'[Devel] Structure of "487" and "200 Ok" reponses to CANCEL request'

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List:       openser-devel
Subject:    [Devel] Structure of "487" and "200 Ok" reponses to CANCEL request
From:       daniel () voice-system ! ro (Daniel-Constantin Mierla)
Date:       2005-09-25 16:12:29
Message-ID: 4336B15E.1030800 () voice-system ! ro
[Download RAW message or body]

Hello,

as you can see, the To tag in the reply of cancel is the same as for 
reply of invite (is what RFC requires):

#
U 2005/09/21 17:39:05.087157 OPENSER_PROXY:15061 -> CISCO_7960G:5060
SIP/2.0 487 Request Terminated.
Via: SIP/2.0/UDP 192.168.99.240:5060;branch=z9hG4bK18c9da3d;rport=5060;received=CISCO_7960G.

From: "200110005333" \
                <sip:200110005333@OPENSER_PROXY>;tag=00055e7cd6f3000a26d9cb28-5233e4dc.

To: <sip:6046946333@OPENSER_PROXY>;tag=b54f4643ca25bcc9aa0b46a4d2d34c01-1176.
Call-ID: 00055e7c-d6f30008-58153022-29e9cb0a@192.168.99.240.
CSeq: 102 INVITE.
Content-Length: 0.
.

#
U 2005/09/21 17:39:05.087486 OPENSER_PROXY:15061 -> CISCO_7960G:5060
SIP/2.0 200 ok -- no more pending branches.
Via: SIP/2.0/UDP 192.168.99.240:5060;branch=z9hG4bK18c9da3d;rport=5060;received=CISCO_7960G.

From: "200110005333" \
                <sip:200110005333@OPENSER_PROXY>;tag=00055e7cd6f3000a26d9cb28-5233e4dc.

To: <sip:6046946333@OPENSER_PROXY>;tag=b54f4643ca25bcc9aa0b46a4d2d34c01-1176.
Call-ID: 00055e7c-d6f30008-58153022-29e9cb0a@192.168.99.240.
CSeq: 102 CANCEL.
Content-Length: 0.

There should be something else that the CISCO_7960G does not like. Do you have access \
to the CISCO box, could you get some debug messages there? Is there a NAT between \
cisco and openser?

Cheers,
Daniel

On 09/21/05 20:49, Tavis P wrote:

> ngrep trace attached
> 
> I'm running the CVS HEAD version of OpenSER, checked out last week
> 
> Again i'm not certain that this is the problem, however it was the 
> only issue i could find
> 
> Thanks!
> Tavis
> 
> 
> Daniel-Constantin Mierla wrote:
> 
> > Hello,
> > 
> > coud you post the network grep for such situation? Be aware that 487 
> > is for initial INVITE while the 200 is for CANCEL. Also, in this 
> > case, the UA has to ACK the 487, not the 200.
> > 
> > An the snippet you posted from RFC states that the reply for initial 
> > INVITE and the reply for the CANCEL should have the same To tag. Are 
> > you experiencing something else (I am not able to do a test right 
> > now, so, if you can post some network traces, would really help to 
> > get you a faster respose).
> > 
> > To make it a bit clear, 487 is the response for the original request.
> > 
> > Cheers,
> > Daniel
> > 
> > On 09/15/05 23:27, reticent wrote:
> > 
> > > Recently a feature was added to OpenSER where it would work around 
> > > most UACs lack of implementing section 9.1 of RFC3261 (which states 
> > > "If no provisional response has been received, the CANCEL request 
> > > MUST NOT be sent;) in that it would wait for the second hop entity 
> > > to repond to the INVITE request before generating a CANCEL request 
> > > and sending it on.
> > > 
> > > I'm working with a Cisco 7960 sw-ver7.5 and i'm experiencing some 
> > > issues regarding the "487" and "200 ok" response to the CANCEL 
> > > message sent before SER receives a provisional response from the 
> > > second hop routing entity.
> > > SER sends the 487 and than the 200 ok but the cisco 7960 does not 
> > > acknowlege the 200 ok with an ACK.
> > > Reading RFC3261 i found the section that describes the behaviour of 
> > > the UAS (SER) in this situation and the recommended behaviour isn't 
> > > followed by SER, which is (Section 9.2): "Regardless of the method 
> > > of the original request, as long as the CANCEL matched an existing 
> > > transaction, the UAS answers the CANCEL request itself with a 200 
> > > (OK) response. This response is constructed following the procedures 
> > > described in Section 8.2.6 noting that the To tag of the response to 
> > > the CANCEL and the To tag in the response to the original request 
> > > SHOULD be the same. The response to CANCEL is passed to the server 
> > > transaction for transmission."
> > > 
> > > In the response (487 and 200 ok) SER generates and adds a "tag=" 
> > > argument to the "To:" header function where the response to the 
> > > original request did not have that tag.
> > > 
> > > Now i don't know if this is an issue(as, in the spec, it is a 
> > > SHOULD, not a MUST), but i am having a problem with the interaction 
> > > and came across this in the specification so i thought i would 
> > > mention it here.
> > > 
> > > 
> > > tavis
> > > 
> > > _______________________________________________
> > > Devel mailing list
> > > Devel@openser.org
> > > http://openser.org/cgi-bin/mailman/listinfo/devel
> > > 
> > 
> > 
> 
> ------------------------------------------------------------------------
