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| <title>mod_proxy_fdpass - Apache HTTP Server</title> |
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| <div id="preamble"><h1>Apache Module mod_proxy_fdpass</h1> |
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| <p><span>Available Languages: </span><a href="../en/mod/mod_proxy_fdpass.html" title="English"> en </a></p> |
| </div> |
| <table class="module"><tr><th><a href="module-dict.html#Description">Description:</a></th><td>fdpass external process support module for |
| <code class="module"><a href="../mod/mod_proxy.html">mod_proxy</a></code></td></tr> |
| <tr><th><a href="module-dict.html#Status">Status:</a></th><td>Extension</td></tr> |
| <tr><th><a href="module-dict.html#ModuleIdentifier">Module Identifier:</a></th><td>proxy_fdpass_module</td></tr> |
| <tr><th><a href="module-dict.html#SourceFile">Source File:</a></th><td>mod_proxy_fdpass.c</td></tr> |
| <tr><th><a href="module-dict.html#Compatibility">Compatibility:</a></th><td>Available for unix in version 2.3 and later</td></tr></table> |
| <h3>Summary</h3> |
| |
| <p>This module <em>requires</em> the service of <code class="module"><a href="../mod/mod_proxy.html">mod_proxy</a></code>. It provides support for the passing the socket of the |
| client to another process.</p> |
| |
| <p><code>mod_proxy_fdpass</code> uses the ability of AF_UNIX domain |
| sockets to <a href="http://www.freebsd.org/cgi/man.cgi?query=recv">pass an |
| open file descriptor</a> to allow another process to finish handling a request. |
| </p> |
| |
| <p>The module has a <code>proxy_fdpass_flusher</code> provider interface, |
| which allows another module to optionally send the response headers, or even |
| the start of the response body. The default flush provider disables keep-alive, |
| and sends the response headers, letting the external process just send a |
| response body.</p> |
| |
| <p>At this time the only data passed to the external process is the client |
| socket. To receive a client socket, call recvfrom with an allocated |
| <a href="http://www.kernel.org/doc/man-pages/online/pages/man3/cmsg.3.html"><code>struct cmsghdr</code></a>. Future versions of this module may include |
| more data after the client socket, but this is not implemented at this time. |
| </p> |
| </div> |
| <div id="quickview"><h3 class="directives">Directives</h3> |
| <p>This module provides no |
| directives.</p> |
| <h3>See also</h3> |
| <ul class="seealso"> |
| <li><code class="module"><a href="../mod/mod_proxy.html">mod_proxy</a></code></li> |
| </ul></div> |
| |
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| <p class="apache">Copyright 2012 The Apache Software Foundation.<br />Licensed under the <a href="http://www.apache.org/licenses/LICENSE-2.0">Apache License, Version 2.0</a>.</p> |
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