[SR-Users] ACK and BYE messages uses wrong socket.
Gary Chen
Gary.Chen at lightyear.net
Tue Jul 3 17:44:24 CEST 2012
I already have net.ipv4.ip_nonlocal_bind = 1 in /etc/sysctl.conf
All I talked about is my master server with active floating IP: x.x.130.36
If I removed x.x.130.34 from configuration, my kamailio start fine. Only when I trying to send call the the gateway x.x.129.200, the ACK got error messages like this: [forward.c:220]: ERROR: get_out_socket: no socket found. force_send_socket() on ACK message can fix this problem. Here is my code on this part:
route[WITHINDLG] {
if (has_totag()) {
if (loose_route()) {
if (is_method("BYE")) {
setflag(FLT_ACC); # do accounting ...
setflag(FLT_ACCFAILED); # ... even if the transaction fails
}
force_send_socket(x.x.130.36:5060); # Should not have to use this.
t_on_failure("FAIL_ONE");
route(RELAY);
} else {
if (is_method("SUBSCRIBE") && uri == myself) {
# in-dialog subscribe requests
route(PRESENCE);
exit;
}
if ( is_method("ACK") ) {
if ( t_check_trans() ) {
t_relay();
exit;
} else {
# ACK without matching transaction ... ignore and discard
exit;
}
}
sl_send_reply("404","Check loose_route() failed!");
}
exit;
}
}
From: sr-users-bounces at lists.sip-router.org [mailto:sr-users-bounces at lists.sip-router.org] On Behalf Of Vitaliy Aleksandrov
Sent: Tuesday, July 03, 2012 11:23 AM
To: SIP Router - Kamailio (OpenSER) and SIP Express Router (SER) - Users Mailing List
Subject: Re: [SR-Users] ACK and BYE messages uses wrong socket.
Forgot to mention, i used such a configuration at Kamailio 3.1.5.
As i understood you have got this error on linux-HA slave server ?
For that purpose i used:
echo 1 > /proc/sys/net/ipv4/ip_nonlocal_bind
It's not safe option in general. When ip_nonlocal_bind is enabled linux kernel allows you to call bind() for the interfaces you don't have and you can miss a configuration error.
But i think if you know what you are doing it quite safe.
Yes, I did the same thing as you mentioned and it still doing the same thing. Here is my setup:
mhomed=1
listen=udp:x.x.130.36:5060 # external IP
listen=udp:x.x.130.34:5060 # external IP
listen=udp:10.200.1.31:5060 # internal IP
If I removed .130.34, I got error saying no socket found.
Gary Chen
From: sr-users-bounces at lists.sip-router.org<mailto:sr-users-bounces at lists.sip-router.org> [mailto:sr-users-bounces at lists.sip-router.org] On Behalf Of Vitaliy Aleksandrov
Sent: Tuesday, July 03, 2012 10:27 AM
To: SIP Router - Kamailio (OpenSER) and SIP Express Router (SER) - Users Mailing List
Subject: Re: [SR-Users] ACK and BYE messages uses wrong socket.
Have you specified interfaces with "listen" command ?
I had a problem as you described and have fixed it by moving a listen directive with a "floating ip" to the top of the list.
So you can try to specify interfaces you will use for SIP and set a "virtual ip" at the top of that list.
Kamailio 3.2.0
I am trying to setup kamailio to do the sip trunking. It receive the sip traffic from customer and then send it to carrier.
I have two NIC interface's assigned with three IP's:
Interface 1: ( Public IP's)
x.x.130.34
x.x.130.36 floating IP
interface 2: (private IP's)
10.10.1.31
.36 is a floating IP assigned by Linux-HA (heartbeat/pacemaker).
I only want to use .36 to receive and send sip traffic.
I uses force_send_socket() to send INVITE with .36 IP. But the ACK message always want to use .34 IP even the Route header has .36 in it unless I force it with force_send_socket() .
How can I fix this problem?