> 
> #
> U 2005/09/21 17:39:04.311092 CISCO_7960G:5060 -> OPENSER_PROXY:15061
> INVITE sip:6046946333@OPENSER_PROXY SIP/2.0.
> Via: SIP/2.0/UDP 192.168.99.240:5060;branch=z9hG4bK6f5f85cf.
> From: "200110005333" \
>                 <sip:200110005333@OPENSER_PROXY>;tag=00055e7cd6f3000a26d9cb28-5233e4dc.
>                 
> To: <sip:6046946333@OPENSER_PROXY>.
> Call-ID: 00055e7c-d6f30008-58153022-29e9cb0a@192.168.99.240.
> Max-Forwards: 70.
> CSeq: 101 INVITE.
> User-Agent: Cisco-CP7960G/7.5.
> Contact: <sip:200110005333@192.168.99.240:5060>.
> Expires: 180.
> Accept: application/sdp.
> Allow: ACK,BYE,CANCEL,INVITE,NOTIFY,OPTIONS,REFER,REGISTER,UPDATE.
> Supported: replaces.
> Content-Length: 259.
> Content-Type: application/sdp.
> Content-Disposition: session;handling=optional.
> .
> v=0.
> o=Cisco-SIPUA 19523 0 IN IP4 192.168.99.240.
> s=SIP Call.
> t=0 0.
> m=audio 20214 RTP/AVP 18 0 8 101.
> c=IN IP4 192.168.99.240.
> a=rtpmap:18 G729/8000.
> a=rtpmap:0 PCMU/8000.
> a=rtpmap:8 PCMA/8000.
> a=rtpmap:101 telephone-event/8000.
> a=fmtp:101 0-15.
> a=sendrecv.
> 
> #
> U 2005/09/21 17:39:04.312048 OPENSER_PROXY:15061 -> CISCO_7960G:5060
> SIP/2.0 407 Proxy Authentication Required.
> Via: SIP/2.0/UDP 192.168.99.240:5060;branch=z9hG4bK6f5f85cf;rport=5060;received=CISCO_7960G.
>                 
> From: "200110005333" \
>                 <sip:200110005333@OPENSER_PROXY>;tag=00055e7cd6f3000a26d9cb28-5233e4dc.
>                 
> To: <sip:6046946333@OPENSER_PROXY>;tag=688bd636d693eb2ab143ccbaf0db2c7a.1ba1.
> Call-ID: 00055e7c-d6f30008-58153022-29e9cb0a@192.168.99.240.
> CSeq: 101 INVITE.
> Proxy-Authenticate: Digest realm="REALM", \
>                 nonce="43319be43102b29c922e8cdf5e5c7571b8dc8e4f", qop="auth".
> Content-Length: 0.
> .
> 
> #
> U 2005/09/21 17:39:04.448981 CISCO_7960G:5060 -> OPENSER_PROXY:15061
> ACK sip:6046946333@OPENSER_PROXY SIP/2.0.
> Via: SIP/2.0/UDP 192.168.99.240:5060;branch=z9hG4bK6f5f85cf.
> From: "200110005333" \
>                 <sip:200110005333@OPENSER_PROXY>;tag=00055e7cd6f3000a26d9cb28-5233e4dc.
>                 
> To: <sip:6046946333@OPENSER_PROXY>;tag=688bd636d693eb2ab143ccbaf0db2c7a.1ba1.
> Call-ID: 00055e7c-d6f30008-58153022-29e9cb0a@192.168.99.240.
> CSeq: 101 ACK.
> Content-Length: 0.
> .
> 
> #
> U 2005/09/21 17:39:04.503595 CISCO_7960G:5060 -> OPENSER_PROXY:15061
> INVITE sip:6046946333@OPENSER_PROXY SIP/2.0.
> Via: SIP/2.0/UDP 192.168.99.240:5060;branch=z9hG4bK18c9da3d.
> From: "200110005333" \
>                 <sip:200110005333@OPENSER_PROXY>;tag=00055e7cd6f3000a26d9cb28-5233e4dc.
>                 
> To: <sip:6046946333@OPENSER_PROXY>.
> Call-ID: 00055e7c-d6f30008-58153022-29e9cb0a@192.168.99.240.
> Max-Forwards: 70.
> CSeq: 102 INVITE.
> User-Agent: Cisco-CP7960G/7.5.
> Contact: <sip:200110005333@192.168.99.240:5060>.
> Proxy-Authorization: Digest \
> username="200110005333",realm="REALM",uri="sip:6046946333@OPENSER_PROXY",response="d \
> 27eef4bb17d1331c422bf0fde7795ea",nonce="43319be43102b29c922e8cdf5e5c7571b8dc8e4f",cnonce="004226c8",qop=auth,nc=00000001,algorithm=md5.
>                 
> Expires: 180.
> Content-Length: 259.
