11 Sep
2012
11 Sep
'12
4:12 p.m.
Hello,
I'm having some issues getting media bridging working in kamailio and
rtpproxy. I've attempted to attach as much relevant information as
possible. Thanks in advance for taking a look; I'm completely stuck
right now.
Actual results:No audio is being passed through the rtpproxy from caller
"A" to caller "B" even though both media server and UAC are sending
media to the rtpproxy.
Expected results:Audio that is sent to rtpproxy is bridged/proxied
across from caller "A" to caller "B" and vice-versa.
-------------------------------------------------------------------------------
Signaling trace:
-------------------------------------------------------------------------------
08:34:57.543224 IP (tos 0x0, ttl 49, id 3237, offset 0, flags [none],
proto: UDP (17), length: 1456) x.x.x.199.31280 > x.x.x.102.sip: SIP,
length: 1428
INVITE sip:9991@r18.test-bwks.local:5060 SIP/2.0
Via: SIP/2.0/UDP
192.168.2.250:51620;branch=z9hG4bK1158b9f850c008ff7.6835b1eb6e3bffee5
Route: <sip:x.x.x.102:5060;lr>
Max-Forwards: 70
From: "99999999"
<sip:99999999@r18.test-bwks.local:5060>;tag=1cf0b02fab
To: "9991" <sip:9991@r18.test-bwks.local:5060>
Call-ID: b2af8b83e20b0740
CSeq: 29663 INVITE
Allow: INVITE, ACK, CANCEL, BYE, NOTIFY, REFER, OPTIONS,
UPDATE, PRACK, SUBSCRIBE, INFO
Allow-Events: talk, hold, conference, LocalModeStatus
Contact: "99999999"
<sip:99999999@192.168.2.250:51620;transport=udp;srcadr=192.168.2.250:5060>;+sip.instance="<urn:uuid:00000000-0000-1000-8000-00085D2DF3BB>"
Supported: gruu, path, timer, 100rel, replaces
User-Agent: Aastra 57i/2.6.0.1007
Content-Type: application/sdp
Content-Length: 619
v=0
o=MxSIP 0 0 IN IP4 192.168.2.250
s=SIP Call
c=IN IP4 192.168.2.250
t=0 0
m=audio 51720 RTP/AVP 0 18 106 107 113 110 111 112 98 97 115 96
9 8 101
a=rtpmap:0 PCMU/8000
a=rtpmap:18 G729/8000
a=rtpmap:106 BV16/8000
a=rtpmap:107 BV32/16000
a=rtpmap:113 L16/16000
a=rtpmap:110 PCMU/16000
a=rtpmap:111 PCMA/16000
a=rtpmap:112 L16/8000
a=rtpmap:98 G726-16/8000
a=rtpmap:97 G726-24/8000
a=rtpmap:115 G726-32/8000
a=rtpmap:96 G726-40/8000
a=rtpmap:9 G722/8000
a=rtpmap:8 PCMA/8000
a=rtpmap:101 telephone-event/8000
a=silenceSupp:on - - - -
a=fmtp:18 annexb=yes
a=fmtp:101 0-15
a=ptime:30
a=sendrecv
08:34:57.545766 IP (tos 0x10, ttl 64, id 58136, offset 0, flags [none],
proto: UDP (17), length: 439) x.x.x.102.sip > x.x.x.199.31280: SIP,
length: 411
SIP/2.0 100 trying -- your call is important to us
Via: SIP/2.0/UDP
192.168.2.250:51620;branch=z9hG4bK1158b9f850c008ff7.6835b1eb6e3bffee5;rport=31280;received=x.x.x.199
From: "99999999"
<sip:99999999@r18.test-bwks.local:5060>;tag=1cf0b02fab
To: "9991" <sip:9991@r18.test-bwks.local:5060>
Call-ID: b2af8b83e20b0740
CSeq: 29663 INVITE
Server: kamailio (3.2.4 (x86_64/linux))
Content-Length: 0
08:34:57.547619 IP (tos 0x10, ttl 64, id 47936, offset 0, flags [+],
proto: UDP (17), length: 1500) 10.0.0.38.sip > 10.0.0.29.sip: SIP,
length: 1472
INVITE sip:9991@10.0.0.29 SIP/2.0
Record-Route: <sip:10.0.0.38;r2=on;lr=on;nat=yes>
Record-Route: <sip:x.x.x.102;r2=on;lr=on;nat=yes>
Via: SIP/2.0/UDP 10.0.0.38;branch=z9hG4bK4ed5.ec1e41a.0
Via: SIP/2.0/UDP
192.168.2.250:51620;rport=31280;received=x.x.x.199;branch=z9hG4bK1158b9f850c008ff7.6835b1eb6e3bffee5
Max-Forwards: 69
From: "99999999"
<sip:99999999@r18.test-bwks.local:5060>;tag=1cf0b02fab
To: "9991" <sip:9991@r18.test-bwks.local:5060>
Call-ID: b2af8b83e20b0740
CSeq: 29663 INVITE
Allow: INVITE, ACK, CANCEL, BYE, NOTIFY, REFER, OPTIONS,
UPDATE, PRACK, SUBSCRIBE, INFO
Allow-Events: talk, hold, conference, LocalModeStatus
Contact: "99999999"
<sip:99999999@x.x.x.199:31280;transport=udp;srcadr=192.168.2.250:5060>;+sip.instance="<urn:uuid:00000000-0000-1000-8000-00085D2DF3BB>"
Supported: gruu, path, timer, 100rel, replaces
User-Agent: Aastra 57i/2.6.0.1007
Content-Type: application/sdp
Content-Length: 629
v=0
o=MxSIP 0 0 IN IP4 10.0.0.38
s=SIP Call
c=IN IP4 10.0.0.38
t=0 0
m=audio 29682 RTP/AVP 0 18 106 107 113 110 111 112 98 97 115 96
9 8 101
a=rtpmap:0 PCMU/8000
a=rtpmap:18 G729/8000
a=rtpmap:106 BV16/8000
a=rtpmap:107 BV32/16000
