Pushsharp发送apple通知失败:SSL流无法作为客户端进行身份验证

我试图使用ASP上的Pushsharp库向apple设备发送推送通知。NET MVC项目托管在IIS上。

我的代码:

 public static void SendAppleNotification()
        {
            // Configuration (NOTE: .pfx can also be used here)
            byte[] arr = File.ReadAllBytes("D:\\MySoftware\\pa_Dev.pem");

            var config = new ApnsConfiguration(ApnsConfiguration.ApnsServerEnvironment.Sandbox,
     arr, "1234");

            // 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();


                // Queue a notification to send
                apnsBroker.QueueNotification(new ApnsNotification
                {
                    DeviceToken = "660E4433785EFF2B2AA29D5076B039C969F1AADD839D79261328F40B08D26497",
                    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();


        }

笔记: 1-试图将pem扩展更改为p12,但仍然出现相同的问题。 2-我尝试使用发送推送通知 https://pushtry.com/ 并且其工作正常,所以不会从证书文件或密码中发出。

pushsharp内部的问题或缺少配置必须在我的机器上完成,有人知道吗?