diff options
Diffstat (limited to 'erts/doc')
| -rw-r--r-- | erts/doc/src/Makefile | 7 | ||||
| -rw-r--r-- | erts/doc/src/erl_dist_protocol.xml | 116 | ||||
| -rw-r--r-- | erts/doc/src/erl_ext_dist.xml | 9 | ||||
| -rw-r--r-- | erts/doc/src/erl_nif.xml | 56 | ||||
| -rw-r--r-- | erts/doc/src/net.xml | 126 | ||||
| -rw-r--r-- | erts/doc/src/part.xml | 1 | ||||
| -rw-r--r-- | erts/doc/src/ref_man.xml | 4 | ||||
| -rw-r--r-- | erts/doc/src/socket.xml | 645 | ||||
| -rw-r--r-- | erts/doc/src/socket_usage.xml | 773 | ||||
| -rw-r--r-- | erts/doc/src/specs.xml | 2 |
10 files changed, 1709 insertions, 30 deletions
diff --git a/erts/doc/src/Makefile b/erts/doc/src/Makefile index 40f74b78ff..06a8691c0e 100644 --- a/erts/doc/src/Makefile +++ b/erts/doc/src/Makefile @@ -55,7 +55,9 @@ XML_REF3_EFILES = \ persistent_term.xml \ atomics.xml \ counters.xml \ - zlib.xml + zlib.xml \ + socket.xml \ + net.xml XML_REF3_FILES = \ $(XML_REF3_EFILES) \ @@ -77,6 +79,7 @@ XML_CHAPTER_FILES = \ driver.xml \ absform.xml \ inet_cfg.xml \ + socket_usage.xml \ erl_ext_dist.xml \ erl_dist_protocol.xml \ communication.xml \ @@ -146,6 +149,8 @@ $(INFO_FILE): $(INFO_FILE_SRC) $(ERL_TOP)/make/$(TARGET)/otp.mk debug opt: +ldocs: xmllint local_docs + clean: rm -rf $(HTMLDIR)/* rm -rf $(XMLDIR) diff --git a/erts/doc/src/erl_dist_protocol.xml b/erts/doc/src/erl_dist_protocol.xml index c90c8f9521..185c75fe84 100644 --- a/erts/doc/src/erl_dist_protocol.xml +++ b/erts/doc/src/erl_dist_protocol.xml @@ -532,11 +532,7 @@ io:format("old/unused name ~ts at port ~p, fd = ~p ~n", <marker id="distribution_handshake"/> <title>Distribution Handshake</title> <p>This section describes the distribution handshake protocol introduced - in Erlang/OTP R6. This description was previously located in - <c>$ERL_TOP/lib/kernel/internal_doc/distribution_handshake.txt</c> and - has more or less been copied and "formatted" here. It has been almost - unchanged since 1999, but the handshake has not changed much since then - either.</p> + in Erlang/OTP R6. The handshake has remained almost the same since then.</p> <section> <title>General</title> @@ -847,6 +843,18 @@ DiB == gen_digest(ChA, ICA)? of the <c>SEND_TT</c> control message. </p> </item> + <tag><c>-define(DFLAG_BIG_SEQTRACE_LABELS, 16#100000).</c></tag> + <item> + <p>The node understands any term as the seqtrace label.</p> + </item> + <tag><c>-define(DFLAG_EXIT_PAYLOAD, 16#400000).</c></tag> + <item> + <p>Use the <c>PAYLOAD_EXIT</c>, <c>PAYLOAD_EXIT_TT</c>, + <c>PAYLOAD_EXIT2</c>, <c>PAYLOAD_EXIT2_TT</c> + and <c>PAYLOAD_MONITOR_P_EXIT</c> + <seealso marker="#control_message">control message</seealso>s + instead of the non-PAYLOAD variants.</p> + </item> </taglist> <p> There is also function <c>dist_util:strict_order_flags/0</c> @@ -859,7 +867,7 @@ DiB == gen_digest(ChA, ICA)? <section> <marker id="connected_nodes"/> <title>Protocol between Connected Nodes</title> - <p>As from ERTS 5.7.2 the runtime system passes a distribution flag + <p>Since ERTS 5.7.2 (OTP R13B) the runtime system passes a distribution flag in the handshake stage that enables the use of a <seealso marker="erl_ext_dist#distribution_header">distribution header </seealso> on all messages passed. Messages passed between nodes have in @@ -878,7 +886,7 @@ DiB == gen_digest(ChA, ICA)? <cell align="center"><c>ControlMessage</c></cell> <cell align="center"><c>Message</c></cell> </row> - <tcaption>Format of Messages Passed between Nodes (as from ERTS 5.7.2) + <tcaption>Format of Messages Passed between Nodes (as from ERTS 5.7.2 (OTP R13B)) </tcaption> </table> @@ -887,15 +895,23 @@ DiB == gen_digest(ChA, ICA)? <item> <p>Equal to d + n + m.</p> </item> + <tag><c>DistributionHeader</c></tag> + <item> + <p> + <seealso marker="erl_ext_dist#distribution_header">Distribution header + describing the atom cache and fragmented distribution messages. + </seealso> + </p> + </item> <tag><c>ControlMessage</c></tag> <item> <p>A tuple passed using the external format of Erlang.</p> </item> <tag><c>Message</c></tag> <item> - <p>The message sent to another node using the '!' (in external format). - Notice that <c>Message</c> is only passed in combination with a - <c>ControlMessage</c> encoding a send ('!').</p> + <p>The message sent to another node using the '!' + or the reason for a EXIT, EXIT2 or DOWN signal using + the external term format.</p> </item> </taglist> @@ -903,7 +919,7 @@ DiB == gen_digest(ChA, ICA)? number is omitted from the terms that follow a distribution header </seealso>.</p> - <p>Nodes with an ERTS version earlier than 5.7.2 does not pass the + <p>Nodes with an ERTS version earlier than 5.7.2 (OTP R13B) does not pass the distribution flag that enables the distribution header. Messages passed between nodes have in this case the following format:</p> @@ -920,7 +936,7 @@ DiB == gen_digest(ChA, ICA)? <cell align="center"><c>ControlMessage</c></cell> <cell align="center"><c>Message</c></cell> </row> - <tcaption>Format of Messages Passed between Nodes (before ERTS 5.7.2) + <tcaption>Format of Messages Passed between Nodes (before ERTS 5.7.2 (OTP R13B)) </tcaption> </table> @@ -963,6 +979,7 @@ DiB == gen_digest(ChA, ICA)? <tag><c>EXIT</c></tag> <item> <p><c>{3, FromPid, ToPid, Reason}</c></p> + <p>This signal is sent when a link has been broken</p> </item> <tag><c>UNLINK</c></tag> <item> @@ -985,6 +1002,7 @@ DiB == gen_digest(ChA, ICA)? <tag><c>EXIT2</c></tag> <item> <p><c>{8, FromPid, ToPid, Reason}</c></p> + <p>This signal is sent by a call to the erlang:exit/2 bif</p> </item> </taglist> </section> @@ -1007,7 +1025,7 @@ DiB == gen_digest(ChA, ICA)? <p><c>{16, FromPid, Unused, ToName, TraceToken}</c></p> <p>Followed by <c>Message</c>.</p> <p><c>Unused</c> is kept for backward compatibility.</p> - </item> + </item> <tag><c>EXIT2_TT</c></tag> <item> <p><c>{18, FromPid, ToPid, TraceToken, Reason}</c></p> @@ -1061,7 +1079,7 @@ DiB == gen_digest(ChA, ICA)? <p><c>{22, FromPid, ToPid}</c></p> <p>Followed by <c>Message</c>.</p> <p> - This control messages replace the <c>SEND</c> control + This control message replaces the <c>SEND</c> control message and will be sent when the distribution flag <seealso marker="erl_dist_protocol#dflags"><c>DFLAG_SEND_SENDER</c></seealso> has been negotiated in the connection setup handshake. @@ -1080,7 +1098,7 @@ DiB == gen_digest(ChA, ICA)? <p><c>{23, FromPid, ToPid, TraceToken}</c></p> <p>Followed by <c>Message</c>.</p> <p> - This control messages replace the <c>SEND_TT</c> control + This control message replaces the <c>SEND_TT</c> control message and will be sent when the distribution flag <seealso marker="erl_dist_protocol#dflags"><c>DFLAG_SEND_SENDER</c></seealso> has been negotiated in the connection setup handshake. @@ -1097,4 +1115,72 @@ DiB == gen_digest(ChA, ICA)? </taglist> </section> + <section> + <title>New Ctrlmessages for Erlang/OTP 22</title> + <note><p> + Messages encoded before the connection has + been set up may still use the non-PAYLOAD variant. + However, once a PAYLOAD control message has been sent, + no more non-PAYLOAD control messages will be sent in + the same direction on the connection. + </p></note> + <taglist> + <tag><c>PAYLOAD_EXIT</c></tag> + <item> + <p><c>{24, FromPid, ToPid}</c></p> + <p>Followed by <c>Reason</c>.