[keycloak-user] How explicitly enable session management in Keycloak?

Hey, I use mod_auth_openidc version "2.1.2", Keycloak version “2.4.0” I was not able to implement the session management using OP and RP frames as described here: https://github.com/pingidentity/mod_auth_openidc/wiki/Session-Management I see in mod_auth_openidc logs the following: [Wed Feb 01 14:12:54 2017] [debug] src/mod_auth_openidc.c(1556): [client 192.168.111.33] oidc_save_in_session: session management disabled: session_state ((null)) and/or check_session_iframe ( https://localhost/auth/realms/realm/protocol/openid-connect/login-status-...) is not provided, referer: https://192.168.110.2/auth/realms/realm/protocol/openid-connect/auth?resp... It looks like the session management is disabled because the Provider did not return a session_state parameter in the authentication response (which in its turn can be verified via the referer URL in the same log entry) as the spec dictates: https://openid.net/specs/openid-connect-session-1_0.html#CreatingUpdating... How should I configure explicitly enable session management in Keycloak? It should starts returning session_state in the authentication responses. I see that it is implemented already https://issues.jboss.org/browse/KEYCLOAK-451 but probably I miss something.