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Multi Receive

/* C# Network Programming  by Richard Blum Publisher: Sybex  ISBN: 0782141765 */ using System; using System.Net; using System.Net.Sockets; using System.Text; public class MultiRecv {    public static void Main()    {       Socket sock = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);       Console.WriteLine("Ready to receive...");       IPEndPoint iep = new IPEndPoint(IPAddress.Any, 9050);       EndPoint ep = (EndPoint)iep;       sock.Bind(iep);       sock.SetSocketOption(SocketOptionLevel.IP, SocketOptionName.AddMembership,             new MulticastOption(IPAddress.Parse("224.100.0.1")));       byte[] data = new byte[1024];       int recv = sock.ReceiveFrom(data, ref ep);       string stringData = Encoding.ASCII.GetString(data, 0, recv);       Console.WriteLine("received: {0}  from: {1}", stringData, ep.ToString());       sock.Close();    } }