/// <summary>
/// Encodes a high-frequency based Date and Time value to XML.
/// </summary>
/// <param name="Timestamp">Timestamp</param>
/// <param name="Xml">XML output</param>
public static void Encode(DateTimeHF Timestamp, StringBuilder Xml)
{
Xml.Append(Timestamp.Year.ToString("D4"));
Xml.Append('-');
Xml.Append(Timestamp.Month.ToString("D2"));
Xml.Append('-');
Xml.Append(Timestamp.Day.ToString("D2"));
Xml.Append('T');
Xml.Append(Timestamp.Hour.ToString("D2"));
Xml.Append(':');
Xml.Append(Timestamp.Minute.ToString("D2"));
Xml.Append(':');
Xml.Append(Timestamp.Second.ToString("D2"));
Xml.Append('.');
Xml.Append(Timestamp.Millisecond.ToString("D3"));
Xml.Append(Timestamp.Microsecond.ToString("D3"));
Xml.Append(Timestamp.Nanosecond100.ToString("D1"));
Xml.Append('Z');
}
private void Clock(object Sender, IqEventArgs e)
{
DateTimeHF Now = SynchronizationClient.Now;
StringBuilder Xml = new StringBuilder();
Xml.Append("<resp xmlns='");
Xml.Append(NamespaceSynchronization);
if (Now.Ticks.HasValue)
{
Xml.Append("' hf='");
Xml.Append(Now.Ticks.Value.ToString());
Xml.Append("' freq='");
Xml.Append(Stopwatch.Frequency.ToString());
}
Xml.Append("'>");
Encode(Now, Xml);
Xml.Append("</resp>");
e.IqResult(Xml.ToString());
}
/// <summary>
/// Measures the difference between the client clock and the clock of a clock source.
/// </summary>
/// <param name="ClockSourceJID">JID of clock source.</param>
/// <param name="Callback">Callback method</param>
/// <param name="State">State object to pass on to callback method.</param>
public void MeasureClockDifference(string ClockSourceJID, SynchronizationEventHandler Callback, object State)
{
DateTimeHF ClientTime1 = SynchronizationClient.Now;
this.client.SendIqGet(ClockSourceJID, "<req xmlns='" + NamespaceSynchronization + "'/>", (sender, e) =>
{
DateTimeHF ClientTime2 = SynchronizationClient.Now;
XmlElement E;
long Latency100Ns;
long ClockDifference100Ns;
long?LatencyHF;
long?ClockDifferenceHF;
if (e.Ok && (E = e.FirstElement) != null && E.LocalName == "resp" && E.NamespaceURI == NamespaceSynchronization &&
DateTimeHF.TryParse(E.InnerText, out DateTimeHF ServerTime))
{
long dt1 = ServerTime - ClientTime1;
long dt2 = ClientTime2 - ServerTime;
Latency100Ns = dt1 + dt2;
ClockDifference100Ns = dt1 - dt2;
if (E.HasAttribute("hf") && long.TryParse(E.GetAttribute("hf"), out long Hf) &&
E.HasAttribute("freq") && long.TryParse(E.GetAttribute("freq"), out long Freq))
{
if (Freq != Stopwatch.Frequency)
{
double d = Hf;
d *= Stopwatch.Frequency;
d /= Freq;
Hf = (long)(d + 0.5);
}
dt1 = Hf - ClientTime1.Ticks.Value;
dt2 = ClientTime2.Ticks.Value - Hf;
LatencyHF = dt1 + dt2;
ClockDifferenceHF = dt1 - dt2;
}
else
{
LatencyHF = null;
ClockDifferenceHF = null;
}
}
else
{
e.Ok = false;
Latency100Ns = 0;
ClockDifference100Ns = 0;
LatencyHF = null;
ClockDifferenceHF = null;
}
try
{
Callback?.Invoke(this, new SynchronizationEventArgs(Latency100Ns, ClockDifference100Ns, LatencyHF, ClockDifferenceHF,
Stopwatch.Frequency, e));
}
catch (Exception ex)
{
Log.Critical(ex);
}
return(Task.CompletedTask);
}, State);
}
