[SR-Users] Kamailio ims with TCP

[Daniel-Constantin Mierla]

Hello,

using UDP for forwarding is a configuration file action. Kamailio
doesn't do any sip message forwarding unless there is such action in
configuration file. If you want to use only tcp for sending out, be sure
that request uri ($ru) or destination uri ($du) are SIP addresses with
TCP transport.

Cheers,
Daniel


On 26.02.18 21:22, Amar Tinawi wrote:
> Hello Daniel 
>
> Thanks for your help, actually that is my question from the beginning,
> is it mandatory to have sockets for UDP ?
> Can I enable only TCP protocol between instances ?
>
>
> On Mon, Feb 26, 2018 at 9:26 AM, Daniel-Constantin Mierla
> <miconda at gmail.com <mailto:miconda at gmail.com>> wrote:
>
>     Actually the error is because you try to forward via UDP (proto
>     1). Be sure you have listen parameter for UDP and TCP sockets.
>
>     Cheers,
>     Daniel
>
>
>     On 25.02.18 11:38, Amar Tinawi wrote:
>>     TCP alone errors were strange : on the proxy node i couldn't
>>     register and got the following errors : 
>>     Feb 25 12:15:28 server1 [Proxy-CSCF][31641]: ERROR: tm
>>     [ut.h:303]: uri2dst2(): no corresponding socket for
>>     "NET.SYRIATEL" af 2
>>     Feb 25 12:15:28 server1 [Proxy-CSCF][31641]: ERROR: tm
>>     [t_fwd.c:469]: prepare_new_uac(): can't fwd to af 2, proto 1  (no
>>     corresponding listening socket)
>>     Feb 25 12:15:28 server1 [Proxy-CSCF][31641]: ERROR: tm
>>     [t_fwd.c:1735]: t_forward_nonack(): failure to add branches
>>     Feb 25 12:15:28 server1 [Proxy-CSCF][31641]: ERROR: siptrace
>>     [siptrace.c:1930]: trace_send_hep2_duplicate(): can't forward to
>>     af 2, proto 1 no corresponding listening socket
>>     Feb 25 12:15:28 server1 [Proxy-CSCF][31641]: ERROR: sl
>>     [sl_funcs.c:362]: sl_reply_error(): stateless error reply used:
>>     I'm terribly sorry, server error occurred (7/SL)
>>     =====================================================================================
>>
>>     These errors appearing when using two TCP and UDP, i could be
>>     able to register and make calls but still get errors
>>     Feb 25 11:37:15 server1 [Proxy-CSCF][28999]: ERROR:
>>     ims_usrloc_pcscf [udomain.c:409]: update_pcontact(): Error
>>     updating record in DB
>>     Feb 25 11:37:15 server1 [Proxy-CSCF][28999]: ERROR:
>>     ims_registrar_pcscf [notify.c:218]: process_contact(): failed to
>>     update pcscf contact
>>     Feb 25 11:37:15 server1 [Proxy-CSCF][28999]: ERROR: tm
>>     [tm.c:1242]: w_t_reply(): cannot send a t_reply to a message for
>>     which no T-state has been established
>>
>>     In addition i cleaned all UDP SRV related records from DNS zone
>>     and tried to forced all instances in the TCP mode configuration
>>
>>     **Also, in the TCP mode all the  ip addresses that the
>>     registrations comes from are not the real ip's of the users, and
>>     also this is very strange
>>     i got some random  IP's
>>
>>     On Fri, Feb 23, 2018 at 10:41 AM, Daniel-Constantin Mierla
>>     <miconda at gmail.com <mailto:miconda at gmail.com>> wrote:
>>
>>         Hello,
>>
>>         have you look at syslog messages? Are there any errors?
>>         Between Kamailio instances, tcp for sip should work. Check
>>         also configs to be sure UDP is not enforced there.
>>
>>         Cheers,
>>         Daniel
>>
>>
>>         On 22.02.18 12:40, Amar Tinawi wrote:
>>>         Hello list 
>>>
>>>         For some reason i couldn't register on kamailio ims when i
>>>         use only TCP protocols between nodes, the error was solved
>>>         when i enabled UDP between I-CSCF and S-CSCF
>>>
>>>
>>>         is it mandatory for those two nodes to talk over UDP only ?
>>>         or i'm missing something ? 
>>>         and in general for sip protocol which is better ? UDP or TCP ?
>>>
>>>
>>>         Regards,
>>>
>>>
>>>         _______________________________________________
>>>         Kamailio (SER) - Users Mailing List
>>>         sr-users at lists.kamailio.org <mailto:sr-users at lists.kamailio.org>
>>>         https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
>>>         <https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users>
>>
>>         -- 
>>         Daniel-Constantin Mierla
>>         www.twitter.com/miconda <http://www.twitter.com/miconda> -- www.linkedin.com/in/miconda <http://www.linkedin.com/in/miconda>
>>         Kamailio Advanced Training - March 5-7, 2018, Berlin - www.asipto.com <http://www.asipto.com>
>>         Kamailio World Conference - May 14-16, 2018 - www.kamailioworld.com <http://www.kamailioworld.com>
>>
>>
>
>     -- 
>     Daniel-Constantin Mierla
>     www.twitter.com/miconda <http://www.twitter.com/miconda> -- www.linkedin.com/in/miconda <http://www.linkedin.com/in/miconda>
>     Kamailio Advanced Training - March 5-7, 2018, Berlin - www.asipto.com <http://www.asipto.com>
>     Kamailio World Conference - May 14-16, 2018 - www.kamailioworld.com <http://www.kamailioworld.com>
>
>

-- 
Daniel-Constantin Mierla
www.twitter.com/miconda -- www.linkedin.com/in/miconda
Kamailio Advanced Training - March 5-7, 2018, Berlin - www.asipto.com
Kamailio World Conference - May 14-16, 2018 - www.kamailioworld.com

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