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The broadcast is done before the session data is destroyed and the listen-handlers are executed in context of the session that is being closed. Here is an example that destroys a Prolog thread that is associated to a thread:
:- listen(http_session(end(SessionId, _Peer)), kill_session_thread(SessionID)). kill_session_thread(SessionID) :- http_session_data(thread(ThreadID)), thread_signal(ThreadID, throw(session_closed)).
Succeed without any effect if SessionID does not refer to an active session.
If http_close_session/1 is called from a handler operating in
the current session and the CGI stream is still in state
header, this predicate emits a
Set-Cookie to expire the