[OpenSER-Users] Loop Detection

Tue Dec 11 02:35:22 CET 2007

This isn't the answer I was looking for :)
I'm going to try and see if I can turn off loop detection on my porta
system.

-Daniel

On Dec 10, 2007 8:05 PM, Alex Balashov <abalashov at evaristesys.com> wrote:

>
> No, because OpenSER, by definition, is not a user agent, but a proxy, and
> only user agents generate call legs.
>
> There may be a way to fudge it by mangling all the appropriate SIP
> header features, but it would be almost ontologically contradictory.  :-)
>
> I ran into this myself trying to loop back calls into a MetaSwitch
> with some dialed-digit transformations.  Ended up having to use a B2BUA
> like Asterisk.
>
> On Mon, 10 Dec 2007, Daniel Corbe wrote:
>
> > Is there a way to generate a new call leg in openser?
> >
> > On Dec 10, 2007 7:03 PM, Alex Balashov <abalashov at evaristesys.com>
> wrote:
> >
> >>
> >>
> >> And probably a new call-ID as well.  In other words, you'd probably
> need
> >> all the logical elements of a distinct call leg, per the RFC;  the
> source
> >> of application you'd want to use a back-to-back user agent for if you
> >> weren't using OpenSER.
> >>
> >>
> >> On Mon, 10 Dec 2007, Daniel Corbe wrote:
> >>
> >>> I have a problem.  I'm taking INVITES from a PortaSIP proxy and
> handing
> >> it
> >>> back with a new request URI and To: header; however, their loop
> >>> detection algorithm is calling this a loop.
> >>> Is there a way to fix this from within OpenSER?  I'm assuming my proxy
> >> would
> >>> have to send an INVITE with a completely new branch tag and From tag?
> >>>
> >>> 10 Dec 14:52:30.831/GLOBAL/b2bua: SENDING message to
> 206.71.169.114:5060
> >> :
> >>> INVITE sip:*94310 at 206.71.169.114:5060 SIP/2.0
> >>> Via: SIP/2.0/UDP 216.151.143.69:5061
> >>> ;branch=z9hG4bKecaee2770d3db1e3a26ddc741511b55b;rport
> >>> Max-Forwards: 70
> >>> From: <sip:18589520696 at 216.151.143.69
> >>> ;tag=3b383c39c2bc93d8106f4425074ef399
> >>> To: <sip:*94310 at 206.71.169.114>
> >>> Call-ID: 722814-3406315950-714741 at msx69.mydomain.com~1o
> >>> CSeq: 200 INVITE
> >>> Contact: Anonymous <sip:216.151.143.69:5061>
> >>> Expires: 300
> >>> User-Agent: Sippy
> >>> cisco-GUID: 2108088383-2809270748-2290810900-572575638
> >>> h323-conf-id: 2108088383-2809270748-2290810900-572575638
> >>> Content-Length: 201
> >>> Content-Type: application/sdp
> >>> v=0
> >>> o=Sippy 156402124 0 IN IP4 216.151.143.69
> >>> s=sip call
> >>> t=0 0
> >>> m=audio 42486 RTP/AVP 18 0 8
> >>> c=IN IP4 216.151.143.77
> >>> a=rtpmap:8 PCMA/8000
> >>> a=rtpmap:0 PCMU/8000
> >>> a=rtpmap:18 G729/8000
> >>> a=sendrecv
> >>>
> >>> 10 Dec 14:52:30.841/GLOBAL/b2bua: RECEIVED message from
> >> 206.71.169.114:5060:
> >>> SIP/2.0 100 Giving a try
> >>> Via: SIP/2.0/UDP 216.151.143.69:5061
> >>> ;branch=z9hG4bKecaee2770d3db1e3a26ddc741511b55b;rport=5061
> >>> From: <sip:18589520696 at 216.151.143.69
> >>> ;tag=3b383c39c2bc93d8106f4425074ef399
> >>> To: <sip:*94310 at 206.71.169.114>
> >>> Call-ID: 722814-3406315950-714741 at msx69.mydomain.com~1o
