let receiptUrl = Bundle.main.appStoreReceiptURL
    let receiptdata: NSData = try! NSData(contentsOf:receiptUrl!)

    let request = NSMutableURLRequest(url: NSURL(string: "https://etc/verifyReceipt.php")! as URL)

    let session = URLSession.shared
    request.httpMethod = "POST"

    request.httpBody = receiptdata as Data

    let task = session.dataTask(with: request as URLRequest, completionHandler: {data, response, error -> Void in ...