP);
+
+ return res;
+ }
+
+ } else {
+
+ /* +++ We sucessfully got a message - time to encode the address +++ */
+
+ ERL_NIF_TERM eSockAddr;
+
+ esock_encode_sockaddr(env,
+ fromAddrP, fromAddrLen,
+ &eSockAddr);
+
+ if (read == bufP->size) {
+ data = MKBIN(env, bufP);
+ } else {
+
+ /* +++ We got a chunk of data but +++
+ * +++ since we did not fill the +++
+ * +++ buffer, we must split it +++
+ * +++ into a sub-binary. +++
+ */
+
+ data = MKBIN(env, bufP);
+ data = MKSBIN(env, data, 0, read);
+ }
+
+ recv_update_current_reader(env, descP);
+
+ return esock_make_ok2(env, MKT2(env, eSockAddr, data));
+
+ }
+}
+
+
+
+/* The recvmsg function delivers one (1) message. If our buffer
+ * is to small, the message will be truncated. So, regardless
+ * if we filled the buffer or not, we have got what we are going
+ * to get regarding this message.
+ */
+static
+ERL_NIF_TERM recvmsg_check_result(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ int read,
+ int saveErrno,
+ struct msghdr* msgHdrP,
+ ErlNifBinary* dataBufP,
+ ErlNifBinary* ctrlBufP,
+ ERL_NIF_TERM sockRef,
+ ERL_NIF_TERM recvRef)
+{
+ int sres;
+ ERL_NIF_TERM res;
+
+ SSDBG( descP,
+ ("SOCKET", "recvmsg_check_result -> entry with"
+ "\r\n read: %d"
+ "\r\n saveErrno: %d"
+ "\r\n recvRef: %T"
+ "\r\n", read, saveErrno, recvRef) );
+
+
+ /* <KOLLA>
+ *
+ * We need to handle read = 0 for other type(s) (DGRAM) when
+ * its actually valid to read 0 bytes.
+ *
+ * </KOLLA>
+ */
+
+ if ((read == 0) && (descP->type == SOCK_STREAM)) {
+
+ /*
+ * When a stream socket peer has performed an orderly shutdown, the return
+ * value will be 0 (the traditional "end-of-file" return).
+ *
+ * *We* do never actually try to read 0 bytes from a stream socket!
+ */
+
+
+ FREE_BIN(dataBufP); FREE_BIN(ctrlBufP);
+
+ return esock_make_error(env, atom_closed);
+
+ }
+
+
+ /* There is a special case: If the provided 'to read' value is
+ * zero (0). That means that we reads as much as we can, using
+ * the default read buffer size.
+ */
+
+ if (read < 0) {
+
+ /* +++ Error handling +++ */
+
+ if (saveErrno == ECONNRESET) {
+
+ /* +++ Oups - closed +++ */
+
+ SSDBG( descP, ("SOCKET", "recvmsg_check_result -> closed\r\n") );
+
+ /* <KOLLA>
+ * IF THE CURRENT PROCESS IS *NOT* THE CONTROLLING
+ * PROCESS, WE NEED TO INFORM IT!!!
+ *
+ * ALL WAITING PROCESSES MUST ALSO GET THE ERROR!!
+ *
+ * </KOLLA>
+ */
+
+ res = esock_make_error(env, atom_closed);
+ descP->closeLocal = FALSE;
+ descP->state = SOCKET_STATE_CLOSING;
+
+ recv_error_current_reader(env, descP, sockRef, res);
+
+ if ((sres = esock_select_stop(env, descP->sock, descP)) < 0) {
+ esock_warning_msg("Failed stop select (closed) "
+ "for current reader (%T): %d\r\n",
+ recvRef, sres);
+ }
+
+ FREE_BIN(dataBufP); FREE_BIN(ctrlBufP);
+
+ return res;;
+
+ } else if ((saveErrno == ERRNO_BLOCK) ||
+ (saveErrno == EAGAIN)) {
+ char* xres;
+
+ SSDBG( descP, ("SOCKET", "recvmsg_check_result -> eagain\r\n") );
+
+ FREE_BIN(dataBufP); FREE_BIN(ctrlBufP);
+
+ if ((xres = recv_init_current_reader(env, descP, recvRef)) != NULL)
+ return esock_make_error_str(env, xres);
+
+ if ((sres = esock_select_read(env, descP->sock, descP,
+ NULL, recvRef)) < 0) {
+ res = esock_make_error(env,
+ MKT2(env,
+ esock_atom_select_failed,
+ MKI(env, sres)));
+ } else {
+ res = esock_make_error(env, esock_atom_eagain);
+ }
+
+ return res;
+
+ } else {
+
+ res = esock_make_error_errno(env, saveErrno);
+
+ SSDBG( descP,
+ ("SOCKET",
+ "recvmsg_check_result -> errno: %d\r\n", saveErrno) );
+
+ recv_error_current_reader(env, descP, sockRef, res);
+
+ FREE_BIN(dataBufP); FREE_BIN(ctrlBufP);
+
+ return res;
+ }
+
+ } else {
+
+ /* +++ We sucessfully got a message - time to encode it +++ */
+
+ ERL_NIF_TERM eMsgHdr;
+ char* xres;
+
+ /*
+ * <KOLLA>
+ *
+ * The return value of recvmsg is the *total* number of bytes
+ * that where successfully read. This data has been put into
+ * the *IO vector*.
+ *
+ * </KOLLA>
+ */
+
+ if ((xres = encode_msghdr(env, descP,
+ read, msgHdrP, dataBufP, ctrlBufP,
+ &eMsgHdr)) != NULL) {
+
+ SSDBG( descP,
+ ("SOCKET",
+ "recvmsg_check_result -> "
+ "(msghdr) encode failed: %s\r\n", xres) );
+
+ recv_update_current_reader(env, descP);
+
+ FREE_BIN(dataBufP); FREE_BIN(ctrlBufP);
+
+ return esock_make_error_str(env, xres);
+ } else {
+
+ SSDBG( descP,
+ ("SOCKET",
+ "recvmsg_check_result -> "
+ "(msghdr) encode ok: %T\r\n", eMsgHdr) );
+
+ recv_update_current_reader(env, descP);
+
+ return esock_make_ok2(env, eMsgHdr);
+ }
+
+ }
+}
+
+
+
+
+/* +++ encode_msghdr +++
+ *
+ * Encode a msghdr (recvmsg). In erlang its represented as
+ * a map, which has a specific set of attributes:
+ *
+ * addr (source address) - sockaddr()
+ * iov - [binary()]
+ * ctrl - [cmsghdr()]
+ * flags - msghdr_flags()
+ */
+
+extern
+char* encode_msghdr(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ int read,
+ struct msghdr* msgHdrP,
+ ErlNifBinary* dataBufP,
+ ErlNifBinary* ctrlBufP,
+ ERL_NIF_TERM* eSockAddr)
+{
+ char* xres;
+ ERL_NIF_TERM addr, iov, ctrl, flags;
+
+ SSDBG( descP,
+ ("SOCKET", "encode_msghdr -> entry with"
+ "\r\n read: %d"
+ "\r\n", read) );
+
+ /* The address is not used if we are connected,
+ * so check (length = 0) before we try to encodel
+ */
+ if (msgHdrP->msg_namelen != 0) {
+ if ((xres = esock_encode_sockaddr(env,
+ (SocketAddress*) msgHdrP->msg_name,
+ msgHdrP->msg_namelen,
+ &addr)) != NULL)
+ return xres;
+ } else {
+ addr = esock_atom_undefined;
+ }
+
+ SSDBG( descP, ("SOCKET", "encode_msghdr -> try encode iov\r\n") );
+ if ((xres = esock_encode_iov(env,
+ read,
+ msgHdrP->msg_iov,
+ msgHdrP->msg_iovlen,
+ dataBufP,
+ &iov)) != NULL)
+ return xres;
+
+ SSDBG( descP, ("SOCKET", "encode_msghdr -> try encode cmsghdrs\r\n") );
+ if ((xres = encode_cmsghdrs(env, descP, ctrlBufP, msgHdrP, &ctrl)) != NULL)
+ return xres;
+
+ SSDBG( descP, ("SOCKET", "encode_msghdr -> try encode flags\r\n") );
+ if ((xres = encode_msghdr_flags(env, descP, msgHdrP->msg_flags, &flags)) != NULL)
+ return xres;
+
+ SSDBG( descP,
+ ("SOCKET", "encode_msghdr -> components encoded:"
+ "\r\n addr: %T"
+ "\r\n iov: %T"
+ "\r\n ctrl: %T"
+ "\r\n flags: %T"
+ "\r\n", addr, iov, ctrl, flags) );
+ {
+ ERL_NIF_TERM keys[] = {esock_atom_addr,
+ esock_atom_iov,
+ esock_atom_ctrl,
+ esock_atom_flags};
+ ERL_NIF_TERM vals[] = {addr, iov, ctrl, flags};
+ unsigned int numKeys = sizeof(keys) / sizeof(ERL_NIF_TERM);
+ unsigned int numVals = sizeof(vals) / sizeof(ERL_NIF_TERM);
+ ERL_NIF_TERM tmp;
+
+ ESOCK_ASSERT( (numKeys == numVals) );
+
+ SSDBG( descP, ("SOCKET", "encode_msghdr -> create msghdr map\r\n") );
+ if (!MKMA(env, keys, vals, numKeys, &tmp))
+ return ESOCK_STR_EINVAL;
+
+ SSDBG( descP, ("SOCKET", "encode_msghdr -> msghdr: "
+ "\r\n %T"
+ "\r\n", tmp) );
+
+ *eSockAddr = tmp;
+ }
+
+ SSDBG( descP, ("SOCKET", "encode_msghdr -> done\r\n") );
+
+ return NULL;
+}
+
+
+
+
+/* +++ encode_cmsghdrs +++
+ *
+ * Encode a list of cmsghdr(). There can be 0 or more cmsghdr "blocks".
+ *
+ * Our "problem" is that we have no idea how many control messages
+ * we have.
+ *
+ * The cmsgHdrP arguments points to the start of the control data buffer,
+ * an actual binary. Its the only way to create sub-binaries. So, what we
+ * need to continue processing this is to turn that into an binary erlang
+ * term (which can then in turn be turned into sub-binaries).
+ *
+ * We need the cmsgBufP (even though cmsgHdrP points to it) to be able
+ * to create sub-binaries (one for each cmsg hdr).
+ *
+ * The TArray (term array) is created with the size of 128, which should
+ * be enough. But if its not, then it will be automatically realloc'ed during
+ * add. Once we are done adding hdr's to it, we convert the tarray to a list.
+ */
+
+extern
+char* encode_cmsghdrs(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ErlNifBinary* cmsgBinP,
+ struct msghdr* msgHdrP,
+ ERL_NIF_TERM* eCMsgHdr)
+{
+ ERL_NIF_TERM ctrlBuf = MKBIN(env, cmsgBinP); // The *entire* binary
+ SocketTArray cmsghdrs = TARRAY_CREATE(128);
+ struct cmsghdr* firstP = CMSG_FIRSTHDR(msgHdrP);
+ struct cmsghdr* currentP;
+
+ SSDBG( descP, ("SOCKET", "encode_cmsghdrs -> entry\r\n") );
+
+ for (currentP = firstP;
+ currentP != NULL;
+ currentP = CMSG_NXTHDR(msgHdrP, currentP)) {
+
+ SSDBG( descP,
+ ("SOCKET", "encode_cmsghdrs -> process cmsg header when"
+ "\r\n TArray Size: %d"
+ "\r\n", TARRAY_SZ(cmsghdrs)) );
+
+ /* MUST check this since on Linux the returned "cmsg" may actually
+ * go too far!
+ */
+ if (((CHARP(currentP) + currentP->cmsg_len) - CHARP(firstP)) >
+ msgHdrP->msg_controllen) {
+ /* Ouch, fatal error - give up
+ * We assume we cannot trust any data if this is wrong.
+ */
+ TARRAY_DELETE(cmsghdrs);
+ return ESOCK_STR_EINVAL;
+ } else {
+ ERL_NIF_TERM level, type, data;
+ unsigned char* dataP = (unsigned char*) CMSG_DATA(currentP);
+ size_t dataPos = dataP - cmsgBinP->data;
+ size_t dataLen = currentP->cmsg_len - (CHARP(currentP)-CHARP(dataP));
+
+ SSDBG( descP,
+ ("SOCKET", "encode_cmsghdrs -> cmsg header data: "
+ "\r\n dataPos: %d"
+ "\r\n dataLen: %d"
+ "\r\n", dataPos, dataLen) );
+
+ /* We can't give up just because its an unknown protocol,
+ * so if its a protocol we don't know, we return its integer
+ * value and leave it to the user.
+ */
+ if (encode_cmsghdr_level(env, currentP->cmsg_level, &level) != NULL)
+ level = MKI(env, currentP->cmsg_level);
+
+ if (encode_cmsghdr_type(env,
+ currentP->cmsg_level, currentP->cmsg_type,
+ &type) != NULL)
+ type = MKI(env, currentP->cmsg_type);
+
+ if (encode_cmsghdr_data(env, ctrlBuf,
+ currentP->cmsg_level,
+ currentP->cmsg_type,
+ dataP, dataPos, dataLen,
+ &data) != NULL)
+ data = MKSBIN(env, ctrlBuf, dataPos, dataLen);
+
+ SSDBG( descP,
+ ("SOCKET", "encode_cmsghdrs -> "
+ "\r\n level: %T"
+ "\r\n type: %T"
+ "\r\n data: %T"
+ "\r\n", level, type, data) );
+
+ /* And finally create the 'cmsghdr' map -
+ * and if successfull add it to the tarray.
+ */
+ {
+ ERL_NIF_TERM keys[] = {esock_atom_level,
+ esock_atom_type,
+ esock_atom_data};
+ ERL_NIF_TERM vals[] = {level, type, data};
+ unsigned int numKeys = sizeof(keys) / sizeof(ERL_NIF_TERM);
+ unsigned int numVals = sizeof(vals) / sizeof(ERL_NIF_TERM);
+ ERL_NIF_TERM cmsgHdr;
+
+ /* Guard agains cut-and-paste errors */
+ ESOCK_ASSERT( (numKeys == numVals) );
+
+ if (!MKMA(env, keys, vals, numKeys, &cmsgHdr)) {
+ TARRAY_DELETE(cmsghdrs);
+ return ESOCK_STR_EINVAL;
+ }
+
+ /* And finally add it to the list... */
+ TARRAY_ADD(cmsghdrs, cmsgHdr);
+ }
+ }
+ }
+
+ SSDBG( descP,
+ ("SOCKET", "encode_cmsghdrs -> cmsg headers processed when"
+ "\r\n TArray Size: %d"
+ "\r\n", TARRAY_SZ(cmsghdrs)) );
+
+ /* The tarray is populated - convert it to a list */
+ TARRAY_TOLIST(cmsghdrs, env, eCMsgHdr);
+
+ return NULL;
+}
+
+
+
+/* +++ decode_cmsghdrs +++
+ *
+ * Decode a list of cmsghdr(). There can be 0 or more cmsghdr "blocks".
+ *
+ * Each element can either be a (erlang) map that needs to be decoded,
+ * or a (erlang) binary that just needs to be appended to the control
+ * buffer.
+ *
+ * Our "problem" is that we have no idea much memory we actually need.
+ *
+ */
+
+extern
+char* decode_cmsghdrs(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eCMsgHdr,
+ char* cmsgHdrBufP,
+ size_t cmsgHdrBufLen,
+ size_t* cmsgHdrBufUsed)
+{
+ ERL_NIF_TERM elem, tail, list;
+ char* bufP;
+ size_t rem, used, totUsed = 0;
+ unsigned int len;
+ int i;
+ char* xres;
+
+ SSDBG( descP, ("SOCKET", "decode_cmsghdrs -> entry with"
+ "\r\n cmsgHdrBufP: 0x%lX"
+ "\r\n cmsgHdrBufLen: %d"
+ "\r\n", cmsgHdrBufP, cmsgHdrBufLen) );
+
+ if (IS_LIST(env, eCMsgHdr) && GET_LIST_LEN(env, eCMsgHdr, &len)) {
+
+ SSDBG( descP, ("SOCKET", "decode_cmsghdrs -> list length: %d\r\n", len) );
+
+ for (i = 0, list = eCMsgHdr, rem = cmsgHdrBufLen, bufP = cmsgHdrBufP;
+ i < len; i++) {
+
+ SSDBG( descP, ("SOCKET", "decode_cmsghdrs -> process elem %d:"
+ "\r\n (buffer) rem: %u"
+ "\r\n (buffer) totUsed: %u"
+ "\r\n", i, rem, totUsed) );
+
+ /* Extract the (current) head of the (cmsg hdr) list */
+ if (!GET_LIST_ELEM(env, list, &elem, &tail))
+ return ESOCK_STR_EINVAL;
+
+ used = 0; // Just in case...
+ if ((xres = decode_cmsghdr(env, descP, elem, bufP, rem, &used)) != NULL)
+ return xres;
+
+ bufP = CHARP( ULONG(bufP) + used );
+ rem = SZT( rem - used );
+ list = tail;
+ totUsed += used;
+
+ }
+
+ SSDBG( descP, ("SOCKET",
+ "decode_cmsghdrs -> all %d ctrl headers processed\r\n",
+ len) );
+
+ xres = NULL;
+ } else {
+ xres = ESOCK_STR_EINVAL;
+ }
+
+ *cmsgHdrBufUsed = totUsed;
+
+ SSDBG( descP, ("SOCKET", "decode_cmsghdrs -> done with %s when"
+ "\r\n totUsed = %u\r\n",
+ ((xres != NULL) ? xres : "NULL"), totUsed) );
+
+ return xres;
+}
+
+
+/* +++ decode_cmsghdr +++
+ *
+ * Decode one cmsghdr(). Put the "result" into the buffer and advance the
+ * pointer (of the buffer) afterwards. Also update 'rem' accordingly.
+ * But before the actual decode, make sure that there is enough room in
+ * the buffer for the cmsg header (sizeof(*hdr) < rem).
+ *
+ * The eCMsgHdr should be a map with three fields:
+ *
+ * level :: cmsghdr_level() (socket | protocol() | integer())
+ * type :: cmsghdr_type() (atom() | integer())
+ * What values are valid depend on the level
+ * data :: cmsghdr_data() (term() | binary())
+ * The type of the data depends on
+ * level and type, but can be a binary,
+ * which means that the data is already coded.
+ */
+extern
+char* decode_cmsghdr(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ERL_NIF_TERM eCMsgHdr,
+ char* bufP,
+ size_t rem,
+ size_t* used)
+{
+ SSDBG( descP, ("SOCKET", "decode_cmsghdr -> entry with"
+ "\r\n eCMsgHdr: %T"
+ "\r\n", eCMsgHdr) );
+
+ if (IS_MAP(env, eCMsgHdr)) {
+ ERL_NIF_TERM eLevel, eType, eData;
+ int level, type;
+ char* xres;
+
+ /* First extract all three attributes (as terms) */
+
+ if (!GET_MAP_VAL(env, eCMsgHdr, esock_atom_level, &eLevel))
+ return ESOCK_STR_EINVAL;
+
+ SSDBG( descP, ("SOCKET", "decode_cmsghdr -> eLevel: %T"
+ "\r\n", eLevel) );
+
+ if (!GET_MAP_VAL(env, eCMsgHdr, esock_atom_type, &eType))
+ return ESOCK_STR_EINVAL;
+
+ SSDBG( descP, ("SOCKET", "decode_cmsghdr -> eType: %T"
+ "\r\n", eType) );
+
+ if (!GET_MAP_VAL(env, eCMsgHdr, esock_atom_data, &eData))
+ return ESOCK_STR_EINVAL;
+
+ SSDBG( descP, ("SOCKET", "decode_cmsghdr -> eData: %T"
+ "\r\n", eData) );
+
+ /* Second, decode level */
+ if ((xres = decode_cmsghdr_level(env, eLevel, &level)) != NULL)
+ return xres;
+
+ SSDBG( descP, ("SOCKET", "decode_cmsghdr -> level: %d\r\n", level) );
+
+ /* third, decode type */
+ if ((xres = decode_cmsghdr_type(env, level, eType, &type)) != NULL)
+ return xres;
+
+ SSDBG( descP, ("SOCKET", "decode_cmsghdr -> type: %d\r\n", type) );
+
+ /* And finally data
+ * If its a binary, we are done. Otherwise, we need to check
+ * level and type to know what kind of data to expect.
+ */
+
+ return decode_cmsghdr_data(env, descP, bufP, rem, level, type, eData, used);
+
+ } else {
+ *used = 0;
+ return ESOCK_STR_EINVAL;
+ }
+
+ return NULL;
+}
+
+
+/* *** decode_cmsghdr_data ***
+ *
+ * For all combinations of level and type we accept a binary as data,
+ * so we begin by testing for that. If its not a binary, then we check
+ * level (ip) and type (tos or ttl), in which case the data *must* be
+ * an integer and ip_tos() respectively.
+ */
+static
+char* decode_cmsghdr_data(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ char* bufP,
+ size_t rem,
+ int level,
+ int type,
+ ERL_NIF_TERM eData,
+ size_t* used)
+{
+ char* xres;
+
+ SSDBG( descP, ("SOCKET", "decode_cmsghdr_data -> entry with"
+ "\r\n eData: %T"
+ "\r\n", eData) );
+
+ if (IS_BIN(env, eData)) {
+ ErlNifBinary bin;
+
+ if (GET_BIN(env, eData, &bin)) {
+ SSDBG( descP, ("SOCKET", "decode_cmsghdr_data -> "
+ "do final decode with binary\r\n") );
+ return decode_cmsghdr_final(descP, bufP, rem, level, type,
+ (char*) bin.data, bin.size,
+ used);
+ } else {
+ *used = 0;
+ xres = ESOCK_STR_EINVAL;
+ }
+ } else {
+
+ /* Its *not* a binary so we need to look at what level and type
+ * we have and treat them individually.
+ */
+
+ switch (level) {
+#if defined(SOL_IP)
+ case SOL_IP:
+#else
+ case IPPROTO_IP:
+#endif
+ switch (type) {
+#if defined(IP_TOS)
+ case IP_TOS:
+ {
+ int data;
+ if (decode_ip_tos(env, eData, &data)) {
+ SSDBG( descP, ("SOCKET", "decode_cmsghdr_data -> "
+ "do final decode with tos\r\n") );
+ return decode_cmsghdr_final(descP, bufP, rem, level, type,
+ (char*) &data,
+ sizeof(data),
+ used);
+ } else {
+ *used = 0;
+ xres = ESOCK_STR_EINVAL;
+ }
+ }
+ break;
+#endif
+
+#if defined(IP_TTL)
+ case IP_TTL:
+ {
+ int data;
+ if (GET_INT(env, eData, &data)) {
+ SSDBG( descP, ("SOCKET", "decode_cmsghdr_data -> "
+ "do final decode with ttl\r\n") );
+ return decode_cmsghdr_final(descP, bufP, rem, level, type,
+ (char*) &data,
+ sizeof(data),
+ used);
+ } else {
+ *used = 0;
+ xres = ESOCK_STR_EINVAL;
+ }
+ }
+ break;
+#endif
+
+ }
+ break;
+
+ default:
+ *used = 0;
+ xres = ESOCK_STR_EINVAL;
+ break;
+ }
+
+ }
+
+ return xres;
+}
+
+
+/* *** decode_cmsghdr_final ***
+ *
+ * This does the final create of the cmsghdr (including the data copy).
+ */
+static
+char* decode_cmsghdr_final(SocketDescriptor* descP,
+ char* bufP,
+ size_t rem,
+ int level,
+ int type,
+ char* data,
+ int sz,
+ size_t* used)
+{
+ int len = CMSG_LEN(sz);
+ int space = CMSG_SPACE(sz);
+
+ SSDBG( descP, ("SOCKET", "decode_cmsghdr_data -> entry when"
+ "\r\n level: %d"
+ "\r\n type: %d"
+ "\r\n sz: %d => %d, %d"
+ "\r\n", level, type, sz, len, space) );
+
+ if (rem >= space) {
+ struct cmsghdr* cmsgP = (struct cmsghdr*) bufP;
+
+ /* The header */
+ cmsgP->cmsg_len = len;
+ cmsgP->cmsg_level = level;
+ cmsgP->cmsg_type = type;
+
+ sys_memcpy(CMSG_DATA(cmsgP), data, sz);
+ *used = space;
+ } else {
+ *used = 0;
+ return ESOCK_STR_EINVAL;
+ }
+
+ SSDBG( descP, ("SOCKET", "decode_cmsghdr_final -> done\r\n") );
+
+ return NULL;
+}
+
+
+/* +++ encode_cmsghdr_level +++
+ *
+ * Encode the level part of the cmsghdr().
