static IEnumerable <XElement> StreamiRadioNet(ITestableNetworkStream netStream)
{
var settings = new XmlReaderSettings {
ConformanceLevel = ConformanceLevel.Fragment, CheckCharacters = false
};
XmlParserContext context = new XmlParserContext(null, null, null, XmlSpace.None, Encoding.GetEncoding("ISO-8859-1")); // needed to avoid exception "WDR 3 zum Nachhören"
string[] waiting = new string[] { @" \ ", " | ", " / ", " - " };
int waited = 0;
using (reader = XmlReader.Create(netStream.GetStream(), settings, context)) // ^---
{
while (true)
{
if (reader.EOF)
{
Thread.Sleep(200); // need to re-open netstream, but how?
string waitingForSignal = " waiting for signal " + waiting[waited++ % 4] + " "; // + "connected=" + netStream.Socket.connected;
ConsoleShow.Status(new XElement("value", waitingForSignal), Lines.Waiting);
if (waited > 5 * 1000 / 200) // 60s
{
XElement el = new XElement("CloseStream");
yield return(el);
}
}
// reader.MoveToContent();
while (!reader.EOF)
{
if (reader.NodeType == XmlNodeType.Element)
{
XElement el;
try
{
el = XElement.ReadFrom(reader) as XElement; // can ReadFrom() forever, if iRadio = "Nicht verfügbar" or "NOXON"
}
catch
{
el = new XElement("ConsoleStreamiRadioExceptionXElementAfterReadFromFails");
}
if (el != null)
{
yield return(el);
}
}
else
{
try
{
reader.Read();
}
catch
{
// continue
}
}
}
}
}
}
public static IEnumerable <XElement> StreamiRadioNet(ITestableNetworkStream netStream)
{
var settings = new XmlReaderSettings {
ConformanceLevel = ConformanceLevel.Fragment, CheckCharacters = false, Async = true
};
XmlParserContext context = new XmlParserContext(null, null, null, XmlSpace.None, Encoding.GetEncoding("ISO-8859-1")); // needed to avoid exception on strings like "WDR 3 zum Nachhören"
CancellationTokenSource cancellation = new CancellationTokenSource(); // must not be (static) class variable
System.Timers.Timer timeoutTimer = new System.Timers.Timer(Properties.Settings.Default.ReadTimeout); // check if ReadFrom(reader) times out
timeoutTimer.Elapsed += (sender, e) => ParseTimeout(sender, e, cancellation);
using (reader = XmlReader.Create(netStream.GetStream(), settings, context))
{
while (true)
{
while (!reader.EOF)
{
if (reader.NodeType == XmlNodeType.Element)
{
XElement el;
TaskStatus tstat = TaskStatus.Created;
AggregateException tex = null;
try
{
if (!FormShow.Browsing)
{
timeoutTimer.Start();
}
// https://docs.microsoft.com/de-de/dotnet/core/porting/
Task <XNode> t = XNode.ReadFromAsync(reader, cancellation.Token);
el = t.Result as XElement; // ToDo: if iRadio = "Nicht verfügbar" or "NOXON" ==> ReadFromAsync() is canceled (OK!) but does not resume normal reading
tstat = t.Status; // also: no more data received if <browse> menu
tex = t.Exception;
if (!FormShow.Browsing)
{
timeoutTimer.Stop();
}
}
catch (Exception ex)
{
el = new XElement("CloseStream", "FormStreamiRadioExceptionXElementAfterReadFromFails" + ex.Message + "=" + tex?.Message);
}
if (el != null)
{
yield return(el);
}
}
else
{
try
{
reader.Read();
}
catch
{
// continue
}
}
}
}
}
// cancellation.Dispose();
}