Failed to connect to server from Unity.Netcode.Transports.UTP.UnityTransport:

Hello!

I'm pretty new to Unity. I'm developing a PvP game, using Netcode for GameObjects and Relay Service for connection.

Following the documentation https://docs.unity.com/relay/relay-and-ngo.html, I am able to get the Allocation from Relay Service and have my Host started.

Code (CSharp):

1.  
2.  
3. await UnityServices.InitializeAsync(); //Initialize the Unity Service Engine
4.             if (!AuthenticationService.Instance.IsSignedIn){ //If not already logged, log the user in
5.                 await AuthenticationService.Instance.SignInAnonymouslyAsync();
6.             }
7.  
8. Allocation allocation = await Unity.Services.Relay.RelayService.Instance.CreateAllocationAsync(2);
9.  
10. string joinCode = await Unity.Services.Relay.RelayService.Instance.GetJoinCodeAsync(allocation.AllocationId); // display it to the user later
11.  
12. // Retrieve the Unity transport used by the NetworkManager
13.         UnityTransport transport = NetworkManager.Singleton.gameObject.GetComponent<UnityTransport>();
14.  
15. RelayServerEndpoint relayServer = null;
16.         foreach (RelayServerEndpoint endPoint in allocation.ServerEndpoints) {
17.             if (endPoint.ConnectionType == "dtls") {
18.                 relayServer = endPoint;
19.             }
20.         }
21.  
22. transport.SetRelayServerData(relayServer.Host, (ushort) relayServer.Port, allocation.AllocationIdBytes, allocation.Key, allocation.ConnectionData);
23.  
24. NetworkManager.Singleton.StartHost();
25.  
26.  

From the client side, I attempt to connect to the host using join code. I am able to retrieve the JoinAllocation and have my Client started with below code.

Code (CSharp):

1. await UnityServices.InitializeAsync();
2. if (!AuthenticationService.Instance.IsSignedIn){
3.                 //If not already logged, log the user in
4.                 await AuthenticationService.Instance.SignInAnonymouslyAsync();
5.             }
6. JoinAllocation allocation = await Unity.Services.Relay.RelayService.Instance.JoinAllocationAsync(joinCode);
7.  
8. UnityTransport transport = NetworkManager.Singleton.gameObject.GetComponent<UnityTransport>();
9.  
10. RelayServerEndpoint relayServer = null;
11.         foreach (RelayServerEndpoint endPoint in allocation.ServerEndpoints) {
12.             if (endPoint.ConnectionType == "dtls") {
13.                 relayServer = endPoint;
14.             }
15.         }
16.  
17. transport.SetRelayServerData(relayServer.Host, (ushort) relayServer.Port, allocation.AllocationIdBytes, allocation.Key, allocation.ConnectionData, allocation.HostConnectionData);
18.  
19. NetworkManager.Singleton.StartClient();

But, the host is not getting the client connected. After a while, the client throws an error messag...

Failed to connect to server.
UnityEngine.Debug:LogError (object)
Unity.Netcode.Transports.UTP.UnityTransport: ProcessEvent () (at Library/PackageCache/com.unity.netcode.gameobjects@1.2.0/Runtime/Transports/UTP/UnityTransport.cs:828)
Unity.Netcode.Transports.UTP.UnityTransport: Update () (at Library/PackageCache/com.unity.netcode.gameobjects@1.2.0/Runtime/Transports/UTP/UnityTransport.cs:877)

Does anybody have any idea what went wrong please? I am running the host from application and client from Unity Editor on the same network.

 

Thanks Simon!