Hi
I am using IMS bench SIPp. My SUT is close to a usual B2BUA.
I've taken the config generated by ims_bench.pl and did the following changes:
- removed registration phase (my SUT doesn't support registration)
- removed all registration and messaging scenarios, leaving only uac and uas
- removed route from UAC/UAS scenarios (it was taken from REGISTER response,
so I don't have it and I don't need it for my simple system)
- in the users_inf file, changed initial pool from 0 to 2 for all users (to
consider them "registered" without runnign the registration scenario).
When the UAC sipp sends INVITE, it goes through my SUT and the SUT sends it to
the UAS. However, the UAS doesn't see the INVITE (but it sees recvRMT -
screen dump below).
I've seen on Wireshark that the INVITEs are really sent to the UAS sipp
address/port. What can be the cause of ignoring them? Could it be related to
the user reservation mechanism? The "From" header after going though my SUT
is the same as original "From", except the tag. Can the tag be problem?
SIPp screen dump
Messages Retrans Timeout Unexpected-Msg
0 [ RECVRMT ] 46
1 [ SENDRMT ] 46
2 ----------> INVITE B5,2 0 0 0
3 <---------- 180 0 0
4 [Poi(5000ms)] Pause 0 0
...
Original INVITE (SDP truncated):
INVITE sip:[EMAIL PROTECTED] SIP/2.0
Via: SIP/2.0/UDP 172.17.38.205:24272;branch=z9hG4bK-1302-371-4
Max-Forwards: 70
From: "subs017272" <sip:[EMAIL PROTECTED]>;tag=1302SIPpTag00371
To: "subs011163" <sip:[EMAIL PROTECTED]>
Call-ID: [EMAIL PROTECTED]
CSeq: 1 INVITE
Contact: sip:[EMAIL PROTECTED]:24272
Content-Type: application/sdp
Content-Length: 137
v=0
...
Invite forwarded by SUT:
INVITE sip:[EMAIL PROTECTED] SIP/2.0
Via: SIP/2.0/UDP 172.17.38.128:5062;branch=z9hG4bKMvorkJ10-N4QWLfYWkbuoA;rport
Max-Forwards: 70
From: "subs017272" <sip:[EMAIL PROTECTED]>;tag=UPRp9A
To: "subs011163" <sip:[EMAIL PROTECTED]>
Call-ID: L_Zba1vGrsqGV9RkZbjiEg
CSeq: 1 INVITE
Contact: <sip:172.17.38.128:5062;transport=udp>
Content-Type: application/sdp
Content-Length: 137
X-Original-CallID: [EMAIL PROTECTED]
v=0
...
Best regards
--
Tomasz Radziszewski
Senior Software Engineer
Ericpol Telecom sp. z o.o.
http://www.ericpol.pl/
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