service.cs

protected override void OnStop()
{
    try
    {
        eventLog.WriteEntry("Unsubscribe channel " + channel);
        mrePubNub = new ManualResetEvent(false);
        pubnub.Unsubscribe<string>(channel, UnsubscribeCallback, SubscribeMethodForConnectCallback, UnsubscribeMethodForDisconnectCallback, ErrorCallback);
        mrePubNub.WaitOne(manualResetEventsWaitTimeout);
        eventLog.WriteEntry("Channel " + channel + " unsubscribed.");
        finalizeService = true;
    }
    catch (Exception erro)
    {
        eventLog.WriteEntry("Unsubscribe channel " + channel + "\r\n" + erro.Message);
    }
}