[users@httpd] Reverse proxying and specific output filter chain manipulation

[Thomas Eckert]

In a simple reverse proxy setup, such as

<Proxy balancer://cd107d9706d71153bafd4ab15f1c6b5d>
        BalancerMember http://mydomain.org
status=-SE</Proxy><VirtualHost 10.10.10.10:80>
        ServerName secure.mydomain.local
        SSLProxyEngine On

        RequestHeader set X-Forwarded-Proto http
        <Location />
                ProxyPass balancer://cd107d9706d71153bafd4ab15f1c6b5d/ 
lbmethod=bybusyness
                ProxyPassReverse balancer://cd107d9706d71153bafd4ab15f1c6b5d/
                ProxyPassReverseCookieDomain 
balancer://cd107d9706d71153bafd4ab15f1c6b5d/
                Include conf/proxyhtml.conf
                SetOutputfilter INFLATE;xml2enc;proxy-html;DEFLATE
                Require all granted
        </Location></VirtualHost>

how do I manipulate the output filter chain from the reverse proxy to
the backend ? E.g. I want to discard the Accept-Encoding
header when talking to the backend but I don't want to use
RequestHeader unset Accept-Encoding globally since that kills
compression support to the external clients as well.

Cheers,
  Thomas