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Date: Tue, 05 May 2009 14:12:07 +0200
From: =?ISO-8859-1?Q?Andr=E9_Warnier?= <aw@ice-sa.com>
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Subject: Re: [users@httpd] Mod-rewrite+Mod_proxy+Mod_cache

Julien Gerhards wrote:
> Hi Andr�,
> 
> It doesn't made any change.

Well yes it does. $0 was wrong, $1 is right, to capture what you wanted 
to capture.  But I did not look further at the details.

> I cant see anything in the rewritelog

Then it means that this URL is not mtaching what you think it should.
I'm no expert at mod_rewrite, but let's try again :

RewriteRule ^/img=(.+)$ $1 [L,P]

(I'm not really sure of the flags above..)

Personally, I think your logic there is quite dangerous, because it 
basically allows miscreants to use your server as a proxy to anything 
and have you blamed for it, like if they use a URL like :

http://192.168.100.188/img=http://www.cia.gov.us/some/state/secret/file.doc

You should probably rather have them use a URL like
http://yourserver.company.com/img=/mbv/news/00509/nano_1yen.jpg

and then do something like

RewriteRule ^/img=(.+)$ http://otherserver.com/$1 [L,P]

so that /you/ control who is doing the bidouille, not them.

> 
> For the Url :
> http://192.168.100.188/img=http://files.macbidouille.com/mbv/news/00509/nano_1yen.jpg
> 
> Accesslog :
> 192.168.100.188 - - [05/May/2009:13:35:55 +0200] "GET /img=http://files.macbidouille.com/mbv/news/00509/nano_1yen.jpg HTTP/1.1" 400 684 "-" "Mozilla/5.0 (X11; U; Linux i686; fr; rv:1.9.0.6) Gecko/2009020414 CentOS/3.0.6-1.el5.centos Firefox/3.0.6"
> 
> [Tue May 05 13:36:08 2009] [debug] mod_proxy_http.c(1815): proxy: end body send
> [Tue May 05 13:36:08 2009] [debug] proxy_util.c(2062): proxy: HTTP: has released connection for (*)
> [Tue May 05 13:36:08 2009] [debug] mod_proxy_http.c(1726): proxy: start body send
> [Tue May 05 13:36:08 2009] [debug] mod_cache.c(528): cache: /img=http://files.macbidouille.com/mbv/news/00509/nano_1yen.jpg not cached. Reason: Response status 400
> 
> Httpd is looping on itself : urlrewrite doesnt work!
> 
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