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-<title>Apache's Handler Use - Apache HTTP Server</title>
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-<p class="apache">Apache HTTP Server Version 2.0</p>
-<img alt="" src="./images/feather.gif" /></div>
-<div class="up"><a href="./"><img title="<-" alt="<-" src="./images/left.gif" /></a></div>
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-<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 2.0</a></div><div id="page-content"><div id="preamble"><h1>Apache's Handler Use</h1>
-<div class="toplang">
-<p><span>Available Languages: </span><a href="./en/handler.html" title="English"> en </a> |
-<a href="./es/handler.html" hreflang="es" rel="alternate" title="Español"> es </a> |
-<a href="./fr/handler.html" hreflang="fr" rel="alternate" title="Français"> fr </a> |
-<a href="./ja/handler.html" hreflang="ja" rel="alternate" title="Japanese"> ja </a> |
-<a href="./ko/handler.html" hreflang="ko" rel="alternate" title="Korean"> ko </a> |
-<a href="./ru/handler.html" hreflang="ru" rel="alternate" title="Russian"> ru </a> |
-<a href="./tr/handler.html" hreflang="tr" rel="alternate" title="Türkçe"> tr </a></p>
-</div>
-
- <p>This document describes the use of Apache's Handlers.</p>
- </div>
-<div id="quickview"><ul id="toc"><li><img alt="" src="./images/down.gif" /> <a href="#definition">What is a Handler</a></li>
-<li><img alt="" src="./images/down.gif" /> <a href="#examples">Examples</a></li>
-<li><img alt="" src="./images/down.gif" /> <a href="#programmer">Programmer's Note</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="definition" id="definition">What is a Handler</a></h2>
-
- <table class="related"><tr><th>Related Modules</th><th>Related Directives</th></tr><tr><td><ul><li><code class="module"><a href="./mod/mod_actions.html">mod_actions</a></code></li><li><code class="module"><a href="./mod/mod_asis.html">mod_asis</a></code></li><li><code class="module"><a href="./mod/mod_cgi.html">mod_cgi</a></code></li><li><code class="module"><a href="./mod/mod_imap.html">mod_imap</a></code></li><li><code class="module"><a href="./mod/mod_info.html">mod_info</a></code></li><li><code class="module"><a href="./mod/mod_mime.html">mod_mime</a></code></li><li><code class="module"><a href="./mod/mod_negotiation.html">mod_negotiation</a></code></li><li><code class="module"><a href="./mod/mod_status.html">mod_status</a></code></li></ul></td><td><ul><li><code class="directive"><a href="./mod/mod_actions.html#action">Action</a></code></li><li><code class="directive"><a href="./mod/mod_mime.html#addhandler">AddHandler</a></code></li><li><code class="directive"><a href="./mod/mod_mime.html#removehandler">RemoveHandler</a></code></li><li><code class="directive"><a href="./mod/core.html#sethandler">SetHandler</a></code></li></ul></td></tr></table>
-
-
- <p>A "handler" is an internal Apache representation of the
- action to be performed when a file is called. Generally, files
- have implicit handlers, based on the file type. Normally, all
- files are simply served by the server, but certain file types
- are "handled" separately.</p>
-
- <p>Apache 1.1 adds the ability to use handlers explicitly.
