Hi all,
I found two bugs with [cseq] keyword in sipp.
1) First I have following scenario
sipp ------------------ SIP Server
INVITE -------------> cseq 1 INVITE - ok !
<------------ 100
<------------ 180
PRACK ---------------> cseq 2 PRACK ok !
<------------- 200 OK PRACK
<-------------- 200 OK INVITE
ACK ----------------> cseq 2 ACk - wrong shall be 1 ACK !!!!!!!!!!!!!!!!!
If there is no PRACK transaction inside INVITE transaction [cseq] works fine.
2) [cseq] updates also its sequence number according to incoming request. This
can lead to wrong cseq number in next outgoing request.
Example :
I start
INVITE -------------> cseq 1 INVITE - ok !
<------------ 100
<------------ 180
<-------------- 200 OK INVITE
ACK ----------------> cseq 1 ACK - ok
now we send re INVITE
INVITE -------------> cseq 2 INVITE - ok !
<------------ 100
<------------ 180
<-------------- 200 OK INVITE
ACK ----------------> cseq 2 ACK - ok
now we receive reINVITE with cseq 1 - it is ok because according to SIP
standard each UA involved in dialog keeps its own cseq sequence
We complete the transaction and send our own reINVITE
INVITE -------------> cseq 2 INVITE - wrong ! - must be 3
Because I am using official Windows version from sipp Web site, my question is,
whether is already available any fix for that in SVN or if a bug can be created
for this issue.
Regards
Mitko Mitev
IT Services and Enterprise Communications
iSEC CZ 34-3 Team Lead
Bidláky 20, budova Mediahall
639 00 Brno
Tel.: +420 533 337 251
Fax: +420 533 337 252
Mobil: +420 724 754 090
mailto: [email protected] <mailto:[email protected]>
www.isec-it.com <http://www.isec-it.com/>
Spoleènost: iSEC - IT Services and Enterprise Communications s.r.o.
Sídlo: Brno, Bidláky 20, 639 00
Obchodní firma je zapsána v obchodním rejstøíku u Krajského soudu v Brnì v
oddílu C, ve složce 54602.
IÈ: 27721710
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