Lancashire, Pete wrote:
What I'm trying to do is have a Apache 1.3.24 (eventually 2.x) server act only as a proxy.
Use v1.3.26 - the proxy you are using has bugs which have been fixed.
http://outside/images -> http://inside/ and http://outside/images/ -> http://inside/
Work just fine, and thanks to another list on how to get this to work without a trialing slash.
but no matter what I do I can not get the correct reverse translation to work
http://inside/you-name-it to become http://outside/images/you-name-it
Remember that the ProxyPassReverse translation mechanism doesn't try and be clever - it simply does an exact prefix match replacement. Also remember that the translation *only* happens for stuff in the response headers, like redirects. It *does not* translate stuff in the HTML itself, because a) it's too expensive and b) it will probably get it wrong anyway.
As a general rule it is best to make sure that the URI you use on the frontend is the same as the URI used on the backend. ie, if it's http://outside/images/you-name-it on the outside, then it should be http://inside/images/you-name-it on the inside.
The reason for this is that if a web designer embeds an URL in a page called /images/blah.gif, it will work on the backend but won't work on the frontend. Usually it's a lot easier to keep the URL spaces the same, rather than trying to change your website to relative links afterwards.
What I have so far in my httpd.conf is: ------------------------------------------------------------- RewriteRule ^/images/*(.+) http://inside/$1 [P]
ProxyPass /images/ <http://inside/>
ProxyPassReverse /images/ <http://inside/> ProxyPassReverse /images/ <http://inside.hidden.xyz/> --------------------------------------------------------------
All you need is:
ProxyPass /images/ http://inside/
ProxyPassReverse /images/ http://inside/
A few points to note:
- Remember that ProxyPassReverse does an exact copy-replace. If the user tries the URL "http://outside/images"; it *won't* match because "/images/" is not a substring of "/images".
- Makes sure that "inside" is the correct name for the website. If ProxyPassReverse says look for "http://inside/"; but the inside website identifies itself as "http://inside.blah.zxy/"; or "http://ip.add.re.ss/, it definitely won't work. Garbage in, garbage out.
- You aren't keeping the URL spaces the same. ie, you should rather try this instead:
ProxyPass /images/ http://inside/images/
ProxyPass /servlet/ http://inside/servlet/
Regards,
Graham
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