</p> + <p> + This control message replaces the <c>EXIT</c> control + message and will be sent when the distribution flag + <seealso marker="erl_dist_protocol#dflags"><c>DFLAG_EXIT_PAYLOAD</c></seealso> + has been negotiated in the connection setup handshake. + </p> + </item> + <tag><c>PAYLOAD_EXIT_TT</c></tag> + <item> + <p><c>{25, FromPid, ToPid}</c></p> + <p>Followed by <c>Reason</c>.</p> + <p> + This control message replaces the <c>EXIT_TT</c> control + message and will be sent when the distribution flag + <seealso marker="erl_dist_protocol#dflags"><c>DFLAG_EXIT_PAYLOAD</c></seealso> + has been negotiated in the connection setup handshake. + </p> + </item> + <tag><c>PAYLOAD_EXIT2</c></tag> + <item> + <p><c>{26, FromPid, ToPid}</c></p> + <p>Followed by <c>Reason</c>.</p> + <p> + This control message replaces the <c>EXIT2</c> control + message and will be sent when the distribution flag + <seealso marker="erl_dist_protocol#dflags"><c>DFLAG_EXIT_PAYLOAD</c></seealso> + has been negotiated in the connection setup handshake. + </p> + </item> + <tag><c>PAYLOAD_EXIT2_TT</c></tag> + <item> + <p><c>{27, FromPid, ToPid}</c></p> + <p>Followed by <c>Reason</c>.</p> + <p> + This control message replaces the <c>EXIT2_TT</c> control + message and will be sent when the distribution flag + <seealso marker="erl_dist_protocol#dflags"><c>DFLAG_EXIT_PAYLOAD</c></seealso> + has been negotiated in the connection setup handshake. + </p> + </item> + <tag><c>PAYLOAD_MONITOR_P_EXIT</c></tag> + <item> + <p><c>{28, FromPid, ToPid, Ref}</c></p> + <p>Followed by <c>Reason</c>.</p> + <p> + This control message replaces the <c>MONITOR_P_EXIT</c> control + message and will be sent when the distribution flag + <seealso marker="erl_dist_protocol#dflags"><c>DFLAG_EXIT_PAYLOAD</c></seealso> + has been negotiated in the connection setup handshake. + </p> + </item> + </taglist> + </section> + </chapter> diff --git a/erts/doc/src/erl_ext_dist.xml b/erts/doc/src/erl_ext_dist.xml index b7090d0472..29c6694a6b 100644 --- a/erts/doc/src/erl_ext_dist.xml +++ b/erts/doc/src/erl_ext_dist.xml @@ -136,16 +136,9 @@ </note> </section> - <section> + <section> <title>Distribution Header</title> <p> - <marker id="distribution_header"/> - As from ERTS 5.7.2 the old atom cache protocol was - dropped and a new one was introduced. This protocol - introduced the distribution header. Nodes with an ERTS version - earlier than 5.7.2 can still communicate with new nodes, - but no distribution header and no atom cache are used.</p> - <p> The distribution header only contains an atom cache reference section, but can in the future contain more information. The distribution header precedes one or more Erlang diff --git a/erts/doc/src/erl_nif.xml b/erts/doc/src/erl_nif.xml index d58ebd3171..cc7452bab5 100644 --- a/erts/doc/src/erl_nif.xml +++ b/erts/doc/src/erl_nif.xml @@ -783,14 +783,16 @@ typedef struct { <p>A process identifier (pid). In contrast to pid terms (instances of <c>ERL_NIF_TERM</c>), <c>ErlNifPid</c>s are self-contained and not bound to any <seealso marker="#ErlNifEnv">environment</seealso>. - <c>ErlNifPid</c> is an opaque type.</p> + <c>ErlNifPid</c> is an opaque type. It can be copied, moved + in memory, forgotten, and so on.</p> </item> <tag><marker id="ErlNifPort"/><c>ErlNifPort</c></tag> <item> <p>A port identifier. In contrast to port ID terms (instances of <c>ERL_NIF_TERM</c>), <c>ErlNifPort</c>s are self-contained and not bound to any <seealso marker="#ErlNifEnv">environment</seealso>. - <c>ErlNifPort</c> is an opaque type.</p> + <c>ErlNifPort</c> is an opaque type. It can be copied, moved + in memory, forgotten, and so on.</p> </item> <tag><marker id="ErlNifResourceType"/><c>ErlNifResourceType</c></tag> <item> @@ -1088,6 +1090,20 @@ typedef struct { </func> <func> + <name since="OTP @OTP-15011@"><ret>int</ret> + <nametext>enif_compare_pids(const ErlNifPid *pid1, const ErlNifPid *pid2) + </nametext></name> + <fsummary>Compare two pids.</fsummary> + <desc> + <p>Compares two <seealso marker="#ErlNifPid"><c>ErlNifPid</c> + </seealso>s according to term order.</p> + <p>Returns <c>0</c> if <c>pid1</c> and <c>pid2</c> are equal, + < <c>0</c> if <c>pid1</c> < <c>pid2</c>, and + > <c>0</c> if <c>pid1</c> > <c>pid2</c>.</p> + </desc> + </func> + + <func> <name since="OTP R13B04"><ret>void</ret> <nametext>enif_cond_broadcast(ErlNifCond *cnd)</nametext></name> <fsummary></fsummary> @@ -1392,6 +1408,9 @@ enif_free_iovec(iovec);]]></code> initializes the pid variable <c>*pid</c> from it and returns <c>true</c>. Otherwise returns <c>false</c>. No check is done to see if the process is alive.</p> + <note><p><c>enif_get_local_pid</c> will return false if argument + <c>term</c> is the atom <seealso marker="#enif_make_pid"> + <c>undefined</c></seealso>.</p></note> </desc> </func> @@ -1871,6 +1890,17 @@ enif_inspect_iovec(env, max_elements, term, &tail, &iovec); </func> <func> + <name since="OTP @OTP-15011@"><ret>int</ret> + <nametext>enif_is_pid_undefined(const ErlNifPid* pid)</nametext></name> + <fsummary>Determine if pid is undefined.</fsummary> + <desc> + <p>Returns <c>true</c> if <c>pid</c> has been set as undefined by + <seealso marker="#enif_set_pid_undefined"><c>enif_set_pid_undefined</c> + </seealso>.</p> + </desc> + </func> + + <func> <name since="OTP R13B04"><ret>int</ret> <nametext>enif_is_port(ErlNifEnv* env, ERL_NIF_TERM term)</nametext> </name> @@ -2259,7 +2289,8 @@ enif_inspect_iovec(env, max_elements, term, &tail, &iovec); </name> <fsummary>Make a pid term.</fsummary> <desc> - <p>Makes a pid term from <c>*pid</c>.</p> + <p>Makes a pid term or the atom <seealso marker="#enif_set_pid_undefined"> + <c>undefined</c></seealso> from <c>*pid</c>.</p> </desc> </func> @@ -2625,7 +2656,9 @@ enif_map_iterator_destroy(env, &iter);</code> <p>Argument <c>caller_env</c> is the environment of the calling process or callback. Must only be NULL if calling from a custom thread.</p> <p>Returns <c>0</c> on success, < 0 if no <c>down</c> callback is - provided, and > 0 if the process is no longer alive.</p> + provided, and > 0 if the process is no longer alive or if + <c>target_pid</c> is <seealso marker="#enif_set_pid_undefined"> + undefined</seealso>.</p> <p>This function is only thread-safe when the emulator with SMP support is used. It can only be used in a non-SMP emulator from a NIF-calling thread.</p> @@ -3080,7 +3113,9 @@ enif_map_iterator_destroy(env, &iter);</code> <seealso marker="#enif_select_write"><c>enif_select_write</c></seealso> introduced in erts-11.0 (OTP-22.0).</p> </note> - <p>Argument <c>pid</c> may be <c>NULL</c> to indicate the calling process.</p> + <p>Argument <c>pid</c> may be <c>NULL</c> to indicate the calling + process. It must not be set as <seealso marker="#enif_set_pid_undefined"> + undefined</seealso>.