Apple Notification Failed: ID=2, Code=ConnectionError - asp.net

Question

I'm using PushSharp 4.0.4, installed from NuGet
In the OnNotificationFailed(ApnsNotification, AggregateException) event of the Apns broker, I often get this exception:
Apple Notification Failed: ID=2, Code=ConnectionError .
According to me it appears due to p12 file. It may not have all the right to access by the external API.
private void SendPushNotification(string deviceToken, string message)
{
try
{
//Get Certificate
var appleCert = System.IO.File.ReadAllBytes(HttpContext.Current.Server.MapPath("Certificates.p12"));
//Configuration(NOTE: .pfx can also be used here)
var config = new ApnsConfiguration(ApnsConfiguration.ApnsServerEnvironment.Sandbox ,appleCert, "1234567890");
//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;
string desc = $"Apple Notification Failed: ID={apnsNotification.Identifier}, Code={statusCode}";
Console.WriteLine(desc);
lblStatus.Text = desc;
}
else
{
string desc = $"Apple Notification Failed for some unknown reason : {ex.InnerException}";
// Inner exception might hold more useful information like an ApnsConnectionException
Console.WriteLine(desc);
lblStatus.Text = desc;
}
// Mark it as handled
return true;
});
};
apnsBroker.OnNotificationSucceeded += (notification) =>
{
lblStatus.Text = "Apple Notification Sent successfully!";
};
var fbs = new FeedbackService(config);
fbs.FeedbackReceived += (string devicToken, DateTime timestamp) =>
{
// Remove the deviceToken from your database
// timestamp is the time the token was reported as expired
};
//Start Proccess
apnsBroker.Start();
if (deviceToken != "")
{
apnsBroker.QueueNotification(new ApnsNotification
{
DeviceToken = deviceToken,
Payload = JObject.Parse(("{\"aps\":{\"badge\":1,\"sound\":\"oven.caf\",\"alert\":\"" + (message + "\"}}")))
});
}
apnsBroker.Stop();
}
catch (Exception)
{
throw;
}
}

Answer 1

I'm using PushSharp 4.0.4, installed from NuGet .
To be run APNS push notification in C#.I got an error:
Apple Notification Failed: ID=1, Code=ConnectionError
Solution:
In this Error to Export key chain private key certificate .p12 format and place the certificate try again.To be get the out put.