protected virtual void OnStop(EventArgs e)
{
OnStopListening?.Invoke();
}
private async void DoStartListening(object o)
{
PipeWriter writer = null;
CancellationToken ct;
UdpClient udpClient = null;
Exception exception = null;
try
{
(writer, ct) = (ValueTuple <PipeWriter, CancellationToken>)o;
writer.OnReaderCompleted((ex, oo) =>
{
exception = ex;
_listening = false;
}, null);
using (udpClient = new UdpClient(Port))
{
_timer = new Timer(uc =>
{
if (!_listening || ct.IsCancellationRequested)
{
((UdpClient)uc)?.Close();
_timer?.Dispose();
}
}, udpClient, 1000, 1000);
while (_listening && !ct.IsCancellationRequested)
{
var result = await udpClient.ReceiveAsync();
var buffer = result.Buffer;
if (buffer.Length == 0)
{
continue;
}
if (!PacketParser.ValidatePacketHeaderAndLength(buffer))
{
continue;
}
await writer.WriteAsync(buffer, _cts.Token);
}
}
}
catch (Exception ex)
{
Logger.Error("Exception occured while receiving data from network", ex);
exception = ex;
}
finally
{
if (exception != null)
{
Logger.Warn("Finished writing because reader completed with exception", exception);
}
_timer?.Dispose();
writer?.Complete();
udpClient?.Close();
_listening = false;
}
OnStopListening?.Invoke(this, exception);
}
