[SR-Users] dialog ka_timer and ka_interval problem

[dolphin]

hi  ,

i use  kamailio 3.3.4 version

I  set  and load  dialog  module

modparam("dialog", "ka_timer", 10)
modparam("dialog", "ka_interval", 20)

use  dlg_set_property("ka-src");

When uac A call uac B connection success  , After 20 seconds, sip proxy
send the OPTIONS message uac A

Crazy sent to fill my bandwidth  ,  I use ngrep  tools  see sip server

U xxx.xxx.xxx:5002 -> xxx.xxx.xxx.xxx:16296
OPTIONS sip:xxxxxx at xxx.xxx.xxx.xxx:16296;transport=udp SIP/2.0.
Via: SIP/2.0/UDP xxx.xxx.xxx.xxx:5002;branch=z9hG4bK92da.1584702.0.
To: sip:xxxxxxx at xxx.xxx.xxx.xxx:5002;tag=eb6e8f3e.
From: sip:xxxxxxx at xxx.xxx.xxx.xxx:5002;tag=D.ZHkBjEnKXX.DTO69bc09sbB4oFdU3O.
CSeq: 1 OPTIONS.
Call-ID: NDZlY2JhMjUyMjZiYTllZGJmZTA2MmYxODU5NmY3NGY..
Content-Length: 0.
User-Agent: SIP Server.

and  /var/log/syslog

Mar 19 21:09:07 cfa /home/pkg/kamailio-3.3.4/sbin/kamailio[12237]: ERROR:
tm [t_msgbuilder.c:1528]: build_uac_req(): no shmem (370)
Mar 19 21:09:07 cfa /home/pkg/kamailio-3.3.4/sbin/kamailio[12237]: ERROR:
tm [uac.c:338]: t_uac: Error while building message
Mar 19 21:09:07 cfa /home/pkg/kamailio-3.3.4/sbin/kamailio[12237]: ERROR:
dialog [dlg_req_within.c:381]: failed to send the BYE request
Mar 19 21:09:07 cfa /home/pkg/kamailio-3.3.4/sbin/kamailio[12237]: ERROR:
tm [t_msgbuilder.c:1528]: build_uac_req(): no shmem (370)
Mar 19 21:09:07 cfa /home/pkg/kamailio-3.3.4/sbin/kamailio[12237]: ERROR:
tm [uac.c:338]: t_uac: Error while building message
Mar 19 21:09:07 cfa /home/pkg/kamailio-3.3.4/sbin/kamailio[12237]: ERROR:
dialog [dlg_req_within.c:381]: failed to send the BYE request
Mar 19 21:09:07 cfa /home/pkg/kamailio-3.3.4/sbin/kamailio[12237]: ERROR:
tm [t_msgbuilder.c:1528]: build_uac_req(): no shmem (370)
Mar 19 21:09:07 cfa /home/pkg/kamailio-3.3.4/sbin/kamailio[12237]: ERROR:
tm [uac.c:338]: t_uac: Error while building message

Please help me
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