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

[Pascal Maugeri]

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. ?

Cheers
Pascal



2010/5/7 Henning Westerholt <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
>
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