[keycloak-dev] KEYCLOAK-7409 Detect existing IdP session

I have a Keycloak realm that I'm using from my application via OpenID. Some users are already signed in to one of its' Identity Providers, but don't have a Keycloak session. I'd like to seamlessly sign them in to the application without going through a Keycloak login screen. I think that a '&prompt=none&kc_idp_hint=idp'request from the application should pass you through to a '&prompt=none' request on the IdP. I've managed to build some of the code and I'm looking at changing e.g. AuthorizationEndpointBase <https://github.com/keycloak/keycloak/blob/f429469fc8b80425ac85b0f0562710c... allow that kind of "passive" redirect but not other challenges. Does this sound like a good plan? I've never tried making this kind of change before - any general advice? I've seen this <https://github.com/keycloak/keycloak/blob/master/misc/HackingOnKeycloak.m... document. My request on JIRA KEYCLOAK-7409 <https://issues.jboss.org/browse/KEYCLOAK-7409> Someone else's older request <http://lists.jboss.org/pipermail/keycloak-user/2017-August/011666.html> mentioning this strategy