ASP.NET MVC Authorize Attribute does a 302 redirect when the user is not authorized

Question

MSDN explicitly says it should do 401 redirect, but I\'m getting a 302 redirect on FF, and this is causing problems in AJAX requests as the returned status is 200 (from the red

Answer 1

I really like this solution. By changing the 302 response on ajax requests to a 401 it allows you to setup your ajax on the client side to monitor any ajax request looking for a 401 and if it finds one to redirect to the login page. Very simple and effective.

Global.asax:

protected void Application_EndRequest()
{
    if (Context.Response.StatusCode == 302 &&
        Context.Request.Headers["X-Requested-With"] == "XMLHttpRequest")
    {
        Context.Response.Clear();
        Context.Response.StatusCode = 401;
    }
}

Client Side Code:

 $(function () {
      $.ajaxSetup({
        statusCode: {
          401: function () {
            location.href = '/Logon.aspx?ReturnUrl=' + location.pathname;
          }
        }
      });
    });