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,
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:
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@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:
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:
-
Amar Tinawi -
Daniel-Constantin Mierla