a=rtpmap:113 L16/16000
a=rtpmap:110 PCMU/16000
a=rtpmap:111 PCMA/16000
a=rtpmap:112 L16/8000
a=rtpmap:98 G726-16/8000
a=rtpmap:97 G726-24/8000
a=rtpmap:115 G726-32/8000
a=rtpmap:96 G726-40/8000
a=rtpmap:9 G722/8000
a=rtpmap:8 PCMA/8000
a=rtpmap:101 telephone-event
08:34:57.551126 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto:
UDP (17), length: 409) 10.0.0.29.55620 > 10.0.0.38.sip: SIP, length: 381
SIP/2.0 100 Trying
Via:SIP/2.0/UDP
10.0.0.38;branch=z9hG4bK4ed5.ec1e41a.0,SIP/2.0/UDP
192.168.2.250:51620;received=x.x.x.199;branch=z9hG4bK1158b9f850c008ff7.6835b1eb6e3bffee5;rport=31280
From:"99999999"<sip:99999999@r18.test-bwks.local:5060>;tag=1cf0b02fab
To:"9991"<sip:9991@r18.test-bwks.local:5060>
Call-ID:b2af8b83e20b0740
CSeq:29663 INVITE
Content-Length:0
08:34:57.561084 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto:
UDP (17), length: 723) 10.0.0.29.55620 > 10.0.0.38.sip: SIP, length: 695
SIP/2.0 180 Ringing
Via:SIP/2.0/UDP
10.0.0.38;branch=z9hG4bK4ed5.ec1e41a.0,SIP/2.0/UDP
192.168.2.250:51620;received=x.x.x.199;branch=z9hG4bK1158b9f850c008ff7.6835b1eb6e3bffee5;rport=31280
From:"99999999"<sip:99999999@r18.test-bwks.local:5060>;tag=1cf0b02fab
To:"9991"<sip:9991@r18.test-bwks.local:5060>;tag=1693866893-1347366897367
Call-ID:b2af8b83e20b0740
CSeq:29663 INVITE
Supported:
Contact:<sip:10.0.0.29:5060>
Record-Route:<sip:10.0.0.38;r2=on;lr=on;nat=yes>,<sip:x.x.x.102;r2=on;lr=on;nat=yes>
P-Asserted-Identity:"Auto
Attendant"<sip:9991@10.0.0.29;user=phone>
Privacy:none
Allow:ACK,BYE,CANCEL,INFO,INVITE,OPTIONS,PRACK,REFER,NOTIFY,UPDATE
Content-Length:0
08:34:57.562404 IP (tos 0x10, ttl 64, id 58137, offset 0, flags [none],
proto: UDP (17), length: 672) x.x.x.102.sip > x.x.x.199.31280: SIP,
length: 644
SIP/2.0 180 Ringing
Via:SIP/2.0/UDP
192.168.2.250:51620;received=x.x.x.199;branch=z9hG4bK1158b9f850c008ff7.6835b1eb6e3bffee5;rport=31280
From:"99999999"<sip:99999999@r18.test-bwks.local:5060>;tag=1cf0b02fab
To:"9991"<sip:9991@r18.test-bwks.local:5060>;tag=1693866893-1347366897367
Call-ID:b2af8b83e20b0740
CSeq:29663 INVITE
Supported:
Contact:<sip:10.0.0.29:5060>
Record-Route:<sip:10.0.0.38;r2=on;lr=on;nat=yes>,<sip:x.x.x.102;r2=on;lr=on;nat=yes>
P-Asserted-Identity:"Auto
Attendant"<sip:9991@10.0.0.29;user=phone>
Privacy:none
Allow:ACK,BYE,CANCEL,INFO,INVITE,OPTIONS,PRACK,REFER,NOTIFY,UPDATE
Content-Length:0
08:34:57.609771 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto:
UDP (17), length: 953) 10.0.0.29.55620 > 10.0.0.38.sip: SIP, length: 925
SIP/2.0 200 OK
Via:SIP/2.0/UDP
10.0.0.38;branch=z9hG4bK4ed5.ec1e41a.0,SIP/2.0/UDP
192.168.2.250:51620;received=x.x.x.199;branch=z9hG4bK1158b9f850c008ff7.6835b1eb6e3bffee5;rport=31280
From:"99999999"<sip:99999999@r18.test-bwks.local:5060>;tag=1cf0b02fab
To:"9991"<sip:9991@r18.test-bwks.local:5060>;tag=1693866893-1347366897367
Call-ID:b2af8b83e20b0740
CSeq:29663 INVITE
Supported:
Contact:<sip:10.0.0.29:5060>
Record-Route:<sip:10.0.0.38;r2=on;lr=on;nat=yes>,<sip:x.x.x.102;r2=on;lr=on;nat=yes>
P-Asserted-Identity:"Auto
Attendant"<sip:9991@10.0.0.29;user=phone>
Privacy:none
Allow:ACK,BYE,CANCEL,INFO,INVITE,OPTIONS,PRACK,REFER,NOTIFY,UPDATE
Accept:application/media_control+xml,application/sdp,multipart/mixed
Content-Type:application/sdp
Content-Length:133
v=0
o=BroadWorks 196 1 IN IP4 10.0.0.24
s=-
c=IN IP4 10.0.0.24
t=0 0
m=audio 10498 RTP/AVP 0
a=rtpmap:0 PCMU/8000
a=ptime:20
08:34:57.612047 IP (tos 0x10, ttl 64, id 58138, offset 0, flags [none],
proto: UDP (17), length: 930) x.x.x.102.sip > x.x.x.199.31280: SIP,
length: 902
SIP/2.0 200 OK
Via:SIP/2.0/UDP
192.168.2.250:51620;received=x.x.x.199;branch=z9hG4bK1158b9f850c008ff7.6835b1eb6e3bffee5;rport=31280
From:"99999999"<sip:99999999@r18.test-bwks.local:5060>;tag=1cf0b02fab
To:"9991"<sip:9991@r18.test-bwks.local:5060>;tag=1693866893-1347366897367
Call-ID:b2af8b83e20b0740
CSeq:29663 INVITE
Supported:
Contact:<sip:10.0.0.29:5060>
Record-Route:<sip:10.0.0.38;r2=on;lr=on;nat=yes>,<sip:x.x.x.102;r2=on;lr=on;nat=yes>
P-Asserted-Identity:"Auto
Attendant"<sip:9991@10.0.0.29;user=phone>
Privacy:none
