i am implementing the Using DotNetOpenAuth login to google account of the person and retrieve all contact emails.
i am getting the below error:
This message has already been processed. This could indicate a replay attack in progress
My code is:
[ValidateInput(false)]
public ActionResult Authenticate(string returnUrl)
{
var openid = new OpenIdRelyingParty();
var response = openid.GetResponse();
if (response == null)
{
// Stage 2: user submitting Identifier
/*var req = openid.CreateRequest(Request.Form["openid_identifier"]);
var fields = new DotNetOpenAuth.OpenId.Extensions.SimpleRegistration.ClaimsRequest();// .SimpleRegistrationRequestFields();
fiel ...
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