My friend is hosting the server and I can see it in the server list but when I try to join, it errors and I get: “Network Error: PendingConnectionFailure”.
I’m using Unreal Engine 5.4.4 with the Advanced Session and Advanced Steam Session Plugins
Looking into the logs, at the point of connecting I get this:
[2025.03.08-21.29.35:997][759]LogHandshake: Stateless Handshake: NetDriverDefinition 'GameNetDriver' CachedClientID: 1
[2025.03.08-21.29.35:997][759]LogSteamSocketsAPI: Warning: SteamSockets API: Warning [#3387845777 P2P steamid:FRIENDSSTEAMID vport 7777] Relay candidates enabled by P2P_Transport_ICE_Enable, but P2P_TURN_ServerList is empty
[2025.03.08-21.29.35:999][759]LogSockets: SteamSockets: Now tracking socket 3387845777 for addr FRIENDSSTEAMID:7777, has parent? 0
[2025.03.08-21.29.35:999][759]LogNet: Game client on port 7777, rate 100000
[2025.03.08-21.29.35:999][759]LogNetVersion: Shooter [1.0.0.0](http://1.0.0.0), NetCL: 33043543, EngineNetworkVersion: 34, GameNetworkVersion: 0 (Checksum: 1006547901)
[2025.03.08-21.29.45:999][380]LogSteamSocketsAPI: Verbose: SteamSockets API: Log [#3387845777 P2P steamid:FRIENDSSTEAMID vport 7777] problem detected locally (5003): Timed out attempting to connect
[2025.03.08-21.29.46:030][381]LogNet: Error: UEngine::BroadcastNetworkFailure: FailureType = PendingConnectionFailure, ErrorString = Your connection to the host has been lost., Driver = Name:PendingNetDriver Def:GameNetDriver SteamSocketsNetDriver_2147482447
[2025.03.08-21.29.46:030][381]LogNet: Warning: Network Failure: PendingNetDriver[PendingConnectionFailure]: Your connection to the host has been lost.
[2025.03.08-21.29.46:030][381]LogNet: NetworkFailure: PendingConnectionFailure, Error: 'Your connection to the host has been lost.'
[2025.03.08-21.29.46:030][381]LogBlueprintUserMessages: [NewGameInstance_C_2147482577] Network Error: PendingConnectionFailure
[2025.03.08-21.29.46:030][381]LogBlueprintUserMessages: [NewGameInstance_C_2147482577] Is Server: false
[2025.03.08-21.29.46:030][381]LogNet: DestroyNamedNetDriver SteamSocketsNetDriver_2147482447 [PendingNetDriver]
[2025.03.08-21.29.46:046][382]LogGlobalStatus: UEngine::Browse Started Browse: "/Game/Maps/Menus/MainMenu/MainMenuLevel?closed"
[2025.03.08-21.29.46:046][382]LogNet: Browse: /Game/Maps/Menus/MainMenu/MainMenuLevel?closed
[2025.03.08-21.29.46:046][382]LogNet: Connection failed; returning to Entry
[2025.03.08-21.29.46:046][382]LogLoad: LoadMap: /Game/Maps/Menus/MainMenu/MainMenuLevel?closed
These are the plugins I have enabled:
Advanced Sessions
Advanced Steam Sessions
Steam Sockets
Online Subsystem
Online Subsystem Steam
Socket Subsystem EOS
and I have this in my DefaultEngine.ini:
[/Script/Engine.GameEngine]
!NetDriverDefinitions=ClearArray
+NetDriverDefinitions=(DefName="GameNetDriver",DriverClassName="/Script/SteamSockets.SteamSocketsNetDriver",DriverClassNameFallback="/Script/SteamSockets.SteamNetSocketsNetDriver")
[SystemSettings]
net.CurrentHandshakeVersion=2
net.MinHandshakeVersion=2
net.VerifyNetSessionID=0
net.VerifyNetClientID=0
[OnlineSubsystem]
DefaultPlatformService=Steam
[OnlineSubsystemSteam]
bEnabled=true
SteamDevAppId=480
bInitServerOnClient=true
bUsesPresence=true
bUseLobbiesIfAvaliable=true
bUseSteamNetworking=true
bAllowP2PPacketRelay=true
bIsUsingP2PSockets=true
[/Script/OnlineSubsystemSteam.SteamNetDriver]
NetConnectionClassName="OnlineSubsystemSteam.SteamNetConnection"
bEnableSteamDatagramTransport=true
P2P_Transport_ICE_Enable=true
P2P_TURN_ServerList=turn:turn.globalrelay.net:3478,turn:turn2.globalrelay.net:3478
I couldn’t find anything online and the tutorials haven’t really fixed my issue. There’s no documentation that I can find (at least anything that explains this stuff)
If anyone has any info or knows how to fix this, I would really appreciate it.
If you need more info/context, please let me know. Thanks 