How to get cookie renewal information in .NET Core 3.1 with CookieAuthentication?

I am using .NET Core 3.1 and would like to know how to get cookie renewal information when a user's login cookie expire time is extended.

I have tried adding the following code to startup.cs, but context.ShouldRenew always returns false, even though the login cookie's expire time has been extended:

            services.AddAuthentication(CookieAuthenticationDefaults.AuthenticationScheme)
                .AddCookie(options =>
                {
                    options.LoginPath = new PathString("/Member/Login");
                    options.SlidingExpiration = true;
                    options.ExpireTimeSpan = TimeSpan.FromSeconds(10);
                    options.Events = new CookieAuthenticationEvents
                    {
                        OnValidatePrincipal = context =>
                        {
                            if (context.ShouldRenew)
                            {
                                Console.WriteLine("Cookie expire time should be update");
                                // I want to write some text
                                // But `context.ShouldRenew` always get false
                            }

                            return Task.CompletedTask;
                        }
                    };
                });

What should be the correct way to get cookie renewal information in .NET Core 3.1 with CookieAuthentication?

I think you need to use another property to detect if cookie has expired. Description of the property ShouldRenew:

> If true, the cookie will be renewed

In other words: It can be false, even if cookies have expired.

You can use HttpContext property to check if any cookies have expired:

options.Events = new CookieAuthenticationEvents
{
    OnValidatePrincipal = context =>
    {
        var cookie = context.HttpContext.Request.Cookies["YOUR_COOKIE_NAME"];

        if (cookie.Expires < DateTime.Now)
        {
            // Your code here...
        }

        return Task.CompletedTask;
    }
};