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60 lines
1.8 KiB
C#
60 lines
1.8 KiB
C#
1 month ago
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#if DEBUG && !UNITY_WP_8_1 && !UNITY_WSA
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using System;
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using System.Threading;
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namespace FlyingWormConsole3.LiteNetLib
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{
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public class NtpSyncModule
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{
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public DateTime? SyncedTime { get; private set; }
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private readonly NetSocket _socket;
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private readonly NetEndPoint _ntpEndPoint;
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private readonly ManualResetEvent _waiter = new ManualResetEvent(false);
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public NtpSyncModule(string ntpServer)
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{
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_ntpEndPoint = new NetEndPoint(ntpServer, 123);
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_socket = new NetSocket(OnMessageReceived);
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_socket.Bind(0, false);
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SyncedTime = null;
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}
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private void OnMessageReceived(byte[] data, int length, int errorCode, NetEndPoint remoteEndPoint)
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{
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if (errorCode != 0)
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{
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_waiter.Set();
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return;
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}
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ulong intPart = (ulong)data[40] << 24 | (ulong)data[41] << 16 | (ulong)data[42] << 8 | (ulong)data[43];
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ulong fractPart = (ulong)data[44] << 24 | (ulong)data[45] << 16 | (ulong)data[46] << 8 | (ulong)data[47];
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var milliseconds = (intPart * 1000) + ((fractPart * 1000) / 0x100000000L);
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SyncedTime = (new DateTime(1900, 1, 1)).AddMilliseconds((long)milliseconds);
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_waiter.Set();
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}
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public void GetNetworkTime()
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{
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if (SyncedTime != null)
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return;
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var ntpData = new byte[48];
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//LeapIndicator = 0 (no warning)
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//VersionNum = 3
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//Mode = 3 (Client Mode)
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ntpData[0] = 0x1B;
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//send
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int errorCode = 0;
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_socket.SendTo(ntpData, 0, ntpData.Length, _ntpEndPoint, ref errorCode);
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if(errorCode == 0)
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_waiter.WaitOne(1000);
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}
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}
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}
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#endif
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