Kentico 12 MVC Anti-Forgery Token and Output Caching

Hi,

We are currently have a Kentico 12 MVC project which is hosted in a Web Farm.

We are also using output caching to improve performance.

But recently we are experience an issue with Anti-Forgery Token validation (@Html.AntiForgery()). And this form are not a Form Widget. And we are using ajax to post the form.

<form id="formtoken" action="/" method="post">
    @Html.AntiForgery()
</form>

$.ajax({
   url: urlPost,
   type: 'POST',
   data: { _RequestVerificationToken: $('body').find('input[name=__RequestVerificationToken]:first').val()
   },
   success: function success(obj) {
        alert(object.Message);
   }
});

We assumed that this is because of the output cache and that the anti-forgery token is part of the output cache data and also think that when the cookie expires this token that is cached is no longer valid.

And I have read about the Kentico HtmlHelperExtions that has a method AntiForgery() which ensures the token for cached request.

@Kentico.Web.Mvc.HtmlHelperExtensions.Kentico(Html).AntiForgeryToken()

Have anyone tried this and could this help resolve the issue that we are encountering.

Thank you very much in advance.