/// <summary>
/// Deletes the cookie with the given key by setting an expired state. If a matching chunked cookie exists on
/// the request, delete each chunk.
/// </summary>
/// <param name="context"></param>
/// <param name="key"></param>
/// <param name="options"></param>
public void DeleteCookie(IOwinContext context, string key, CookieOptions options)
{
if (context == null)
{
throw new ArgumentNullException("context");
}
if (options == null)
{
throw new ArgumentNullException("options");
}
var webContext = context.Get <HttpContextBase>(typeof(HttpContextBase).FullName);
if (webContext == null)
{
Fallback.DeleteCookie(context, key, options);
return;
}
string escapedKey = Uri.EscapeDataString(key);
var requestCookies = webContext.Request.Cookies;
var cookie = requestCookies[escapedKey];
string requestCookie = (cookie == null ? null : cookie.Value);
int chunks = ParseChunksCount(requestCookie);
AppendResponseCookie(
context,
key,
string.Empty,
new CookieOptions
{
Path = options.Path,
Domain = options.Domain,
HttpOnly = options.HttpOnly,
SameSite = options.SameSite,
Secure = options.Secure,
Expires = new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc),
});
for (int i = 1; i <= chunks; i++)
{
AppendResponseCookie(
context,
key + "C" + i.ToString(CultureInfo.InvariantCulture),
string.Empty,
new CookieOptions
{
Path = options.Path,
Domain = options.Domain,
HttpOnly = options.HttpOnly,
SameSite = options.SameSite,
Secure = options.Secure,
Expires = new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc),
});
}
}
