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<div id="preamble"><h1>Apache Module mod_proxy_http2</h1>
<div class="toplang">
<p><span>Available Languages: </span><a href="../en/mod/mod_proxy_http2.html" title="English"> en </a></p>
</div>
<table class="module"><tr><th><a href="module-dict.html#Description">Description:</a></th><td>HTTP/2 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_http2_module</td></tr>
<tr><th><a href="module-dict.html#SourceFile">Source File:</a></th><td>mod_proxy_http2.c</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 the features used for
proxying HTTP/2 requests. <code class="module"><a href="../mod/mod_proxy_http2.html">mod_proxy_http2</a></code>
supports HTTP/2 only. It does <em>not</em>
provide any downgrades to HTTP/1.1.</p>
<p>Thus, in order to get the ability of handling HTTP/2 proxy requests,
<code class="module"><a href="../mod/mod_proxy.html">mod_proxy</a></code> and <code class="module"><a href="../mod/mod_proxy_http2.html">mod_proxy_http2</a></code>
have to be present in the server.</p>
<p><code class="module"><a href="../mod/mod_proxy_http2.html">mod_proxy_http2</a></code> works with incoming requests
over HTTP/1.1 and HTTP/2 requests. If <code class="module"><a href="../mod/mod_http2.html">mod_http2</a></code>
handles the frontend connection, requests against the same HTTP/2
backend are sent over a single connection, whenever possible.</p>
<p>This module relies on <a href="http://nghttp2.org/">libnghttp2</a>
to provide the core http/2 engine.</p>
<div class="warning"><h3>Warning</h3>
<p>This module is experimental. Its behaviors, directives, and
defaults are subject to more change from release to
release relative to other standard modules. Users are encouraged to
consult the "CHANGES" file for potential updates.</p>
</div>
<div class="warning"><h3>Warning</h3>
<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>
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<div id="quickview"><h3>Topics</h3>
<ul id="topics">
<li><img alt="" src="../images/down.gif" /> <a href="#notes">Request notes</a></li>
</ul><h3 class="directives">Directives</h3>
<p>This module provides no
directives.</p>
<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_http2">Known issues</a></li><li><a href="https://bz.apache.org/bugzilla/enter_bug.cgi?product=Apache%20httpd-2&component=mod_proxy_http2">Report a bug</a></li></ul><h3>See also</h3>
<ul class="seealso">
<li><code class="module"><a href="../mod/mod_http2.html">mod_http2</a></code></li>
<li><code class="module"><a href="../mod/mod_proxy.html">mod_proxy</a></code></li>
<li><code class="module"><a href="../mod/mod_proxy_connect.html">mod_proxy_connect</a></code></li>
<li><a href="#comments_section">Comments</a></li></ul></div>
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<h2><a name="notes" id="notes">Request notes</a></h2>
<p><code class="module"><a href="../mod/mod_proxy_http.html">mod_proxy_http</a></code> creates the following request notes for
logging using the <code>%{VARNAME}n</code> format in
<code class="directive"><a href="../mod/mod_log_config.html#logformat">LogFormat</a></code> or
<code class="directive"><a href="../mod/core.html#errorlogformat">ErrorLogFormat</a></code>:
</p>
<dl>
<dt>proxy-source-port</dt>
<dd>The local port used for the connection to the backend server.</dd>
<dt>proxy-status</dt>
<dd>The HTTP/2 status received from the backend server.</dd>
</dl>
</div>
</div>
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