Subject says it all.
I ran into an issue with a buggy Asterisk
where the re-INVITE (refresh) from my app would overlap with a re-INVITE 
from the Asterisk.
Both parties respond with '491 Request pending' and that's it.

The bug in Asterisk is that it never actually retries the re-INVITE 
(yes, it's a very old version; no, an upgrade is _not_ possible *grrr*).

The effect is, that I've got a dangling call (re-INVITE from Asterisk 
came because the caller hung up)
because my application only hangs up calls if some kind of higher level 
error occurs.

When I understand RFC3261 correctly, the UAC must retry the request 
after some time and since (again: if I understand correctly)
the UAC/UAS roles are transaction based: Shouldn't BOTH parties retry 
their INVITE requests?

I'll have to backport the fix in Asterisk but isn't this a problem in 
Sofia, too?

Regards,
Andreas


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