property CookieManager: TIdCookieManager;

CookieManager is a published TIdCookieManager property in TIdHTTP, and enables maintenance of persistent state information using Cookies for the HTTP Client connection. CookieManager is accessed when Cookies are detected during processing of headers in an HTTP response, or when preparing headers for an HTTP request. 

CookieManager is used by the HTTP client when AllowCookies is True. 

The client will ensure that CookieManager is instantiated prior to adding TIdCookieRFC2109 or TIdCookieRFC2965 class instances to the collection maintained in CookieManager. CookieManager is freed in the Destroy method.