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26 <div id="page-content">
27 <div id="preamble"><h1>Apache Module mod_proxy_fcgi</h1>
29 <p><span>Available Languages: </span><a href="../en/mod/mod_proxy_fcgi.html" title="English"> en </a></p>
31 <table class="module"><tr><th><a href="module-dict.html#Description">Description:</a></th><td>FastCGI support module for
32 <code class="module"><a href="../mod/mod_proxy.html">mod_proxy</a></code></td></tr>
33 <tr><th><a href="module-dict.html#Status">Status:</a></th><td>Extension</td></tr>
34 <tr><th><a href="module-dict.html#ModuleIdentifier">Module Identifier:</a></th><td>proxy_fcgi_module</td></tr>
35 <tr><th><a href="module-dict.html#SourceFile">Source File:</a></th><td>mod_proxy_fcgi.c</td></tr>
36 <tr><th><a href="module-dict.html#Compatibility">Compatibility:</a></th><td>Available in version 2.3 and later</td></tr></table>
39 <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
40 <a href="http://www.fastcgi.com/">FastCGI</a> protocol.</p>
42 <p>Thus, in order to get the ability of handling the <code>FastCGI</code>
43 protocol, <code class="module"><a href="../mod/mod_proxy.html">mod_proxy</a></code> and
44 <code class="module"><a href="../mod/mod_proxy_fcgi.html">mod_proxy_fcgi</a></code> have to be present in the server.</p>
46 <p>Unlike <a href="http://httpd.apache.org/mod_fcgid/">mod_fcgid</a>
47 and <a href="http://www.fastcgi.com/">mod_fastcgi</a>,
48 <code class="module"><a href="../mod/mod_proxy_fcgi.html">mod_proxy_fcgi</a></code> has no provision for starting the
49 application process; <code class="program"><a href="../programs/fcgistarter.html">fcgistarter</a></code> is provided
50 (on some platforms) for that purpose. Alternatively, external launching
51 or process management may be available in the FastCGI application
54 <div class="warning"><h3>Warning</h3>
55 <p>Do not enable proxying until you have <a href="mod_proxy.html#access">secured your server</a>. Open proxy
56 servers are dangerous both to your network and to the Internet at
60 <div id="quickview"><h3>Topics</h3>
62 <li><img alt="" src="../images/down.gif" /> <a href="#examples">Examples</a></li>
63 <li><img alt="" src="../images/down.gif" /> <a href="#env">Environment Variables</a></li>
64 </ul><h3 class="directives">Directives</h3>
65 <p>This module provides no
67 <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_proxy_fcgi">Known issues</a></li><li><a href="https://bz.apache.org/bugzilla/enter_bug.cgi?product=Apache%20httpd-2&component=mod_proxy_fcgi">Report a bug</a></li></ul><h3>See also</h3>
69 <li><code class="program"><a href="../programs/fcgistarter.html">fcgistarter</a></code></li>
70 <li><code class="module"><a href="../mod/mod_proxy.html">mod_proxy</a></code></li>
71 <li><code class="module"><a href="../mod/mod_authnz_fcgi.html">mod_authnz_fcgi</a></code></li>
72 <li><a href="#comments_section">Comments</a></li></ul></div>
73 <div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
75 <h2><a name="examples" id="examples">Examples</a></h2>
76 <p>Remember, in order to make the following examples work, you have to
77 enable <code class="module"><a href="../mod/mod_proxy.html">mod_proxy</a></code> and <code class="module"><a href="../mod/mod_proxy_fcgi.html">mod_proxy_fcgi</a></code>.</p>
79 <div class="example"><h3>Single application instance</h3><pre class="prettyprint lang-config">ProxyPass "/myapp/" "fcgi://localhost:4000/"</pre>
82 <p> <code class="module"><a href="../mod/mod_proxy_fcgi.html">mod_proxy_fcgi</a></code> disables connection reuse by
83 default, so after a request has been completed the connection will NOT be
84 held open by that httpd child process and won't be reused. If the
85 FastCGI application is able to handle concurrent connections
86 from httpd, you can opt-in to connection reuse as shown in the following
89 <div class="example"><h3>Single application instance, connection reuse (2.4.11 and later)</h3><pre class="prettyprint lang-config">ProxyPass "/myapp/" "fcgi://localhost:4000/" enablereuse=on</pre>
92 <p> The following example passes the request URI as a filesystem
93 path for the PHP-FPM daemon to run. The request URL is implicitly added
94 to the 2nd parameter. The hostname and port following fcgi:// are where
95 PHP-FPM is listening. Connection pooling is enabled.</p>
96 <div class="example"><h3>PHP-FPM</h3><pre class="prettyprint lang-config">ProxyPassMatch "^/myapp/.*\.php(/.*)?$" "fcgi://localhost:9000/var/www/" enablereuse=on</pre>
99 <p> The following example passes the request URI as a filesystem
100 path for the PHP-FPM daemon to run. In this case, PHP-FPM is listening on
