[sr-dev] SIP ping, sockets and multi homed

[Daniel-Constantin Mierla]

Hello,

what are the sockets kamailio is listening on? See `kamcmd help` for the
command that lists the sockets.

Also, what is the log messages before the first one you pasted, there
should be another one printed from get_out_socket().

It is always important to provide kamailio version (kamailio -v) and the
operating system you are using.

Cheers,
Daniel

On 14.08.17 14:41, Patrick Wakano wrote:
> Hello Kamailio list,
>
> Hope you all doing well!
>
> I am stuck with one problem that should be incredibly easy to be done,
> but apparently it is not.... I want my dispatcher, LCR and nathelper
> modules to always SIP ping my SIP clients. I have a Kamailio based SBC
> that is separating two networks, and so I am using the 'mhomed' flag,
> but none of these SIP pings are working.... for now I will only ask
> about the dispatcher....
> My dispatcher module has to talk with SIP servers in both networks,
> the thing is when I enable SIP ping for it (modparam("dispatcher",
> "ds_probing_mode", 1)), it gives me this type of error:
> /usr/sbin/kamailio[6164]: ERROR: <core> [core/forward.c:181]:
> get_out_socket(): no socket found
> /usr/sbin/kamailio[6164]: ERROR: <core> [core/forward.c:183]:
> get_out_socket(): no corresponding socket found
> for(udp:192.168.33.110:6060 <http://192.168.33.110:6060>)
> /usr/sbin/kamailio[6164]: ERROR: tm [ut.h:317]: uri2dst2(): no
> corresponding socket found for "192.168.33.110" af 2
> (udp:192.168.33.110:6060 <http://192.168.33.110:6060>)
> /usr/sbin/kamailio[6164]: ERROR: tm [uac.c:443]: t_uac_prepare(): no
> socket found
> /usr/sbin/kamailio[6164]: ERROR: dispatcher [dispatch.c:2652]:
> ds_ping_set(): unable to ping [sip:192.168.33.110:6060
> <http://192.168.33.110:6060>]
>
> After research it seems I need to manually set a "socket" attribute
> for each of my GWs in dispatcher list. After putting the socket
> parameter for the GW, I got another error:
> /usr/sbin/kamailio[14190]: ERROR: <core> [core/socket_info.c:2046]:
> parse_protohostport(): bad port number in udp:192.168.33.100:5060
> <http://192.168.33.100:5060>
> /usr/sbin/kamailio[14190]: ERROR: <core> [core/forward.c:181]:
> get_out_socket(): no socket found
> /usr/sbin/kamailio[14190]: ERROR: <core> [core/forward.c:183]:
> get_out_socket(): no corresponding socket found
> for(udp:192.168.33.110:6060 <http://192.168.33.110:6060>)
> /usr/sbin/kamailio[14190]: ERROR: tm [ut.h:317]: uri2dst2(): no
> corresponding socket found for "192.168.33.110" af 2
> (udp:192.168.33.110:6060 <http://192.168.33.110:6060>)
> /usr/sbin/kamailio[14190]: ERROR: tm [uac.c:443]: t_uac_prepare(): no
> socket found
> /usr/sbin/kamailio[14190]: ERROR: dispatcher [dispatch.c:2652]:
> ds_ping_set(): unable to ping [sip:192.168.33.110:6060
> <http://192.168.33.110:6060>]
>
> What can be wrong in my port info in the socket config? (I tried the
> socket with and without quotes but had no luck...)
> select * from dispatcher where id=2;
>  id | setid |       destination       | flags | priority
> |                    attrs                    |     description    
> ----+-------+-------------------------+-------+----------+---------------------------------------------+---------------------
>   2 |     2 | sip:192.168.33.110:6060 <http://192.168.33.110:6060>
> |     0 |        0 | socket="udp:192.168.33.100:5060
> <http://192.168.33.100:5060>";rweight=50 |
> (1 row)
>
> Anyhow, I was expecting the 'mhomed' parameter to do the socket
> selection for me. Regular call routing either by the dispatcher or by
> LCR, also seems to require me to explicitly set the socket otherwise
> Kamailio (or the OS) may end up using the wrong socket. So, another
> question is why 'mhomed' does not dictate the whole socket selection
> Kamailio has to do regardless the module it is using to send SIP requests?
>
> Sorry for the long e-mail....
> Best regards,
> Patrick Wakano
>
>
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-- 
Daniel-Constantin Mierla
www.twitter.com/miconda -- www.linkedin.com/in/miconda
Kamailio Advanced Training - www.asipto.com
Kamailio World Conference - www.kamailioworld.com

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