+ *
+ */
+
+static
+char* encode_cmsghdr_level(ErlNifEnv* env,
+ int level,
+ ERL_NIF_TERM* eLevel)
+{
+ char* xres;
+
+ switch (level) {
+ case SOL_SOCKET:
+ *eLevel = esock_atom_socket;
+ xres = NULL;
+ break;
+
+#if defined(SOL_IP)
+ case SOL_IP:
+#else
+ case IPPROTO_IP:
+#endif
+ *eLevel = esock_atom_ip;
+ xres = NULL;
+ break;
+
+#if defined(HAVE_IPV6)
+#if defined(SOL_IPV6)
+ case SOL_IPV6:
+#else
+ case IPPROTO_IPV6:
+#endif
+ *eLevel = esock_atom_ip;
+ xres = NULL;
+ break;
+#endif
+
+ case IPPROTO_UDP:
+ *eLevel = esock_atom_udp;
+ xres = NULL;
+ break;
+
+ default:
+ *eLevel = MKI(env, level);
+ xres = NULL;
+ break;
+ }
+
+ return xres;
+}
+
+
+
+/* +++ decode_cmsghdr_level +++
+ *
+ * Decode the level part of the cmsghdr().
+ *
+ */
+
+static
+char* decode_cmsghdr_level(ErlNifEnv* env,
+ ERL_NIF_TERM eLevel,
+ int* level)
+{
+ char* xres = NULL;
+
+ if (IS_ATOM(env, eLevel)) {
+
+ if (COMPARE(eLevel, esock_atom_socket) == 0) {
+ *level = SOL_SOCKET;
+ xres = NULL;
+ } else if (COMPARE(eLevel, esock_atom_ip) == 0) {
+#if defined(SOL_IP)
+ *level = SOL_IP;
+#else
+ *level = IPPROTO_IP;
+#endif
+ xres = NULL;
+#if defined(HAVE_IPV6)
+ } else if (COMPARE(eLevel, esock_atom_ipv6) == 0) {
+#if defined(SOL_IPV6)
+ *level = SOL_IPV6;
+#else
+ *level = IPPROTO_IPV6;
+#endif
+ xres = NULL;
+#endif
+ } else if (COMPARE(eLevel, esock_atom_udp) == 0) {
+ *level = IPPROTO_UDP;
+ xres = NULL;
+ } else {
+ *level = -1;
+ xres = ESOCK_STR_EINVAL;
+ }
+ } else if (IS_NUM(env, eLevel)) {
+ if (!GET_INT(env, eLevel, level))
+ xres = ESOCK_STR_EINVAL;
+ } else {
+ *level = -1;
+ xres = ESOCK_STR_EINVAL;
+ }
+
+ return xres;
+}
+
+
+
+/* +++ encode_cmsghdr_type +++
+ *
+ * Encode the type part of the cmsghdr().
+ *
+ */
+
+static
+char* encode_cmsghdr_type(ErlNifEnv* env,
+ int level,
+ int type,
+ ERL_NIF_TERM* eType)
+{
+ char* xres = NULL;
+
+ switch (level) {
+ case SOL_SOCKET:
+ switch (type) {
+#if defined(SO_TIMESTAMP)
+ case SO_TIMESTAMP:
+ *eType = esock_atom_timestamp;
+ break;
+#endif
+
+#if defined(SCM_RIGHTS)
+ case SCM_RIGHTS:
+ *eType = esock_atom_rights;
+ break;
+#endif
+
+#if defined(SCM_CREDENTIALS)
+ case SCM_CREDENTIALS:
+ *eType = esock_atom_credentials;
+ break;
+#endif
+
+ default:
+ xres = ESOCK_STR_EINVAL;
+ break;
+ }
+ break;
+
+#if defined(SOL_IP)
+ case SOL_IP:
+#else
+ case IPPROTO_IP:
+#endif
+ switch (type) {
+#if defined(IP_TOS)
+ case IP_TOS:
+ *eType = esock_atom_tos;
+ break;
+#endif
+
+#if defined(IP_TTL)
+ case IP_TTL:
+ *eType = esock_atom_ttl;
+ break;
+#endif
+
+#if defined(IP_PKTINFO)
+ case IP_PKTINFO:
+ *eType = esock_atom_pktinfo;
+ break;
+#endif
+
+#if defined(IP_ORIGDSTADDR)
+ case IP_ORIGDSTADDR:
+ *eType = esock_atom_origdstaddr;
+ break;
+#endif
+
+ default:
+ xres = ESOCK_STR_EINVAL;
+ break;
+ }
+ break;
+
+#if defined(HAVE_IPV6)
+#if defined(SOL_IPV6)
+ case SOL_IPV6:
+#else
+ case IPPROTO_IPV6:
+#endif
+ switch (type) {
+#if defined(IPV6_PKTINFO)
+ case IPV6_PKTINFO:
+ *eType = esock_atom_pktinfo;
+ break;
+#endif
+
+ default:
+ xres = ESOCK_STR_EINVAL;
+ break;
+ }
+ break;
+#endif
+
+ case IPPROTO_TCP:
+ switch (type) {
+ default:
+ xres = ESOCK_STR_EINVAL;
+ break;
+ }
+ break;
+
+ case IPPROTO_UDP:
+ switch (type) {
+ default:
+ xres = ESOCK_STR_EINVAL;
+ break;
+ }
+ break;
+
+#if defined(HAVE_SCTP)
+ case IPPROTO_SCTP:
+ switch (type) {
+ default:
+ xres = ESOCK_STR_EINVAL;
+ break;
+ }
+ break;
+#endif
+
+ default:
+ xres = ESOCK_STR_EINVAL;
+ break;
+ }
+
+ return xres;
+}
+
+
+
+/* +++ decode_cmsghdr_type +++
+ *
+ * Decode the type part of the cmsghdr().
+ *
+ */
+
+static
+char* decode_cmsghdr_type(ErlNifEnv* env,
+ int level,
+ ERL_NIF_TERM eType,
+ int* type)
+{
+ char* xres = NULL;
+
+ switch (level) {
+ case SOL_SOCKET:
+ if (IS_NUM(env, eType)) {
+ if (!GET_INT(env, eType, type)) {
+ *type = -1;
+ xres = ESOCK_STR_EINVAL;
+ }
+ } else {
+ *type = -1;
+ xres = ESOCK_STR_EINVAL;
+ }
+ break;
+
+
+#if defined(SOL_IP)
+ case SOL_IP:
+#else
+ case IPPROTO_IP:
+#endif
+ if (IS_ATOM(env, eType)) {
+ if (COMPARE(eType, esock_atom_tos) == 0) {
+#if defined(IP_TOS)
+ *type = IP_TOS;
+#else
+ xres = ESOCK_STR_EINVAL;
+#endif
+ } else if (COMPARE(eType, esock_atom_ttl) == 0) {
+#if defined(IP_TTL)
+ *type = IP_TTL;
+#else
+ xres = ESOCK_STR_EINVAL;
+#endif
+ } else {
+ xres = ESOCK_STR_EINVAL;
+ }
+ } else if (IS_NUM(env, eType)) {
+ if (!GET_INT(env, eType, type)) {
+ *type = -1;
+ xres = ESOCK_STR_EINVAL;
+ }
+ } else {
+ *type = -1;
+ xres = ESOCK_STR_EINVAL;
+ }
+ break;
+
+#if defined(HAVE_IPV6)
+#if defined(SOL_IPV6)
+ case SOL_IPV6:
+#else
+ case IPPROTO_IPV6:
+#endif
+ if (IS_NUM(env, eType)) {
+ if (!GET_INT(env, eType, type)) {
+ *type = -1;
+ xres = ESOCK_STR_EINVAL;
+ }
+ } else {
+ *type = -1;
+ xres = ESOCK_STR_EINVAL;
+ }
+ break;
+#endif
+
+ case IPPROTO_UDP:
+ if (IS_NUM(env, eType)) {
+ if (!GET_INT(env, eType, type)) {
+ *type = -1;
+ xres = ESOCK_STR_EINVAL;
+ }
+ } else {
+ *type = -1;
+ xres = ESOCK_STR_EINVAL;
+ }
+ break;
+
+ default:
+ *type = -1;
+ xres = ESOCK_STR_EINVAL;
+ break;
+ }
+
+ return xres;
+}
+
+
+
+/* +++ encode_cmsghdr_data +++
+ *
+ * Encode the data part of the cmsghdr().
+ *
+ */
+
+static
+char* encode_cmsghdr_data(ErlNifEnv* env,
+ ERL_NIF_TERM ctrlBuf,
+ int level,
+ int type,
+ unsigned char* dataP,
+ size_t dataPos,
+ size_t dataLen,
+ ERL_NIF_TERM* eCMsgHdrData)
+{
+ char* xres;
+
+ switch (level) {
+#if defined(SOL_SOCKET)
+ case SOL_SOCKET:
+ xres = encode_cmsghdr_data_socket(env, ctrlBuf, type,
+ dataP, dataPos, dataLen,
+ eCMsgHdrData);
+ break;
+#endif
+
+#if defined(SOL_IP)
+ case SOL_IP:
+#else
+ case IPPROTO_IP:
+#endif
+ xres = encode_cmsghdr_data_ip(env, ctrlBuf, type,
+ dataP, dataPos, dataLen,
+ eCMsgHdrData);
+ break;
+
+#if defined(HAVE_IPV6)
+#if defined(SOL_IPV6)
+ case SOL_IPV6:
+#else
+ case IPPROTO_IPV6:
+#endif
+ xres = encode_cmsghdr_data_ipv6(env, ctrlBuf, type,
+ dataP, dataPos, dataLen,
+ eCMsgHdrData);
+ break;
+#endif
+
+ /*
+ case IPPROTO_TCP:
+ xres = encode_cmsghdr_data_tcp(env, type, dataP, eCMsgHdrData);
+ break;
+ */
+
+ /*
+ case IPPROTO_UDP:
+ xres = encode_cmsghdr_data_udp(env, type, dataP, eCMsgHdrData);
+ break;
+ */
+
+ /*
+ #if defined(HAVE_SCTP)
+ case IPPROTO_SCTP:
+ xres = encode_cmsghdr_data_sctp(env, type, dataP, eCMsgHdrData);
+ break;
+ #endif
+ */
+
+ default:
+ *eCMsgHdrData = MKSBIN(env, ctrlBuf, dataPos, dataLen);
+ xres = NULL;
+ break;
+ }
+
+ return xres;
+}
+
+
+
+/* +++ encode_cmsghdr_data_socket +++
+ *
+ * Encode the data part when "protocol" = socket of the cmsghdr().
+ *
+ */
+
+static
+char* encode_cmsghdr_data_socket(ErlNifEnv* env,
+ ERL_NIF_TERM ctrlBuf,
+ int type,
+ unsigned char* dataP,
+ size_t dataPos,
+ size_t dataLen,
+ ERL_NIF_TERM* eCMsgHdrData)
+{
+ // char* xres;
+
+ switch (type) {
+#if defined(SO_TIMESTAMP)
+ case SO_TIMESTAMP:
+ {
+ struct timeval* timeP = (struct timeval*) dataP;
+
+ if (esock_encode_timeval(env, timeP, eCMsgHdrData) != NULL)
+ *eCMsgHdrData = MKSBIN(env, ctrlBuf, dataPos, dataLen);
+ }
+ break;
+#endif
+
+ default:
+ *eCMsgHdrData = MKSBIN(env, ctrlBuf, dataPos, dataLen);
+ break;
+ }
+
+ return NULL;
+}
+
+
+
+/* +++ encode_cmsghdr_data_ip +++
+ *
+ * Encode the data part when protocol = IP of the cmsghdr().
+ *
+ */
+
+static
+char* encode_cmsghdr_data_ip(ErlNifEnv* env,
+ ERL_NIF_TERM ctrlBuf,
+ int type,
+ unsigned char* dataP,
+ size_t dataPos,
+ size_t dataLen,
+ ERL_NIF_TERM* eCMsgHdrData)
+{
+ char* xres = NULL;
+
+ switch (type) {
+#if defined(IP_TOS)
+ case IP_TOS:
+ {
+ unsigned char tos = *dataP;
+ switch (IPTOS_TOS(tos)) {
+ case IPTOS_LOWDELAY:
+ *eCMsgHdrData = esock_atom_lowdelay;
+ break;
+ case IPTOS_THROUGHPUT:
+ *eCMsgHdrData = esock_atom_throughput;
+ break;
+ case IPTOS_RELIABILITY:
+ *eCMsgHdrData = esock_atom_reliability;
+ break;
+#if defined(IPTOS_MINCOST)
+ case IPTOS_MINCOST:
+ *eCMsgHdrData = esock_atom_mincost;
+ break;
+#endif
+ default:
+ *eCMsgHdrData = MKUI(env, tos);
+ break;
+ }
+ }
+ break;
+#endif
+
+#if defined(IP_TTL)
+ case IP_TTL:
+ {
+ int ttl = *((int*) dataP);
+ *eCMsgHdrData = MKI(env, ttl);
+ }
+ break;
+#endif
+
+#if defined(IP_PKTINFO)
+ case IP_PKTINFO:
+ {
+ struct in_pktinfo* pktInfoP = (struct in_pktinfo*) dataP;
+ ERL_NIF_TERM ifIndex = MKUI(env, pktInfoP->ipi_ifindex);
+ ERL_NIF_TERM specDst, addr;
+
+ if ((xres = esock_encode_ip4_address(env,
+ &pktInfoP->ipi_spec_dst,
+ &specDst)) != NULL) {
+ *eCMsgHdrData = esock_atom_undefined;
+ return xres;
+ }
+
+ if ((xres = esock_encode_ip4_address(env,
+ &pktInfoP->ipi_addr,
+ &addr)) != NULL) {
+ *eCMsgHdrData = esock_atom_undefined;
+ return xres;
+ }
+
+
+ {
+ ERL_NIF_TERM keys[] = {esock_atom_ifindex,
+ esock_atom_spec_dst,
+ esock_atom_addr};
+ ERL_NIF_TERM vals[] = {ifIndex, specDst, addr};
+ unsigned int numKeys = sizeof(keys) / sizeof(ERL_NIF_TERM);
+ unsigned int numVals = sizeof(vals) / sizeof(ERL_NIF_TERM);
+
+ ESOCK_ASSERT( (numKeys == numVals) );
+
+ if (!MKMA(env, keys, vals, numKeys, eCMsgHdrData)) {
+ *eCMsgHdrData = esock_atom_undefined;
+ return ESOCK_STR_EINVAL;
+ }
+ }
+ }
+ break;
+#endif
+
+#if defined(IP_ORIGDSTADDR)
+ case IP_ORIGDSTADDR:
+ if ((xres = esock_encode_sockaddr_in4(env,
+ (struct sockaddr_in*) dataP,
+ dataLen,
+ eCMsgHdrData)) != NULL) {
+ *eCMsgHdrData = esock_atom_undefined;
+ return xres;
+ }
+ break;
+#endif
+
+ default:
+ *eCMsgHdrData = MKSBIN(env, ctrlBuf, dataPos, dataLen);
+ break;
+ }
+
+ return xres;
+}
+
+
+
+/* +++ encode_cmsghdr_data_ipv6 +++
+ *
+ * Encode the data part when protocol = IPv6 of the cmsghdr().
+ *
+ */
+#if defined(HAVE_IPV6)
+static
+char* encode_cmsghdr_data_ipv6(ErlNifEnv* env,
+ ERL_NIF_TERM ctrlBuf,
+ int type,
+ unsigned char* dataP,
+ size_t dataPos,
+ size_t dataLen,
+ ERL_NIF_TERM* eCMsgHdrData)
+{
+ char* xres;
+
+ switch (type) {
+#if defined(IPV6_PKTINFO)
+ case IPV6_PKTINFO:
+ {
+ struct in6_pktinfo* pktInfoP = (struct in6_pktinfo*) dataP;
+ ERL_NIF_TERM ifIndex = MKI(env, pktInfoP->ipi6_ifindex);
+ ERL_NIF_TERM addr;
+
+ if ((xres = esock_encode_ip6_address(env,
+ &pktInfoP->ipi6_addr,
+ &addr)) != NULL) {
+ *eCMsgHdrData = esock_atom_undefined;
+ return xres;
+ }
+
+ {
+ ERL_NIF_TERM keys[] = {esock_atom_addr, esock_atom_ifindex};
+ ERL_NIF_TERM vals[] = {addr, ifIndex};
+ unsigned int numKeys = sizeof(keys) / sizeof(ERL_NIF_TERM);
+ unsigned int numVals = sizeof(vals) / sizeof(ERL_NIF_TERM);
+
+ ESOCK_ASSERT( (numKeys == numVals) );
+
+ if (!MKMA(env, keys, vals, numKeys, eCMsgHdrData)) {
+ *eCMsgHdrData = esock_atom_undefined;
+ return ESOCK_STR_EINVAL;
+ }
+ }
+ }
+ break;
+#endif
+
+ default:
+ *eCMsgHdrData = MKSBIN(env, ctrlBuf, dataPos, dataLen);
+ break;
+ }
+
+ return NULL;
+}
+#endif
+
+
+
+/* +++ encode_msghdr_flags +++
+ *
+ * Encode a list of msghdr_flag().
+ *
+ * The following flags are handled: eor | trunc | ctrunc | oob | errqueue.
+ */
+
+extern
+char* encode_msghdr_flags(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ int msgFlags,
+ ERL_NIF_TERM* flags)
+{
+ SSDBG( descP,
+ ("SOCKET", "encode_cmsghdrs_flags -> entry with"
+ "\r\n msgFlags: %d (0x%lX)"
+ "\r\n", msgFlags, msgFlags) );
+
+ if (msgFlags == 0) {
+ *flags = MKEL(env);
+ return NULL;
+ } else {
+ SocketTArray ta = TARRAY_CREATE(10); // Just to be on the safe side
+
+#if defined(MSG_EOR)
+ if ((msgFlags & MSG_EOR) == MSG_EOR)
+ TARRAY_ADD(ta, esock_atom_eor);
+#endif
+
+#if defined(MSG_TRUNC)
+ if ((msgFlags & MSG_TRUNC) == MSG_TRUNC)
+ TARRAY_ADD(ta, esock_atom_trunc);
+#endif
+
+#if defined(MSG_CTRUNC)
+ if ((msgFlags & MSG_CTRUNC) == MSG_CTRUNC)
+ TARRAY_ADD(ta, esock_atom_ctrunc);
+#endif
+
+#if defined(MSG_OOB)
+ if ((msgFlags & MSG_OOB) == MSG_OOB)
+ TARRAY_ADD(ta, esock_atom_oob);
+#endif
+
+#if defined(MSG_ERRQUEUE)
+ if ((msgFlags & MSG_ERRQUEUE) == MSG_ERRQUEUE)
+ TARRAY_ADD(ta, esock_atom_errqueue);
+#endif
+
+ SSDBG( descP,
+ ("SOCKET", "esock_encode_cmsghdrs -> flags processed when"
+ "\r\n TArray size: %d"
+ "\r\n", TARRAY_SZ(ta)) );
+
+ TARRAY_TOLIST(ta, env, flags);
+
+ return NULL;
+ }
+}
+
+
+
+
+/* +++ decode the linger value +++
+ * The (socket) linger option is provided as a two tuple:
+ *
+ * {OnOff :: boolean(), Time :: integer()}
+ *
+ */
+static
+BOOLEAN_T decode_sock_linger(ErlNifEnv* env, ERL_NIF_TERM eVal, struct linger* valP)
+{
+ const ERL_NIF_TERM* lt; // The array of the elements of the tuple
+ int sz; // The size of the tuple - should be 2
+ BOOLEAN_T onOff;
+ int secs;
+
+ if (!GET_TUPLE(env, eVal, &sz, &lt))
+ return FALSE;
+
+ if (sz != 2)
+ return FALSE;
+
+
+ /* So fas so good - now check the two elements of the tuple. */
+
+ onOff = esock_decode_bool(lt[0]);
+
+ if (!GET_INT(env, lt[1], &secs))
+ return FALSE;
+
+ valP->l_onoff = (onOff) ? 1 : 0;
+ valP->l_linger = secs;
+
+ return TRUE;
+}
+
+
+
+/* +++ decode the ip socket option TOS +++
+ * The (ip) option can be provide in two ways:
+ *
+ * atom() | integer()
+ *
+ * When its an atom it can have the values:
+ *
+ * lowdelay | throughput | reliability | mincost
+ *
+ */
+#if defined(IP_TOS)
+static
+BOOLEAN_T decode_ip_tos(ErlNifEnv* env, ERL_NIF_TERM eVal, int* val)
+{
+ BOOLEAN_T result = FALSE;
+
+ if (IS_ATOM(env, eVal)) {
+
+ if (COMPARE(eVal, esock_atom_lowdelay) == 0) {
+ *val = IPTOS_LOWDELAY;
+ result = TRUE;
+ } else if (COMPARE(eVal, esock_atom_throughput) == 0) {
+ *val = IPTOS_THROUGHPUT;
+ result = TRUE;
+ } else if (COMPARE(eVal, esock_atom_reliability) == 0) {
+ *val = IPTOS_RELIABILITY;
+ result = TRUE;
+#if defined(IPTOS_MINCOST)
+ } else if (COMPARE(eVal, esock_atom_mincost) == 0) {
+ *val = IPTOS_MINCOST;
+ result = TRUE;
+#endif
+ } else {
+ *val = -1;
+ result = FALSE;
+ }
+
+ } else if (IS_NUM(env, eVal)) {
+
+ if (GET_INT(env, eVal, val)) {
+ result = TRUE;
+ } else {
+ *val = -1;
+ result = FALSE;
+ }
+
+ } else {
+ *val = -1;
+ result = FALSE;
+ }
+
+ return result;
+}
+#endif
+
+
+
+/* +++ decode the ip socket option MTU_DISCOVER +++
+ * The (ip) option can be provide in two ways:
+ *
+ * atom() | integer()
+ *
+ * When its an atom it can have the values:
+ *
+ * want | dont | do | probe
+ *
+ */
+#if defined(IP_MTU_DISCOVER)
+static
+char* decode_ip_pmtudisc(ErlNifEnv* env, ERL_NIF_TERM eVal, int* val)
+{
+ char* res = NULL;
+
+ if (IS_ATOM(env, eVal)) {
+
+ if (COMPARE(eVal, atom_want) == 0) {
+ *val = IP_PMTUDISC_WANT;
+ } else if (COMPARE(eVal, atom_dont) == 0) {
+ *val = IP_PMTUDISC_DONT;
+ } else if (COMPARE(eVal, atom_do) == 0) {
+ *val = IP_PMTUDISC_DO;
+#if defined(IP_PMTUDISC_PROBE)
+ } else if (COMPARE(eVal, atom_probe) == 0) {
+ *val = IP_PMTUDISC_PROBE;
+#endif
+ } else {
+ *val = -1;
+ res = ESOCK_STR_EINVAL;
+ }
+
+ } else if (IS_NUM(env, eVal)) {
+
+ if (!GET_INT(env, eVal, val)) {
+ *val = -1;
+ res = ESOCK_STR_EINVAL;
+ }
+
+ } else {
+
+ *val = -1;
+ res = ESOCK_STR_EINVAL;
+
+ }
+
+ return res;
+}
+#endif
+
+
+
+/* +++ decode the ipv6 socket option MTU_DISCOVER +++
+ * The (ip) option can be provide in two ways:
+ *
+ * atom() | integer()
+ *
+ * When its an atom it can have the values:
+ *
+ * want | dont | do | probe
+ *
+ */
+#if defined(IPV6_MTU_DISCOVER)
+static
+char* decode_ipv6_pmtudisc(ErlNifEnv* env, ERL_NIF_TERM eVal, int* val)
+{
+ char* res = NULL;
+
+ if (IS_ATOM(env, eVal)) {
+
+ if (COMPARE(eVal, atom_want) == 0) {
+ *val = IPV6_PMTUDISC_WANT;
+ } else if (COMPARE(eVal, atom_dont) == 0) {
+ *val = IPV6_PMTUDISC_DONT;
+ } else if (COMPARE(eVal, atom_do) == 0) {
+ *val = IPV6_PMTUDISC_DO;
+#if defined(IPV6_PMTUDISC_PROBE)
+ } else if (COMPARE(eVal, atom_probe) == 0) {
+ *val = IPV6_PMTUDISC_PROBE;
+#endif
+ } else {
+ *val = -1;
+ res = ESOCK_STR_EINVAL;
+ }
+
+ } else if (IS_NUM(env, eVal)) {
+
+ if (!GET_INT(env, eVal, val)) {
+ *val = -1;
+ res = ESOCK_STR_EINVAL;
+ }
+
+ } else {
+
+ *val = -1;
+ res = ESOCK_STR_EINVAL;
+
+ }
+
+ return res;
+}
+#endif
+
+
+
+/* +++ encode the ip socket option MTU_DISCOVER +++
+ * The (ip) option can be provide in two ways:
+ *
+ * atom() | integer()
+ *
+ * If its one of the "known" values, it will be an atom:
+ *
+ * want | dont | do | probe
+ *
+ */
+#if defined(IP_MTU_DISCOVER)
+static
+void encode_ip_pmtudisc(ErlNifEnv* env, int val, ERL_NIF_TERM* eVal)
+{
+ switch (val) {
+ case IP_PMTUDISC_WANT:
+ *eVal = atom_want;
+ break;
+
+ case IP_PMTUDISC_DONT:
+ *eVal = atom_dont;
+ break;
+
+ case IP_PMTUDISC_DO:
+ *eVal = atom_do;
+ break;
+
+#if defined(IP_PMTUDISC_PROBE)
+ case IP_PMTUDISC_PROBE:
+ *eVal = atom_probe;
+ break;
+#endif
+
+ default:
+ *eVal = MKI(env, val);
+ break;
+ }
+
+ return;
+}
+#endif
+
+
+
+/* +++ encode the ipv6 socket option MTU_DISCOVER +++
+ * The (ipv6) option can be provide in two ways:
+ *
+ * atom() | integer()
+ *
+ * If its one of the "known" values, it will be an atom:
+ *
+ * want | dont | do | probe
+ *
+ */
+#if defined(IPV6_MTU_DISCOVER)
+static
+void encode_ipv6_pmtudisc(ErlNifEnv* env, int val, ERL_NIF_TERM* eVal)
+{
+ switch (val) {
+ case IPV6_PMTUDISC_WANT:
+ *eVal = atom_want;
+ break;
+
+ case IPV6_PMTUDISC_DONT:
+ *eVal = atom_dont;
+ break;
+
+ case IPV6_PMTUDISC_DO:
+ *eVal = atom_do;
+ break;
+
+#if defined(IPV6_PMTUDISC_PROBE)
+ case IPV6_PMTUDISC_PROBE:
+ *eVal = atom_probe;
+ break;
+#endif
+
+ default:
+ *eVal = MKI(env, val);
+ break;
+ }
+
+ return;
+}
+#endif
+
+
+
+/* +++ decocde the native getopt option +++
+ * The option is in this case provide in the form of a two tuple:
+ *
+ * {NativeOpt, ValueSize}
+ *
+ * NativeOpt :: integer()
+ * ValueSize :: int | bool | non_neg_integer()
+ *
+ */
+static
+BOOLEAN_T decode_native_get_opt(ErlNifEnv* env, ERL_NIF_TERM eVal,
+ int* opt, Uint16* valueType, int* valueSz)
+{
+ const ERL_NIF_TERM* nativeOptT;
+ int nativeOptTSz;
+
+ /* First, get the tuple and verify its size (2) */
+
+ if (!GET_TUPLE(env, eVal, &nativeOptTSz, &nativeOptT))
+ return FALSE;
+
+ if (nativeOptTSz != 2)
+ return FALSE;
+
+ /* So far so good.
