Быстрый; HTTP-запрос от UNUserNotificationCenter не работает: подключение к Интернету отключено

Вот мой рабочий код от AppDelegate.swift:

//  AppDelegate.swift

import UIKit
import UserNotifications

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate, UNUserNotificationCenterDelegate {

    var window: UIWindow?
    var backgroundTask: UIBackgroundTaskIdentifier = UIBackgroundTaskInvalid

    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
        UNUserNotificationCenter.current().delegate = self
        pushAction()
        return true
    }
    func registerForPushNotifications() {
        UNUserNotificationCenter.current().requestAuthorization(options: [.alert, .sound, .badge]) {
            (granted, error) in
            print("\nPermission granted: \(granted)\n")
            self.pushAction()
            guard granted else { return }
            self.getNotificationSettings()
        }
    }
    func getNotificationSettings() {
        UNUserNotificationCenter.current().getNotificationSettings { (settings) in
            print("\nNotification settings: \(settings)\n")
            guard settings.authorizationStatus == .authorized else { return }
            DispatchQueue.main.async(execute: {
                UIApplication.shared.registerForRemoteNotifications()
            })
        }
    }
    func httpRequest(file: String, postKey1: String, postValue1: String, postKey2: String, postValue2: String) {
        let url = URL(string: "https://www.example.com/\(file)")!
        var request = URLRequest(url: url)
        request.setValue("application/x-www-form-urlencoded", forHTTPHeaderField: "Content-Type")
        request.httpMethod = "POST"
        let postString = "\(postKey1)=\(postValue1)&\(postKey2)=\(postValue2)"
        request.httpBody = postString.data(using: .utf8)
        let task = URLSession.shared.dataTask(with: request) { data, response, error in
            guard let data = data, error == nil else {
                print("\nerror=\(String(describing: error))\n")
                return
            }
            if let httpStatus = response as? HTTPURLResponse, httpStatus.statusCode != 200 {
                print("\nstatusCode should be 200, but is \(httpStatus.statusCode)\n")
                print("\nresponse = \(String(describing: response))\n")
            }
            let responseString = String(data: data, encoding: .utf8)
            print("\nresponseString = \(String(describing: responseString))\n")
        }
        task.resume()
    }
    func application(_ application: UIApplication,
                     didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {
        let tokenParts = deviceToken.map { data -> String in
            return String(format: "%02.2hhx", data)
        }
        let token = tokenParts.joined()
        print("\nDevice Token: \(token)\n")
    }
    func application(_ application: UIApplication,
                     didFailToRegisterForRemoteNotificationsWithError error: Error) {
        print("\nFailed to register: \(error)\n")
    }
    func pushAction(){
        let replyAction = UNTextInputNotificationAction(
            identifier: "reply.action",
            title: "Reply to message",
            options:[],
            textInputButtonTitle: "Send",
            textInputPlaceholder: "Input/write text here")

        let pushNotificationButtons = UNNotificationCategory(
            identifier: "allreply.action",
            actions: [replyAction],
            intentIdentifiers: [],
            options: [])

        UNUserNotificationCenter.current().setNotificationCategories([pushNotificationButtons])
    }
    func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) {
//        If you don’t want to show notification when app is open, do something else here and make a return here.
//        Even if you don’t implement this delegate method, you will not see the notification on the specified controller. So, you have to implement this delegate and make sure the below line execute. i.e. completionHandler.
        completionHandler([.sound,.alert,.badge])
    }
    func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: @escaping () -> Void) {

        if response.actionIdentifier  ==  "reply.action" {
            if let textResponse =  response as? UNTextInputNotificationResponse {
                if UIApplication.shared.applicationState != .active{
                    self.registerBackgroundTask()
                }
                let sendText =  textResponse.userText
                print("\nReceived text message: \(sendText)\n")
                DispatchQueue.global(qos: .background).async {
                    self.httpRequest(file: "message.php", postKey1: "message", postValue1: sendText, postKey2: "user", postValue2: "Peter")
                }
            }
        }
        completionHandler()
    }
    func  registerBackgroundTask() {
        backgroundTask = UIApplication.shared.beginBackgroundTask { [weak self] in
            self?.endBackgroundTask()
        }
        assert(backgroundTask != UIBackgroundTaskInvalid)
    }
    func endBackgroundTask() {
        print("\nBackground task ended.\n")
        UIApplication.shared.endBackgroundTask(backgroundTask)
        backgroundTask = UIBackgroundTaskInvalid
    }
}

Не забывайте:

– Создать push-сертификат

– Вы увидите токен своего устройства в журнале консоли.

– Добавьте "category":"allreply.action" в полезную нагрузку ваших приложений следующим образом:

{
    "aps":{
        "alert":{
            "title":"Hello",
            "body":"This is a test!"
            },
            "badge":0,
            "sound":"default",
            "category":"allreply.action"
    }
}

Включите Push Notifications и Background Modes в Capabilities:

Большое спасибо Разе К. из Freelancer.com!