I'm trying to use receipt validation with my server side. Everything is ok, but sometimes I see strange: 10 times validation is OK, but on 11 i get 21002 error. I dont know what to do. Sometimes I get error 21002 when I validate receipt first time after launch app.
App side:
func validateReceipt(productID: String) {
let receipt = NSData(contentsOfURL: NSBundle.mainBundle().appStoreReceiptURL!)!
let receiptdata = receipt.base64EncodedStringWithOptions(NSDataBase64EncodingOptions(rawValue: 0))
let request = NSMutableURLRequest(URL: NSURL(string: "my_server_url")!)
let session = NSURLSession.sharedSession()
request.HTTPMethod = "POST"
request.HTTPBody = receiptdata.dataUsingEncoding(NSUTF8StringEncoding)
let task = session.dataTaskWithRequest(request, completionHandler: {data, response, error -> Void in
let json = try! NSJSONSerialization.JSONObjectWithData(data!, options: .MutableLeaves) as? NSDictionary
if (error != nil) {
print(error!.localizedDescription)
let jsonStr = NSString(data: data!, encoding: NSUTF8StringEncoding)
print("Error could not parse JSON: '\(jsonStr)'")
}
else {
if let parseJSON = json {
if String(parseJSON["status"]! == "ok" {
//do something
print("Validate OK")
}else{
print("Validate NOK")
}
}
else {
let jsonStr = NSString(data: data!, encoding: NSUTF8StringEncoding)
print("Receipt Error: \(jsonStr)")
}
}
})
task.resume()
}
server side php script:
function getReceiptData($receipt)
{
$endpoint = 'https://sandbox.itunes.apple.com/verifyReceipt';
$ch = curl_init($endpoint);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, $receipt);
$response = curl_exec($ch);
$errno = curl_errno($ch);
$errmsg = curl_error($ch);
curl_close($ch);
$msg = $response.' - '.$errno.' - '.$errmsg;
echo $response;
}
foreach ($_POST as $key=>$value){
$newcontent .= $key.' '.$value;
}
$new = trim($newcontent);
$new = trim($newcontent);
$new = str_replace('_','+',$new);
$new = str_replace(' =','==',$new);
if (substr_count($new,'=') == 0){
if (strpos('=',$new) === false){
$new .= '=';
}
}
$new = '{"receipt-data":"'.$new.'"}';
$info = getReceiptData($new);
Everything I do based on example http://www.brianjcoleman.com/tutorial-receipt-validation-in-swift/
So, sometimes I feel that app send to serverside wrong receipt and php script cant parse it and I receive 21002 error status. Any suggestion?
Try removing from receipt
the characters '\n' and '\r' and replacing '+' with'%2B' before sending it to the server. Something like this:
NSURL *receiptURL = [[NSBundle mainBundle] appStoreReceiptURL];
NSData *receipt = [NSData dataWithContentsOfURL:receiptURL];
NSString *receiptDataString = [receipt base64EncodedStringWithOptions:0];
receiptDataString=[receiptDataString stringByReplacingOccurrencesOfString:@"+" withString:@"%2B"];
receiptDataString=[receiptDataString stringByReplacingOccurrencesOfString:@"\n" withString:@""];
receiptDataString=[receiptDataString stringByReplacingOccurrencesOfString:@"\r" withString:@""];
NSString *postDataString = [NSString stringWithFormat:@"receipt-data=%@", receiptDataString];
NSString *length = [NSString stringWithFormat:@"%lu", (unsigned long)[postDataString length]];
[request setValue:length forHTTPHeaderField:@"Content-Length"];
[request setHTTPBody:[postDataString dataUsingEncoding:NSASCIIStringEncoding]];