</p> <p>Argument <c>obj</c> is a resource object obtained from <seealso marker="#enif_alloc_resource"><c>enif_alloc_resource</c></seealso>. The purpose of the resource objects is as a container of the event object @@ -3271,6 +3306,17 @@ if (retval & ERL_NIF_SELECT_STOP_CALLED) { </func> <func> + <name since="OTP @OTP-15011@"><ret>void</ret> + <nametext>enif_set_pid_undefined(ErlNifPid* pid)</nametext></name> + <fsummary>Set pid as undefined.</fsummary> + <desc> + <p>Sets an <seealso marker="#ErlNifPid"><c>ErlNifPid</c></seealso> + variable as undefined. See <seealso marker="#enif_is_pid_undefined"> + <c>enif_is_pid_undefined</c></seealso>.</p> + </desc> + </func> + + <func> <name since="OTP R13B04"><ret>unsigned</ret> <nametext>enif_sizeof_resource(void* obj)</nametext></name> <fsummary>Get the byte size of a resource object.</fsummary> diff --git a/erts/doc/src/net.xml b/erts/doc/src/net.xml new file mode 100644 index 0000000000..bd85594c98 --- /dev/null +++ b/erts/doc/src/net.xml @@ -0,0 +1,126 @@ +<?xml version="1.0" encoding="utf-8" ?> +<!DOCTYPE erlref SYSTEM "erlref.dtd"> + +<erlref> + <header> + <copyright> + <year>2018</year><year>2018</year> + <holder>Ericsson AB. All Rights Reserved.</holder> + </copyright> + <legalnotice> + 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. + + </legalnotice> + + <title>net</title> + <prepared></prepared> + <docno></docno> + <date></date> + <rev></rev> + <file>net.xml</file> + </header> + <module since="OTP @OTP-14831@">net</module> + <modulesummary>Network interface.</modulesummary> + <description> + <p>This module provides an API for the network interface.</p> + </description> + + <datatypes> + <datatype> + <name name="address_info"/> + </datatype> + <datatype> + <name name="name_info"/> + </datatype> + <datatype> + <name name="name_info_flags"/> + </datatype> + <datatype> + <name name="name_info_flag"/> + </datatype> + <datatype> + <name name="name_info_flag_ext"/> + </datatype> + <datatype> + <name name="network_interface_name"/> + </datatype> + <datatype> + <name name="network_interface_index"/> + </datatype> + </datatypes> + + <funcs> + <func> + <name name="gethostname" arity="0"/> + <fsummary>Get hostname.</fsummary> + <desc> + <p>Returns the name of the current host.</p> + </desc> + </func> + + <func> + <name name="getnameinfo" arity="1" since="OTP @OTP-14831@"/> + <name name="getnameinfo" arity="2" since="OTP @OTP-14831@"/> + <fsummary>Address-to-name transaltion.</fsummary> + <desc> + <p>Address-to-name translation in a protocol-independant manner.</p> + <p>This function is the inverse of + <seealso marker="#getaddrinfo/1"><c>getaddrinfo</c></seealso>. + It converts a socket address to a corresponding host and service.</p> + </desc> + </func> + + <func> + <name name="getaddrinfo" arity="1" since="OTP @OTP-14831@"/> + <name name="getaddrinfo" arity="2" clause_i="1" since="OTP @OTP-14831@"/> + <name name="getaddrinfo" arity="2" clause_i="2" since="OTP @OTP-14831@"/> + <name name="getaddrinfo" arity="2" clause_i="3" since="OTP @OTP-14831@"/> + <fsummary>Network address and service transation.</fsummary> + <desc> + <p>Network address and service translation.</p> + <p>This function is the inverse of + <seealso marker="#getnameinfo/1"><c>getnameinfo</c></seealso>. + It converts host and service to a corresponding socket address.</p> + <p>One of the <c>Host</c> and <c>Service</c> may be <c>undefined</c> + but <em>not</em> both.</p> + </desc> + </func> + + <func> + <name name="if_name2index" arity="1" since="OTP @OTP-14831@"/> + <fsummary>Mappings between network interface names and indexes.</fsummary> + <desc> + <p>Mappings between network interface names and indexes.</p> + </desc> + </func> + + <func> + <name name="if_index2name" arity="1" since="OTP @OTP-14831@"/> + <fsummary>Mappings between network interface index and names.</fsummary> + <desc> + <p>Mappings between network interface index and names.</p> + </desc> + </func> + + <func> + <name name="if_names" arity="0" since="OTP @OTP-14831@"/> + <fsummary>Get network interface names and indexes.</fsummary> + <desc> + <p>Get network interface names and indexes.</p> + </desc> + </func> + + </funcs> + +</erlref> + diff --git a/erts/doc/src/part.xml b/erts/doc/src/part.xml index 05e9a24af8..f0b8a00b90 100644 --- a/erts/doc/src/part.xml +++ b/erts/doc/src/part.xml @@ -42,6 +42,7 @@ <xi:include href="tty.xml"/> <xi:include href="driver.xml"/> <xi:include href="inet_cfg.xml"/> + <xi:include href="socket_usage.xml"/> <xi:include href="erl_ext_dist.xml"/> <xi:include href="erl_dist_protocol.xml"/> </part> diff --git a/erts/doc/src/ref_man.xml b/erts/doc/src/ref_man.xml index 811d299f06..80cdcf9145 100644 --- a/erts/doc/src/ref_man.xml +++ b/erts/doc/src/ref_man.xml @@ -4,7 +4,7 @@ <application xmlns:xi="http://www.w3.org/2001/XInclude"> <header> <copyright> - <year>1996</year><year>2016</year> + <year>1996</year><year>2018</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> @@ -46,8 +46,10 @@ <xi:include href="erts_alloc.xml"/> <xi:include href="escript.xml"/> <xi:include href="init.xml"/> + <xi:include href="net.xml"/> <xi:include href="persistent_term.xml"/> <xi:include href="run_erl.xml"/> + <xi:include href="socket.xml"/> <xi:include href="start.xml"/> <xi:include href="start_erl.xml"/> <xi:include href="werl.xml"/> diff --git a/erts/doc/src/socket.xml b/erts/doc/src/socket.xml new file mode 100644 index 0000000000..caf7058b34 --- /dev/null +++ b/erts/doc/src/socket.xml @@ -0,0 +1,645 @@ +<?xml version="1.0" encoding="utf-8" ?> +<!DOCTYPE erlref SYSTEM "erlref.dtd"> + +<erlref> + <header> + <copyright> + <year>2018</year><year>2019</year> + <holder>Ericsson AB. All Rights Reserved.</holder> + </copyright> + <legalnotice> + 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. + + </legalnotice> + + <title>socket</title> + <prepared></prepared> + <docno></docno> + <date></date> + <rev></rev> + <file>socket.xml</file> + </header> + <module since="OTP @OTP-14831@">socket</module> + <modulesummary>Socket interface.</modulesummary> + <description> + <p>This module provides an API for the socket interface. + It is used to create, delete and manipulate sockets, + send and receive data.</p> + <p>The idea is that it shall be as "close as possible" to the OS + level socket interface. The only significant addition is that some of + the functions, + e.g. <seealso marker="#recv/3"><c>recv/3</c></seealso>, + has a timeout argument. </p> + </description> + + <datatypes> + <datatype> + <name name="domain"/> + </datatype> + <datatype> + <name name="type"/> + </datatype> + <datatype> + <name name="protocol"/> + </datatype> + <datatype> + <name>socket()</name> + <desc><p>As returned by + <seealso marker="#open/2"><c>open/2,3,4</c></seealso> and + <seealso marker="#accept/1"><c>accept/1,2</c></seealso>.