See below for the SIP messages: (x.x.128.205 is customer IP, x.x.129.200 is PSTN gateway IP)
U x.x.128.205:51694 -> x.x.130.36:5060
INVITE sip:5033441174 at x.x.130.36:5060<mailto:sip:5033441174 at x.x.130.36:5060> SIP/2.0..Via: SIP/2.0/UDP x.x.128.205:5060;branch=z9hG
4bK1D3CD1..From: <sip:5024427578 at x.x.128.205><mailto:sip:5024427578 at x.x.128.205>;tag=24513088-D59..To: <sip:5033441174 at x.x.130.3<mailto:sip:5033441174 at x.x.130.3>
6>..Date: Tue, 03 Jul 2012 13:37:41 GMT..Call-ID: 1887588D-C44B11E1-BE38D697-98A3E39A at x.x.128.20<mailto:1887588D-C44B11E1-BE38D697-98A3E39A at x.x.128.20>
5..Supported: 100rel,timer,replaces..Min-SE: 1800..Cisco-Guid: 411443261-3293254113-3191264919-256
0877466..User-Agent: Cisco-SIPGateway/IOS-12.x..Allow: INVITE, OPTIONS, BYE, CANCEL, ACK, PRACK, CO
MET, REFER, SUBSCRIBE, NOTIFY, INFO, UPDATE, REGISTER..CSeq: 101 INVITE..Max-Forwards: 70..Remote-P
arty-ID: <sip:5024427578 at x.x.128.205><mailto:sip:5024427578 at x.x.128.205>;party=calling;screen=no;privacy=off..Timestamp: 1341322661
..Contact: <sip:5024427578 at x.x.128.205:5060><mailto:sip:5024427578 at x.x.128.205:5060>..Expires: 180..Allow-Events: telephone-event..Conte
nt-Type: application/sdp..Content-Length: 366....v=0..o=CiscoSystemsSIP-GW-UserAgent 9094 579 IN IP
4 x.x.128.205..s=SIP Call..c=IN IP4 x.x.128.205..t=0 0..m=audio 19312 RTP/AVP 125 0 18 100 10
1..c=IN IP4 x.x.128.205..a=rtpmap:125 X-CCD/8000..a=rtpmap:0 PCMU/8000..a=rtpmap:18 G729/8000..a
=fmtp:18 annexb=yes..a=rtpmap:100 X-NSE/8000..a=fmtp:100 192-194..a=rtpmap:101 telephone-event/8000
..a=fmtp:101 0-16..
#
U x.x.130.36:5060 -> x.x.128.205:51694
SIP/2.0 100 trying -- your call is important to us..Via: SIP/2.0/UDP x.x.128.205:5060;branch=z9
hG4bK1D3CD1;rport=51694..From: <sip:5024427578 at x.x.128.205><mailto:sip:5024427578 at x.x.128.205>;tag=24513088-D59..To: <sip:502244117
4 at x.x.130.36<mailto:4 at x.x.130.36>>..Call-ID: 1887588D-C44B11E1-BE38D697-98A3E39A at x.x.128.205..CSeq<mailto:1887588D-C44B11E1-BE38D697-98A3E39A at x.x.128.205..CSeq>: 101 INVITE..Se
rver: LVS Proxy 1.0..Content-Length: 0....
