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<title>Overview of new features in Apache HTTP Server 2.6 - Apache HTTP Server Version 2.5</title>
<link href="./style/css/manual.css" rel="stylesheet" media="all" type="text/css" title="Main stylesheet" />
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<body id="manual-page"><div id="page-header">
<p class="menu"><a href="./mod/">Modules</a> | <a href="./mod/quickreference.html">Directives</a> | <a href="http://wiki.apache.org/httpd/FAQ">FAQ</a> | <a href="./glossary.html">Glossary</a> | <a href="./sitemap.html">Sitemap</a></p>
<p class="apache">Apache HTTP Server Version 2.5</p>
<img alt="" src="./images/feather.png" /></div>
<div class="up"><a href="./"><img title="<-" alt="<-" src="./images/left.gif" /></a></div>
<div id="path">
<a href="http://www.apache.org/">Apache</a> > <a href="http://httpd.apache.org/">HTTP Server</a> > <a href="http://httpd.apache.org/docs/">Documentation</a> > <a href="./">Version 2.5</a></div><div id="page-content"><div id="preamble"><h1>Overview of new features in Apache HTTP Server 2.6</h1>
<div class="toplang">
<p><span>Available Languages: </span><a href="./en/new_features_2_6.html" title="English"> en </a></p>
</div>
<p>This document describes some of the major changes between the
2.4 and 2.6 versions of the Apache HTTP Server. For new features since
version 2.2, see the <a href="new_features_2_4.html">2.4 new features</a>
document.</p>
</div>
<div id="quickview"><ul id="toc"><li><img alt="" src="./images/down.gif" /> <a href="#core">Core Enhancements</a></li>
<li><img alt="" src="./images/down.gif" /> <a href="#newmods">New Modules</a></li>
<li><img alt="" src="./images/down.gif" /> <a href="#module">Module Enhancements</a></li>
<li><img alt="" src="./images/down.gif" /> <a href="#programs">Program Enhancements</a></li>
<li><img alt="" src="./images/down.gif" /> <a href="#documentation">Documentation</a></li>
<li><img alt="" src="./images/down.gif" /> <a href="#developer">Module Developer Changes</a></li>
</ul><h3>See also</h3><ul class="seealso"><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="section">
<h2><a name="core" id="core">Core Enhancements</a> <a title="Permanent link" href="#core" class="permalink">¶</a></h2>
<dl>
<dt>ContentDigest directive and Content-MD5 header</dt>
<dd>The <code>ContentDigest</code> directive and support for the the
<code>Content-MD5</code> header has been removed from the server,
corresponding with the removal of this header from
<a href="https://tools.ietf.org/html/rfc7231#appendix-B">
RFC7231 Hypertext Transfer Protocol (HTTP/1.1): Semantics and
Content.</a></dd>
<dt><code>Listen</code> directive options</dt>
<dd>The <code class="directive"><a href="./mod/mpm_common.html#listen">Listen</a></code>
directive now supports an optional <code>options=...</code>
argument, allowing per-listener socket options to be
configured.</dd>
<dt><code>systemd</code> socket activation</dt>
<dd><code class="program"><a href="./programs/httpd.html">httpd</a></code> can now be configured to start via
<code>systemd</code> <a href="https://www.freedesktop.org/software/systemd/man/systemd.socket.html">socket activation</a>.</dd>
<dt>New <code>DefaultStateDir</code> directive.</dt>
<dd>The <code class="directive"><a href="./mod/core.html#defaultstatedir">DefaultStateDir</a></code>
directive has been added to specify a directory for storing
persistent state.</dd>
<dt>Zone/scope support in IPv6 addresses</dt>
<dd>If built against APR 1.7.0 or later, zones (scopes) can be
specified in an IPv6 link-local address used with the
<code class="directive"><a href="./mod/mpm_common.html#listen">Listen</a></code> or
<code class="directive"><a href="./mod/core.html#virtualhost">VirtualHost</a></code> directive.</dd>