> Content-Type: application/sdp.
> Content-Disposition: session;handling=optional.
> .
> v=0.
> o=Cisco-SIPUA 19523 0 IN IP4 192.168.99.240.
> s=SIP Call.
> t=0 0.
> m=audio 20214 RTP/AVP 18 0 8 101.
> c=IN IP4 192.168.99.240.
> a=rtpmap:18 G729/8000.
> a=rtpmap:0 PCMU/8000.
> a=rtpmap:8 PCMA/8000.
> a=rtpmap:101 telephone-event/8000.
> a=fmtp:101 0-15.
> a=sendrecv.
> 
> #
> U 2005/09/21 17:39:04.542205 OPENSER_PROXY:15061 -> CISCO_7960G:5060
> SIP/2.0 100 trying -- your call is important to us.
> Via: SIP/2.0/UDP 192.168.99.240:5060;branch=z9hG4bK18c9da3d;rport=5060;received=CISCO_7960G.
>                 
> From: "200110005333" \
>                 <sip:200110005333@OPENSER_PROXY>;tag=00055e7cd6f3000a26d9cb28-5233e4dc.
>                 
> To: <sip:6046946333@OPENSER_PROXY>.
> Call-ID: 00055e7c-d6f30008-58153022-29e9cb0a@192.168.99.240.
> CSeq: 102 INVITE.
> Content-Length: 0.
> .
> 
> #
> U 2005/09/21 17:39:05.072915 CISCO_7960G:5060 -> OPENSER_PROXY:15061
> CANCEL sip:6046946333@OPENSER_PROXY SIP/2.0.
> Via: SIP/2.0/UDP 192.168.99.240:5060;branch=z9hG4bK18c9da3d.
> From: "200110005333" \
>                 <sip:200110005333@OPENSER_PROXY>;tag=00055e7cd6f3000a26d9cb28-5233e4dc.
>                 
> To: <sip:6046946333@OPENSER_PROXY>.
> Call-ID: 00055e7c-d6f30008-58153022-29e9cb0a@192.168.99.240.
> Max-Forwards: 70.
> CSeq: 102 CANCEL.
> User-Agent: Cisco-CP7960G/7.5.
> Content-Length: 0.
> Proxy-Authorization: Digest \
> username="200110005333",realm="REALM",uri="sip:6046946333@OPENSER_PROXY",response="3 \
> cd189668fa7abeddbca8e095b814ba5",nonce="43319be43102b29c922e8cdf5e5c7571b8dc8e4f",cnonce="4b1d9cab",qop=auth,nc=00000002,algorithm=md5.
>                 
> .
> 
> #
> U 2005/09/21 17:39:05.087157 OPENSER_PROXY:15061 -> CISCO_7960G:5060
> SIP/2.0 487 Request Terminated.
> Via: SIP/2.0/UDP 192.168.99.240:5060;branch=z9hG4bK18c9da3d;rport=5060;received=CISCO_7960G.
>                 
> From: "200110005333" \
>                 <sip:200110005333@OPENSER_PROXY>;tag=00055e7cd6f3000a26d9cb28-5233e4dc.
>                 
> To: <sip:6046946333@OPENSER_PROXY>;tag=b54f4643ca25bcc9aa0b46a4d2d34c01-1176.
> Call-ID: 00055e7c-d6f30008-58153022-29e9cb0a@192.168.99.240.
> CSeq: 102 INVITE.
> Content-Length: 0.
> .
> 
> #
> U 2005/09/21 17:39:05.087486 OPENSER_PROXY:15061 -> CISCO_7960G:5060
> SIP/2.0 200 ok -- no more pending branches.
> Via: SIP/2.0/UDP 192.168.99.240:5060;branch=z9hG4bK18c9da3d;rport=5060;received=CISCO_7960G.
>                 
> From: "200110005333" \
>                 <sip:200110005333@OPENSER_PROXY>;tag=00055e7cd6f3000a26d9cb28-5233e4dc.
>                 
> To: <sip:6046946333@OPENSER_PROXY>;tag=b54f4643ca25bcc9aa0b46a4d2d34c01-1176.
> Call-ID: 00055e7c-d6f30008-58153022-29e9cb0a@192.168.99.240.
> CSeq: 102 CANCEL.
> Content-Length: 0.
> .
> 
> #
> U 2005/09/21 17:39:05.333532 OPENSER_PROXY:15061 -> CISCO_7960G:5060
> SIP/2.0 487 Request Terminated.
> Via: SIP/2.0/UDP 192.168.99.240:5060;branch=z9hG4bK18c9da3d;rport=5060;received=CISCO_7960G.
>                 
> From: "200110005333" \
>                 <sip:200110005333@OPENSER_PROXY>;tag=00055e7cd6f3000a26d9cb28-5233e4dc.
