Sample code analysis on how to implement UDP sending and receiving request tool class in C#

黄舟
Release: 2017-06-18 10:30:38
Original
2186 people have browsed it

This article mainly introduces the UDP transceiver request tool class implemented in C#, and analyzes C#'s related operating skills for monitoring, receiving, and sending UDP requests in the form of specific examples. Friends in need can refer to the following

The example of this article describes the UDP sending and receiving request tool class implemented in C#. Share it with everyone for your reference, the details are as follows:

Initialization:


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ListeningPort = int.Parse(ConfigurationManager.AppSettings["ListeningPort"]);
SendingPort = int.Parse(ConfigurationManager.AppSettings["SendingPort"]);
SendingIp = ConfigurationManager.AppSettings["SendingIp"];
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Listening:


public static void Listen()
{
  Task.Run(() =>
  {
    var done = false;
    var listener = new UdpClient(ListeningPort);
    var groupEP = new IPEndPoint(IPAddress.Any, ListeningPort);
    string received_data;
    byte[] receive_byte_array;
    try
    {
      _log.Error("############Service started###########");
      while (true)
      {
        receive_byte_array = listener.Receive(ref groupEP);
        Console.WriteLine("Received a broadcast from {0}", groupEP.ToString());
        received_data = Encoding.UTF8.GetString(receive_byte_array, 0, receive_byte_array.Length);
        ParseCommand(received_data);
      }
    }
    catch (Exception e)
    {
      _log.Error(e);
      Console.WriteLine(e.ToString());
    }
    _log.Error("############Service stopped###########");
  });
}
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Sending:


public static void SendCommand(string xmlCmd)
{
  try
  {
    var sending_socket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
    var sending_end_point = new IPEndPoint(IPAddress.Parse(SendingIp), SendingPort);
    var send_buffer = Encoding.UTF8.GetBytes(xmlCmd);
    sending_socket.SendTo(send_buffer, sending_end_point);
    _log.Info("[COMMAND SENT] : " + xmlCmd);
  }
  catch (Exception ex)
  {
    _log.Error(ex);
  }
}
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