auto renewable subscription, Cancel notification?

Question

I'm working with IAP Auto-Renewable Subscription, my question is if a user cancels the subscription then how will my server be notified.?

Answer 1

if the receipt status is 21006 and there is a key named cancellation_date, then it's a cancellation, you can find the new expiration date in that key but it's a formatted date, if you need a better value to parse check for receipt['latest_expired_receipt_info']['cancellation_date_ms'] same as expires_date

There is more info here http://developer.apple.com/library/mac/#documentation/NetworkingInternet/Conceptual/StoreKitGuide/RenewableSubscriptions/RenewableSubscriptions.html