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

Patrick Wakano pwakano at gmail.com
Wed Aug 16 03:02:06 CEST 2017


Hi Daniel!
Very grateful for your attention!

Apologies for lacking important info, check below the version and sockets.
It may be worth mentioning these IPs are virtual ones and I am using
net.ipv4.ip_nonlocal_bind
= 1(in this case the virtual IP is assigned to the box)
Interesting that it has a "mhomed: no" for all sockets but I do have
mhomed=1 in my cfg file.... could that be the issue?
Also there is no message before this one: /usr/sbin/kamailio[6164]: ERROR:
<core> [core/forward.c:181]: get_out_socket(): no socket found
This is the first one that pops when dispatcher tries to ping....

Thanks,
Patrick

kamailio -v
version: kamailio 5.0.2 (x86_64/linux)
flags: STATS: Off, USE_TCP, USE_TLS, USE_SCTP, TLS_HOOKS, DISABLE_NAGLE,
USE_MCAST, DNS_IP_HACK, SHM_MEM, SHM_MMAP, PKG_MALLOC, Q_MALLOC, F_MALLOC,
TLSF_MALLOC, DBG_SR_MEMORY, USE_FUTEX, FAST_LOCK-ADAPTIVE_WAIT,
USE_DNS_CACHE, USE_DNS_FAILOVER, USE_NAPTR, USE_DST_BLACKLIST,
HAVE_RESOLV_RES
ADAPTIVE_WAIT_LOOPS=1024, MAX_RECV_BUFFER_SIZE 262144, MAX_LISTEN 16,
MAX_URI_SIZE 1024, BUF_SIZE 65535, DEFAULT PKG_SIZE 8MB
poll method support: poll, epoll_lt, epoll_et, sigio_rt, select.
id: unknown
compiled on 12:03:49 Jun 26 2017 with gcc 4.8.5

kamcmd> core.sockets_list
{
    socket: {
        proto: udp
        address: 172.28.128.100
        ipaddress: 172.28.128.100
        port: 5060
        mcast: no
        mhomed: no
    }
    socket: {
        proto: udp
        address: 192.168.33.100
        ipaddress: 192.168.33.100
        port: 5060
        mcast: no
        mhomed: no
    }
    socket: {
        proto: tcp
        address: 172.28.128.100
        ipaddress: 172.28.128.100
        port: 5060
        mcast: no
        mhomed: no
    }
    socket: {
        proto: tcp
        address: 192.168.33.100
        ipaddress: 192.168.33.100
        port: 5060
        mcast: no
        mhomed: no
    }
    socket: {
        proto: tcp
        address: 172.28.128.100
        ipaddress: 172.28.128.100
        port: 8080
        mcast: no
        mhomed: no
    }
}


On 15 August 2017 at 17:24, Daniel-Constantin Mierla <miconda at gmail.com>
wrote:

> 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)
> /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)
> /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]
>
> 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
> /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)
> /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)
> /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]
>
> 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 |     0 |        0 | socket="udp:
> 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
>
>
> _______________________________________________
> Kamailio (SER) - Development Mailing Listsr-dev at lists.kamailio.orghttps://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-dev
>
>
> --
> Daniel-Constantin Mierlawww.twitter.com/miconda -- www.linkedin.com/in/miconda
> Kamailio Advanced Training - www.asipto.com
> Kamailio World Conference - www.kamailioworld.com
>
>
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