Allow:ACK,BYE,CANCEL,INFO,INVITE,OPTIONS,PRACK,REFER,NOTIFY,UPDATE
Accept:application/media_control+xml,application/sdp,multipart/mixed
Content-Type:application/sdp
Content-Length:161
v=0
o=BroadWorks 196 1 IN IP4 x.x.x.102
s=-
c=IN IP4 x.x.x.102
t=0 0
m=audio 29774 RTP/AVP 0
a=rtpmap:0 PCMU/8000
a=ptime:20
a=sdpmangled:yes
08:34:57.844645 IP (tos 0x0, ttl 49, id 3239, offset 0, flags [none],
proto: UDP (17), length: 506) x.x.x.199.31280 > x.x.x.102.sip: SIP,
length: 478
ACK sip:10.0.0.29:5060 SIP/2.0
Via: SIP/2.0/UDP
192.168.2.250:51620;branch=z9hG4bK15c3c5e900b3f6d36.26b037b92d0bba7c9
Route: <sip:x.x.x.102;r2=on;lr=on;nat=yes>,
<sip:10.0.0.38;r2=on;lr=on;nat=yes>
Max-Forwards: 70
From: "99999999"
<sip:99999999@r18.test-bwks.local:5060>;tag=1cf0b02fab
To: "9991"
<sip:9991@r18.test-bwks.local:5060>;tag=1693866893-1347366897367
Call-ID: b2af8b83e20b0740
CSeq: 29663 ACK
User-Agent: Aastra 57i/2.6.0.1007
Content-Length: 0
08:34:57.845182 IP (tos 0x10, ttl 64, id 47937, offset 0, flags [none],
proto: UDP (17), length: 509) 10.0.0.38.sip > 10.0.0.29.sip: SIP,
length: 481
ACK sip:10.0.0.29:5060 SIP/2.0
Via: SIP/2.0/UDP 10.0.0.38;branch=z9hG4bKcydzigwkX
Via: SIP/2.0/UDP
192.168.2.250:51620;rport=31280;received=x.x.x.199;branch=z9hG4bK15c3c5e900b3f6d36.26b037b92d0bba7c9
Max-Forwards: 69
From: "99999999"
<sip:99999999@r18.test-bwks.local:5060>;tag=1cf0b02fab
To: "9991"
<sip:9991@r18.test-bwks.local:5060>;tag=1693866893-1347366897367
Call-ID: b2af8b83e20b0740
CSeq: 29663 ACK
User-Agent: Aastra 57i/2.6.0.1007
Content-Length: 0
-------------------------------------------------------------------------------
The call session is up at this point.
CPE Router, Source NAT IP x.x.x.199, Internal Network: 192.168.2.0/24
192.168.2.250 is an Aastra 6757i IP Phone, behind the
x.x.x.102 is the external interface on our SIP proxy allowing traffic on:
Inbound: port 5060/udp
Inbound: range 16384 - 32768/udp
10.0.0.38 is the internal interface facing our BroadWorks lab
cluster
10.0.0.29 is the internal interface of our BroadWorks
Application Server
10.0.0.24 is the internal interface of our BroadWorks Media
Server
RTP Proxy has been spawned with the following command line arguments:
/usr/bin/rtpproxy -p /var/run/rtpproxy.pid -u rtpproxy \
-u root \
-s udp:localhost:7722 \
-l x.x.x.102/10.0.0.38 \
-d DBUG LOG_LOCAL5 \
-m 16384 -M 32768
We've changed the /etc/kamailio/kamailio.cfg and added the #!define's at
the top of the
configuration file:
#!define WITH_NAT
#!define WITH_DEBUG
In the route[NATMANAGE] { } block we've added a few additional lines to
handle the setup
of the rtpproxy_manage() function which handles the rtpproxy_offer(),
rtpproxy_answer()
and unforce_rtp_proxy() convientenly in one function.
The logic we've got in place currently is:
if ((src_ip =~ "10\.0\.0\.*") && (dst_ip =~
"10\.0\.0\.*")) {
xlog("L_INFO", "Media session for ($ci) with source address
($si): Internal > External: SDP contact/origin will be x.x.x.102");
rtpproxy_manage("FAIEOC", "x.x.x.102");
} else if (!(src_ip =~ "10\.0\.0\.*") && (dst_ip == x.x.x.102)) {
xlog("L_INFO", "Media session for ($ci) with source address
($si): External > Internal: SDP contact/origin will be 10.0.0.38");
rtpproxy_manage("FAEIOC", "10.0.0.38");
} else {
xlog("L_INFO", "!!! Uncaught condition for media session
for ($ci) with source address ($si) !!!");
}
This rtpproxy log is not from the call above, but the same source #,
destination # were used:
Sep 11 08:50:27 sip-proxy1 rtpproxy[3101]: INFO:handle_command: new
session 84bf2a7cb9d4ab24, tag dcfa6a860e;1 requested, type strong
Sep 11 08:50:27 sip-proxy1 rtpproxy[3101]: INFO:handle_command: new
session on a port 28282 created, tag dcfa6a860e;1
Sep 11 08:50:27 sip-proxy1 rtpproxy[3101]: INFO:handle_command:
pre-filling caller's address with 192.168.2.250:51720
Sep 11 08:50:27 sip-proxy1 rtpproxy[3101]: INFO:handle_command: lookup
on ports 28282/22500, session timer restarted
Sep 11 08:50:27 sip-proxy1 rtpproxy[3101]: INFO:handle_command:
pre-filling callee's address with 10.0.0.24:10502
... Call is currently active and then hung-up ...
