get cookies in request (xamarin form)
public interface IPlatformCookieStore
{
/// <summary>
/// List of cookies pulled from the cookie storage manager
/// on the device/platform you're on. Can be quite an expensive call.
/// </summary>
IEnumerable<Cookie> CurrentCookies { get; }
/// <summary>
/// Debug method, just lists all cookies in the <see cref="CurrentCookies"/> list
/// </summary>
void DumpAllCookiesToLog();
/// <summary>
/// Clear cookies for site/url (otherwise auth tokens for your provider
/// will hang around after a logout, which causes problems if you want
/// to log in as someone else)
/// </summary>
void DeleteAllCookiesForSite(string url);
}