/// <summary>
/// Locates BroadcastServers on the network identified by the specified Guid
/// </summary>
/// <param name="serviceId">Unique identifier for the requested server.</param>
/// <param name="groupAddress">Group address to broadcast on.</param>
/// <param name="serverPort">Port to broadcast on.</param>
/// <param name="millisecondTimeout">Time (in milliseconds) to wait for responses from remote server.</param>
/// <returns>An array of ServerResponse structures.</returns>
public static ServerResponse[] FindServer(Guid serviceId, IPAddress groupAddress, int serverPort, int millisecondTimeout)
{
UdpClient sender = new UdpClient();
// Construct datagram
byte[] request = serviceId.ToByteArray();
IPEndPoint groupEP = new IPEndPoint(groupAddress, serverPort);
// Send the message
sender.Send(request, request.Length, groupEP);
// Accumulate responses in thread
ResponseHandler h = new ResponseHandler(ResponseHandlerImpl);
IAsyncResult ar = h.BeginInvoke(sender, serviceId, null, null);
// Wait for mullisecondTimeout milliseconds then close socket
Thread.Sleep(millisecondTimeout);
sender.Close();
// Return the results
ServerResponse[] r = h.EndInvoke(ar);
return(r);
}