Bug - A call to SSPI failed, see inner exception.

[danicomas]

A few days ago the library stopped working and it showed me the next error:

Channel Created for: PushSharp.Apple.ApplePushService
Channel Exception: PushSharp.Apple.ApplePushService -> System.Security.Authentic
ation.AuthenticationException: A call to SSPI failed, see inner exception. ---> System.ComponentModel.Win32Exception: The message received was unexpected or badly
  --- End of inner exception stack trace ---
   en System.Net.Security.SslState.StartSendAuthResetSignal(ProtocolToken messag
e, AsyncProtocolRequest asyncRequest, Exception exception)
   en System.Net.Security.SslState.StartSendBlob(Byte[] incoming, Int32 count, A
syncProtocolRequest asyncRequest)
   en System.Net.Security.SslState.ProcessReceivedBlob(Byte[] buffer, Int32 coun
t, AsyncProtocolRequest asyncRequest)
   en System.Net.Security.SslState.StartReceiveBlob(Byte[] buffer, AsyncProtocol
Request asyncRequest)
   en System.Net.Security.SslState.StartSendBlob(Byte[] incoming, Int32 count, A
syncProtocolRequest asyncRequest)
   en System.Net.Security.SslState.ForceAuthentication(Boolean receiveFirst, Byt
e[] buffer, AsyncProtocolRequest asyncRequest)
   en System.Net.Security.SslState.ProcessAuthentication(LazyAsyncResult lazyRes
ult)
   en PushSharp.Apple.FeedbackService.Run(ApplePushChannelSettings settings, Can
cellationToken cancelToken)
   en PushSharp.Apple.ApplePushService.<>c__DisplayClass4.<.ctor>b__1(Object sta
te)
Failure: PushSharp.Apple.ApplePushService -> The maximum number of Send attempts
 to send the notification was reached! -> {"aps":{"alert":"Hello!!.","ba
dge":7,"sound":"sound.caf"},"PushNotificationType":"Hi","OtherParam":"Hi!"}

I have tested to direct connection without firewall and the result is the same.

My program's code is the next:

var push = new PushBroker();
push.OnNotificationSent += NotificationSent;
push.OnChannelException += ChannelException;
push.OnServiceException += ServiceException;
push.OnNotificationFailed += NotificationFailed;
push.OnDeviceSubscriptionExpired += DeviceSubscriptionExpired;
push.OnDeviceSubscriptionChanged += DeviceSubscriptionChanged;
push.OnChannelCreated += ChannelCreated;
push.OnChannelDestroyed += ChannelDestroyed;

var appleCert = File.ReadAllBytes(Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "certificate.p12"));

push.RegisterAppleService(new ApplePushChannelSettings(appleCert, ""));

push.QueueNotification(new AppleNotification()
                                       .ForDeviceToken("ca883fbcfcb1eda42af71d81ca82c60a087fe10e462a7a940a6bab4066cba826")
                                       .WithAlert("Hello!!.")
                                       .WithBadge(7)
                                       .WithSound("sound.caf")
                                       .WithCustomItem("PushNotificationType", "Hi")
                                       .WithCustomItem("OtherParam", "Hi!"));

Console.WriteLine("Waiting for Queue to Finish...");
push.StopAllServices();
Console.WriteLine("Queue Finished, press return to exit...");
Console.ReadLine();

Thanks in advance!

[coffeesmurf]

Hi,

We were having the same issue using the now depricated APNS-Sharp library (ancestor to PushSharp). I submitted a pull request for APNS-Sharp that fixes the issue based on my tests.

The modification was to change (in ApplePushChannel.cs)

stream.AuthenticateAsClient(this.appleSettings.Host, this.certificates, System.Security.Authentication.SslProtocols.Ssl3, false);

to

stream.AuthenticateAsClient(this.appleSettings.Host, this.certificates, System.Security.Authentication.SslProtocols.Tls, false);

I didn't find a confirmation on this, but it looked like the SSL3 protocol was no longer supported by the Sandbox APNS. Like others that reported the issue, my notifications against the Production APNS were still working.

You can find the pull request here:

https://github.com/Redth/PushSharp/pull/369/files

[mobilesoftsmith]

I encountered this issue too. I originally thought it's my .p12 file issue. But now I am sure this is a bug when I pushed a message through another library successfully with the same .p12 file.

[danicomas]

I have closed the issue, the problem was the .p12 certificate. Dev and Production app ID was the same.

Thanks!

[suresh-dev]

still i am facing the problem can anyone please let me know what i have missed.
I have ssl certificate installed on my machine

[Harinder]

SSL3 support has been removed by apple. It is for both Pre-Prod (Development) and Production environment. However, TLS should be working fine.

Here is the link to official announcement.
https://developer.apple.com/news/?id=10222014a

@coffeesmurf thanks for your changes!

[bhanu111]

I have ssl and tls both enabled on my domain and i am using jdsoft library to send ios push notifications. It was working fine but from 7 days i am not able to send push notifications. I am getting this error "A Call to SSPI failed, see inner exception". Can some help please?

[pedroadaodev]

I was using "PushSharp" version="2.0.4.0". Just updated to "PushSharp" version="2.2.1.0" and it started working. Thanks! =)