30 Jan
2014
30 Jan
'14
6:28 a.m.
On Thursday 30 January 2014 06:41:06 Owais ul Haq wrote:
I am trying to understand kamailio.cfg parameters. Can
some one please help
me in understanding what these parameters do exactly when set.
tcp_keepalive, tcp_keepidle and tcp_connection_lifetime. I have a general
understanding of tcp. Want to know exact role of these parameters in
kamailio.cfg. Thanking in advance.
According to
http://www.kamailio.org/wiki/cookbooks/3.2.x/core#tcp_keepalive
these options manipulates the socket options as decribed in "man 7 tcp"
So:
tcp_keepalive
Enables keepalive for tcp (sets SO_KEEPALIVE socket option)
tcp_keepalive = yes | no (default yes)
enables:
tcp_keepalive_time (integer; default: 7200; since Linux 2.2)
The number of seconds a connection needs to be idle before TCP
begins sending out keep-alive probes. Keep-alives are only sent
when the SO_KEEPALIVE socket option is enabled. The default
value is 7200 seconds (2 hours). An idle connection is termi‐
nated after approximately an additional 11 minutes (9 probes an
interval of 75 seconds apart) when keep-alive is enabled.
Note that underlying connection tracking mechanisms and applica‐
tion timeouts may be much shorter.
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