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From Joshua Slive <>
Subject Re: [users@httpd] Not Logging Proxy Requests
Date Sat, 18 Jun 2005 00:45:40 GMT
On 6/17/05, Tim Traver <> wrote:

> Joshua,
> actually, PROXY_ADDR is an environment variable that is created by
> mod_extract_forwarded...

It is possible that this module is setting the variable too late in
request processing for mod_setenif to get at it.

> But, HTTP_X_FORWARDED_FOR is a header that is sent with the request from the
> proxy machine to the destination. I have also tried to use this variable,
> but to no avail...
> On your recommendation I tried HTTP-X-FORWARDED-FOR, but that doesn't work
> either.

Read the docs for SetEnvIf.  You'll see that you don't need the HTTP-
prefix for headers.  It is just X-Forwarded-For, exactly as sent by
the client.

> If what you said is true (that the headers have dashes instead of
> underscores, then how is it that SetEnvIf works using Remote_Addr ???

Because that isn't a request header, it is a variable created
specially by mod_setenvif.


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