8 Apr
2010
8 Apr
'10
12:16 p.m.
Hi All,
I have a similar issue to the following post
http://lists.iptel.org/pipermail/serusers/2009-December/035826.html
I am running against 0.9.6 but I have upgraded to 0.9.9 and I see the
same issue.
I have the SER setup as a stateful proxy, occasionally the SBC due to
load drops CANCEL's. (please find attached a .txt file for call flow out
of wireshark)
The SER doesn't retransmit the CANCEL, but this call has received a
provisional reply (>=100 && < 200). The expectation from the post above
is that this should result in a retransmit of CANCEL.
To remove as much as possible from the test case I have run with, out
the box ser.cfg and sipp scripts I can reproduce this issue on 0.9.6 and
0.9.9, running the same sipp scripts against 3.0.1 kamailio results in
CANCELs being retransmitted.
While the long term goal is to move to a later version of SER I would
prefer not to do this now, can you think of anything that could cause
this unexpected behavior?
Regards
James
192.168.35.225 - Call Agent
192.168.35.216 - SER
192.168.35.25 - Green side SBC
10.5.0.106 - Red side SBC
10.5.0.58 - Red side UA
Conv.| Time | 192.168.35.225 | 192.168.35.216 | 192.168.35.251 | 10.5.0.106
| 10.5.0.58 |
3 |3.726 | INVITE ( g711U...) | |
| |SIP From: sip:anonymous@ftelser07.ftel.co.uk
To:sip:05604000024@ftelser07.ftel.co.uk
| |(5060) ------------------> (5060) | |
| |
3 |3.729 | 100 trying -- your call is ...| |
| |SIP Status
| |(5060) <------------------ (5060) | |
| |
3 |3.730 | | INVITE SDP ( g711U...) |
| |SIP Request
| | |(5060) ------------------> (5060) |
| |
3 |3.732 | | 100 Trying |
| |SIP Status
| | |(5060) <------------------ (5060) |
| |
---------------------------------------------------------------------------------------------------------------------
8 |3.735 | | | |
INVITE SDP ( g711U...) |SIP From: sip:anonymous@ftelser07.ftel.co.uk
To:sip:05604000024@ftelser07.ftel.co.uk
| | | | |(5060)
------------------> (53252) |
8 |3.803 | | | | 100
Trying| |SIP Status
| | | | |(5060)
<------------------ (53252) |
8 |3.844 | | | | 180
Ringing |SIP Status
| | | | |(5060)
<------------------ (53252) |
---------------------------------------------------------------------------------------------------------------------
3 |3.846 | | 180 Ringing |
| |SIP Status
| | |(5060) <------------------ (5060) |
| |
3 |3.846 | 180 Ringing | |
| |SIP Status
| |(5060) <------------------ (5060) | |
| |
3 |6.071 | CANCEL | | |
| |SIP Request
| |(5060) ------------------> (5060) | |
| |
3 |6.079 | | CANCEL | |
| |SIP Request
| | |(5060) ------------------> (5060) |
| |
3 |6.080 | 200 canceling | |
| |SIP Status
| |(5060) <------------------ (5060) | |
| |