SDP in ACK lost in OpenSIPS 1.11.5
This is something that used to work in OpenSIPS 1.8.1, but seems to have been
broken 1.11.5.
Using the B2BUA facilities, I make the second leg of the call using
b2b_init_request. Then, if required, I move the call to another user agent via
a bash shell script, which issues a opensipsctl fifo b2b_bridge.
For this in-dialog reinvite to work, there has to be an SDP in the ACK, which
is missing the trace produced using OpenSIPS 1.11.5. It's there in 1.8.1.
Anyway of reintroducing the SDP in the ACK in 1.11.5?
Trace Explanation
-----------------
Objects: 10.10.8.103: source of initial call. Recipipient of reinvite.
10.10.10.205: CentOS running OpenSIPS with B2BUA. In one case, it's
CentOS 5.11 running OpenSIPs 1.8.1, the other (broken) is CentOS 6.7 running
OpenSIPs 1.11.5.
Call Flow in Trace:
10.10.10.205 10.10.8.103
--Invite--> Indialog reinvite, so SDP
<--Trying--
<--200 OK-- With SDP
--ACK --> With SDP in 1.8.1, no SDP in 1.11.5
OpenSIPS 1.8.1:
---------------
INVITE sip:[email protected];user=phone SIP/2.0
Via: SIP/2.0/UDP 10.10.10.205;branch=z9hG4bK109d.ce759b97.0
To: "4507710011"
<sip:[email protected];user=phone>;tag=89188638-a664e63f-ver5d
From: <sip:[email protected];user=phone>;tag=B2B.483.37
CSeq: 2 INVITE
Call-ID: [email protected]
Max-Forwards: 70
Content-Length: 0
User-Agent: OpenSIPS (1.8.1-notls (x86_64/linux))
Contact: <sip:10.10.10.205:5060;transport=tcp>
SIP/2.0 100 Trying
Via: SIP/2.0/UDP 10.10.10.205;branch=z9hG4bK109d.ce759b97.0
From: <sip:[email protected];user=phone>;tag=B2B.483.37
To: "4507710011"
<sip:[email protected];user=phone>;tag=89188638-a664e63f-ver5d
Call-ID: [email protected]
CSeq: 2 INVITE
Content-Length: 0
SIP/2.0 200 OK
Via: SIP/2.0/UDP 10.10.10.205;branch=z9hG4bK109d.ce759b97.0
From: <sip:[email protected];user=phone>;tag=B2B.483.37
To: "4507710011"
<sip:[email protected];user=phone>;tag=89188638-a664e63f-ver5d
Call-ID: [email protected]
CSeq: 2 INVITE
Contact: <sip:[email protected]:5060>
Content-Type: application/sdp
Content-Length: 185
v=0
o=VOIPSIL_SIP 416521046 416521046 IN IP4 10.10.8.103
s=Sip Call
c=IN IP4 10.10.8.33
t=0 0
m=audio 21260 RTP/AVP 0 101
a=rtpmap:0 PCMU/8000
a=rtpmap:101 telephone-event/8000
ACK sip:[email protected];user=phone SIP/2.0
Via: SIP/2.0/UDP 10.10.10.205;branch=z9hG4bK109d.de759b97.0
To: "4507710011"
<sip:[email protected];user=phone>;tag=89188638-a664e63f-ver5d
From: <sip:[email protected];user=phone>;tag=B2B.483.37
CSeq: 2 ACK
Call-ID: [email protected]
Max-Forwards: 70
Content-Length: 186
User-Agent: OpenSIPS (1.8.1-notls (x86_64/linux))
Allow: INVITE, ACK, CANCEL, BYE
Priority: emergency
Calluid: 1537A73F8B0C0000005C
Geolocation: <cid:4507710011@Sierra>
Geolocation-Routing: yes
Initial-CallID: [email protected]
Contact: <sip:10.10.10.205:5060;transport=tcp>
Content-Type: application/sdp
v=0
o=VOIPSIL_SIP 322321996 322321996 IN IP4 10.10.10.203
s=Sip Call
c=IN IP4 10.10.10.7
t=0 0
m=audio 21336 RTP/AVP 0 101
a=rtpmap:0 PCMU/8000
a=rtpmap:101 telephone-event/8000
BYE sip:[email protected];user=phone SIP/2.0
Via: SIP/2.0/UDP 10.10.10.205;branch=z9hG4bK4037.cd227b95.0
To: "4507710011"
<sip:[email protected];user=phone>;tag=89188638-3ac4d92f-ver59
From: <sip:[email protected];user=phone>;tag=B2B.87.164
CSeq: 3 BYE
Call-ID: [email protected]
Max-Forwards: 70
Content-Length: 0
User-Agent: OpenSIPS (1.8.1-notls (x86_64/linux))
Contact: <sip:10.10.10.205:5060;transport=tcp>
OpenSIPS 1.11.5:
----------------
NVITE sip:[email protected];user=phone SIP/2.0
Via: SIP/2.0/TCP 10.10.10.205:5060;branch=z9hG4bK97f1.3d149882.0
To: "4507710011"
<sip:[email protected];user=phone>;tag=89188638-1dace611-ver5b
From: <sip:[email protected];user=phone>;tag=B2B.11.465
CSeq: 2 INVITE
Call-ID: [email protected]
Max-Forwards: 70
Content-Length: 0
User-Agent: OpenSIPS (1.11.5-notls (x86_64/linux))
Contact: <sip:10.10.10.205:5060>
SIP/2.0 100 Trying
Via: SIP/2.0/TCP 10.10.10.205:5060;branch=z9hG4bK97f1.3d149882.0
From: <sip:[email protected];user=phone>;tag=B2B.11.465
To: "4507710011"
<sip:[email protected];user=phone>;tag=89188638-1dace611-ver5b
Call-ID: [email protected]
CSeq: 2 INVITE
Content-Length: 0
SIP/2.0 200 OK
Via: SIP/2.0/TCP 10.10.10.205:5060;branch=z9hG4bK97f1.3d149882.0
From: <sip:[email protected];user=phone>;tag=B2B.11.465
To: "4507710011"
<sip:[email protected];user=phone>;tag=89188638-1dace611-ver5b
Call-ID: [email protected]
CSeq: 2 INVITE
Contact: <sip:[email protected]:5060>
Content-Type: application/sdp
Content-Length: 185
v=0
o=VOIPSIL_SIP 415919281 415919281 IN IP4 10.10.8.103
s=Sip Call
c=IN IP4 10.10.8.33
t=0 0
m=audio 21260 RTP/AVP 0 101
a=rtpmap:0 PCMU/8000
a=rtpmap:101 telephone-event/8000
ACK sip:[email protected];user=phone SIP/2.0
Via: SIP/2.0/TCP 10.10.10.205:5060;branch=z9hG4bK97f1.4d149882.0
To: "4507710011"
<sip:[email protected];user=phone>;tag=89188638-1dace611-ver5b
From: <sip:[email protected];user=phone>;tag=B2B.11.465
CSeq: 2 ACK
Call-ID: [email protected]
Max-Forwards: 70
Content-Length: 0
User-Agent: OpenSIPS (1.11.5-notls (x86_64/linux))
Allow: INVITE, ACK, CANCEL, BYE
Priority: emergency
Calluid: 1537A68E4C0C0000005A
Geolocation: <cid:4507710011@Sierra>
Geolocation-Routing: yes
Initial-CallID: [email protected]
Contact: <sip:10.10.10.205:5060>
Content-Type: application/sdp
Louis Rochon
Senior Systems Designer
Solacom Technologies
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