3 Feb
2012
3 Feb
'12
4:24 p.m.
On 03.02.2012 12:06, Yufei Tao wrote:
Hi
I think I got the tcp_crlf_ping and the tcp_keepalive parameters mixed up.
So for tcp_crlf_ping, Kamailio will only respond.
Yes.
While for
tcp_keepalive parameters, if enabled on both server and client, both
will be sending the keepalives, and the receiver will respond.
I have not tried it yet, but I think it is sufficiemt if only one side
activates the keep-alive (a socket option). But of course only the party
which set the keep-alive option on the socket is capable of detecting
the connection loss.
In order to use tcp_crlf_ping, client's app level
rather than TCP level
would have to send the crlfcrlf (pings) and process the crlf (pongs) in
order to detect if Kamailio is up. Is this right?
Yes.
regards
Klaus
Yufei
On 03/02/12 11:00, sr-users-request(a)lists.sip-router.org wrote:
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Today's Topics:
1. TCP keepalive on server and client (Yufei Tao)
----------------------------------------------------------------------
Message: 1
Date: Fri, 3 Feb 2012 10:33:11 +0000
From: Yufei Tao<yufei.tao(a)redembedded.com>
Subject: [SR-Users] TCP keepalive on server and client
To:<sr-users@lists.sip-router.org>
Message-ID:<4F2BB7E7.2090601@redembedded.com>
Content-Type: text/plain; charset="ISO-8859-1"
Hi
I want to use TCP keepalive to detect dead connections between Kamailio
and my SIP clients. I've got some questions about this:
1. If I enable it on Kamailio by setting for example:
tcp_crlf_ping = yes
tcp_keepalive = yes
tcp_keepidle = 60
tcp_keepintvl = 10
tcp_keepcnt = 3
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Yufei Tao
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_______________________________________________
SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
sr-users(a)lists.sip-router.org
http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users From what I read by gooling, that means Kamailio
only responds to the
crlfcrlf sent by the client, but can't be configured to
send the
crlfcrlf. Is this right?
2. On my client, if I use setsockopt to set the corresponding values:
SO_KEEPALIVE
TCP_KEEPCNT
TCP_KEEPIDLE
TCP_KEEPINTVL
would it make the client send crlfcrlf?
The reason I'm confused is, with these settings, if Kamailio can only
respond to crlfcrlf, but not send, then would the client only respond
too, as in 1. and 2., they seem to configure the same set of parameters?
Please help me clarify this. Thanks very much!
Yufei
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Yufei Tao
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