I have the following config: <VirtualHost *:80> ServerName alpha.xri.net ProxyRequests Off ProxyPass / http://localhost:8003/ nocanon ProxyPassReverse / http://localhost:8003/ ErrorLog logs/alphaxriproxy-error_log CustomLog "|/usr/sbin/cronolog /usr/local/apache2/logs/alphaxriproxy.log.%Y-%m-%d" combined </VirtualHost> When a request comes in to the local server: http://alpha.xri.net/proxy/=kermit*%E6%97%A5%E6%9C%AC%E7%89%88?_xrd_r=application/xrds+xml the mapped remote server URL became: http://localhost:8003/proxy/=kermit*%E6%97%A5%E6%9C%AC%E7%89%88?_xrd_r=application/xrds+xml?_xrd_r=application/xrds+xml This seems to happen when "nocanon" is turned on. This is related to bug 41798.
Created attachment 21755 [details] Proof-of-concept that fixes the issue This seems to be due to the code handling the "nocanon" option using r->unparsed_uri instead of r->uri. The r->unparsed_uri contains the query string while r->uri does not. This patch excludes the query portion of r->unparsed_uri when constructing the remote server URL.
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