IOS Push Notification

Hai Friends…

I have working IOS PUSH NOTIFICATION using ionic and cordova.But I have create the certificate from apple account and install cordova push notification.using cordova push notificatin plugin i get the device token
By using that certificate i push the notification to device from my server using php curl but i getting the following error “Failed to connect to gateway.sandbox.push.apple.com port 2195: Connection refused”.

Please advice…

Thanks,
Venkatesh G