+ * First element is an integer.
+ * Second element is an atom or an integer.
+ * The only "types" that we support at the moment are:
+ *
+ * bool - Which is actually a integer
+ * (but will be *returned* as a boolean())
+ * int - Just short for integer
+ */
+
+ if (!GET_INT(env, nativeOptT[0], opt))
+ return FALSE;
+
+ if (IS_ATOM(env, nativeOptT[1])) {
+
+ if (COMPARE(nativeOptT[1], atom_int) == 0) {
+ SGDBG( ("SOCKET", "decode_native_get_opt -> int\r\n") );
+ *valueType = SOCKET_OPT_VALUE_TYPE_INT;
+ *valueSz = sizeof(int); // Just to be sure
+ } else if (COMPARE(nativeOptT[1], atom_bool) == 0) {
+ SGDBG( ("SOCKET", "decode_native_get_opt -> bool\r\n") );
+ *valueType = SOCKET_OPT_VALUE_TYPE_BOOL;
+ *valueSz = sizeof(int); // Just to be sure
+ } else {
+ return FALSE;
+ }
+ } else if (IS_NUM(env, nativeOptT[1])) {
+ if (GET_INT(env, nativeOptT[1], valueSz)) {
+ SGDBG( ("SOCKET", "decode_native_get_opt -> unspec\r\n") );
+ *valueType = SOCKET_OPT_VALUE_TYPE_UNSPEC;
+ } else {
+ return FALSE;
+ }
+ } else {
+ return FALSE;
+ }
+
+ SGDBG( ("SOCKET", "decode_native_get_opt -> done\r\n") );
+
+ return TRUE;
+}
+
+
+
+/* +++ encode the ip socket option tos +++
+ * The (ip) option can be provide as:
+ *
+ * lowdelay | throughput | reliability | mincost | integer()
+ *
+ */
+static
+ERL_NIF_TERM encode_ip_tos(ErlNifEnv* env, int val)
+{
+ ERL_NIF_TERM result;
+
+ switch (IPTOS_TOS(val)) {
+ case IPTOS_LOWDELAY:
+ result = esock_make_ok2(env, esock_atom_lowdelay);
+ break;
+
+ case IPTOS_THROUGHPUT:
+ result = esock_make_ok2(env, esock_atom_throughput);
+ break;
+
+ case IPTOS_RELIABILITY:
+ result = esock_make_ok2(env, esock_atom_reliability);
+ break;
+
+#if defined(IPTOS_MINCOST)
+ case IPTOS_MINCOST:
+ result = esock_make_ok2(env, esock_atom_mincost);
+ break;
+#endif
+
+ default:
+ result = esock_make_ok2(env, MKI(env, val));
+ break;
+ }
+
+ return result;
+}
+
+
+
+
+
+/* *** alloc_descriptor ***
+ * Allocate and perform basic initialization of a socket descriptor.
+ *
+ */
+static
+SocketDescriptor* alloc_descriptor(SOCKET sock, HANDLE event)
+{
+ SocketDescriptor* descP;
+
+ if ((descP = enif_alloc_resource(sockets, sizeof(SocketDescriptor))) != NULL) {
+ char buf[64]; /* Buffer used for building the mutex name */
+
+ // This needs to be released when the socket is closed!
+ descP->env = enif_alloc_env();
+
+ sprintf(buf, "socket[w,%d]", sock);
+ descP->writeMtx = MCREATE(buf);
+ descP->currentWriterP = NULL; // currentWriter not used
+ descP->writersQ.first = NULL;
+ descP->writersQ.last = NULL;
+ descP->isWritable = FALSE; // TRUE;
+ descP->writePkgCnt = 0;
+ descP->writeByteCnt = 0;
+ descP->writeTries = 0;
+ descP->writeWaits = 0;
+ descP->writeFails = 0;
+
+ sprintf(buf, "socket[r,%d]", sock);
+ descP->readMtx = MCREATE(buf);
+ descP->currentReaderP = NULL; // currentReader not used
+ descP->readersQ.first = NULL;
+ descP->readersQ.last = NULL;
+ descP->isReadable = FALSE; // TRUE;
+ descP->readPkgCnt = 0;
+ descP->readByteCnt = 0;
+ descP->readTries = 0;
+ descP->readWaits = 0;
+
+ sprintf(buf, "socket[acc,%d]", sock);
+ descP->accMtx = MCREATE(buf);
+ descP->currentAcceptorP = NULL; // currentAcceptor not used
+ descP->acceptorsQ.first = NULL;
+ descP->acceptorsQ.last = NULL;
+
+ sprintf(buf, "socket[close,%d]", sock);
+ descP->closeMtx = MCREATE(buf);
+ descP->closeEnv = NULL;
+ descP->closeRef = esock_atom_undefined;
+
+ descP->rBufSz = SOCKET_RECV_BUFFER_SIZE_DEFAULT;
+ descP->rNum = 0;
+ descP->rNumCnt = 0;
+ descP->rCtrlSz = SOCKET_RECV_CTRL_BUFFER_SIZE_DEFAULT;
+ descP->wCtrlSz = SOCKET_SEND_CTRL_BUFFER_SIZE_DEFAULT;
+ descP->iow = FALSE;
+ descP->dbg = SOCKET_DEBUG_DEFAULT;
+
+ descP->sock = sock;
+ descP->event = event;
+
+ MON_INIT(&descP->currentWriter.mon);
+ MON_INIT(&descP->currentReader.mon);
+ MON_INIT(&descP->currentAcceptor.mon);
+ MON_INIT(&descP->ctrlMon);
+ MON_INIT(&descP->closerMon);
+ }
+
+ return descP;
+}
+
+
+
+/* decrement counters for when a socket is closed */
+static
+void dec_socket(int domain, int type, int protocol)
+{
+ MLOCK(data.cntMtx);
+
+ cnt_dec(&data.numSockets, 1);
+
+ if (domain == AF_INET)
+ cnt_dec(&data.numDomainInet, 1);
+#if defined(HAVE_IN6) && defined(AF_INET6)
+ else if (domain == AF_INET6)
+ cnt_dec(&data.numDomainInet6, 1);
+#endif
+#if defined(HAVE_SYS_UN_H)
+ else if (domain == AF_UNIX)
+ cnt_dec(&data.numDomainInet6, 1);
+#endif
+
+ if (type == SOCK_STREAM)
+ cnt_dec(&data.numTypeStreams, 1);
+ else if (type == SOCK_DGRAM)
+ cnt_dec(&data.numTypeDGrams, 1);
+#ifdef HAVE_SCTP
+ else if (type == SOCK_SEQPACKET)
+ cnt_dec(&data.numTypeSeqPkgs, 1);
+#endif
+
+ if (protocol == IPPROTO_IP)
+ cnt_dec(&data.numProtoIP, 1);
+ else if (protocol == IPPROTO_TCP)
+ cnt_dec(&data.numProtoTCP, 1);
+ else if (protocol == IPPROTO_UDP)
+ cnt_dec(&data.numProtoUDP, 1);
+#if defined(HAVE_SCTP)
+ else if (protocol == IPPROTO_SCTP)
+ cnt_dec(&data.numProtoSCTP, 1);
+#endif
+
+ MUNLOCK(data.cntMtx);
+}
+
+
+/* increment counters for when a socket is opened */
+static
+void inc_socket(int domain, int type, int protocol)
+{
+ MLOCK(data.cntMtx);
+
+ cnt_inc(&data.numSockets, 1);
+
+ if (domain == AF_INET)
+ cnt_inc(&data.numDomainInet, 1);
+#if defined(HAVE_IN6) && defined(AF_INET6)
+ else if (domain == AF_INET6)
+ cnt_inc(&data.numDomainInet6, 1);
+#endif
+#if defined(HAVE_SYS_UN_H)
+ else if (domain == AF_UNIX)
+ cnt_inc(&data.numDomainInet6, 1);
+#endif
+
+ if (type == SOCK_STREAM)
+ cnt_inc(&data.numTypeStreams, 1);
+ else if (type == SOCK_DGRAM)
+ cnt_inc(&data.numTypeDGrams, 1);
+#ifdef HAVE_SCTP
+ else if (type == SOCK_SEQPACKET)
+ cnt_inc(&data.numTypeSeqPkgs, 1);
+#endif
+
+ if (protocol == IPPROTO_IP)
+ cnt_inc(&data.numProtoIP, 1);
+ else if (protocol == IPPROTO_TCP)
+ cnt_inc(&data.numProtoTCP, 1);
+ else if (protocol == IPPROTO_UDP)
+ cnt_inc(&data.numProtoUDP, 1);
+#if defined(HAVE_SCTP)
+ else if (protocol == IPPROTO_SCTP)
+ cnt_inc(&data.numProtoSCTP, 1);
+#endif
+
+ MUNLOCK(data.cntMtx);
+}
+
+
+
+/* compare_pids - Test if two pids are equal
+ *
+ */
+static
+int compare_pids(ErlNifEnv* env,
+ const ErlNifPid* pid1,
+ const ErlNifPid* pid2)
+{
+ ERL_NIF_TERM p1 = enif_make_pid(env, pid1);
+ ERL_NIF_TERM p2 = enif_make_pid(env, pid2);
+
+ return enif_is_identical(p1, p2);
+}
+#endif // if !defined(__WIN32__)
+
+
+
+/* ----------------------------------------------------------------------
+ * D e c o d e / E n c o d e F u n c t i o n s
+ * ----------------------------------------------------------------------
+ */
+
+/* edomain2domain - convert internal (erlang) domain to (proper) domain
+ *
+ * Note that only a subset is supported.
+ */
+#if !defined(__WIN32__)
+static
+BOOLEAN_T edomain2domain(int edomain, int* domain)
+{
+ switch (edomain) {
+ case SOCKET_DOMAIN_INET:
+ *domain = AF_INET;
+ break;
+
+#if defined(HAVE_IN6) && defined(AF_INET6)
+ case SOCKET_DOMAIN_INET6:
+ *domain = AF_INET6;
+ break;
+#endif
+#ifdef HAVE_SYS_UN_H
+ case SOCKET_DOMAIN_LOCAL:
+ *domain = AF_UNIX;
+ break;
+#endif
+
+ default:
+ *domain = -1;
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+
+/* etype2type - convert internal (erlang) type to (proper) type
+ *
+ * Note that only a subset is supported.
+ */
+static
+BOOLEAN_T etype2type(int etype, int* type)
+{
+ switch (etype) {
+ case SOCKET_TYPE_STREAM:
+ *type = SOCK_STREAM;
+ break;
+
+ case SOCKET_TYPE_DGRAM:
+ *type = SOCK_DGRAM;
+ break;
+
+ case SOCKET_TYPE_RAW:
+ *type = SOCK_RAW;
+ break;
+
+#ifdef HAVE_SCTP
+ case SOCKET_TYPE_SEQPACKET:
+ *type = SOCK_SEQPACKET;
+ break;
+#endif
+
+ default:
+ *type = -1;
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+
+/* eproto2proto - convert internal (erlang) protocol to (proper) protocol
+ *
+ * Note that only a subset is supported.
+ */
+static
+BOOLEAN_T eproto2proto(ErlNifEnv* env,
+ ERL_NIF_TERM eproto,
+ int* proto)
+{
+ if (IS_NUM(env, eproto)) {
+ int ep;
+
+ if (!GET_INT(env, eproto, &ep)) {
+ *proto = -1;
+ return FALSE;
+ }
+
+ switch (ep) {
+ case SOCKET_PROTOCOL_IP:
+ *proto = IPPROTO_IP;
+ break;
+
+ case SOCKET_PROTOCOL_TCP:
+ *proto = IPPROTO_TCP;
+ break;
+
+ case SOCKET_PROTOCOL_UDP:
+ *proto = IPPROTO_UDP;
+ break;
+
+#if defined(HAVE_SCTP)
+ case SOCKET_PROTOCOL_SCTP:
+ *proto = IPPROTO_SCTP;
+ break;
+#endif
+
+ case SOCKET_PROTOCOL_ICMP:
+ *proto = IPPROTO_ICMP;
+ break;
+
+ case SOCKET_PROTOCOL_IGMP:
+ *proto = IPPROTO_IGMP;
+ break;
+
+ default:
+ *proto = -2;
+ return FALSE;
+ }
+ } else {
+ const ERL_NIF_TERM* a;
+ int sz;
+
+ if (!GET_TUPLE(env, eproto, &sz, &a)) {
+ *proto = -3;
+ return FALSE;
+ }
+
+ if (sz != 2) {
+ *proto = -4;
+ return FALSE;
+ }
+
+ if (COMPARE(a[0], esock_atom_raw) != 0) {
+ *proto = -5;
+ return FALSE;
+ }
+
+ if (!GET_INT(env, a[1], proto)) {
+ *proto = -6;
+ return FALSE;
+ }
+ }
+
+ return TRUE;
+}
+
+
+#ifdef HAVE_SETNS
+ /* emap2netns - extract the netns field from the extra map
+ *
+ * Note that currently we only support one extra option, the netns.
+ */
+static
+BOOLEAN_T emap2netns(ErlNifEnv* env, ERL_NIF_TERM map, char** netns)
+{
+ size_t sz;
+ ERL_NIF_TERM key;
+ ERL_NIF_TERM value;
+ unsigned int len;
+ char* buf;
+ int written;
+
+ /* Note that its acceptable that the extra map is empty */
+ if (!enif_get_map_size(env, map, &sz) ||
+ (sz != 1)) {
+ *netns = NULL;
+ return TRUE;
+ }
+
+ /* The currently only supported extra option is: netns */
+ key = enif_make_atom(env, "netns");
+ if (!GET_MAP_VAL(env, map, key, &value)) {
+ *netns = NULL; // Just in case...
+ return FALSE;
+ }
+
+ /* So far so good. The value should be a string, check. */
+ if (!enif_is_list(env, value)) {
+ *netns = NULL; // Just in case...
+ return FALSE;
+ }
+
+ if (!enif_get_list_length(env, value, &len)) {
+ *netns = NULL; // Just in case...
+ return FALSE;
+ }
+
+ if ((buf = MALLOC(len+1)) == NULL) {
+ *netns = NULL; // Just in case...
+ return FALSE;
+ }
+
+ written = enif_get_string(env, value, buf, len+1, ERL_NIF_LATIN1);
+ if (written == (len+1)) {
+ *netns = buf;
+ return TRUE;
+ } else {
+ *netns = NULL; // Just in case...
+ return FALSE;
+ }
+}
+#endif
+
+
+/* esendflags2sendflags - convert internal (erlang) send flags to (proper)
+ * send flags.
+ */
+static
+BOOLEAN_T esendflags2sendflags(unsigned int eflags, int* flags)
+{
+ unsigned int ef;
+ int tmp = 0;
+
+ /* First, check if we have any flags at all */
+ if (eflags == 0) {
+ *flags = 0;
+ return TRUE;
+ }
+
+ for (ef = SOCKET_SEND_FLAG_LOW; ef <= SOCKET_SEND_FLAG_HIGH; ef++) {
+
+ switch (ef) {
+#if defined(MSG_CONFIRM)
+ case SOCKET_SEND_FLAG_CONFIRM:
+ if ((1 << SOCKET_SEND_FLAG_CONFIRM) & eflags)
+ tmp |= MSG_CONFIRM;
+ break;
+#endif
+
+#if defined(MSG_DONTROUTE)
+ case SOCKET_SEND_FLAG_DONTROUTE:
+ if ((1 << SOCKET_SEND_FLAG_DONTROUTE) & eflags)
+ tmp |= MSG_DONTROUTE;
+ break;
+#endif
+
+#if defined(MSG_EOR)
+ case SOCKET_SEND_FLAG_EOR:
+ if ((1 << SOCKET_SEND_FLAG_EOR) & eflags)
+ tmp |= MSG_EOR;
+ break;
+#endif
+
+#if defined(MSG_MORE)
+ case SOCKET_SEND_FLAG_MORE:
+ if ((1 << SOCKET_SEND_FLAG_MORE) & eflags)
+ tmp |= MSG_MORE;
+ break;
+#endif
+
+#if defined(MSG_NOSIGNAL)
+ case SOCKET_SEND_FLAG_NOSIGNAL:
+ if ((1 << SOCKET_SEND_FLAG_NOSIGNAL) & eflags)
+ tmp |= MSG_NOSIGNAL;
+ break;
+#endif
+
+#if defined(MSG_OOB)
+ case SOCKET_SEND_FLAG_OOB:
+ if ((1 << SOCKET_SEND_FLAG_OOB) & eflags)
+ tmp |= MSG_OOB;
+ break;
+#endif
+
+ default:
+ return FALSE;
+ }
+
+ }
+
+ *flags = tmp;
+
+ return TRUE;
+}
+
+
+
+/* erecvflags2recvflags - convert internal (erlang) send flags to (proper)
+ * send flags.
+ */
+static
+BOOLEAN_T erecvflags2recvflags(unsigned int eflags, int* flags)
+{
+ unsigned int ef;
+ int tmp = 0;
+
+ SGDBG( ("SOCKET", "erecvflags2recvflags -> entry with"
+ "\r\n eflags: %d"
+ "\r\n", eflags) );
+
+ if (eflags == 0) {
+ *flags = 0;
+ return TRUE;
+ }
+
+ for (ef = SOCKET_RECV_FLAG_LOW; ef <= SOCKET_RECV_FLAG_HIGH; ef++) {
+
+ SGDBG( ("SOCKET", "erecvflags2recvflags -> iteration"
+ "\r\n ef: %d"
+ "\r\n tmp: %d"
+ "\r\n", ef, tmp) );
+
+ switch (ef) {
+#if defined(MSG_CMSG_CLOEXEC)
+ case SOCKET_RECV_FLAG_CMSG_CLOEXEC:
+ if ((1 << SOCKET_RECV_FLAG_CMSG_CLOEXEC) & eflags)
+ tmp |= MSG_CMSG_CLOEXEC;
+ break;
+#endif
+
+#if defined(MSG_ERRQUEUE)
+ case SOCKET_RECV_FLAG_ERRQUEUE:
+ if ((1 << SOCKET_RECV_FLAG_ERRQUEUE) & eflags)
+ tmp |= MSG_ERRQUEUE;
+ break;
+#endif
+
+#if defined(MSG_OOB)
+ case SOCKET_RECV_FLAG_OOB:
+ if ((1 << SOCKET_RECV_FLAG_OOB) & eflags)
+ tmp |= MSG_OOB;
+ break;
+#endif
+
+ /*
+ * <KOLLA>
+ *
+ * We need to handle this, because it may effect the read algorithm
+ *
+ * </KOLLA>
+ */
+#if defined(MSG_PEEK)
+ case SOCKET_RECV_FLAG_PEEK:
+ if ((1 << SOCKET_RECV_FLAG_PEEK) & eflags)
+ tmp |= MSG_PEEK;
+ break;
+#endif
+
+#if defined(MSG_TRUNC)
+ case SOCKET_RECV_FLAG_TRUNC:
+ if ((1 << SOCKET_RECV_FLAG_TRUNC) & eflags)
+ tmp |= MSG_TRUNC;
+ break;
+#endif
+
+ default:
+ return FALSE;
+ }
+
+ }
+
+ *flags = tmp;
+
+ return TRUE;
+}
+
+
+
+/* eproto2proto - convert internal (erlang) protocol to (proper) protocol
+ *
+ * Note that only a subset is supported.
+ */
+static
+BOOLEAN_T ehow2how(unsigned int ehow, int* how)
+{
+ switch (ehow) {
+ case SOCKET_SHUTDOWN_HOW_RD:
+ *how = SHUT_RD;
+ break;
+
+ case SOCKET_SHUTDOWN_HOW_WR:
+ *how = SHUT_WR;
+ break;
+
+ case SOCKET_SHUTDOWN_HOW_RDWR:
+ *how = SHUT_RDWR;
+ break;
+
+ default:
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+
+
+#if defined(HAVE_SYS_UN_H) || defined(SO_BINDTODEVICE)
+/* strnlen doesn't exist everywhere */
+/*
+static
+size_t my_strnlen(const char *s, size_t maxlen)
+{
+ size_t i = 0;
+ while (i < maxlen && s[i] != '\0')
+ i++;
+ return i;
+}
+*/
+#endif
+
+
+/* Send an error closed message to the specified process:
+ *
+ * This message is for processes that are waiting in the
+ * erlang API functions for a select message.
+ */
+/*
+static
+char* send_msg_error_closed(ErlNifEnv* env,
+ ErlNifPid* pid)
+{
+ return send_msg_error(env, atom_closed, pid);
+}
+*/
+
+/* Send an error message to the specified process:
+ * A message in the form:
+ *
+ * {error, Reason}
+ *
+ * This message is for processes that are waiting in the
+ * erlang API functions for a select message.
+ */
+/*
+static
+char* send_msg_error(ErlNifEnv* env,
+ ERL_NIF_TERM reason,
+ ErlNifPid* pid)
+{
+ ERL_NIF_TERM msg = enif_make_tuple2(env, atom_error, reason);
+
+ return send_msg(env, msg, pid);
+}
+*/
+
+
+/* Send an close message to the specified process:
+ * A message in the form:
+ *
+ * {'$socket', SockRef, close, CloseRef}
+ *
+ * This message is for processes that is waiting in the
+ * erlang API (close-) function for the socket to be "closed"
+ * (actually that the 'stop' callback function has been called).