#
U x.x.130.36:5060 -> x.x.129.200:5060
INVITE sip:15033441174 at x.x.129.200:5060<mailto:sip:15033441174 at x.x.129.200:5060> SIP/2.0..Record-Route: <sip:x.x.130.36;lr=on>..Via: S
IP/2.0/UDP x.x.130.36;branch=z9hG4bKc2ce.17a955a3.0..Via: SIP/2.0/UDP x.x.128.205:5060;rport
=51694;branch=z9hG4bK1D3CD1..From: <sip:5024427578 at x.x.128.205><mailto:sip:5024427578 at x.x.128.205>;tag=24513088-D59..To: <sip:50224
41174 at x.x.130.36<mailto:41174 at x.x.130.36>>..Date: Tue, 03 Jul 2012 13:37:41 GMT..Call-ID: 1887588D-C44B11E1-BE38D697-98A3
E39A at x.x.128.205..Supported<mailto:E39A at x.x.128.205..Supported>: 100rel,timer,replaces..Min-SE: 1800..Cisco-Guid: 411443261-3293254
113-3191264919-2560877466..User-Agent: Cisco-SIPGateway/IOS-12.x..Allow: INVITE, OPTIONS, BYE, CANC
EL, ACK, PRACK, COMET, REFER, SUBSCRIBE, NOTIFY, INFO, UPDATE, REGISTER..CSeq: 101 INVITE..Max-Forw
ards: 69..Remote-Party-ID: <sip:5024427578 at x.x.128.205><mailto:sip:5024427578 at x.x.128.205>;party=calling;screen=no;privacy=off..Tim
estamp: 1341322661..Contact: <sip:5024427578 at x.x.128.205:51694><mailto:sip:5024427578 at x.x.128.205:51694>..Expires: 180..Allow-Events: tel
ephone-event..Content-Type: application/sdp..Content-Length: 375....v=0..o=CiscoSystemsSIP-GW-UserA
gent 9094 579 IN IP4 10.200.1.51..s=SIP Call..c=IN IP4 10.200.1.51..t=0 0..m=audio 20464 RTP/AVP 12
5 0 18 100 101..c=IN IP4 10.200.1.51..a=rtpmap:125 X-CCD/8000..a=rtpmap:0 PCMU/8000..a=rtpmap:18 G7
29/8000..a=fmtp:18 annexb=yes..a=rtpmap:100 X-NSE/8000..a=fmtp:100 192-194..a=rtpmap:101 telephone-
event/8000..a=fmtp:101 0-16..a=nortpproxy:yes..
U x.x.129.200:5060 -> x.x.130.36:5060
SIP/2.0 100 Trying..Via: SIP/2.0/UDP x.x.130.36;branch=z9hG4bKc2ce.17a955a3.0,SIP/2.0/UDP 216.4
9.128.205:5060;rport=51694;branch=z9hG4bK1D3CD1..From: <sip:5024427578 at x.x.128.205><mailto:sip:5024427578 at x.x.128.205>;tag=24513088
-D59..To: <sip:5033441174 at x.x.130.36><mailto:sip:5033441174 at x.x.130.36>;tag=F0695368-74F..Date: Tue, 03 Jul 2012 13:37:41 GMT..Cal
l-ID: 1887588D-C44B11E1-BE38D697-98A3E39A at x.x.128.205..Timestamp<mailto:1887588D-C44B11E1-BE38D697-98A3E39A at x.x.128.205..Timestamp>: 1341322661..Server: Cisco-SIPG
ateway/IOS-12.x..CSeq: 101 INVITE..Allow-Events: telephone-event..Content-Length: 0....
#
U x.x.129.200:5060 -> x.x.130.36:5060
SIP/2.0 183 Session Progress..Via: SIP/2.0/UDP x.x.130.36;branch=z9hG4bKc2ce.17a955a3.0,SIP/2.0/
UDP x.x.128.205:5060;rport=51694;branch=z9hG4bK1D3CD1..From: <sip:5024427578 at x.x.128.205><mailto:sip:5024427578 at x.x.128.205>;ta
g=24513088-D59..To: <sip:5033441174 at x.x.130.36><mailto:sip:5033441174 at x.x.130.36>;tag=F0695368-74F..Date: Tue, 03 Jul 2012 13:37:4
1 GMT..Call-ID: 1887588D-C44B11E1-BE38D697-98A3E39A at x.x.128.205..Timestamp<mailto:1887588D-C44B11E1-BE38D697-98A3E39A at x.x.128.205..Timestamp>: 1341322661..Server:
Cisco-SIPGateway/IOS-12.x..CSeq: 101 INVITE..Require: 100rel..RSeq: 6708..Allow: INVITE, OPTIONS, B
YE, CANCEL, ACK, PRACK, COMET, REFER, SUBSCRIBE, NOTIFY, INFO, UPDATE, REGISTER..Allow-Events: tele
phone-event..Contact: <sip:15033441174 at x.x.129.200:5060><mailto:sip:15033441174 at x.x.129.200:5060>..Record-Route: <sip:x.x.130.36;lr=on
>..Content-Disposition: session;handling=required..Content-Type: application/sdp..Content-Length: 2
90....v=0..o=CiscoSystemsSIP-GW-UserAgent 2387 2116 IN IP4 x.x.129.200..s=SIP Call..c=IN IP4 216
.49.129.200..t=0 0..m=audio 18480 RTP/AVP 0 101 100..c=IN IP4 x.x.129.200..a=rtpmap:0 PCMU/8000.
