2.4.x/docs/manual/mod/mod_proxy_connect.xml

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<modulesynopsis metafile="mod_proxy_connect.xml.meta">

<name>mod_proxy_connect</name>
<description><module>mod_proxy</module> extension for
<code>CONNECT</code> request handling</description>
<status>Extension</status>
<sourcefile>mod_proxy_connect.c</sourcefile>
<identifier>proxy_connect_module</identifier>

<summary>
    <p>This module <em>requires</em> the service of <module
    >mod_proxy</module>. It provides support for the <code>CONNECT</code>
    HTTP method. This method is mainly used to tunnel SSL requests
    through proxy servers.</p>

    <p>Thus, in order to get the ability of handling <code>CONNECT</code>
    requests, <module>mod_proxy</module> and
    <module>mod_proxy_connect</module> have to be present in the server.</p>

    <p>CONNECT is also used when the server needs to send an HTTPS request
    through a forward proxy. In this case the server acts as a CONNECT client.
    This functionality is part of <module>mod_proxy</module> and
    <module>mod_proxy_connect</module> is not needed in this case.</p>

    <note type="warning"><title>Warning</title>
      <p>Do not enable proxying until you have <a
      href="mod_proxy.html#access">secured your server</a>. Open proxy
      servers are dangerous both to your network and to the Internet at
      large.</p>
    </note>
</summary>
<seealso><module>mod_proxy</module></seealso>

<section id="notes"><title>Request notes</title>
    <p><module>mod_proxy_connect</module> creates the following request notes for
        logging using the <code>%{VARNAME}n</code> format in
        <directive module="mod_log_config">LogFormat</directive> or
        <directive module="core">ErrorLogFormat</directive>:
    </p>
    <dl>
        <dt>proxy-source-port</dt>
        <dd>The local port used for the connection to the backend server.</dd>
    </dl>
</section>

<directivesynopsis>
<name>AllowCONNECT</name>
<description>Ports that are allowed to <code>CONNECT</code> through the
proxy</description>
<syntax>AllowCONNECT <var>port</var>[-<var>port</var>]
[<var>port</var>[-<var>port</var>]] ...</syntax>
<default>AllowCONNECT 443 563</default>
<contextlist><context>server config</context><context>virtual host</context>
</contextlist>
<compatibility>Moved from <module>mod_proxy</module> in Apache 2.3.5.
Port ranges available since Apache 2.3.7.</compatibility>

<usage>
    <p>The <directive>AllowCONNECT</directive> directive specifies a list
    of port numbers or ranges to which the proxy <code>CONNECT</code> method
    may connect.  Today's browsers use this method when a <code>https</code>
    connection is requested and proxy tunneling over HTTP is in effect.</p>

    <p>By default, only the default https port (<code>443</code>) and the
    default snews port (<code>563</code>) are enabled. Use the
    <directive>AllowCONNECT</directive> directive to override this default and
    allow connections to the listed ports only.</p>
</usage>
</directivesynopsis>

</modulesynopsis>