In the mod_rewrite examples page the following can be found:
RewriteEngine on
RewriteCond %{REQUEST_URI} !-U
RewriteRule ^(.*) http://webserverB.dom/$1
[Not related comment: shouldn't this be ^/(.*)]
A request for http://localhost/foo/bar results in the following log:
127.0.0.1 - - [16/Oct/2005:17:34:06 +0200]
[windows.joost.localnet/sid#46a8b0][rid#4b1900/initial] (2) init rewrite
engine with requested uri /foo/bar
127.0.0.1 - - [16/Oct/2005:17:34:06 +0200]
[windows.joost.localnet/sid#46a8b0][rid#4b1900/initial] (3) applying pattern
'^(.+)' to uri '/foo/bar'
127.0.0.1 - - [16/Oct/2005:17:34:06 +0200]
[windows.joost.localnet/sid#46a8b0][rid#4c7a48/subreq] (2) init rewrite engine
with requested uri /foo/bar
127.0.0.1 - - [16/Oct/2005:17:34:06 +0200]
[windows.joost.localnet/sid#46a8b0][rid#4c7a48/subreq] (3) applying pattern
'^(.+)' to uri '/foo/bar'
127.0.0.1 - - [16/Oct/2005:17:34:06 +0200]
[windows.joost.localnet/sid#46a8b0][rid#4c7a48/subreq] (4) RewriteCond:
input='/foo/bar' pattern='!-U' => matched
127.0.0.1 - - [16/Oct/2005:17:34:06 +0200]
[windows.joost.localnet/sid#46a8b0][rid#4c7a48/subreq] (2) rewrite /foo/bar ->
http://webserverB.dom//foo/bar
127.0.0.1 - - [16/Oct/2005:17:34:06 +0200]
[windows.joost.localnet/sid#46a8b0][rid#4c7a48/subreq] (2) implicitly forcing
redirect (rc=302) with http://webserverB.dom//foo/bar
127.0.0.1 - - [16/Oct/2005:17:34:06 +0200]
[windows.joost.localnet/sid#46a8b0][rid#4c7a48/subreq] (1) escaping
http://webserverB.dom//foo/bar for redirect
127.0.0.1 - - [16/Oct/2005:17:34:06 +0200]
[windows.joost.localnet/sid#46a8b0][rid#4c7a48/subreq] (1) redirect to
http://webserverB.dom//foo/bar [REDIRECT/302]
127.0.0.1 - - [16/Oct/2005:17:34:06 +0200]
[windows.joost.localnet/sid#46a8b0][rid#4b1900/initial] (5) RewriteCond URI
(-U) check: path=/foo/bar -> status=302
127.0.0.1 - - [16/Oct/2005:17:34:06 +0200]
[windows.joost.localnet/sid#46a8b0][rid#4b1900/initial] (4) RewriteCond:
input='/foo/bar' pattern='!-U' => not-matched
127.0.0.1 - - [16/Oct/2005:17:34:06 +0200]
[windows.joost.localnet/sid#46a8b0][rid#4b1900/initial] (1) pass through /foo/bar
So instead of getting redirected, the -U seems to get applied again, sees the
request resulted in a 302 redirect, and decides that it's a valid URL after
all, so it's passed through, leading to a 404 error, instead of the redirect.
Am I misinterpreting the results, is the example wrong, or is something weird
going on in mod_rewrite with -U?
Joost