- Based on either filename extensions or on location, handlers
- can be specified without relation to file type. This is
- advantageous both because it is a more elegant solution, and
- because it also allows for both a type <strong>and</strong> a
- handler to be associated with a file. (See also <a href="mod/mod_mime.html#multipleext">Files with Multiple
- Extensions</a>.)</p>
-
- <p>Handlers can either be built into the server or included in
- a module, or they can be added with the <code class="directive"><a href="./mod/mod_actions.html#action">Action</a></code> directive. The
- built-in handlers in the standard distribution are as
- follows:</p>
-
- <ul>
- <li><strong>default-handler</strong>: Send the file using the
- <code>default_handler()</code>, which is the handler used by
- default to handle static content. (core)</li>
-
- <li><strong>send-as-is</strong>: Send file with HTTP headers
- as is. (<code class="module"><a href="./mod/mod_asis.html">mod_asis</a></code>)</li>
-
- <li><strong>cgi-script</strong>: Treat the file as a CGI
- script. (<code class="module"><a href="./mod/mod_cgi.html">mod_cgi</a></code>)</li>
-
- <li><strong>imap-file</strong>: Parse as an imagemap rule
- file. (<code class="module"><a href="./mod/mod_imap.html">mod_imap</a></code>)</li>
-
- <li><strong>server-info</strong>: Get the server's
- configuration information. (<code class="module"><a href="./mod/mod_info.html">mod_info</a></code>)</li>
-
- <li><strong>server-status</strong>: Get the server's status
- report. (<code class="module"><a href="./mod/mod_status.html">mod_status</a></code>)</li>
-
- <li><strong>type-map</strong>: Parse as a type map file for
- content negotiation. (<code class="module"><a href="./mod/mod_negotiation.html">mod_negotiation</a></code>)</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="examples" id="examples">Examples</a></h2>
-
-
- <h3><a name="example1" id="example1">Modifying static content using a CGI script</a></h3>
-
-
- <p>The following directives will cause requests for files with
- the <code>html</code> extension to trigger the launch of the
- <code>footer.pl</code> CGI script.</p>
-
- <div class="example"><p><code>
- Action add-footer /cgi-bin/footer.pl<br />
- AddHandler add-footer .html
- </code></p></div>
-
- <p>Then the CGI script is responsible for sending the
- originally requested document (pointed to by the
- <code>PATH_TRANSLATED</code> environment variable) and making
- whatever modifications or additions are desired.</p>
-
-
- <h3><a name="example2" id="example2">Files with HTTP headers</a></h3>
-
-
- <p>The following directives will enable the
- <code>send-as-is</code> handler, which is used for files which
- contain their own HTTP headers. All files in the
- <code>/web/htdocs/asis/</code> directory will be processed by
- the <code>send-as-is</code> handler, regardless of their
- filename extensions.</p>
-
- <div class="example"><p><code>
- <Directory /web/htdocs/asis><br />
- SetHandler send-as-is<br />
- </Directory>
- </code></p></div>
-
-
- </div><div class="top"><a href="#page-header"><img alt="top" src="./images/up.gif" /></a></div>
-<div class="section">
-<h2><a name="programmer" id="programmer">Programmer's Note</a></h2>
-
-
- <p>In order to implement the handler features, an addition has
- been made to the <a href="developer/API.html">Apache API</a> that
- you may wish to make use of. Specifically, a new record has
- been added to the <code>request_rec</code> structure:</p>
-
- <div class="example"><p><code>
- char *handler
- </code></p></div>
-
- <p>If you wish to have your module engage a handler, you need
- only to set <code>r->handler</code> to the name of the
- handler at any time prior to the <code>invoke_handler</code>
- stage of the request. Handlers are implemented as they were
- before, albeit using the handler name instead of a content
- type. While it is not necessary, the naming convention for
- handlers is to use a dash-separated word, with no slashes, so
- as to not invade the media type name-space.</p>
- </div></div>
-<div class="bottomlang">
-<p><span>Available Languages: </span><a href="./en/handler.html" title="English"> en </a> |
-<a href="./es/handler.html" hreflang="es" rel="alternate" title="Español"> es </a> |
-<a href="./fr/handler.html" hreflang="fr" rel="alternate" title="Français"> fr </a> |
-<a href="./ja/handler.html" hreflang="ja" rel="alternate" title="Japanese"> ja </a> |
-<a href="./ko/handler.html" hreflang="ko" rel="alternate" title="Korean"> ko </a> |
-<a href="./ru/handler.html" hreflang="ru" rel="alternate" title="Russian"> ru </a> |
-<a href="./tr/handler.html" hreflang="tr" rel="alternate" title="Türkçe"> tr </a></p>
-</div><div id="footer">
-<p class="apache">Copyright 2009 The Apache Software Foundation.<br />Licensed under the <a href="http://www.apache.org/licenses/LICENSE-2.0">Apache License, Version 2.0</a>.</p>
-<p class="menu"><a href="./mod/">Modules</a> | <a href="./mod/directives.html">Directives</a> | <a href="./faq/">FAQ</a> | <a href="./glossary.html">Glossary</a> | <a href="./sitemap.html">Sitemap</a></p></div>
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