[SR-Users] Configuring TCP keep alive and connection lifetime

[Daniel-Constantin Mierla]

Hello,

On 5/9/10 12:42 PM, Pascal Maugeri wrote:
> Thanks for your Henning, at least I will sleep better knowing I am not 
> completly idiot :-))
>
> I haven't noticed related to INVITE timers (such as the 408) because I 
> only make my client behind NAT to register and re-register and verify 
> it is always reachable in time thanks to this TCP keep-alive. Tomorrow 
> I will try to make a couple a calls to see if I get this 408 you 
> mentionned.
>
> Is there a way (either with a parameter or changing source code) a to 
> control the frequency of TCP k.a. ?
Starting with 3.0, most of tcp parameters are changeable at runtime via 
RPC (you can use sercmd):
http://www.kamailio.org/dokuwiki/doku.php/features:new-in-3.0.x#transport_layer

The initial value can be set via global parameters:
http://www.kamailio.org/dokuwiki/doku.php/core-cookbook:3.0.x#tcp_parameters

Cheers,
Daniel

>
> Cheers
> Pascal
>
>
>
> 2010/5/7 Henning Westerholt <henning.westerholt at 1und1.de 
> <mailto:henning.westerholt at 1und1.de>>
>
>     On Friday 07 May 2010, Pascal Maugeri wrote:
>     > tcp_keepalive=yes
>     > tcp_keepidle=10
>     > tcp_connection_lifetime=3600
>     >
>     >
>     > The TCP connection is kept alive and TCP Keep-Alive packets are
>     sent when
>     > the TCP connection is idle.
>     >
>     > But I don't understand why the time between KA is not linear:
>     > [..]
>     > Could you explain me where do come from these values of 75
>     seconds, 23, 54
>     >  ?
>     >
>     > Everything works well: my client behind NAT is kept connected
>     but I'd like
>     > to understand why it does work :-)
>
>     Hi Pascal,
>
>     sounds indeed interesting. :-) Perhaps a problem with the internal
>     timers.. Do
>     noticed also other timer related problems, like for internal
>     INVITE 408
>     replies or similar?
>
>     Cheers,
>
>     Henning
>
>
>
> _______________________________________________
> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
> sr-users at lists.sip-router.org
> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
>    

-- 
Daniel-Constantin Mierla
* http://www.asipto.com/
* http://twitter.com/miconda
* http://www.linkedin.com/in/danielconstantinmierla

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.sip-router.org/pipermail/sr-users/attachments/20100510/6f6e6e3b/attachment-0003.htm>