Question

How can I override login Url?

Could you add it to AuthenticateAttribute as property?

Answer 1

When using ServiceStacks’ authentication mechanism you inherit from either ServiceStackController or ServiceStackController<T> which in turn inherits the former.

The login URL is dictated by the LoginRedirectUrl property of ServiceStackController.

public virtual string LoginRedirectUrl
{
    get { return "/login?redirect={0}"; }
}

Since it is virtual you can simply override it in your own Controller. Or even better, make your own abstract base controller that inherits from ServiceStackController. Then let all your controllers inherit that one. You now have a single point where you control things like the login URL.

public abstract class MyControllerBase : ServiceStackController
{
    public override string LoginRedirectUrl
    {
        get { return "/letslogin?redirectTo={0}"; }
    }
}