Sep 11 08:51:28 sip-proxy1 rtpproxy[3101]: INFO:process_rtp: session timeout
Sep 11 08:51:28 sip-proxy1 rtpproxy[3101]: INFO:remove_session: RTP
stats: 0 in from callee, 0 in from caller, 0 relayed, 0 dropped
Sep 11 08:51:28 sip-proxy1 rtpproxy[3101]: INFO:remove_session: RTCP
stats: 0 in from callee, 0 in from caller, 0 relayed, 0 dropped
Sep 11 08:51:28 sip-proxy1 rtpproxy[3101]: INFO:remove_session: session
on ports 28282/22500 is cleaned up
Example of the RTP:
08:53:13.555834 IP (tos 0x0, ttl 48, id 510, offset 0, flags [none],
proto: UDP (17), length: 200) x.x.x.199.32052 > x.x.x.102.16552: UDP,
length 172
x.x.x.199:32052 > x.x.x.102:16552
Why is this packet not being forwarded to the media proxy
(rtpproxy) to 10.0.0.24 (specified in the 200 OK from the
BroadWorks Application Server)
08:53:13.562206 IP (tos 0x10, ttl 64, id 0, offset 0, flags [DF],
proto: UDP (17), length: 200) 10.0.0.24.10504 > 10.0.0.38.17968: UDP,
length 172
10.0.0.24:10504 > 10.0.0.38:17968
Why is this packet not being forwarded from rtpproxy to the UAC
at x.x.x.199?
-------------------------------------------------------------------------------
System details:
-------------------------------------------------------------------------------
OS: CentOS 5.8 x86-64, Hypervisor is qemu-kvm
Memory: 2GB
Disk: 40G
VCPU: 1
/etc/sysctl.conf:
# Controls IP packet forwarding
net.ipv4.ip_forward = 1
-------------------------------------------------------------------------------
Current software versions:
-------------------------------------------------------------------------------
[root@sip-proxy1 kamailio]# rpm -qa | grep -E 'kamailio|rtpproxy' |
xargs rpm -qi
Name : rtpproxy Relocations: (not relocatable)
Version : 1.2.1 Vendor: Fedora Project
Release : 2.el5 Build Date: Sun 19 Sep 2010
08:12:23 AM EDT
Install Date: Mon 10 Sep 2012 09:23:28 PM EDT Build Host:
x86-10.phx2.fedoraproject.org
Group : Applications/Internet Source RPM:
rtpproxy-1.2.1-2.el5.src.rpm
Size : 105682 License: BSD
Signature : DSA/SHA1, Mon 20 Sep 2010 12:40:46 PM EDT, Key ID
119cc036217521f6
Packager : Fedora Project
URL : http://www.rtpproxy.org
Summary : A symmetric RTP proxy
Description :
This is symmetric RTP proxy designed to be used in conjunction with
the SIP Express Router (SER) or any other SIP proxy capable of
rewriting SDP bodies in SIP messages that it processes.
Name : kamailio Relocations: (not relocatable)
Version : 3.2.4 Vendor: kamailio.org
Release : 1.1 Build Date: Fri 03 Aug 2012
05:14:14 AM EDT
Install Date: Tue 11 Sep 2012 08:22:32 AM EDT Build Host: build08
Group : Productivity/Telephony/SIP/Servers Source RPM:
kamailio-3.2.4-1.1.src.rpm
Size : 10200784 License: GPL
Signature : DSA/SHA1, Fri 03 Aug 2012 05:14:38 AM EDT, Key ID
c9a75909941fdbdd
Packager : Daniel-Constantin Mierla <miconda(a)gmail.com>
URL : http://kamailio.org/
Summary : Kamailio, very fast, reliable and flexible SIP Server
Description :
Kamailio is a very fast, reliable and flexible SIP (RFC3261)
proxy server. Written entirely in C, kamailio can handle thousands calls
per second even on low-budget hardware. A C Shell like scripting language
provides full control over the server's behaviour. It's modular
architecture allows only required functionality to be loaded.
Among available features: IPv4, IPv6, digest authentication, accounting,
CPL scripts, instant messaging, MySQL and UNIXODBC support, SIMPLE presence
agent, radius authentication, record routing, SMS gateway, ENUM, UDP, TCP,
TLS and SCTP, transaction and dialog module, OSP module, statistics support,
registrar and user location, SNMP, SIMPLE Presence and Perl programming
interface.
Name : kamailio-cpl Relocations: (not relocatable)
Version : 3.2.4 Vendor: kamailio.org
Release : 1.1 Build Date: Fri 03 Aug 2012
05:14:14 AM EDT
Install Date: Tue 11 Sep 2012 08:22:33 AM EDT Build Host: build08
Group : Productivity/Telephony/SIP/Servers Source RPM:
kamailio-3.2.4-1.1.src.rpm
Size : 296947 License: GPL
Signature : DSA/SHA1, Fri 03 Aug 2012 05:14:38 AM EDT, Key ID
c9a75909941fdbdd
Packager : Daniel-Constantin Mierla <miconda(a)gmail.com>
URL : http://kamailio.org/
Summary : CPL module (CPL interpreter engine) for Kamailio
Description :
The kamailio-cpl package provides a CPL interpreter engine for Kamailio
12 Sep
12 Sep
5:12 p.m.
New subject: Kamailio 3.2, NAT, rtpproxy bridging between interfaces
Hello,
are the SDP bodies full in your traces? I don't see the 'a=' rtpproxy
marker line.
You should not give anymore the second parameter to rtpproxy_manage() if
the rtpproxy is in bridging mode and you use flags I, E.
Also, I don't see the logs from kamailio, you added some xlog() lines in
your config...
