Re: Apache mod_rewrite/mod_proxy conflict?

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Tamer Embaby wrote:
> I have the following simple setup:
> 
> [1] LoadModule rewrite_module modules/mod_rewrite.so
> [2] LoadModule proxy_module modules/mod_proxy.so
> [3] LoadModule proxy_http_module modules/mod_proxy_http.so
> [4] RewriteEngine on
> [5] ProxyPass /testing http://myserverB/
> [6] ProxyPassReverse /testing http://myserverB/
> [7] RewriteRule ^/(.*)$ http://myserverA/$1 [P]
> 
> My problem is:
> 
> When I access http://myserver/testing/index.html, it gets handled by the
> rewrite rule and not the proxy module.
> 
> The interesting point if I changed the order of LoadModule directives
> so now it reads:
> [1] LoadModule proxy_module modules/mod_proxy.so
> [2] LoadModule proxy_http_module modules/mod_proxy_http.so
> [3] LoadModule rewrite_module modules/mod_rewrite.so
> 
> The proxy module handles the request and not the rewrite module!
> 
> Is this behavior documented somewhere? Where can I read about it? I
> tried to Google a lot with no good. How can I control it?
> 
> Moreover, what if I compiled in the rewrite_mod and proxy_mod statically
> into Apache, how would I control the order of modules calling then?
> 
> I did my home work, scanned the FAQ, Googled but I cannot come up with
> any technical explanation for this.

Simple answer - don't mix them in this way (that's what I've been doing,
anyway)!  Stick to mod_rewrite and you should be fine:

RewriteRule ^/testing/(.*)$ http://myserverB/$1 [P,L]
RewriteRule ^/(.*)$ http://myserverA/$1 [P]
ProxyPassReverse /testing http://myserverB/

You can include:

RewriteRule      ^/testing$ /testing/ [R,L]

before the above if you want to handle a missing trailing slash.

HTH,


				Neil.

-- 
Neil Hillard                    neil.hillard@xxxxxxxxxxxxxxxxxx
AgustaWestland                  http://www.whl.co.uk/

Disclaimer: This message does not necessarily reflect the
            views of Westland Helicopters Ltd.

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