[SR-Users] tcp hangup

[Andrei Pelinescu-Onciul]

On Jan 05, 2011 at 15:03, Juha Heinanen <jh at tutpro.com> wrote:
> Andrei Pelinescu-Onciul writes:
> 
> > It looks like somehow the 3.0 does not receive the FIN (local firewall
> > rules?).
> 
> andrei,
> 
> i'm not aware of any such firewall rules.  it is possible to establish
> telnet session to sip port of the other host from both ends.  i see from
> wireshark dump that sr 3.0 host tried to tcp-resend the invite, but does
> not get anything back.  in the second case, both hosts reported that the
> connection was established.
> 
> is it possible to make sr send crlfcrlf keepalive to the tcp connection?

No, you can enable responding to them, but not sending them
(tcp_crlf_ping = yes).

However you could enable tcp level keepalives and on linux you can tune
the intervals, e.g.:

tcp_keepalive = yes
tcp_keepidle = 60
tcp_keepintvl = 10
tcp_keepcnt = 3


Andrei