Fixing subscription verifying in receipt

[grishamsc]

Verifying subscription check ["latest_receipt_info"] section instead
["receipt"]["in_app"]

//
I do pull request for first time, hope did all correct.

I think you should check latest_receipt_info section instead in_app, because this sections refresh every time you do receipt verification on iTunes server. in_app section doesn’t refresh guaranteed. 100% it refresh only if u perform receipt refresh.

[bizz84]

@grishamsc sorry for the very late reply.

Is there some documentation recommending to use receipt["latest_receipt_info"] rather than ["receipt"]["in_app"]?

[grishamsc]

bizz84
hm, i didn't looked in documentation, but I notice this by a lot of experiments.
["receipt"]["in_app"] may refresh or may not refresh without refreshing receipt on device. Often it doesn't occur. If you validate subscription on server, not on device, you need every time refresh receipt on device and load it to server.
receipt["latest_receipt_info"] refresh and give actual information every time you send receipt to iTunes server for verification.

I use code, which I include in pull request in my application and all work fine)

I think I should look up this information in documentation and show it to you to be pretty sure.

[nlogioco]

@bizz84 @grishamsc
I didn't realize this pull request existed.

I created an issue ticket: #129

This link explains why to use "latest_receipt_info"

https://developer.apple.com/library/content/releasenotes/General/ValidateAppStoreReceipt/Chapters/ValidateRemotely.html

The above link explains why.
From link above:

latest_receipt_info : Only returned for iOS 6 style transaction receipts for auto-renewable subscriptions. The JSON representation of the receipt for the most recent renewal.

[bizz84]

@nlogioco @grishamsc I agree, it seems more appropriate to use latest_recepit_info.

I have just merged a major change to SwiftyStoreKit and should have some time to look into this properly this week.

[bizz84]

Verified the documentation and ran some tests on the sandbox. I made a new PR for this: #134

[bizz84]

Closing as this is now fixed in version 0.7.1: https://github.com/bizz84/SwiftyStoreKit/releases