.NET (Core and Framework)

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/****** The client program. created using C++.NET ********************/<br />
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InitWSA();<br />
   <br />
  sock = socket(AF_INET, SOCK_STREAM, 0);<br />
  if (sock < 0) {<br />
    printf("Error no %d occured when creating socket\n", errno);<br />
    exit(-1);<br />
  }<br />
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  myaddr.sin_family = AF_INET;<br />
  myaddr.sin_port = 5001;<br />
  myaddr.sin_addr.s_addr = INADDR_ANY;<br />
  <br />
  status = bind(sock, (struct sockaddr *)&myaddr, sizeof(struct sockaddr));<br />
  if(status < 0) {<br />
    printf("Error no %d occured when binding\n", errno);<br />
    exit(-1);<br />
  }<br />
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  receiver.sin_family = AF_INET;<br />
  receiver.sin_port = 5000;<br />
  receiver.sin_addr.s_addr = inet_addr("127.0.0.1");<br />
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  status = connect(sock, (struct sockaddr *)&receiver, sizeof(struct sockaddr));<br />
  if (status < 0) {<br />
    printf("Cannot connect to server, error no %d occured\n", errno); //here is where the message is                                                                                                                                                   //displayed where it could not connect to the server.<br />
    exit(-1);<br />
  }<br />
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/********** end source code **************/<br />
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/********** the server part. created using C# ***********/<br />
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  string portStr = textBoxPort.Text; //set the port using port 5000<br />
  int port = System.Convert.ToInt32(portStr);<br />
  <br />
  // Create the listening socket...<br />
  <br />
  m_mainSocket = new Socke(AddressFamily.InterNetwork,SocketType.Stream,ProtocolType.Tcp);<br />
  IPEndPoint ipLocal = new IPEndPoint (IPAddress.Any, port);<br />
  <br />
  // Bind to local IP Address...<br />
  <br />
  m_mainSocket.Bind( ipLocal );<br />
  <br />
  // Start listening...<br />
  <br />
  m_mainSocket.Listen(4);<br />
                                <br />
  // Create the call back for any client connections...<br />
  <br />
  m_mainSocket.BeginAccept(new AsyncCallback (OnClientConnect), null); //accept the   connection and transfer it to a thread.<br />
                                <br />
  UpdateControls(true);<br />
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/********** End program ***********/<br />
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