+ */
+static
+char* esock_send_close_msg(ErlNifEnv* env,
+ SocketDescriptor* descP)
+{
+ ERL_NIF_TERM sockRef = enif_make_resource(descP->closeEnv, descP);
+ char* res = esock_send_socket_msg(env,
+ sockRef,
+ esock_atom_close,
+ descP->closeRef,
+ &descP->closerPid,
+ descP->closeEnv);
+
+ descP->closeEnv = NULL;
+
+ return res;
+}
+
+
+/* Send an abort message to the specified process:
+ * A message in the form:
+ *
+ * {'$socket', SockRef, abort, {RecvRef, Reason}}
+ *
+ * This message is for processes that is waiting in the
+ * erlang API functions for a select message.
+ */
+static
+char* esock_send_abort_msg(ErlNifEnv* env,
+ ERL_NIF_TERM sockRef,
+ ERL_NIF_TERM recvRef,
+ ERL_NIF_TERM reason,
+ ErlNifPid* pid)
+{
+ ErlNifEnv* msg_env = enif_alloc_env();
+ ERL_NIF_TERM info = MKT2(msg_env,
+ enif_make_copy(msg_env, recvRef),
+ enif_make_copy(msg_env, reason));
+
+ return esock_send_socket_msg(env, sockRef, esock_atom_abort, info, pid,
+ msg_env);
+}
+
+
+/* *** esock_send_socket_msg ***
+ *
+ * This function sends a general purpose socket message to an erlang
+ * process. A general 'socket' message has the ("erlang") form:
+ *
+ * {'$socket', SockRef, Tag, Info}
+ *
+ * Where
+ *
+ * SockRef: reference()
+ * Tag: atom()
+ * Info: term()
+ *
+ */
+
+static
+char* esock_send_socket_msg(ErlNifEnv* env,
+ ERL_NIF_TERM sockRef,
+ ERL_NIF_TERM tag,
+ ERL_NIF_TERM info,
+ ErlNifPid* pid,
+ ErlNifEnv* msg_env)
+{
+ ERL_NIF_TERM msg;
+ if (!msg_env) {
+ msg_env = enif_alloc_env();
+ sockRef = enif_make_copy(msg_env, sockRef);
+ tag = enif_make_copy(msg_env, tag);
+ info = enif_make_copy(msg_env, info);
+ }
+ msg = MKT4(msg_env, esock_atom_socket_tag, sockRef, tag, info);
+
+ return esock_send_msg(env, msg, pid, msg_env);
+}
+
+
+/* Send a message to the specified process.
+ */
+static
+char* esock_send_msg(ErlNifEnv* env,
+ ERL_NIF_TERM msg,
+ ErlNifPid* pid,
+ ErlNifEnv* msg_env)
+{
+ int res = enif_send(env, pid, msg_env, msg);
+ if (msg_env)
+ enif_free_env(msg_env);
+
+ if (!res)
+ return str_exsend;
+ else
+ return NULL;
+}
+#endif // #if defined(__WIN32__)
+
+
+/* ----------------------------------------------------------------------
+ * S e l e c t W r a p p e r F u n c t i o n s
+ * ----------------------------------------------------------------------
+ */
+
+static
+int esock_select_read(ErlNifEnv* env,
+ ErlNifEvent event,
+ void* obj,
+ const ErlNifPid* pid,
+ ERL_NIF_TERM ref)
+{
+ return enif_select(env, event, (ERL_NIF_SELECT_READ), obj, pid, ref);
+}
+
+
+static
+int esock_select_write(ErlNifEnv* env,
+ ErlNifEvent event,
+ void* obj,
+ const ErlNifPid* pid,
+ ERL_NIF_TERM ref)
+{
+ return enif_select(env, event, (ERL_NIF_SELECT_WRITE), obj, pid, ref);
+}
+
+
+static
+int esock_select_stop(ErlNifEnv* env,
+ ErlNifEvent event,
+ void* obj)
+{
+ return enif_select(env, event, (ERL_NIF_SELECT_STOP), obj, NULL,
+ esock_atom_undefined);
+}
+
+static
+int esock_select_cancel(ErlNifEnv* env,
+ ErlNifEvent event,
+ enum ErlNifSelectFlags mode,
+ void* obj)
+{
+ return enif_select(env, event, (ERL_NIF_SELECT_CANCEL | mode), obj, NULL,
+ esock_atom_undefined);
+}
+
+
+/* ----------------------------------------------------------------------
+ * R e q u e s t Q u e u e F u n c t i o n s
+ * ----------------------------------------------------------------------
+ */
+
+/* *** acceptor search for pid ***
+ *
+ * Search for a pid in the acceptor queue.
+ */
+#if !defined(__WIN32__)
+static
+BOOLEAN_T acceptor_search4pid(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ErlNifPid* pid)
+{
+ return qsearch4pid(env, &descP->acceptorsQ, pid);
+}
+
+
+/* *** acceptor push ***
+ *
+ * Push an acceptor onto the acceptor queue.
+ * This happens when we already have atleast one current acceptor.
+ */
+static
+ERL_NIF_TERM acceptor_push(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ErlNifPid pid,
+ ERL_NIF_TERM ref)
+{
+ SocketRequestQueueElement* e = MALLOC(sizeof(SocketRequestQueueElement));
+ SocketRequestor* reqP = &e->data;
+
+ reqP->pid = pid;
+ reqP->ref = enif_make_copy(descP->env, ref);
+
+ if (MONP("acceptor_push -> acceptor request",
+ env, descP, &pid, &reqP->mon) != 0) {
+ FREE(reqP);
+ return esock_make_error(env, atom_exmon);
+ }
+
+ qpush(&descP->acceptorsQ, e);
+
+ // THIS IS OK => MAKES THE CALLER WAIT FOR ITS TURN
+ return esock_make_error(env, esock_atom_eagain);
+}
+
+
+/* *** acceptor pop ***
+ *
+ * Pop an acceptor from the acceptor queue.
+ */
+static
+BOOLEAN_T acceptor_pop(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ErlNifPid* pid,
+ // ErlNifMonitor* mon,
+ ESockMonitor* mon,
+ ERL_NIF_TERM* ref)
+{
+ SocketRequestQueueElement* e = qpop(&descP->acceptorsQ);
+
+ if (e != NULL) {
+ *pid = e->data.pid;
+ *mon = e->data.mon;
+ *ref = e->data.ref;
+ FREE(e);
+ return TRUE;
+ } else {
+ /* (acceptors) Queue was empty */
+ // *pid = NULL; we have no null value for pids
+ // *mon = NULL; we have no null value for monitors
+ *ref = esock_atom_undefined; // Just in case
+ return FALSE;
+ }
+
+}
+
+
+/* *** acceptor unqueue ***
+ *
+ * Remove an acceptor from the acceptor queue.
+ */
+static
+BOOLEAN_T acceptor_unqueue(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ const ErlNifPid* pid)
+{
+ return qunqueue(env, descP, "qunqueue -> waiting acceptor",
+ &descP->acceptorsQ, pid);
+}
+
+
+
+/* *** writer search for pid ***
+ *
+ * Search for a pid in the writer queue.
+ */
+static
+BOOLEAN_T writer_search4pid(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ErlNifPid* pid)
+{
+ return qsearch4pid(env, &descP->writersQ, pid);
+}
+
+
+/* *** writer push ***
+ *
+ * Push an writer onto the writer queue.
+ * This happens when we already have atleast one current writer.
+ */
+static
+ERL_NIF_TERM writer_push(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ErlNifPid pid,
+ ERL_NIF_TERM ref)
+{
+ SocketRequestQueueElement* e = MALLOC(sizeof(SocketRequestQueueElement));
+ SocketRequestor* reqP = &e->data;
+
+ reqP->pid = pid;
+ reqP->ref = enif_make_copy(descP->env, ref);
+
+ if (MONP("writer_push -> writer request",
+ env, descP, &pid, &reqP->mon) != 0) {
+ FREE(reqP);
+ return esock_make_error(env, atom_exmon);
+ }
+
+ qpush(&descP->writersQ, e);
+
+ // THIS IS OK => MAKES THE CALLER WAIT FOR ITS TURN
+ return esock_make_error(env, esock_atom_eagain);
+}
+
+
+/* *** writer pop ***
+ *
+ * Pop an writer from the writer queue.
+ */
+static
+BOOLEAN_T writer_pop(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ErlNifPid* pid,
+ // ErlNifMonitor* mon,
+ ESockMonitor* mon,
+ ERL_NIF_TERM* ref)
+{
+ SocketRequestQueueElement* e = qpop(&descP->writersQ);
+
+ if (e != NULL) {
+ *pid = e->data.pid;
+ *mon = e->data.mon;
+ *ref = e->data.ref; // At this point the ref has already been copied (env)
+ FREE(e);
+ return TRUE;
+ } else {
+ /* (writers) Queue was empty */
+ // *pid = NULL; we have no null value for pids
+ // *mon = NULL; we have no null value for monitors
+ *ref = esock_atom_undefined; // Just in case
+ return FALSE;
+ }
+
+}
+
+
+/* *** writer unqueue ***
+ *
+ * Remove an writer from the writer queue.
+ */
+static
+BOOLEAN_T writer_unqueue(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ const ErlNifPid* pid)
+{
+ return qunqueue(env, descP, "qunqueue -> waiting writer",
+ &descP->writersQ, pid);
+}
+
+
+
+/* *** reader search for pid ***
+ *
+ * Search for a pid in the reader queue.
+ */
+static
+BOOLEAN_T reader_search4pid(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ErlNifPid* pid)
+{
+ return qsearch4pid(env, &descP->readersQ, pid);
+}
+
+
+/* *** reader push ***
+ *
+ * Push an reader onto the raeder queue.
+ * This happens when we already have atleast one current reader.
+ */
+static
+ERL_NIF_TERM reader_push(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ErlNifPid pid,
+ ERL_NIF_TERM ref)
+{
+ SocketRequestQueueElement* e = MALLOC(sizeof(SocketRequestQueueElement));
+ SocketRequestor* reqP = &e->data;
+
+ reqP->pid = pid;
+ reqP->ref = enif_make_copy(descP->env, ref);
+
+ if (MONP("reader_push -> reader request",
+ env, descP, &pid, &reqP->mon) != 0) {
+ FREE(reqP);
+ return esock_make_error(env, atom_exmon);
+ }
+
+ qpush(&descP->readersQ, e);
+
+ // THIS IS OK => MAKES THE CALLER WAIT FOR ITS TURN
+ return esock_make_error(env, esock_atom_eagain);
+}
+
+
+/* *** reader pop ***
+ *
+ * Pop an writer from the reader queue.
+ */
+static
+BOOLEAN_T reader_pop(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ErlNifPid* pid,
+ // ErlNifMonitor* mon,
+ ESockMonitor* mon,
+ ERL_NIF_TERM* ref)
+{
+ SocketRequestQueueElement* e = qpop(&descP->readersQ);
+
+ if (e != NULL) {
+ *pid = e->data.pid;
+ *mon = e->data.mon;
+ *ref = e->data.ref; // At this point the ref has already been copied (env)
+ FREE(e);
+ return TRUE;
+ } else {
+ /* (readers) Queue was empty */
+ // *pid = NULL; we have no null value for pids
+ // *mon = NULL; we have no null value for monitors
+ *ref = esock_atom_undefined; // Just in case
+ return FALSE;
+ }
+
+}
+
+
+/* *** reader unqueue ***
+ *
+ * Remove an reader from the reader queue.
+ */
+static
+BOOLEAN_T reader_unqueue(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ const ErlNifPid* pid)
+{
+ return qunqueue(env, descP, "qunqueue -> waiting reader",
+ &descP->readersQ, pid);
+}
+
+
+
+
+
+static
+BOOLEAN_T qsearch4pid(ErlNifEnv* env,
+ SocketRequestQueue* q,
+ ErlNifPid* pid)
+{
+ SocketRequestQueueElement* tmp = q->first;
+
+ while (tmp != NULL) {
+ if (compare_pids(env, &tmp->data.pid, pid))
+ return TRUE;
+ else
+ tmp = tmp->nextP;
+ }
+
+ return FALSE;
+}
+
+
+static
+void qpush(SocketRequestQueue* q,
+ SocketRequestQueueElement* e)
+{
+ if (q->first != NULL) {
+ q->last->nextP = e;
+ q->last = e;
+ e->nextP = NULL;
+ } else {
+ q->first = e;
+ q->last = e;
+ e->nextP = NULL;
+ }
+}
+
+
+static
+SocketRequestQueueElement* qpop(SocketRequestQueue* q)
+{
+ SocketRequestQueueElement* e = q->first;
+
+ if (e != NULL) {
+ /* Atleast one element in the queue */
+ if (e == q->last) {
+ /* Only one element in the queue */
+ q->first = q->last = NULL;
+ } else {
+ /* More than one element in the queue */
+ q->first = e->nextP;
+ }
+ }
+
+ return e;
+}
+
+
+
+static
+BOOLEAN_T qunqueue(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ const char* slogan,
+ SocketRequestQueue* q,
+ const ErlNifPid* pid)
+{
+ SocketRequestQueueElement* e = q->first;
+ SocketRequestQueueElement* p = NULL;
+
+ /* Check if it was one of the waiting acceptor processes */
+ while (e != NULL) {
+ if (compare_pids(env, &e->data.pid, pid)) {
+
+ /* We have a match */
+
+ DEMONP(slogan, env, descP, &e->data.mon);
+
+ if (p != NULL) {
+ /* Not the first, but could be the last */
+ if (q->last == e) {
+ q->last = p;
+ p->nextP = NULL;
+ } else {
+ p->nextP = e->nextP;
+ }
+
+ } else {
+ /* The first and could also be the last */
+ if (q->last == e) {
+ q->last = NULL;
+ q->first = NULL;
+ } else {
+ q->first = e->nextP;
+ }
+ }
+
+ FREE(e);
+
+ return TRUE;
+ }
+
+ /* Try next */
+ p = e;
+ e = e->nextP;
+ }
+
+ return FALSE;
+}
+#endif // if !defined(__WIN32__)
+
+
+
+/* ----------------------------------------------------------------------
+ * C o u n t e r F u n c t i o n s
+ * ----------------------------------------------------------------------
+ */
+
+#if !defined(__WIN32__)
+static
+BOOLEAN_T cnt_inc(Uint32* cnt, Uint32 inc)
+{
+ BOOLEAN_T wrap;
+ Uint32 max = 0xFFFFFFFF;
+ Uint32 current = *cnt;
+
+ if ((max - inc) >= current) {
+ *cnt += inc;
+ wrap = FALSE;
+ } else {
+ *cnt = inc - (max - current) - 1;
+ wrap = TRUE;
+ }
+
+ return (wrap);
+}
+
+
+static
+void cnt_dec(Uint32* cnt, Uint32 dec)
+{
+ Uint32 current = *cnt;
+
+ if (dec > current)
+ *cnt = 0; // The counter cannot be < 0 so this is the best we can do...
+ else
+ *cnt -= dec;
+
+ return;
+}
+#endif // if !defined(__WIN32__)
+
+
+
+
+/* ----------------------------------------------------------------------
+ * M o n i t o r W r a p p e r F u n c t i o n s
+ * ----------------------------------------------------------------------
+ */
+
+#if !defined(__WIN32__)
+
+static
+ERL_NIF_TERM my_make_monitor_term(ErlNifEnv* env, const ErlNifMonitor* mon)
+{
+ return ((ERL_NIF_TERM)&mon->data) + 2;
+}
+
+static
+int esock_monitor(const char* slogan,
+ ErlNifEnv* env,
+ SocketDescriptor* descP,
+ const ErlNifPid* pid,
+ ESockMonitor* monP)
+{
+ int res;
+
+ SSDBG( descP, ("SOCKET", "[%d] %s: try monitor\r\n", descP->sock, slogan) );
+ res = enif_monitor_process(env, descP, pid, &monP->mon);
+
+ if (res != 0) {
+ monP->is_active = 0;
+ SSDBG( descP, ("SOCKET", "[%d] monitor failed: %d\r\n", descP->sock, res) );
+ } else {
+ monP->is_active = 1;
+ }
+
+ return res;
+}
+
+
+static
+int esock_demonitor(const char* slogan,
+ ErlNifEnv* env,
+ SocketDescriptor* descP,
+ ESockMonitor* monP)
+{
+ int res;
+
+ if (!monP->is_active)
+ return 1;
+
+ SSDBG( descP, ("SOCKET", "[%d] %s: try demonitor\r\n", descP->sock, slogan) );
+
+ res = enif_demonitor_process(env, descP, &monP->mon);
+
+ if (res == 0) {
+ esock_monitor_init(monP);
+ } else {
+ SSDBG( descP,
+ ("SOCKET", "[%d] demonitor failed: %d\r\n", descP->sock, res) );
+ }
+
+ return res;
+}
+
+
+static
+void esock_monitor_init(ESockMonitor* monP)
+{
+ monP->is_active = 0;
+}
+
+#endif // if !defined(__WIN32__)
+
+
+/*
+static
+int esock_monitor_compare(const ErlNifMonitor* mon1,
+ const ESockMonitor* mon2)
+{
+ return enif_compare_monitors(mon1, &mon2->mon);
+}
+*/
+
+
+/* ----------------------------------------------------------------------
+ * C a l l b a c k F u n c t i o n s
+ * ----------------------------------------------------------------------
+ */
+
+/* =========================================================================
+ * socket_dtor - Callback function for resource destructor
+ *
+ */
+static
+void socket_dtor(ErlNifEnv* env, void* obj)
+{
+#if !defined(__WIN32__)
+ SocketDescriptor* descP = (SocketDescriptor*) obj;
+
+ enif_clear_env(descP->env);
+ enif_free_env(descP->env);
+ descP->env = NULL;
+
+ MDESTROY(descP->writeMtx);
+ MDESTROY(descP->readMtx);
+ MDESTROY(descP->accMtx);
+ MDESTROY(descP->closeMtx);
+#endif
+}
+
+
+/* =========================================================================
+ * socket_stop - Callback function for resource stop
+ *
+ * When the socket is stopped, we need to inform:
+ *
+ * * the controlling process
+ * * the current writer and any waiting writers
+ * * the current reader and any waiting readers
+ * * the current acceptor and any waiting acceptor
+ *
+ * Also, make sure no process gets the message twice
+ * (in case it is, for instance, both controlling process
+ * and a writer).
+ *
+ */
+static
+void socket_stop(ErlNifEnv* env, void* obj, int fd, int is_direct_call)
+{
+#if !defined(__WIN32__)
+ SocketDescriptor* descP = (SocketDescriptor*) obj;
+ ERL_NIF_TERM sockRef;
+
+ SSDBG( descP,
+ ("SOCKET", "socket_stop -> entry when %s"
+ "\r\n sock: %d (%d)"
+ "\r\n",
+ ((is_direct_call) ? "called" : "scheduled"), descP->sock, fd) );
+
+ /* +++ Lock it down +++ */
+
+ MLOCK(descP->writeMtx);
+ MLOCK(descP->readMtx);
+ MLOCK(descP->accMtx);
+ if (!is_direct_call) MLOCK(descP->closeMtx);
+
+ SSDBG( descP, ("SOCKET", "socket_stop -> "
+ "[%d, %T] all mutex(s) locked when counters:"
+ "\r\n writePkgCnt: %u"
+ "\r\n writeByteCnt: %u"
+ "\r\n writeTries: %u"
+ "\r\n writeWaits: %u"
+ "\r\n writeFails: %u"
+ "\r\n readPkgCnt: %u"
+ "\r\n readByteCnt: %u"
+ "\r\n readTries: %u"
+ "\r\n readWaits: %u"
+ "\r\n",
+ descP->sock, descP->ctrlPid,
+ descP->writePkgCnt,
+ descP->writeByteCnt,
+ descP->writeTries,
+ descP->writeWaits,
+ descP->writeFails,
+ descP->readPkgCnt,
+ descP->readByteCnt,
+ descP->readTries,
+ descP->readWaits) );
+
+ sockRef = enif_make_resource(env, descP),
+ descP->state = SOCKET_STATE_CLOSING; // Just in case...???
+ descP->isReadable = FALSE;
+ descP->isWritable = FALSE;
+
+ /* We should check that we actually have a monitor.
+ * This *should* be done with a "NULL" monitor value,
+ * which there currently is none...
+ * If we got here because the controlling process died,
+ * there is no point to demonitor. Also, we do not actually
+ * have a monitor in that case...
+ */
+ DEMONP("socket_stop -> ctrl", env, descP, &descP->ctrlMon);
+
+
+
+ /* +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+ *
+ * Check current and waiting Writers
+ *
+ * +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+ */
+
+ if (descP->currentWriterP != NULL) {
+ /* We have a (current) writer and *may* therefor also have
+ * writers waiting.
+ */
+
+ DEMONP("socket_stop -> current writer",
+ env, descP, &descP->currentWriter.mon);
+
+ SSDBG( descP, ("SOCKET", "socket_stop -> handle current writer\r\n") );
+ if (!compare_pids(env,
+ &descP->closerPid,
+ &descP->currentWriter.pid)) {
+ SSDBG( descP, ("SOCKET", "socket_stop -> "
+ "send abort message to current writer %T\r\n",
+ descP->currentWriter.pid) );
+ if (esock_send_abort_msg(env,
+ sockRef,
+ descP->currentWriter.ref,
+ atom_closed,
+ &descP->currentWriter.pid) != NULL) {
+ /* Shall we really do this?
+ * This happens if the controlling process has been killed!
+ */
+ esock_warning_msg("Failed sending abort (%T) message to "
+ "current writer %T\r\n",
+ descP->currentWriter.ref,
+ descP->currentWriter.pid);
+ }
+ }
+
+ /* And also deal with the waiting writers (in the same way) */
+ SSDBG( descP, ("SOCKET", "socket_stop -> handle waiting writer(s)\r\n") );
+ inform_waiting_procs(env, descP, &descP->writersQ, TRUE, atom_closed);
+ }
+
+
+ /* +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+ *
+ * Check current and waiting Readers
+ *
+ * +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+ */
+
+ if (descP->currentReaderP != NULL) {
+
+ /* We have a (current) reader and *may* therefor also have
+ * readers waiting.
+ */
+
+ DEMONP("socket_stop -> current reader",
+ env, descP, &descP->currentReader.mon);
+
+ SSDBG( descP, ("SOCKET", "socket_stop -> handle current reader\r\n") );
+ if (!compare_pids(env,
+ &descP->closerPid,
+ &descP->currentReader.pid)) {
+ SSDBG( descP, ("SOCKET", "socket_stop -> "
+ "send abort message to current reader %T\r\n",
+ descP->currentReader.pid) );
+ if (esock_send_abort_msg(env,
+ sockRef,
+ descP->currentReader.ref,
+ atom_closed,
+ &descP->currentReader.pid) != NULL) {
+ /* Shall we really do this?
+ * This happens if the controlling process has been killed!
+ */
+ esock_warning_msg("Failed sending abort (%T) message to "
+ "current reader %T\r\n",
+ descP->currentReader.ref,
+ descP->currentReader.pid);
+ }
+ }
+
+ /* And also deal with the waiting readers (in the same way) */
+ SSDBG( descP, ("SOCKET", "socket_stop -> handle waiting reader(s)\r\n") );
+ inform_waiting_procs(env, descP, &descP->readersQ, TRUE, atom_closed);
+ }
+
+
+
+ /* +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+ *
+ * Check current and waiting Acceptors
+ *
+ * +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+ */
+
+ if (descP->currentAcceptorP != NULL) {
+ /* We have a (current) acceptor and *may* therefor also have
+ * acceptors waiting.
+ */
+
+ DEMONP("socket_stop -> current acceptor",
+ env, descP, &descP->currentAcceptor.mon);
+
+ SSDBG( descP, ("SOCKET", "socket_stop -> handle current acceptor\r\n") );
+ if (!compare_pids(env,
+ &descP->closerPid,
+ &descP->currentAcceptor.pid)) {
+ SSDBG( descP, ("SOCKET", "socket_stop -> "
+ "send abort message to current acceptor %T\r\n",
+ descP->currentWriter.pid) );
+ if (esock_send_abort_msg(env,
+ sockRef,
+ descP->currentAcceptor.ref,
+ atom_closed,
+ &descP->currentAcceptor.pid) != NULL) {
+ /* Shall we really do this?
+ * This happens if the controlling process has been killed!
+ */
+ esock_warning_msg("Failed sending abort (%T) message to "
+ "current acceptor %T\r\n",
+ descP->currentAcceptor.ref,
+ descP->currentAcceptor.pid);
+ }
+ }
+
+ /* And also deal with the waiting acceptors (in the same way) */
+ SSDBG( descP, ("SOCKET", "socket_stop -> handle waiting acceptor(s)\r\n") );
+ inform_waiting_procs(env, descP, &descP->acceptorsQ, TRUE, atom_closed);
+ }
+
+
+
+ /* +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+ *
+ * Maybe inform waiting closer
+ *
+ * +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+ */
+
+ if (descP->sock != INVALID_SOCKET) {
+
+ if (descP->closeLocal) {
+ if (!is_direct_call) {
+
+ /* +++ send close message to the waiting process +++ */
+
+ esock_send_close_msg(env, descP);
+
+ DEMONP("socket_stop -> closer", env, descP, &descP->closerMon);
+
+ } else {
+
+ /* We only need to explicitly free the environment here
+ * since the message send takes care of it if scheduled.
