mod_proxy/4854: ProxyPassReverse does not change all headers (such as Content-Location) pointing back to original http-server

[Jarkko Saloranta <jj...@iki.fi>]

>Number:         4854
>Category:       mod_proxy
>Synopsis:       ProxyPassReverse does not change all headers (such as Content-Location) pointing back to original http-server
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    apache
>State:          open
>Class:          change-request
>Submitter-Id:   apache
>Arrival-Date:   Thu Aug 12 13:50:01 PDT 1999
>Last-Modified:
>Originator:     jjs@iki.fi
>Organization:
apache
>Release:        1.3.6
>Environment:
RedHat Linux 6.0
>Description:
ProxyPassReverse directive tries to prevent the browser from getting pointed
to the original site when original server sends a redirect header.
Some servers (Like Microsoft IIS) send a Content-Location header in similar kind of situations as redirects are used.
When requesting something like http://server.domain/directory/, IIS send a document (index.html or whatever) with a Content-Location header defined as http://server.domain/directory/index.html
Some browsers (not all) use this information when following links from page just received.
This will point the browser to the original site rather than using ProxyPass server.
>How-To-Repeat:
Set up an IIS server and define apache to ProxyPass the root of IIS server to /iis-server/. Create index.html to root of IIS server.
Then point lynx to the http://apacheserver/iis-server/  .
Follow some link on the index page and see your browser requesting data directly from IIS-server rather than apache-server.
>Fix:
Modify ProxyPassReverse directive to modify also Content-Location header.
Or add another directive (ProxyPassContentlocation) for this purpose.
>Audit-Trail:
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