[OpenSIPS-Users] Strange retrasmission of bye messages

[mmarzuola at interfree.it]

Hi all. 
Sniffing the traffic I realized that sometimes the signaling of BYE transaction contains replicated messages BYE.
This is an example:

#
U 10.10.45.78:5060 -> 10.10.45.158:5060
BYE sip:1000 at 10.10.45.102:5060 SIP/2.0.
Via: SIP/2.0/UDP 10.10.45.78:5060;rport;branch=z9hG4bK08DFC9CC7C9059DAE6CC8D4AE1FD5BB0.
From: <sip:1003 at mysip.com>;tag=597156156.
To: "Sjphone laptop_User" <sip:1000 at mysip.com>;tag=31316689311285800150.
Contact: <sip:1003 at 10.10.45.78:5060>.
Route: <sip:10.10.45.158;lr=on;ftag=31316689311285800150>.
Call-ID: 8FA5A2BA-1DD2-11B2-8843-DF179CCF6174 at 10.10.45.102.
CSeq: 25008 BYE.
Max-Forwards: 70.
User-Agent: X-Lite release 1105d.
Content-Length: 0.
.

#
U 10.10.45.158:5060 -> 10.10.45.102:5060
BYE sip:1000 at 10.10.45.102:5060 SIP/2.0.
Via: SIP/2.0/UDP 10.10.45.158;branch=z9hG4bKc2e9.5af153d5.0.
Via: SIP/2.0/UDP 10.10.45.78:5060;received=10.10.45.78;rport=5060;branch=z9hG4bK08DFC9CC7C9059DAE6CC8D4AE1FD5BB0.
From: <sip:1003 at mysip.com>;tag=597156156.
To: "Sjphone laptop_User" <sip:1000 at mysip.com>;tag=31316689311285800150.
Contact: <sip:1003 at 10.10.45.78:5060>.
Call-ID: 8FA5A2BA-1DD2-11B2-8843-DF179CCF6174 at 10.10.45.102.
CSeq: 25008 BYE.
Max-Forwards: 69.
User-Agent: X-Lite release 1105d.
Content-Length: 0.
.

#
U 10.10.45.102:5060 -> 10.10.45.158:5060
SIP/2.0 200 OK.
Via: SIP/2.0/UDP 10.10.45.158;branch=z9hG4bKc2e9.5af153d5.0,SIP/2.0/UDP 10.10.45.78:5060;rport=5060;received=10.10.45.78;branch=z9hG4bK08DFC9CC7C9059DAE6CC8D4AE1FD5BB0.
Content-Length: 0.
Call-ID: 8FA5A2BA-1DD2-11B2-8843-DF179CCF6174 at 10.10.45.102.
CSeq: 25008 BYE.
From: <sip:1003 at mysip.com>;tag=597156156.
Server: SJphone/1.60.299a/L (SJ Labs).
To: "Sjphone laptop_User"<sip:1000 at mysip.com>;tag=31316689311285800150.
.

#
U 10.10.45.158:5060 -> 10.10.45.78:5060
SIP/2.0 200 OK.
Via: SIP/2.0/UDP 10.10.45.78:5060;rport=5060;received=10.10.45.78;branch=z9hG4bK08DFC9CC7C9059DAE6CC8D4AE1FD5BB0.
Content-Length: 0.
Call-ID: 8FA5A2BA-1DD2-11B2-8843-DF179CCF6174 at 10.10.45.102.
CSeq: 25008 BYE.
From: <sip:1003 at mysip.com>;tag=597156156.
Server: SJphone/1.60.299a/L (SJ Labs).
To: "Sjphone laptop_User"<sip:1000 at mysip.com>;tag=31316689311285800150.
.

#
U 10.10.45.158:5060 -> 10.10.45.102:5060
BYE sip:1000 at 10.10.45.102:5060 SIP/2.0.
Via: SIP/2.0/UDP 10.10.45.158;branch=z9hG4bKc2e9.5af153d5.0.
Via: SIP/2.0/UDP 10.10.45.78:5060;received=10.10.45.78;rport=5060;branch=z9hG4bK08DFC9CC7C9059DAE6CC8D4AE1FD5BB0.
From: <sip:1003 at mysip.com>;tag=597156156.
To: "Sjphone laptop_User" <sip:1000 at mysip.com>;tag=31316689311285800150.
Contact: <sip:1003 at 10.10.45.78:5060>.
Call-ID: 8FA5A2BA-1DD2-11B2-8843-DF179CCF6174 at 10.10.45.102.
CSeq: 25008 BYE.
Max-Forwards: 69.
User-Agent: X-Lite release 1105d.
Content-Length: 0.
.

#
U 10.10.45.102:5060 -> 10.10.45.158:5060
SIP/2.0 200 OK.
Via: SIP/2.0/UDP 10.10.45.158;branch=z9hG4bKc2e9.5af153d5.0,SIP/2.0/UDP 10.10.45.78:5060;rport=5060;received=10.10.45.78;branch=z9hG4bK08DFC9CC7C9059DAE6CC8D4AE1FD5BB0.
Content-Length: 0.
Call-ID: 8FA5A2BA-1DD2-11B2-8843-DF179CCF6174 at 10.10.45.102.
CSeq: 25008 BYE.
From: <sip:1003 at mysip.com>;tag=597156156.
Server: SJphone/1.60.299a/L (SJ Labs).
To: "Sjphone laptop_User"<sip:1000 at mysip.com>;tag=31316689311285800150.
.

I can not understand why the proxy decides to send a new bye to the UAC despite the transaction appears to be over.

In my system runs opensips 1.5 and mediaproxy 2.3.1.
Any idea?


Thanks in advance

Marzuola Matteo


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