Not force closing all rooms may be a good idea

Websockets/Room.cs

@@ -25,7 +25,7 @@ public class Room
         {
             var slicedBuffer = buffer[0..result.Count];
             var action = JsonSerializer.Deserialize<ActionDTO>(slicedBuffer);
-            _game.handleAction(socketId, action);
+            _game.HandleAction(socketId, action);
             BroadcastGameState();
             buffer = EmptyBuffer();
             result = await ReceiveAsync(socket, buffer);
@@ -58,7 +58,7 @@ public class Room
         _connections.Remove(socketId);
     }
     
-    private async Task<WebSocketReceiveResult?> ReceiveAsync(WebSocket webSocket, byte[] buffer)
+    private static async Task<WebSocketReceiveResult?> ReceiveAsync(WebSocket webSocket, byte[] buffer)
     {
         var arraySegment = new ArraySegment<byte>(buffer);
         var result = await webSocket.ReceiveAsync(arraySegment, CancellationToken.None);
@@ -83,7 +83,7 @@ public class Room
         }
     }
     
-    private void SendAsync(WebSocket socket, string message)
+    private static void SendAsync(WebSocket socket, string message)
     {
         var bytes = Encoding.Default.GetBytes(message);
         var arraySegment = new ArraySegment<byte>(bytes);
@@ -94,4 +94,9 @@ public class Room
     {
         return new byte[4096];
     }
+    
+    public bool IsEmpty()
+    {
+        return _connections.Count == 0;
+    }
 }