Get room credentials

OpenIMClient.getInstance().signalingManager.signalingGetTokenByRoomID(
    new OnBase<SignalingCertificate>() {
        @Override
        public void onSuccess(SignalingCertificate credentials) {
            // credentials provides the roomID, token, and liveURL for joining a media room.
        }

        @Override
        public void onError(int code, String error) {
            // code and error describe the failure.
        }
    },
    roomID
);