Cheers,
Daniel
On 9/11/12 3:12 PM, Russell McConnachie wrote:
Hello,
I'm having some issues getting media bridging working in kamailio and
rtpproxy. I've attempted to attach as much relevant information as
possible. Thanks in advance for taking a look; I'm completely stuck
right now.
Actual results:No audio is being passed through the rtpproxy from
caller "A" to caller "B" even though both media server and UAC are
sending media to the rtpproxy.
Expected results:Audio that is sent to rtpproxy is bridged/proxied
across from caller "A" to caller "B" and vice-versa.
-------------------------------------------------------------------------------
Signaling trace:
-------------------------------------------------------------------------------
08:34:57.543224 IP (tos 0x0, ttl 49, id 3237, offset 0, flags [none],
proto: UDP (17), length: 1456) x.x.x.199.31280 > x.x.x.102.sip: SIP,
length: 1428
INVITE sip:9991@r18.test-bwks.local:5060 SIP/2.0
Via: SIP/2.0/UDP
192.168.2.250:51620;branch=z9hG4bK1158b9f850c008ff7.6835b1eb6e3bffee5
Route: <sip:x.x.x.102:5060;lr>
Max-Forwards: 70
From: "99999999"
<sip:99999999@r18.test-bwks.local:5060>;tag=1cf0b02fab
To: "9991" <sip:9991@r18.test-bwks.local:5060>
Call-ID: b2af8b83e20b0740
CSeq: 29663 INVITE
Allow: INVITE, ACK, CANCEL, BYE, NOTIFY, REFER, OPTIONS,
UPDATE, PRACK, SUBSCRIBE, INFO
Allow-Events: talk, hold, conference, LocalModeStatus
Contact: "99999999"
<sip:99999999@192.168.2.250:51620;transport=udp;srcadr=192.168.2.250:5060>;+sip.instance="<urn:uuid:00000000-0000-1000-8000-00085D2DF3BB>"
Supported: gruu, path, timer, 100rel, replaces
User-Agent: Aastra 57i/2.6.0.1007
Content-Type: application/sdp
Content-Length: 619
v=0
o=MxSIP 0 0 IN IP4 192.168.2.250
s=SIP Call
c=IN IP4 192.168.2.250
t=0 0
m=audio 51720 RTP/AVP 0 18 106 107 113 110 111 112 98 97 115
96 9 8 101
a=rtpmap:0 PCMU/8000
a=rtpmap:18 G729/8000
a=rtpmap:106 BV16/8000
a=rtpmap:107 BV32/16000
a=rtpmap:113 L16/16000
a=rtpmap:110 PCMU/16000
a=rtpmap:111 PCMA/16000
a=rtpmap:112 L16/8000
a=rtpmap:98 G726-16/8000
a=rtpmap:97 G726-24/8000
a=rtpmap:115 G726-32/8000
a=rtpmap:96 G726-40/8000
a=rtpmap:9 G722/8000
a=rtpmap:8 PCMA/8000
a=rtpmap:101 telephone-event/8000
a=silenceSupp:on - - - -
a=fmtp:18 annexb=yes
a=fmtp:101 0-15
a=ptime:30
a=sendrecv
08:34:57.545766 IP (tos 0x10, ttl 64, id 58136, offset 0, flags
[none], proto: UDP (17), length: 439) x.x.x.102.sip > x.x.x.199.31280:
SIP, length: 411
SIP/2.0 100 trying -- your call is important to us
Via: SIP/2.0/UDP
192.168.2.250:51620;branch=z9hG4bK1158b9f850c008ff7.6835b1eb6e3bffee5;rport=31280;received=x.x.x.199
From: "99999999"
<sip:99999999@r18.test-bwks.local:5060>;tag=1cf0b02fab
To: "9991" <sip:9991@r18.test-bwks.local:5060>
Call-ID: b2af8b83e20b0740
CSeq: 29663 INVITE
Server: kamailio (3.2.4 (x86_64/linux))
Content-Length: 0
08:34:57.547619 IP (tos 0x10, ttl 64, id 47936, offset 0, flags [+],
proto: UDP (17), length: 1500) 10.0.0.38.sip > 10.0.0.29.sip: SIP,
length: 1472
INVITE sip:9991@10.0.0.29 SIP/2.0
Record-Route: <sip:10.0.0.38;r2=on;lr=on;nat=yes>
Record-Route: <sip:x.x.x.102;r2=on;lr=on;nat=yes>
Via: SIP/2.0/UDP 10.0.0.38;branch=z9hG4bK4ed5.ec1e41a.0
Via: SIP/2.0/UDP
192.168.2.250:51620;rport=31280;received=x.x.x.199;branch=z9hG4bK1158b9f850c008ff7.6835b1eb6e3bffee5
Max-Forwards: 69
From: "99999999"
<sip:99999999@r18.test-bwks.local:5060>;tag=1cf0b02fab
To: "9991" <sip:9991@r18.test-bwks.local:5060>
Call-ID: b2af8b83e20b0740
CSeq: 29663 INVITE
Allow: INVITE, ACK, CANCEL, BYE, NOTIFY, REFER, OPTIONS,
UPDATE, PRACK, SUBSCRIBE, INFO
Allow-Events: talk, hold, conference, LocalModeStatus
Contact: "99999999"
<sip:99999999@x.x.x.199:31280;transport=udp;srcadr=192.168.2.250:5060>;+sip.instance="<urn:uuid:00000000-0000-1000-8000-00085D2DF3BB>"
Supported: gruu, path, timer, 100rel, replaces
User-Agent: Aastra 57i/2.6.0.1007
Content-Type: application/sdp
Content-Length: 629
v=0
o=MxSIP 0 0 IN IP4 10.0.0.38
s=SIP Call
c=IN IP4 10.0.0.38
t=0 0
m=audio 29682 RTP/AVP 0 18 106 107 113 110 111 112 98 97 115
96 9 8 101
a=rtpmap:0 PCMU/8000
a=rtpmap:18 G729/8000
a=rtpmap:106 BV16/8000
