问当用户使用URL重写2登录时重定向至HTTPS

EN

//http://weblogs.asp.net/dwahlin/archive/2009/08/25/requiring-ssl-for-asp-net-mvc-controllers.aspx
public class RequiresSsl : ActionFilterAttribute
{
    public override void OnActionExecuting(ActionExecutingContext filterContext)
    {
        var req = filterContext.HttpContext.Request;
        var res = filterContext.HttpContext.Response;

        //Check if we're secure or not and if we're on the local box
        if (!req.IsSecureConnection && !req.IsLocal)
        {
            if (req.Url != null)
            {
                var builder = new UriBuilder(req.Url) { Scheme = Uri.UriSchemeHttps, Port = 443, Host = req.Url.Host.StartsWith("www.", StringComparison.OrdinalIgnoreCase) ? req.Url.Host : "www." + req.Url.Host };
                res.Redirect(builder.Uri.ToString());
            }
        }
        base.OnActionExecuting(filterContext);
    }
}