2008/11/24 Timo Bruhn <[EMAIL PROTECTED]>: > Now nua sends a bye with session timeout to the proxy after 400-400/3 -32 > (approximately 235) seconds. > > This is too early in my opinion. > > RFC 4028 Section 10 says: > "Similarly, if the side not performing refreshes does not receive a > session refresh request before the session expiration, it SHOULD send > a BYE to terminate the session, slightly before the session > expiration. The minimum of 32 seconds and one third of the session > interval is RECOMMENDED." > > This has been referenced in nua_session.c in function session_timer_set and > the following calculations are done: > > interval -= 32 >interval / 6 ? interval / 3 : 32 + interval /3 > > I think the RFC could also be interpreted as: > > interval -= 32 > interval / 3 ? interval / 3 : 32; > > Maybe the RFC is a bit unclear here, but the second code line should be more > tolerant with user agents that don't refresh the session at half of the > expiration > time (which is recommended by the RFC).
As far as I can recall the current calculation is because some protocol tester wanted it that way; your approach works probably better in practice. I'll check if there is something that breaks with that change (probably not) and submit a patch. -- Pekka.Pessi mail at nokia.com ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ Sofia-sip-devel mailing list Sofia-sip-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/sofia-sip-devel
