reCAPTCHA ajax verification ReferenceError: success is not defined - html

Question

I am getting an error when I post my ajax call to the reCAPTCHA verification API. I get a "ReferenceError: success is not defined" error on correct input and "ReferenceError: incorrect is not defined" on incorrect insertion of the CAPTCHA. Here is my code:
$.ajax({
type: 'POST',
contentType: "application/json",
dataType: 'jsonp',
url: "http://www.google.com/recaptcha/api/verify",
data: {
privatekey: 'XXXXXXXXXXXXXXXXX',
remoteip: document.getElementById("ipaddress").innerHTML,
challenge: Recaptcha.get_challenge(),
response: Recaptcha.get_response()
},
async: false,
success: function (resp) {
if (resp == "false") {
alert('Please enter captcha words correctly');
reloadRecaptcha();
}
else {
alert('Yeah');
}
}
});

Answer 1

Well I solved my own problem by sending the post data to the page controller.
JS:
$.ajax({
type: 'GET',
contentType: "application/json",
url: "/Register/veriCAPTCHA",
data: {
privateKey: 'XXXXXXXXXXXXXXXX',
remoteip: document.getElementById("ipaddress").innerHTML,
challenge: Recaptcha.get_challenge(),
response: Recaptcha.get_response()
},
success: function (data) {
if (data == false) {
valiCAPTCHA = false;
ALERT("The CAPTCHA code you entered is invalid. Please try again.");
Recaptcha.reload();
}
else {
valiCAPTCHA = true;
}
}
});
CS controller:
[HttpGet]
public JsonResult veriCAPTCHA(string privateKey, string remoteip, string challenge, string response)
{
string postData = String.Format("privatekey={0}&remoteip={1}&challenge={2}&response={3}",
privateKey, remoteip,
challenge, response);
JsonResult result = new JsonResult();
byte[] postDataBuffer = System.Text.Encoding.ASCII.GetBytes(postData);
Uri serviceUri = new Uri("http://api-verify.recaptcha.net/verify", UriKind.Absolute);
try
{
HttpWebRequest webRequest = (HttpWebRequest)System.Net.WebRequest.Create(serviceUri);
webRequest.ContentType = "application/x-www-form-urlencoded";
webRequest.ContentLength = postDataBuffer.Length;
webRequest.Method = "POST";
//incase you are using a proxy server
IWebProxy proxy = WebRequest.GetSystemWebProxy();
proxy.Credentials = System.Net.CredentialCache.DefaultCredentials;
webRequest.Proxy = proxy;
Stream requestStream = webRequest.GetRequestStream();
requestStream.Write(postDataBuffer, 0, postDataBuffer.Length);
HttpWebResponse webResponse = (HttpWebResponse)webRequest.GetResponse();
string jsonResponse = string.Empty;
using (StreamReader sr = new StreamReader(webResponse.GetResponseStream()))
jsonResponse = sr.ReadToEnd();
string[] tokens = jsonResponse.Split(new char[] { '\n' });
if (tokens.Length == 2)
{
return Json(false, JsonRequestBehavior.AllowGet);
}
else
{
return Json(false, JsonRequestBehavior.AllowGet);
}
}
catch (Exception ex)
{
return Json(false, JsonRequestBehavior.AllowGet);
}
}