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From "Martin Gainty" <mgai...@hotmail.com>
Subject Re: obtain X-Forwarded-for: client-IP-address in access logs
Date Fri, 03 Nov 2006 22:14:01 GMT
you can acquire the local IP (%A) and remote IP (%a) if you implement AccessLogValve
http://tomcat.apache.org/tomcat-5.0-doc/catalina/docs/api/org/apache/catalina/valves/AccessLogValve.html

M-
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----- Original Message ----- 
From: "Maurice Yarrow" <yarrow@best.com>
To: "Tomcat Users List" <users@tomcat.apache.org>
Sent: Friday, November 03, 2006 4:23 PM
Subject: obtain X-Forwarded-for: client-IP-address in access logs


> Hello Tomcat community
> 
> I have tomcat (5.0.28) running behind pound (2.1.3) 
> reverse-proxy-load-balancer.
> 
> This is a very effective setup, as I have pound also fronting apache and 
> mongrel-rails
> clusters.
> 
> Question:
> Pound adds the following to its request to backend servers:
>     X-Forwarded-for: client-IP-address
> 
> I would like to be able to obtain this client-IP address in the tomcat 
> access logs.
> I tried all available formats (%a,  %A,  %b,  %B,  etc.,etc.) for the 
> logger pattern,
> but of course, none produced the client IP address placed in the request by
> Pound. 
> 
> I could, of course, grep through the Pound log output which, by default, 
> winds
> up on /var/log/messages, but would rather just be able to see this in the
> tomcat access log.
> 
> How could I, say, derive my own logger class and capture this header 
> info that
> pound places in the request to backend server ??
> 
> Is there a simpler way ?   Am I unaware of a direct way to do this ?
> 
> Maurice Yarrow
> 
> 
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