[keycloak-user] External Registration and SSO

I have a question related to External Registration and achieving SSO after registration similar to http://lists.jboss.org/pipermail/keycloak-user/2015-April/001925.html but it looks like we cant achieve it with out going to Keycloak login page/registration page My flow would be 1. Visit app 2. Click on registration link within app 3. Fill out registration info 4. App calls keycloak webservices to create user and set password 5. User is logged in and SSO is also achieved I see that the same flow is achieved in Red Hat Registration as well, when we try to register to RedHat thru link https://www.redhat.com/wapps/ugc/register.html;jsessionid=VE12s0McKzTHqAZ... (I think this is not on KeyCloak pages and its a registration page with in app) and after registration the user is logged in and SSO is also achieved. I couldnt find a way to implement it similarly, could you please help us with that? Thanks, Raghu