How do I include the original url as a request parameter, when proxying?

Question

I want to proxy the incoming requests with an nginx instance to a little java backend application. The idea is that I want every original request's uri to be included as a request parameter i.e. something like:

location / {
            proxy_pass http://localhost:9000?url=$request_uri;
        }

but it does not work

Answer 1

location / {
            proxy_pass http://localhost:9000$request_uri;
        }

The @request_uri is equal to the original request URI as received from the client including the args.

The $request_uri of this post is /questions/16188521/how-do-i-include-the-original-url-as-a-request-parameter-when-proxying.

see http://wiki.nginx.org/HttpCoreModule#.24request_uri