paulocoutinhox
## Question Hi, thanks for this lib. I would just like to understand the mechanics behind the lib. Although I use it, I would just like to confirm with you that the transactions that Apple sends us are in a kind of queue in its lib and within the transaction loop this queue is being consumed. In practice, what I want to validate is actually just a guarantee that this queue will never be processed in parallel or multiple times, but always in the sequence of received transactions. Example for complete purchases (it run in parallel or only in sequence?): ```swift DispatchQueue.global(qos: .background).async { SwiftyStoreKit.completeTransactions(atomically: false) { purchases in ItunesSubscriptionSystemService.completePurchases(purchases: purchases, onSuccess: { DispatchQueue.global(qos: .background).async { var canFinishTransaction = false for purchase in purchases { // process transaction canFinishTransaction = false if purchase.transaction.transactionState == .purchased { let receiptData = SwiftyStoreKit.localReceiptData let receiptString = (receiptData != nil ? receiptData!.base64EncodedString(options: []) : "") //[...] //canFinishTransaction = true } else if purchase.transaction.transactionState == .restored { let receiptData = SwiftyStoreKit.localReceiptData let receiptString = (receiptData != nil ? receiptData!.base64EncodedString(options: []) : "") //[...] //canFinishTransaction = true } else if purchase.transaction.transactionState == .failed { //canFinishTransaction = false } sleep(1) if canFinishTransaction, purchase.needsFinishTransaction { SwiftyStoreKit.finishTransaction(purchase.transaction) } } } }, onError: { _ in // }) } } ``` Example about restore: ```swift DispatchQueue.main.async { UIUtil.showAlertLoading() } DispatchQueue.global(qos: .background).async { SwiftyStoreKit.restorePurchases(atomically: false, applicationUsername: "", completion: { results in DispatchQueue.global(qos: .background).async { if results.restoreFailedPurchases.count > 0 { // [...] // exit } else if results.restoredPurchases.count > 0 { var canFinishTransaction = false for (index, purchase) in results.restoredPurchases.enumerated() { // canFinishTransaction = true // [...] // UIUtil.hideAlertLoading() } } else { // UIUtil.hideAlertLoading() } } }) } ```