php-doc-en/reference/zmq/zmqsocket/connect.xml
2013-10-24 06:42:14 +00:00

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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<refentry xml:id="zmqsocket.connect" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
<refnamediv>
<refname>ZMQSocket::connect</refname>
<refpurpose>Connect the socket</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<modifier>public</modifier> <type>ZMQSocket</type><methodname>ZMQSocket::connect</methodname>
<methodparam><type>string</type><parameter>dsn</parameter></methodparam>
<methodparam choice="opt"><type>boolean</type><parameter>force</parameter><initializer>false</initializer></methodparam>
</methodsynopsis>
<para>
Connect the socket to a remote endpoint. The endpoint is defined in format <literal>transport://address</literal> where
transport is one of the following: inproc, ipc, tcp, pgm or epgm.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>dsn</parameter></term>
<listitem>
<para>
The connect dsn, for example <literal>transport://address</literal>.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>force</parameter></term>
<listitem>
<para>
Tries to connect even if the socket has already been connected to given endpoint.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
<example>
<title>A <function>ZMQContext</function> example</title>
<para>
Construct a new context and allocate request socket from it
</para>
<programlisting role="php">
<![CDATA[
<?php
/* Server hostname */
$dsn = "tcp://127.0.0.1:5555";
/* Create a socket */
$socket = new ZMQSocket(new ZMQContext(), ZMQ::SOCKET_REQ, 'my socket');
/* Get list of connected endpoints */
$endpoints = $socket->getEndpoints();
/* Check if the socket is connected */
if (!in_array($dsn, $endpoints['connect'])) {
echo "<p>Connecting to $dsn</p>";
$socket->connect($dsn);
} else {
echo "<p>Already connected to $dsn</p>";
}
/* Send and receive */
$socket->send("Hello!");
$message = $socket->recv();
echo "<p>Server said: {$message}</p>";
?>
]]>
</programlisting>
</example>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
Returns the current object. Throws ZMQSocketException on error.
</para>
</refsect1>
</refentry>
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