+ */
+
+ if (descP->closeEnv != NULL) enif_free_env(descP->closeEnv);
+
+ }
+ }
+ }
+
+
+ SSDBG( descP, ("SOCKET", "socket_stop -> unlock all mutex(s)\r\n") );
+
+ if (!is_direct_call) MUNLOCK(descP->closeMtx);
+ MUNLOCK(descP->accMtx);
+ MUNLOCK(descP->readMtx);
+ MUNLOCK(descP->writeMtx);
+
+ SSDBG( descP,
+ ("SOCKET", "socket_stop -> done (%d, %d)\r\n", descP->sock, fd) );
+
+#endif // if !defined(__WIN32__)
+}
+
+
+
+/* This function traverse the queue and sends the specified
+ * nif_abort message with the specified reason to each member,
+ * and if the 'free' argument is TRUE, the queue will be emptied.
+ */
+#if !defined(__WIN32__)
+static
+void inform_waiting_procs(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ SocketRequestQueue* q,
+ BOOLEAN_T free,
+ ERL_NIF_TERM reason)
+{
+ SocketRequestQueueElement* currentP = q->first;
+ SocketRequestQueueElement* nextP;
+
+ while (currentP != NULL) {
+
+ /* <KOLLA>
+ *
+ * Should we inform anyone if we fail to demonitor?
+ * NOT SURE WHAT THAT WOULD REPRESENT AND IT IS NOT
+ * IMPORTANT IN *THIS* CASE, BUT ITS A FUNDAMENTAL OP...
+ *
+ * </KOLLA>
+ */
+
+ SSDBG( descP,
+ ("SOCKET", "inform_waiting_procs -> abort request %T (from %T)\r\n",
+ currentP->data.ref, currentP->data.pid) );
+
+ ESOCK_ASSERT( (NULL == esock_send_abort_msg(env,
+ esock_atom_undefined,
+ currentP->data.ref,
+ reason,
+ &currentP->data.pid)) );
+
+ DEMONP("inform_waiting_procs -> current 'request'",
+ env, descP, &currentP->data.mon);
+ nextP = currentP->nextP;
+ if (free) FREE(currentP);
+ currentP = nextP;
+ }
+
+ if (free) {
+ q->first = NULL;
+ q->last = NULL;
+ }
+}
+#endif // if !defined(__WIN32__)
+
+
+/* =========================================================================
+ * socket_down - Callback function for resource down (monitored processes)
+ *
+ */
+static
+void socket_down(ErlNifEnv* env,
+ void* obj,
+ const ErlNifPid* pid,
+ const ErlNifMonitor* mon)
+{
+#if !defined(__WIN32__)
+ SocketDescriptor* descP = (SocketDescriptor*) obj;
+ int sres;
+
+ SSDBG( descP, ("SOCKET", "socket_down -> entry with"
+ "\r\n sock: %d"
+ "\r\n pid: %T"
+ "\r\n Close: %s (%s)"
+ "\r\n",
+ descP->sock, *pid,
+ B2S(IS_CLOSED(descP)),
+ B2S(IS_CLOSING(descP))) );
+
+ if (!IS_CLOSED(descP)) {
+
+ if (compare_pids(env, &descP->ctrlPid, pid)) {
+
+ /* We don't bother with the queue cleanup here -
+ * we leave it to the stop callback function.
+ */
+
+ SSDBG( descP,
+ ("SOCKET", "socket_down -> controlling process exit\r\n") );
+
+ descP->state = SOCKET_STATE_CLOSING;
+ descP->closeLocal = TRUE;
+ descP->closerPid = *pid;
+ MON_INIT(&descP->closerMon);
+
+ sres = esock_select_stop(env, descP->sock, descP);
+
+ if (sres & ERL_NIF_SELECT_STOP_CALLED) {
+
+ /* We are done - we can finalize (socket close) directly */
+ SSDBG( descP,
+ ("SOCKET",
+ "socket_down -> [%d] stop called\r\n", descP->sock) );
+
+ dec_socket(descP->domain, descP->type, descP->protocol);
+ descP->state = SOCKET_STATE_CLOSED;
+
+ /* And finally close the socket.
+ * Since we close the socket because of an exiting owner,
+ * we do not need to wait for buffers to sync (linger).
+ * If the owner wish to ensure the buffer are written,
+ * it should have closed the socket explicitly...
+ */
+ if (sock_close(descP->sock) != 0) {
+ int save_errno = sock_errno();
+
+ esock_warning_msg("Failed closing socket for terminating "
+ "controlling process: "
+ "\r\n Controlling Process: %T"
+ "\r\n Descriptor: %d"
+ "\r\n Errno: %d"
+ "\r\n", pid, descP->sock, save_errno);
+ }
+ sock_close_event(descP->event);
+
+ descP->sock = INVALID_SOCKET;
+ descP->event = INVALID_EVENT;
+
+ descP->state = SOCKET_STATE_CLOSED;
+
+ } else if (sres & ERL_NIF_SELECT_STOP_SCHEDULED) {
+
+ /* The stop callback function has been *scheduled* which means
+ * that "should" wait for it to complete. But since we are in
+ * a callback (down) function, we cannot...
+ * So, we must close the socket
+ */
+ SSDBG( descP,
+ ("SOCKET",
+ "socket_down -> [%d] stop scheduled\r\n",
+ descP->sock) );
+
+ dec_socket(descP->domain, descP->type, descP->protocol);
+
+ /* And now what? We can't wait for the stop function here...
+ * So, we simply close it here and leave the rest of the "close"
+ * for later (when the stop function actually gets called...
+ */
+
+ if (sock_close(descP->sock) != 0) {
+ int save_errno = sock_errno();
+
+ esock_warning_msg("Failed closing socket for terminating "
+ "controlling process: "
+ "\r\n Controlling Process: %T"
+ "\r\n Descriptor: %d"
+ "\r\n Errno: %d"
+ "\r\n", pid, descP->sock, save_errno);
+ }
+ sock_close_event(descP->event);
+
+ } else {
+
+ esock_warning_msg("Failed selecting stop when handling down "
+ "of controlling process: "
+ "\r\n Select Res: %d"
+ "\r\n Controlling Process: %T"
+ "\r\n Descriptor: %d"
+ "\r\n Monitor: %T"
+ "\r\n", sres, pid, descP->sock,
+ my_make_monitor_term(env, mon));
+ }
+
+ } else {
+
+ /* check all operation queue(s): acceptor, writer and reader.
+ *
+ * Is it really any point in doing this if the socket is closed?
+ *
+ */
+
+ SSDBG( descP, ("SOCKET", "socket_down -> other process term\r\n") );
+
+ MLOCK(descP->accMtx);
+ if (descP->currentAcceptorP != NULL)
+ socket_down_acceptor(env, descP, pid);
+ MUNLOCK(descP->accMtx);
+
+ MLOCK(descP->writeMtx);
+ if (descP->currentWriterP != NULL)
+ socket_down_writer(env, descP, pid);
+ MUNLOCK(descP->writeMtx);
+
+ MLOCK(descP->readMtx);
+ if (descP->currentReaderP != NULL)
+ socket_down_reader(env, descP, pid);
+ MUNLOCK(descP->readMtx);
+
+ }
+ }
+
+ SSDBG( descP, ("SOCKET", "socket_down -> done\r\n") );
+
+#endif // if !defined(__WIN32__)
+}
+
+
+
+/* *** socket_down_acceptor ***
+ *
+ * Check and then handle a downed acceptor process.
+ *
+ */
+#if !defined(__WIN32__)
+static
+void socket_down_acceptor(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ const ErlNifPid* pid)
+{
+ if (compare_pids(env, &descP->currentAcceptor.pid, pid)) {
+
+ SSDBG( descP, ("SOCKET",
+ "socket_down_acceptor -> "
+ "current acceptor - try pop the queue\r\n") );
+
+ if (acceptor_pop(env, descP,
+ &descP->currentAcceptor.pid,
+ &descP->currentAcceptor.mon,
+ &descP->currentAcceptor.ref)) {
+ int res;
+
+ /* There was another one, so we will still be in accepting state */
+
+ SSDBG( descP, ("SOCKET",
+ "socket_down_acceptor -> new (active) acceptor: "
+ "\r\n pid: %T"
+ "\r\n ref: %T"
+ "\r\n",
+ descP->currentAcceptor.pid,
+ descP->currentAcceptor.ref) );
+
+ if ((res = esock_select_read(env, descP->sock, descP,
+ &descP->currentAcceptor.pid,
+ descP->currentAcceptor.ref) < 0)) {
+
+ esock_warning_msg("Failed select (%d) for new acceptor "
+ "after current (%T) died\r\n",
+ res, *pid);
+
+ }
+
+ } else {
+
+ SSDBG( descP, ("SOCKET",
+ "socket_down_acceptor -> no active acceptor\r\n") );
+
+ descP->currentAcceptorP = NULL;
+ descP->state = SOCKET_STATE_LISTENING;
+ }
+
+ } else {
+
+ /* Maybe unqueue one of the waiting acceptors */
+
+ SSDBG( descP, ("SOCKET",
+ "socket_down_acceptor -> "
+ "not current acceptor - maybe a waiting acceptor\r\n") );
+
+ acceptor_unqueue(env, descP, pid);
+ }
+}
+
+
+
+
+/* *** socket_down_writer ***
+ *
+ * Check and then handle a downed writer process.
+ *
+ */
+static
+void socket_down_writer(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ const ErlNifPid* pid)
+{
+ if (compare_pids(env, &descP->currentWriter.pid, pid)) {
+
+ SSDBG( descP, ("SOCKET",
+ "socket_down_writer -> "
+ "current writer - try pop the queue\r\n") );
+
+ if (writer_pop(env, descP,
+ &descP->currentWriter.pid,
+ &descP->currentWriter.mon,
+ &descP->currentWriter.ref)) {
+ int res;
+
+ /* There was another one */
+
+ SSDBG( descP, ("SOCKET", "socket_down_writer -> new (current) writer: "
+ "\r\n pid: %T"
+ "\r\n ref: %T"
+ "\r\n",
+ descP->currentWriter.pid,
+ descP->currentWriter.ref) );
+
+ if ((res = esock_select_write(env, descP->sock, descP,
+ &descP->currentWriter.pid,
+ descP->currentWriter.ref) < 0)) {
+
+ esock_warning_msg("Failed select (%d) for new writer "
+ "after current (%T) died\r\n",
+ res, *pid);
+
+ }
+
+ } else {
+
+ SSDBG( descP, ("SOCKET",
+ "socket_down_writer -> no active writer\r\n") );
+
+ descP->currentWriterP = NULL;
+ }
+
+ } else {
+
+ /* Maybe unqueue one of the waiting writer(s) */
+
+ SSDBG( descP, ("SOCKET",
+ "socket_down_writer -> "
+ "not current writer - maybe a waiting writer\r\n") );
+
+ writer_unqueue(env, descP, pid);
+ }
+}
+
+
+
+
+/* *** socket_down_reader ***
+ *
+ * Check and then handle a downed reader process.
+ *
+ */
+static
+void socket_down_reader(ErlNifEnv* env,
+ SocketDescriptor* descP,
+ const ErlNifPid* pid)
+{
+ if (compare_pids(env, &descP->currentReader.pid, pid)) {
+
+ SSDBG( descP, ("SOCKET",
+ "socket_down_reader -> "
+ "current reader - try pop the queue\r\n") );
+
+ if (reader_pop(env, descP,
+ &descP->currentReader.pid,
+ &descP->currentReader.mon,
+ &descP->currentReader.ref)) {
+ int res;
+
+ /* There was another one */
+
+ SSDBG( descP, ("SOCKET", "socket_down_reader -> new (current) reader: "
+ "\r\n pid: %T"
+ "\r\n ref: %T"
+ "\r\n",
+ descP->currentReader.pid,
+ descP->currentReader.ref) );
+
+ if ((res = esock_select_read(env, descP->sock, descP,
+ &descP->currentReader.pid,
+ descP->currentReader.ref) < 0)) {
+
+ esock_warning_msg("Failed select (%d) for new reader "
+ "after current (%T) died\r\n",
+ res, *pid);
+
+ }
+
+ } else {
+
+ SSDBG( descP, ("SOCKET",
+ "socket_down_reader -> no active reader\r\n") );
+
+ descP->currentReaderP = NULL;
+ }
+
+ } else {
+
+ /* Maybe unqueue one of the waiting reader(s) */
+
+ SSDBG( descP, ("SOCKET",
+ "socket_down_reader -> "
+ "not current reader - maybe a waiting reader\r\n") );
+
+ reader_unqueue(env, descP, pid);
+ }
+}
+#endif // if !defined(__WIN32__)
+
+
+
+/* ----------------------------------------------------------------------
+ * L o a d / u n l o a d / u p g r a d e F u n c t i o n s
+ * ----------------------------------------------------------------------
+ */
+
+static
+ErlNifFunc socket_funcs[] =
+{
+ // Some utility and support functions
+ {"nif_info", 0, nif_info, 0},
+ {"nif_supports", 1, nif_supports, 0},
+ // {"nif_debug", 1, nif_debug, 0},
+ // {"nif_command", 1, nif_command, 0},
+
+ // The proper "socket" interface
+ // nif_open/1 is used when we already have a file descriptor
+ // {"nif_open", 1, nif_open, 0},
+ {"nif_open", 4, nif_open, 0},
+ {"nif_bind", 2, nif_bind, 0},
+ {"nif_connect", 2, nif_connect, 0},
+ {"nif_listen", 2, nif_listen, 0},
+ {"nif_accept", 2, nif_accept, 0},
+ {"nif_send", 4, nif_send, 0},
+ {"nif_sendto", 5, nif_sendto, 0},
+ {"nif_sendmsg", 4, nif_sendmsg, 0},
+ {"nif_recv", 4, nif_recv, 0},
+ {"nif_recvfrom", 4, nif_recvfrom, 0},
+ {"nif_recvmsg", 5, nif_recvmsg, 0},
+ {"nif_close", 1, nif_close, 0},
+ {"nif_shutdown", 2, nif_shutdown, 0},
+ {"nif_setopt", 5, nif_setopt, 0},
+ {"nif_getopt", 4, nif_getopt, 0},
+ {"nif_sockname", 1, nif_sockname, 0},
+ {"nif_peername", 1, nif_peername, 0},
+
+ /* Misc utility functions */
+
+ /* "Extra" functions to "complete" the socket interface.
+ * For instance, the function nif_finalize_connection
+ * is called after the connect *select* has "completed".
+ */
+ {"nif_finalize_connection", 1, nif_finalize_connection, 0},
+ {"nif_cancel", 3, nif_cancel, 0},
+ {"nif_finalize_close", 1, nif_finalize_close, ERL_NIF_DIRTY_JOB_IO_BOUND}
+};
+
+
+#if !defined(__WIN32__)
+static
+BOOLEAN_T extract_debug(ErlNifEnv* env,
+ ERL_NIF_TERM map)
+{
+ /*
+ * We need to do this here since the "proper" atom has not been
+ * created when this function is called.
+ */
+ ERL_NIF_TERM debug = MKA(env, "debug");
+
+ return esock_extract_bool_from_map(env, map, debug, SOCKET_GLOBAL_DEBUG_DEFAULT);
+}
+
+static
+BOOLEAN_T extract_iow(ErlNifEnv* env,
+ ERL_NIF_TERM map)
+{
+ /*
+ * We need to do this here since the "proper" atom has not been
+ * created when this function is called.
+ */
+ ERL_NIF_TERM iow = MKA(env, "iow");
+
+ return esock_extract_bool_from_map(env, map, iow, SOCKET_NIF_IOW_DEFAULT);
+}
+#endif // if !defined(__WIN32__)
+
+
+
+/* =======================================================================
+ * load_info - A map of misc info (e.g global debug)
+ */
+
+static
+int on_load(ErlNifEnv* env, void** priv_data, ERL_NIF_TERM load_info)
+{
+#if !defined(__WIN32__)
+ esock_dbg_init(ESOCK_DBGOUT_DEFAULT);
+ // esock_dbg_init(ESOCK_DBGOUT_UNIQUE);
+
+ data.dbg = extract_debug(env, load_info);
+ data.iow = extract_iow(env, load_info);
+
+ /* +++ Global Counters +++ */
+ data.cntMtx = MCREATE("socket[gcnt]");
+ data.numSockets = 0;
+ data.numTypeDGrams = 0;
+ data.numTypeStreams = 0;
+ data.numTypeSeqPkgs = 0;
+ data.numDomainLocal = 0;
+ data.numDomainInet = 0;
+ data.numDomainInet6 = 0;
+ data.numProtoIP = 0;
+ data.numProtoTCP = 0;
+ data.numProtoUDP = 0;
+ data.numProtoSCTP = 0;
+#endif
+
+ /* +++ Misc atoms +++ */
+ atom_adaptation_layer = MKA(env, str_adaptation_layer);
+ atom_address = MKA(env, str_address);
+ atom_association = MKA(env, str_association);
+ atom_assoc_id = MKA(env, str_assoc_id);
+ atom_authentication = MKA(env, str_authentication);
+ atom_bool = MKA(env, str_bool);
+ atom_close = MKA(env, str_close);
+ atom_closed = MKA(env, str_closed);
+ atom_closing = MKA(env, str_closing);
+ atom_cookie_life = MKA(env, str_cookie_life);
+ atom_data_in = MKA(env, str_data_in);
+ atom_do = MKA(env, str_do);
+ atom_dont = MKA(env, str_dont);
+ atom_exclude = MKA(env, str_exclude);
+ atom_false = MKA(env, str_false);
+ atom_global_counters = MKA(env, str_global_counters);
+ atom_in4_sockaddr = MKA(env, str_in4_sockaddr);
+ atom_in6_sockaddr = MKA(env, str_in6_sockaddr);
+ atom_include = MKA(env, str_include);
+ atom_initial = MKA(env, str_initial);
+ atom_int = MKA(env, str_int);
+ atom_interface = MKA(env, str_interface);
+ atom_iow = MKA(env, str_iow);
+ atom_local_rwnd = MKA(env, str_local_rwnd);
+ atom_max = MKA(env, str_max);
+ atom_max_attempts = MKA(env, str_max_attempts);
+ atom_max_init_timeo = MKA(env, str_max_init_timeo);
+ atom_max_instreams = MKA(env, str_max_instreams);
+ atom_max_rxt = MKA(env, str_max_rxt);
+ atom_min = MKA(env, str_min);
+ atom_mode = MKA(env, str_mode);
+ atom_multiaddr = MKA(env, str_multiaddr);
+ // atom_nif_abort = MKA(env, str_nif_abort);
+ atom_null = MKA(env, str_null);
+ atom_num_dinet = MKA(env, str_num_dinet);
+ atom_num_dinet6 = MKA(env, str_num_dinet6);
+ atom_num_dlocal = MKA(env, str_num_dlocal);
+ atom_num_outstreams = MKA(env, str_num_outstreams);
+ atom_num_peer_dests = MKA(env, str_num_peer_dests);
+ atom_num_pip = MKA(env, str_num_pip);
+ atom_num_psctp = MKA(env, str_num_psctp);
+ atom_num_ptcp = MKA(env, str_num_ptcp);
+ atom_num_pudp = MKA(env, str_num_pudp);
+ atom_num_sockets = MKA(env, str_num_sockets);
+ atom_num_tdgrams = MKA(env, str_num_tdgrams);
+ atom_num_tseqpkgs = MKA(env, str_num_tseqpkgs);
+ atom_num_tstreams = MKA(env, str_num_tstreams);
+ atom_partial_delivery = MKA(env, str_partial_delivery);
+ atom_peer_rwnd = MKA(env, str_peer_rwnd);
+ atom_peer_error = MKA(env, str_peer_error);
+ atom_probe = MKA(env, str_probe);
+ atom_select = MKA(env, str_select);
+ atom_sender_dry = MKA(env, str_sender_dry);
+ atom_send_failure = MKA(env, str_send_failure);
+ atom_shutdown = MKA(env, str_shutdown);
+ atom_slist = MKA(env, str_slist);
+ atom_sourceaddr = MKA(env, str_sourceaddr);
+ atom_timeout = MKA(env, str_timeout);
+ atom_true = MKA(env, str_true);
+ atom_want = MKA(env, str_want);
+
+ /* Global atom(s) */
+ esock_atom_abort = MKA(env, "abort");
+ esock_atom_accept = MKA(env, "accept");
+ esock_atom_acceptconn = MKA(env, "acceptconn");
+ esock_atom_acceptfilter = MKA(env, "acceptfilter");
+ esock_atom_adaption_layer = MKA(env, "adaption_layer");
+ esock_atom_addr = MKA(env, "addr");
+ esock_atom_addrform = MKA(env, "addrform");
+ esock_atom_add_membership = MKA(env, "add_membership");
+ esock_atom_add_source_membership = MKA(env, "add_source_membership");
+ esock_atom_any = MKA(env, "any");
+ esock_atom_associnfo = MKA(env, "associnfo");
+ esock_atom_authhdr = MKA(env, "authhdr");
+ esock_atom_auth_active_key = MKA(env, "auth_active_key");
+ esock_atom_auth_asconf = MKA(env, "auth_asconf");
+ esock_atom_auth_chunk = MKA(env, "auth_chunk");
+ esock_atom_auth_delete_key = MKA(env, "auth_delete_key");
+ esock_atom_auth_key = MKA(env, "auth_key");
+ esock_atom_auth_level = MKA(env, "auth_level");
+ esock_atom_autoclose = MKA(env, "autoclose");
+ esock_atom_bindtodevice = MKA(env, "bindtodevice");
+ esock_atom_block_source = MKA(env, "block_source");
+ esock_atom_broadcast = MKA(env, "broadcast");
+ esock_atom_busy_poll = MKA(env, "busy_poll");
+ esock_atom_checksum = MKA(env, "checksum");
+ esock_atom_close = MKA(env, "close");
+ esock_atom_connect = MKA(env, "connect");
+ esock_atom_congestion = MKA(env, "congestion");
+ esock_atom_context = MKA(env, "context");
+ esock_atom_cork = MKA(env, "cork");
+ esock_atom_credentials = MKA(env, "credentials");
+ esock_atom_ctrl = MKA(env, "ctrl");
+ esock_atom_ctrunc = MKA(env, "ctrunc");
+ esock_atom_data = MKA(env, "data");
+ esock_atom_debug = MKA(env, "debug");
+ esock_atom_default_send_params = MKA(env, "default_send_params");
+ esock_atom_delayed_ack_time = MKA(env, "delayed_ack_time");
+ esock_atom_dgram = MKA(env, "dgram");
+ esock_atom_disable_fragments = MKA(env, "disable_fragments");
+ esock_atom_domain = MKA(env, "domain");
+ esock_atom_dontfrag = MKA(env, "dontfrag");
+ esock_atom_dontroute = MKA(env, "dontroute");
+ esock_atom_drop_membership = MKA(env, "drop_membership");
+ esock_atom_drop_source_membership = MKA(env, "drop_source_membership");
+ esock_atom_dstopts = MKA(env, "dstpopts");
+ esock_atom_eor = MKA(env, "eor");
+ esock_atom_error = MKA(env, "error");
+ esock_atom_errqueue = MKA(env, "errqueue");
+ esock_atom_esp_network_level = MKA(env, "esp_network_level");
+ esock_atom_esp_trans_level = MKA(env, "esp_trans_level");
+ esock_atom_events = MKA(env, "events");
+ esock_atom_explicit_eor = MKA(env, "explicit_eor");
+ esock_atom_faith = MKA(env, "faith");
+ esock_atom_false = MKA(env, "false");
+ esock_atom_family = MKA(env, "family");
+ esock_atom_flags = MKA(env, "flags");
+ esock_atom_flowinfo = MKA(env, "flowinfo");
+ esock_atom_fragment_interleave = MKA(env, "fragment_interleave");
+ esock_atom_freebind = MKA(env, "freebind");
+ esock_atom_get_peer_addr_info = MKA(env, "get_peer_addr_info");
+ esock_atom_hdrincl = MKA(env, "hdrincl");
+ esock_atom_hmac_ident = MKA(env, "hmac_ident");
+ esock_atom_hoplimit = MKA(env, "hoplimit");
+ esock_atom_hopopts = MKA(env, "hopopts");
+ esock_atom_ifindex = MKA(env, "ifindex");
+ esock_atom_inet = MKA(env, "inet");
+ esock_atom_inet6 = MKA(env, "inet6");
+ esock_atom_info = MKA(env, "info");
+ esock_atom_initmsg = MKA(env, "initmsg");
+ esock_atom_iov = MKA(env, "iov");
+ esock_atom_ip = MKA(env, "ip");
+ esock_atom_ipcomp_level = MKA(env, "ipcomp_level");
+ esock_atom_ipv6 = MKA(env, "ipv6");
