public async Task StartDiscoveringAsync()
{
var runningTask = Task.Run(async () => { await Task.Delay(TimeSpan.MaxValue, _cancellationToken.Token).ContinueWith(_ => { }); });
await Task.Delay(TimeSpan.FromSeconds(5), _cancellationToken.Token).ContinueWith(_ => { });
using (var deviceLocator = new SsdpDeviceLocator())
{
deviceLocator.StartListeningForNotifications();
deviceLocator.DeviceAvailable += async (s, e) => { await UpnpDeviceFound(e.DiscoveredDevice); };
while (!_cancellationToken.IsCancellationRequested)
{
Task<IEnumerable<DiscoveredSsdpDevice>> searchTask;
try
{
searchTask = deviceLocator.SearchAsync("upnp:rootdevice", TimeSpan.FromSeconds(10));
await Task.WhenAny(runningTask, searchTask);
}
catch (Exception e)
{
_log.Error(e.Message, e);
continue;
}
if (_cancellationToken.IsCancellationRequested)
{
break;
}
var devices = searchTask.Result;
if (devices == null)
{
continue;
}
foreach (var device in devices)
{
await UpnpDeviceFound(device);
}
await Task.Delay(TimeSpan.FromSeconds(60), _cancellationToken.Token).ContinueWith(_ => { });
}
}
}
