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)
BRHossein

    On Wednesday, October 26, 2022 at 06:37:33 AM PDT, Carsten Bock 
<cars...@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 <hyav...@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 
<abalas...@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 <hyav...@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 
> <abalas...@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 <hyav...@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)
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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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