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---><title>mod_isapi - Apache HTTP Server</title><link href="../style/manual.css" type="text/css" rel="stylesheet"/></head><body><blockquote><div align="center"><img alt="[APACHE DOCUMENTATION]" src="../images/sub.gif"/><h3>Apache HTTP Server Version 2.0</h3></div><h1 align="center">Apache Module mod_isapi</h1><table cellspacing="1" cellpadding="0" bgcolor="#cccccc"><tr><td><table bgcolor="#ffffff"><tr><td valign="top"><span class="help">Description:</span></td><td>ISAPI Extensions within Apache for Windows</td></tr><tr><td><a href="module-dict.html#Status" class="help">Status:</a></td><td>Base</td></tr><tr><td><a href="module-dict.html#ModuleIdentifier" class="help">Module Identifier:</a></td><td>isapi_module</td></tr><tr><td align="left" valign="top"><a href="module-dict.html#Compatibility" class="help">Compatibility:</a></td><td><compatibility>Win32 only</compatibility></td></tr></table></td></tr></table><h2>Summary</h2>
- <p>This module implements the Internet Server extension API. It
- allows Internet Server extensions (<em>e.g.</em> ISAPI .dll
- modules) to be served by Apache for Windows, subject to the
- noted restrictions.</p>
+# GENERATED FROM XML -- DO NOT EDIT
- <p>ISAPI extension modules (.dll files) are written by third
- parties. The Apache Group does not author these modules, so we
- provide no support for them. Please contact the ISAPI's author
- directly if you are experiencing problems running their ISAPI
- extention. <strong>Please <em>do not</em> post such problems to
- Apache's lists or bug reporting pages.</strong></p>
-<h2>Directives</h2><ul><li><a href="#isapiappendlogtoerrors">ISAPIAppendLogToErrors</a></li><li><a href="#isapiappendlogtoquery">ISAPIAppendLogToQuery</a></li><li><a href="#isapifilechache">ISAPIFileChache</a></li><li><a href="#isapilognotsupported">ISAPILogNotSupported</a></li><li><a href="#isapireadaheadbuffer">ISAPIReadAheadBuffer</a></li></ul><h2>Usage</h2> <p>In the server configuration file, use
-the <a href="mod_mime.html#addhandler" class="directive"><code class="directive">AddHandler</code></a> directive to
-associate ISAPI files with the <code>isapi-isa</code> handler, and map
-it to the with their file extensions. To enable any .dll file to be
-processed as an ISAPI extention, edit the httpd.conf file and add the
-following line:</p>
-<blockquote><table cellpadding="10"><tr><td bgcolor="#eeeeee"><code>
- AddHandler isapi-isa .dll
-</code></td></tr></table></blockquote>
+URI: mod_isapi.html.en
+Content-Language: en
+Content-type: text/html; charset=ISO-8859-1
- <p>There is no capability within the Apache server to leave a
- requested module loaded. However, you may preload and keep a
- specific module loaded by using the following syntax in your
- httpd.conf:</p>
-<blockquote><table cellpadding="10"><tr><td bgcolor="#eeeeee"><code>
- ISAPICacheFile c:/WebWork/Scripts/ISAPI/mytest.dll
-</code></td></tr></table></blockquote>
+URI: mod_isapi.html.fr
+Content-Language: fr
+Content-type: text/html; charset=ISO-8859-1
- <p>Whether or not you have preloaded an ISAPI extension, all
- ISAPI extensions are governed by the same permissions and
- restrictions as CGI scripts. That is, <code>Options
- ExecCGI</code> must be set for the directory that contains the
- ISAPI .dll file.</p>
-
- <p>Review the <a href="#notes">Additional Notes</a> and the <a href="#journal">Programmer's Journal</a> for additional details
- and clarification of the specific ISAPI support offered by
- mod_isapi.</p>
-<h2><a name="notes">Additional Notes</a></h2>
-
- <p>Apache's ISAPI implementation conforms to all of the ISAPI
- 2.0 specification, except for some "Microsoft-specific"
- extensions dealing with asynchronous I/O. Apache's I/O model
- does not allow asynchronous reading and writing in a manner
- that the ISAPI could access. If an ISA tries to access
- unsupported features, including async I/O, a message is placed
- in the error log to help with debugging. Since these messages
- can become a flood, the directive <code>ISAPILogNotSupported
- Off</code> exists to quiet this noise.</p>
-
- <p>Some servers, like Microsoft IIS, load the ISAPI extension
- into the server and keep it loaded until memory usage is too
- high, or unless configuration options are specified. Apache
- currently loads and unloads the ISAPI extension each time it is
- requested, unless the ISAPICacheFile directive is specified.
