Event type signalled when an HTTP session cannot be restored using the session ID Cookie.

TIdHTTPInvalidSessionEvent = procedure (Thread: TIdPeerThread; ARequestInfo: TIdHTTPRequestInfo; AResponseInfo: TIdHTTPResponseInfo; var VContinueProcessing: Boolean; const AInvalidSessionID: String) of object;

Header sent in the client request.

Header to include in a response.

Indicates that a new session can be created.

Session ID found in a Request Cookie.

Client connection generating the event notification.

TIdHTTPInvalidSessionEvent is an event type signalled when an HTTP server cannot locate an existing TIdHTTPSession for a threaded client connection having the session identifier specified in InvalidSessionID.

TIdHTTPInvalidSessionEvent is the type used to represent the TIdHTTPServer.OnInvalidSession property, and is signalled when a threaded client attempts to execute using an existing session in the TIdHTTPSessionList. Sessions are restored using the GSessionID Cookie in the HTTP Request.

An event handler for the TIdHTTPInvalidSessionEvent notification can set ContinueProcessing to True to allow the HTTP server to create a new HTTP session for the client.