Hi Mathias, On Sun, 03 Dec 2006 18:08:39 +0100, "Mathias Gaunard" <mathias.gaunard@etu.u-bordeaux1.fr> said:

From the examples I have read, it seems session objects, which have a non-trivial lifetime, are allocated on the freestore and are then responsible of their own self-destruction.

Not only do I find it weird to see "delete this" but also I'm a bit confused given that I like to use RAII everywhere. That approach also has the problem that if an exception occurs somewhere in the session, bubbling will never destroy the session object.

Hmm, I can only find two such unreconstructed examples. Most of the examples (including the tutorial) now use shared_ptr and enable_shared_from_this to manage the session object lifetimes. This is the recommended approach.

Actually there should be a session manager containing the sessions. Maybe it could be interesting to provide helper objects to help with that kind of stuff. What do you think?

If you use shared_ptr/enable_shared_from_this then the io_service is essentially a session manager. If you interrupt() the io_service and then destroy it, any handlers associated with unfinished operations will be destroyed, which in turn means the session objects will be destroyed. Cheers, Chris