- This is inefficient, but Apache's memory model makes this the
- most effective method. Many ISAPI modules are subtly
- incompatible with the Apache server, and unloading these
- modules helps to ensure the stability of the server.</p>
-
- <p>Also, remember that while Apache supports ISAPI Extensions,
- it <strong>does not support ISAPI Filters.</strong> Support for
- filters may be added at a later date, but no support is planned
- at this time.</p>
-<h2><a name="journal">Programmer's Journal</a></h2>
-
- <p>If you are programming Apache 2.0 <code><a href="mod_isapi.html">mod_isapi</a></code>
- modules, you must limit your calls to ServerSupportFunction to the
- following directives:</p>
-
- <dl>
- <dt>HSE_REQ_SEND_URL_REDIRECT_RESP</dt>
-
- <dd>Redirect the user to another location.<br>
- This must be a fully qualified URL (e.g.
- http://server/location).</dd>
-
- <dt>HSE_REQ_SEND_URL</dt>
-
- <dd>Redirect the user to another location.<br>
- This cannot be a fully qualified URL, you are not allowed to
- pass the protocol or a server name (e.g. simply
- /location).<br>
- This redirection is handled by the server, not the
- browser.<br>
- <strong>Warning:</strong> in their recent documentation,
- Microsoft appears to have abandoned the distinction between
- the two HSE_REQ_SEND_URL functions. Apache continues to treat
- them as two distinct functions with different requirements
- and behaviors.</dd>
-
- <dt>HSE_REQ_SEND_RESPONSE_HEADER</dt>
-
- <dd>Apache accepts a response body following the header if it
- follows the blank line (two consecutive newlines) in the
- headers string argument. This body cannot contain NULLs,
- since the headers argument is NULL terminated.</dd>
-
- <dt>HSE_REQ_DONE_WITH_SESSION</dt>
-
- <dd>Apache considers this a no-op, since the session will be
- finished when the ISAPI returns from processing.</dd>
-
- <dt>HSE_REQ_MAP_URL_TO_PATH</dt>
-
- <dd>Apache will translate a virtual name to a physical
- name.</dd>
-
- <dt>HSE_APPEND_LOG_PARAMETER</dt>
-
- <dd>
- This logged message may be captured in any of the following
- logs:
-
- <ul>
- <li>in the \"%{isapi-parameter}n\" component in a
- CustomLog directive</li>
-
- <li>in the %q log component with the
- ISAPIAppendLogToQuery On directive</li>
-
- <li>in the error log with the ISAPIAppendLogToErrors On
- directive</li>
- </ul>
- The first option, the %{isapi-parameter}n component, is
- always available and prefered.