> >>> CSeq: 200 INVITE
> >>> Server: OpenSER (1.2.2-notls (i386/freebsd))
> >>> Content-Length: 0
> >>>
> >>> 10 Dec 14:52:30.842/GLOBAL/ser[69804]: RECEIVED message from
> >>> 206.71.169.114:5060:
> >>> INVITE sip:1a10000000009 at 216.151.143.69:5060 SIP/2.0
> >>> Record-Route: <sip:206.71.169.114
> >>> ;lr=on;ftag=3b383c39c2bc93d8106f4425074ef399;did=fad.a2f4eb52>
> >>> Via: SIP/2.0/UDP 206.71.169.114;branch=z9hG4bK961c.41ea57a.0
> >>> Via: SIP/2.0/UDP 216.151.143.69:5061
> >>> ;branch=z9hG4bKecaee2770d3db1e3a26ddc741511b55b;rport=5061
> >>> Max-Forwards: 69
> >>> From: <sip:18589520696 at 216.151.143.69
> >>> ;tag=3b383c39c2bc93d8106f4425074ef399
> >>> To: <sip:1a10000000009 at 216.151.143.69:5060>
> >>> Call-ID: 722814-3406315950-714741 at msx69.mydomain.com~1o
> >>> CSeq: 200 INVITE
> >>> Contact: Anonymous <sip:216.151.143.69:5061>
> >>> Expires: 300
> >>> User-Agent: Sippy
> >>> cisco-GUID: 2108088383-2809270748-2290810900-572575638
> >>> h323-conf-id: 2108088383-2809270748-2290810900-572575638
> >>> Content-Length: 201
> >>> Content-Type: application/sdp
> >>> P-hint: rr-enforced
> >>> v=0
> >>> o=Sippy 156402124 0 IN IP4 216.151.143.69
> >>> s=sip call
> >>> t=0 0
> >>> m=audio 42486 RTP/AVP 18 0 8
> >>> c=IN IP4 216.151.143.77
> >>> a=rtpmap:8 PCMA/8000
> >>> a=rtpmap:0 PCMU/8000
> >>> a=rtpmap:18 G729/8000
> >>> a=sendrecv
> >>>
> >>> 10 Dec 14:52:30.842/722814-3406315950-714741 at msx69.mydomain.com
> >> ~1o/ser[69804]:
> >>> processing INVITE received from 206.71.169.114
> >>> 10 Dec 14:52:30.843/GLOBAL/ser[69804]: SENDING message to
> >>> 206.71.169.114:5060:
> >>> SIP/2.0 100 trying -- your call is important to us
> >>> Via: SIP/2.0/UDP 206.71.169.114;branch=z9hG4bK961c.41ea57a.0
> >>> Via: SIP/2.0/UDP 216.151.143.69:5061
> >>> ;branch=z9hG4bKecaee2770d3db1e3a26ddc741511b55b;rport=5061
> >>> From: <sip:18589520696 at 216.151.143.69
> >>> ;tag=3b383c39c2bc93d8106f4425074ef399
> >>> To: <sip:1a10000000009 at 216.151.143.69:5060>
> >>> Call-ID: 722814-3406315950-714741 at msx69.mydomain.com~1o
> >>> CSeq: 200 INVITE
> >>> Server: Sip EXpress router (0.9.6 (i386/freebsd))
> >>> Content-Length: 0
> >>>
> >>> 10 Dec 14:52:30.844/GLOBAL/ser[69804]: SENDING message to
> >>> 216.151.143.69:5061:
> >>> INVITE sip:1a10000000009 at 216.151.143.69:5061 SIP/2.0
> >>> Record-Route: <sip:216.151.143.69
> >> ;ftag=3b383c39c2bc93d8106f4425074ef399;lr>
> >>> Record-Route: <sip:206.71.169.114
> >>> ;lr=on;ftag=3b383c39c2bc93d8106f4425074ef399;did=fad.a2f4eb52>
> >>> Via: SIP/2.0/UDP 216.151.143.69;branch=
> >>> z9hG4bK961c.003d31266db19cfeb34aa550d186a976.0
> >>> Via: SIP/2.0/UDP 206.71.169.114;branch=z9hG4bK961c.41ea57a.0
> >>> Via: SIP/2.0/UDP 216.151.143.69:5061
> >>> ;branch=z9hG4bKecaee2770d3db1e3a26ddc741511b55b;rport=5061
> >>> Max-Forwards: 16
> >>> From: <sip:18589520696 at 216.151.143.69
> >>> ;tag=3b383c39c2bc93d8106f4425074ef399
> >>> To: <sip:1a10000000009 at 216.151.143.69:5060>
> >>> Call-ID: 722814-3406315950-714741 at msx69.mydomain.com~1o
> >>> CSeq: 200 INVITE
