SetLobbyMemberData not triggering LobbyDataUpdate_t

[scottm85]

I may be misunderstanding how this is supposed to work, but according to the steam documentation SetLobbyMemberData should trigger a LobbyDataUpdate_t callback:

Each user in the lobby will be receive notification of the lobby data change via a LobbyDataUpdate_t callback, and any new users joining will receive any existing data.

I am only seeing this happen on the user that is setting their lobby member data. Example below:

public void OnLobbyEntered(LobbyEnter_t callback)
{
    if (SteamMatchmaking.GetNumLobbyMembers(lobbyId) % 2 == 0)
    {
        SteamMatchmaking.SetLobbyMemberData(lobbyId, Team.lobbyKey.ToString(), Team.Red.ToString());
    }
    else
    {
        SteamMatchmaking.SetLobbyMemberData(lobbyId, Team.lobbyKey.ToString(), Team.Blue.ToString());
    }
}

When a user enters a lobby I set the lobby member data to the team they will be on. If I manually check the member lobby data via RequestLobbyData or RequestMemberLobbyData it appears correct. However the following callback is only triggered for the user setting the member lobby data:

public void OnLobbyDataUpdated(LobbyDataUpdate_t callback)
{
    CSteamID lobbyId = new CSteamID(callback.m_ulSteamIDLobby);
    int numPlayers = SteamMatchmaking.GetNumLobbyMembers(lobbyId);
    Debug.Log(numPlayers); // never even making it this far on other clients
    if (numPlayers >= networkManager.maxConnections)
    {
        MatchFoundPanel.GetComponent<Animator>().Play("Modal Window In");
    }
}

Is there something I'm missing here? Any help would be much appreciated. Thanks.

[rlabrecque]

Hey Scott, my initial question is what is the lifetime of the object holding on to the OnlobbyDataUpdated callback? It's definitely 'alive' in scope and around when the other user joins?

[scottm85]

Hey @rlabrecque. Correct, I have a SteamLobby script that is attached to my mirror network manager. The callback is defined globally in the class, initialized in Start(), and working for every client on their own OnLobbyEntered events.

Edit for clarity: Both methods/callbacks are in the same script, are 'alive', and in scope from the start of the application. There is no Destroy sequence for the object where they reside.

[scottm85]

To add to this, if after the member lobby data has been set, I manually call GetNumLobbyMembers or GetLobbyMemberData, I can see the correct SteamUsers are in the correct lobby with the correct LobbyData and LobbyMemberData. I just can't seem to get the LobbyDataUpdate to trigger. I've been stuck on this, really confused for a while haha.

[scottm85]

Let me know if you have any follow up questions. I'm still stuck on this. Thanks.

[metalbird21]

Hello. Any new ideas on this issue? I am having the same problem.

[scottm85]

@metalbird21 Nothing on my end yet. I'm still having the problem.

[scottm85]

@metalbird21 - Did you ever come across a solution for this?