a=rtpmap:107 BV32/16000
a=rtpmap:113 L16/16000
a=rtpmap:110 PCMU/16000
a=rtpmap:111 PCMA/16000
a=rtpmap:112 L16/8000
a=rtpmap:98 G726-16/8000
a=rtpmap:97 G726-24/8000
a=rtpmap:115 G726-32/8000
a=rtpmap:96 G726-40/8000
a=rtpmap:9 G722/8000
a=rtpmap:8 PCMA/8000
a=rtpmap:101 telephone-event
08:34:57.551126 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF],
proto: UDP (17), length: 409) 10.0.0.29.55620 > 10.0.0.38.sip: SIP,
length: 381
SIP/2.0 100 Trying
Via:SIP/2.0/UDP
10.0.0.38;branch=z9hG4bK4ed5.ec1e41a.0,SIP/2.0/UDP
192.168.2.250:51620;received=x.x.x.199;branch=z9hG4bK1158b9f850c008ff7.6835b1eb6e3bffee5;rport=31280
From:"99999999"<sip:99999999@r18.test-bwks.local:5060>;tag=1cf0b02fab
To:"9991"<sip:9991@r18.test-bwks.local:5060>
Call-ID:b2af8b83e20b0740
CSeq:29663 INVITE
Content-Length:0
08:34:57.561084 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF],
proto: UDP (17), length: 723) 10.0.0.29.55620 > 10.0.0.38.sip: SIP,
length: 695
SIP/2.0 180 Ringing
Via:SIP/2.0/UDP
10.0.0.38;branch=z9hG4bK4ed5.ec1e41a.0,SIP/2.0/UDP
192.168.2.250:51620;received=x.x.x.199;branch=z9hG4bK1158b9f850c008ff7.6835b1eb6e3bffee5;rport=31280
From:"99999999"<sip:99999999@r18.test-bwks.local:5060>;tag=1cf0b02fab
To:"9991"<sip:9991@r18.test-bwks.local:5060>;tag=1693866893-1347366897367
Call-ID:b2af8b83e20b0740
CSeq:29663 INVITE
Supported:
Contact:<sip:10.0.0.29:5060>
Record-Route:<sip:10.0.0.38;r2=on;lr=on;nat=yes>,<sip:x.x.x.102;r2=on;lr=on;nat=yes>
P-Asserted-Identity:"Auto
Attendant"<sip:9991@10.0.0.29;user=phone>
Privacy:none
Allow:ACK,BYE,CANCEL,INFO,INVITE,OPTIONS,PRACK,REFER,NOTIFY,UPDATE
Content-Length:0
08:34:57.562404 IP (tos 0x10, ttl 64, id 58137, offset 0, flags
[none], proto: UDP (17), length: 672) x.x.x.102.sip > x.x.x.199.31280:
SIP, length: 644
SIP/2.0 180 Ringing
Via:SIP/2.0/UDP
192.168.2.250:51620;received=x.x.x.199;branch=z9hG4bK1158b9f850c008ff7.6835b1eb6e3bffee5;rport=31280
From:"99999999"<sip:99999999@r18.test-bwks.local:5060>;tag=1cf0b02fab
To:"9991"<sip:9991@r18.test-bwks.local:5060>;tag=1693866893-1347366897367
Call-ID:b2af8b83e20b0740
CSeq:29663 INVITE
Supported:
Contact:<sip:10.0.0.29:5060>
Record-Route:<sip:10.0.0.38;r2=on;lr=on;nat=yes>,<sip:x.x.x.102;r2=on;lr=on;nat=yes>
P-Asserted-Identity:"Auto
Attendant"<sip:9991@10.0.0.29;user=phone>
Privacy:none
Allow:ACK,BYE,CANCEL,INFO,INVITE,OPTIONS,PRACK,REFER,NOTIFY,UPDATE
Content-Length:0
08:34:57.609771 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF],
proto: UDP (17), length: 953) 10.0.0.29.55620 > 10.0.0.38.sip: SIP,
length: 925
SIP/2.0 200 OK
Via:SIP/2.0/UDP
10.0.0.38;branch=z9hG4bK4ed5.ec1e41a.0,SIP/2.0/UDP
192.168.2.250:51620;received=x.x.x.199;branch=z9hG4bK1158b9f850c008ff7.6835b1eb6e3bffee5;rport=31280
From:"99999999"<sip:99999999@r18.test-bwks.local:5060>;tag=1cf0b02fab
To:"9991"<sip:9991@r18.test-bwks.local:5060>;tag=1693866893-1347366897367
Call-ID:b2af8b83e20b0740
CSeq:29663 INVITE
Supported:
Contact:<sip:10.0.0.29:5060>
Record-Route:<sip:10.0.0.38;r2=on;lr=on;nat=yes>,<sip:x.x.x.102;r2=on;lr=on;nat=yes>
P-Asserted-Identity:"Auto
Attendant"<sip:9991@10.0.0.29;user=phone>
Privacy:none
Allow:ACK,BYE,CANCEL,INFO,INVITE,OPTIONS,PRACK,REFER,NOTIFY,UPDATE
Accept:application/media_control+xml,application/sdp,multipart/mixed
Content-Type:application/sdp
Content-Length:133
v=0
o=BroadWorks 196 1 IN IP4 10.0.0.24
s=-
c=IN IP4 10.0.0.24
t=0 0
m=audio 10498 RTP/AVP 0
a=rtpmap:0 PCMU/8000
a=ptime:20
08:34:57.612047 IP (tos 0x10, ttl 64, id 58138, offset 0, flags
[none], proto: UDP (17), length: 930) x.x.x.102.sip > x.x.x.199.31280:
SIP, length: 902
SIP/2.0 200 OK
Via:SIP/2.0/UDP
192.168.2.250:51620;received=x.x.x.199;branch=z9hG4bK1158b9f850c008ff7.6835b1eb6e3bffee5;rport=31280
From:"99999999"<sip:99999999@r18.test-bwks.local:5060>;tag=1cf0b02fab
To:"9991"<sip:9991@r18.test-bwks.local:5060>;tag=1693866893-1347366897367
Call-ID:b2af8b83e20b0740
CSeq:29663 INVITE
Supported:
Contact:<sip:10.0.0.29:5060>
Record-Route:<sip:10.0.0.38;r2=on;lr=on;nat=yes>,<sip:x.x.x.102;r2=on;lr=on;nat=yes>
P-Asserted-Identity:"Auto
Attendant"<sip:9991@10.0.0.29;user=phone>
Privacy:none
