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70 lines
2.7 KiB
XML
70 lines
2.7 KiB
XML
<?xml version="1.0" encoding="UTF-8" ?>
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<!DOCTYPE manualpage SYSTEM "./style/manualpage.dtd">
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<?xml-stylesheet type="text/xsl" href="./style/manual.en.xsl"?>
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<manualpage>
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<relativepath href="."/>
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<title>Filters</title>
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<summary>
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<p>This document describes the use of filters in Apache.</p>
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</summary>
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<section id="filters">
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<title>Filters</title>
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<related>
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<modulelist>
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<module>mod_deflate</module>
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<module>mod_ext_filter</module>
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<module>mod_include</module>
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</modulelist>
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<directivelist>
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<directive module="mod_mime">AddInputFilter</directive>
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<directive module="mod_mime">AddOutputFilter</directive>
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<directive module="mod_mime">RemoveInputFilter</directive>
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<directive module="mod_mime">RemoveOutputFilter</directive>
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<directive module="mod_ext_filter">ExtFilterDefine</directive>
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<directive module="mod_ext_filter">ExtFilterOptions</directive>
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<directive module="core">SetInputFilter</directive>
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<directive module="core">SetOutputFilter</directive>
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</directivelist>
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</related>
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<p>A <em>filter</em> is a process that is applied to data that
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is sent or received by the server. Data sent by clients to the
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server is processed by <em>input filters</em> while data sent
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by the server to the client is processed by <em>output
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filters</em>. Multiple filters can be applied to the data, and
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the order of the filters can be explicitly specified.</p>
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<p>Filters are used internally by Apache to perform functions such
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as chunking and byte-range request handling. In addition, modules
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can provide filters that are selectable using run-time
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configuration directives. The set of filters that apply to data
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can be manipulated with the
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<directive module="core">SetInputFilter</directive>,
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<directive module="core">SetOutputFilter</directive>,
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<directive module="mod_mime">AddInputFilter</directive>,
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<directive module="mod_mime">AddOutputFilter</directive>,
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<directive module="mod_mime">RemoveInputFilter</directive>, and
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<directive module="mod_mime">RemoveOutputFilter</directive>
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directives.</p>
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<p>The following user-selectable filters are currently provided
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with the Apache HTTP Server distribution.</p>
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<dl>
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<dt>INCLUDES</dt>
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<dd>Server-Side Includes processing by <module>mod_include</module></dd>
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<dt>DEFLATE</dt>
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<dd>Compress output before sending it to the client using
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<module>mod_deflate</module>
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</dd>
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</dl>
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<p>In addition, the module <module>mod_ext_filter</module> allows
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for external programs to be defined as filters.</p>
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</section>
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</manualpage>
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