Can't get any cookies with C# HttpClient

Question

I'm trying to get cookies on the Spotify login page with C# and the HttpClient class. However, the CookieContainer is always empty when I know cookies are being set. I'm not sending any headers, but it should still give me the cookie(s) because when I send a GET request without any headers with python (requests module) I get the csrf token. Here's my code:

using System;
using System.Net;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Threading.Tasks;
using System.Reflection;
using System.Runtime.InteropServices;
using System.Collections;
using System.Web;

class Program
{
    static void Main()
    {
        Task t = new Task(MakeRequest);
        t.Start();
        Console.WriteLine("Getting cookies!");
        Console.ReadLine();
    }

    static async void MakeRequest()
    {
        CookieContainer cookies = new CookieContainer();
        HttpClientHandler handler = new HttpClientHandler();

        handler.CookieContainer = cookies;
        Uri uri = new Uri("https://accounts.spotify.com/en/login/?_locale=en-US&continue=https:%2F%2Fwww.spotify.com%2Fus%2Faccount%2Foverview%2F");
        HttpClient client = new HttpClient(handler);
        var response = await client.GetAsync(uri);
        string res = await response.Content.ReadAsStringAsync();
        Console.WriteLine(cookies.Count);
        foreach (var cookie in cookies.GetCookies(uri)) {
            Console.WriteLine(cookie.ToString());
        }
    }
}

It seems pretty simple to me, but the program always says there's 0 cookies. Anyone know what's going on?

Answer 1

I tried to write the response headers to the console with Console.WriteLine(response.Headers) and a Set-Cookie header with the csrf token was printed to the console. So it seems that HttpClient doesn’t count cookies in this header as actual cookies, thus not adding these said cookies to the CookieContainer.