StartSession doesn't set SessionState to Playing/InProgress for Steam game

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1

Hi,
So I’ve been having this issue for some time when starting a session.

Even though StartSession(FName SessionName) runs succesful after creating a session (called at the end of the delegate), it never updates the session state. This can be seen from the Steam overlay when inviting a friend for example. Does anyone know if there are extra steps, or is it simply not working?

In OnlineSessionInterfaceSeam.cpp at line 373: bool FOnlineSessionSteam::StartSession(FName SessionName) sets Session->SessionState = EOnlineSessionState::InProgress;, but that doesn’t seem to be reached or simply doesn’t change the state for Steam.

2

So it seems like this is working as inteded and games won’t be set to InProgress for Steam. Quote from the Unreal Bug Submission team: “We are also thinking that the Steam API may be considering the “lobby” as anything that is an online session that is not a dedicated server.”

Not a fix, but at least some clearity.