using System;
using System.Net;
using System.Net.Sockets;
using System.Text;
public class MultiSend
{
public static void Main()
{
Socket server = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
IPEndPoint iep = new IPEndPoint(IPAddress.Parse("224.100.0.1"), 9050);
byte[] data = Encoding.ASCII.GetBytes("This is a test message");
server.SendTo(data, iep);
server.Close();
}
}