.a=rtpmap:101 telephone-event/8000..a=fmtp:101 0-16..a=rtpmap:100 X-NSE/8000..a=fmtp:100 192-194..
#
U x.x.130.36:5060 -> x.x.128.205:51694
SIP/2.0 183 Session Progress..Via: SIP/2.0/UDP x.x.128.205:5060;rport=51694;branch=z9hG4bK1D3CD
1..From: <sip:5024427578 at x.x.128.205><mailto:sip:5024427578 at x.x.128.205>;tag=24513088-D59..To: <sip:5033441174 at x.x.130.36><mailto:sip:5033441174 at x.x.130.36>;tag=F
0695368-74F..Date: Tue, 03 Jul 2012 13:37:41 GMT..Call-ID: 1887588D-C44B11E1-BE38D697-98A3E39A at 216.
49.128.205..Timestamp: 1341322661..Server: Cisco-SIPGateway/IOS-12.x..CSeq: 101 INVITE..Require: 10
0rel..RSeq: 6708..Allow: INVITE, OPTIONS, BYE, CANCEL, ACK, PRACK, COMET, REFER, SUBSCRIBE, NOTIFY,
INFO, UPDATE, REGISTER..Allow-Events: telephone-event..Contact: <sip:15033441174 at x.x.129.200:50<mailto:sip:15033441174 at x.x.129.200:50>
60>..Record-Route: <sip:x.x.130.36;lr=on>..Content-Disposition: session;handling=required..Conte
nt-Type: application/sdp..Content-Length: 305....v=0..o=CiscoSystemsSIP-GW-UserAgent 2387 2116 IN I
P4 x.x.130.66..s=SIP Call..c=IN IP4 x.x.130.66..t=0 0..m=audio 19480 RTP/AVP 0 101 100..c=IN
IP4 x.x.130.66..a=rtpmap:0 PCMU/8000..a=rtpmap:101 telephone-event/8000..a=fmtp:101 0-16..a=rtpm
ap:100 X-NSE/8000..a=fmtp:100 192-194..a=nortpproxy:yes..
#
U x.x.128.205:51694 -> x.x.130.36:5060
PRACK sip:15033441174 at x.x.129.200:5060<mailto:sip:15033441174 at x.x.129.200:5060> SIP/2.0..Via: SIP/2.0/UDP x.x.128.205:5060;branch=z9h
G4bK1D4474..From: <sip:5024427578 at x.x.128.205><mailto:sip:5024427578 at x.x.128.205>;tag=24513088-D59..To: <sip:5033441174 at x.x.130<mailto:sip:5033441174 at x.x.130>.
36>;tag=F0695368-74F..Date: Tue, 03 Jul 2012 13:37:41 GMT..Call-ID: 1887588D-C44B11E1-BE38D697-98A3
E39A at x.x.128.205..CSeq<mailto:E39A at x.x.128.205..CSeq>: 102 PRACK..RAck: 6708 101 INVITE..Route: <sip:x.x.130.36;lr=on>..Max-
Forwards: 70..Content-Length: 0....
#
U x.x.130.34:5060 -> x.x.129.200:5060
PRACK sip:15033441174 at x.x.129.200:5060<mailto:sip:15033441174 at x.x.129.200:5060> SIP/2.0..Via: SIP/2.0/UDP x.x.130.34;branch=z9hG4bK92c
e.4def8436.0..Via: SIP/2.0/UDP x.x.128.205:5060;rport=51694;branch=z9hG4bK1D4474..From: <sip:50
24427578 at x.x.128.205<mailto:24427578 at x.x.128.205>>;tag=24513088-D59..To: <sip:5033441174 at x.x.130.36><mailto:sip:5033441174 at x.x.130.36>;tag=F0695368-74F..Dat
e: Tue, 03 Jul 2012 13:37:41 GMT..Call-ID: 1887588D-C44B11E1-BE38D697-98A3E39A at x.x.128.205..CSeq<mailto:1887588D-C44B11E1-BE38D697-98A3E39A at x.x.128.205..CSeq>
: 102 PRACK..RAck: 6708 101 INVITE..Max-Forwards: 69..Content-Length: 0....
