                 }
             }
 
+            if let httpResponse = response as? HTTPURLResponse {
+                if data != nil,
+                   httpResponse.statusCode == 200,
+                   httpResponse.url!.absoluteString.contains("api.twitter.com") {
+
+                    let responseText = String(data: data!, encoding: .utf8)
+                    // oauth_token=sample&oauth_token_secret=sample&oauth_callback_confirmed=true
+                    json = responseText?.queryStringParameters
+                    return
+                }
+
+            }
+
             guard let validData = data,
                 let jsonData = try? JSONSerialization.jsonObject(with: validData, options: .allowFragments) as? [String: Any] else {
                     print("requst fail: JSON could not be serialized because input data was nil.")

            }

            json = jsonData
        }) 

        task.resume()
    }

}

extension String {

    var queryStringParameters: Dictionary<String, String> {
        var parameters = Dictionary<String, String>()

        let scanner = Scanner(string: self)

        var key: NSString?
        var value: NSString?

        while !scanner.isAtEnd {
            key = nil
            scanner.scanUpTo("=", into: &key)
            scanner.scanString("=", into: nil)

            value = nil
            scanner.scanUpTo("&", into: &value)
            scanner.scanString("&", into: nil)

            if let key = key as String?, let value = value as String? {
                parameters.updateValue(value, forKey: key)
            }
        }
        
        return parameters
    }

    func urlEncodedString(_ encodeAll: Bool = false) -> String {
        var allowedCharacterSet: CharacterSet = .urlQueryAllowed
