如何向多个设备（iOS）发送推送通知？

Question

我正在尝试优化我服务器上的推送通知。现在我一个一个地发送那些（带有一个旧图书馆），这需要一段时间（4小时）。

我重构了我的服务以发送带有大量设备令牌的通知（现在我尝试批量处理 500 个令牌）。为此，我正在使用Redth/PushSharp 库。我关注了sample code，然后我对其进行了调整以将通知发送到多个设备令牌。

PushService service = new PushService();

//Wire up the events
service.Events.OnDeviceSubscriptionExpired += new PushSharp.Common.ChannelEvents.DeviceSubscriptionExpired(Events_OnDeviceSubscriptionExpired);
service.Events.OnDeviceSubscriptionIdChanged += new PushSharp.Common.ChannelEvents.DeviceSubscriptionIdChanged(Events_OnDeviceSubscriptionIdChanged);
service.Events.OnChannelException += new PushSharp.Common.ChannelEvents.ChannelExceptionDelegate(Events_OnChannelException);
service.Events.OnNotificationSendFailure += new PushSharp.Common.ChannelEvents.NotificationSendFailureDelegate(Events_OnNotificationSendFailure);
service.Events.OnNotificationSent += new PushSharp.Common.ChannelEvents.NotificationSentDelegate(Events_OnNotificationSent);
service.Events.OnChannelCreated += new PushSharp.Common.ChannelEvents.ChannelCreatedDelegate(Events_OnChannelCreated);
service.Events.OnChannelDestroyed += new PushSharp.Common.ChannelEvents.ChannelDestroyedDelegate(Events_OnChannelDestroyed);

//Configure and start ApplePushNotificationService
string p12Filename = ...
string p12FilePassword = ...

var appleCert = File.ReadAllBytes(p12Filename);

service.StartApplePushService(new ApplePushChannelSettings(true, appleCert, p12FilePassword));

var appleNotification = NotificationFactory.Apple();

foreach (var itemToProcess in itemsToProcess)
{
    itemToProcess.NotificationDateTime = DateTime.Now;
    mobile.SubmitChanges();

    string deviceToken = GetCleanDeviceToken(itemToProcess.MobileDevice.PushNotificationIdentifier);
    appleNotification.ForDeviceToken(deviceToken);
}

service.QueueNotification(appleNotification
    .WithAlert(itemsToProcess[0].MobileDeviceNotificationText.Text)
    .WithSound("default")
    .WithBadge(0)
    .WithCustomItem("View", itemsToProcess[0].Value.ToString()));

//Stop and wait for the queues to drains
service.StopAllServices(true);

然后我尝试向 2 台设备发送 3 条通知。只有第一个设备得到了它们（问题与设备无关，因为我分别尝试了它们）。 紧接着在PushChannelBase class 中抛出一个 OperationCanceledException。所以我不知道怎么了。有什么想法吗？

Answer 1

您应该为每个要处理的项目排队单独的通知。
无法在单个通知上设置多个设备令牌。 OperationCanceledException 将会发生，因为您这样做了。

Answer 2

示例：控制台 C# 应用程序

假设

1. 您有有效的生产和开发证书
2. 您已在数据库中存储了多个设备令牌
3. 您有来自数据库的通知

4. 您正在使用PushSharp 库

   using System;
   using System.Collections.Generic;
   using System.Linq;
   using System.Text;
   using PushSharp;
   using PushSharp.Core;
   using PushSharp.Apple;
   using System.IO;
   
   namespace MyNotification
   {
       class Program
       {
           //args may take "true" or "false" to indicate the app is running for
           //development or production (Default = false which means Development)
           static void Main(string[] args)
           {
               bool isProduction = false;
               if (args != null && args.Length == 1)
               {
                   Console.Write(args[0] + Environment.NewLine);
                   bool.TryParse(args[0], out isProduction);
               }
               try
               {
                   //Gets a notification that needs sending from database
                   AppNotification notification = AppNotification.GetNotification();
                   if (notification != null && notification.ID > 0)
                   {          
                       //Gets all devices to send the above notification to         
                       List<IosDevice> devices = IosDevice.GetDevices(!isProduction);
                       if (devices != null && devices.Count > 0)
                       {
                           PushBroker push = new PushBroker();//a single instance per app
                           //Wire up the events for all the services that the broker registers
                           push.OnNotificationSent += NotificationSent;
                           push.OnChannelException += ChannelException;
                           push.OnServiceException += ServiceException;
                           push.OnNotificationFailed += NotificationFailed;
                           push.OnDeviceSubscriptionExpired += DeviceSubscriptionExpired;
                           push.OnChannelCreated += ChannelCreated;
                           push.OnChannelDestroyed += ChannelDestroyed;
                           //make sure your certifcates path are all good  
                           string apnsCertFile = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "../../Certificate/Certificates_Apple_Push_Production.p12");
                           if (!isProduction)
                               apnsCertFile = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "../../Certificate/Certificates_Apple_Push_Development.p12");
                           var appleCert = File.ReadAllBytes(apnsCertFile);
                           push.RegisterAppleService(new ApplePushChannelSettings(isProduction, appleCert, "135TrID35")); //Extension method
   
                           foreach (IosDevice device in devices)
                           {
                               //if it is required to send additional information as well as the alert message, uncomment objects[] and WithCustomItem 
                               //object[] obj = { "North", "5" };
   
                               push.QueueNotification(new AppleNotification()
                              .ForDeviceToken(device.DeviceToken)
                              .WithAlert(DateTime.Now.ToString())//(notification.AlertMessage)
                                   //.WithCustomItem("Link", obj)
                              .WithBadge(device.BadgeCount + 1)
                              .WithSound(notification.SoundFile));//sound.caf
                           }
                           push.StopAllServices(waitForQueuesToFinish: true);
                       }
                   }
                   Console.WriteLine("Queue Finished, press return to exit...");
                   Console.ReadLine();
               }
               catch (Exception ex)
               {
                   Console.WriteLine(ex.Message);
                   Console.ReadLine();
               }
           }
   
           static void NotificationSent(object sender, INotification notification)
           {
               Console.WriteLine("Sent: " + sender + " -> " + notification);
           }
   
           static void NotificationFailed(object sender, INotification notification, Exception notificationFailureException)
           {
               Console.WriteLine("Failure: " + sender + " -> " + notificationFailureException.Message + " -> " + notification);
           }
   
           static void ChannelException(object sender, IPushChannel channel, Exception exception)
           {
               Console.WriteLine("Channel Exception: " + sender + " -> " + exception);
           }
   
           static void ServiceException(object sender, Exception exception)
           {
               Console.WriteLine("Service Exception: " + sender + " -> " + exception);
           }
   
           static void DeviceSubscriptionExpired(object sender, string expiredDeviceSubscriptionId, DateTime timestamp, INotification notification)
           {
               Console.WriteLine("Device Subscription Expired: " + sender + " -> " + expiredDeviceSubscriptionId);
           }
   
           static void ChannelDestroyed(object sender)
           {
               Console.WriteLine("Channel Destroyed for: " + sender);
           }
   
           static void ChannelCreated(object sender, IPushChannel pushChannel)
           {
               Console.WriteLine("Channel Created for: " + sender);
           }  
       }
   
   }