Get Cookies from HTTPClient instance (using CookieContainer, or raw headers)

getcookiesgist.cs

  /// <summary>
  /// Will return null if the cookie you were looking for isn't in the container.
  /// </summary>
  /// <param name="cookieName"></param>
  /// <param name="cookieContainer"></param>
  /// <returns></returns>
  protected async Task<Cookie> ExtractCookieWithName(string cookieName, CookieContainer cookieContainer)
  {
      var cookies = cookieContainer.GetCookies(new Uri(SharedConstants.WebsiteBaseUrl));
      var cookie = cookies[cookieName]; 
      return await Task.FromResult(cookie);
  }

  protected async Task<Cookie> ExtractNamedCookieFromRawHeaders(string cookieName, HttpResponseHeaders responseHeaders)
  {
      IEnumerable<string> newCookies;
      if (!responseHeaders.TryGetValues("Set-Cookie", out newCookies)) { return null; }

      string cookieString = newCookies.FirstOrDefault(nc => nc.Contains(cookieName));
      if (string.IsNullOrWhiteSpace(cookieString)) { return null; }

      var cookieStringElements = cookieString.Substring(cookieString.IndexOf(cookieName, StringComparison.OrdinalIgnoreCase))
                                             .Split(new char[] { '=', ';' }, StringSplitOptions.RemoveEmptyEntries);

      int valueIndex = cookieStringElements.ToList().IndexOf(cookieName) + 1;

      string value = cookieStringElements[valueIndex];
      const string path = "/";
      string domain = new Uri(SharedConstants.WebsiteBaseUrl).DnsSafeHost;
      {
          return await Task.FromResult(new Cookie(cookieName, value, path, domain));
      }
  }