[ADD] added message received ok

Client/Client.cs

@@ -159,12 +159,14 @@ namespace Client
         {
             Debug.WriteLine("[CLIENT] sending message " + Encoding.ASCII.GetString(message));
             stream.BeginWrite(message, 0, message.Length, new AsyncCallback(OnWriteComplete), null);
+
         }
 
         private void OnWriteComplete(IAsyncResult ar)
         {
             Debug.WriteLine("[CLIENT] finished writing");
             stream.EndWrite(ar);
+            stream.Flush();
         }
     }
 }

Server/Models/ServerClient.cs

@@ -15,6 +15,7 @@ using static SharedClientServer.JSONConvert;
 
 namespace Server.Models
 {
+    public delegate void Callback();
     class ServerClient : ObservableObject
     {
         private TcpClient tcpClient;
@@ -24,6 +25,7 @@ namespace Server.Models
         private int totalBufferReceived = 0;
         public User User { get; set; }
         private ServerCommunication serverCom = ServerCommunication.INSTANCE;
+        private Callback OnMessageReceivedOk;
 
 
         /// <summary>
@@ -159,6 +161,10 @@ namespace Server.Models
                 case JSONConvert.RANDOMWORD:
                     //Flag byte for receiving the random word.
                     break;
+                case JSONConvert.MESSAGE_RECEIVED:
+                    // we now can send a new message
+                    OnMessageReceivedOk?.Invoke();
+                    break;
                 default:
                     Debug.WriteLine("[SERVER] Received weird identifier: " + id);
                     break;

SharedClientServer/JSONConvert.cs

@@ -18,6 +18,7 @@ namespace SharedClientServer
         public const byte LOBBY = 0x03;
         public const byte CANVAS = 0x04;
         public const byte RANDOMWORD = 0x05;
+        public const byte MESSAGE_RECEIVED = 0x06;
 
         public enum LobbyIdentifier
         {