Discovering empegs over IP, in C#

gistfile1.cs

// To discover empegs connected over Ethernet, we need to broadcast a '?', and listen for the response
var dgram = new byte[] { 0x3F }; // ASCII '?'
var client = new UdpClient(new IPEndPoint(IPAddress.Any, 8300));
client.EnableBroadcast = true;
client.Client.ReceiveTimeout = 500;
client.Send(dgram, dgram.Length, new IPEndPoint(IPAddress.Broadcast, 8300));

const int retryCount = 10;
for (int i = 0; i < retryCount; ++i)
{
    try
    {
        IPEndPoint from = null;
        var bytes = client.Receive(ref from);
        Console.WriteLine(BitConverter.ToString(bytes));
        var response = Encoding.ASCII.GetString(bytes);
        Console.WriteLine("Received {0} from {1}.", response, from);
    }
    catch (SocketException)
    {
        break;
    }
}