I'm using proxy_pass to tomcat for one of my webapps.

The problem is that when the tomcat app calls a single-sign-on application (CAS), CAS redirects back to the tomcat application at 'http://<ip_addr>:<tomcat_port>/app' rather than www.mydomain.com/app.

How can I configure the proxy_pass so that my tomcat application presents itself to other applications as www.mydomain.com/app ?

I'm trying to understand the proxy documentation but I can't figure out a solution. I've tried:

location /app/ { proxy_pass http://<tomcat_server_name>:8089; proxy_redirect http://<tomcat_server_name>:8089/app/ www.mydomain.com/app; proxy_redirect on; proxy_set_header Host $host; proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; }

AND

location /app/ { proxy_pass http://<tomcat_server_name>:8089; proxy_redirect http://<tomcat_server_name>:8089/app/ www.mydomain.com/app; proxy_redirect on; }