How to handle cookie expiration in asp.net core

Question

I would like to know how to properly handle the fact that the cookie expired? Is it possible to execute a custom action ?

What I would like to achieve is that when the c

Answer 1

It seems there is no event for your case but you can use OnRedirectToLogin to change redirect uri. Here is an example:

OnRedirectToLogin = async (context) =>
{
      var binding = context.HttpContext.Features.Get()?.GetProvidedTokenBindingId();
      var tlsTokenBinding = binding == null ? null : Convert.ToBase64String(binding);
      var cookie = context.Options.CookieManager.GetRequestCookie(context.HttpContext, context.Options.CookieName);
      if (cookie != null)
      {
            var ticket = context.Options.TicketDataFormat.Unprotect(cookie, tlsTokenBinding);

            var expiresUtc = ticket.Properties.ExpiresUtc;
            var currentUtc = context.Options.SystemClock.UtcNow;
            if (expiresUtc != null && expiresUtc.Value < currentUtc)
            {
                  context.RedirectUri += "&p1=yourparameter";
            }
       }
       context.HttpContext.Response.Redirect(context.RedirectUri);

}