#
U x.x.129.200:5060 -> x.x.130.34:5060
SIP/2.0 200 OK..Via: SIP/2.0/UDP x.x.130.34;branch=z9hG4bK92ce.4def8436.0,SIP/2.0/UDP x.x.12
8.205:5060;rport=51694;branch=z9hG4bK1D4474..From: <sip:5024427578 at x.x.128.205><mailto:sip:5024427578 at x.x.128.205>;tag=24513088-D59
..To: <sip:5033441174 at x.x.130.36><mailto:sip:5033441174 at x.x.130.36>;tag=F0695368-74F..Date: Tue, 03 Jul 2012 13:37:41 GMT..Call-ID
: 1887588D-C44B11E1-BE38D697-98A3E39A at x.x.128.205..Server<mailto:1887588D-C44B11E1-BE38D697-98A3E39A at x.x.128.205..Server>: Cisco-SIPGateway/IOS-12.x..CSeq: 102
PRACK..Content-Length: 0....
#
U x.x.130.36:5060 -> x.x.128.205:51694
SIP/2.0 200 OK..Via: SIP/2.0/UDP x.x.128.205:5060;rport=51694;branch=z9hG4bK1D4474..From: <sip:
5024427578 at x.x.128.205<mailto:5024427578 at x.x.128.205>>;tag=24513088-D59..To: <sip:5033441174 at x.x.130.36><mailto:sip:5033441174 at x.x.130.36>;tag=F0695368-74F..D
ate: Tue, 03 Jul 2012 13:37:41 GMT..Call-ID: 1887588D-C44B11E1-BE38D697-98A3E39A at x.x.128.205..Se<mailto:1887588D-C44B11E1-BE38D697-98A3E39A at x.x.128.205..Se>
rver: Cisco-SIPGateway/IOS-12.x..CSeq: 102 PRACK..Content-Length: 0....
U x.x.129.200:5060 -> x.x.130.36:5060
SIP/2.0 200 OK..Via: SIP/2.0/UDP x.x.130.36;branch=z9hG4bKc2ce.17a955a3.0,SIP/2.0/UDP x.x.12
8.205:5060;rport=51694;branch=z9hG4bK1D3CD1..From: <sip:5024427578 at x.x.128.205><mailto:sip:5024427578 at x.x.128.205>;tag=24513088-D59
..To: <sip:5033441174 at x.x.130.36><mailto:sip:5033441174 at x.x.130.36>;tag=F0695368-74F..Date: Tue, 03 Jul 2012 13:37:41 GMT..Call-ID
: 1887588D-C44B11E1-BE38D697-98A3E39A at x.x.128.205..Timestamp<mailto:1887588D-C44B11E1-BE38D697-98A3E39A at x.x.128.205..Timestamp>: 1341322661..Server: Cisco-SIPGatew
ay/IOS-12.x..CSeq: 101 INVITE..Allow: INVITE, OPTIONS, BYE, CANCEL, ACK, PRACK, COMET, REFER, SUBSC
RIBE, NOTIFY, INFO, UPDATE, REGISTER..Allow-Events: telephone-event..Contact: <sip:15033441174 at 216.
49.129.200:5060>..Record-Route: <sip:x.x.130.36;lr=on>..Content-Type: application/sdp..Content-L
ength: 290....v=0..o=CiscoSystemsSIP-GW-UserAgent 2387 2116 IN IP4 x.x.129.200..s=SIP Call..c=IN
IP4 x.x.129.200..t=0 0..m=audio 18480 RTP/AVP 0 101 100..c=IN IP4 x.x.129.200..a=rtpmap:0 PC
MU/8000..a=rtpmap:101 telephone-event/8000..a=fmtp:101 0-16..a=rtpmap:100 X-NSE/8000..a=fmtp:100 19
2-194..
