Fix dead lobbies and other bugs

LobbyClientTest/Program.cs

@@ -25,8 +25,10 @@ _ = Task.Run(() =>
 {
     while (running)
     {
-        foreach (var lobbyEvent in lobbyClient.ReadEvents(20))
+        while (lobbyClient.TryReadEvent(out var lobbyEvent))
         {
+            if (lobbyEvent == null) continue;
+
             switch (lobbyEvent.EventType)
             {
                 case LobbyClientEventTypes.LobbyJoinFailed:
@@ -169,7 +171,7 @@ _ = Task.Run(() =>
                             lobbyClient.QueryExternalIpAndPort((remoteEndpoint, messageData, messageLength) =>
                             {
                                 fakeGameHost.Send(remoteEndpoint, messageData, messageLength);
-                            });
+                            }, out var  ip, out var port);
 
                             var ep = new IPEndPoint(IPAddress.Parse(lobbyRequestNatPunch.ClientIp!), lobbyRequestNatPunch.ClientPort);
                             for (int z = 0; z < 32; z++)