+ esock_atom_i_want_mapped_v4_addr = MKA(env, "i_want_mapped_v4_addr");
+ esock_atom_join_group = MKA(env, "join_group");
+ esock_atom_keepalive = MKA(env, "keepalive");
+ esock_atom_keepcnt = MKA(env, "keepcnt");
+ esock_atom_keepidle = MKA(env, "keepidle");
+ esock_atom_keepintvl = MKA(env, "keepintvl");
+ esock_atom_leave_group = MKA(env, "leave_group");
+ esock_atom_level = MKA(env, "level");
+ esock_atom_linger = MKA(env, "linger");
+ esock_atom_local = MKA(env, "local");
+ esock_atom_local_auth_chunks = MKA(env, "local_auth_chunks");
+ esock_atom_loopback = MKA(env, "loopback");
+ esock_atom_lowdelay = MKA(env, "lowdelay");
+ esock_atom_mark = MKA(env, "mark");
+ esock_atom_maxburst = MKA(env, "maxburst");
+ esock_atom_maxseg = MKA(env, "maxseg");
+ esock_atom_md5sig = MKA(env, "md5sig");
+ esock_atom_mincost = MKA(env, "mincost");
+ esock_atom_minttl = MKA(env, "minttl");
+ esock_atom_msfilter = MKA(env, "msfilter");
+ esock_atom_mtu = MKA(env, "mtu");
+ esock_atom_mtu_discover = MKA(env, "mtu_discover");
+ esock_atom_multicast_all = MKA(env, "multicast_all");
+ esock_atom_multicast_hops = MKA(env, "multicast_hops");
+ esock_atom_multicast_if = MKA(env, "multicast_if");
+ esock_atom_multicast_loop = MKA(env, "multicast_loop");
+ esock_atom_multicast_ttl = MKA(env, "multicast_ttl");
+ esock_atom_nodefrag = MKA(env, "nodefrag");
+ esock_atom_nodelay = MKA(env, "nodelay");
+ esock_atom_noopt = MKA(env, "noopt");
+ esock_atom_nopush = MKA(env, "nopush");
+ esock_atom_not_found = MKA(env, "not_found");
+ esock_atom_not_owner = MKA(env, "not_owner");
+ esock_atom_ok = MKA(env, "ok");
+ esock_atom_oob = MKA(env, "oob");
+ esock_atom_oobinline = MKA(env, "oobinline");
+ esock_atom_options = MKA(env, "options");
+ esock_atom_origdstaddr = MKA(env, "origdstaddr");
+ esock_atom_partial_delivery_point = MKA(env, "partial_delivery_point");
+ esock_atom_passcred = MKA(env, "passcred");
+ esock_atom_path = MKA(env, "path");
+ esock_atom_peekcred = MKA(env, "peekcred");
+ esock_atom_peek_off = MKA(env, "peek_off");
+ esock_atom_peer_addr_params = MKA(env, "peer_addr_params");
+ esock_atom_peer_auth_chunks = MKA(env, "peer_auth_chunks");
+ esock_atom_pktinfo = MKA(env, "pktinfo");
+ esock_atom_pktoptions = MKA(env, "pktoptions");
+ esock_atom_port = MKA(env, "port");
+ esock_atom_portrange = MKA(env, "portrange");
+ esock_atom_primary_addr = MKA(env, "primary_addr");
+ esock_atom_priority = MKA(env, "priority");
+ esock_atom_protocol = MKA(env, "protocol");
+ esock_atom_raw = MKA(env, "raw");
+ esock_atom_rcvbuf = MKA(env, "rcvbuf");
+ esock_atom_rcvbufforce = MKA(env, "rcvbufforce");
+ esock_atom_rcvlowat = MKA(env, "rcvlowat");
+ esock_atom_rcvtimeo = MKA(env, "rcvtimeo");
+ esock_atom_rdm = MKA(env, "rdm");
+ esock_atom_recv = MKA(env, "recv");
+ esock_atom_recvdstaddr = MKA(env, "recvdstaddr");
+ esock_atom_recverr = MKA(env, "recverr");
+ esock_atom_recvfrom = MKA(env, "recvfrom");
+ esock_atom_recvif = MKA(env, "recvif");
+ esock_atom_recvmsg = MKA(env, "recvmsg");
+ esock_atom_recvopts = MKA(env, "recvopts");
+ esock_atom_recvorigdstaddr = MKA(env, "recvorigdstaddr");
+ esock_atom_recvpktinfo = MKA(env, "recvpktinfo");
+ esock_atom_recvtclass = MKA(env, "recvtclass");
+ esock_atom_recvtos = MKA(env, "recvtos");
+ esock_atom_recvttl = MKA(env, "recvttl");
+ esock_atom_reliability = MKA(env, "reliability");
+ esock_atom_reset_streams = MKA(env, "reset_streams");
+ esock_atom_retopts = MKA(env, "retopts");
+ esock_atom_reuseaddr = MKA(env, "reuseaddr");
+ esock_atom_reuseport = MKA(env, "reuseport");
+ esock_atom_rights = MKA(env, "rights");
+ esock_atom_router_alert = MKA(env, "router_alert");
+ esock_atom_rthdr = MKA(env, "rthdr");
+ esock_atom_rtoinfo = MKA(env, "rtoinfo");
+ esock_atom_rxq_ovfl = MKA(env, "rxq_ovfl");
+ esock_atom_scope_id = MKA(env, "scope_id");
+ esock_atom_sctp = MKA(env, "sctp");
+ esock_atom_sec = MKA(env, "sec");
+ esock_atom_select_failed = MKA(env, "select_failed");
+ esock_atom_select_sent = MKA(env, "select_sent");
+ esock_atom_send = MKA(env, "send");
+ esock_atom_sendmsg = MKA(env, "sendmsg");
+ esock_atom_sendsrcaddr = MKA(env, "sendsrcaddr");
+ esock_atom_sendto = MKA(env, "sendto");
+ esock_atom_seqpacket = MKA(env, "seqpacket");
+ esock_atom_setfib = MKA(env, "setfib");
+ esock_atom_set_peer_primary_addr = MKA(env, "set_peer_primary_addr");
+ esock_atom_sndbuf = MKA(env, "sndbuf");
+ esock_atom_sndbufforce = MKA(env, "sndbufforce");
+ esock_atom_sndlowat = MKA(env, "sndlowat");
+ esock_atom_sndtimeo = MKA(env, "sndtimeo");
+ esock_atom_socket = MKA(env, "socket");
+ esock_atom_socket_tag = MKA(env, "$socket");
+ esock_atom_spec_dst = MKA(env, "spec_dst");
+ esock_atom_status = MKA(env, "status");
+ esock_atom_stream = MKA(env, "stream");
+ esock_atom_syncnt = MKA(env, "syncnt");
+ esock_atom_tclass = MKA(env, "tclass");
+ esock_atom_tcp = MKA(env, "tcp");
+ esock_atom_throughput = MKA(env, "throughput");
+ esock_atom_timestamp = MKA(env, "timestamp");
+ esock_atom_tos = MKA(env, "tos");
+ esock_atom_transparent = MKA(env, "transparent");
+ esock_atom_true = MKA(env, "true");
+ esock_atom_trunc = MKA(env, "trunc");
+ esock_atom_ttl = MKA(env, "ttl");
+ esock_atom_type = MKA(env, "type");
+ esock_atom_udp = MKA(env, "udp");
+ esock_atom_unblock_source = MKA(env, "unblock_source");
+ esock_atom_undefined = MKA(env, "undefined");
+ esock_atom_unicast_hops = MKA(env, "unicast_hops");
+ esock_atom_unknown = MKA(env, "unknown");
+ esock_atom_usec = MKA(env, "usec");
+ esock_atom_user_timeout = MKA(env, "user_timeout");
+ esock_atom_use_ext_recvinfo = MKA(env, "use_ext_recvinfo");
+ esock_atom_use_min_mtu = MKA(env, "use_min_mtu");
+ esock_atom_v6only = MKA(env, "v6only");
+
+ /* Global error codes */
+ esock_atom_eafnosupport = MKA(env, ESOCK_STR_EAFNOSUPPORT);
+ esock_atom_eagain = MKA(env, ESOCK_STR_EAGAIN);
+ esock_atom_einval = MKA(env, ESOCK_STR_EINVAL);
+
+ /* Error codes */
+ atom_eisconn = MKA(env, str_eisconn);
+ atom_enotclosing = MKA(env, str_enotclosing);
+ atom_enotconn = MKA(env, str_enotconn);
+ atom_exalloc = MKA(env, str_exalloc);
+ atom_exbadstate = MKA(env, str_exbadstate);
+ atom_exbusy = MKA(env, str_exbusy);
+ atom_exmon = MKA(env, str_exmon);
+ atom_exself = MKA(env, str_exself);
+ atom_exsend = MKA(env, str_exsend);
+
+ // For storing "global" things...
+ // data.env = enif_alloc_env(); // We should really check
+ // data.version = MKA(env, ERTS_VERSION);
+ // data.buildDate = MKA(env, ERTS_BUILD_DATE);
+
+ sockets = enif_open_resource_type_x(env,
+ "sockets",
+ &socketInit,
+ ERL_NIF_RT_CREATE,
+ NULL);
+
+ return !sockets;
+}
+
+ERL_NIF_INIT(socket, socket_funcs, on_load, NULL, NULL, NULL)
diff --git a/erts/emulator/nifs/common/socket_tarray.c b/erts/emulator/nifs/common/socket_tarray.c
new file mode 100644
index 0000000000..def22c4919
--- /dev/null
+++ b/erts/emulator/nifs/common/socket_tarray.c
@@ -0,0 +1,143 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2018-2019. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ *
+ * ----------------------------------------------------------------------
+ * Purpose : Build and "maintain" a (erlang) term array of
+ * variable length.
+ * ----------------------------------------------------------------------
+ *
+ */
+
+/* #ifdef HAVE_CONFIG_H */
+/* #include "config.h" */
+/* #endif */
+
+#include <stdio.h>
+
+#include <erl_nif.h>
+
+#include "socket_int.h"
+#include <sys.h>
+#include "socket_util.h"
+#include "socket_tarray.h"
+
+
+
+/* ----------------------------------------------------------------------
+ * Types
+ */
+
+typedef struct {
+ Uint32 sz;
+ Uint32 idx;
+ ERL_NIF_TERM* array;
+} SocketTArrayInt;
+
+
+/* ----------------------------------------------------------------------
+ * Forward for internal functions
+ */
+
+static void esock_tarray_add1(SocketTArrayInt* taP, ERL_NIF_TERM t);
+static void esock_tarray_ensure_fits(SocketTArrayInt* taP, Uint32 needs);
+
+
+/* ----------------------------------------------------------------------
+ * API
+ */
+
+extern
+void* esock_tarray_create(Uint32 sz)
+{
+ SocketTArrayInt* tarrayP;
+
+ ESOCK_ASSERT( (sz > 0) );
+
+ tarrayP = MALLOC(sizeof(SocketTArrayInt));
+ ESOCK_ASSERT( (tarrayP != NULL) );
+
+ tarrayP->array = MALLOC(sz * sizeof(ERL_NIF_TERM));
+ ESOCK_ASSERT( (tarrayP->array != NULL) );
+ tarrayP->sz = sz;
+ tarrayP->idx = 0;
+
+ return ((SocketTArray) tarrayP);
+}
+
+extern
+void esock_tarray_delete(SocketTArray ta)
+{
+ SocketTArrayInt* taP = (SocketTArrayInt*) ta;
+
+ FREE(taP->array);
+ FREE(taP);
+}
+
+
+extern
+Uint32 esock_tarray_sz(SocketTArray a)
+{
+ return ( ((SocketTArrayInt*) a)->idx );
+}
+
+extern
+void esock_tarray_add(SocketTArray ta, ERL_NIF_TERM t)
+{
+ esock_tarray_add1((SocketTArrayInt*) ta, t);
+}
+
+extern
+void esock_tarray_tolist(SocketTArray ta,
+ ErlNifEnv* env,
+ ERL_NIF_TERM* list)
+{
+ SocketTArrayInt* taP = (SocketTArrayInt*) ta;
+
+ *list = MKLA(env, taP->array, taP->idx);
+
+ esock_tarray_delete(taP);
+}
+
+
+
+/* ----------------------------------------------------------------------
+ * "Internal" functions
+ */
+
+static
+void esock_tarray_add1(SocketTArrayInt* taP, ERL_NIF_TERM t)
+{
+ esock_tarray_ensure_fits(taP, 1);
+
+ taP->array[taP->idx++] = t;
+}
+
+static
+void esock_tarray_ensure_fits(SocketTArrayInt* taP, Uint32 needs)
+{
+ if (taP->sz < (taP->idx + needs)) {
+ Uint32 newSz = (needs < taP->sz) ? 2*taP->sz : 2*needs;
+ void* mem = REALLOC(taP->array, newSz * sizeof(ERL_NIF_TERM));
+
+ ESOCK_ASSERT( (mem != NULL) );
+
+ taP->sz = newSz;
+ taP->array = (ERL_NIF_TERM*) mem;
+ }
+}
diff --git a/erts/emulator/nifs/common/socket_tarray.h b/erts/emulator/nifs/common/socket_tarray.h
new file mode 100644
index 0000000000..4f1152fb9e
--- /dev/null
+++ b/erts/emulator/nifs/common/socket_tarray.h
@@ -0,0 +1,47 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2018-2019. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ *
+ * ----------------------------------------------------------------------
+ * Purpose : Build and "maintain" a (erlang) term array of
+ * variable length.
+ * ----------------------------------------------------------------------
+ *
+ */
+
+#ifndef SOCKET_TARRAY_H__
+#define SOCKET_TARRAY_H__
+
+typedef void* SocketTArray;
+
+extern SocketTArray esock_tarray_create(Uint32 sz);
+extern void esock_tarray_delete(SocketTArray ta);
+extern Uint32 esock_tarray_sz(SocketTArray ta);
+extern void esock_tarray_add(SocketTArray ta, ERL_NIF_TERM t);
+extern void esock_tarray_tolist(SocketTArray ta,
+ ErlNifEnv* env,
+ ERL_NIF_TERM* list);
+
+#define TARRAY_CREATE(SZ) esock_tarray_create((SZ))
+#define TARRAY_DELETE(TA) esock_tarray_delete((TA))
+#define TARRAY_SZ(TA) esock_tarray_sz((TA))
+#define TARRAY_ADD(TA, T) esock_tarray_add((TA), (T))
+#define TARRAY_TOLIST(TA, E, L) esock_tarray_tolist((TA), (E), (L))
+
+
+#endif // SOCKET_TARRAY_H__
diff --git a/erts/emulator/nifs/common/socket_util.c b/erts/emulator/nifs/common/socket_util.c
new file mode 100644
index 0000000000..f6e4781977
--- /dev/null
+++ b/erts/emulator/nifs/common/socket_util.c
@@ -0,0 +1,1658 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2018-2019. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ *
+ * ----------------------------------------------------------------------
+ * Purpose : Utility functions for the socket and net NIF(s).
+ * ----------------------------------------------------------------------
+ *
+ */
+
+#include <stdarg.h>
+#include <string.h>
+#include <stdio.h>
+#include <ctype.h>
+#include <time.h>
+#include <stddef.h>
+
+#include "socket_int.h"
+#include "sys.h"
+#include "socket_util.h"
+#include "socket_dbg.h"
+
+/* We don't have a "debug flag" to check here, so we
+ * should use the compile debug flag, whatever that is...
+ */
+
+// #define COMPILE_DEBUG_FLAG_WE_NEED_TO_CHECK 1
+#if defined(COMPILE_DEBUG_FLAG_WE_NEED_TO_CHECK)
+#define UTIL_DEBUG TRUE
+#else
+#define UTIL_DEBUG FALSE
+#endif
+
+#define UDBG( proto ) ESOCK_DBG_PRINTF( UTIL_DEBUG , proto )
+
+
+extern char* erl_errno_id(int error); /* THIS IS JUST TEMPORARY??? */
+
+static int realtime(struct timespec* tsP);
+static int timespec2str(char *buf, unsigned int len, struct timespec *ts);
+
+static char* make_sockaddr_in4(ErlNifEnv* env,
+ ERL_NIF_TERM port,
+ ERL_NIF_TERM addr,
+ ERL_NIF_TERM* sa);
+static char* make_sockaddr_in6(ErlNifEnv* env,
+ ERL_NIF_TERM port,
+ ERL_NIF_TERM addr,
+ ERL_NIF_TERM flowInfo,
+ ERL_NIF_TERM scopeId,
+ ERL_NIF_TERM* sa);
+static char* make_sockaddr_un(ErlNifEnv* env,
+ ERL_NIF_TERM path,
+ ERL_NIF_TERM* sa);
+
+
+/* +++ esock_encode_iov +++
+ *
+ * Encode an IO Vector. In erlang we represented this as a list of binaries.
+ *
+ * We iterate through the IO vector, and as long as the remaining (rem)
+ * number of bytes is greater than the size of the current buffer, we
+ * contunue. When we have a buffer that is greater than rem, we have found
+ * the last buffer (it may be empty, and then the previous was last).
+ * We may need to split this (if 0 < rem < bufferSz).
+ */
+
+extern
+char* esock_encode_iov(ErlNifEnv* env,
+ int read,
+ struct iovec* iov,
+ size_t len,
+ ErlNifBinary* data,
+ ERL_NIF_TERM* eIOV)
+{
+ int rem = read;
+ Uint16 i;
+ BOOLEAN_T done = FALSE;
+ ERL_NIF_TERM a[len]; // At most this length
+
+ UDBG( ("SUTIL", "esock_encode_iov -> entry with"
+ "\r\n read: %d"
+ "\r\n (IOV) len: %d"
+ "\r\n", read, len) );
+
+ if (len == 0) {
+ *eIOV = MKEL(env);
+ return NULL;
+ }
+
+ for (i = 0; (!done) && (i < len); i++) {
+ UDBG( ("SUTIL", "esock_encode_iov -> process iov:"
+ "\r\n iov[%d].iov_len: %d"
+ "\r\n rem: %d"
+ "\r\n", i, iov[i].iov_len, rem) );
+ if (iov[i].iov_len == rem) {
+ /* We have the exact amount - we are done */
+ UDBG( ("SUTIL", "esock_encode_iov -> exact => done\r\n") );
+ a[i] = MKBIN(env, &data[i]);
+ rem = 0; // Besserwisser
+ done = TRUE;
+ } else if (iov[i].iov_len < rem) {
+ /* Filled another buffer - continue */
+ UDBG( ("SUTIL", "esock_encode_iov -> filled => continue\r\n") );
+ a[i] = MKBIN(env, &data[i]);
+ rem -= iov[i].iov_len;
+ } else if (iov[i].iov_len > rem) {
+ /* Partly filled buffer (=> split) - we are done */
+ ERL_NIF_TERM tmp;
+ UDBG( ("SUTIL", "esock_encode_iov -> split => done\r\n") );
+ tmp = MKBIN(env, &data[i]);
+ a[i] = MKSBIN(env, tmp, 0, rem);
+ rem = 0; // Besserwisser
+ done = TRUE;
+ }
+ }
+
+ UDBG( ("SUTIL", "esock_encode_iov -> create the IOV list (%d)\r\n", i) );
+
+ *eIOV = MKLA(env, a, i);
+
+ UDBG( ("SUTIL", "esock_encode_msghdr -> done\r\n") );
+
+ return NULL;
+}
+
+
+
+/* +++ esock_decode_iov +++
+ *
+ * Decode an IO Vector. In erlang we represented this as a list of binaries.
+ *
+ * We assume that we have already figured out how long the iov (actually
+ * eIOV) is (len), and therefor allocated an array of bins and iov to be
+ * used.
+ */
+
+extern
+char* esock_decode_iov(ErlNifEnv* env,
+ ERL_NIF_TERM eIOV,
+ ErlNifBinary* bufs,
+ struct iovec* iov,
+ size_t len,
+ ssize_t* totSize)
+{
+ Uint16 i;
+ ssize_t sz;
+ ERL_NIF_TERM elem, tail, list;
+
+ UDBG( ("SUTIL", "esock_decode_iov -> entry with"
+ "\r\n (IOV) len: %d"
+ "\r\n", read, len) );
+
+ for (i = 0, list = eIOV, sz = 0; (i < len); i++) {
+
+ UDBG( ("SUTIL", "esock_decode_iov -> "
+ "\r\n iov[%d].iov_len: %d"
+ "\r\n rem: %d"
+ "\r\n", i) );
+
+ if (!GET_LIST_ELEM(env, list, &elem, &tail))
+ return ESOCK_STR_EINVAL;
+
+ if (IS_BIN(env, elem) && GET_BIN(env, elem, &bufs[i])) {
+ iov[i].iov_base = bufs[i].data;
+ iov[i].iov_len = bufs[i].size;
+ sz += bufs[i].size;
+ } else {
+ return ESOCK_STR_EINVAL;
+ }
+
+ list = tail;
+ }
+
+ *totSize = sz;
+
+ UDBG( ("SUTIL", "esock_decode_msghdr -> done (%d)\r\n", sz) );
+
+ return NULL;
+}
+
+
+
+/* +++ esock_decode_sockaddr +++
+ *
+ * Decode a socket address - sockaddr. In erlang its represented as
+ * a map, which has a specific set of attributes, depending on one
+ * mandatory attribute; family. So depending on the value of the family
+ * attribute:
+ *
+ * local - sockaddr_un: path
+ * inet - sockaddr_in4: port, addr
+ * inet6 - sockaddr_in6: port, addr, flowinfo, scope_id
+ */
+
+extern
+char* esock_decode_sockaddr(ErlNifEnv* env,
+ ERL_NIF_TERM eSockAddr,
+ SocketAddress* sockAddrP,
+ unsigned int* addrLen)
+{
+ ERL_NIF_TERM efam;
+ int fam;
+ char* xres;
+
+ UDBG( ("SUTIL", "esock_decode_sockaddr -> entry\r\n") );
+
+ if (!IS_MAP(env, eSockAddr))
+ return ESOCK_STR_EINVAL;
+
+ if (!GET_MAP_VAL(env, eSockAddr, esock_atom_family, &efam))
+ return ESOCK_STR_EINVAL;
+
+ UDBG( ("SUTIL", "esock_decode_sockaddr -> try decode domain (%T)\r\n", efam) );
+ if ((xres = esock_decode_domain(env, efam, &fam)) != NULL)
+ return xres;
+
+ UDBG( ("SUTIL", "esock_decode_sockaddr -> fam: %d\r\n", fam) );
+ switch (fam) {
+ case AF_INET:
+ xres = esock_decode_sockaddr_in4(env, eSockAddr,
+ &sockAddrP->in4, addrLen);
+ break;
+
+#if defined(HAVE_IN6) && defined(AF_INET6)
+ case AF_INET6:
+ xres = esock_decode_sockaddr_in6(env, eSockAddr,
+ &sockAddrP->in6, addrLen);
+ break;
+#endif
+
+#ifdef HAVE_SYS_UN_H
+ case AF_UNIX:
+ xres = esock_decode_sockaddr_un(env, eSockAddr,
+ &sockAddrP->un, addrLen);
+ break;
+#endif
+
+ default:
+ xres = ESOCK_STR_EAFNOSUPPORT;
+ break;
+
+ }
+
+ return xres;
+}
+
+
+
+/* +++ esock_encode_sockaddr +++
+ *
+ * Encode a socket address - sockaddr. In erlang its represented as
+ * a map, which has a specific set of attributes, depending on one
+ * mandatory attribute; family. So depending on the value of the family
+ * attribute:
+ *
+ * local - sockaddr_un: path
+ * inet - sockaddr_in4: port, addr
+ * inet6 - sockaddr_in6: port, addr, flowinfo, scope_id
+ */
+
+extern
+char* esock_encode_sockaddr(ErlNifEnv* env,
+ SocketAddress* sockAddrP,
+ unsigned int addrLen,
+ ERL_NIF_TERM* eSockAddr)
+{
+ char* xres;
+
+ UDBG( ("SUTIL", "esock_encode_sockaddr -> entry with"
+ "\r\n family: %d"
+ "\r\n addrLen: %d"
+ "\r\n", sockAddrP->sa.sa_family, addrLen) );
+
+ switch (sockAddrP->sa.sa_family) {
+ case AF_INET:
+ xres = esock_encode_sockaddr_in4(env, &sockAddrP->in4, addrLen, eSockAddr);
+ break;
+
+#if defined(HAVE_IN6) && defined(AF_INET6)
+ case AF_INET6:
+ xres = esock_encode_sockaddr_in6(env, &sockAddrP->in6, addrLen, eSockAddr);
+ break;
+#endif
+
+#ifdef HAVE_SYS_UN_H
+ case AF_UNIX:
+ xres = esock_encode_sockaddr_un(env, &sockAddrP->un, addrLen, eSockAddr);
+ break;
+#endif
+
+ default:
+ *eSockAddr = esock_atom_undefined;
+ xres = ESOCK_STR_EAFNOSUPPORT;
+ break;
+
+ }
+
+ return xres;
+}
+
+
+
+/* +++ esock_decode_sockaddr_in4 +++
+ *
+ * Decode a IPv4 socket address - sockaddr_in4. In erlang its represented as
+ * a map, which has a specific set of attributes (beside the mandatory family
+ * attribute, which is "inherited" from the "sockaddr" type):
+ *
+ * port :: port_numbber()
+ * addr :: ip4_address()
+ *
+ * The erlang module ensures that both of these has values exist, so there
+ * is no need for any elaborate error handling.