- </dd>
-
- <dt>HSE_REQ_IS_KEEP_CONN</dt>
-
- <dd>Will return the negotiated Keep-Alive status.</dd>
-
- <dt>HSE_REQ_SEND_RESPONSE_HEADER_EX</dt>
-
- <dd>Will behave as documented, although the fKeepConn flag is
- ignored.</dd>
-
- <dt>HSE_REQ_IS_CONNECTED</dt>
-
- <dd>Will report false if the request has been aborted.</dd>
- </dl>
-
- <p>Apache returns FALSE to any unsupported call to
- ServerSupportFunction, and sets the GetLastError value to
- ERROR_INVALID_PARAMETER.</p>
-
- <p>ReadClient retrieves the request body exceeding the initial
- buffer (defined by ISAPIReadAheadBuffer). Based on the
- ISAPIReadAheadBuffer setting (number of bytes to buffer prior
- to calling the ISAPI handler) shorter requests are sent
- complete to the extension when it is invoked. If the request is
- longer, the ISAPI extension must use ReadClient to retrieve the
- remaining request body.</p>
-
- <p>WriteClient is supported, but only with the HSE_IO_SYNC flag
- or no option flag (value of 0). Any other WriteClient request
- will be rejected with a return value of FALSE, and a
- GetLastError value of ERROR_INVALID_PARAMETER.</p>
-
- <p>GetServerVariable is supported, although extended server
- variables do not exist (as defined by other servers.) All the
- usual Apache CGI environment variables are available from
- GetServerVariable, as well as the ALL_HTTP and ALL_RAW
- values.</p>
-
- <p>Apache 2.0 <code><a href="mod_isapi.html">mod_isapi</a></code> supports additional
- features introduced in later versions of the ISAPI specification,
- as well as limited emulation of async I/O and the TransmitFile
- semantics. Apache also supports preloading ISAPI .dlls for
- performance, neither of which were not available under Apache 1.3
- mod_isapi.</p>
-<hr/><h2><a name="ISAPIAppendLogToErrors">ISAPIAppendLogToErrors</a> <a name="isapiappendlogtoerrors">Directive</a></h2><table cellpadding="1" cellspacing="0" border="0" bgcolor="#cccccc"><tr><td><table bgcolor="#ffffff"><tr><td><strong>Description: </strong></td><td>Record HSE_APPEND_LOG_PARAMETER requests from ISAPI
-extensions to the error log</td></tr><tr><td><a href="directive-dict.html#Syntax" class="help">Syntax:</a></td><td>ISAPIAppendLogToErrors on|off</td></tr><tr><td><a href="directive-dict.html#Default" class="help">Default:</a></td><td><code>ISAPIAppendLogToErrors off</code></td></tr><tr><td><a href="directive-dict.html#Context" class="help">Context:</a></td><td>server config</td></tr><tr><td><a href="directive-dict.html#Status" class="help">Status:</a></td><td>Base</td></tr><tr><td><a href="directive-dict.html#Module" class="help">Module:</a></td><td>mod_isapi</td></tr></table></td></tr></table>
- <p>Record HSE_APPEND_LOG_PARAMETER requests from ISAPI
- extensions to the server error log.</p>
-<hr/><h2><a name="ISAPIAppendLogToQuery">ISAPIAppendLogToQuery</a> <a name="isapiappendlogtoquery">Directive</a></h2><table cellpadding="1" cellspacing="0" border="0" bgcolor="#cccccc"><tr><td><table bgcolor="#ffffff"><tr><td><strong>Description: </strong></td><td>Record HSE_APPEND_LOG_PARAMETER requests from ISAPI
-extensions to the query field</td></tr><tr><td><a href="directive-dict.html#Syntax" class="help">Syntax:</a></td><td>ISAPIAppendLogToQuery on|off</td></tr><tr><td><a href="directive-dict.html#Default" class="help">Default:</a></td><td><code>ISAPIAppendLogToQuery off</code></td></tr><tr><td><a href="directive-dict.html#Context" class="help">Context:</a></td><td>server config</td></tr><tr><td><a href="directive-dict.html#Status" class="help">Status:</a></td><td>Base</td></tr><tr><td><a href="directive-dict.html#Module" class="help">Module:</a></td><td>mod_isapi</td></tr></table></td></tr></table>
- <p>Record HSE_APPEND_LOG_PARAMETER requests from ISAPI
- extensions to the query field (appended to the CustomLog %q
