[OpenSER-Users] about openSER and SIPp

[bozhang at nec-labs.com]

Hi there,

I'm doing sipp performance measurements with openser 1.2.
I run OpenSER on machine A, then run one SIPp on machine B, one
SIPp on machine C.

For the SIPp on machine C, I start it using UAS mode, ie., ./sipp -sn uas
For the SIPp on machine B, if I start is using the following command:
./sipp -sn uac C -rsa A -m 1 -r 1
Everything is correct. The OpenSER can relay messages correctly.


But if I start SIPp on machine B using the following command:
./sipp -sn uac -rsa A -m 1 -r 1 -d 5000

Then the SIPp client on machine B will crash because of receiving unexpected
"ringing 180" message. Note: the only difference is I add a pause 5 seconds
using "-d 5000" option.

What I found is: the OpenSER server will keep sending "INVITE" to C
during the '5 second pause', so C will keep reponding with "180 Ringing" to
B.

Does anybody know why OpenSER keeps sending "INVITE" to C while B only
issues one "INVITE" request?



BTW, the configuration file for OpenSER is very simple:
#
# $Id: openser.cfg 1676 2007-02-21 13:16:34Z bogdan_iancu $
#
# simple quick-start config script
# Please refer to the Core CookBook at
http://www.openser.org/dokuwiki/doku.php
# for a explanation of possible statements, functions and parameters.
#

# ----------- global configuration parameters ------------------------

debug=3            # debug level (cmd line: -dddddddddd)
fork=yes
log_stderror=no    # (cmd line: -E)
children=32
log_facility=LOG_LOCAL0

disable_tcp=yes
disable_dns_blacklist=yes
disable_dns_failover=yes

# Uncomment these lines to enter debugging mode
#fork=no
#log_stderror=yes
#

listen=udp:192.168.2.102:5060

# ------------------ module loading ----------------------------------

loadmodule "modules/tm/tm.so"

modparam("tm", "wt_timer", 2)

# -------------------------  request routing logic -------------------

# main routing logic

route{
	t_relay();
}



Thanks a lot!

-Bo Zhang