[keycloak-dev] "You are already logged-in" issue

Hi, I'm working on https://issues.jboss.org/browse/KEYCLOAK-5179 See if message "You are already logged-in" can be avoided during authentication. In current state we discard the RootAuthenticationSession when user successfully finishes the authentication. In that moment we loose all the information stored in AuthenticationSession(s) for other tab(s) and in some cases we do not know where to redirect the user. To solve this issue there seems to be 2 possibilities. 1. Do not remove RootAuthenticationSession once the user finishes the authentication. Instead we can remove just AuthenticationSession associated with the specific tab from the RootAuthenticationSession and the RootAuthenticationSession would be deleted together with last AuthenticationSession from it. 2. Add and pass redirect_uri parameter to login flow. With the parameter we'd always have an information where it should be redirected in case the authentication was successfully finished in other tab. With solution #1 it'd increase the memory as it keeps RootAuthenticationSession alive till all tabs are alive. Solution #2 keeps current behavior regarding the authentication sessions but it slightly increases the length of uris. wdyt?