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git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@164036 c90b9560-bf6c-de11-be94-00142212c4b1
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Sara Golemon 2004-07-22 21:19:00 +00:00
parent 83efacca49
commit 1c3ce36b87
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reference/stream/functions/stream-socket-enable-crypto.xml Normal file
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<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.1 $ -->
<refentry id="function.stream-socket-enable-crypto">
<refnamediv>
<refname>stream_socket_enable_crypto</refname>
<refpurpose>
Turns encryption on/off on an already connected socket.
</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
<methodsynopsis>
<type>resource</type><methodname>stream_socket_enable_crypto</methodname>
<methodparam><type>resource</type><parameter>stream</parameter></methodparam>
<methodparam><type>bool</type><parameter>enable</parameter></methodparam>
<methodparam choice="opt"><type>int</type><parameter>crypto_type</parameter></methodparam>
<methodparam choice="opt"><type>resource</type><parameter>session_stream</parameter></methodparam>
</methodsynopsis>
<simpara>
When called with the <parameter>crypto_type</parameter> parameter,
<function>stream_socket_enable_crypto</function> will setup
encryption on the stream using the specified method.
</simpara>
<para>
Valid values for <parameter>crypto_type</parameter>
<itemizedlist>
<listitem><simpara><constant>STREAM_CRYPTO_METHOD_SSLv2_CLIENT</constant></simpara></listitem>
<listitem><simpara><constant>STREAM_CRYPTO_METHOD_SSLv3_CLIENT</constant></simpara></listitem>
<listitem><simpara><constant>STREAM_CRYPTO_METHOD_SSLv23_CLIENT</constant></simpara></listitem>
<listitem><simpara><constant>STREAM_CRYPTO_METHOD_TLS_CLIENT</constant></simpara></listitem>
<listitem><simpara><constant>STREAM_CRYPTO_METHOD_SSLv2_SERVER</constant></simpara></listitem>
<listitem><simpara><constant>STREAM_CRYPTO_METHOD_SSLv3_SERVER</constant></simpara></listitem>
<listitem><simpara><constant>STREAM_CRYPTO_METHOD_SSLv23_SERVER</constant></simpara></listitem>
<listitem><simpara><constant>STREAM_CRYPTO_METHOD_TLS_SERVER</constant></simpara></listitem>
</itemizedlist>
</para>
<simpara>
Once the crypto settings are established, cryptography can be turned
on and off dynamically by passing &true; or &false; in the
<parameter>enable</parameter> parameter.
</simpara>
<simpara>
If this stream should be seeded with settings from an already established
crypto enabled stream, pass that stream's resource variable
in the fourth parameter.
</simpara>
<simpara>
&return.success;
</simpara>
<example>
<title><function>stream_socket_enable_crypto</function> Example</title>
<programlisting role="php">
<![CDATA[
<?php
$fp = stream_socket_client("tcp://myproto.example.com:31337", $errno, $errstr, 30);
if (!$fp) {
die("Unable to connect: $errstr ($errno)");
}
/* Turn on encryption for login phase */
stream_socket_enable_crypto($fp, true, STREAM_CRYPTO_METHOD_SSLv23_CLIENT);
fwrite($fp, "USER god\r\n");
fwrite($fp, "PASS secret\r\n");
/* Turn off encryption for the rest */
stream_socket_enable_crypto($fp, false);
while ($motd = fgets($fp)) {
echo $motd;
}
fclose($fp);
?>
]]>
</programlisting>
</example>
<simpara>
<xref linkend="ref.openssl"/>, and
<xref linkend="transports"/>
</simpara>
</refsect1>
</refentry>
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