IAPs actually validating the receipt (Swift)

Question

I have been trying to implement receipt validation in my spritekit game. I have been following various tutorial and basically ended up with this code

enum Reques         


        

Answer 1

Today, I have trouble with this problem. And I referenced on this answer. But I discover new way to check subscription is expired or not.

This is my code in Objective-C.

NSDictionary *jsonResponse = [NSJSONSerialization JSONObjectWithData:resData options:0 error:&error]; 

// this is response from AppStore
NSDictionary *dictLatestReceiptsInfo = jsonResponse[@"latest_receipt_info"];
long long int expirationDateMs = [[dictLatestReceiptsInfo valueForKeyPath:@"@max.expires_date_ms"] longLongValue];
long long requestDateMs = [jsonResponse[@"receipt"][@"request_date_ms"] longLongValue];
isValidReceipt = [[jsonResponse objectForKey:@"status"] integerValue] == 0 && (expirationDateMs > requestDateMs);

Hope this help.