exception when message cannot be send

PolyChat/Models/Exceptions/MessageTimedOutException.cs

@@ -0,0 +1,16 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace PolyChat.Models.Exceptions
+{
+    public class MessageTimedOutException : Exception
+    {
+        public MessageTimedOutException(int seconds) : base(String.Format("After {0} seconds of trying to send the message it has timed out", seconds))
+        {
+
+        }
+    }
+}