[Kamailio-Devel] RFC: Dialog: Feature-Extensions

[Jerome Martin]

On Wed, 2008-09-17 at 09:58 +0200, Klaus Darilion wrote:
> 
> Jerome Martin schrieb:
> >     . adding a new state to the state_machine, RINGING
> 
> 
> I think if a more detailed state machine is needed, maybe we still 
> should stay with the standard conform state machine but add 
> "sub-states", e.g. RINGING would be a sub-state of the "early" state.

Yes, I was thinking the same yesterday night while looking at it.
Basically the changes would be :
1) add sub states trying and ringing for EARLY
2) move deleted dialog in a dialog_archive table after deleting them
from memory
3) add sub states redirected, failed, cancelled, timed-out, terminated
to DELETED
4) add ability to have one dialog per branch, saving the R-URI,
P-Asserted-Identity, and destination IP used for relay
5) store additional data in the dialog table/structure:
   . for DELETED/redirected, the redirect uri
   . for DELETED/failed, the reply code and reason
     (I am unsure is cancelled is just a specific case of this with 487,
because currently it is the TMCB_DELETED callback that triggers the
event TDEL in the state machine, and I believe this CB is triggered on
CANCEL, before we have a chance to see any 487)
   . for DELETED/terminated, the origin of the BYE (caller/callee/proxy)
and dialog_duration

Of course, the things I want to save here are pretty custom, so I think
a more generic mechanism should be found so that everyone could
customise this to his needs.

Regards,
-- 
Jérôme Martin | LongPhone
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