public static void RemoveListener(IMulticastDNSListener listener)
{
if (listener == null)
{
throw new ArgumentNullException("listener");
}
bool stop = false;
lock (_listeners)
{
if (!_listeners.Contains(listener))
{
return;
}
_listeners.Remove(listener);
if (_listeners.Count == 0)
{
stop = true;
_shouldJoinChannel = false;
}
}
if (stop)
{
CloseSharedChannel();
}
}
public static async Task AddListenerAsync(IMulticastDNSListener listener)
{
if (listener == null)
{
throw new ArgumentNullException("listener");
}
lock (_listeners)
{
_listeners.AddOnce(listener);
_shouldJoinChannel = true;
}
if (!IsJoined)
{
await OpenSharedChannelAsync().ConfigureAwait(false);
}
}
