Topic: Images not loading in reverse proxy with Apache in Ubuntu

[JumpZero]

I've set up a reverse proxy using the Ubuntu Apache2 package (2.2.2, with evidently an old version of mod_proxy_html), and it's about 50% functional, but certain images aren't loading.

I've tried with and without ProxyHTMLExtended on, but even with it on I'm not convinced that any non-inline scripts or CSS files are being properly handled, as they are being directed to my local root directory instead of /app1/, and when it is on, I can no longer log in to the internal webapp.

In the log, the only errors that stand out to me are those referencing things from relative root directories, like /images/* and /ajax/*. The image files are coming from separate CSS files, and it doesn't tell me where exactly the ajax references are originating.

Here is the relevant part of my VH config:

ProxyRequests Off
ProxyPass /app1/ http://example.com/
ProxyHTMLURLMap http://example.com /app1

ProxyHTMLLogVerbose On
LogLevel debug

<Location /app1/>
ProxyPassReverse /
SetOutputFilter proxy-html
ProxyHTMLURLMap / /app1/
ProxyHTMLURLMap /images([^\)]*) url(/app1/images$1) Rih
ProxyHTMLURLMap url\(http://example.com([^\)]*)\) url(http://localhost/app1/) Rih
RequestHeader unset Accept-Encoding
</Location>

And here's an example of the errors:

[Thu Apr 11 23:22:50 2013] [error] [client 127.0.0.1] File does not exist: /var/www/images, referer: http://localhost/app1/css/examplefile.css
[Thu Apr 11 23:31:00 2013] [error] [client 127.0.0.1] File does not exist: /var/www/ajax, referer: http://localhost/app1/admin/

Comparing the source to the proxied version, I see that the images are going from "/images/*" to "/var/www/images/*".

I've been poring through documentation for days but I can't seem to find a solution, so any assistance would be greatly appreciated.

[JumpZero]

I am rethinking my design and trying to make do with just proxy_http, as the site seems to respond better to it. Still, any tips on getting proxy_html working better would be welcome.