[users@httpd] mod_deflate w/reverse proxy

[Serge Knystautas <sergek@xxxxxxxxxxxx>]

I'm having trouble using mod_deflate to compress content that is going 
through my reverse proxy using apache 2.0.46.  All requests go to a 
default virtual host, and then I use RewriteConf/RewriteRule [P] to 
carve off certain hostnames to reverse proxy to another webserver.  We 
use this approach for testing, so normally everyone sees the regular set 
of files, but before deploying I can setup special hostnames to see a 
newer site version.

Configuration looks like this...

UseCanonicalName Off
AddOutputFilterByType DEFLATE text/html text/plain text/xml

<VirtualHost *>
  DocumentRoot /foobar
  ServerName www.lokitech.com

  ProxyRequests Off
  <Proxy *>
    Order deny,allow
    Allow from all
  </Proxy>

  RewriteEngine On
  RewriteCond %{HTTP_HOST} \.lokitech\.com [NC,OR]
  RewriteCond %{HTTP_HOST} ^lokitech\.com [NC]
  RewriteRule ^/(.*) http://localhost:8082/$1 [P]
  ProxyPreserveHost On
</VirtualHost>

Let's say I'm hosting www.lokitech.com and www.prestosports.com on this 
server.  With this setup, a request for an HTML URL on 
www.prestosports.com will get compressed, but a request for an HTML URL 
on www.lokitech.com will not get compressed.

I've done extensive google searching and saw there was something about 
how mod_deflate and mod_proxy are not compatible, but it wasn't clear if 
this is outdated or if there is a workaround.

Beyond instantly telling me how to fix this, I'm mainly hoping for 
suggestions to diagnose why the filter would not get applied to the 
proxy requests.  Thanks in advance.

--
Serge Knystautas
Lokitech >> software . strategy . design >> http://www.lokitech.com
p. 301.656.5501
e. sergek@xxxxxxxxxxxx

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