I would like to serve /foo and /foo/ locally, but proxy requests for /foo/* to a remote server. However, the following rule matches all of the above. What am I doing wrong?
RewriteRule ^/foo/(.+)$ http://remote.host/$1 [P,L]
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150answers:
3
A:
Well, since mod_rewrite normally strips leading slashes from the matched text, I suspect you're either transcribing/anonymizing imperfectly or there's a good deal else going on in your rewrite configuration. That seems further borne out by the impossibility of the pattern /foo/.+ matching /foo.
Can you expand and double-check what you're posting from your rewrite config, so we can see what else might be going on?
chaos
2009-02-13 21:30:29
Here's a verbatim copy/paste, I'm testing with dummy values. /foo, /foo/, and /foo/blah all return proxy errors rather than local 404s. <VirtualHost *:80> DocumentRoot /srv/proxytest RewriteEngine On RewriteRule ^/foo/(.+)$ http://remote.host/$1 [P,L] </VirtualHost>
2009-02-13 21:54:36
What's the proxy error? Right now I'm suspecting that Apache is getting as far as reading the P in your options, trying to initialize its communication with mod_proxy, and dying before it actually does anything with your rule.
chaos
2009-02-13 21:57:36
Proxy ErrorThe proxy server received an invalid response from an upstream server.The proxy server could not handle the request GET /foo/blah.Reason: DNS lookup failure for: remote.host
2009-02-13 22:34:05
Okay, guess not then. I assume for the mysterious requests to /foo and /foo/ it says GET /? Well, that makes no sense, but we can probably work around it. Try adding this before your current rule: RewriteRule ^/foo/?$ - [L]
chaos
2009-02-13 22:54:46
A:
I think I got it -- somewhere the default docname is being set to index.php, which is silently being appended to my rewrite.
RewriteLog output:
(2) init rewrite engine with requested uri /foo
(3) applying pattern '^/foo(/.+)+$' to uri '/foo'
(1) pass through /foo
(2) init rewrite engine with requested uri /foo/
(3) applying pattern '^/foo(/.+)+$' to uri '/foo/'
(1) pass through /foo/
(2) init rewrite engine with requested uri /foo/index.php
(3) applying pattern '^/foo(/.+)+$' to uri '/foo/index.php'
(2) rewrite '/foo/index.php' -> 'http://remote.host//index.php'
(2) forcing proxy-throughput with http://remote.host//index.php
(1) go-ahead with proxy request proxy:http://remote.host//index.php [OK]
+1
A:
You will need to escape for the first couple of conditions so that they don't all send them off to the remote host. Try this:
RewriteEngine On
RewriteRule ^foo$ /$1 [L]
RewriteRule ^foo/$ /$1 [L]
RewriteRule ^foo/([a-zA-Z0-9].*)$ http://example.com/$1 [L]
First rule checks the first condition to be plainly /foo. If so, stay at home.
Next test checks to see if it's not just /foo/. If so, again, stay local.
Last test checks to see if you have anything dangling behind a slash, if so, then you probably want the remote host and sends it there.
random
2009-02-16 03:46:31