Asp.net C # use UdpClient to listen to port code

1. Server-side

The code is as follows

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Using System; Using System.Net; Using System.Net.Sockets; Using System.Text; Namespace ConsoleApplication1 { Class Program { static void Main (string[] args) { Listening on port 10086. Server (10086); } <summary> Server-side </summary> <param name= "Port" ></param> static void Server (int port) { Try { while (true) { UdpClient udpclient = new UdpClient (port); IPEndPoint IPEndPoint = new IPEndPoint (Ipaddress.any, Port); byte[] bytes = UdpClient. Receive (ref IPEndPoint); Stop here waiting for the data String data = Encoding.Default.GetString (bytes, 0, bytes. Length); UdpClient. Close (); Console.WriteLine ("{0:HH:MM:SS}" sends data from {1}: {2} ", DateTime.Now, IPEndPoint. address, data); } } catch (Exception ex) { Console.WriteLine ("{0:hh:mm:ss}->{1}", DateTime.Now, ex.) message); } } } }

2. Client

The code is as follows

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Using System; Using System.Net; Using System.Net.Sockets; Using System.Text; Namespace ConsoleApplication1 { Class Program { static void Main (string[] args) { Send data Client ("42.121.105.222", 10086, "mzwu.com"); } <summary> Client </summary> <param name= "IP" ></param> <param name= "Port" ></param> <param name= "Message" ></param> static void Client (string ip, int port, string message) { Try { Socket socket = new socket (addressfamily.internetwork, Sockettype.dgram, PROTOCOLTYPE.UDP); IPEndPoint IPEndPoint = new IPEndPoint (Ipaddress.parse (IP), port); byte[] data = Encoding.Default.GetBytes (message); Socket. SendTo (data, IPEndPoint); Socket. Close (); } catch (Exception ex) { Console.WriteLine ("{0:hh:mm:ss}->{1}", DateTime.Now, ex.) message); Console.readkey (); } } } }