I've implemented ReCaptcha in MVC3 using ReCaptcha.net NuGet package http://recaptchanet.codeplex.com/wikipage?title=How%20to%20Use%20Recaptcha%20in%20an%20ASP.NET%20MVC%20Web%20Application. All working well, except I'd like to see if I can implement this as Async as it is sometimes quite slow, and we may have some volume on these pages.
The instructions say
RecaptchaVerificationResult recaptchaResult = await recaptchaHelper.VerifyRecaptchaResponse();
if (recaptchaResult != RecaptchaVerificationResult.Success)
{
ModelState.AddModelError("", "Incorrect captcha answer.");
}
however, this is using the MVC4 await syntax. Is there a way I can use this method within the MVC3 async framework?
I did try a quick hack, converting the controller to AsyncController naming the method with an Async suffix and wrapping the entire action in a Task.Factory.StartNew(() => { ... }); while using the non-async syntax, but RecaptchaVerificationHelper recaptchaHelper = this.GetRecaptchaVerificationHelper(); complains about a lack of HTTPContext.
So, can anyone help me with doing ReCaptcha asynchronously in MVC3