StoreKit for iOS - Subscriptions Question

I am using the new subscription model with StoreKit in a test application of mine, but I have a few questions:

• If the user cancels the subscription, how am I informed 开发者_运维问答of this? Or do I have to monitor the date myself (using the value transactionDate)

• If the subscription is cancelled, the user can now longer restore this

  purchase if the subscription is

  expired right?

Thank you!

You aren't informed if the user cancels. When you validate a receipt, Apple should give you a receipt for the most recent subscription period with a status of 0. If this isn't the case, the user is no longer subscribed.

The user can't restore an expired subscription.