Single

ZoFo/GameCore/Client.cs

@@ -12,7 +12,7 @@ namespace ZoFo.GameCore
 {
     public class Client
     {
-        ClientNetworkManager networkManager;
+        public ClientNetworkManager networkManager;
         public Client()
         {
             networkManager = new ClientNetworkManager();

ZoFo/GameCore/GUI/SelectModeMenu.cs

@@ -39,7 +39,10 @@ public class SelectModeMenu : AbstractGUI
         playButton.LeftButtonPressed += () => 
         {
             // single
-            
+            Server server = new Server();
+            Client client = new Client();
+            server.CreateRoom(2);
+            TextBox textBox = new TextBox(Manager) { text = client.networkManager.SocketConnected().ToString()};
             // ваш код здесь 
         };
         Elements.Add(playButton);

ZoFo/GameCore/GameManagers/NetworkManager/ClientNetworkManager.cs

@@ -27,6 +27,11 @@ namespace ZoFo.GameCore.GameManagers.NetworkManager
             Init();
         }
 
+        public bool SocketConnected()
+        {
+            return socket.Connected;
+        }
+
         public void Init() //create endPoint, socket
         {
             socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);