string IPAddress = "";  
          int Port = 500;  
    
          string Filename = @"C:\Users\Ben\Desktop\TT.zip";  
    
    
          int bufferSize = 1024;  
          byte[] buffer = null;  
          byte[] header = null;  
    
    
          FileStream fs = new FileStream(Filename, FileMode.Open);  
          bool read = true;  
    
          int bufferCount = Convert.ToInt32(Math.Ceiling((double)fs.Length / (double)bufferSize));  
    
    
    
          TcpClient tcpClient = new TcpClient(IPAddress, Port);  
          tcpClient.SendTimeout = 600000;  
          tcpClient.ReceiveTimeout = 600000;  
    
          string headerStr = "Content-length:" + fs.Length.ToString() + "\r\nFilename:" + @"C:\Users\Administrator\Desktop\" + "test.zip\r\n";  
          header = new byte[bufferSize];  
          Array.Copy(Encoding.ASCII.GetBytes(headerStr), header, Encoding.ASCII.GetBytes(headerStr).Length);  
    
          tcpClient.Client.Send(header);  
    
          for (int i = 0; i < bufferCount; i++)  
          {  
              buffer = new byte[bufferSize];  
              int size = fs.Read(buffer, 0, bufferSize);  
    
              tcpClient.Client.Send(buffer,size,SocketFlags.Partial);  
    
          }  
    
          tcpClient.Client.Close();  
    
          fs.Close();

 int Port = 500;  
    
          TcpListener listener = new TcpListener(IPAddress.Any, Port);  
          listener.Start();  
    
    
          Socket socket = listener.AcceptSocket();  
    
          int bufferSize = 1024;  
          byte[] buffer = null;  
          byte[] header = null;  
          string headerStr = "";  
          string filename = "";  
          int filesize = 0;  
    
    
          header = new byte[bufferSize];  
    
          socket.Receive(header);  
    
          headerStr = Encoding.ASCII.GetString(header);  
    
    
          string[] splitted = headerStr.Split(new string[] { "\r\n" }, StringSplitOptions.None);  
          Dictionary<string, string> headers = new Dictionary<string, string>();  
          foreach (string s in splitted)  
          {  
              if (s.Contains(":"))  
              {  
                  headers.Add(s.Substring(0,s.IndexOf(":")), s.Substring(s.IndexOf(":") + 1));  
              }  
    
          }  
          //Get filesize from header  
          filesize = Convert.ToInt32(headers["Content-length"]);  
          //Get filename from header  
          filename = headers["Filename"];  
    
          int bufferCount = Convert.ToInt32(Math.Ceiling((double)filesize / (double)bufferSize));  
    
    
          FileStream fs = new FileStream(filename, FileMode.OpenOrCreate);  
    
          while(filesize > 0)  
          {  
              buffer = new byte[bufferSize];  
    
              int size = socket.Receive(buffer,SocketFlags.Partial);  
    
              fs.Write(buffer,0,size);  
    
              filesize -= size;  
          }  
    
    
          fs.Close();