Asp.Net Identity - Setting CookieDomain at runtime

Question

How can I set the CookieDOmain in the CookieAuthenticationOptions at runtime if i want to pull this value from the Request.Url or from some settings stored in my database?

Answer 1

It looks like MK. answer does not allow proper handling of token renewal when using SlidingExpiration option.

As a workaround, instead of supplying a custom cookie provider, it appears you can supply a custom cookie manager, and define your own methods for adding/removing the cookie.

To keep it simple in my case, I reuse the default cookie manager under the hood. (I can not extend it, its methods are not overridable.)

Here is the code I have ended up with:

using Microsoft.AspNet.Identity;
using Microsoft.Owin;
using Microsoft.Owin.Infrastructure;
using Microsoft.Owin.Security.Cookies;
using Microsoft.Owin.Security.DataProtection;
using Owin;

public class Startup
{
    public void Configuration(IAppBuilder app)
    {
        var options = new CookieAuthenticationOptions
        {
            AuthenticationType = DefaultAuthenticationTypes.ApplicationCookie,
            SlidingExpiration = true,
            CookieManager = new CustomCookieManager()
        };

        app.UseCookieAuthentication(options);
    }
}

public class CustomCookieManager : ICookieManager
{
    private readonly ICookieManager ConcreteManager;

    public CustomCookieManager()
    {
        ConcreteManager = new ChunkingCookieManager();
    }

    string ICookieManager.GetRequestCookie(IOwinContext context, string key)
    {
        return ConcreteManager.GetRequestCookie(context, key);
    }

    void ICookieManager.AppendResponseCookie(IOwinContext context, string key, string value, CookieOptions options)
    {
        SetupDomain(context, options);
        ConcreteManager.AppendResponseCookie(context, key, value, options);
    }

    void ICookieManager.DeleteCookie(IOwinContext context, string key, CookieOptions options)
    {
        SetupDomain(context, options);
        ConcreteManager.DeleteCookie(context, key, options);
    }

    private void SetupDomain(IOwinContext context, CookieOptions options)
    {
        // custom logic for assigning something to options.Domain
    }
}