[SR-Users] sipp and stateful transaction problem

[Daniel-Constantin Mierla]

Hello,

On 5/21/10 10:47 PM, JR Richardson wrote:
> Hi All,
>
> I'm doing some testing with kamailio 1.5:
>
> kamailio1:/etc/kamailio# kamailio -V
> version: kamailio 1.5.4-notls (i386/linux)
> flags: STATISTICS, USE_IPV6, USE_TCP, DISABLE_NAGLE, USE_MCAST,
> SHM_MMAP, PKG_MALLOC, F_MALLOC, FAST_LOCK-ADAPTIVE_WAIT
> ADAPTIVE_WAIT_LOOPS=1024, MAX_RECV_BUFFER_SIZE 262144, MAX_LISTEN 16,
> MAX_URI_SIZE 1024, BUF_SIZE 65535, PKG_SIZE 4194304
> poll method support: poll, epoll_lt, epoll_et, sigio_rt, select.
> svnrevision: 2:6005M
> @(#) $Id: main.c 5608 2009-02-13 16:48:17Z henningw $
> main.c compiled on 10:14:11 May 18 2010 with gcc 4.3.2
>
> Using dispatcher module trying to load balance SIP calls across some
> Asterisk servers.  I have it working fine when I test in this
> scenario:
>
> sip phone dial out><asterisk><kamailio><round robin to several asterisk servers
>
> This works stateful and stateless, handles everything gracefully.
>
> This scenario is giving me fits:
>
> sipp dial out><kamailio><round robin to several asterisk servers
>
> I get retransmits on every call back to sipp with errors like
> "Discarding message which can't be mapped to a known SIPp call" and
> "SIP/2.0 481 Call leg/transaction does not exist"
>
> This happens with kamailio setup stateful or stateless.  I'm wondering
> if sipp is the problem or just doesn't play well with kamailio?
>
> I've kept the config as simple as possible for testing, it is listed
> here http://pastebin.com/BZ8hJvJv
>
> Here is my sipp usage:
>
> sipp -sn uac 10.10.12.53 -i 10.10.14.97 -s 55 -d 7000 -l 10 -r 1 -trace_err
>
> Any insight would be appriciated.
>
>    
the problem is in your sipp scenario. The uac calls do not map to uas. 
kamailio does not reply 481,  check the uas scenario, that is the one 
that sends back the 481.

Cheers,
Daniel

-- 
Daniel-Constantin Mierla
Kamailio (OpenSER) Advanced Training
Miami, Fl, USA - June 21-23, 2010
http://www.asipto.com/index.php/kamailio-advanced-training/