public Response Query()
{
var e = new IPEndPoint(IPAddress.Any, Port);
var u = new UdpClient(e);
var UdpState = new UdpState()
{
Client = u, IpEndPoint = e
};
try
{
var Timer = new Timer(2000);
// Hook up the Elapsed event for the timer.
Timer.Elapsed += (source, d) =>
{
u.Close();
Timer.Dispose();
};
Timer.Start();
u.Connect(Host, Port);
WriteData(UdpState, Handshake);
var message = ReceiveMessages(UdpState);
var challangeBytes = new byte[16];
Array.Copy(message, 5, challangeBytes, 0, message.Length - 5);
var challengeInt = int.Parse(Encoding.ASCII.GetString(challangeBytes));
var token = BitConverter.GetBytes(challengeInt).Reverse().ToArray();
WriteData(UdpState, Stat, token, new byte[] { 0x00, 0x00, 0x00, 0x00 });
var response = ReceiveMessages(UdpState);
return(new Response(response));
}
finally
{
u.Close();
}
}
public static void WriteData(UdpState s, byte cmd, byte[] append = null, byte[] append2 = null)
{
var cmdData = new byte[] { 0xFE, 0xFD, cmd, 0x01, 0x02, 0x03, 0x04 };
var dataLength = cmdData.Length + (append != null ? append.Length : 0) + (append2 != null ? append2.Length : 0);
var data = new byte[dataLength];
cmdData.CopyTo(data, 0);
if (append != null)
{
append.CopyTo(data, cmdData.Length);
}
if (append2 != null)
{
append2.CopyTo(data, cmdData.Length + (append != null ? append.Length : 0));
}
s.Client.Send(data, data.Length);
}
public static byte[] ReceiveMessages(UdpState s)
{
return(s.Client.Receive(ref s.IpEndPoint));
}
