IAP receipt on device verification

gistfile1.m

- (void)paymentQueue:(SKPaymentQueue *)queue
 updatedTransactions:(NSArray *)transactions
{
    for (SKPaymentTransaction *transaction in transactions) {
        switch (transaction.transactionState) {
            case SKPaymentTransactionStatePurchased:
                {
                    NSURL *receiptURL = [[NSBundle mainBundle] appStoreReceiptURL];
                    NSData *receipt = [NSData dataWithContentsOfURL:receiptURL];
                    NSDictionary *requestContents = @{
                        @"receipt-data" : [receipt base64EncodedStringWithOptions:0]
                    };
                    NSError *error;
                    NSData *requestData = [NSJSONSerialization dataWithJSONObject:requestContents
                                                                          options:0
                                                                            error:&error];
                    NSURL *storeURL = [NSURL URLWithString:@"https://sandbox.itunes.apple.com/verifyReceipt"];
                    NSMutableURLRequest *storeRequest = [NSMutableURLRequest requestWithURL:storeURL];
                    [storeRequest setHTTPMethod:@"POST"];
                    [storeRequest setHTTPBody:requestData];

                    // Make a connection to the iTunes Store on a background queue.
                    NSOperationQueue *queue = [[NSOperationQueue alloc] init];
                    [NSURLConnection sendAsynchronousRequest:storeRequest queue:queue
                                           completionHandler:^(NSURLResponse *response, NSData *data, NSError *connectionError) {
                                           if (connectionError) {

                                           } else {
                                               NSError *error;
                                               NSDictionary *jsonResponse = [NSJSONSerialization JSONObjectWithData:data options:0 error:&error];
                                               NSLog(@"jsonReponse %@", jsonResponse);
                                               if (!jsonResponse) { }
                
                                           }
                                           }];