Newbie: Proxy to Glassfish

[GZ1]

Hello,
I'm migrating an app from Apache/JBoss to nginx/Glassfish.  I think I'm
starting to grasp the server-location design but am getting errors when
I try to proxy a request to Glassfish.  Here's a clip from my config:

	server {
		server_name		www.foobar.com foobar.com;
		root			html/prod;
		index			index.html;
		location /dc {
			proxy_pass              $scheme://localhost:8080$request_uri;
			proxy_set_header        X-Real-IP $remote_addr;
			proxy_set_header        X-Forwarded-For $proxy_add_x_forwarded_for;
			proxy_set_header        Host $http_host;
		}
	}

The gist of it is I want all dynamic content (dc) to go to glassfish,
i.e. foobar.com/dc/somepath/page.jsp
Everything else (presumably the static content) is served from
html/prod. (That part works)
I want the path to determine what happens, not the file extensions
(because I have some .js that is static and other that is generated by
the server).

I have a "hello world" app running on glassfish that works when accessed
directly from localhost:8080/webtest/home,
but when I try foobar.com/dc/webtest/home I get a 502 Bad Gateway error
in the browser.  The nginx error log reports this:

2011/04/08 14:13:30 [notice] 3884#3940: signal process started
2011/04/08 14:13:35 [error] 828#3472: *6 no resolver defined to resolve
localhost, client: 127.0.0.1, server: www.foobar.com, request: "GET
/dc/webtest/home HTTP/1.1", host: "foobar.com"

Any ideas what might be wrong with my configuration?
Thanks!
Greg

Posted at Nginx Forum: http://forum.nginx.org/read.php?2,189502,189502#msg-189502