c# – PushSharp APNS通知错误不支持请求的功能

private static ApnsServiceBroker CreateApnsBroker(string certificate)
{
    // Configuration (NOTE: .pfx can also be used here)
    var config = newApnsConfiguration(
        ApnsConfiguration.ApnsServerEnvironment.Sandbox,certificate,ConfigurationManager.AppSettings["Cert_Passwd"],false);

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

                Logger.Info($"Apple Notification Failed:
                    ID={apnsNotification.Identifier},Code={statusCode}",ex);
            }
            else
            {
                // Inner exception might hold more useful information
                // like an ApnsConnectionException
                Logger.Info($"Apple Notification Failed for some unknown reason:
                    {ex.InnerException}",ex);
            }
                // Mark it as handled
                return true;
            });
    };

    apnsBroker.OnNotificationSucceeded += (notification) =>
    {
        Logger.Info($"Apple Notification Sent for device {notification.DeviceToken}");
    };

    return apnsBroker;
}

发送通知

private static void QueueNotification(
    ApnsServiceBroker apnsBroker,string deviceToken,string payload)
{
    // Queue a notification to send
    apnsBroker.QueueNotification(new ApnsNotification
    {
        DeviceToken = deviceToken,Payload = JObject.Parse(payload),Expiration = DateTime.Now.AddDays(2)
    });
}

当我在OnNotificationFailed中停止代理时捕获异常.在PushSharp和我的代码中我使用ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12
使用.p12证书进行voip通知,它以mmc格式添加
我的错是什么？