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231 lines
6.8 KiB
XML
231 lines
6.8 KiB
XML
<?xml version="1.0" encoding="utf-8"?>
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<!-- $Revision$ -->
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<!-- EN-Revision: 96c9d88bad9a7d7d44bfb7f26c226df7ee9ddf26 Maintainer: seros Status: ready -->
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<refentry xmlns="http://docbook.org/ns/docbook" xml:id="function.socket-create-pair">
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<refnamediv>
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<refname>socket_create_pair</refname>
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<refpurpose>Crea un par de sockets indistinguibles y los almacena en una matriz</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_create_pair</methodname>
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<methodparam><type>int</type><parameter>domain</parameter></methodparam>
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<methodparam><type>int</type><parameter>type</parameter></methodparam>
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<methodparam><type>int</type><parameter>protocol</parameter></methodparam>
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<methodparam><type>array</type><parameter role="reference">fd</parameter></methodparam>
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</methodsynopsis>
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<para>
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<function>socket_create_pair</function> crea dos sockets conectados e
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indistinguibles y los almacena en <parameter>fd</parameter>.
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Esta función se usa comúnmente en IPC (InterProcess Communication - Comunicación entre procesos).
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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>domain</parameter></term>
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<listitem>
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<para>
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El parámetro <parameter>domain</parameter> especifica la familia de
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protocolos que se va a usar en el socket. Véase <function>socket_create</function>
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para la lista completa.
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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>type</parameter></term>
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<listitem>
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<para>
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El parámetro <parameter>type</parameter> selecciona el tipo de comunicación
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que va a usar el socket. Véase <function>socket_create</function> para la
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lista completa.
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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>protocol</parameter></term>
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<listitem>
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<para>
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El parámetro <parameter>protocol</parameter> establece el protocolo
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específico dentro del <parameter>domain</parameter> especificado a usar
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cuando se comunica con el socket devuelto. El valor apropiado se puede recuperar por
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nombre usando <function>getprotobyname</function>. Si
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el protocolo deseado es TCP, o UDP, se pueden usar también las constantes
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<constant>SOL_TCP</constant>, y <constant>SOL_UDP</constant>
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correspondientes.
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</para>
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<para>
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Véase <function>socket_create</function> para la lista completa de protocolos
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soportados.
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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>fd</parameter></term>
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<listitem>
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<para>
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Referencia a una matriz en la cuál los dos recursos socket serán insertados.
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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;
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</para>
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</refsect1>
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<refsect1 role="changelog">
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&reftitle.changelog;
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<para>
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<informaltable>
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<tgroup cols="2">
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<thead>
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<row>
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<entry>&Version;</entry>
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<entry>&Description;</entry>
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</row>
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</thead>
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<tbody>
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<row>
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<entry>5.3.0</entry>
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<entry>
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Esta función ahora es rehabilitada en plataformas Windows.
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</entry>
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</row>
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<row>
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<entry>4.3.0</entry>
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<entry>
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Esta función no estaba disponible en plataformas Windows
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a causa de un error.
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</entry>
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</row>
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</tbody>
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</tgroup>
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</informaltable>
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</para>
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</refsect1>
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<refsect1 role="examples">
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&reftitle.examples;
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<para>
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<example>
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<title>Ejemplo de <function>socket_create_pair</function></title>
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<programlisting role="php">
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<![CDATA[
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<?php
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$sockets = array();
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/* En Windows necesitamos usar AF_INET */
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$domain = (strtoupper(substr(PHP_OS, 0, 3)) == 'WIN' ? AF_INET : AF_UNIX);
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/* Configurar el par de sockets */
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if (socket_create_pair($domain, SOCK_STREAM, 0, $sockets) === false) {
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echo "socket_create_pair failed. Reason: ".socket_strerror(socket_last_error());
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}
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/* Enviar y Recibir Información */
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if (socket_write($sockets[0], "ABCdef123\n", strlen("ABCdef123\n")) === false) {
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echo "socket_write() failed. Reason: ".socket_strerror(socket_last_error($sockets[0]));
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}
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if (($data = socket_read($sockets[1], strlen("ABCdef123\n"), PHP_BINARY_READ)) === false) {
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echo "socket_read() failed. Reason: ".socket_strerror(socket_last_error($sockets[1]));
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}
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var_dump($data);
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/* Cerrar los sockets */
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socket_close($sockets[0]);
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socket_close($sockets[1]);
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?>
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]]>
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</programlisting>
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</example>
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</para>
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<para>
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<example>
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<title>Ejemplo IPC de <function>socket_create_pair</function></title>
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<programlisting role="php">
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<![CDATA[
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<?php
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$ary = array();
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$strone = 'Mensaje del Padre.';
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$strtwo = 'Mensaje del Hijo.';
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if (socket_create_pair(AF_UNIX, SOCK_STREAM, 0, $ary) === false) {
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echo "socket_create_pair() failed. Reason: ".socket_strerror(socket_last_error());
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}
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$pid = pcntl_fork();
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if ($pid == -1) {
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echo 'Could not fork Process.';
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} elseif ($pid) {
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/*padre*/
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socket_close($ary[0]);
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if (socket_write($ary[1], $strone, strlen($strone)) === false) {
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echo "socket_write() failed. Reason: ".socket_strerror(socket_last_error($ary[1]));
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}
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if (socket_read($ary[1], strlen($strtwo), PHP_BINARY_READ) == $strtwo) {
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echo "Recieved $strtwo\n";
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}
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socket_close($ary[1]);
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} else {
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/*hijo*/
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socket_close($ary[1]);
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if (socket_write($ary[0], $strtwo, strlen($strtwo)) === false) {
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echo "socket_write() failed. Reason: ".socket_strerror(socket_last_error($ary[0]));
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}
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if (socket_read($ary[0], strlen($strone), PHP_BINARY_READ) == $strone) {
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echo "Recieved $strone\n";
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}
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socket_close($ary[0]);
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}
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?>
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]]>
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</programlisting>
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</example>
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</para>
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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_create</function></member>
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<member><function>socket_create_listen</function></member>
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<member><function>socket_bind</function></member>
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<member><function>socket_listen</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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