Support for Xcode StoreKit Configuration Generated Receipts

[Jason Medeiros]

Does MerchantKit support Xcode StoreKit Configurations?

That's where you define your In-App Purchases in a .storekit file and assign it in your Scheme's Options. It allows for quick local testing where Xcode handles transactions and generating receipts. You can even run in the simulator, see transaction states, and more.

When running with a StoreKit Configuration file, validating receipts fails early deep in the parser.

Maybe it's just not supported or there is something obvious that I'm missing.

Specifically, a PayloadValueConversionError.invalidLength error is thrown with this stack trace:

ASN1.consumeLength(from:)
ASN1.Parser._parse(subdata:)
ASN1.Parse()
PKCS7ReceiptDataContainer.content()
LocalReceiptDataDecoder.decode(_:)
LocalReceiptValidator.validate(...)
...

Thanks for making MerchantKit.

[Benjamin Mayo]

Can you send me the failing receipt (found in the app's bundle on disk) and I can take a look at it?

[Jason Medeiros]

Thanks for replying. I've emailed you a receipt file at the email in your profile as the receipt contains the bundle ID of an unreleased product.

[Benjamin Mayo]

I know this is belated but I think I have cracked the issue here.

[Benjamin Mayo]

If you have the chance, please try a StoreKit Configuration generated receipt against the master branch. The issue should be resolved.