</p> + </desc> + </datatype> + <datatype> + <name name="ip4_address"/> + </datatype> + <datatype> + <name name="ip6_address"/> + </datatype> + <datatype> + <name name="ip_address"/> + </datatype> + <datatype> + <name name="sockaddr"/> + </datatype> + <datatype> + <name name="sockaddr_in4"/> + </datatype> + <datatype> + <name name="sockaddr_in6"/> + </datatype> + <datatype> + <name name="sockaddr_un"/> + </datatype> + <datatype> + <name name="port_number"/> + </datatype> + <datatype> + <name name="in6_flow_info"/> + </datatype> + <datatype> + <name name="in6_scope_id"/> + </datatype> + <datatype> + <name name="accept_flags"/> + </datatype> + <datatype> + <name name="accept_flag"/> + </datatype> + <datatype> + <name name="send_flags"/> + </datatype> + <datatype> + <name name="send_flag"/> + </datatype> + <datatype> + <name name="recv_flags"/> + </datatype> + <datatype> + <name name="recv_flag"/> + </datatype> + <datatype> + <name name="shutdown_how"/> + </datatype> + <datatype> + <name name="sockopt_level"/> + </datatype> + <datatype> + <name name="otp_socket_option"/> + </datatype> + <datatype> + <name name="socket_option"/> + </datatype> + <datatype> + <name name="ip_socket_option"/> + </datatype> + <datatype> + <name name="ipv6_socket_option"/> + </datatype> + <datatype> + <name name="tcp_socket_option"/> + </datatype> + <datatype> + <name name="udp_socket_option"/> + </datatype> + <datatype> + <name name="sctp_socket_option"/> + </datatype> + <datatype> + <name name="timeval"/> + </datatype> + <datatype> + <name name="ip_tos"/> + </datatype> + <datatype> + <name name="ip_mreq"/> + </datatype> + <datatype> + <name name="ip_mreq_source"/> + </datatype> + <datatype> + <name name="ip_pmtudisc"/> + </datatype> + <datatype> + <name name="ip_msfilter_mode"/> + </datatype> + <datatype> + <name name="ip_msfilter"/> + </datatype> + <datatype> + <name name="ip_pktinfo"/> + </datatype> + <datatype> + <name name="ipv6_mreq"/> + </datatype> + <datatype> + <name name="ipv6_pmtudisc"/> + </datatype> + <datatype> + <name name="ipv6_pktinfo"/> + </datatype> + <datatype> + <name name="sctp_assoc_id"/> + </datatype> + <datatype> + <name name="sctp_sndrcvinfo"/> + </datatype> + <datatype> + <name name="sctp_event_subscribe"/> + </datatype> + <datatype> + <name name="sctp_assocparams"/> + </datatype> + <datatype> + <name name="sctp_initmsg"/> + </datatype> + <datatype> + <name name="sctp_rtoinfo"/> + </datatype> + <datatype> + <name name="msghdr_flag"/> + </datatype> + <datatype> + <name name="msghdr_flags"/> + </datatype> + <datatype> + <name name="msghdr"/> + </datatype> + <datatype> + <name name="cmsghdr_level"/> + </datatype> + <datatype> + <name name="cmsghdr_type"/> + </datatype> + <!-- + <datatype> + <name name="cmsghdr_data"/> + </datatype> + --> + <datatype> + <name name="cmsghdr_recv"/> + </datatype> + <datatype> + <name name="cmsghdr_send"/> + </datatype> + <datatype> + <name name="uint8"/> + </datatype> + <datatype> + <name name="uint16"/> + </datatype> + <datatype> + <name name="uint20"/> + </datatype> + <datatype> + <name name="uint32"/> + </datatype> + <datatype> + <name name="int32"/> + </datatype> + <datatype> + <name name="supports_options_socket"/> + </datatype> + <datatype> + <name name="supports_options_ip"/> + </datatype> + <datatype> + <name name="supports_options_ipv6"/> + </datatype> + <datatype> + <name name="supports_options_tcp"/> + </datatype> + <datatype> + <name name="supports_options_udp"/> + </datatype> + <datatype> + <name name="supports_options_sctp"/> + </datatype> + <datatype> + <name name="supports_options"/> + </datatype> + </datatypes> + + <funcs> + <func> + <name name="accept" arity="1" since="OTP @OTP-14831@"/> + <name name="accept" arity="2" since="OTP @OTP-14831@"/> + <fsummary>Accept a connection on a socket.</fsummary> + <desc> + <p>Accept a connection on a socket.</p> + <p>This call is used with connection-based socket types + (<c>stream</c> or <c>seqpacket</c>). It extracs the first pending + connection request for the listen socket and returns the (newly) + connected socket.</p> + </desc> + </func> + + <func> + <name name="bind" arity="2" since="OTP @OTP-14831@"/> + <fsummary>Bind a name to a socket.</fsummary> + <desc> + <p>Bind a name to a socket.</p> + <p>When a socket is created + (with <seealso marker="#open/2"><c>open</c></seealso>), + it has no address assigned to it. <c>bind</c> assigns the + address specified by the <c>Addr</c> argument.</p> + <p>The rules used for name binding vary between domains.</p> + </desc> + </func> + + <func> + <name name="close" arity="1" since="OTP @OTP-14831@"/> + <fsummary>Close a socket.</fsummary> + <desc> + <p>Closes the socket.</p> + + <note> + <p>Note that for e.g. <c>protocol</c> = <c>tcp</c>, most implementations + doing a close does not guarantee that any data sent is delivered to + the recipient before the close is detected at the remote side. </p> + <p>One way to handle this is to use the + <seealso marker="#shutdown/2"><c>shutdown</c></seealso> + function + (<c>socket:shutdown(Socket, write)</c>) to signal that no more data is + to be sent and then wait for the read side of the socket to be closed.</p> + </note> + </desc> + </func> + + <func> + <name name="connect" arity="2" since="OTP @OTP-14831@"/> + <name name="connect" arity="3" since="OTP @OTP-14831@"/> + <fsummary>Initiate a connection on a socket.</fsummary> + <desc> + <p>This function connects the socket to the address + specied by the <c>SockAddr</c> argument.</p> + </desc> + </func> + + <func> + <name name="getopt" arity="3" clause_i="1" since="OTP @OTP-14831@"/> + <name name="getopt" arity="3" clause_i="2" since="OTP @OTP-14831@"/> + <name name="getopt" arity="3" clause_i="3" since="OTP @OTP-14831@"/> + <name name="getopt" arity="3" clause_i="4" since="OTP @OTP-14831@"/> + <name name="getopt" arity="3" clause_i="5" since="OTP @OTP-14831@"/> + <name name="getopt" arity="3" clause_i="6" since="OTP @OTP-14831@"/> + <name name="getopt" arity="3" clause_i="7" since="OTP @OTP-14831@"/> + <fsummary>Get an option on a socket.</fsummary> + <desc> + <p>Get an option on a socket.</p> + <p>What properties are valid depend both on <c>Level</c> and + on what kind of socket it is (<c>domain</c>, <c>type</c> and + <c>protocol</c>).</p> + + <p>See the + <seealso marker="socket_usage#socket_options">socket options</seealso> + chapter of the users guide for more info. </p> + + <note><p>Not all options are valid on all platforms. That is, + even if "we" support an option, that does not mean that the + underlying OS does.</p></note> + + </desc> + </func> + + <func> + <name name="getopt" arity="3" clause_i="8" since="OTP @OTP-14831@"/> + <fsummary>Get an option on a socket.</fsummary> + <desc> + <p>Get an option on a socket.</p> + <p>What properties are valid depend both on <c>Level</c> and + on what kind of socket it is (<c>domain</c>, <c>type</c> and + <c>protocol</c>).</p> + <p>When specifying <c>Level</c> as an integer, and therefor + using "native mode", it is *currently* up to the caller to + know how to interpret the result.</p> + + <p>See the + <seealso marker="socket_usage#socket_options">socket options</seealso> + chapter of the users guide for more info. </p> + + <note><p>Not all options are valid on all platforms. That is, + even if "we" support an option, that does not mean that the + underlying OS does.