Hi Jeff,
You can use proxy commands for different traffic flows but keep in mind
that once you trigger a B2B session in the main request route (with the
b2b_init_request() function), you will only see the rest of the B2B
related traffic in the dedicated routes. In those routes it is
recommended to not use proxy-like signaling functions.
Regards,
Vlad
.--
Vlad Patrascu
OpenSIPS Core Developer
http://www.opensips-solutions.com
On 28.01.2022 17:30, Jeff Pyle wrote:
Great. Is it still recommended to keep a particular OpenSIPS instance
either all proxy commands or all B2B commands? Or, do we have some
flexibility to mix them since B2B commands live in the script now?
- Jeff
On Wed, Jan 26, 2022 at 9:50 AM Vlad Patrascu <[email protected]> wrote:
Hi Jeff,
Sending NOTIFYs is supported by using the "n" flag for the
b2b_bridge() [1] function. Just note that some mechanisms from RFC
3515 2.4.4
<https://datatracker.ietf.org/doc/html/rfc3515#section-2.4.4> are
not implemented though, such as the ability to terminate the
subscription prematurely by unsubscribing or refreshing the
subscription.
[1]
https://opensips.org/docs/modules/3.2.x/b2b_logic.html#func_b2b_bridge
Regards,
--
Vlad Patrascu
OpenSIPS Core Developer
http://www.opensips-solutions.com
On 24.01.2022 17:38, Jeff Pyle wrote:
OpenSIPS 3.2 supports some slick in-script B2B functions,
documented here [1] with an example for handling REFER. Does
this approach include support for the subscription and the
subsequent NOTIFYs required by RFC 3515 2.4.4 [2]
<https://datatracker.ietf.org/doc/html/rfc3515#section-2.4.4>?
I have a need to write some REFER handling functions into an
existing OpenSIPS SBC stack, and I need to send accurate NOTIFYs
back to the REFER-er. Terminating the subscription with the first
NOTIFY isn't good enough, sadly. I'm hoping this is the right
way to do it.
[1]
https://www.opensips.org/Documentation/Tutorials-B2BUA-3-2#toc10
[2] https://datatracker.ietf.org/doc/html/rfc3515#section-2.4.4
- Jeff
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