Allow:ACK,BYE,CANCEL,INFO,INVITE,OPTIONS,PRACK,REFER,NOTIFY,UPDATE
Accept:application/media_control+xml,application/sdp,multipart/mixed
Content-Type:application/sdp
Content-Length:161
v=0
o=BroadWorks 196 1 IN IP4 x.x.x.102
s=-
c=IN IP4 x.x.x.102
t=0 0
m=audio 29774 RTP/AVP 0
a=rtpmap:0 PCMU/8000
a=ptime:20
a=sdpmangled:yes
08:34:57.844645 IP (tos 0x0, ttl 49, id 3239, offset 0, flags [none],
proto: UDP (17), length: 506) x.x.x.199.31280 > x.x.x.102.sip: SIP,
length: 478
ACK sip:10.0.0.29:5060 SIP/2.0
Via: SIP/2.0/UDP
192.168.2.250:51620;branch=z9hG4bK15c3c5e900b3f6d36.26b037b92d0bba7c9
Route: <sip:x.x.x.102;r2=on;lr=on;nat=yes>,
<sip:10.0.0.38;r2=on;lr=on;nat=yes>
Max-Forwards: 70
From: "99999999"
<sip:99999999@r18.test-bwks.local:5060>;tag=1cf0b02fab
To: "9991"
<sip:9991@r18.test-bwks.local:5060>;tag=1693866893-1347366897367
Call-ID: b2af8b83e20b0740
CSeq: 29663 ACK
User-Agent: Aastra 57i/2.6.0.1007
Content-Length: 0
08:34:57.845182 IP (tos 0x10, ttl 64, id 47937, offset 0, flags
[none], proto: UDP (17), length: 509) 10.0.0.38.sip > 10.0.0.29.sip:
SIP, length: 481
ACK sip:10.0.0.29:5060 SIP/2.0
Via: SIP/2.0/UDP 10.0.0.38;branch=z9hG4bKcydzigwkX
Via: SIP/2.0/UDP
192.168.2.250:51620;rport=31280;received=x.x.x.199;branch=z9hG4bK15c3c5e900b3f6d36.26b037b92d0bba7c9
Max-Forwards: 69
From: "99999999"
<sip:99999999@r18.test-bwks.local:5060>;tag=1cf0b02fab
To: "9991"
<sip:9991@r18.test-bwks.local:5060>;tag=1693866893-1347366897367
Call-ID: b2af8b83e20b0740
CSeq: 29663 ACK
User-Agent: Aastra 57i/2.6.0.1007
Content-Length: 0
-------------------------------------------------------------------------------
The call session is up at this point.
CPE Router, Source NAT IP x.x.x.199, Internal Network: 192.168.2.0/24
192.168.2.250 is an Aastra 6757i IP Phone, behind the
x.x.x.102 is the external interface on our SIP proxy allowing traffic on:
Inbound: port 5060/udp
Inbound: range 16384 - 32768/udp
10.0.0.38 is the internal interface facing our BroadWorks lab
cluster
10.0.0.29 is the internal interface of our BroadWorks
Application Server
10.0.0.24 is the internal interface of our BroadWorks Media
Server
RTP Proxy has been spawned with the following command line arguments:
/usr/bin/rtpproxy -p /var/run/rtpproxy.pid -u rtpproxy \
-u root \
-s udp:localhost:7722 \
-l x.x.x.102/10.0.0.38 \
-d DBUG LOG_LOCAL5 \
-m 16384 -M 32768
We've changed the /etc/kamailio/kamailio.cfg and added the #!define's
at the top of the
configuration file:
#!define WITH_NAT
#!define WITH_DEBUG
In the route[NATMANAGE] { } block we've added a few additional lines
to handle the setup
of the rtpproxy_manage() function which handles the rtpproxy_offer(),
rtpproxy_answer()
and unforce_rtp_proxy() convientenly in one function.
The logic we've got in place currently is:
if ((src_ip =~ "10\.0\.0\.*") && (dst_ip =~
"10\.0\.0\.*")) {
xlog("L_INFO", "Media session for ($ci) with source
address ($si): Internal > External: SDP contact/origin will be
x.x.x.102");
rtpproxy_manage("FAIEOC", "x.x.x.102");
} else if (!(src_ip =~ "10\.0\.0\.*") && (dst_ip == x.x.x.102)) {
xlog("L_INFO", "Media session for ($ci) with source
address ($si): External > Internal: SDP contact/origin will be
10.0.0.38");
rtpproxy_manage("FAEIOC", "10.0.0.38");
} else {
xlog("L_INFO", "!!! Uncaught condition for media session
for ($ci) with source address ($si) !!!");
}
This rtpproxy log is not from the call above, but the same source #,
destination # were used:
Sep 11 08:50:27 sip-proxy1 rtpproxy[3101]: INFO:handle_command: new
session 84bf2a7cb9d4ab24, tag dcfa6a860e;1 requested, type strong
Sep 11 08:50:27 sip-proxy1 rtpproxy[3101]: INFO:handle_command: new
session on a port 28282 created, tag dcfa6a860e;1
Sep 11 08:50:27 sip-proxy1 rtpproxy[3101]: INFO:handle_command:
pre-filling caller's address with 192.168.2.250:51720
Sep 11 08:50:27 sip-proxy1 rtpproxy[3101]: INFO:handle_command: lookup
on ports 28282/22500, session timer restarted
Sep 11 08:50:27 sip-proxy1 rtpproxy[3101]: INFO:handle_command:
pre-filling callee's address with 10.0.0.24:10502
... Call is currently active and then hung-up ...