</p></note> + </desc> + </func> + + <func> + <name name="listen" arity="1" since="OTP @OTP-14831@"/> + <name name="listen" arity="2" since="OTP @OTP-14831@"/> + <fsummary>Listen for connections on a socket.</fsummary> + <desc> + <p>Listen for connections on a socket.</p> + </desc> + </func> + + <func> + <name name="open" arity="2" since="OTP @OTP-14831@"/> + <name name="open" arity="3" since="OTP @OTP-14831@"/> + <name name="open" arity="4" since="OTP @OTP-14831@"/> + <fsummary>Create an endpoint for communication.</fsummary> + <desc> + <p>Creates an endpoint (socket) for communication.</p> + <p>For some <c>types</c> there is a default protocol, which will + be used if no protocol is specified: </p> + + <list> + <item><p><c>stream</c>: <c>tcp</c></p></item> + <item><p><c>dgram</c>: <c>udp</c></p></item> + <item><p><c>seqpacket</c>: <c>sctp</c></p></item> + </list> + + <p>The <c>Extra</c> argument is intended for "obscure" options. + Currently the only supported option is <c>netns</c>, which + is only supported on the linux platform.</p> + </desc> + </func> + + <func> + <name name="peername" arity="1" since="OTP @OTP-14831@"/> + <fsummary>Get name of connected socket peer.</fsummary> + <desc> + <p>Returns the address of the peer connected to the socket.</p> + </desc> + </func> + + <func> + <name name="recv" arity="1" since="OTP @OTP-14831@"/> + <name name="recv" arity="2" since="OTP @OTP-14831@"/> + <name name="recv" arity="3" clause_i="1" since="OTP @OTP-14831@"/> + <name name="recv" arity="3" clause_i="2" since="OTP @OTP-14831@"/> + <name name="recv" arity="4" since="OTP @OTP-14831@"/> + <fsummary>Receive a message from a socket.</fsummary> + <desc> + <p>Receive a message from a socket.</p> + <p>There is a special case for the argument <c>Length</c>. + If it is set to zero (0), it means "give me everything you + currently have".</p> + </desc> + </func> + + <func> + <name name="recvfrom" arity="1" since="OTP @OTP-14831@"/> + <name name="recvfrom" arity="2" since="OTP @OTP-14831@"/> + <name name="recvfrom" arity="3" clause_i="1" since="OTP @OTP-14831@"/> + <name name="recvfrom" arity="3" clause_i="2" since="OTP @OTP-14831@"/> + <name name="recvfrom" arity="3" clause_i="3" since="OTP @OTP-14831@"/> + <name name="recvfrom" arity="4" since="OTP @OTP-14831@"/> + <fsummary>Receive a message from a socket.</fsummary> + <desc> + <p>Receive a message from a socket.</p> + <p>This function reads "messages", which means that regardless of + how much we want to read, it returns when we get a message.</p> + <p>The <c>BufSz</c> argument basically defines the size of the + receive buffer. By setting the value to zero (0), the configured + size (setopt with <c>Level</c> = <c>otp</c> and <c>Key</c> = <c>rcvbuf</c>) + is used.</p> + <p>It may be impossible to know what (buffer) size is appropriate + "in advance", and in those cases it may be convenient to use the + (recv) 'peek' flag. When this flag is provided, the message is *not* + "consumed" from the underlying buffers, so another recvfrom call + is needed, possibly with a then adjusted buffer size.</p> + </desc> + </func> + + <func> + <name name="recvmsg" arity="1" since="OTP @OTP-14831@"/> + <name name="recvmsg" arity="2" clause_i="1" since="OTP @OTP-14831@"/> + <name name="recvmsg" arity="2" clause_i="2" since="OTP @OTP-14831@"/> + <name name="recvmsg" arity="3" clause_i="1" since="OTP @OTP-14831@"/> + <name name="recvmsg" arity="3" clause_i="2" since="OTP @OTP-14831@"/> + <name name="recvmsg" arity="5" since="OTP @OTP-14831@"/> + <fsummary>Receive a message from a socket.</fsummary> + <desc> + <p>Receive a message from a socket.</p> + <p>This function reads "messages", which means that regardless of + how much we want to read, it returns when we get a message.</p> + <p>The message will be delivered in the form of a <c>msghdr()</c>, + which may contain the source address (if socket not connected), + a list of <c>cmsghdr_recv()</c> (depends on what socket options have + been set and what the protocol and platform supports) and + also a set of flags, providing further info about the read. </p> + + <p>The <c>BufSz</c> argument basically defines the size of the + receive buffer. By setting the value to zero (0), the configured + size (setopt with <c>Level</c> = <c>otp</c> and <c>Key</c> = <c>rcvbuf</c>) + is used.</p> + + <p>The <c>CtrlSz</c> argument basically defines the size of the + receive buffer for the control messages. + By setting the value to zero (0), the configured size (setopt + with <c>Level</c> = <c>otp</c>) is used.</p> + + <p>It may be impossible to know what (buffer) size is appropriate + "in advance", and in those cases it may be convenient to use the + (recv) 'peek' flag. When this flag is provided, the message is *not* + "consumed" from the underlying buffers, so another recvmsg call + is needed, possibly with a then adjusted buffer size.</p> + </desc> + </func> + + <func> + <name name="send" arity="2" since="OTP @OTP-14831@"/> + <name name="send" arity="3" clause_i="1" since="OTP @OTP-14831@"/> + <name name="send" arity="3" clause_i="2" since="OTP @OTP-14831@"/> + <name name="send" arity="4" since="OTP @OTP-14831@"/> + <fsummary>Send a message on a socket.</fsummary> + <desc> + <p>Send a message on a connected socket.</p> + </desc> + </func> + + <func> + <name name="sendmsg" arity="2" since="OTP @OTP-14831@"/> + <name name="sendmsg" arity="3" clause_i="1" since="OTP @OTP-14831@"/> + <name name="sendmsg" arity="3" clause_i="2" since="OTP @OTP-14831@"/> + <name name="sendmsg" arity="4" since="OTP @OTP-14831@"/> + <fsummary>Send a message on a socket.</fsummary> + <desc> + <p>Send a message on a socket. The destination, if needed + (socket <em>not</em> connected) is provided in the <c>MsgHdr</c>, + which also contains the message to send, + The <c>MsgHdr</c> may also contain an list of optional <c>cmsghdr_send()</c> + (depends on what the protocol and platform supports).</p> + + <p>Unlike the <seealso marker="#send/2"><c>send</c></seealso> function, + this one sends <em>one message</em>. + This means that if, for whatever reason, its not possible to send the + message in one go, the function will instead return with the + <em>remaining</em> data (<c>{ok, Remaining}</c>). Thereby leaving it + up to the caller to decide what to do (retry with the remaining data + of give up). </p> + + </desc> + </func> + + <func> + <name name="sendto" arity="3" since="OTP @OTP-14831@"/> + <name name="sendto" arity="4" clause_i="1" since="OTP @OTP-14831@"/> + <name name="sendto" arity="4" clause_i="2" since="OTP @OTP-14831@"/> + <name name="sendto" arity="5" since="OTP @OTP-14831@"/> + <fsummary>Send a message on a socket.</fsummary> + <desc> + <p>Send a message on a socket, to the specified destination.</p> + </desc> + </func> + + <func> + <name name="setopt" arity="4" clause_i="1" since="OTP @OTP-14831@"/> + <name name="setopt" arity="4" clause_i="2" since="OTP @OTP-14831@"/> + <name name="setopt" arity="4" clause_i="3" since="OTP @OTP-14831@"/> + <name name="setopt" arity="4" clause_i="4" since="OTP @OTP-14831@"/> + <name name="setopt" arity="4" clause_i="5" since="OTP @OTP-14831@"/> + <name name="setopt" arity="4" clause_i="6" since="OTP @OTP-14831@"/> + <name name="setopt" arity="4" clause_i="7" since="OTP @OTP-14831@"/> + <fsummary>Set options on a socket.