Question

i am implementing in app purchases into a iOS application. I am using the server model (so all the in app items are stored on my server). The purchase model works like this:

user buys a item in the application
application sends the receipt-data to my server (receipt-data is a digitally signed chunk of data)
the server then sends a verification to the apple server
if the verification is successful the server returns data about the transaction

我先通过文件查询,但愿回答这些问题:

can i validate that the receipt-data came from the apple store (checking the signiture or do i have to come up with a mechanism for that)?
if a user buys a item that was removed from the store (due to an old cache) can i reject the purchase?

如果有任何这方面的经验,那将不胜感激。

Answer 1

You can validate the receipt-data come from the apple store by following Local validation.
If user buy a removed item. It s mean product_id does not exist in Itune. Transaction will be fail. You should update Product Request, when user use IAP.

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