private static async Task OpenSharedChannelAsync()
{
await _mutex.WaitAsync().ConfigureAwait(false);
if (IsJoined || !_shouldJoinChannel)
{
return;
}
CloseSharedChannel();
_log.Info("Opening shared MDNS channel...");
while (!IsJoined && _shouldJoinChannel)
{
try
{
_client = new UdpAnySourceMulticastClient(IPAddress.Parse(BonjourUtility.MulticastDNSAddress), BonjourUtility.MulticastDNSPort);
_log.Debug("Joining multicast group...");
await _client.JoinGroupAsync().ConfigureAwait(false);
IsJoined = true;
BeginReceiveMessageLoop();
}
catch (Exception e)
{
_log.Warning("Caught exception while opening UDP socket");
_log.Debug("Exception details: " + e.ToString());
CloseSharedChannel();
}
if (!IsJoined)
{
await TaskEx.Delay(1000).ConfigureAwait(false);
}
else
{
_log.Info("Successfully opened shared MDNS channel.");
}
}
_mutex.Release();
}