mirror of
https://github.com/sigmasternchen/php-doc-en
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96c9d88bad
git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@297028 c90b9560-bf6c-de11-be94-00142212c4b1
131 lines
4.3 KiB
XML
131 lines
4.3 KiB
XML
<?xml version="1.0" encoding="utf-8"?>
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<!-- $Revision$ -->
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<refentry xmlns="http://docbook.org/ns/docbook" xml:id="function.socket-getpeername">
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<refnamediv>
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<refname>socket_getpeername</refname>
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<refpurpose>Queries the remote side of the given socket which may either result in host/port or in a Unix filesystem path, dependent on its type</refpurpose>
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</refnamediv>
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<refsect1 role="description">
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&reftitle.description;
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<methodsynopsis>
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<type>bool</type><methodname>socket_getpeername</methodname>
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<methodparam><type>resource</type><parameter>socket</parameter></methodparam>
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<methodparam><type>string</type><parameter role="reference">address</parameter></methodparam>
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<methodparam choice="opt"><type>int</type><parameter role="reference">port</parameter></methodparam>
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</methodsynopsis>
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<para>
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Queries the remote side of the given socket which may either result in
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host/port or in a Unix filesystem path, dependent on its type.
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</para>
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</refsect1>
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<refsect1 role="parameters">
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&reftitle.parameters;
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<para>
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<variablelist>
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<varlistentry>
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<term><parameter>socket</parameter></term>
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<listitem>
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<para>
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A valid socket resource created with <function>socket_create</function>
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or <function>socket_accept</function>.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><parameter>address</parameter></term>
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<listitem>
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<para>
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If the given socket is of type <constant>AF_INET</constant> or
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<constant>AF_INET6</constant>, <function>socket_getpeername</function>
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will return the peers (remote) <emphasis>IP address</emphasis> in
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appropriate notation (e.g. <literal>127.0.0.1</literal> or
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<literal>fe80::1</literal>) in the <parameter>address</parameter>
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parameter and, if the optional <parameter>port</parameter> parameter is
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present, also the associated port.
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</para>
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<para>
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If the given socket is of type <constant>AF_UNIX</constant>,
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<function>socket_getpeername</function> will return the Unix filesystem
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path (e.g. <literal>/var/run/daemon.sock</literal>) in the
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<parameter>address</parameter> parameter.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><parameter>port</parameter></term>
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<listitem>
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<para>
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If given, this will hold the port associated to
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<parameter>address</parameter>.
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</para>
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</refsect1>
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<refsect1 role="returnvalues">
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&reftitle.returnvalues;
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<para>
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&return.success; <function>socket_getpeername</function> may also return
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&false; if the socket type is not any of <constant>AF_INET</constant>,
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<constant>AF_INET6</constant>, or <constant>AF_UNIX</constant>, in which
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case the last socket error code is <emphasis>not</emphasis> updated.
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</para>
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</refsect1>
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<refsect1 role="notes">
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&reftitle.notes;
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<note>
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<para>
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<function>socket_getpeername</function> should not be used with
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<constant>AF_UNIX</constant> sockets created with <function>socket_accept</function>.
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Only sockets created with <function>socket_connect</function> or a primary
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server socket following a call to <function>socket_bind</function> will return
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meaningful values.
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</para>
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</note>
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<note>
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<para>
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For having <function>socket_getpeername</function> to return a meaningful value,
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the socket it is applied upon must of course be one for which the concept of
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"peer" makes sense.
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</para>
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</note>
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</refsect1>
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<refsect1 role="seealso">
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&reftitle.seealso;
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<para>
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<simplelist>
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<member><function>socket_getsockname</function></member>
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<member><function>socket_last_error</function></member>
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<member><function>socket_strerror</function></member>
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</simplelist>
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</para>
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</refsect1>
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</refentry>
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<!-- Keep this comment at the end of the file
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Local variables:
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mode: sgml
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sgml-omittag:t
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sgml-shorttag:t
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sgml-minimize-attributes:nil
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sgml-always-quote-attributes:t
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sgml-indent-step:1
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sgml-indent-data:t
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indent-tabs-mode:nil
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sgml-parent-document:nil
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sgml-default-dtd-file:"~/.phpdoc/manual.ced"
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sgml-exposed-tags:nil
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sgml-local-catalogs:nil
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sgml-local-ecat-files:nil
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End:
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vim600: syn=xml fen fdm=syntax fdl=2 si
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vim: et tw=78 syn=sgml
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vi: ts=1 sw=1
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-->
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