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/*
* %CopyrightBegin%
*
* Copyright Ericsson AB 1998-2016. 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%
*/
#ifdef __WIN32__
# include <winsock2.h>
# include <windows.h>
# include <winbase.h>
#elif VXWORKS
# include <sys/types.h>
# include <unistd.h>
# include <sysLib.h>
# include <tickLib.h>
#else /* unix */
# include <sys/types.h>
# include <unistd.h>
# include <sys/uio.h>
#endif
#include <string.h>
#include "eidef.h"
#include "eiext.h"
#include "eisend.h"
#include "putget.h"
#include "ei_connect_int.h"
#include "ei_internal.h"
#include "ei_trace.h"
#include "ei_portio.h"
#include "show_msg.h"
int ei_send_encoded_tmo(int fd, const erlang_pid *to,
char *msg, int msglen, unsigned ms)
{
char *s, header[1200]; /* see size calculation below */
erlang_trace *token = NULL;
int index = 5; /* reserve 5 bytes for control message */
int err;
ei_socket_callbacks *cbs;
void *ctx;
ssize_t len, tot_len;
unsigned tmo = ms == 0 ? EI_SCLBK_INF_TMO : ms;
err = EI_GET_CBS_CTX__(&cbs, &ctx, fd);
if (err) {
EI_CONN_SAVE_ERRNO__(err);
return ERL_ERROR;
}
/* are we tracing? */
/* check that he can receive trace tokens first */
if (ei_distversion(fd) > 0) token = ei_trace(0,NULL);
/* header = SEND, cookie, to max sizes: */
ei_encode_version(header,&index); /* 1 */
if (token) {
ei_encode_tuple_header(header,&index,4); /* 2 */
ei_encode_long(header,&index,ERL_SEND_TT); /* 2 */
} else {
ei_encode_tuple_header(header,&index,3);
ei_encode_long(header,&index,ERL_SEND);
}
ei_encode_atom(header,&index,ei_getfdcookie(fd)); /* 258 */
ei_encode_pid(header,&index,to); /* 268 */
if (token) ei_encode_trace(header,&index,token); /* 534 */
/* control message (precedes header actually) */
/* length = 1 ('p') + header len + message len */
s = header;
put32be(s, index + msglen - 4); /* 4 */
put8(s, ERL_PASS_THROUGH); /* 1 */
/*** sum: 1070 */
if (ei_tracelevel >= 4)
ei_show_sendmsg(stderr,header,msg);
#ifdef EI_HAVE_STRUCT_IOVEC__
if (ei_socket_callbacks_have_writev__(cbs)) {
struct iovec v[2];
v[0].iov_base = (char *)header;
v[0].iov_len = index;
v[1].iov_base = (char *)msg;
v[1].iov_len = msglen;
len = tot_len = (ssize_t) index+msglen;
err = ei_writev_fill_ctx_t__(cbs, ctx, v, 2, &len, tmo);
if (!err && len != tot_len)
err = EIO;
if (err) {
EI_CONN_SAVE_ERRNO__(err);
return -1;
}
return 0;
}
#endif /* EI_HAVE_STRUCT_IOVEC__ */
/* no writev() */
len = tot_len = (ssize_t) index;
err = ei_write_fill_ctx_t__(cbs, ctx, header, &len, tmo);
if (!err && len != tot_len)
err = EIO;
if (err) {
EI_CONN_SAVE_ERRNO__(err);
return -1;
}
len = tot_len = (ssize_t) msglen;
err = ei_write_fill_ctx_t__(cbs, ctx, msg, &len, tmo);
if (!err && len != tot_len)
err = EIO;
if (err) {
EI_CONN_SAVE_ERRNO__(err);
return -1;
}
return 0;
}
int ei_send_encoded(int fd, const erlang_pid *to, char *msg, int msglen)
{
return ei_send_encoded_tmo(fd, to, msg, msglen, 0);
}
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