[링크] Push Notification Services 프로그래밍 가이드

 

APN / APNS (Apple Push Notification Services)

 : https://developer.apple.com/library/ios/documentation/NetworkingInternet/Conceptual/RemoteNotificationsPG

 

 

 

GCM (Google Cloud Messaging for Android)

 : http://developer.android.com/google/gcm