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<title>Developer Documentation for the Apache HTTP Server 2.4 - Apache HTTP Server Version 2.4</title>
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<p class="apache">Apache HTTP Server Version 2.4</p>
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<a href="http://www.apache.org/">Apache</a> &gt; <a href="http://httpd.apache.org/">HTTP Server</a> &gt; <a href="http://httpd.apache.org/docs/">Documentation</a> &gt; <a href="../">Version 2.4</a></div><div id="page-content"><div id="preamble"><h1>Developer Documentation for the Apache HTTP Server 2.4</h1>
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    <div class="warning"><h3>Warning</h3>
    <p>Many of the documents listed here are in need of update.
    They are in different stages of progress.
    Please be patient and follow <a href="https://httpd.apache.org/docs-project/">this link</a>
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<li><img alt="" src="../images/down.gif" /> <a href="#upgrading">Upgrading to 2.4</a></li>
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<h2><a name="developing" id="developing">2.4 development documents</a></h2>
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      <li><a href="modguide.html">Developing modules for the Apache HTTP Server 2.4</a></li>
      <li><a href="hooks.html">Hook Functions in 2.4</a></li>
      <li><a href="request.html">Request Processing in 2.4</a></li>
      <li><a href="filters.html">How filters work in 2.4</a></li>
      <li><a href="output-filters.html">Guidelines for output filters in 2.4</a></li>
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<h2><a name="upgrading" id="upgrading">Upgrading to 2.4</a></h2>
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      <li><a href="new_api_2_4.html">API changes in 2.3/2.4</a></li>
      <li><a href="modules.html">Converting Modules from 1.3 to 2.x</a></li>
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<h2><a name="external" id="external">Other Resources</a></h2>
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      <li><a href="http://ci.apache.org/projects/httpd/trunk/doxygen/">Autogenerated Apache HTTP Server (trunk) code documentation</a> (the link is built by
        this <a href="https://ci.apache.org/builders/httpd-doxygen-nightly">job</a>).
      </li>

      <li>Developer articles at <a href="http://www.apachetutor.org/">apachetutor</a> include:
      <ul>
        <li><a href="http://www.apachetutor.org/dev/request">Request Processing</a></li>
        <li><a href="http://www.apachetutor.org/dev/config">Configuration for Modules</a></li>
        <li><a href="http://www.apachetutor.org/dev/pools">Resource Management</a></li>
        <li><a href="http://www.apachetutor.org/dev/reslist">Connection Pooling</a></li>
        <li><a href="http://www.apachetutor.org/dev/brigades">Introduction to Buckets and Brigades</a></li>
      </ul></li>
      <li><a href="https://bz.apache.org/bugzilla/enter_bug.cgi?product=Apache%20httpd-2">Report a bug or feature request</a></li>
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