public DateTime Now(string timeServer) { try { SntpMessage requestMessage = new SntpMessage(); SntpMessage responseMessage = new SntpMessage(); if (!StringUtility.IsNullOrEmpty(timeServer)) { // Resolve server address IPHostEntry timeHost = Dns.GetHostEntry(timeServer); IPEndPoint remoteEndPoint = new IPEndPoint(timeHost.AddressList[0], Constants.SNTP_CLIENT_PORT); responseMessage = SendRequest(requestMessage, remoteEndPoint); } else { responseMessage = SendRequest(requestMessage); } return(responseMessage.TransmitDateTime); } catch { return(DateTime.MinValue); } }
/// <summary> /// Initializes a new instance of the <see cref="TimeChangedEventArgs" /> class. /// </summary> /// <param name="message">Response Message.</param> public TimeChangedEventArgs(SntpMessage message) { this.ResponseMessage = message; this.DeviceTime = DateTime.Now.ToUniversalTime(); this.NetworkTime = message.TransmitDateTime; this.ClockOffset = message.LocalClockOffset; //Debug.Print(TimeZone.CurrentTimeZone.GetUtcOffset(responseMessage.TransmitDateTime).ToString()); //Debug.Print(TimeZone.CurrentTimeZone.GetUtcOffset(this.NetworkTime).ToString()); Utility.SetLocalTime(message.TransmitDateTime.AddHours(-8)); Logger.WriteInfo(this, "Device time changed from " + this.DeviceTime.ToString() + " to " + DateTime.Now.ToString() + " using network time"); }
private void Synchronize(object state) { SntpMessage requestMessage = new SntpMessage(); SntpMessage responseMessage = new SntpMessage(); responseMessage = SendRequest(requestMessage); if (responseMessage != null) { TimeChangedEventArgs args = new TimeChangedEventArgs(responseMessage); this.OnTimeChanged(args); } }
/// <summary> /// Initializes a new instance of the <see cref="TimeChangedEventArgs" /> class. /// </summary> /// <param name="message">Response Message.</param> public TimeChangedEventArgs(SntpMessage message) { this.ResponseMessage = message; this.DeviceTime = DateTime.Now.ToUniversalTime(); this.NetworkTime = message.TransmitDateTime; this.ClockOffset = message.LocalClockOffset; //Debug.Print(TimeZone.CurrentTimeZone.GetUtcOffset(responseMessage.TransmitDateTime).ToString()); //Debug.Print(TimeZone.CurrentTimeZone.GetUtcOffset(this.NetworkTime).ToString()); Utility.SetLocalTime(message.TransmitDateTime.AddHours(-8)); Logger.WriteInfo(this, "Device time changed from " + this.DeviceTime.ToString() + " to " + DateTime.Now.ToString() + " using network time"); }
public SntpMessage SendRequest(SntpMessage sentMessage, IPEndPoint remoteEndPoint) { try { using (Socket _socket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp)) { if (remoteEndPoint == null) { try { IPHostEntry timeHost = Dns.GetHostEntry(_primaryServer); remoteEndPoint = new IPEndPoint(timeHost.AddressList[0], Constants.SNTP_CLIENT_PORT); _socket.Connect(remoteEndPoint); } catch { Logger.WriteInfo(this, "Failed to contact primary server " + _primaryServer + " failed. Trying again using alternate server " + _alternateServer + " endpoint " + remoteEndPoint.ToString()); IPHostEntry timeHost = Dns.GetHostEntry(_alternateServer); remoteEndPoint = new IPEndPoint(timeHost.AddressList[0], Constants.SNTP_CLIENT_PORT); _socket.Connect(remoteEndPoint); } } try { _socket.Connect(remoteEndPoint); } catch { Logger.WriteInfo(this, "Failed to contact primary server " + _primaryServer + " failed. Trying again using alternate server " + _alternateServer + " endpoint " + remoteEndPoint.ToString()); } if (remoteEndPoint != null) { Byte[] messageBuffer = new Byte[Constants.SNTP_MAX_MESSAGE_SIZE]; _socket.ReceiveTimeout = Constants.SNTP_RECEIVE_TIMEOUT; _socket.SendTimeout = Constants.SNTP_SEND_TIMEOUT; // send message _socket.SendTo(sentMessage.ToArray(), remoteEndPoint); Logger.WriteDebug(this, "PACKET was " + " successfully sent to client endpoint " + remoteEndPoint.ToString()); Logger.WriteDebug(sentMessage.ToString()); // receive message _socket.Receive(messageBuffer); _socket.Close(); SntpMessage recivedMessage = new SntpMessage(messageBuffer); Logger.WriteDebug(this, "PACKET was successfully received from client endpoint " + remoteEndPoint.ToString()); Logger.WriteDebug(recivedMessage.ToString()); return(recivedMessage); } } } catch (SocketException ex) { Logger.WriteError(this, ex.Message + "Socket Error Code: " + ex.ErrorCode.ToString(), ex); } catch (Exception ex) { Logger.WriteError(this, "Error Message:" + ex.Message.ToString(), ex); } return(null); }
public SntpMessage SendRequest(SntpMessage sentMessage) { return(this.SendRequest(sentMessage, null)); }