// Internal Methods /// <summary> /// A SNTPData that is used by a client to send to a server to request data. /// </summary> internal static SNTPData GetClientRequestPacket(VersionNumber versionNumber) { SNTPData packet = new SNTPData(); packet.Mode = Mode.Client; packet.VersionNumber = versionNumber; packet.TransmitDateTime = DateTime.Now.ToUniversalTime(); return(packet); }
/// <summary> /// This is the 'nuts and bolts' method that queries the server. /// </summary> /// <returns>A QueryServerResults instance that holds the results of the query.</returns> private QueryServerCompletedEventArgs QueryServer() { QueryServerCompletedEventArgs result = new QueryServerCompletedEventArgs(); Initialize(); using (UdpClient client = new UdpClient()) { try { // Configure and connect the socket. IPEndPoint ipEndPoint = RemoteSNTPServer.GetIPEndPoint(); client.Client.SendTimeout = (int)this.Timeout.TotalMilliseconds; client.Client.ReceiveTimeout = (int)this.Timeout.TotalMilliseconds; client.Connect(ipEndPoint); // Send and receive the data, and save the completion DateTime. SNTPData request = SNTPData.GetClientRequestPacket(this.VersionNumber); client.Send(request, request.Length); result.Data = client.Receive(ref ipEndPoint); result.Data.DestinationDateTime = DateTime.Now.ToUniversalTime(); // Check the data if (result.Data.Mode == Mode.Server) { result.Succeeded = true; // Call other method(s) if needed if (this.UpdateLocalDateTime) { this.UpdateTime(result.Data.LocalClockOffset); result.LocalDateTimeUpdated = true; } } else { result.ErrorData = new ErrorData("The response from the server was invalid."); } return(result); } catch (Exception ex) { result.ErrorData = new ErrorData(ex); return(result); } } }