[Zope] Session length

[Dennis Allison]

> 
> Is there anyway to use the Session Data Manager or a related component to
> measure the length of a session? What I actually would like is an event that
> fires the moment a session expires and one that fires the moment a session
> is initiated (well, the last thing you could do by inserting something in
> the session and checking whether it already was there).
> 
	The session_data object (in the temp folder) has hooks for session
	start and stop.  These hooks are also available through the API.  Read
	the Zope Book (2nd edition -- on-line) about sessions for more info.