/// <summary>
/// Request time from NTP server and calls callback (if success)
/// </summary>
/// <param name="ntpServerAddress">NTP Server address</param>
/// <param name="port">port</param>
/// <param name="onRequestComplete">callback (called from other thread!)</param>
public static void RequestTimeFromNTP(string ntpServerAddress, int port, Action <DateTime?> onRequestComplete)
{
NetSocket socket = null;
var ntpEndPoint = new NetEndPoint(ntpServerAddress, port);
NetManager.OnMessageReceived onReceive = (data, length, code, point) =>
{
if (!point.Equals(ntpEndPoint) || length < 48)
{
return;
}
socket.Close();
ulong intPart = (ulong)data[40] << 24 | (ulong)data[41] << 16 | (ulong)data[42] << 8 | (ulong)data[43];
ulong fractPart = (ulong)data[44] << 24 | (ulong)data[45] << 16 | (ulong)data[46] << 8 | (ulong)data[47];
var milliseconds = (intPart * 1000) + ((fractPart * 1000) / 0x100000000L);
onRequestComplete(new DateTime(1900, 1, 1, 0, 0, 0, DateTimeKind.Utc).AddMilliseconds((long)milliseconds));
};
//Create and start socket
socket = new NetSocket(onReceive);
socket.Bind(0, false);
//Send request
int errorCode = 0;
var sendData = new byte[48];
sendData[0] = 0x1B;
var sendCount = socket.SendTo(sendData, 0, sendData.Length, ntpEndPoint, ref errorCode);
if (errorCode != 0 || sendCount != sendData.Length)
{
onRequestComplete(null);
}
}
/// <summary>
/// Start logic thread and listening on selected port
/// </summary>
/// <param name="port">port to listen</param>
public bool Start(int port)
{
if (IsRunning)
{
return(false);
}
_netEventsQueue.Clear();
if (!_socket.Bind(port, ReuseAddress))
{
return(false);
}
_logicThread.Start();
return(true);
}