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From Randy Layman <>
Subject RE: Configuring Isapi Redirector with IIS
Date Wed, 14 Feb 2001 15:11:13 GMT

	It seems to me like there might be several things wrong.

	First, check your file.  It seems like you might
not have the ajp12 worker defined or maybe defined incorrectly.  Next, check
the registry entry for the file.
	Second, look at your filter.  The executable for the filter needs to
be isapi_redirect.dll (the message looks like it might not point to the dll,
just the directory).
	If that doesn't do it, I would suggest trying a new DLL, after the
Windows NT fix-all - reboot.


-----Original Message-----
From: Eli Segev []
Sent: Wednesday, February 14, 2001 10:30 AM
Subject: Configuring Isapi Redirector with IIS

I have followed the instructions in "Tomcat IIS HowTo" by Gal Shachor
<> to set up IIS to redirect requests to Tomcat on an
NT machine.  I don't want to repeat again all the steps that appears in
the document in this email.  Whenever I try to test the redirection of
requests from IIS to Tomcat, I get an error.  It appears in the "Event
Viewer" as: "The HTTP Filter DLL E:\Programs\jakarta-tomcat\bin\iis\i386
failed to load.  The data is the error.".

The isapi.log has

[jk_isapi_plugin.c (385)]: In HttpFilterProc test redirection of
[jk_uri_worker_map.c (286)]: Into jk_uri_worker_map_t::map_uri_to_worker

[jk_uri_worker_map.c (338)]: jk_uri_worker_map_t::uri_worker_map_open,
done with ajp12
[jk_isapi_plugin.c (395)]: In HttpFilterProc /examples/jsp/index.html
should redirect to ajp12
[jk_uri_worker_map.c (127)]: Into
[jk_uri_worker_map.c (273)]: Into
[jk_uri_worker_map.c (278)]: jk_uri_worker_map_t::uri_worker_map_close,
NULL parameter
[jk_uri_worker_map.c (134)]: In
jk_uri_worker_map_t::uri_worker_map_free, NULL parameters
[jk_worker.c (125)]: Into wc_close
[jk_worker.c (127)]: wc_close, done

C:\WINNT\system32\LogFiles\W3SVC1\ex010214.log has:

2001-02-14 15:08:59 - W3SVC1 BISUT GET
/jakarta/isapi_redirect.dll - 401 80 HTTP/1.0
Mozilla/4.7+[en]+(WinNT;+I) -

The operation crashes IIS and I get the following error (see

Does anyone know what is wrong here?  The error is 401 which is not
covered in the troubleshooting section for WinNT.  The IIS version is
4.0 and Tomcat is 3.1.

Eli Segev

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