public async ReusableTask AnnounceAsync(ITracker tracker, CancellationToken token)
{
Check.Tracker(tracker);
// If the user initiates an Announce we need to go to the correct thread to process it.
await ClientEngine.MainLoop;
try {
var trackerTier = Tiers.First(t => t.Trackers.Contains(tracker));
AnnounceRequest args = RequestFactory.CreateAnnounce(TorrentEvent.None);
await AnnounceTrackerAsync(trackerTier, args, tracker, token);
} catch {
}
}