[SR-Users] Create new listener on the fly

[Carsten Bock]

Hi Hossein,

due to those limitations, we are using a custom, in-house solution for our
MNO/MVNO deployments, which we haven't released as open-source (yet).

Thanks,
Carsten

--
Carsten Bock I CTO & Founder

ng-voice GmbH

Trostbrücke 1 I 20457 Hamburg I Germany
T +49 179 2021244 I www.ng-voice.com

Registry Office at Local Court Hamburg, HRB 120189
Managing Directors: Dr. David Bachmann, Carsten Bock


Am Mi., 26. Okt. 2022 um 18:29 Uhr schrieb H Yavari <hyavari at rocketmail.com
>:

> Hi Casrten,
>
> Thanks for the comment. I know you provide IMS, have you contributed to
> Kamailio IPsec, or do you have something in-house solution for this part?
> (I hope this question will not be off-topic)
>
> BR
> Hossein
>
>
> On Wednesday, October 26, 2022 at 06:37:33 AM PDT, Carsten Bock <
> carsten at ng-voice.com> wrote:
>
>
> Hi Hossein,
>
> yes, you are right, it is in-efficient. It may be fine for a private
> network/PoC/Lab/ or anything else small, but it will not really work for a
> commercial network - for that you need something different.
>
> Thanks,
> Carsten
> --
> Carsten Bock I CTO & Founder
>
> ng-voice GmbH
>
> Trostbrücke 1 I 20457 Hamburg I Germany
> T +49 179 2021244 I www.ng-voice.com
>
> Registry Office at Local Court Hamburg, HRB 120189
> Managing Directors: Dr. David Bachmann, Carsten Bock
>
>
> Am Di., 25. Okt. 2022 um 23:03 Uhr schrieb H Yavari <
> hyavari at rocketmail.com>:
>
> Thanks Alex for your elaboration; you are right.
> This is the reason that the current ims_ipsec module will create a bunch
> of listeners at startup that looks not efficient.
>
>
> Regards,
> Hossein
>
>
> On Tuesday, October 25, 2022 at 01:28:38 PM PDT, Alex Balashov <
> abalashov at evaristesys.com> wrote:
>
>
> Well, no, it just stems from some knowledge of Kamailio’s multiprocess
> architecture.
>
> Kamailio uses a static pool of preforked SIP worker processes, and this is
> initialised once upon startup. These child processes are spawned for every
> listener, and communicate and share data using SysV IPC and shared memory.
> The shared memory pool is likewise initialised upon startup, as is the
> small fixed-size area of private memory associated with each other worker
> process (“package memory”).
>
> While perhaps not strictly impossible to alter, this setup isn’t
> particularly amenable to the dynamic creation and destruction of listeners,
> or the additional child processes they beget. The child processes need to
> be forked on startup, before their heap is laden with runtime baggage. All
> this is relatively expensive to initialise.
>
> — Alex
>
> > On Oct 25, 2022, at 4:14 PM, H Yavari <hyavari at rocketmail.com> wrote:
> >
> > Thanks Alex.
> > Is there any document or material that tells more about those reasons?
> >
> >
> > Regards,
> > Hossein
> >
> >
> > On Tuesday, October 25, 2022 at 01:00:18 PM PDT, Alex Balashov <
> abalashov at evaristesys.com> wrote:
> >
> >
> > Hi,
> >
> > Unfortunately, for a variety of architectural reasons, this is not
> practical.
> >
> > — Alex
> >
> > > On Oct 25, 2022, at 12:43 PM, H Yavari <hyavari at rocketmail.com> wrote:
> > >
> > > Hi Kamailio community,
> > >
> > >
> > > I am running an IPsec server beside Kamailio, so I am interested to
> know if there is any method to create a SIP listener on a specific port on
> the fly. I mean, when I create the IPsec SAs through the IPsec server, I
> ask Kamailio to create a listener/handler for that port too.
> > > This case might be very rare, but it is always good to hear community
> ideas.
> > >
> > > Thank you.
> > >
> > > Regards,
> > > Hossein
> >
> > > __________________________________________________________
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> > --
> > Alex Balashov | Principal | Evariste Systems LLC
> >
> > Tel: +1-706-510-6800 / +1-800-250-5920 (toll-free)
> > Web: http://www.evaristesys.com/, http://www.csrpswitch.com/
> >
> >
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> >
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> --
> Alex Balashov | Principal | Evariste Systems LLC
>
> Tel: +1-706-510-6800 / +1-800-250-5920 (toll-free)
> Web: http://www.evaristesys.com/, http://www.csrpswitch.com/
>
>
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