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- --><title>Apache's Handler Use - Apache HTTP Server</title><link href="./style/css/manual.css" rel="stylesheet" media="all" type="text/css" title="Main stylesheet" /><link href="./style/css/manual-loose-100pc.css" rel="alternate stylesheet" media="all" type="text/css" title="No Sidebar - Default font size" /><link href="./images/favicon.ico" rel="shortcut icon" /></head><body id="manual-page"><div id="page-header"><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><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><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-project/">Documentation</a> > <a href="./">Version 2.0</a></div><div id="page-content"><div id="preamble"><h1>Apache's Handler Use</h1>
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+<a href="./fr/handler.html" hreflang="fr" rel="alternate" title="Français"> fr </a> |
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+<a href="./zh-cn/handler.html" hreflang="zh-cn" rel="alternate" title="Simplified Chinese"> zh-cn </a></p>
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+
<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/mod_mime.html#sethandler">SetHandler</a></code></li></ul></td></tr></table>
+ </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><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="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_imagemap.html">mod_imagemap</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
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
+ <p>Handlers may also be configured explicitly,
+ based on either filename extensions or on location,
+ 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
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>
+ file. (<code class="module"><a href="./mod/mod_imagemap.html">mod_imagemap</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>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>
+ </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>
+
+ <pre class="prettyprint lang-config">Action add-footer /cgi-bin/footer.pl
+AddHandler add-footer .html</pre>
+
<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>
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>
-
+ <pre class="prettyprint lang-config"><Directory "/web/htdocs/asis">
+ SetHandler send-as-is
+</Directory></pre>
+
+
- </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>
+ </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
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>
+ <pre class="prettyprint lang-c">char *handler</pre>
+
<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
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>
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+<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="./tr/handler.html" hreflang="tr" rel="alternate" title="Türkçe"> tr </a> |
+<a href="./zh-cn/handler.html" hreflang="zh-cn" rel="alternate" title="Simplified Chinese"> zh-cn </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 again 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 Freenode, or sent to our <a href="http://httpd.apache.org/lists.html">mailing lists</a>.</div>
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