>                 
> To: <sip:6046946333@OPENSER_PROXY>;tag=b54f4643ca25bcc9aa0b46a4d2d34c01-1176.
> Call-ID: 00055e7c-d6f30008-58153022-29e9cb0a@192.168.99.240.
> CSeq: 102 INVITE.
> Content-Length: 0.
> .
> 
> #
> U 2005/09/21 17:39:07.337396 OPENSER_PROXY:15061 -> CISCO_7960G:5060
> SIP/2.0 487 Request Terminated.
> Via: SIP/2.0/UDP 192.168.99.240:5060;branch=z9hG4bK18c9da3d;rport=5060;received=CISCO_7960G.
>                 
> From: "200110005333" \
>                 <sip:200110005333@OPENSER_PROXY>;tag=00055e7cd6f3000a26d9cb28-5233e4dc.
>                 
> To: <sip:6046946333@OPENSER_PROXY>;tag=b54f4643ca25bcc9aa0b46a4d2d34c01-1176.
> Call-ID: 00055e7c-d6f30008-58153022-29e9cb0a@192.168.99.240.
> CSeq: 102 INVITE.
> Content-Length: 0.
> .
> 
> #
> U 2005/09/21 17:39:11.347149 OPENSER_PROXY:15061 -> CISCO_7960G:5060
> SIP/2.0 487 Request Terminated.
> Via: SIP/2.0/UDP 192.168.99.240:5060;branch=z9hG4bK18c9da3d;rport=5060;received=CISCO_7960G.
>                 
> From: "200110005333" \
>                 <sip:200110005333@OPENSER_PROXY>;tag=00055e7cd6f3000a26d9cb28-5233e4dc.
>                 
> To: <sip:6046946333@OPENSER_PROXY>;tag=b54f4643ca25bcc9aa0b46a4d2d34c01-1176.
> Call-ID: 00055e7c-d6f30008-58153022-29e9cb0a@192.168.99.240.
> CSeq: 102 INVITE.
> Content-Length: 0.
> .
> 
> #
> U 2005/09/21 17:39:15.355907 OPENSER_PROXY:15061 -> CISCO_7960G:5060
> SIP/2.0 487 Request Terminated.
> Via: SIP/2.0/UDP 192.168.99.240:5060;branch=z9hG4bK18c9da3d;rport=5060;received=CISCO_7960G.
>                 
> From: "200110005333" \
>                 <sip:200110005333@OPENSER_PROXY>;tag=00055e7cd6f3000a26d9cb28-5233e4dc.
>                 
> To: <sip:6046946333@OPENSER_PROXY>;tag=b54f4643ca25bcc9aa0b46a4d2d34c01-1176.
> Call-ID: 00055e7c-d6f30008-58153022-29e9cb0a@192.168.99.240.
> CSeq: 102 INVITE.
> Content-Length: 0.
> .
> 
> #
> U 2005/09/21 17:39:19.363655 OPENSER_PROXY:15061 -> CISCO_7960G:5060
> SIP/2.0 487 Request Terminated.
> Via: SIP/2.0/UDP 192.168.99.240:5060;branch=z9hG4bK18c9da3d;rport=5060;received=CISCO_7960G.
>                 
> From: "200110005333" \
>                 <sip:200110005333@OPENSER_PROXY>;tag=00055e7cd6f3000a26d9cb28-5233e4dc.
>                 
> To: <sip:6046946333@OPENSER_PROXY>;tag=b54f4643ca25bcc9aa0b46a4d2d34c01-1176.
> Call-ID: 00055e7c-d6f30008-58153022-29e9cb0a@192.168.99.240.
> CSeq: 102 INVITE.
> Content-Length: 0.
> .
> 
> #
> U 2005/09/21 17:39:23.372400 OPENSER_PROXY:15061 -> CISCO_7960G:5060
> SIP/2.0 487 Request Terminated.
> Via: SIP/2.0/UDP 192.168.99.240:5060;branch=z9hG4bK18c9da3d;rport=5060;received=CISCO_7960G.
>                 
> From: "200110005333" \
>                 <sip:200110005333@OPENSER_PROXY>;tag=00055e7cd6f3000a26d9cb28-5233e4dc.
>                 
> To: <sip:6046946333@OPENSER_PROXY>;tag=b54f4643ca25bcc9aa0b46a4d2d34c01-1176.
> Call-ID: 00055e7c-d6f30008-58153022-29e9cb0a@192.168.99.240.
> CSeq: 102 INVITE.
> Content-Length: 0.
> .
> 
> #
> U 2005/09/21 17:39:27.380151 OPENSER_PROXY:15061 -> CISCO_7960G:5060
> SIP/2.0 487 Request Terminated.
> Via: SIP/2.0/UDP 192.168.99.240:5060;branch=z9hG4bK18c9da3d;rport=5060;received=CISCO_7960G.
