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From "Richard G Curry" <>
Subject RE: ISAPI Redirector Work-Flow
Date Tue, 02 Nov 2010 13:37:08 GMT
Another question, in particular about this:

"It's not a redirect.
The request data is converted to the AJP13 binary protocol which is received by an AJP connector
in Tomcat."

How is the request data passed? It is a Remore Procedure Call, an IP port connection, or something

Rick Curry
Common Services -  Software Development
E2 - 066, MS 5210
972-431-9178 (Voice)
972-585-7585 (Pager)
To send a (short) Text Message to my Pager:

-----Original Message-----
From: Pid [] 
Sent: Monday, November 01, 2010 5:40 PM
To: Tomcat Users List
Subject: Re: ISAPI Redirector Work-Flow

On 01/11/2010 21:48, Richard G Curry wrote:
> I am trying to understand how the ISAPI Redirector functions at an 
> overview level but deeper than this: The request comes into IIS where 
> the ISAPI Redirector filter sends the servlet and JSP requests to the 
> Tomcat server. I know the redirector works with AJP13 to redirect 
> requests to the Tomcat container. What I want to know is HOW that is 
> done. Is it a redirected HTTP request, a 301 redirect or is it a 
> port-to-port connection between the AJP13 processor and the defined 
> instance in the file?

It's not a redirect.
The request data is converted to the AJP13 binary protocol which is received by an AJP connector
in Tomcat.

> As this properties file defines
> the host name of the server holding the Tomcat instance, this can be 
> on a different server than the IIS server, correct?


> Then does AJP13
> 'connect' directly to the defined server ("localhost" in all the 
> examples I have seen) and the defined port ("8009" in the same 
> examples)?

The connector opens multiple connections to the Tomcat server.

> If you know of a diagram that shows how this works, please share the 
> link to that resouce.

I don't sorry.

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