added delegate for reading server response

RH-Engine/ServerResponseReader.cs

@@ -0,0 +1,64 @@
+using System;
+using System.Collections.Generic;
+using System.Net.Sockets;
+using System.Text;
+using System.Threading;
+
+namespace RH_Engine
+{
+    public delegate void OnResponse(string response);
+    class ServerResponseReader
+    {
+        public OnResponse callback
+        {
+            get;set;
+        }
+        public NetworkStream Stream { get; }
+
+        public ServerResponseReader(NetworkStream stream)
+        {
+            this.Stream = stream;
+        }
+
+        public void StartRead()
+        {
+            Thread t = new Thread(() =>
+            {
+                if (this.callback == null)
+                {
+                    throw new Exception("Callback not initialized!");
+                } else
+                while (true)
+                {
+                        string res = ReadPrefMessage(Stream);
+                        this.callback(res);
+                }
+            });
+        }
+
+        public static string ReadPrefMessage(NetworkStream stream)
+        {
+            byte[] lengthBytes = new byte[4];
+
+            stream.Read(lengthBytes, 0, 4);
+            Console.WriteLine("read message..");
+
+            int length = BitConverter.ToInt32(lengthBytes);
+
+            //Console.WriteLine("length is: " + length);
+
+            byte[] buffer = new byte[length];
+            int totalRead = 0;
+
+            //read bytes until stream indicates there are no more
+            do
+            {
+                int read = stream.Read(buffer, totalRead, buffer.Length - totalRead);
+                totalRead += read;
+                //Console.WriteLine("ReadMessage: " + read);
+            } while (totalRead < length);
+
+            return Encoding.UTF8.GetString(buffer, 0, totalRead);
+        }
+    }
+}