/// <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();
UdpClient client = null;
try
{
// Configure and connect the socket.
client = new UdpClient();
IPEndPoint ipEndPoint = RemoteSNTPServer.GetIPEndPoint();
client.Client.SendTimeout = Timeout;
client.Client.ReceiveTimeout = Timeout;
client.Connect(ipEndPoint);
// Send and receive the data, and save the completion DateTime.
SNTPData request = SNTPData.GetClientRequestPacket(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 (UpdateLocalDateTime)
{
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;
}
finally
{
// Close the socket
if (client != null)
client.Close();
}
}
// Protected Methods
/// <summary>
/// Raises the QueryServerCompleted event.
/// </summary>
/// <param name="e">A QueryServerCompletedEventArgs instance.</param>
protected virtual void OnQueryServerCompleted(QueryServerCompletedEventArgs e)
{
EventHandler<QueryServerCompletedEventArgs> eh = QueryServerCompleted;
if (eh != null)
eh(this, e);
}