</fsummary> + <desc> + <p>Set options on a socket.</p> + <p>What properties are valid depend both on <c>Level</c> and on + what kind of socket it is (<c>domain</c>, <c>type</c> and + <c>protocol</c>).</p> + + <p>See the + <seealso marker="socket_usage#socket_options">socket options</seealso> + chapter of the users guide for more info. </p> + + <note><p>Not all options are valid on all platforms. That is, + even if "we" support an option, that does not mean that the + underlying OS does.</p></note> + + <note><p>Sockets are set 'non-blocking' when created, so this option + is *not* available (as it would adversely effect the Erlang VM + to set a socket 'blocking').</p></note> + </desc> + </func> + + <func> + <name name="setopt" arity="4" clause_i="8" since="OTP @OTP-14831@"/> + <fsummary>Set options on a socket.</fsummary> + <desc> + <p>Set options on a socket.</p> + <p>What properties are valid depend both on <c>Level</c> and on + what kind of socket it is (<c>domain</c>, <c>type</c> and + <c>protocol</c>).</p> + + <p>See the + <seealso marker="socket_usage#socket_options">socket options</seealso> + chapter of the users guide for more info. </p> + + <note><p>Not all options are valid on all platforms. That is, + even if "we" support an option, that does not mean that the + underlying OS does.</p></note> + + <note><p>Sockets are set 'non-blocking' when created, so this option + is *not* available (as it would adversely effect the Erlang VM + to set a socket 'blocking').</p></note> + </desc> + </func> + + <func> + <name name="shutdown" arity="2" since="OTP @OTP-14831@"/> + <fsummary>Shut down part of a full-duplex connection.</fsummary> + <desc> + <p>Shut down all or part of a full-duplex connection.</p> + </desc> + </func> + + <func> + <name name="sockname" arity="1" since="OTP @OTP-14831@"/> + <fsummary>Get socket name.</fsummary> + <desc> + <p>Returns the current address to which the socket is bound.</p> + </desc> + </func> + + <func> + <name name="supports" arity="0" since="OTP @OTP-14831@"/> + <name name="supports" arity="1" clause_i="1" since="OTP @OTP-14831@"/> + <name name="supports" arity="1" clause_i="2" since="OTP @OTP-14831@"/> + <name name="supports" arity="1" clause_i="3" since="OTP @OTP-14831@"/> + <name name="supports" arity="1" clause_i="4" since="OTP @OTP-14831@"/> + <name name="supports" arity="2" clause_i="1" since="OTP @OTP-14831@"/> + <name name="supports" arity="2" clause_i="2" since="OTP @OTP-14831@"/> + <name name="supports" arity="2" clause_i="3" since="OTP @OTP-14831@"/> + <name name="supports" arity="2" clause_i="4" since="OTP @OTP-14831@"/> + <name name="supports" arity="2" clause_i="5" since="OTP @OTP-14831@"/> + <name name="supports" arity="2" clause_i="6" since="OTP @OTP-14831@"/> + <name name="supports" arity="2" clause_i="7" since="OTP @OTP-14831@"/> + <name name="supports" arity="3" clause_i="1" since="OTP @OTP-14831@"/> + <name name="supports" arity="3" clause_i="2" since="OTP @OTP-14831@"/> + <name name="supports" arity="3" clause_i="3" since="OTP @OTP-14831@"/> + <name name="supports" arity="3" clause_i="4" since="OTP @OTP-14831@"/> + <name name="supports" arity="3" clause_i="5" since="OTP @OTP-14831@"/> + <name name="supports" arity="3" clause_i="6" since="OTP @OTP-14831@"/> + <name name="supports" arity="3" clause_i="7" since="OTP @OTP-14831@"/> + <fsummary>Report info about what the platform supports.</fsummary> + <desc> + <p>This function intends to retreive information about what the + platform supports. Such as if SCTP is supported. Or which socket + options are supported. </p> + </desc> + </func> + + </funcs> + <section> + <title>Examples</title> + <marker id="examples"></marker> + <code type="none"> +client(Addr, SAddr, SPort) -> + {ok, Sock} = socket:open(inet, stream, tcp), + {ok, _} = socket:bind(Sock, #{family => inet, + addr => Addr}), + ok = socket:connect(Sock, #{family => inet, + addr => SAddr, + port => SPort}), + Msg = list_to_binary("hello"), + ok = socket:send(Sock, Msg), + ok = socket:shutdown(Sock, write), + {ok, Msg} = socket:recv(Sock), + ok = socket:close(Sock). + +server(Addr, Port) -> + {ok, LSock} = socket:open(inet, stream, tcp), + {ok, _} = socket:bind(LSock, #{family => inet, + port => Port, + addr => Addr}), + ok = socket:listen(LSock), + {ok, Sock} = socket:accept(LSock), + {ok, Msg} = socket:recv(Sock), + ok = socket:send(Sock, Msg), + ok = socket:shutdown(Sock, write), + ok = socket:close(Sock), + ok = socket:close(LSock). + </code> + </section> +</erlref> + diff --git a/erts/doc/src/socket_usage.xml b/erts/doc/src/socket_usage.xml new file mode 100644 index 0000000000..e0f006e618 --- /dev/null +++ b/erts/doc/src/socket_usage.xml @@ -0,0 +1,773 @@ +<?xml version="1.0" encoding="utf-8" ?> +<!DOCTYPE chapter SYSTEM "chapter.dtd"> + +<chapter> + <header> + <copyright> + <year>2018</year><year>2019</year> + <holder>Ericsson AB. All Rights Reserved.</holder> + </copyright> + <legalnotice> + 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. + + </legalnotice> + + <title>Socket Usage</title> + <prepared>Micael Karlberg</prepared> + <docno></docno> + <date>2018-07-17</date> + <rev>PA1</rev> + <file>socket_usage.xml</file> + </header> + + <section> + <title>Introduction</title> + <p>The socket interface (module) is basically an "thin" layer on top of + the OS socket interface. It is assumed that, unless you have special needs, + gen_[tcp|udp|sctp] should be sufficent. </p> + <p>Note that just because we have a documented and described option, + it does <em>not</em> mean that the OS supports it. So its recommended + that the user reads the platform specific documentation for the + option used. </p> + </section> + + <section> + <marker id="socket_options"></marker> + <title>Socket Options</title> + + <p>Options for level <c>otp</c>: </p> + <table> + <row> + <cell><em>Option Name</em></cell> + <cell><em>Value Type</em></cell> + <cell><em>Set</em></cell> + <cell><em>Get</em></cell> + <cell><em>Other Requirements and comments</em></cell> + </row> + <row> + <cell>assoc_id</cell> + <cell>integer()</cell> + <cell>no</cell> + <cell>yes</cell> + <cell>type = seqpacket, protocol = sctp, is an association</cell> + </row> + <row> + <cell>debug</cell> + <cell>boolean()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>none</cell> + </row> + <row> + <cell>iow</cell> + <cell>boolean()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>none</cell> + </row> + <row> + <cell>controlling_process</cell> + <cell>pid()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>none</cell> + </row> + <row> + <cell>rcvbuf</cell> + <cell>default | pos_integer() | {pos_integer(), pos_ineteger()}</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>'default' only valid for set. + The tuple form is only valid for type 'stream' and protocol 'tcp'.