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<title>mod_cgid - Apache HTTP Server Version 2.5</title>
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<div id="preamble"><h1>Apache Module mod_cgid</h1>
<div class="toplang">
<p><span>Available Languages: </span><a href="../en/mod/mod_cgid.html" title="English"> en </a> |
<a href="../fr/mod/mod_cgid.html" hreflang="fr" rel="alternate" title="Français"> fr </a> |
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<table class="module"><tr><th><a href="module-dict.html#Description">Description:</a></th><td>Execution of CGI scripts using an
external CGI daemon</td></tr>
<tr><th><a href="module-dict.html#Status">Status:</a></th><td>Base</td></tr>
<tr><th><a href="module-dict.html#ModuleIdentifier">Module Identifier:</a></th><td>cgid_module</td></tr>
<tr><th><a href="module-dict.html#SourceFile">Source File:</a></th><td>mod_cgid.c</td></tr>
<tr><th><a href="module-dict.html#Compatibility">Compatibility:</a></th><td>Unix threaded MPMs only</td></tr></table>
<h3>Summary</h3>
<p>Except for the optimizations and the additional <code class="directive"><a href="#scriptsock">ScriptSock</a></code> directive noted below,
<code class="module"><a href="../mod/mod_cgid.html">mod_cgid</a></code> behaves similarly to <code class="module"><a href="../mod/mod_cgi.html">mod_cgi</a></code>.
<strong>See the <code class="module"><a href="../mod/mod_cgi.html">mod_cgi</a></code> summary for additional details
about Apache and CGI.</strong></p>
<p>On certain unix operating systems, forking a process from a
multi-threaded server is a very expensive operation because the
new process will replicate all the threads of the parent
process. In order to avoid incurring this expense on each CGI
invocation, <code class="module"><a href="../mod/mod_cgid.html">mod_cgid</a></code> creates an external daemon that is
responsible for forking child processes to run CGI scripts. The
main server communicates with this daemon using a unix domain
socket.</p>
<p>This module is used by default instead of
<code class="module"><a href="../mod/mod_cgi.html">mod_cgi</a></code> whenever a multi-threaded MPM
is selected during the compilation process. At the user level,
this module is identical in configuration and operation to
<code class="module"><a href="../mod/mod_cgi.html">mod_cgi</a></code>. The only exception is the
additional directive <code>ScriptSock</code> which gives the
name of the socket to use for communication with the cgi
daemon.</p>
</div>
<div id="quickview"><h3 class="directives">Directives</h3>
<ul id="toc">
<li><img alt="" src="../images/down.gif" /> <a href="#cgidscripttimeout">CGIDScriptTimeout</a></li>
<li><img alt="" src="../images/right.gif" /> <a href="mod_cgi.html#scriptlog">ScriptLog</a></li>
<li><img alt="" src="../images/right.gif" /> <a href="mod_cgi.html#scriptlogbuffer">ScriptLogBuffer</a></li>
<li><img alt="" src="../images/right.gif" /> <a href="mod_cgi.html#scriptloglength">ScriptLogLength</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#scriptsock">ScriptSock</a></li>
</ul>
<h3>Bugfix checklist</h3><ul class="seealso"><li><a href="https://www.apache.org/dist/httpd/CHANGES_2.4">httpd changelog</a></li><li><a href="https://bz.apache.org/bugzilla/buglist.cgi?bug_status=__open__&list_id=144532&product=Apache%20httpd-2&query_format=specific&order=changeddate%20DESC%2Cpriority%2Cbug_severity&component=mod_cgid">Known issues</a></li><li><a href="https://bz.apache.org/bugzilla/enter_bug.cgi?product=Apache%20httpd-2&component=mod_cgid">Report a bug</a></li></ul><h3>See also</h3>
<ul class="seealso">
<li><code class="module"><a href="../mod/mod_cgi.html">mod_cgi</a></code></li>
<li><a href="../suexec.html">Running CGI programs under different
user IDs</a></li>
<li><a href="#comments_section">Comments</a></li></ul></div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="CGIDScriptTimeout" id="CGIDScriptTimeout">CGIDScriptTimeout</a> <a name="cgidscripttimeout" id="cgidscripttimeout">Directive</a> <a title="Permanent link" href="#cgidscripttimeout" class="permalink">¶</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>The length of time to wait for more output from the
CGI program</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>CGIDScriptTimeout <var>time</var>[s|ms]</code></td></tr>
<tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>value of <code class="directive"><a href="../mod/core.html#timeout">Timeout</a></code> directive when
unset or set to 0</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config, virtual host, directory, .htaccess</td></tr>
<tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Base</td></tr>
<tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_cgid</td></tr>
<tr><th><a href="directive-dict.html#Compatibility">Compatibility:</a></th><td>Available in httpd 2.4.10 and later; in prior releases no timeout was applied</td></tr>
</table>
<p>This directive limits the length of time to wait for more output from
the CGI program. If the time is exceeded, the request and CGI are
terminated.</p>
<div class="example"><h3>Example</h3><pre class="prettyprint lang-config">CGIDScriptTimeout 20</pre>
</div>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="ScriptSock" id="ScriptSock">ScriptSock</a> <a name="scriptsock" id="scriptsock">Directive</a> <a title="Permanent link" href="#scriptsock" class="permalink">¶</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>The filename prefix of the socket to use for communication with
the cgi daemon</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>ScriptSock <var>file-path</var></code></td></tr>
<tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>ScriptSock cgisock</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config</td></tr>
<tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Base</td></tr>
<tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_cgid</td></tr>
</table>
<p>This directive sets the filename prefix of the socket to use for
communication with the CGI daemon, an extension corresponding to
the process ID of the server will be appended. The socket will be opened
using the permissions of the user who starts Apache (usually
root). To maintain the security of communications with CGI
scripts, it is important that no other user has permission to
write in the directory where the socket is located.</p>
<p>If <var>file-path</var> is not an absolute path, the location specified
will be relative to the value of
<code class="directive"><a href="../mod/core.html#defaultruntimedir">DefaultRuntimeDir</a></code>.</p>
<div class="example"><h3>Example</h3><pre class="prettyprint lang-config">ScriptSock /var/run/cgid.sock</pre>
</div>
</div>
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</div><div class="top"><a href="#page-header"><img src="../images/up.gif" alt="top" /></a></div><div class="section"><h2><a id="comments_section" name="comments_section">Comments</a></h2><div class="warning"><strong>Notice:</strong><br />This is not a Q&A section. Comments placed here should be pointed towards suggestions on improving the documentation or server, and may be removed by our moderators if they are either implemented or considered invalid/off-topic. Questions on how to manage the Apache HTTP Server should be directed at either our IRC channel, #httpd, on Freenode, or sent to our <a href="https://httpd.apache.org/lists.html">mailing lists</a>.</div>
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