Sep 11 08:51:28 sip-proxy1 rtpproxy[3101]: INFO:process_rtp: session
timeout
Sep 11 08:51:28 sip-proxy1 rtpproxy[3101]: INFO:remove_session: RTP
stats: 0 in from callee, 0 in from caller, 0 relayed, 0 dropped
Sep 11 08:51:28 sip-proxy1 rtpproxy[3101]: INFO:remove_session: RTCP
stats: 0 in from callee, 0 in from caller, 0 relayed, 0 dropped
Sep 11 08:51:28 sip-proxy1 rtpproxy[3101]: INFO:remove_session:
session on ports 28282/22500 is cleaned up
Example of the RTP:
08:53:13.555834 IP (tos 0x0, ttl 48, id 510, offset 0, flags [none],
proto: UDP (17), length: 200) x.x.x.199.32052 > x.x.x.102.16552: UDP,
length 172
x.x.x.199:32052 > x.x.x.102:16552
Why is this packet not being forwarded to the media proxy
(rtpproxy) to 10.0.0.24 (specified in the 200 OK from the
BroadWorks Application Server)
08:53:13.562206 IP (tos 0x10, ttl 64, id 0, offset 0, flags [DF],
proto: UDP (17), length: 200) 10.0.0.24.10504 > 10.0.0.38.17968: UDP,
length 172
10.0.0.24:10504 > 10.0.0.38:17968
Why is this packet not being forwarded from rtpproxy to the
UAC at x.x.x.199?
-------------------------------------------------------------------------------
System details:
-------------------------------------------------------------------------------
OS: CentOS 5.8 x86-64, Hypervisor is qemu-kvm
Memory: 2GB
Disk: 40G
VCPU: 1
/etc/sysctl.conf:
# Controls IP packet forwarding
net.ipv4.ip_forward = 1
-------------------------------------------------------------------------------
Current software versions:
-------------------------------------------------------------------------------
[root@sip-proxy1 kamailio]# rpm -qa | grep -E 'kamailio|rtpproxy' |
xargs rpm -qi
Name : rtpproxy Relocations: (not relocatable)
Version : 1.2.1 Vendor: Fedora Project
Release : 2.el5 Build Date: Sun 19 Sep
2010 08:12:23 AM EDT
Install Date: Mon 10 Sep 2012 09:23:28 PM EDT Build Host:
x86-10.phx2.fedoraproject.org
Group : Applications/Internet Source RPM:
rtpproxy-1.2.1-2.el5.src.rpm
Size : 105682 License: BSD
Signature : DSA/SHA1, Mon 20 Sep 2010 12:40:46 PM EDT, Key ID
119cc036217521f6
Packager : Fedora Project
URL : http://www.rtpproxy.org
Summary : A symmetric RTP proxy
Description :
This is symmetric RTP proxy designed to be used in conjunction with
the SIP Express Router (SER) or any other SIP proxy capable of
rewriting SDP bodies in SIP messages that it processes.
Name : kamailio Relocations: (not relocatable)
Version : 3.2.4 Vendor: kamailio.org
Release : 1.1 Build Date: Fri 03 Aug
2012 05:14:14 AM EDT
Install Date: Tue 11 Sep 2012 08:22:32 AM EDT Build Host: build08
Group : Productivity/Telephony/SIP/Servers Source RPM:
kamailio-3.2.4-1.1.src.rpm
Size : 10200784 License: GPL
Signature : DSA/SHA1, Fri 03 Aug 2012 05:14:38 AM EDT, Key ID
c9a75909941fdbdd
Packager : Daniel-Constantin Mierla <miconda(a)gmail.com>
URL : http://kamailio.org/
Summary : Kamailio, very fast, reliable and flexible SIP Server
Description :
Kamailio is a very fast, reliable and flexible SIP (RFC3261)
proxy server. Written entirely in C, kamailio can handle thousands calls
per second even on low-budget hardware. A C Shell like scripting language
provides full control over the server's behaviour. It's modular
architecture allows only required functionality to be loaded.
Among available features: IPv4, IPv6, digest authentication, accounting,
CPL scripts, instant messaging, MySQL and UNIXODBC support, SIMPLE
presence
agent, radius authentication, record routing, SMS gateway, ENUM, UDP,
TCP,
TLS and SCTP, transaction and dialog module, OSP module, statistics
support,
registrar and user location, SNMP, SIMPLE Presence and Perl programming
interface.
Name : kamailio-cpl Relocations: (not relocatable)
Version : 3.2.4 Vendor: kamailio.org
Release : 1.1 Build Date: Fri 03 Aug
2012 05:14:14 AM EDT
Install Date: Tue 11 Sep 2012 08:22:33 AM EDT Build Host: build08
Group : Productivity/Telephony/SIP/Servers Source RPM:
kamailio-3.2.4-1.1.src.rpm
Size : 296947 License: GPL
Signature : DSA/SHA1, Fri 03 Aug 2012 05:14:38 AM EDT, Key ID
c9a75909941fdbdd
Packager : Daniel-Constantin Mierla <miconda(a)gmail.com>
URL : http://kamailio.org/
Summary : CPL module (CPL interpreter engine) for Kamailio
Description :
The kamailio-cpl package provides a CPL interpreter engine for Kamailio
_______________________________________________
SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
sr-users(a)lists.sip-router.org
http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
--
Daniel-Constantin Mierla - http://www.asipto.com
http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
Kamailio Advanced Training, Berlin, Nov 5-8, 2012 - http://asipto.com/u/kat
Kamailio Advanced Training, Miami, USA, Nov 12-14, 2012 - http://asipto.com/u/katu
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1 comments
2 participants
participants (2)
-
Daniel-Constantin Mierla -
Russell McConnachie