I have an environment with an AngularJS app client, which authenticates user and keeps its data, and a server app that receive some requests for Webservices resources. 

For some webservices I need, on the server side, to translate the token into the user information. For that I use the url:

auth/realms/MYREAL/protocol/openid-connect/userinfo 

with the Authorization token.

The problem is that the server is behind a load balance and access keycloak thru port 8080. While AngularJS access the same server thru port 80.

Keycloak complains that the Token was issued from a different url than I'm querying on the server side. Forcing me to use the same hostname and port on the server and on the client.

Is that correct? How will I deploy on a distribuited environment?

ps. I'm using my own HTTP client to make that request to userinfo. 

ps2. I have added   "auth-server-url-for-backend-requests" however I don't see any difference.