let monitor = NWPathMonitor()
    let queue = DispatchQueue.global(qos: .background)

override func viewDidLoad() {
        super.viewDidLoad()
   monitor.pathUpdateHandler = { path in
            if path.status == .satisfied {
                print("Connected")
            }else if path.status == .unsatisfied {
                print("Not Connected")
            }
        }
        monitor.start(queue: queue)
}

override func viewWillDisappear(_ animated: Bool) {
                monitor.cancel()
 }