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| author | Alexei Kosut <akosut@apache.org> | 1997-07-22 20:47:40 +0000 |
|---|---|---|
| committer | Alexei Kosut <akosut@apache.org> | 1997-07-22 20:47:40 +0000 |
| commit | a0fdad7bede074164d97370dda2be25ffe314dcd (patch) | |
| tree | f643e74b365a5548d17030abeea476a52b4951c9 /docs/manual/mod/mod_isapi.html | |
| parent | a885f518163a53ca1b93bd0ea736a98113f0d3b3 (diff) | |
| download | httpd-a0fdad7bede074164d97370dda2be25ffe314dcd.tar.gz | |
Add docs for mod_isapi
git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@78742 13f79535-47bb-0310-9956-ffa450edef68
Diffstat (limited to 'docs/manual/mod/mod_isapi.html')
| -rw-r--r-- | docs/manual/mod/mod_isapi.html | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/docs/manual/mod/mod_isapi.html b/docs/manual/mod/mod_isapi.html new file mode 100644 index 0000000000..5fde08c1a7 --- /dev/null +++ b/docs/manual/mod/mod_isapi.html @@ -0,0 +1,73 @@ +<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN"> +<HTML> +<HEAD> +<TITLE>Apache module mod_isapi</TITLE> +</HEAD> + +<!-- Background white, links blue (unvisited), navy (visited), red (active) --> +<BODY + BGCOLOR="#FFFFFF" + TEXT="#000000" + LINK="#0000FF" + VLINK="#000080" + ALINK="#FF0000" +> +<!--#include virtual="header.html" --> + +<H1 ALIGN="CENTER">Module mod_isapi</h1> + +<p>This module is contained in the <code>mod_isapi.c</code> file, and is + compiled in by default. It provides support for ISAPI Extensions when + running under Microsoft Windows. Any document with a handler of + <code>isapi-isa</code> will be processed by this module. + +<h2>Purpose</h2> + +<p>This module implements the <a + href="http://www.microsoft.com/win32dev/apiext/isapimrg.htm">ISAPI + Extension</a> API. It allows Internet Server Applications (i.e., ISAPI + Extensions) to be used with Apache for Windows. + +<h2>Usage</h2> + +<p>In the server configuration file, add a handler called + <code>isapi-isa</code>, and map it to files with a <code>.DLL</code> + extension. In other words:</p> +<pre> + AddHandler isapi-isa dll +</pre> +<p>Now simply place the ISA DLLs into your document root, and they will + be loaded when their URLs are accessed.</p> + +<p>ISAPI Extensions are governed by the same restrictions as CGI + scripts. That is, <code>Options ExecCGI</code> must be active in the + directory that contains the ISA.</p> + +<h2>Notes</h2> + +<p>Apache's ISAPI implementation conforms to all of the ISAPI 2.0 + specification, except for the "Microsoft-specific" extensions dealing + with ascynchronous 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 async I/O, a message will be place in the error log, + to help with debugging. + +<p>Some servers, like Microsoft IIS, load the ISA into the server, and + keep it loaded until memory usage is too high, and it is + unloaded. Apache currently loads and unloads the ISA for each + request. This is inefficient, but Apache's request model makes this + method the only method that currently works. A future release may use + a more effective loading method. + +<p>Apache 1.3a1 currently limits POST and PUT input to 48k per + request. This is to work around a problem with the ISAPI implementation + that could result in a denial of service attack. It is expected that + support for larger uploads will be added soon. + +<p>Also, remember that while Apache supports ISAPI Extensions, it does + not support ISAPI Filters. Support for filters may be added at a later + date, but no support is planned at this time.</p> + +<!--#include virtual="footer.html" --> +</BODY> +</HTML> |