[SR-Users] ACK problem with FreeSwitch-Kamailio SBC implementation.

Mon Jan 17 21:22:29 CET 2011

Hello.

I was wondering if someone can help me with some problem that I’m having
with the combination of FreeSwitch and Kamailio as SBC.

I’m having and ACK not routed by kamailio and dropped.

Here is the debug.

100.100.100.211:5060 : Kamailio

100.100.100.211:5090 : FreeSwitch

100.100.100.108 : Caller

100.100.100.212 : Calle

User Datagram Protocol, Src Port: 42772 (42772), Dst Port: sip (5060)

Session Initiation Protocol

    Request-Line: INVITE
sip:02131234 at 100.100.100.211<sip%3A02131234 at 100.100.100.211>SIP/2.0

        Method: INVITE

        [Resent Packet: False]

    Message Header

        Via: SIP/2.0/UDP 64.76.148.108:42772
;branch=z9hG4bK-d8754z-da0b2e4b1b5d0843-1---d8754z-;rport

        Max-Forwards: 70

        Contact: <sip:1234 at 64.76.148.108:42772>

        To: <sip:02131234 at 100.100.100.211 <sip%3A02131234 at 100.100.100.211>>

        From: "camila"<sip:1234 at 100.100.100.211 <sip%3A1234 at 100.100.100.211>
>;tag=8422566b

        Call-ID: MjY2NDY5NTE3OTk4MzdmMjE0YWQxNWQ4MWFmY2JhMWQ.

        CSeq: 1 INVITE

        Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, NOTIFY, MESSAGE,
SUBSCRIBE, INFO

        Content-Type: application/sdp

        User-Agent: Bria release 2.2 stamp 45414

        Content-Length: 388

    Message Body

        Session Description Protocol

User Datagram Protocol, Src Port: sip (5060), Dst Port: 42772 (42772)

Session Initiation Protocol

    Status-Line: SIP/2.0 100 trying -- your call is important to us

        Status-Code: 100

        [Resent Packet: False]

    Message Header

        Via: SIP/2.0/UDP 64.76.148.108:42772
;branch=z9hG4bK-d8754z-da0b2e4b1b5d0843-1---d8754z-;rport=42772

        To: <sip:02131234 at 100.100.100.211 <sip%3A02131234 at 100.100.100.211>>

        From: "camila"<sip:1234 at 100.100.100.211 <sip%3A1234 at 100.100.100.211>
>;tag=8422566b

        Call-ID: MjY2NDY5NTE3OTk4MzdmMjE0YWQxNWQ4MWFmY2JhMWQ.

        CSeq: 1 INVITE

        Server: kamailio (3.1.1 (i386/linux))

        Content-Length: 0

User Datagram Protocol, Src Port: sip (5060), Dst Port: sip (5060)

Session Initiation Protocol

    Request-Line: INVITE sip:3031234 at 100.100.100.212:5060 SIP/2.0

        Method: INVITE

        [Resent Packet: False]

    Message Header

        Record-Route: <sip:100.100.100.211;lr=on>

        Via: SIP/2.0/UDP 100.100.100.211;branch=z9hG4bK3916.41fc6fb3.0

        Via: SIP/2.0/UDP 100.100.100.211:5090
;rport=5090;branch=z9hG4bK1QH1XDH609cUm

        Max-Forwards: 66

        From: "camila" <sip:1234 at 100.100.100.211<sip%3A1234 at 100.100.100.211>
>;tag=QmrB15eKrQ3Bj

        To: <sip:02131234 at 100.100.100.211 <sip%3A02131234 at 100.100.100.211>>

        Call-ID: 54a74b6a-9cf6-122e-05a0-0050bad00883

        CSeq: 7304076 INVITE

        Contact: <sip:mod_sofia at 100.100.100.211:5090>

        User-Agent: FreeSWITCH-mod_sofia/1.0.head-git-d41e649 2011-01-11
12-25-55 -0600

        Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, UPDATE, INFO,
REFER, NOTIFY, PUBLISH, SUBSCRIBE

        Supported: timer, precondition, path, replaces

        Allow-Events: talk, hold, presence, dialog, line-seize, call-info,
sla, include-session-description, presence.winfo, message-summary, refer

        Content-Type: application/sdp

        Content-Disposition: session

        Content-Length: 200

        X-FS-Support: update_display

        Remote-Party-ID: "camila"
<sip:1234 at 100.100.100.211<sip%3A1234 at 100.100.100.211>
>;party=calling;screen=yes;privacy=off