- component).</p>
-<hr/><h2><a name="ISAPIFileChache">ISAPIFileChache</a> <a name="isapifilechache">Directive</a></h2><table cellpadding="1" cellspacing="0" border="0" bgcolor="#cccccc"><tr><td><table bgcolor="#ffffff"><tr><td><strong>Description: </strong></td><td>ISAPI .dll files to be loaded at startup</td></tr><tr><td><a href="directive-dict.html#Syntax" class="help">Syntax:</a></td><td>ISAPIFileCache <em>file-path</em> [<em>file-path</em>] ...</td></tr><tr><td><a href="directive-dict.html#Context" class="help">Context:</a></td><td>server config</td></tr><tr><td><a href="directive-dict.html#Status" class="help">Status:</a></td><td>Base</td></tr><tr><td><a href="directive-dict.html#Module" class="help">Module:</a></td><td>mod_isapi</td></tr></table></td></tr></table>
- <p>Specifies a space-separated list of file names to be loaded
- when the Apache server is launched, and remain loaded until the
- server is shut down. This directive may be repeated for every
- ISAPI .dll file desired. The full path name of each file should
- be specified.</p>
-<hr/><h2><a name="ISAPILogNotSupported">ISAPILogNotSupported</a> <a name="isapilognotsupported">Directive</a></h2><table cellpadding="1" cellspacing="0" border="0" bgcolor="#cccccc"><tr><td><table bgcolor="#ffffff"><tr><td><strong>Description: </strong></td><td>Log unsupported feature requests from ISAPI
-extensions</td></tr><tr><td><a href="directive-dict.html#Syntax" class="help">Syntax:</a></td><td>ISAPILogNotSupported on|off</td></tr><tr><td><a href="directive-dict.html#Default" class="help">Default:</a></td><td><code>ISAPILogNotSupported on</code></td></tr><tr><td><a href="directive-dict.html#Context" class="help">Context:</a></td><td>server config</td></tr><tr><td><a href="directive-dict.html#Status" class="help">Status:</a></td><td>Base</td></tr><tr><td><a href="directive-dict.html#Module" class="help">Module:</a></td><td>mod_isapi</td></tr></table></td></tr></table>
- <p>Logs all requests for unsupported features from ISAPI
- extensions in the server error log. While this should be turned
- off once all desired ISAPI modules are functioning, it defaults
- to on to help administrators track down problems.</p>
-<hr/><h2><a name="ISAPIReadAheadBuffer">ISAPIReadAheadBuffer</a> <a name="isapireadaheadbuffer">Directive</a></h2><table cellpadding="1" cellspacing="0" border="0" bgcolor="#cccccc"><tr><td><table bgcolor="#ffffff"><tr><td><strong>Description: </strong></td><td>Size of the Read Ahead Buffer sent to ISAPI
-extensions</td></tr><tr><td><a href="directive-dict.html#Syntax" class="help">Syntax:</a></td><td>ISAPIReadAheadBuffer <em>size</em></td></tr><tr><td><a href="directive-dict.html#Default" class="help">Default:</a></td><td><code>ISAPIReadAheadBuffer 49152</code></td></tr><tr><td><a href="directive-dict.html#Context" class="help">Context:</a></td><td>server config</td></tr><tr><td><a href="directive-dict.html#Status" class="help">Status:</a></td><td>Base</td></tr><tr><td><a href="directive-dict.html#Module" class="help">Module:</a></td><td>mod_isapi</td></tr></table></td></tr></table>
- <p>Defines the maximum size of the Read Ahead Buffer sent to
- ISAPI extensions when they are initially invoked. All remaining
- data must be retrieved using the ReadClient callback; some
- ISAPI extensions may not support the ReadClient function. Refer
- questions to the ISAPI extension's author.</p>
-<hr/><h3 align="center">Apache HTTP Server Version 2.0</h3><a href="./"><img alt="Index" src="../images/index.gif"/></a><a href="../"><img alt="Home" src="../images/home.gif"/></a></blockquote></body></html>
\ No newline at end of file
+URI: mod_isapi.html.ko.euc-kr
+Content-Language: ko
+Content-type: text/html; charset=EUC-KR
projects / apache / blobdiff