</cell> + </row> + <row> + <cell>rcvctrlbuf</cell> + <cell>default | pos_integer()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>default only valid for set</cell> + </row> + <row> + <cell>sndctrlbuf</cell> + <cell>default | pos_integer()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>default only valid for set</cell> + </row> + <row> + <cell>fd</cell> + <cell>integer()</cell> + <cell>no</cell> + <cell>yes</cell> + <cell>none</cell> + </row> + <tcaption>option levels</tcaption> + </table> + + <p>Options for level <c>socket</c>: </p> + <table> + <row> + <cell><em>Option Name</em></cell> + <cell><em>Value Type</em></cell> + <cell><em>Set</em></cell> + <cell><em>Get</em></cell> + <cell><em>Other Requirements and comments</em></cell> + </row> + <row> + <cell>acceptcon</cell> + <cell>boolean()</cell> + <cell>no</cell> + <cell>yes</cell> + <cell>none</cell> + </row> + <row> + <cell>bindtodevice</cell> + <cell>string()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>none</cell> + </row> + <row> + <cell>broadcast</cell> + <cell>boolean()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>type = dgram</cell> + </row> + <row> + <cell>debug</cell> + <cell>integer()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>requires admin capability</cell> + </row> + <row> + <cell>domain</cell> + <cell>domain()</cell> + <cell>no</cell> + <cell>yes</cell> + <cell><em>Not</em> on FreeBSD (for instance)</cell> + </row> + <row> + <cell>dontroute</cell> + <cell>boolean()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>none</cell> + </row> + <row> + <cell>keepalive</cell> + <cell>boolean()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>none</cell> + </row> + <row> + <cell>linger</cell> + <cell>abort | linger()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>none</cell> + </row> + <row> + <cell>oobinline</cell> + <cell>boolean()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>none</cell> + </row> + <row> + <cell>peek_off</cell> + <cell>integer()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>domain = local (unix)</cell> + </row> + <row> + <cell>priority</cell> + <cell>integer()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>none</cell> + </row> + <row> + <cell>protocol</cell> + <cell>protocol()</cell> + <cell>no</cell> + <cell>yes</cell> + <cell>none</cell> + </row> + <row> + <cell>rcvbuf</cell> + <cell>non_neg_integer()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>none</cell> + </row> + <row> + <cell>rcvlowat</cell> + <cell>non_neg_integer()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>none</cell> + </row> + <row> + <cell>rcvtimeo</cell> + <cell>timeval()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>none</cell> + </row> + <row> + <cell>reuseaddr</cell> + <cell>boolean()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>none</cell> + </row> + <row> + <cell>reuseport</cell> + <cell>boolean()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>domain = inet | inet6</cell> + </row> + <row> + <cell>sndbuf</cell> + <cell>non_neg_integer()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>none</cell> + </row> + <row> + <cell>sndlowat</cell> + <cell>non_neg_integer()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>not changeable on Linux</cell> + </row> + <row> + <cell>sndtimeo</cell> + <cell>timeval()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>none</cell> + </row> + <row> + <cell>timestamp</cell> + <cell>boolean()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>none</cell> + </row> + <row> + <cell>type</cell> + <cell>type()</cell> + <cell>no</cell> + <cell>yes</cell> + <cell>none</cell> + </row> + <tcaption>socket options</tcaption> + </table> + + <p>Options for level <c>ip</c>: </p> + <table> + <row> + <cell><em>Option Name</em></cell> + <cell><em>Value Type</em></cell> + <cell><em>Set</em></cell> + <cell><em>Get</em></cell> + <cell><em>Other Requirements and comments</em></cell> + </row> + <row> + <cell>add_membership</cell> + <cell>ip_mreq()</cell> + <cell>yes</cell> + <cell>no</cell> + <cell>none</cell> + </row> + <row> + <cell>add_source_membership</cell> + <cell>ip_mreq_source()</cell> + <cell>yes</cell> + <cell>no</cell> + <cell>none</cell> + </row> + <row> + <cell>block_source</cell> + <cell>ip_mreq_source()</cell> + <cell>yes</cell> + <cell>no</cell> + <cell>none</cell> + </row> + <row> + <cell>drop_membership</cell> + <cell>ip_mreq()</cell> + <cell>yes</cell> + <cell>no</cell> + <cell>none</cell> + </row> + <row> + <cell>drop_source_membership</cell> + <cell>ip_mreq_source()</cell> + <cell>yes</cell> + <cell>no</cell> + <cell>none</cell> + </row> + <row> + <cell>freebind</cell> + <cell>boolean()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>none</cell> + </row> + <row> + <cell>hdrincl</cell> + <cell>boolean()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>type = raw</cell> + </row> + <row> + <cell>minttl</cell> + <cell>integer()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>type = raw</cell> + </row> + <row> + <cell>msfilter</cell> + <cell>null | ip_msfilter()</cell> + <cell>yes</cell> + <cell>no</cell> + <cell>none</cell> + </row> + <row> + <cell>mtu</cell> + <cell>integer()</cell> + <cell>no</cell> + <cell>yes</cell> + <cell>type = raw</cell> + </row> + <row> + <cell>mtu_discover</cell> + <cell>ip_pmtudisc()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>none</cell> + </row> + <row> + <cell>multicast_all</cell> + <cell>boolean()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>none</cell> + </row> + <row> + <cell>multicast_if</cell> + <cell>any | ip4_address()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>none</cell> + </row> + <row> + <cell>multicast_loop</cell> + <cell>boolean()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>none</cell> + </row> + <row> + <cell>multicast_ttl</cell> + <cell>uint8()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>none</cell> + </row> + <row> + <cell>nodefrag</cell> + <cell>boolean()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>type = raw</cell> + </row> + <row> + <cell>pktinfo</cell> + <cell>boolean()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>type = dgram</cell> + </row> + <row> + <cell>recvdstaddr</cell> + <cell>boolean()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>type = dgram</cell> + </row> + <row> + <cell>recverr</cell> + <cell>boolean()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>none</cell> + </row> + <row> + <cell>recvif</cell> + <cell>boolean()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>type = dgram | raw</cell> + </row> + <row> + <cell>recvopts</cell> + <cell>boolean()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>type =/= stream</cell> + </row> + <row> + <cell>recvorigdstaddr</cell> + <cell>boolean()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>none</cell> + </row> + <row> + <cell>recvttl</cell> + <cell>boolean()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>type =/= stream</cell> + </row> + <row> + <cell>retopts</cell> + <cell>boolean()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>type =/= stream</cell> + </row> + <row> + <cell>router_alert</cell> + <cell>integer()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>type = raw</cell> + </row> + <row> + <cell>sendsrcaddr</cell> + <cell>boolean()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>none</cell> + </row> + <row> + <cell>tos</cell> + <cell>ip_tos()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>some high-priority levels may require superuser capability</cell> + </row> + <row> + <cell>transparent</cell> + <cell>boolean()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>requires admin capability</cell> + </row> + <row> + <cell>ttl</cell> + <cell>integer()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>none</cell> + </row> + <row> + <cell>unblock_source</cell> + <cell>ip_mreq_source()</cell> + <cell>yes</cell> + <cell>no</cell> + <cell>none</cell> + </row> + <tcaption>ip options</tcaption> + </table> + + <p>Options for level <c>ipv6</c>: </p> + <table> + <row> + <cell><em>Option Name</em></cell> + <cell><em>Value Type</em></cell> + <cell><em>Set</em></cell> + <cell><em>Get</em></cell> + <cell><em>Other Requirements and comments</em></cell> + </row> + <row> + <cell>addrform</cell> + <cell>inet</cell> + <cell>yes</cell> + <cell>no</cell> + <cell>allowed only for IPv6 sockets that are connected and bound to a + v4-mapped-on-v6 address</cell> + </row> + <row> + <cell>add_membership</cell> + <cell>ipv6_mreq()</cell> + <cell>yes</cell> + <cell>no</cell> + <cell>none</cell> + </row> + <row> + <cell>authhdr</cell> + <cell>boolean()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>type = dgram | raw, obsolete?</cell> + </row> + <row> + <cell>drop_membership</cell> + <cell>ipv6_mreq()</cell> + <cell>yes</cell> + <cell>no</cell> + <cell>none</cell> + </row> + <row> + <cell>dstopts</cell> + <cell>boolean()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>type = dgram | raw, requires superuser privileges to update</cell> + </row> + <row> + <cell>flowinfo</cell> + <cell>boolean()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>type = dgram | raw, requires superuser privileges to update</cell> + </row> + <row> + <cell>hoplimit</cell> + <cell>boolean()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>type = dgram | raw, requires superuser privileges to update</cell> + </row> + <row> + <cell>hopopts</cell> + <cell>boolean()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>type = dgram | raw, requires superuser privileges to update</cell> + </row> + <row> + <cell>mtu</cell> + <cell>boolean()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>Get: Only after the socket has been connected</cell> + </row> + <row> + <cell>mtu_discover</cell> + <cell>ipv6_pmtudisc()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>none</cell> + </row> + <row> + <cell>multicast_hops</cell> + <cell>default | uint8()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>none</cell> + </row> + <row> + <cell>multicast_if</cell> + <cell>integer()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>type = dgram | raw</cell> + </row> + <row> + <cell>multicast_loop</cell> + <cell>boolean()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>none</cell> + </row> + <row> + <cell>recverr</cell> + <cell>boolean()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>none</cell> + </row> + <row> + <cell>recvpktinfo | pktinfo</cell> + <cell>boolean()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>type = dgram | raw</cell> + </row> + <row> + <cell>router_alert</cell> + <cell>integer()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>type = raw</cell> + </row> + <row> + <cell>rthdr</cell> + <cell>boolean()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>type = dgram | raw, requires superuser privileges to update</cell> + </row> + <row> + <cell>unicast_hops</cell> + <cell>default | uint8()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>none</cell> + </row> + <row> + <cell>v6only</cell> + <cell>boolean()</cell> + <cell>yes</cell> + <cell>no</cell> + <cell>none</cell> + </row> + <tcaption>ipv6 options</tcaption> + </table> + + <p>Options for level <c>tcp</c>: </p> + <table> + <row> + <cell><em>Option Name</em></cell> + <cell><em>Value Type</em></cell> + <cell><em>Set</em></cell> + <cell><em>Get</em></cell> + <cell><em>Other Requirements and comments</em></cell> + </row> + <row> + <cell>congestion</cell> + <cell>string()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>none</cell> + </row> + <row> + <cell>maxseg</cell> + <cell>integer()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>none</cell> + </row> + <row> + <cell>nodelay</cell> + <cell>boolean()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>none</cell> + </row> + <tcaption>tcp options</tcaption> + </table> + + <p>Options for level <c>udp</c>: </p> + <table> + <row> + <cell><em>Option Name</em></cell> + <cell><em>Value Type</em></cell> + <cell><em>Set</em></cell> + <cell><em>Get</em></cell> + <cell><em>Other Requirements and comments</em></cell> + </row> + <row> + <cell>cork</cell> + <cell>boolean()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>none</cell> + </row> + <tcaption>udp options</tcaption> + </table> + + <p>Options for level <c>sctp</c>: </p> + <table> + <row> + <cell><em>Option Name</em></cell> + <cell><em>Value Type</em></cell> + <cell><em>Set</em></cell> + <cell><em>Get</em></cell> + <cell><em>Other Requirements and comments</em></cell> + </row> + <row> + <cell>associnfo</cell> + <cell>sctp_assocparams()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>none</cell> + </row> + <row> + <cell>autoclose</cell> + <cell>non_neg_integer()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>none</cell> + </row> + <row> + <cell>disable_fragments</cell> + <cell>boolean()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>none</cell> + </row> + <row> + <cell>events</cell> + <cell>sctp_event_subscribe()</cell> + <cell>yes</cell> + <cell>no</cell> + <cell>none</cell> + </row> + <row> + <cell>initmsg</cell> + <cell>sctp_initmsg()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>none</cell> + </row> + <row> + <cell>maxseg</cell> + <cell>non_neg_integer()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>none</cell> + </row> + <row> + <cell>nodelay</cell> + <cell>boolean()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>none</cell> + </row> + <row> + <cell>rtoinfo</cell> + <cell>sctp_rtoinfo()</cell> + <cell>yes</cell> + <cell>yes</cell> + <cell>none</cell> + </row> + <tcaption>sctp options</tcaption> + </table> + + </section> +</chapter> + diff --git a/erts/doc/src/specs.xml b/erts/doc/src/specs.xml index 0b943e6295..68fab5edf1 100644 --- a/erts/doc/src/specs.xml +++ b/erts/doc/src/specs.xml @@ -5,6 +5,8 @@ <xi:include href="../specs/specs_erl_tracer.xml"/> <xi:include href="../specs/specs_init.xml"/> <xi:include href="../specs/specs_persistent_term.xml"/> + <xi:include href="../specs/specs_socket.xml"/> + <xi:include href="../specs/specs_net.xml"/> <xi:include href="../specs/specs_zlib.xml"/> <xi:include href="../specs/specs_atomics.xml"/> <xi:include href="../specs/specs_counters.xml"/> |