Question Unity IAP - Restoring subscriptions

Hi,

We need to implement restore functionality for purchases on iOS. We offer subscriptions and consumables in our products, so all the restored purchases should be subscriptions (it looks like they are by looking at the product ids).
I have followed the documentation and added a method that triggers the purchase restore functionality for ios using the `IAppleExtensions`.

`IStoreListener.ProcessPurchase(PurchaseEventArgs purchaseEvent)` is successfully invoked, however it is invoked for a bunch of transactions that we cannot validate against our backend records using the transaction Id.
Also, recently purchased subscriptions doesn't seem to be coming back.

1. Is the ProcessPurchase callback being invoked for previous purchases in any particular order? (i.e. most recent first)
2. Does unity IAP pick up sandbox payments properly ?
3. Does unity IAP pick up subscriptions on trial ?

NOTE: I Also noticed that `ProcessPurchase` was triggers as part of the initialisation process on iOS, however the documentations states that that shouldn't be the case?

unity version : 2020.3.38f1
iap version: 4.1.5

 

Thanks for your promt response.

When I say pick up i basically ask whether `ProcessPurchase` will be invoked for sandbox payments/ subscription on trial.
The problem I am trying to resolve is, how can I detect what's the latest/valid purchase from all these subscription purchase transactions ?

When i try to test the functionaity I :
1. buy a subscription product (sandbox)
2. delete the app
3. re-install
4. try to restore

At this point, none of the transaction ids that are being restored maps to the latest purchase.
Also it takes some time before unity IAP allows a subscription purchase to go through again (but i think that's a problem with the nature of sandbox subscriptions that don't last long)

 

Isn't `purchaseToken` Android specific ?

I am getting wrong transactionIds on iOS. I am querying the transaction id that can be found in

Code (CSharp):

1. purchaseEvent.purchasedProduct.transactionID

. Am i missing something ?

 

When you say purchaseProduct.receipt are you referring to the purchasedProduct property in PurchaseEventArgs that is of type Product ?

The receipt in there is a string. Is this the same receipt documented here? https://docs.unity3d.com/Manual/UnityIAPPurchaseReceipts.html

If so, how do we get the IPurchaseReceipt (and therefore the AppleInAppPurchaseReceipt) from the string receipt ?

Can I deserialise the payload from the receipt into an AppleInAppPurchaseReceipt?

 

Thanks! I used cloud verification instead and managed to get the original transaction id.

When attempting to restore purchases (subscriptions in my case) do we need to call `StoreController.ConfirmPendingPurchase` for any result we get back?

I get some weird behaviour where, when i try to restore purchases and nothing comes back from Unity IAP, and then I try purchase the product, unity IAP fails the purchase with a reason `Duplicate Transaction`.

 

We have this exact same issue on iOS with Unity IAP 4.4.1

 

But it doesn't. Here is my case:

I got 2 subscriptions which must be verified on app start. I was able to test it on iOS only using Test Flight using my actual Apple ID account (not a sandbox user).

By some reason, each time starting the app I am forced to make the subscription purchase because these 2 subscription products just doesn't have a receipt so I can't verify, is subscription active or not.
Even knowing the fact it's not related to purchase restore feature (because app wasn't re-isntalled) but trying to restore purchases using `appleStore.RestoreTransactions` method, I receive only `true` as a result, but never receive
ProcessPurchase callback. Also, checking the subscriptions receipts after restore I can't get any info, because receipts were not found.
Furthermore, once I see these logs trying to restore the purchase - by some reason there wre unfinished transaction

Spoiler: XCode log

Code (CSharp):

1.  

How to get the ProcessPurchase callback and make the things works as expected?

I am on Unity 2021.3 and IAP 4.5.1


UPDATE
Finally, I could make it work using Sandbox user login in AppStore app settings. However, there are still no callback after purchase restore request - if user without any subscription tries to restore purchased, I still will get `true` as a response. Sounds logically if that callback represents just a restore purchase request result, but in terms of app development it's impossible to understand in right time does user has a purchase or not. If he has, I will get the process purchase callback what is fine, but if not, I need to check the receipt again after getting `true` in purchase restore request, but I need to do it in some delayed time, becuase can be the case that
process purchase callback can be delayed...