+ */
+
+extern
+char* esock_decode_sockaddr_in4(ErlNifEnv* env,
+ ERL_NIF_TERM eSockAddr,
+ struct sockaddr_in* sockAddrP,
+ unsigned int* addrLen)
+{
+ ERL_NIF_TERM eport, eaddr;
+ int port;
+ char* xres;
+
+ UDBG( ("SUTIL", "esock_decode_sockaddr_in4 -> entry\r\n") );
+
+ /* Basic init */
+ sys_memzero((char*) sockAddrP, sizeof(struct sockaddr_in));
+
+#ifndef NO_SA_LEN
+ sockAddrP->sin_len = sizeof(struct sockaddr_in);
+#endif
+
+ sockAddrP->sin_family = AF_INET;
+
+ /* Extract (e) port number from map */
+ UDBG( ("SUTIL", "esock_decode_sockaddr_in4 -> try get port number\r\n") );
+ if (!GET_MAP_VAL(env, eSockAddr, esock_atom_port, &eport))
+ return ESOCK_STR_EINVAL;
+
+ /* Decode port number */
+ UDBG( ("SUTIL", "esock_decode_sockaddr_in4 -> try decode port number\r\n") );
+ if (!GET_INT(env, eport, &port))
+ return ESOCK_STR_EINVAL;
+
+ sockAddrP->sin_port = htons(port);
+
+ /* Extract (e) address from map */
+ UDBG( ("SUTIL", "esock_decode_sockaddr_in4 -> try get (ip) address\r\n") );
+ if (!GET_MAP_VAL(env, eSockAddr, esock_atom_addr, &eaddr))
+ return ESOCK_STR_EINVAL;
+
+ /* Decode address */
+ UDBG( ("SUTIL", "esock_decode_sockaddr_in4 -> try decode (ip) address\r\n") );
+ if ((xres = esock_decode_ip4_address(env,
+ eaddr,
+ &sockAddrP->sin_addr)) != NULL)
+ return xres;
+
+ *addrLen = sizeof(struct sockaddr_in);
+
+ UDBG( ("SUTIL", "esock_decode_sockaddr_in4 -> done\r\n") );
+
+ return NULL;
+}
+
+
+
+/* +++ esock_encode_sockaddr_in4 +++
+ *
+ * Encode a IPv4 socket address - sockaddr_in4. In erlang its represented as
+ * a map, which has a specific set of attributes (beside the mandatory family
+ * attribute, which is "inherited" from the "sockaddr" type):
+ *
+ * port :: port_numbber()
+ * addr :: ip4_address()
+ *
+ */
+
+extern
+char* esock_encode_sockaddr_in4(ErlNifEnv* env,
+ struct sockaddr_in* sockAddrP,
+ unsigned int addrLen,
+ ERL_NIF_TERM* eSockAddr)
+{
+ ERL_NIF_TERM ePort, eAddr;
+ int port;
+ char* xres = NULL;
+
+ UDBG( ("SUTIL", "esock_encode_sockaddr_in4 -> entry\r\n") );
+
+ if (addrLen >= sizeof(struct sockaddr_in)) {
+ /* The port */
+ port = ntohs(sockAddrP->sin_port);
+ ePort = MKI(env, port);
+
+ /* The address */
+ if ((xres = esock_encode_ip4_address(env, &sockAddrP->sin_addr,
+ &eAddr)) == NULL) {
+ /* And finally construct the in4_sockaddr record */
+ xres = make_sockaddr_in4(env, ePort, eAddr, eSockAddr);
+ } else {
+ UDBG( ("SUTIL", "esock_encode_sockaddr_in4 -> "
+ "failed encoding (ip) address: "
+ "\r\n xres: %s"
+ "\r\n", xres) );
+ *eSockAddr = esock_atom_undefined;
+ xres = ESOCK_STR_EINVAL;
+ }
+
+ } else {
+ UDBG( ("SUTIL", "esock_encode_sockaddr_in4 -> wrong size: "
+ "\r\n addrLen: %d"
+ "\r\n addr size: %d"
+ "\r\n", addrLen, sizeof(struct sockaddr_in)) );
+ *eSockAddr = esock_atom_undefined;
+ xres = ESOCK_STR_EINVAL;
+ }
+
+ return xres;
+}
+
+
+
+/* +++ esock_decode_sockaddr_in6 +++
+ *
+ * Decode a IPv6 socket address - sockaddr_in6. In erlang its represented as
+ * a map, which has a specific set of attributes (beside the mandatory family
+ * attribute, which is "inherited" from the "sockaddr" type):
+ *
+ * port :: port_numbber() (integer)
+ * addr :: ip6_address() (tuple)
+ * flowinfo :: in6_flow_info() (integer)
+ * scope_id :: in6_scope_id() (integer)
+ *
+ * The erlang module ensures that all of these has values exist, so there
+ * is no need for any elaborate error handling here.
+ */
+
+#if defined(HAVE_IN6) && defined(AF_INET6)
+extern
+char* esock_decode_sockaddr_in6(ErlNifEnv* env,
+ ERL_NIF_TERM eSockAddr,
+ struct sockaddr_in6* sockAddrP,
+ unsigned int* addrLen)
+{
+ ERL_NIF_TERM eport, eaddr, eflowInfo, escopeId;
+ int port;
+ unsigned int flowInfo, scopeId;
+ char* xres;
+
+ UDBG( ("SUTIL", "esock_decode_sockaddr_in6 -> entry\r\n") );
+
+ /* Basic init */
+ sys_memzero((char*) sockAddrP, sizeof(struct sockaddr_in6));
+#ifndef NO_SA_LEN
+ sockAddrP->sin6_len = sizeof(struct sockaddr_in);
+#endif
+
+ sockAddrP->sin6_family = AF_INET6;
+
+ /* *** Extract (e) port number from map *** */
+ if (!GET_MAP_VAL(env, eSockAddr, esock_atom_port, &eport))
+ return ESOCK_STR_EINVAL;
+
+ /* Decode port number */
+ if (!GET_INT(env, eport, &port))
+ return ESOCK_STR_EINVAL;
+
+ UDBG( ("SUTIL", "esock_decode_sockaddr_in6 -> port: %d\r\n", port) );
+
+ sockAddrP->sin6_port = htons(port);
+
+ /* *** Extract (e) flowinfo from map *** */
+ if (!GET_MAP_VAL(env, eSockAddr, esock_atom_flowinfo, &eflowInfo))
+ return ESOCK_STR_EINVAL;
+
+ /* 4: Get the flowinfo */
+ if (!GET_UINT(env, eflowInfo, &flowInfo))
+ return ESOCK_STR_EINVAL;
+
+ UDBG( ("SUTIL", "esock_decode_sockaddr_in6 -> flowinfo: %d\r\n", flowInfo) );
+
+ sockAddrP->sin6_flowinfo = flowInfo;
+
+ /* *** Extract (e) scope_id from map *** */
+ if (!GET_MAP_VAL(env, eSockAddr, esock_atom_scope_id, &escopeId))
+ return ESOCK_STR_EINVAL;
+
+ /* *** Get the scope_id *** */
+ if (!GET_UINT(env, escopeId, &scopeId))
+ return ESOCK_STR_EINVAL;
+
+ UDBG( ("SUTIL", "esock_decode_sockaddr_in6 -> scopeId: %d\r\n", scopeId) );
+
+ sockAddrP->sin6_scope_id = scopeId;
+
+ /* *** Extract (e) address from map *** */
+ if (!GET_MAP_VAL(env, eSockAddr, esock_atom_addr, &eaddr))
+ return ESOCK_STR_EINVAL;
+
+ /* Decode address */
+ if ((xres = esock_decode_ip6_address(env,
+ eaddr,
+ &sockAddrP->sin6_addr)) != NULL)
+ return xres;
+
+ *addrLen = sizeof(struct sockaddr_in6);
+
+ UDBG( ("SUTIL", "esock_decode_sockaddr_in6 -> done\r\n") );
+
+ return NULL;
+}
+#endif
+
+
+
+/* +++ esock_encode_sockaddr_in6 +++
+ *
+ * Encode a IPv6 socket address - sockaddr_in6. In erlang its represented as
+ * a map, which has a specific set of attributes (beside the mandatory family
+ * attribute, which is "inherited" from the "sockaddr" type):
+ *
+ * port :: port_numbber() (integer)
+ * addr :: ip6_address() (tuple)
+ * flowinfo :: in6_flow_info() (integer)
+ * scope_id :: in6_scope_id() (integer)
+ *
+ */
+
+#if defined(HAVE_IN6) && defined(AF_INET6)
+extern
+char* esock_encode_sockaddr_in6(ErlNifEnv* env,
+ struct sockaddr_in6* sockAddrP,
+ unsigned int addrLen,
+ ERL_NIF_TERM* eSockAddr)
+{
+ ERL_NIF_TERM ePort, eAddr, eFlowInfo, eScopeId;
+ char* xres;
+
+ if (addrLen >= sizeof(struct sockaddr_in6)) {
+ /* The port */
+ ePort = MKI(env, ntohs(sockAddrP->sin6_port));
+
+ /* The flowInfo */
+ eFlowInfo = MKI(env, sockAddrP->sin6_flowinfo);
+
+ /* The scopeId */
+ eScopeId = MKI(env, sockAddrP->sin6_scope_id);
+
+ /* The address */
+ if ((xres = esock_encode_ip6_address(env, &sockAddrP->sin6_addr,
+ &eAddr)) == NULL) {
+ /* And finally construct the in6_sockaddr record */
+ xres = make_sockaddr_in6(env,
+ ePort, eAddr, eFlowInfo, eScopeId, eSockAddr);
+ } else {
+ *eSockAddr = esock_atom_undefined;
+ xres = ESOCK_STR_EINVAL;
+ }
+
+ } else {
+ *eSockAddr = esock_atom_undefined;
+ xres = ESOCK_STR_EINVAL;
+ }
+
+ return xres;
+}
+#endif
+
+
+
+/* +++ esock_decode_sockaddr_un +++
+ *
+ * Decode a Unix Domain socket address - sockaddr_un. In erlang its
+ * represented as a map, which has a specific set of attributes
+ * (beside the mandatory family attribute, which is "inherited" from
+ * the "sockaddr" type):
+ *
+ * path :: binary()
+ *
+ * The erlang module ensures that this value exist, so there
+ * is no need for any elaborate error handling here.
+ */
+
+#ifdef HAVE_SYS_UN_H
+extern
+char* esock_decode_sockaddr_un(ErlNifEnv* env,
+ ERL_NIF_TERM eSockAddr,
+ struct sockaddr_un* sockAddrP,
+ unsigned int* addrLen)
+{
+ ErlNifBinary bin;
+ ERL_NIF_TERM epath;
+ unsigned int len;
+
+ /* *** Extract (e) path (a binary) from map *** */
+ if (!GET_MAP_VAL(env, eSockAddr, esock_atom_path, &epath))
+ return ESOCK_STR_EINVAL;
+
+ /* Get the path */
+ if (!GET_BIN(env, epath, &bin))
+ return ESOCK_STR_EINVAL;
+
+ if ((bin.size +
+#ifdef __linux__
+ /* Make sure the address gets zero terminated
+ * except when the first byte is \0 because then it is
+ * sort of zero terminated although the zero termination
+ * comes before the address...
+ * This fix handles Linux's nonportable
+ * abstract socket address extension.
+ */
+ (bin.data[0] == '\0' ? 0 : 1)
+#else
+ 1
+#endif
+ ) > sizeof(sockAddrP->sun_path))
+ return ESOCK_STR_EINVAL;
+
+
+ sys_memzero((char*) sockAddrP, sizeof(struct sockaddr_un));
+ sockAddrP->sun_family = AF_UNIX;
+
+ sys_memcpy(sockAddrP->sun_path, bin.data, bin.size);
+ len = offsetof(struct sockaddr_un, sun_path) + bin.size;
+
+#ifndef NO_SA_LEN
+ sockAddrP->sun_len = len;
+#endif
+ *addrLen = len;
+
+ return NULL;
+}
+#endif
+
+
+
+/* +++ esock_encode_sockaddr_un +++
+ *
+ * Encode a Unix Domain socket address - sockaddr_un. In erlang its
+ * represented as a map, which has a specific set of attributes
+ * (beside the mandatory family attribute, which is "inherited" from
+ * the "sockaddr" type):
+ *
+ * path :: binary()
+ *
+ */
+
+#ifdef HAVE_SYS_UN_H
+extern
+char* esock_encode_sockaddr_un(ErlNifEnv* env,
+ struct sockaddr_un* sockAddrP,
+ unsigned int addrLen,
+ ERL_NIF_TERM* eSockAddr)
+{
+ ERL_NIF_TERM ePath;
+ size_t n, m;
+ char* xres;
+
+ if (addrLen >= offsetof(struct sockaddr_un, sun_path)) {
+ n = addrLen - offsetof(struct sockaddr_un, sun_path);
+ if (255 < n) {
+ *eSockAddr = esock_atom_undefined;
+ xres = ESOCK_STR_EINVAL;
+ } else {
+ m = esock_strnlen(sockAddrP->sun_path, n);
+#ifdef __linux__
+ /* Assume that the address is a zero terminated string,
+ * except when the first byte is \0 i.e the string length is 0,
+ * then use the reported length instead.
+ * This fix handles Linux's nonportable
+ * abstract socket address extension.
+ */
+ if (m == 0) {
+ m = n;
+ }
+#endif
+
+ /* And finally build the 'path' attribute */
+ ePath = MKSL(env, sockAddrP->sun_path, m);
+
+ /* And the socket address */
+ xres = make_sockaddr_un(env, ePath, eSockAddr);
+ }
+ } else {
+ *eSockAddr = esock_atom_undefined;
+ xres = ESOCK_STR_EINVAL;
+ }
+
+ return xres;
+}
+#endif
+
+
+
+/* +++ esock_decode_ip4_address +++
+ *
+ * Decode a IPv4 address. This can be three things:
+ *
+ * + Then atom 'any'
+ * + Then atom 'loopback'
+ * + An ip4_address() (4 tuple)
+ *
+ * Note that this *only* decodes the "address" part of a
+ * (IPv4) socket address.
+ */
+
+extern
+char* esock_decode_ip4_address(ErlNifEnv* env,
+ ERL_NIF_TERM eAddr,
+ struct in_addr* inAddrP)
+{
+ struct in_addr addr;
+
+ UDBG( ("SUTIL", "esock_decode_ip4_address -> entry with"
+ "\r\n eAddr: %T"
+ "\r\n", eAddr) );
+
+ if (IS_ATOM(env, eAddr)) {
+ /* This is either 'any' or 'loopback' */
+
+ if (COMPARE(esock_atom_loopback, eAddr) == 0) {
+ UDBG( ("SUTIL", "esock_decode_ip4_address -> address: lookback\r\n") );
+ addr.s_addr = htonl(INADDR_LOOPBACK);
+ } else if (COMPARE(esock_atom_any, eAddr) == 0) {
+ UDBG( ("SUTIL", "esock_decode_ip4_address -> address: any\r\n") );
+ addr.s_addr = htonl(INADDR_ANY);
+ } else {
+ UDBG( ("SUTIL", "esock_decode_ip4_address -> address: unknown\r\n") );
+ return ESOCK_STR_EINVAL;
+ }
+
+ inAddrP->s_addr = addr.s_addr;
+
+ } else {
+ /* This is a 4-tuple */
+
+ const ERL_NIF_TERM* addrt;
+ int addrtSz;
+ int a, v;
+ char addr[4];
+
+ if (!GET_TUPLE(env, eAddr, &addrtSz, &addrt))
+ return ESOCK_STR_EINVAL;
+
+ if (addrtSz != 4)
+ return ESOCK_STR_EINVAL;
+
+ for (a = 0; a < 4; a++) {
+ if (!GET_INT(env, addrt[a], &v))
+ return ESOCK_STR_EINVAL;
+ addr[a] = v;
+ }
+
+ sys_memcpy(inAddrP, &addr, sizeof(addr));
+
+ }
+
+ return NULL;
+}
+
+
+
+/* +++ esock_encode_ip4_address +++
+ *
+ * Encode a IPv4 address:
+ *
+ * + An ip4_address() (4 tuple)
+ *
+ * Note that this *only* decodes the "address" part of a
+ * (IPv4) socket address. There are several other things (port).
+ */
+
+extern
+char* esock_encode_ip4_address(ErlNifEnv* env,
+ struct in_addr* addrP,
+ ERL_NIF_TERM* eAddr)
+{
+ unsigned int i;
+ ERL_NIF_TERM at[4];
+ unsigned int atLen = sizeof(at) / sizeof(ERL_NIF_TERM);
+ unsigned char* a = (unsigned char*) addrP;
+ ERL_NIF_TERM addr;
+
+ /* The address */
+ for (i = 0; i < atLen; i++) {
+ at[i] = MKI(env, a[i]);
+ }
+
+ addr = MKTA(env, at, atLen);
+ UDBG( ("SUTIL", "esock_encode_ip4_address -> addr: %T\r\n", addr) );
+ // *eAddr = MKTA(env, at, atLen);
+ *eAddr = addr;
+
+ return NULL;
+}
+
+
+
+/* +++ esock_decode_ip6_address +++
+ *
+ * Decode a IPv6 address. This can be three things:
+ *
+ * + Then atom 'any'
+ * + Then atom 'loopback'
+ * + An ip6_address() (8 tuple)
+ *
+ * Note that this *only* decodes the "address" part of a
+ * (IPv6) socket address. There are several other things
+ * (port, flowinfo and scope_id) that are handled elsewhere).
+ */
+
+#if defined(HAVE_IN6) && defined(AF_INET6)
+extern
+char* esock_decode_ip6_address(ErlNifEnv* env,
+ ERL_NIF_TERM eAddr,
+ struct in6_addr* inAddrP)
+{
+ UDBG( ("SUTIL", "esock_decode_ip6_address -> entry with"
+ "\r\n eAddr: %T"
+ "\r\n", eAddr) );
+
+ if (IS_ATOM(env, eAddr)) {
+ /* This is either 'any' or 'loopback' */
+ const struct in6_addr* addr;
+
+ if (COMPARE(esock_atom_loopback, eAddr) == 0) {
+ addr = &in6addr_loopback;
+ } else if (COMPARE(esock_atom_any, eAddr) == 0) {
+ addr = &in6addr_any;
+ } else {
+ return ESOCK_STR_EINVAL;
+ }
+
+ *inAddrP = *addr;
+
+ } else {
+ /* This is a 8-tuple */
+
+ const ERL_NIF_TERM* addrt;
+ int addrtSz;
+ int ai, v;
+ unsigned char addr[16];
+ unsigned char* a = addr;
+ unsigned int addrLen = sizeof(addr) / sizeof(unsigned char);
+
+ if (!GET_TUPLE(env, eAddr, &addrtSz, &addrt))
+ return ESOCK_STR_EINVAL;
+
+ if (addrtSz != 8)
+ return ESOCK_STR_EINVAL;
+
+ for (ai = 0; ai < 8; ai++) {
+ if (!GET_INT(env, addrt[ai], &v))
+ return ESOCK_STR_EINVAL;
+ put_int16(v, a);
+ a += 2;
+ }
+
+ sys_memcpy(inAddrP, &addr, addrLen);
+
+ }
+
+ return NULL;
+}
+#endif
+
+
+
+/* +++ esock_encode_ip6_address +++
+ *
+ * Encode a IPv6 address:
+ *
+ * + An ip6_address() (8 tuple)
+ *
+ * Note that this *only* encodes the "address" part of a
+ * (IPv6) socket address. There are several other things
+ * (port, flowinfo and scope_id) that are handled elsewhere).
+ */
+
+#if defined(HAVE_IN6) && defined(AF_INET6)
+extern
+char* esock_encode_ip6_address(ErlNifEnv* env,
+ struct in6_addr* addrP,
+ ERL_NIF_TERM* eAddr)
+{
+ unsigned int i;
+ ERL_NIF_TERM at[8];
+ unsigned int atLen = sizeof(at) / sizeof(ERL_NIF_TERM);
+ unsigned char* a = (unsigned char*) addrP;
+
+ /* The address */
+ for (i = 0; i < atLen; i++) {
+ at[i] = MKI(env, get_int16(a + i*2));
+ }
+
+ *eAddr = MKTA(env, at, atLen);
+
+ return NULL;
+}
+#endif
+
+
+
+/* +++ esock_encode_timeval +++
+ *
+ * Encode a timeval struct into its erlang form, a map with two fields:
+ *
+ * sec
+ * usec
+ *
+ */
+extern
+char* esock_encode_timeval(ErlNifEnv* env,
+ struct timeval* timeP,
+ ERL_NIF_TERM* eTime)
+{
+ ERL_NIF_TERM keys[] = {esock_atom_sec, esock_atom_usec};
+ ERL_NIF_TERM vals[] = {MKL(env, timeP->tv_sec), MKL(env, timeP->tv_usec)};
+
+ unsigned int numKeys = sizeof(keys) / sizeof(ERL_NIF_TERM);
+ unsigned int numVals = sizeof(vals) / sizeof(ERL_NIF_TERM);
+
+ ESOCK_ASSERT( (numKeys == numVals) );
+
+ if (!MKMA(env, keys, vals, numKeys, eTime))
+ return ESOCK_STR_EINVAL;
+
+ return NULL;
+}
+
+
+
+/* +++ esock_decode_timeval +++
+ *
+ * Decode a timeval in its erlang form (a map) into its native form,
+ * a timeval struct.