    Message Body

        Session Description Protocol

User Datagram Protocol, Src Port: sip (5060), Dst Port: sip (5060)

Session Initiation Protocol

    Status-Line: SIP/2.0 100 Trying

        Status-Code: 100

        [Resent Packet: False]

    Message Header

        Via: SIP/2.0/UDP
100.100.100.211;branch=z9hG4bK3916.41fc6fb3.0;received=100.100.100.211

        Via: SIP/2.0/UDP 100.100.100.211:5090
;rport=5090;branch=z9hG4bK1QH1XDH609cUm

        Record-Route: <sip:100.100.100.211;lr=on>

        From: "camila" <sip:1234 at 100.100.100.211<sip%3A1234 at 100.100.100.211>
>;tag=QmrB15eKrQ3Bj

        To: <sip:02131234 at 100.100.100.211 <sip%3A02131234 at 100.100.100.211>>

        Call-ID: 54a74b6a-9cf6-122e-05a0-0050bad00883

        CSeq: 7304076 INVITE

        Server: Thirdlane

        Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY,
INFO

        Supported: replaces, timer

        Require: timer

        Session-Expires: 1800;refresher=uas

        Contact: <sip:3031234 at 100.100.100.212<sip%3A3031234 at 100.100.100.212>
>

        Content-Length: 0

User Datagram Protocol, Src Port: sip (5060), Dst Port: sip (5060)

Session Initiation Protocol

    Status-Line: SIP/2.0 200 OK

        Status-Code: 200

        [Resent Packet: False]

    Message Header

        Via: SIP/2.0/UDP
100.100.100.211;branch=z9hG4bK3916.41fc6fb3.0;received=100.100.100.211

        Via: SIP/2.0/UDP 100.100.100.211:5090
;rport=5090;branch=z9hG4bK1QH1XDH609cUm

        Record-Route: <sip:100.100.100.211;lr=on>

        From: "camila" <sip:1234 at 100.100.100.211<sip%3A1234 at 100.100.100.211>
>;tag=QmrB15eKrQ3Bj

        To: <sip:02131234 at 100.100.100.211 <sip%3A02131234 at 100.100.100.211>
>;tag=as6727124a

        Call-ID: 54a74b6a-9cf6-122e-05a0-0050bad00883

        CSeq: 7304076 INVITE

        Server: Thirdlane

        Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY,
INFO

        Supported: replaces, timer

        Require: timer

        Session-Expires: 1800;refresher=uas

        Contact: <sip:3031234 at 100.100.100.212<sip%3A3031234 at 100.100.100.212>
>

        Content-Type: application/sdp

        Content-Length: 239

    Message Body

        Session Description Protocol

User Datagram Protocol, Src Port: sip (5060), Dst Port: sip (5060)

Session Initiation Protocol

    Request-Line: ACK
sip:3031234 at 100.100.100.212<sip%3A3031234 at 100.100.100.212>SIP/2.0

        Method: ACK

        [Resent Packet: False]

    Message Header

        Record-Route: <sip:100.100.100.211;lr=on>

        Via: SIP/2.0/UDP 100.100.100.211;branch=0

        Via: SIP/2.0/UDP 100.100.100.211:5090
;rport=5090;branch=z9hG4bK20atZ819Xj3Dg

        Max-Forwards: 69

        From: "camila" <sip:1234 at 100.100.100.211<sip%3A1234 at 100.100.100.211>
>;tag=QmrB15eKrQ3Bj

        To: <sip:02131234 at 100.100.100.211 <sip%3A02131234 at 100.100.100.211>
>;tag=as6727124a

        Call-ID: 54a74b6a-9cf6-122e-05a0-0050bad00883

        CSeq: 7304076 ACK

        Contact: <sip:mod_sofia at 100.100.100.211:5090>

        Content-Length: 0

User Datagram Protocol, Src Port: sip (5060), Dst Port: 42772 (42772)

Session Initiation Protocol

    Status-Line: SIP/2.0 200 OK

        Status-Code: 200

        [Resent Packet: False]

    Message Header

        Via: SIP/2.0/UDP 64.76.148.108:42772
;branch=z9hG4bK-d8754z-da0b2e4b1b5d0843-1---d8754z-;rport=42772

        Record-Route: <sip:100.100.100.211;lr=on>

        From: "camila" <sip:1234 at 100.100.100.211<sip%3A1234 at 100.100.100.211>
>;tag=8422566b

        To: <sip:02131234 at 100.100.100.211 <sip%3A02131234 at 100.100.100.211>
>;tag=pBZjZayFUeDSp

        Call-ID: MjY2NDY5NTE3OTk4MzdmMjE0YWQxNWQ4MWFmY2JhMWQ.

