在 C# 中发送推送通知

Posted 2023-02-23

【中文标题】在 C# 中发送推送通知

【英文标题】：Send Push Notification in C#

【发布时间】：2017-07-11 03:55:36

【问题描述】：

我正在尝试在 VS C# Web 项目中使用以下编码向 ios 设备发送推送通知。

实际上下面的编码没有任何错误，但我最终没有在我的设备上收到任何通知，有人知道吗？谢谢。

static void Main(string[] args)
    
        var config = new ApnsConfiguration(ApnsConfiguration.ApnsServerEnvironment.Sandbox, @"D:\Share\Certificates_Prod.p12", "");

        // Create a new broker
        var apnsBroker = new ApnsServiceBroker(config);

        // Wire up events
        apnsBroker.OnNotificationFailed += (notification, aggregateEx) => 

            aggregateEx.Handle(ex => 

                // See what kind of exception it was to further diagnose
                if (ex is ApnsNotificationException)
                
                    var notificationException = (ApnsNotificationException)ex;

                    // Deal with the failed notification
                    var apnsNotification = notificationException.Notification;
                    var statusCode = notificationException.ErrorStatusCode;

                    Console.WriteLine($"Apple Notification Failed: ID=apnsNotification.Identifier, Code=statusCode");

                
                else
                
                    // Inner exception might hold more useful information like an ApnsConnectionException           
                    Console.WriteLine($"Apple Notification Failed for some unknown reason : ex.InnerException");
                

                // Mark it as handled
                return true;
            );
        ;

        apnsBroker.OnNotificationSucceeded += (notification) => 
            Console.WriteLine("Apple Notification Sent!");
        ;

        // Start the broker
        apnsBroker.Start();

        apnsBroker.QueueNotification(new ApnsNotification
        
            DeviceToken = "58f0f386003a4b7be..................................",
            Payload = JObject.Parse("\"aps\":\"badge\":7")
        );

        // Stop the broker, wait for it to finish   
        // This isn't done after every message, but after you're
        // done with the broker
        apnsBroker.Stop();
    

【问题讨论】：

你有什么问题？是否没有响应阅读以确认您的消息已发送？还有int[] HexValue = new int[] 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0A, 0x0B, 0....是什么0x00为什么这么多？

现在我没有收到任何通知，您对 HexStringToByteArray 函数有什么建议吗？

是的，我在我的回答中发布了它

谢谢~~我试过了还是不行。

您创建了一个开发者帐户并注册了您的应用程序正确吗？还有你使用旧格式的原因吗？

【参考方案1】：

您使用的是旧版 API。如果您希望继续使用它，那么 here 已经完成了 5 年的 C# 测试。

Apple 现在支持通过 http/2 的 APN。与其编写自己的代码，不如查看一些现有的库，例如 PushSharp，它们将为您处理低级 API 和错误处理。

// Configuration (NOTE: .pfx can also be used here)
var config = new ApnsConfiguration (ApnsConfiguration.ApnsServerEnvironment.Sandbox, 
    "push-cert.p12", "push-cert-pwd");

// Create a new broker
var apnsBroker = new ApnsServiceBroker (config);

// Wire up events
apnsBroker.OnNotificationFailed += (notification, aggregateEx) => 

    aggregateEx.Handle (ex => 

        // See what kind of exception it was to further diagnose
        if (ex is ApnsNotificationException) 
            var notificationException = (ApnsNotificationException)ex;

            // Deal with the failed notification
            var apnsNotification = notificationException.Notification;
            var statusCode = notificationException.ErrorStatusCode;

            Console.WriteLine ($"Apple Notification Failed: ID=apnsNotification.Identifier, Code=statusCode");

         else 
            // Inner exception might hold more useful information like an ApnsConnectionException           
            Console.WriteLine ($"Notification Failed for some unknown reason : ex.InnerException");
        

        // Mark it as handled
        return true;
    );
;

apnsBroker.OnNotificationSucceeded += (notification) => 
    Console.WriteLine ("Apple Notification Sent!");
;

// Start the broker
apnsBroker.Start ();

foreach (var deviceToken in MY_DEVICE_TOKENS) 
    // Queue a notification to send
    apnsBroker.QueueNotification (new ApnsNotification 
        DeviceToken = deviceToken,
        Payload = JObject.Parse ("\"aps\":\"alert\":\"" + "Hi,, This Is a Sample Push Notification For IPhone.." + "\",\"badge\":1,\"sound\":\"default\"")
    );


// Stop the broker, wait for it to finish   
// This isn't done after every message, but after you're
// done with the broker
apnsBroker.Stop ();

【讨论】：

最后我按照您的建议更新了我对 PushSharp 的编码参考，但仍然没有发生任何事情，请您看看好吗？谢谢。

【参考方案2】：

You Convert HexStringToBytes 函数错误。它在错误的地方有几个 0x00 值：

int[] HexValue = new int[]  0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F ;

应该是：

int[] HexValue = new int[]  0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F ;

我还会推荐一些更清洁的东西。试试这样的：

public static byte[] HexStringToByteArray(string Hex)
  
    if(1 == (Hex.length&1))  throw new Exception("Hex string cannot have an odd number of characters");
    return Enumerable.Range(0, hex.Length <<1 ) 
        .Select(x => Convert.ToByte(hex.Substring(x << 1, 2), 16)) 
        .ToArray();

【讨论】：

谢谢~，你的建议我试过了，还是不行，还是没有收到通知

【参考方案3】：

问题已修复，就像 APNS 不允许空消息一样，我将有效负载 JSON 更新为：

JObject.Parse("\"aps\": \"alert\": \"joetheman\",\"sound\": \"default\",\"message\": \"Some custom message for your app\",\"id\": 1234")

它对我有用。