Renci.SshNet.ForwardedPortRemote.StopPort C# (CSharp) Method

        protected override void StopPort(TimeSpan timeout)
        {
            if (!ForwardedPortStatus.ToStopping(ref _status))
                return;

            base.StopPort(timeout);

            // send global request to cancel direct tcpip
            Session.SendMessage(new CancelTcpIpForwardGlobalRequestMessage(BoundHost, BoundPort));
            // wait for response on global request to cancel direct tcpip or completion of message
            // listener loop (in which case response on global request can never be received)
            WaitHandle.WaitAny(new[] { _globalRequestResponse, Session.MessageListenerCompleted }, timeout);

            // unsubscribe from session events as either the tcpip forward is cancelled at the
            // server, or our session message loop has completed
            Session.RequestSuccessReceived -= Session_RequestSuccess;
            Session.RequestFailureReceived -= Session_RequestFailure;
            Session.ChannelOpenReceived -= Session_ChannelOpening;

            // wait for pending channels to close
            _pendingChannelCountdown.Signal();
            _pendingChannelCountdown.Wait(timeout);

            _status = ForwardedPortStatus.Stopped;
        }