>                 
> From: "200110005333" \
>                 <sip:200110005333@OPENSER_PROXY>;tag=00055e7cd6f3000a26d9cb28-5233e4dc.
>                 
> To: <sip:6046946333@OPENSER_PROXY>;tag=b54f4643ca25bcc9aa0b46a4d2d34c01-1176.
> Call-ID: 00055e7c-d6f30008-58153022-29e9cb0a@192.168.99.240.
> CSeq: 102 INVITE.
> Content-Length: 0.
> .
> 
> #
> U 2005/09/21 17:39:31.387904 OPENSER_PROXY:15061 -> CISCO_7960G:5060
> SIP/2.0 487 Request Terminated.
> Via: SIP/2.0/UDP 192.168.99.240:5060;branch=z9hG4bK18c9da3d;rport=5060;received=CISCO_7960G.
>                 
> From: "200110005333" \
>                 <sip:200110005333@OPENSER_PROXY>;tag=00055e7cd6f3000a26d9cb28-5233e4dc.
>                 
> To: <sip:6046946333@OPENSER_PROXY>;tag=b54f4643ca25bcc9aa0b46a4d2d34c01-1176.
> Call-ID: 00055e7c-d6f30008-58153022-29e9cb0a@192.168.99.240.
> CSeq: 102 INVITE.
> Content-Length: 0.
> .
> 
> ##
> U 2005/09/21 17:39:35.397666 OPENSER_PROXY:15061 -> CISCO_7960G:5060
> SIP/2.0 487 Request Terminated.
> Via: SIP/2.0/UDP 192.168.99.240:5060;branch=z9hG4bK18c9da3d;rport=5060;received=CISCO_7960G.
>                 
> From: "200110005333" \
>                 <sip:200110005333@OPENSER_PROXY>;tag=00055e7cd6f3000a26d9cb28-5233e4dc.
>                 
> To: <sip:6046946333@OPENSER_PROXY>;tag=b54f4643ca25bcc9aa0b46a4d2d34c01-1176.
> Call-ID: 00055e7c-d6f30008-58153022-29e9cb0a@192.168.99.240.
> CSeq: 102 INVITE.
> Content-Length: 0.
> .
> 
> #
> U 2005/09/21 17:39:39.405407 OPENSER_PROXY:15061 -> CISCO_7960G:5060
> SIP/2.0 487 Request Terminated.
> Via: SIP/2.0/UDP 192.168.99.240:5060;branch=z9hG4bK18c9da3d;rport=5060;received=CISCO_7960G.
>                 
> From: "200110005333" \
>                 <sip:200110005333@OPENSER_PROXY>;tag=00055e7cd6f3000a26d9cb28-5233e4dc.
>                 
> To: <sip:6046946333@OPENSER_PROXY>;tag=b54f4643ca25bcc9aa0b46a4d2d34c01-1176.
> Call-ID: 00055e7c-d6f30008-58153022-29e9cb0a@192.168.99.240.
> CSeq: 102 INVITE.
> Content-Length: 0.
> .
> 
> #
> U 2005/09/21 17:39:43.414173 OPENSER_PROXY:15061 -> CISCO_7960G:5060
> SIP/2.0 487 Request Terminated.
> Via: SIP/2.0/UDP 192.168.99.240:5060;branch=z9hG4bK18c9da3d;rport=5060;received=CISCO_7960G.
>                 
> From: "200110005333" \
>                 <sip:200110005333@OPENSER_PROXY>;tag=00055e7cd6f3000a26d9cb28-5233e4dc.
>                 
> To: <sip:6046946333@OPENSER_PROXY>;tag=b54f4643ca25bcc9aa0b46a4d2d34c01-1176.
> Call-ID: 00055e7c-d6f30008-58153022-29e9cb0a@192.168.99.240.
> CSeq: 102 INVITE.
> Content-Length: 0.
> .
> 
> #
> U 2005/09/21 17:39:47.422910 OPENSER_PROXY:15061 -> CISCO_7960G:5060
> SIP/2.0 487 Request Terminated.
> Via: SIP/2.0/UDP 192.168.99.240:5060;branch=z9hG4bK18c9da3d;rport=5060;received=CISCO_7960G.
>                 
> From: "200110005333" \
>                 <sip:200110005333@OPENSER_PROXY>;tag=00055e7cd6f3000a26d9cb28-5233e4dc.
>                 
> To: <sip:6046946333@OPENSER_PROXY>;tag=b54f4643ca25bcc9aa0b46a4d2d34c01-1176.
> Call-ID: 00055e7c-d6f30008-58153022-29e9cb0a@192.168.99.240.
> CSeq: 102 INVITE.
> Content-Length: 0.
> .
> 
> 
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