> >>> Contact: Anonymous <sip:216.151.143.69:5061>
> >>> Expires: 300
> >>> User-Agent: Sippy
> >>> cisco-GUID: 2108088383-2809270748-2290810900-572575638
> >>> Content-Length: 201
> >>> Content-Type: application/sdp
> >>> P-hint: rr-enforced
> >>> v=0
> >>> o=Sippy 156402124 0 IN IP4 216.151.143.69
> >>> s=sip call
> >>> t=0 0
> >>> m=audio 42486 RTP/AVP 18 0 8
> >>> c=IN IP4 216.151.143.77
> >>> a=rtpmap:8 PCMA/8000
> >>> a=rtpmap:0 PCMU/8000
> >>> a=rtpmap:18 G729/8000
> >>> a=sendrecv
> >>>
> >>> 10 Dec 14:52:30.844/GLOBAL/b2bua: RECEIVED message from
> >> 216.151.143.69:5060:
> >>> INVITE sip:1a10000000009 at 216.151.143.69:5061 SIP/2.0
> >>> Record-Route: <sip:216.151.143.69
> >> ;ftag=3b383c39c2bc93d8106f4425074ef399;lr>
> >>> Record-Route: <sip:206.71.169.114
> >>> ;lr=on;ftag=3b383c39c2bc93d8106f4425074ef399;did=fad.a2f4eb52>
> >>> Via: SIP/2.0/UDP 216.151.143.69;branch=
> >>> z9hG4bK961c.003d31266db19cfeb34aa550d186a976.0
> >>> Via: SIP/2.0/UDP 206.71.169.114;branch=z9hG4bK961c.41ea57a.0
> >>> Via: SIP/2.0/UDP 216.151.143.69:5061
> >>> ;branch=z9hG4bKecaee2770d3db1e3a26ddc741511b55b;rport=5061
> >>> Max-Forwards: 16
> >>> From: <sip:18589520696 at 216.151.143.69
> >>> ;tag=3b383c39c2bc93d8106f4425074ef399
> >>> To: <sip:1a10000000009 at 216.151.143.69:5060>
> >>> Call-ID: 722814-3406315950-714741 at msx69.mydomain.com~1o
> >>> CSeq: 200 INVITE
> >>> Contact: Anonymous <sip:216.151.143.69:5061>
> >>> Expires: 300
> >>> User-Agent: Sippy
> >>> cisco-GUID: 2108088383-2809270748-2290810900-572575638
> >>> Content-Length: 201
> >>> Content-Type: application/sdp
> >>> P-hint: rr-enforced
> >>> v=0
> >>> o=Sippy 156402124 0 IN IP4 216.151.143.69
> >>> s=sip call
> >>> t=0 0
> >>> m=audio 42486 RTP/AVP 18 0 8
> >>> c=IN IP4 216.151.143.77
> >>> a=rtpmap:8 PCMA/8000
> >>> a=rtpmap:0 PCMU/8000
> >>> a=rtpmap:18 G729/8000
> >>> a=sendrecv
> >>>
> >>> 10 Dec 14:52:30.847/GLOBAL/b2bua: SENDING message to
> 216.151.143.69:5060
> >> :
> >>> SIP/2.0 482 Loop Detected
> >>> Via: SIP/2.0/UDP 216.151.143.69;branch=
> >>> z9hG4bK961c.003d31266db19cfeb34aa550d186a976.0
> >>> Via: SIP/2.0/UDP 206.71.169.114;branch=z9hG4bK961c.41ea57a.0
> >>> Via: SIP/2.0/UDP 216.151.143.69:5061
> >>> ;branch=z9hG4bKecaee2770d3db1e3a26ddc741511b55b;rport=5061
> >>> Record-Route: <sip:216.151.143.69
> >> ;ftag=3b383c39c2bc93d8106f4425074ef399;lr>
> >>> Record-Route: <sip:206.71.169.114
> >>> ;lr=on;ftag=3b383c39c2bc93d8106f4425074ef399;did=fad.a2f4eb52>
> >>> From: <sip:18589520696 at 216.151.143.69
> >>> ;tag=3b383c39c2bc93d8106f4425074ef399
> >>> To: <sip:1a10000000009 at 216.151.143.69:5060>
> >>> Call-ID: 722814-3406315950-714741 at msx69.mydomain.com~1o
> >>> CSeq: 200 INVITE
> >>> Server: Sippy
> >>>
> >>
> >> --
> >> Alex Balashov
> >> Evariste Systems
> >> Web    : http://www.evaristesys.com/
> >> Tel    : +1-678-954-0670
> >> Direct : +1-678-954-0671
> >>
> >
>
> --
> Alex Balashov
> Evariste Systems
> Web    : http://www.evaristesys.com/
> Tel    : +1-678-954-0670
> Direct : +1-678-954-0671
>
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