Apple push notifications service in PHP on IIS server

I successfully sent push notification from apache web server with PHP script. Then I have transferred the complete code and html to IIS. After trying to send the push notification, I get following warni开发者_StackOverflow中文版ng:

Warning (2): stream_socket_client() [http://php.net/function.stream-socket-client]: SSL operation failed with code 1. OpenSSL Error messages:
error:14094410:SSL routines:SSL3_READ_BYTES:sslv3 alert handshake failure [APP\controllers\push_notifications_controller.php, line 79]Code | Context$text   =   "test from hugh"
$apnsHost   =   "gateway.sandbox.push.apple.com"
$apnsPort   =   2195
$apnsCert   =   "../vendors/certificate.pem"
$streamContext  =   resource
$error  =   0
$errorString    =   ""stream_socket_client - [internal], line ??
PushNotificationsController::__send_push_notification() - APP\controllers\push_notifications_controller.php, line 79
PushNotificationsController::index() - APP\controllers\push_notifications_controller.php, line 58
Dispatcher::_invoke() - CORE\cake\dispatcher.php, line 204
Dispatcher::dispatch() - CORE\cake\dispatcher.php, line 171
require - APP\webroot\index.php, line 83
[main] - CORE\index.php, line 55

I think that something is wrong with the certificate.pem file, or the way IIS is handling ssl. Could you please help?

You first need to ensure that the ports (2195 and 2196) on the firewall are open.

Also: Error Using PHP for iPhone APNS <-- said it was a problem with the certificate..