Maybe we can do both, like having functions for control freaks and also
a flag for kind of autohandling mode ;)
Regards,
Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
https://www.opensips-solutions.com
https://www.siphub.com
On 25.11.2025 13:14, Giovanni Maruzzelli wrote:
On Tue, Nov 25, 2025, 11:57 Bogdan-Andrei Iancu <[email protected]>
wrote:
The result here should be a dlg dedicated function to generate a
PRACK from the onreply_route, like "dlg_answer_with_prack()" kind
of function? or should we look into a more automatic approach,
like flagging the dialog at creation to automatically generate the
PRACK upon replies flagged with so?
personally I'm a control freak and would like better an explicit
function, maybe even with parameters to modify things if needed :))
-giovanni
Regards,
Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
https://www.opensips-solutions.com
https://www.siphub.com
On 25.11.2025 11:46, Giovanni Maruzzelli wrote:
hello OpenSIPSers,
in previous mails has been noticed that various ITSPs are
starting to require PRACK support.
We know that PRACK belongs to endpoints, specifically phones and
B2BUAs.
But...
There can be a use case where OpenSIPS will work as SBC (not
necessarily using the b2b module)
So, we can have a case where we would like to support that the
dialogue module insert the 100rel in the Supported: INVITE's
header, and manage to send a PRACK method to acknowledge
provisional responses
If and when 100rel/PRACK are "generated" by OpenSIPS, they will
be filtered out (not propagated) to/from the endpoints, even if
the endpoint would like to support it
Reference RFC: https://www.ietf.org/rfc/rfc3262.txt
I believe this will be enough to make ITSPs happy.
Further developments can be moved to future.
Would be very very nice to have this feature backported to
OpenSIPS 3.6, being it the last of the 3.X series, and an LTS
Please let's gather here your thoughts , requests, corrections
and observations on this issue.
Have a nice Monday you all!
-giovanni
--
Sincerely,
Giovanni Maruzzelli
OpenTelecom.IT
cell: +39 347 266 56 18
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