IPEndPoint LocalEndPoint = new IPEndPoint(IPAddress.Any, 60000);
            IPEndPoint MulticastEndPoint = new IPEndPoint(IPAddress.Parse("239.255.255.250"), 1900);

            Socket UdpSocket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);

            UdpSocket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, true);
            UdpSocket.Bind(LocalEndPoint);
            UdpSocket.SetSocketOption(SocketOptionLevel.IP, SocketOptionName.AddMembership, new MulticastOption(MulticastEndPoint.Address, IPAddress.Any));
            UdpSocket.SetSocketOption(SocketOptionLevel.IP, SocketOptionName.MulticastTimeToLive, 2);
            UdpSocket.SetSocketOption(SocketOptionLevel.IP, SocketOptionName.MulticastLoopback, true);

            Console.WriteLine("UDP-Socket setup done...\r\n");

            string SearchString = "M-SEARCH * HTTP/1.1\r\nHOST:239.255.255.250:1900\r\nMAN:\"ssdp:discover\"\r\nST:roku:ecp\r\n";

            UdpSocket.SendTo(Encoding.UTF8.GetBytes(SearchString), SocketFlags.None, MulticastEndPoint);

            Console.WriteLine("M-Search sent...\r\n");

            List<string> messages = new List<string>();

            byte[] ReceiveBuffer = new byte[64000];

            int ReceivedBytes = 0;

            Console.WriteLine("Waiting one second to let the UDP port receive data.");
            System.Threading.Thread.Sleep(1000);


            while (true)
            {
                if (UdpSocket.Available != 0)
                {
                    ReceivedBytes = UdpSocket.Receive(ReceiveBuffer, SocketFlags.None);

                    if (ReceivedBytes != 0)
                    {
                            //Console.WriteLine(Encoding.UTF8.GetString(ReceiveBuffer, 0, ReceivedBytes));
                        //Console.WriteLine(MulticastEndPoint.Address);
                            messages.Add(Encoding.UTF8.GetString(ReceiveBuffer, 0, ReceivedBytes));
                    }
                    else
                    {
                        break;
                    }
                }
                else
                {
                    break;
                }
            }