Indicates the Cookie name used to maintain a persistent connection for HTTP client connections.

GSessionIDCookie = 'IDHTTPSESSIONID';

GSessionIDCookie is a constant value that represents the Cookie name used to set or retrieve the SessionID used in TIdHTTPRequestInfo and TIdHTTPResponseInfo to identify a persistent HTTP connection for the threaded client. A Cookie containing GSessionIDCookie is created for the TIdHTTPRequest and TIdHTTPResponse used by the HTTP connection when threaded client is executed.