+ *
+ */
+extern
+char* esock_decode_timeval(ErlNifEnv* env,
+ ERL_NIF_TERM eTime,
+ struct timeval* timeP)
+{
+ ERL_NIF_TERM eSec, eUSec;
+ size_t sz;
+
+ // It must be a map
+ if (!IS_MAP(env, eTime))
+ return ESOCK_STR_EINVAL;
+
+ // It must have atleast two attributes
+ if (!enif_get_map_size(env, eTime, &sz) || (sz < 2))
+ return ESOCK_STR_EINVAL;
+
+ if (!GET_MAP_VAL(env, eTime, esock_atom_sec, &eSec))
+ return ESOCK_STR_EINVAL;
+
+ if (!GET_MAP_VAL(env, eTime, esock_atom_usec, &eUSec))
+ return ESOCK_STR_EINVAL;
+
+ if (!GET_LONG(env, eSec, &timeP->tv_sec))
+ return ESOCK_STR_EINVAL;
+
+ if (!GET_LONG(env, eUSec, &timeP->tv_usec))
+ return ESOCK_STR_EINVAL;
+
+ return NULL;
+}
+
+
+
+/* +++ esock_decode_domain +++
+ *
+ * Decode the Erlang form of the 'domain' type, that is:
+ *
+ * inet => AF_INET
+ * inet6 => AF_INET6
+ * local => AF_UNIX
+ *
+ */
+extern
+char* esock_decode_domain(ErlNifEnv* env,
+ ERL_NIF_TERM eDomain,
+ int* domain)
+{
+ char* xres = NULL;
+
+ if (COMPARE(esock_atom_inet, eDomain) == 0) {
+ *domain = AF_INET;
+
+#if defined(HAVE_IN6) && defined(AF_INET6)
+ } else if (COMPARE(esock_atom_inet6, eDomain) == 0) {
+ *domain = AF_INET6;
+#endif
+
+#ifdef HAVE_SYS_UN_H
+ } else if (COMPARE(esock_atom_local, eDomain) == 0) {
+ *domain = AF_UNIX;
+#endif
+
+ } else {
+ *domain = -1;
+ xres = ESOCK_STR_EAFNOSUPPORT;
+ }
+
+ return xres;
+}
+
+
+
+/* +++ esock_encode_domain +++
+ *
+ * Encode the native domain to the Erlang form, that is:
+ *
+ * AF_INET => inet
+ * AF_INET6 => inet6
+ * AF_UNIX => local
+ *
+ */
+extern
+char* esock_encode_domain(ErlNifEnv* env,
+ int domain,
+ ERL_NIF_TERM* eDomain)
+{
+ char* xres = NULL;
+
+ switch (domain) {
+ case AF_INET:
+ *eDomain = esock_atom_inet;
+ break;
+
+#if defined(HAVE_IN6) && defined(AF_INET6)
+ case AF_INET6:
+ *eDomain = esock_atom_inet6;
+ break;
+#endif
+
+#ifdef HAVE_SYS_UN_H
+ case AF_UNIX:
+ *eDomain = esock_atom_local;
+ break;
+#endif
+
+ default:
+ *eDomain = esock_atom_undefined; // Just in case
+ xres = ESOCK_STR_EAFNOSUPPORT;
+ }
+
+ return xres;
+}
+
+
+
+/* +++ esock_decode_type +++
+ *
+ * Decode the Erlang form of the 'type' type, that is:
+ *
+ * stream => SOCK_STREAM
+ * dgram => SOCK_DGRAM
+ * raw => SOCK_RAW
+ * seqpacket => SOCK_SEQPACKET
+ *
+ */
+extern
+char* esock_decode_type(ErlNifEnv* env,
+ ERL_NIF_TERM eType,
+ int* type)
+{
+ char* xres = NULL;
+
+ if (COMPARE(esock_atom_stream, eType) == 0) {
+ *type = SOCK_STREAM;
+ } else if (COMPARE(esock_atom_dgram, eType) == 0) {
+ *type = SOCK_DGRAM;
+ } else if (COMPARE(esock_atom_raw, eType) == 0) {
+ *type = SOCK_RAW;
+
+#if defined(HAVE_SCTP)
+ } else if (COMPARE(esock_atom_seqpacket, eType) == 0) {
+ *type = SOCK_SEQPACKET;
+#endif
+
+ } else {
+ *type = -1;
+ xres = ESOCK_STR_EAFNOSUPPORT;
+ }
+
+ return xres;
+}
+
+
+
+/* +++ esock_decode_type +++
+ *
+ * Encode the native type to the Erlang form, that is:
+ *
+ * SOCK_STREAM => stream
+ * SOCK_DGRAM => dgram
+ * SOCK_RAW => raw
+ * SOCK_SEQPACKET => seqpacket
+ *
+ */
+extern
+char* esock_encode_type(ErlNifEnv* env,
+ int type,
+ ERL_NIF_TERM* eType)
+{
+ char* xres = NULL;
+
+ switch (type) {
+ case SOCK_STREAM:
+ *eType = esock_atom_stream;
+ break;
+
+ case SOCK_DGRAM:
+ *eType = esock_atom_dgram;
+ break;
+
+ case SOCK_RAW:
+ *eType = esock_atom_raw;
+ break;
+
+#if defined(HAVE_SCTP)
+ case SOCK_SEQPACKET:
+ *eType = esock_atom_seqpacket;
+ break;
+#endif
+
+ default:
+ *eType = esock_atom_undefined; // Just in case
+ xres = ESOCK_STR_EAFNOSUPPORT;
+ }
+
+ return xres;
+}
+
+
+
+/* +++ esock_encode_protocol +++
+ *
+ * Encode the native protocol to the Erlang form, that is:
+ *
+ * SOL_IP | IPPROTO_IP => ip
+ * SOL_IPV6 => ipv6
+ * SOL_TCP => tcp
+ * SOL_UDP => udp
+ * SOL_SCTP => sctp
+ *
+ */
+extern
+char* esock_encode_protocol(ErlNifEnv* env,
+ int proto,
+ ERL_NIF_TERM* eProto)
+{
+ char* xres = NULL;
+
+ switch (proto) {
+#if defined(SOL_IP)
+ case SOL_IP:
+#else
+ case IPPROTO_IP:
+#endif
+ *eProto = esock_atom_ip;
+ break;
+
+#if defined(SOL_IPV6)
+ case SOL_IPV6:
+ *eProto = esock_atom_ipv6;
+ break;
+#endif
+
+ case IPPROTO_TCP:
+ *eProto = esock_atom_tcp;
+ break;
+
+ case IPPROTO_UDP:
+ *eProto = esock_atom_udp;
+ break;
+
+#if defined(HAVE_SCTP)
+ case IPPROTO_SCTP:
+ *eProto = esock_atom_sctp;
+ break;
+#endif
+
+ default:
+ *eProto = esock_atom_undefined;
+ xres = ESOCK_STR_EAFNOSUPPORT;
+ break;
+ }
+
+ return xres;
+}
+
+
+
+/* +++ esock_decode_protocol +++
+ *
+ * Decode the Erlang form of the 'protocol' type, that is:
+ *
+ * ip => SOL_IP | IPPROTO_IP
+ * ipv6 => SOL_IPV6
+ * tcp => SOL_TCP
+ * udp => SOL_UDP
+ * sctp => SOL_SCTP
+ *
+ */
+extern
+char* esock_decode_protocol(ErlNifEnv* env,
+ ERL_NIF_TERM eProto,
+ int* proto)
+{
+ char* xres = NULL;
+
+ if (COMPARE(esock_atom_ip, eProto) == 0) {
+#if defined(SOL_IP)
+ *proto = SOL_IP;
+#else
+ *proto = IPPROTO_IP;
+#endif
+ } else if (COMPARE(esock_atom_ipv6, eProto) == 0) {
+#if defined(SOL_IPV6)
+ *proto = SOL_IPV6;
+#else
+ *proto = IPPROTO_IPV6;
+#endif
+ } else if (COMPARE(esock_atom_tcp, eProto) == 0) {
+ *proto = IPPROTO_TCP;
+ } else if (COMPARE(esock_atom_udp, eProto) == 0) {
+ *proto = IPPROTO_UDP;
+#if defined(HAVE_SCTP)
+ } else if (COMPARE(esock_atom_sctp, eProto) == 0) {
+ *proto = IPPROTO_SCTP;
+#endif
+ } else {
+ *proto = -1;
+ xres = ESOCK_STR_EAFNOSUPPORT;
+ }
+
+ return xres;
+}
+
+
+
+/* +++ esock_decode_bufsz +++
+ *
+ * Decode an buffer size. The size of a buffer is:
+ *
+ * Sz > 0 => Use provided value
+ * Sz => Use provided default
+ *
+ */
+extern
+char* esock_decode_bufsz(ErlNifEnv* env,
+ ERL_NIF_TERM eVal,
+ size_t defSz,
+ size_t* sz)
+{
+ int val;
+
+ if (!GET_INT(env, eVal, &val))
+ return ESOCK_STR_EINVAL;
+
+ if (val > 0)
+ *sz = (size_t) val;
+ else
+ *sz = defSz;
+
+ return NULL;
+}
+
+
+
+/* *** esock_decode_string ***
+ *
+ * Decode a string value. A successful decode results in an
+ * allocation of the string, which the caller has to free
+ * once the string has been used.
+ */
+extern
+BOOLEAN_T esock_decode_string(ErlNifEnv* env,
+ const ERL_NIF_TERM eString,
+ char** stringP)
+{
+ BOOLEAN_T result;
+ unsigned int len;
+ char* bufP;
+
+ if (!GET_LIST_LEN(env, eString, &len) && (len != 0)) {
+ *stringP = NULL;
+ result = FALSE;
+ } else {
+
+ UDBG( ("SUTIL", "esock_decode_string -> len: %d\r\n", len) );
+
+ bufP = MALLOC(len + 1); // We shall NULL-terminate
+
+ if (GET_STR(env, eString, bufP, len+1)) {
+ UDBG( ("SUTIL", "esock_decode_string -> buf: %s\r\n", bufP) );
+ // bufP[len] = '\0';
+ *stringP = bufP;
+ result = TRUE;
+ } else {
+ *stringP = NULL;
+ result = FALSE;
+ FREE(bufP);
+ }
+ }
+
+ return result;
+}
+
+
+
+/* *** esock_extract_bool_from_map ***
+ *
+ * Extract an boolean item from a map.
+ *
+ */
+extern
+BOOLEAN_T esock_extract_bool_from_map(ErlNifEnv* env,
+ ERL_NIF_TERM map,
+ ERL_NIF_TERM key,
+ BOOLEAN_T def)
+{
+ ERL_NIF_TERM val;
+
+ if (!GET_MAP_VAL(env, map, key, &val))
+ return def;
+
+ if (!IS_ATOM(env, val))
+ return def;
+
+ if (COMPARE(val, esock_atom_true) == 0)
+ return TRUE;
+ else
+ return FALSE;
+}
+
+
+
+/* *** esock_decode_bool ***
+ *
+ * Decode a boolean value.
+ *
+ */
+extern
+BOOLEAN_T esock_decode_bool(ERL_NIF_TERM val)
+{
+ if (COMPARE(esock_atom_true, val) == 0)
+ return TRUE;
+ else
+ return FALSE;
+}
+
+
+/* *** esock_encode_bool ***
+ *
+ * Encode a boolean value.
+ *
+ */
+extern
+ERL_NIF_TERM esock_encode_bool(BOOLEAN_T val)
+{
+ if (val)
+ return esock_atom_true;
+ else
+ return esock_atom_false;
+}
+
+
+/* Create an ok two (2) tuple in the form:
+ *
+ * {ok, Any}
+ *
+ * The second element (Any) is already in the form of an
+ * ERL_NIF_TERM so all we have to do is create the tuple.
+ */
+extern
+ERL_NIF_TERM esock_make_ok2(ErlNifEnv* env, ERL_NIF_TERM any)
+{
+ return MKT2(env, esock_atom_ok, any);
+}
+
+
+/* Create an ok three (3) tuple in the form:
+ *
+ * {ok, Val1, Val2}
+ *
+ * The second (Val1) and third (Val2) elements are already in
+ * the form of an ERL_NIF_TERM so all we have to do is create
+ * the tuple.
+ */
+extern
+ERL_NIF_TERM esock_make_ok3(ErlNifEnv* env, ERL_NIF_TERM val1, ERL_NIF_TERM val2)
+{
+ return MKT3(env, esock_atom_ok, val1, val2);
+}
+
+
+
+/* Create an error two (2) tuple in the form:
+ *
+ * {error, Reason}
+ *
+ * The second element (Reason) is already in the form of an
+ * ERL_NIF_TERM so all we have to do is create the tuple.
+ */
+extern
+ERL_NIF_TERM esock_make_error(ErlNifEnv* env, ERL_NIF_TERM reason)
+{
+ return MKT2(env, esock_atom_error, reason);
+}
+
+
+
+/* Create an error two (2) tuple in the form: {error, Reason}.
+ *
+ * {error, Reason}
+ *
+ * The second element, Reason, is the reason string that has
+ * converted into an atom.
+ */
+extern
+ERL_NIF_TERM esock_make_error_str(ErlNifEnv* env, char* reason)
+{
+ return esock_make_error(env, MKA(env, reason));
+}
+
+
+/* Create an error two (2) tuple in the form:
+ *
+ * {error, Reason}
+ *
+ * The second element, Reason, is the errno value in its
+ * basic form (integer) which has been converted into an atom.
+ */
+extern
+ERL_NIF_TERM esock_make_error_errno(ErlNifEnv* env, int err)
+{
+ return esock_make_error_str(env, erl_errno_id(err));
+}
+
+
+
+/* strnlen doesn't exist everywhere */
+extern
+size_t esock_strnlen(const char *s, size_t maxlen)
+{
+ size_t i = 0;
+ while (i < maxlen && s[i] != '\0')
+ i++;
+ return i;
+}
+
+
+
+/* *** esock_abort ***
+ *
+ * Generate an abort with "extra" info. This should be called
+ * via the ESOCK_ABORT macro.
+ * Basically it prints the extra info onto stderr before aborting.
+ *
+ */
+extern
+void esock_abort(const char* expr,
+ const char* func,
+ const char* file,
+ int line)
+{
+ fflush(stdout);
+ fprintf(stderr, "%s:%d:%s() Assertion failed: %s\n",
+ file, line, func, expr);
+ fflush(stderr);
+ abort();
+}
+
+
+
+/* *** esock_warning_msg ***
+ *
+ * Temporary function for issuing warning messages.
+ *
+ */
+extern
+void esock_warning_msg( const char* format, ... )
+{
+ va_list args;
+ char f[512 + sizeof(format)]; // This has to suffice...
+ char stamp[64]; // Just in case...
+ struct timespec ts;
+ int res;
+
+ /*
+ * We should really include self in the printout, so we can se which process
+ * are executing the code. But then I must change the API....
+ * ....something for later.
+ */
+
+ // 2018-06-29 12:13:21.232089
+ // 29-Jun-2018::13:47:25.097097
+
+ if (!realtime(&ts)) {
+ if (timespec2str(stamp, sizeof(stamp), &ts) != 0) {
+ res = enif_snprintf(f, sizeof(f), "=WARNING MSG==== %s", format);
+ } else {
+ res = enif_snprintf(f, sizeof(f),
+ "=WARNING MSG==== %s ===\r\n%s" , stamp, format);
+ }
+
+ if (res > 0) {
+ va_start (args, format);
+ enif_vfprintf (stdout, f, args);
+ va_end (args);
+ fflush(stdout);
+ }
+ }
+
+ return;
+}
+
+
+static
+int realtime(struct timespec* tsP)
+{
+ return clock_gettime(CLOCK_REALTIME, tsP);
+}
+
+
+/*
+ * Convert a timespec struct into a readable/printable string.
+ *
+ * "%F::%T" => 2018-06-29 12:13:21[.232089]
+ * "%d-%b-%Y::%T" => 29-Jun-2018::13:47:25.097097
+ */
+static
+int timespec2str(char *buf, unsigned int len, struct timespec *ts)
+{
+ int ret, buflen;
+ struct tm t;
+
+ tzset();
+ if (localtime_r(&(ts->tv_sec), &t) == NULL)
+ return 1;
+
+ ret = strftime(buf, len, "%d-%B-%Y::%T", &t);
+ if (ret == 0)
+ return 2;
+ len -= ret - 1;
+ buflen = strlen(buf);
+
+ ret = snprintf(&buf[buflen], len, ".%06ld", ts->tv_nsec/1000);
+ if (ret >= len)
+ return 3;
+
+ return 0;
+}
+
+
+/* =================================================================== *
+ * *
+ * Various (internal) utility functions *
+ * *
+ * =================================================================== */
+
+/* Construct the IPv4 socket address */
+static
+char* make_sockaddr_in4(ErlNifEnv* env,
+ ERL_NIF_TERM port,
+ ERL_NIF_TERM addr,
+ ERL_NIF_TERM* sa)
+{
+ ERL_NIF_TERM keys[] = {esock_atom_family, esock_atom_port, esock_atom_addr};
+ ERL_NIF_TERM vals[] = {esock_atom_inet, port, addr};
+ unsigned int numKeys = sizeof(keys) / sizeof(ERL_NIF_TERM);
+ unsigned int numVals = sizeof(vals) / sizeof(ERL_NIF_TERM);
+
+ ESOCK_ASSERT( (numKeys == numVals) );
+
+ if (!MKMA(env, keys, vals, numKeys, sa)) {
+ *sa = esock_atom_undefined;
+ return ESOCK_STR_EINVAL;
+ } else {
+ return NULL;
+ }
+}
+
+
+/* Construct the IPv6 socket address */
+static
+char* make_sockaddr_in6(ErlNifEnv* env,
+ ERL_NIF_TERM port,
+ ERL_NIF_TERM addr,
+ ERL_NIF_TERM flowInfo,
+ ERL_NIF_TERM scopeId,
+ ERL_NIF_TERM* sa)
+{
+ ERL_NIF_TERM keys[] = {esock_atom_family,
+ esock_atom_port,
+ esock_atom_addr,
+ esock_atom_flowinfo,
+ esock_atom_scope_id};
+ ERL_NIF_TERM vals[] = {esock_atom_inet6, port, addr, flowInfo, scopeId};
+ unsigned int numKeys = sizeof(keys) / sizeof(ERL_NIF_TERM);
+ unsigned int numVals = sizeof(vals) / sizeof(ERL_NIF_TERM);
+
+ ESOCK_ASSERT( (numKeys == numVals) );
+
+ if (!MKMA(env, keys, vals, numKeys, sa)) {
+ *sa = esock_atom_undefined;
+ return ESOCK_STR_EINVAL;
+ } else {
+ return NULL;
+ }
+}
+
+
+/* Construct the Unix Domain socket address */
+static
+char* make_sockaddr_un(ErlNifEnv* env,
+ ERL_NIF_TERM path,
+ ERL_NIF_TERM* sa)
+{
+ ERL_NIF_TERM keys[] = {esock_atom_family, esock_atom_path};
+ ERL_NIF_TERM vals[] = {esock_atom_inet, path};
+ unsigned int numKeys = sizeof(keys) / sizeof(ERL_NIF_TERM);
+ unsigned int numVals = sizeof(vals) / sizeof(ERL_NIF_TERM);
+
+ ESOCK_ASSERT( (numKeys == numVals) );
+
+ if (!MKMA(env, keys, vals, numKeys, sa)) {
+ *sa = esock_atom_undefined;
+ return ESOCK_STR_EINVAL;
+ } else {
+ return NULL;
+ }
+}
+
+
diff --git a/erts/emulator/nifs/common/socket_util.h b/erts/emulator/nifs/common/socket_util.h
new file mode 100644
index 0000000000..1b5d003155
--- /dev/null
+++ b/erts/emulator/nifs/common/socket_util.h
@@ -0,0 +1,205 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2018-2018. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ *
+ * ----------------------------------------------------------------------
+ * Purpose : Utility "stuff" for socket and net.
+ * ----------------------------------------------------------------------
+ *
+ */
+
+#ifndef SOCKET_UTIL_H__
+#define SOCKET_UTIL_H__
+
+#include <erl_nif.h>
+#include "socket_int.h"
+
+#define CHAR(C) ((char) (C))
+#define UCHAR(C) ((unsigned char) (C))
+#define INT(I) ((int) (I))
+#define UINT(U) ((unsigned int) (U))
+#define LONG(L) ((long) (L))
+#define ULONG(L) ((unsigned long) (L))
+#define SZT(I) ((size_t) (I))
+#define VOIDP(P) ((void*) (P))
+#define CHARP(P) ((char*) (P))
+
+#define ESOCK_ABORT(E) esock_abort(E, __func__, __FILE__, __LINE__)
+#define ESOCK_ASSERT(e) ((void) ((e) ? 1 : (ESOCK_ABORT(#e), 0)))
+
+extern
+char* esock_encode_iov(ErlNifEnv* env,
+ int read,
+ struct iovec* iov,
+ size_t len,
+ ErlNifBinary* data,
+ ERL_NIF_TERM* eIOV);
+extern
+char* esock_decode_iov(ErlNifEnv* env,
+ ERL_NIF_TERM eIOV,
+ ErlNifBinary* bufs,
+ struct iovec* iov,
+ size_t len,
+ ssize_t* totSize);
+extern
+char* esock_decode_sockaddr(ErlNifEnv* env,
+ ERL_NIF_TERM eSockAddr,
+ SocketAddress* sockAddrP,
+ unsigned int* addrLen);
+extern
+char* esock_encode_sockaddr(ErlNifEnv* env,
+ SocketAddress* sockAddrP,
+ unsigned int addrLen,
+ ERL_NIF_TERM* eSockAddr);
+
+extern
+char* esock_decode_sockaddr_in4(ErlNifEnv* env,
+ ERL_NIF_TERM eSockAddr,
+ struct sockaddr_in* sockAddrP,
+ unsigned int* addrLen);
+extern
+char* esock_encode_sockaddr_in4(ErlNifEnv* env,
+ struct sockaddr_in* sockAddrP,
+ unsigned int addrLen,
+ ERL_NIF_TERM* eSockAddr);
+
+#if defined(HAVE_IN6) && defined(AF_INET6)
+extern
+char* esock_decode_sockaddr_in6(ErlNifEnv* env,
+ ERL_NIF_TERM eSockAddr,
+ struct sockaddr_in6* sockAddrP,
+ unsigned int* addrLen);
+extern
+char* esock_encode_sockaddr_in6(ErlNifEnv* env,
+ struct sockaddr_in6* sockAddrP,
+ unsigned int addrLen,
+ ERL_NIF_TERM* eSockAddr);
+#endif
+
+#ifdef HAVE_SYS_UN_H
+extern
+char* esock_decode_sockaddr_un(ErlNifEnv* env,
+ ERL_NIF_TERM eSockAddr,
+ struct sockaddr_un* sockAddrP,
+ unsigned int* addrLen);
+extern
+char* esock_encode_sockaddr_un(ErlNifEnv* env,
+ struct sockaddr_un* sockAddrP,
+ unsigned int addrLen,
+ ERL_NIF_TERM* eSockAddr);
+#endif
+
+extern
+char* esock_decode_ip4_address(ErlNifEnv* env,
+ ERL_NIF_TERM eAddr,
+ struct in_addr* inAddrP);
+extern
+char* esock_encode_ip4_address(ErlNifEnv* env,
+ struct in_addr* addrP,
+ ERL_NIF_TERM* eAddr);
+
+#if defined(HAVE_IN6) && defined(AF_INET6)
+extern
+char* esock_decode_ip6_address(ErlNifEnv* env,
+ ERL_NIF_TERM eAddr,
+ struct in6_addr* inAddrP);
+extern
+char* esock_encode_ip6_address(ErlNifEnv* env,
+ struct in6_addr* addrP,
+ ERL_NIF_TERM* eAddr);
+#endif
+
+extern char* esock_encode_timeval(ErlNifEnv* env,
+ struct timeval* timeP,
+ ERL_NIF_TERM* eTime);
+extern char* esock_decode_timeval(ErlNifEnv* env,
+ ERL_NIF_TERM eTime,
+ struct timeval* timeP);
+extern
+char* esock_decode_domain(ErlNifEnv* env,
+ ERL_NIF_TERM eDomain,
+ int* domain);
+extern
+char* esock_encode_domain(ErlNifEnv* env,
+ int domain,
+ ERL_NIF_TERM* eDomain);
+
+extern
+char* esock_decode_type(ErlNifEnv* env,
+ ERL_NIF_TERM eType,
+ int* type);
+extern
+char* esock_encode_type(ErlNifEnv* env,
+ int type,
+ ERL_NIF_TERM* eType);
+
+extern
+char* esock_decode_protocol(ErlNifEnv* env,
+ ERL_NIF_TERM eProtocol,
+ int* protocol);
+extern
+char* esock_encode_protocol(ErlNifEnv* env,
+ int type,
+ ERL_NIF_TERM* eProtocol);
+
+extern
+char* esock_decode_bufsz(ErlNifEnv* env,
+ ERL_NIF_TERM eVal,
+ size_t defSz,
+ size_t* sz);
+
+extern
+BOOLEAN_T esock_decode_string(ErlNifEnv* env,
+ const ERL_NIF_TERM eString,
+ char** stringP);
+
+extern
+BOOLEAN_T esock_extract_bool_from_map(ErlNifEnv* env,
+ ERL_NIF_TERM map,
+ ERL_NIF_TERM key,
+ BOOLEAN_T def);
+extern
+BOOLEAN_T esock_decode_bool(ERL_NIF_TERM val);
+extern
+ERL_NIF_TERM esock_encode_bool(BOOLEAN_T val);
+
+extern
+size_t esock_strnlen(const char *s, size_t maxlen);
+extern
+void esock_abort(const char* expr,
+ const char* func,
+ const char* file,
+ int line);
+
+extern
+ERL_NIF_TERM esock_make_ok2(ErlNifEnv* env, ERL_NIF_TERM any);
+extern
+ERL_NIF_TERM esock_make_ok3(ErlNifEnv* env, ERL_NIF_TERM val1, ERL_NIF_TERM val2);
+
+extern
+ERL_NIF_TERM esock_make_error(ErlNifEnv* env, ERL_NIF_TERM reason);
+extern
+ERL_NIF_TERM esock_make_error_str(ErlNifEnv* env, char* reason);
+extern
+ERL_NIF_TERM esock_make_error_errno(ErlNifEnv* env, int err);
+
+extern
+void esock_warning_msg(const char* format, ... );
+
+
+#endif // SOCKET_UTIL_H__
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-26 09:05:26 +0000