        CSeq: 1 INVITE

        Contact: <sip:02131234 at 100.100.100.211:5090;transport=udp>

        User-Agent: FreeSWITCH-mod_sofia/1.0.head-git-d41e649 2011-01-11
12-25-55 -0600

        Accept: application/sdp

        Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, UPDATE, INFO,
REFER, NOTIFY, PUBLISH, SUBSCRIBE

        Supported: timer, precondition, path, replaces

        Allow-Events: talk, hold, presence, dialog, line-seize, call-info,
sla, include-session-description, presence.winfo, message-summary, refer

        Content-Type: application/sdp

        Content-Disposition: session

        Content-Length: 249

        Remote-Party-ID: "Outbound Call"
<sip:02131234 at 100.100.100.211<sip%3A02131234 at 100.100.100.211>
>;party=calling;privacy=off;screen=no

    Message Body

        Session Description Protocol

User Datagram Protocol, Src Port: 42772 (42772), Dst Port: sip (5060)

Session Initiation Protocol

    Request-Line: ACK sip:02131234 at 100.100.100.211:5090;transport=udp
SIP/2.0

        Method: ACK

        [Resent Packet: False]

    Message Header

        Via: SIP/2.0/UDP 64.76.148.108:42772
;branch=z9hG4bK-d8754z-182d537bcb534165-1---d8754z-;rport

        Max-Forwards: 70

        Route: <sip:100.100.100.211;lr>

        Contact: <sip:1234 at 64.76.148.108:42772>

        To: <sip:02131234 at 100.100.100.211 <sip%3A02131234 at 100.100.100.211>
>;tag=pBZjZayFUeDSp

        From: "camila"<sip:1234 at 100.100.100.211 <sip%3A1234 at 100.100.100.211>
>;tag=8422566b

        Call-ID: MjY2NDY5NTE3OTk4MzdmMjE0YWQxNWQ4MWFmY2JhMWQ.

        CSeq: 1 ACK

        User-Agent: Bria release 2.2 stamp 45414

        Content-Length: 0

User Datagram Protocol, Src Port: sip (5060), Dst Port: 42772 (42772)

Session Initiation Protocol

    Status-Line: SIP/2.0 200 OK

        Status-Code: 200

        [Resent Packet: True]

        [Suspected resend of frame: 7]

    Message Header

        Via: SIP/2.0/UDP 64.76.148.108:42772
;branch=z9hG4bK-d8754z-da0b2e4b1b5d0843-1---d8754z-;rport=42772

        Record-Route: <sip:100.100.100.211;lr=on>

        From: "camila" <sip:1234 at 100.100.100.211<sip%3A1234 at 100.100.100.211>
>;tag=8422566b

        To: <sip:02131234 at 100.100.100.211 <sip%3A02131234 at 100.100.100.211>
>;tag=pBZjZayFUeDSp

        Call-ID: MjY2NDY5NTE3OTk4MzdmMjE0YWQxNWQ4MWFmY2JhMWQ.

        CSeq: 1 INVITE

        Contact: <sip:02131234 at 100.100.100.211:5090;transport=udp>

        User-Agent: FreeSWITCH-mod_sofia/1.0.head-git-d41e649 2011-01-11
12-25-55 -0600

        Accept: application/sdp

        Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, UPDATE, INFO,
REFER, NOTIFY, PUBLISH, SUBSCRIBE

        Supported: timer, precondition, path, replaces

        Allow-Events: talk, hold, presence, dialog, line-seize, call-info,
sla, include-session-description, presence.winfo, message-summary, refer

        Content-Type: application/sdp

        Content-Disposition: session

        Content-Length: 249

        Remote-Party-ID: "Outbound Call"
<sip:02131234 at 100.100.100.211<sip%3A02131234 at 100.100.100.211>
>;party=calling;privacy=off;screen=no

    Message Body

        Session Description Protocol

When I removed Freeswitch from the path the ACK is routed ok.

The ACK is routed by loose_route, but then it fails because the

if ( t_check_trans() ) {

What could be happening?

* *

*Regards,*

*Ricardo.-*
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