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Categories / C# Tutorial / Network

 

Udp server setup

using System; using System.Net; using System.Net.Sockets; using System.Text; class MainClass {    public static void Main()    {       int receivedDataLength;       byte[] data = new byte[1024];       IPEndPoint ip = new IPEndPoint(IPAddress.Any, 9999);       Socket socket = new Socket(AddressFamily.InterNetwork,SocketType.Dgram, ProtocolType.Udp);       socket.Bind(ip);       IPEndPoint sender = new IPEndPoint(IPAddress.Any, 0);       EndPoint tmpRemote = (EndPoint)(sender);       receivedDataLength = socket.ReceiveFrom(data, ref tmpRemote);       Console.WriteLine("Message received from {0}:", tmpRemote.ToString());       Console.WriteLine(Encoding.ASCII.GetString(data, 0, receivedDataLength));       string welcome = "Welcome";       data = Encoding.ASCII.GetBytes(welcome);       socket.SendTo(data, data.Length, SocketFlags.None, tmpRemote);       for(int i = 0; i < 5; i++)       {          data = new byte[1024];          receivedDataLength = socket.ReceiveFrom(data, ref tmpRemote);          Console.WriteLine(Encoding.ASCII.GetString(data, 0, receivedDataLength));       }       socket.Close();    } }