Unable to Host / Join Session (Blueprint Networking)

Development Programming & Scripting Multiplayer & Networking
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1

Hi Everyone,

Pulling my hair out at the min.

Setup a lobby and everything mainly using the Blueprint Multiplayer tutorial but whether I use Steam or Default Null Session provider I get something like this in the Logs and its not working. Any help would be much appreciated Suggestions?

  • [2016.10.25-22.49.33:444][322]LogAIModule:
    Creating AISystem for world Lobby

  • [2016.10.25-22.49.33:444][322]LogWorld: Game class is ‘LobbyGM_C’

  • [2016.10.25-22.49.33:445][322]LogInit: WinSock: Socket queue 131072 / 131072

  • [2016.10.25-22.49.33:445][322]PacketHandlerLog:
    Loaded PacketHandler component:

  • Engine.EngineHandlerComponentFactory
    (StatelessConnectHandlerComponent)

  • [2016.10.25-22.49.33:445][322]LogNet:
    GameNetDriver IpNetDriver_0
    IpNetDriver listening on port 7777

  • [2016.10.25-22.49.33:447][322]LogWorld: Bringing World /Game/Maps/Lobby.Lobby
    up for play (max tick rate 0) at
    2016.10.25-23.49.33

  • [2016.10.25-22.49.33:447][322]LogOnline:Warning: NULL: AutoLogin missing AUTH_LOGIN=.

  • [2016.10.25-22.49.33:448][322]LogWorld: Bringing up level for play took: 0.001870

  • [2016.10.25-22.49.33:448][322]LogOnline:Warning: NULL: No game present to join for session (Game)

  • [2016.10.25-22.49.33:462][322]LogGameMode:Display: Match State Changed from EnteringMap to WaitingToStart

  • [2016.10.25-22.49.33:462][322]LogGameState: Match State Changed from EnteringMap to WaitingToStart

  • [2016.10.25-22.49.33:462][322]LogGameMode:Display: Match State Changed from WaitingToStart to InProgress

  • [2016.10.25-22.49.33:462][322]LogGameState: Match State Changed from WaitingToStart to InProgress

  • [2016.10.25-22.49.33:463][322]LogLoad: Took 0.880593 seconds to LoadMap(/Game/Maps/Lobby)

  • [2016.10.25-22.49.45:876][ 86]LogOnline:Warning: NULL: Can’t destroy a null online session (Game)

  • [2016.10.25-22.49.46:022][ 95]LogOnline:Warning: NULL: Can’t destroy a null online session (Game)

  • [2016.10.25-22.50.04:244][215]LogWindowsTextInputMethodSystem:Display: IME system now deactivated.

  • [2016.10.25-22.50.04:251][215]LogOnline:Warning: NULL: No game present to leave for session (Game)

  • [2016.10.25-22.50.04:251][215]LogScriptCore:Warning: Script Msg: DestroySession - Invalid player state

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Link to STEAM Log: [Catapult Project (Free Download) - Community & Industry Discussion - Epic Developer Community Forums][2]

2

Did you turn on the OnlineSubsystemSteam plugin (new to 4.13)?
Did you do the .ini file shown here: Online Subsystem Steam | Unreal Engine Documentation ?

Sounds like you are not connecting to Steam at all.

Do you see the overlay pop up when you start a New Window or Standalone Game?

Don’t do PIE.

3

Sorry should have been clearer.

The above log is with the Steam online subsystem components removed but yes when testing with Steam I have done the ini with the updated requirements for 4.13 and enabled the plugin plus restarted the editor.
I am running in Standalone game.

Essentially the results whether I am using Steam or not seem to be the same. I’ve attached the log I get when Steam is “working” and by working I mean I get the Steam Overlay but the same errors.link text

As you can see, it looks like its not connecting or not created the session correctly but I can’t see why.
Oddly it loads my lobby fine which is called after Create Session Success.

Edit:
Also tried more than 1 computer and different Steam Accounts.
Project managed with SVN

4

Yup, not that simple I’m afraid. Really wish it was :slight_smile:

5

Maybe too obvious but are you using the 480 appID?

6

Interestingly., Open x.x.x.x works.

So the issues are we cannot find the session using Find Session and cannot Leave the session as it reports the session is invalid.

Dont know if it makes a difference if I am trying with LAN enabled.

  • [2016.10.26-08.37.42:726][269]LogOnline:Warning: STEAM: Can’t destroy a null online session (Game)
  • [2016.10.26-08.37.44:141][314]LogOnline:Warning: STEAM: Can’t destroy a null online session (Game)
  • [2016.10.26-08.37.44:332][320]LogOnline:Warning: STEAM: Can’t destroy a null online session (Game)
  • [2016.10.26-08.37.44:487][325]LogOnline:Warning: STEAM: Can’t destroy a null online session (Game)
  • [2016.10.26-08.37.44:647][330]LogOnline:Warning: STEAM: Can’t destroy a null online session (Game)
  • [2016.10.26-08.37.44:834][336]LogOnline:Warning: STEAM: Can’t destroy a null online session (Game)

I reckon this bit has to be the problem but I can’t see what could be causing it. Do Epic ever look at these threads?

  • [2016.10.26-08.37.39:059][166]LogOnline:Warning: STEAM: Can’t create more than one instance of Steam online subsystem!
  • [2016.10.26-08.37.39:071][166]LogWorld: Bringing up level for play took: 0.118603
  • [2016.10.26-08.37.39:080][166]LogOnline:Warning: STEAM: No game present to join for session (Game)