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From "Vlad Liapko" <>
Subject Re: [users@httpd] Using variables with mod_substitute to rewrite dynamically
Date Fri, 24 Nov 2017 19:22:01 GMT
Hi Luca,

I tried ProxyHTMLUrlMap, it has side effects making me to switch to Substitute. ProxyHTMLEnable=ON
makes all responses chunked, even not html, i.e. Java applet jars got chunked and applets
do not load properly after this. A few other things make mod_substitute a better option.


From: Luca Toscano 
Sent: Friday, November 24, 2017 1:06 PM
Subject: Re: [users@httpd] Using variables with mod_substitute to rewrite dynamically

Hi Vlad,

2017-11-23 16:29 GMT+01:00 Vlad Liapko <>:


  I’m trying to substitute a server name dynamically in xml responses
  Substitute s||${SERVER_NAME}|n
  to now success. Apache complains conf variable is not defined, but it is there in VirtualHost.

  So far I was able only to use <IF> and put a specific substitute for a specific host.
The reason I need it dynamically is that I have thousands of proxy rules through <Location>
directives, I want to be able move those rules from one environment to another without updating
a hardcoded value.

I don't think that mod_substitute works with expressions, have you tried

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