Question Detecting client dropout during testing on 1 pc

Hello,

I am trying to test a multiplayer game and have ran into an interesting problem. I am testing on 1 device and have the multiplayer play mode create 3 additional instances of the game for testing.

When a client connects to the host this variable increments by 1, 1 extra player, int connectionCount = NetworkManager.Singleton.ConnectedClientsList.Count;, however the problem I am having is when I close the other instances they do not disconnect, I waited several minutes to see if it was a timeout thing but it's not, I can't get an updated player count once the player leaves.

Does anyone have any idea how to work around this?

Code (CSharp):

1. using Unity.Netcode;
2. using UnityEngine;
3.  
4. public class NetworkSynchronizer : NetworkBehaviour
5. {
6.     private int connectedClientsCount;
7.     // Start is called before the first frame update
8.     void Start()
9.     {
10.         this.name = "obj_NetworkSynchronizer";
11.     }
12.  
13.     // Update is called once per frame
14.     void Update()
15.     {
16.         //testing
17.         int connectionCount = NetworkManager.Singleton.ConnectedClientsList.Count;
18.         Debug.Log("Number of connected clients, including host: " + connectionCount);
19.         Debug.Log(connectedClientsCount);
20.     }
21.  
22.     private void OnEnable()
23.     {
24.         NetworkManager.Singleton.OnClientConnectedCallback += OnClientConnected;
25.         NetworkManager.Singleton.OnClientDisconnectCallback += OnClientDisconnected;
26.     }
27.  
28.     private void OnDisable()
29.     {
30.         NetworkManager.Singleton.OnClientConnectedCallback -= OnClientConnected;
31.         NetworkManager.Singleton.OnClientDisconnectCallback -= OnClientDisconnected;
32.     }
33.  
34.     private void OnClientConnected(ulong clientId)
35.     {
36.         if (NetworkManager.Singleton.IsServer)
37.         {
38.             connectedClientsCount++;
39.             // Handle a new connection here
40.             Debug.Log($"Client {clientId} has connected");
41.             int connectionCount = NetworkManager.Singleton.ConnectedClientsList.Count;
42.             Debug.Log("Number of connected clients, including host: " + connectionCount);
43.         }
44.        
45.     }
46.  
47.     private void OnClientDisconnected(ulong clientId)
48.     {
49.         if (NetworkManager.Singleton.IsServer)
50.         {
51.             connectedClientsCount--;
52.             // Handle a disconnection here
53.             Debug.Log($"Client {clientId} has disconnected");
54.             int connectionCount = NetworkManager.Singleton.ConnectedClientsList.Count;
55.             Debug.Log("Number of connected clients, including host: " + connectionCount);
56.         }
57.     }
58. }