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I'd like to configure apache so that http://my-domain.com/myapp serves a Python webapp running in CherryPy on a backend server.

Here's what's in the vhost:

    RewriteRule ^/myapp/?(.*) http://backend-server:8000/$1 [P]
    ProxyPassReverse /myapp/ http://backend-server:8000/

When I trace the request/response, I see:

GET /myapp HTTP/1.1
Host: my-domain.com

And then:

HTTP/1.1 303 See Other
Date: Thu, 15 Sep 2011 21:46:35 GMT
Server: CherryPy/3.1.2
Content-Type: text/html;charset=utf-8
Location: http://my-domain.com/somwhere-else/

As you can see, the CherryPy webapp sends a 303 redirect to /somewhere-else/

Any ideas why the Apache ProxyPassReverse doesn't transform the Location to http://my-domain.com/myapp/somewhere-else?

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Your source location is /myapp, while your ProxyPassReverse is for /myapp/; context of the proxied location doesn't match, so the ProxyPassReverse doesn't apply.

Why the mod_rewrite proxy? This should accomplish the same, and have no trailing slash consistency issues:

ProxyPass /myapp http://backend-server:8000
ProxyPassReverse /myapp http://backend-server:8000
  • Thanks much for the reply. I tried your suggestion, but, unfortunately, I'm seeing the same response. Perhaps I'm missing some other Apache directive? I'll keep digging.... – Upgradingdave Sep 15 '11 at 23:41
  • @Dave CherryPy might be getting sensitive about the Host: header - try adding ProxyPreserveHost on. Still, Apache should catch and translate that redirect, unless it doesn't think it should; is there anything different about the new URL versus the old? Host name (is there a www?), port, protocol - any difference in these things to the original request will cause Apache to leave the Location: header alone. – Shane Madden Sep 16 '11 at 0:47

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