Re: How to proxy everything except selected urls?

[Randal L. Schwartz]

 Ken == Ken Miller [EMAIL PROTECTED] writes:


Ken I initially thought something like this would work:

Ken ---
Ken ProxyPass  On
Ken ProxyPass  /   http://other.server.com:1234/
Ken ProxyPassReverse   /   http://other.server.com:1234/

Ken alias /graphics /local/path
Ken ---

Ken However, /graphics also get's proxied to the app server.  This isn't what I
Ken want.

Ken I don't think mod_proxy can do this; at least it's not clear to me how to if
Ken it does support this feature.

Ken Would mod_rewrite be a better solution?  Match on the URL's that I want
Ken processed locally (and stop), else map the url to the app server, and
Ken forward the request?

Here's what the reverse-caching-proxy front end for www.stonehenge.com uses:

RewriteEngine On
## RewriteLog /web/stonehenge-proxy/var/log/rewrite_log
## RewriteLogLevel 3

## local services:
RewriteRule ^/icons/ - [last]
RewriteRule ^/tt2/images/ - [last]

## local redirect:
RewriteRule ^/cgi/go/(.*)$ $1 [redirect,last,noescape]

## passthrough:
RewriteMap escape int:escape
RewriteRule ^/(.*)$ http://localhost:8081/${escape:$1} [proxy,noescape]
ProxyPassReverse / http://localhost:8081/

## made a mistake! should never get here
RewriteRule .* - [forbidden]

By the way, without that RewriteMap, %3F in a URL incorrectly
becomes ?, thus ending the path-part and begins the query-part.
Bad.  Broken.  But this workaround works fine.  And the examples
in the mod_rewrite documentation are wrong.

I figured this out while rebuilding

  http://www.stonehenge.com/merlyn/Pictures/

to work with images that had spaces in the filenames as well
as question marks and ampersands. :)  Talk about escaping hell.

-- 
Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095
[EMAIL PROTECTED] URL:http://www.stonehenge.com/merlyn/
Perl/Unix/security consulting, Technical writing, Comedy, etc. etc.
See PerlTraining.Stonehenge.com for onsite and open-enrollment Perl training!

Re: How to proxy everything except selected urls?

[Issac Goldstand]

Ken Miller wrote:

I the past, when I've setup a proxy/app server configuration, it's always
been to forward certain url's to the app server, with the rest being
processed by the proxy.

However, I need to turn this around.  I want to pass everything to the app
server, except for some url's that point at static content (images, mostly).

I initially thought something like this would work:

---
ProxyPass  On
ProxyPass  /   http://other.server.com:1234/
ProxyPassReverse   /   http://other.server.com:1234/

alias /graphics /local/path
---

However, /graphics also get's proxied to the app server.  This isn't what I
want.

I actually have had to do this myself... The solution is as follows:

ProxyPass/staticstuff/!
ProxyPass/ http://other.host/
ProxyPassReverse / http://other.host/

! is a special symbol telling it not to proxy that stuff - also, I think 
order counts (eg, do !s first)

  Issac
  Issac