101 a unix domain socket (UDS). Requires 2.4.9 or later. With this syntax,
102 the hostname and optional port following fcgi:// are ignored.</p>
103 <div class="example"><h3>PHP-FPM with UDS</h3><pre class="prettyprint lang-config"># UDS does not currently support connection reuse
104 ProxyPassMatch "^/(.*\.php(/.*)?)$" "unix:/var/run/php5-fpm.sock|fcgi://localhost/var/www/"</pre>
107 <p>The balanced gateway needs <code class="module"><a href="../mod/mod_proxy_balancer.html">mod_proxy_balancer</a></code> and
108 at least one load balancer algorithm module, such as
109 <code class="module"><a href="../mod/mod_lbmethod_byrequests.html">mod_lbmethod_byrequests</a></code>, in addition to the proxy
110 modules listed above. <code class="module"><a href="../mod/mod_lbmethod_byrequests.html">mod_lbmethod_byrequests</a></code> is the
111 default, and will be used for this example configuration.</p>
113 <div class="example"><h3>Balanced gateway to multiple application instances</h3><pre class="prettyprint lang-config">ProxyPass "/myapp/" "balancer://myappcluster/"
114 <Proxy "balancer://myappcluster/">
115 BalancerMember "fcgi://localhost:4000"
116 BalancerMember "fcgi://localhost:4001"
120 <p>You can also force a request to be handled as a reverse-proxy
121 request, by creating a suitable Handler pass-through. The example
122 configuration below will pass all requests for PHP scripts to the
123 specified FastCGI server using reverse proxy.
124 This feature is available in Apache HTTP Server 2.4.10 and later. For performance
125 reasons, you will want to define a <a href="mod_proxy.html#workers">worker</a>
126 representing the same fcgi:// backend. The benefit of this form is that it
127 allows the normal mapping of URI to filename to occur in the server, and the
128 local filesystem result is passed to the backend. When FastCGI is
129 configured this way, the server can calculate the most accurate
132 <div class="example"><h3>Proxy via Handler</h3><pre class="prettyprint lang-config"><FilesMatch "\.php$">
133 # Note: The only part that varies is /path/to/app.sock
134 SetHandler "proxy:unix:/path/to/app.sock|fcgi://localhost/"
137 # Define a matching worker.
138 # The part that is matched to the SetHandler is the part that
139 # follows the pipe. If you need to distinguish, "localhost; can
140 # be anything unique.
141 <Proxy fcgi://localhost/ enablereuse=on max=10>
144 <FilesMatch ...>
145 SetHandler "proxy:fcgi://localhost:9000"
148 <FilesMatch ...>
149 SetHandler "proxy:balancer://myappcluster/"
150 </FilesMatch></pre>
152 </div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
153 <div class="section">
154 <h2><a name="env" id="env">Environment Variables</a></h2>
155 <p>In addition to the configuration directives that control the
156 behaviour of <code class="module"><a href="../mod/mod_proxy.html">mod_proxy</a></code>, there are a number of
157 <dfn>environment variables</dfn> that control the FCGI protocol
160 <dt>proxy-fcgi-pathinfo</dt>
161 <dd>When configured via <code class="directive"><a href="../mod/mod_proxy.html#proxypass">ProxyPass</a></code> or <code class="directive"><a href="../mod/mod_proxy.html#proxypassmatch">ProxyPassMatch</a></code>, <code class="module"><a href="../mod/mod_proxy_fcgi.html">mod_proxy_fcgi</a></code> will not
162 set the <var>PATH_INFO</var> environment variable. This allows
163 the backend FCGI server to correctly determine <var>SCRIPT_NAME</var>
164 and <var>Script-URI</var> and be compliant with RFC 3875 section 3.3.
165 If instead you need <code class="module"><a href="../mod/mod_proxy_fcgi.html">mod_proxy_fcgi</a></code> to generate
166 a "best guess" for <var>PATH_INFO</var>, set this env-var.
167 This is a workaround for a bug in some FCGI implementations. This
168 variable can be set to multiple values to tweak at how the best guess
169 is chosen (In 2.4.11 and later only):
172 <dd>PATH_INFO is split from the slash following the
173 <em>first</em> "." in the URL.</dd>
175 <dd>PATH_INFO is split from the slash following the
176 <em>last</em> "." in the URL.</dd>
178 <dd>PATH_INFO is calculated by an attempt to map the URL to the
179 local filesystem.</dd>
181 <dd>PATH_INFO is the path component of the URL, unescaped /
183 <dt>any other value</dt>
184 <dd>PATH_INFO is the same as the path component of the URL.
185 Originally, this was the only proxy-fcgi-pathinfo option.</dd>
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192 <p><span>Available Languages: </span><a href="../en/mod/mod_proxy_fcgi.html" title="English"> en </a></p>
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