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Steam : FindSession result empty for anybody after first client join.


I’m working on a multiplayer Game and have a possible issue with FindSessions on STEAM. I’m following those steps

1) Creating a session on Host (I don’t launch any Travel):

 FOnlineSessionSettings SessionSettings;
 SessionSettings.bIsLANMatch = false;
 SessionSettings.NumPublicConnections = 16;
 SessionSettings.bShouldAdvertise = true;
 SessionSettings.bUsesPresence = true;
 SessionSettings.bAllowJoinInProgress = false;    // because I don't wan't that anybody join after match started.
 m_SessionInterface->CreateSession(0, NAME_GameSession, SessionSettings);

2) Find and join Session with one client (no travel…). It work well.

3) Note that I don’t call StartSession and Session state stay : Pending (2).

4) Call a find session from a second client : Nothing found !

 m_SessionSearch->MaxSearchResults = 100;
 m_SessionSearch->QuerySettings.Set(SEARCH_PRESENCE, true, EOnlineComparisonOp::Equals);
 m_SessionInterface->FindSessions(0, m_SessionSearch.ToSharedRef());

So :

  • My Session can contain 16 player.

  • I don’t launch any travel.

  • Session stay “open” (= no match started)

  • And it seems to be invisible for everybody except first client.

Notice that this problem don't appear if bAllowJoinInProgress is set to true. But I don’t wan’t that anybody join after the StartSession. Is it an issue or I misunderstand the role of bAllowJoinInProgress ?

Thanks !

Product Version: UE 4.19
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asked Aug 23 '18 at 02:25 PM in C++ Programming

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