C#

using System;
using System.Net;
using System.Net.Sockets;
using System.Text;

class UDPClient
{
	static void Main(string[] args)
	{
		UdpClient recv = new UdpClient();
		
//		IPEndPoint rep = new IPEndPoint(IPAddress.Any, 0);
		IPEndPoint rep = new IPEndPoint(IPAddress.Parse("217.160.132.82"), 27015);
		
		while(true)
		{
			try{
				Byte[] bytes = recv.Receive(ref rep); // THIS WAITS FOREVER
			
				string packet = Encoding.ASCII.GetString(bytes);
			
				Console.WriteLine(bytes.Length + " Bytes received.");
			}
			catch (Exception e)
			{
				Console.WriteLine(e.ToString());
			}
		}
	}
}