#
U x.x.130.36:5060 -> x.x.128.205:51694
SIP/2.0 200 OK..Via: SIP/2.0/UDP x.x.128.205:5060;rport=51694;branch=z9hG4bK1D3CD1..From: <sip:
5024427578 at x.x.128.205<mailto:5024427578 at x.x.128.205>>;tag=24513088-D59..To: <sip:5033441174 at x.x.130.36><mailto:sip:5033441174 at x.x.130.36>;tag=F0695368-74F..D
ate: Tue, 03 Jul 2012 13:37:41 GMT..Call-ID: 1887588D-C44B11E1-BE38D697-98A3E39A at x.x.128.205..Ti<mailto:1887588D-C44B11E1-BE38D697-98A3E39A at x.x.128.205..Ti>
mestamp: 1341322661..Server: Cisco-SIPGateway/IOS-12.x..CSeq: 101 INVITE..Allow: INVITE, OPTIONS, B
YE, CANCEL, ACK, PRACK, COMET, REFER, SUBSCRIBE, NOTIFY, INFO, UPDATE, REGISTER..Allow-Events: tele
phone-event..Contact: <sip:15033441174 at x.x.129.200:5060><mailto:sip:15033441174 at x.x.129.200:5060>..Record-Route: <sip:x.x.130.36;lr=on
>..Content-Type: application/sdp..Content-Length: 305....v=0..o=CiscoSystemsSIP-GW-UserAgent 2387 2
116 IN IP4 x.x.130.66..s=SIP Call..c=IN IP4 x.x.130.66..t=0 0..m=audio 19480 RTP/AVP 0 101 10
0..c=IN IP4 x.x.130.66..a=rtpmap:0 PCMU/8000..a=rtpmap:101 telephone-event/8000..a=fmtp:101 0-16
..a=rtpmap:100 X-NSE/8000..a=fmtp:100 192-194..a=nortpproxy:yes..
#
U x.x.128.205:51694 -> x.x.130.36:5060
ACK sip:15033441174 at x.x.129.200:5060<mailto:sip:15033441174 at x.x.129.200:5060> SIP/2.0..Via: SIP/2.0/UDP x.x.128.205:5060;branch=z9hG4
bK1D5DA6..From: <sip:5024427578 at x.x.128.205><mailto:sip:5024427578 at x.x.128.205>;tag=24513088-D59..To: <sip:5033441174 at x.x.130.36<mailto:sip:5033441174 at x.x.130.36>
>;tag=F0695368-74F..Date: Tue, 03 Jul 2012 13:37:41 GMT..Call-ID: 1887588D-C44B11E1-BE38D697-98A3E3
9A at x.x.128.205<mailto:9A at x.x.128.205>..Route: <sip:x.x.130.36;lr=on>..Max-Forwards: 70..CSeq: 101 ACK..Content-Lengt
h: 0....
#
U x.x.130.34:5060 -> x.x.129.200:5060
ACK sip:15033441174 at x.x.129.200:5060<mailto:sip:15033441174 at x.x.129.200:5060> SIP/2.0..Via: SIP/2.0/UDP x.x.130.34;branch=z9hG4bKcydzi
gwkX..Via: SIP/2.0/UDP x.x.128.205:5060;rport=51694;branch=z9hG4bK1D5DA6..From: <sip:5024427578
@x.x.128.205>;tag=24513088-D59..To: <sip:5033441174 at x.x.130.36><mailto:sip:5033441174 at x.x.130.36>;tag=F0695368-74F..Date: Tue,
03 Jul 2012 13:37:41 GMT..Call-ID: 1887588D-C44B11E1-BE38D697-98A3E39A at x.x.128.205..Max-Forwards<mailto:1887588D-C44B11E1-BE38D697-98A3E39A at x.x.128.205..Max-Forwards>
: 69..CSeq: 101 ACK..Content-Length: 0....
