private void onChannelClosed(object sender, EventArgs e)
        {
            UdpInputChannel channel = (UdpInputChannel)sender;

            lock (_CurrentChannelLockObject)
            {
                if (_CurrentChannel == channel)
                {
                    _CurrentChannel = null;
                }
            }
        }
        private bool createOrRetrieveChannel(out UdpInputChannel channel)
        {
            bool createChannel = false;

            channel = _CurrentChannel;
            if (channel == null)
            {
                lock (_CurrentChannelLockObject)
                {
                    channel = _CurrentChannel;
                    if (channel == null)
                    {
                        channel         = new UdpInputChannel(this);
                        channel.Closed += onChannelClosed;
                        _CurrentChannel = channel;
                        createChannel   = true;
                    }
                }
            }
            return(createChannel);
        }