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Hi, I’m seeing odd behaviour with session timers in the
following case. I have a fix that I’ve tested out (see attached
patch), but I’d like to run it by you (Scott) before committing it as I believe
you’re more familiar with that code... (note that the default Session-Expires used in the following
is 90 seconds) DUM ------------------- proxy INVITE ----> (no refresher preference specified) <---- 100 <---- 180 <---- 200 (refresher=”uas”) ACK ----> … 45 seconds go by … <---- INVITE (refresher=”uas”) 200 ----> (refresher=”uas”) … 45 seconds go by … <---- INVITE (refresher=”uas”) INVITE ----> (refresher=”uac”) At this point, DUM is confused and thinks that it is the refresher,
so we get the INVITE glare condition, and things go downhill from there.
The problem seems to be logic in InviteSession that gets executed when it
receives the first refresh after 45 seconds. I’ve tested out the attached patch, but please let me
know if you think I’ve missed something… Thanks, - Jeremy - Jeremy Geras Software Developer CounterPath Solutions Inc. (formerly NewHeights Software Corp.) |
Attachment:
session_timers_fix_sipfoundry.patch
Description: Binary data