#
U x.x.128.205:51694 -> x.x.130.36:5060
BYE sip:15033441174 at x.x.129.200:5060<mailto:sip:15033441174 at x.x.129.200:5060> SIP/2.0..Via: SIP/2.0/UDP x.x.128.205:5060;branch=z9hG4
bK1D61CE7..From: <sip:5024427578 at x.x.128.205><mailto:sip:5024427578 at x.x.128.205>;tag=24513088-D59..To: <sip:5033441174 at x.x.130.3<mailto:sip:5033441174 at x.x.130.3>
6>;tag=F0695368-74F..Date: Tue, 03 Jul 2012 13:37:41 GMT..Call-ID: 1887588D-C44B11E1-BE38D697-98A3E
39A at x.x.128.205..User-Agent<mailto:39A at x.x.128.205..User-Agent>: Cisco-SIPGateway/IOS-12.x..Max-Forwards: 70..Route: <sip:x.x.130
.36;lr=on>..Timestamp: 1341322666..CSeq: 103 BYE..Reason: Q.850;cause=16..Content-Length: 0....
#
U x.x.130.34:5060 -> x.x.129.200:5060
BYE sip:15033441174 at x.x.129.200:5060<mailto:sip:15033441174 at x.x.129.200:5060> SIP/2.0..Via: SIP/2.0/UDP x.x.130.34;branch=z9hG4bKa2ce.
4ba2ee65.0..Via: SIP/2.0/UDP x.x.128.205:5060;rport=51694;branch=z9hG4bK1D61CE7..From: <sip:502
4427578 at x.x.128.205<mailto:4427578 at x.x.128.205>>;tag=24513088-D59..To: <sip:5033441174 at x.x.130.36><mailto:sip:5033441174 at x.x.130.36>;tag=F0695368-74F..Date
: Tue, 03 Jul 2012 13:37:41 GMT..Call-ID: 1887588D-C44B11E1-BE38D697-98A3E39A at x.x.128.205..User<mailto:1887588D-C44B11E1-BE38D697-98A3E39A at x.x.128.205..User>-
Agent: Cisco-SIPGateway/IOS-12.x..Max-Forwards: 69..Timestamp: 1341322666..CSeq: 103 BYE..Reason: Q
.850;cause=16..Content-Length: 0....
#
U x.x.129.200:5060 -> x.x.130.34:5060
SIP/2.0 200 OK..Via: SIP/2.0/UDP x.x.130.34;branch=z9hG4bKa2ce.4ba2ee65.0,SIP/2.0/UDP x.x.12
8.205:5060;rport=51694;branch=z9hG4bK1D61CE7..From: <sip:5024427578 at x.x.128.205><mailto:sip:5024427578 at x.x.128.205>;tag=24513088-D5
9..To: <sip:5033441174 at x.x.130.36><mailto:sip:5033441174 at x.x.130.36>;tag=F0695368-74F..Date: Tue, 03 Jul 2012 13:37:46 GMT..Call-I
D: 1887588D-C44B11E1-BE38D697-98A3E39A at x.x.128.205..Server<mailto:1887588D-C44B11E1-BE38D697-98A3E39A at x.x.128.205..Server>: Cisco-SIPGateway/IOS-12.x..Timestamp
: 1341322666..Content-Length: 0..CSeq: 103 BYE....
#
U x.x.130.36:5060 -> x.x.128.205:51694
SIP/2.0 200 OK..Via: SIP/2.0/UDP x.x.128.205:5060;rport=51694;branch=z9hG4bK1D61CE7..From: <sip
:5024427578 at x.x.128.205>;tag=24513088-D59..To: <sip:5033441174 at x.x.130.36><mailto:sip:5033441174 at x.x.130.36>;tag=F0695368-74F..
Date: Tue, 03 Jul 2012 13:37:46 GMT..Call-ID: 1887588D-C44B11E1-BE38D697-98A3E39A at x.x.128.205..S<mailto:1887588D-C44B11E1-BE38D697-98A3E39A at x.x.128.205..S>
erver: Cisco-SIPGateway/IOS-12.x..Timestamp: 1341322666..Content-Length: 0..CSeq: 103 BYE....
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