</dl>
</div><div class="top"><a href="#page-header"><img alt="top" src="./images/up.gif" /></a></div>
<div class="section">
<h2><a name="newmods" id="newmods">New Modules</a> <a title="Permanent link" href="#newmods" class="permalink">¶</a></h2>
<dl>
<dt><code class="module"><a href="./mod/mod_journald.html">mod_journald</a></code>, <code class="module"><a href="./mod/mod_syslog.html">mod_syslog</a></code></dt>
<dd>These new modules provide support for logging to syslog or
<code>journald</code>.</dd>
</dl>
</div><div class="top"><a href="#page-header"><img alt="top" src="./images/up.gif" /></a></div>
<div class="section">
<h2><a name="module" id="module">Module Enhancements</a> <a title="Permanent link" href="#module" class="permalink">¶</a></h2>
<dl>
<dt><code class="module"><a href="./mod/mod_ssl.html">mod_ssl</a></code></dt>
<dd>The following mod_ssl enhancements are included:
<ul>
<li><code class="directive"><a href="./mod/mod_ssl.html#sslrandomseed">SSLRandomSeed</a></code>
directive is now deprecated and is ignored if building against
OpenSSL 1.1.1 or later.</li>
<li>The <code>SSLKEYLOGFILE</code> environment variable can
now be set to log private key material for off-line decryption
of SSL/TLS protocol dumps using third-party tools.</li>
</ul></dd>
<dt><code class="module"><a href="./mod/mod_cgid.html">mod_cgid</a></code></dt>
<dd>If configured with <code>--enable-cgid-fdpassing</code>, the
CGI daemon will set up stderr handling in the same way as
mod_cgi.</dd>
</dl>
</div><div class="top"><a href="#page-header"><img alt="top" src="./images/up.gif" /></a></div>
<div class="section">
<h2><a name="programs" id="programs">Program Enhancements</a> <a title="Permanent link" href="#programs" class="permalink">¶</a></h2>
<dl>
<dt><code class="program"><a href="./programs/htpasswd.html">htpasswd</a></code></dt>
<dd>The <code class="program"><a href="./programs/htpasswd.html">htpasswd</a></code> utility can now generate
SHA-256 or SHA-512 <code>crypt()</code> hashes where supported
by the C library.</dd>
</dl>
</div><div class="top"><a href="#page-header"><img alt="top" src="./images/up.gif" /></a></div>
<div class="section">
<h2><a name="documentation" id="documentation">Documentation</a> <a title="Permanent link" href="#documentation" class="permalink">¶</a></h2>
<dl>
<dt>Fill me in</dt>
<dd>The <code class="module"><a href="./mod/mod_example.html">mod_example</a></code> documentation fill me in.</dd>
</dl>
</div><div class="top"><a href="#page-header"><img alt="top" src="./images/up.gif" /></a></div>
<div class="section">
<h2><a name="developer" id="developer">Module Developer Changes</a> <a title="Permanent link" href="#developer" class="permalink">¶</a></h2>
<dl>
<dt>New type <code>ap_method_mask_t</code>.</dt>
<dd>The <code>ap_method_mask_t</code> type has been added and is
now used for the method_mask field in ap_method_list_t,
AP_METHOD_BIT, allowed field of request_rec, limited field of
cmd_parms.</dd>
<dt><code>mod_ssl.h</code> mod_ssl API changes.</dt>
<dd>The <code>ssl_var_lookup</code> optional function API now
takes a <code>const char *</code><em>name</em> argument and
returns a <code>const char *</code> string value. The pool
argument must now be non-NULL.</dd>
</dl>
<p>The developer documentation contains a
<a href="developer/new_api_2_6.html">detailed list of API changes</a>.</p>
</div></div>
<div class="bottomlang">
<p><span>Available Languages: </span><a href="./en/new_features_2_6.html" title="English"> en </a></p>
</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 Libera.chat, or sent to our <a href="https://httpd.apache.org/lists.html">mailing lists</a>.</div>
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