It turns out that the record route field should not be sent in the 200ok,
and that the proxy server will provide this.
Once I removed this field, the issue was resolved.
Thanks for your help, Svetla!
Snehal
On 1/26/07, Svetla Verma <[EMAIL PROTECTED]> wrote:
Just checked ur msg content.
One problem might be there, not sure though.
Ur Cseq number field in 200 ok is different than others. cseq signifies
transaction and since its in the same invite transaction it ought to be
same.
it should be same as the cseq field of 100 and 180.
the proxy got 200 ok but could not associate it with the ongoing
transaction. thats y it timed out and sent you cancel (for proxy dialog
its still an early dialog).
Correct CSeq in 200 ok msg and try ur call again.
Regards,
Svetla
Snehal Chudgar wrote:
> I have a transaction which is failing. My SIP Client is Registering
> with our SIP Proxy Server. Then a call is placed to the Client via the
> proxy. An INVITE is received, and responded to by the SIP client with
> a 100 Trying, 180 Ringing, and a 200 OK. However, no ACK is received.
> Instead, the client times out on receipt of the 200 OK, and sends a
> CANCEL. I believe there may be something in my SIP messaging that the
> Proxy Server does not like.
>
> Is there anything wrong with my SIP Client messaging that perhaps does
> not follow spec?
>
> Please help!
>
> Thanks.
>
> Snehal Chudgar
>
> *a) Sip Client registers with proxy*
>
> REGISTER sip:wcbs.gsiv.com <http://wcbs.gsiv.com> SIP/2.0 Via:
> SIP/2.0/UDP 166.34.72.198:5060
> <http://166.34.72.198:5060>;branch=z9hG4bK9d10128a68416221
> From: < sip:[EMAIL PROTECTED]
> <mailto:sip:[EMAIL PROTECTED]>;user=phone>;tag=9463176-933
> To: <sip:[EMAIL PROTECTED] <mailto:sip:[EMAIL PROTECTED]>;user=phone>
> Date: Thu, 25 Jan 07 16:02:35 GMT
> Contact: <sip:[EMAIL PROTECTED]
> :5060;user=phone;transport=udp>;expires=3600
> Call-ID: [EMAIL PROTECTED]
> <mailto:[EMAIL PROTECTED]>
> CSeq: 101 REGISTER
> Allow: ACK, BYE, CANCEL, INVITE, NOTIFY, OPTIONS, REFER, REGISTER,
> PRACK, UPDATE
> Content-Length: 0
>
>
>
> *b) Proxy returns 401 (Standard procedure) *
>
> SIP/2.0 401 Unauthorized Via: SIP/2.0/UDP 166.34.72.198:5060
> <http://166.34.72.198:5060>;branch=z9hG4bK9d10128a68416221
> From: <sip:[EMAIL PROTECTED] <mailto:sip:[EMAIL PROTECTED]>
> ;user=phone>;tag=9463176-933
> To: <sip:[EMAIL PROTECTED] <mailto:sip:[EMAIL PROTECTED]>;user=phone>
> Call-ID: [EMAIL PROTECTED]
> <mailto:[EMAIL PROTECTED]>
> CSeq: 101 REGISTER
> WWW-Authenticate: DIGEST realm="wcbs.gsiv.com
> <http://wcbs.gsiv.com
>",qop="auth",algorithm=MD5,nonce="BroadWorksXexddka4rTfjq0uBW"
> Content-Length: 0
>
>
>
> *c) Sip Client registers with proxy (2nd time, standard)*
>
> REGISTER sip:wcbs.gsiv.com <http://wcbs.gsiv.com> SIP/2.0 Via:
> SIP/2.0/UDP 166.34.72.198:5060
> <http://166.34.72.198:5060>;branch=z9hG4bK9d10128a68416221
> From: < sip:[EMAIL PROTECTED]
> <mailto:sip:[EMAIL PROTECTED]>;user=phone>;tag=9463176-933
> To: <sip:[EMAIL PROTECTED] <mailto:sip:[EMAIL PROTECTED]>;user=phone>
> Date: Thu, 25 Jan 07 16:02:36 GMT
> Expires: 3600
> Contact: <
> sip:[EMAIL PROTECTED]:5060;user=phone;transport=udp>;expires=3600
> Call-ID: [EMAIL PROTECTED]
> <mailto:[EMAIL PROTECTED]>
> CSeq: 102 REGISTER
> Allow: ACK, BYE, CANCEL, INVITE, NOTIFY, OPTIONS, REFER, REGISTER,
> PRACK, UPDATE
> Authorization: Digest username="wcbssub0",realm="wcbs.gsiv.com
> <http://wcbs.gsiv.com>",nonce="BroadWorksXexddka4rTfjq0uBW",uri="sip:
> wcbs.gsiv.com
> <http://wcbs.gsiv.com>",response="9ad0f631c5d25638ec7ee0ab1493dcc9"
> Content-Length: 0
>
>
>
> *d) Proxy returns 200 OK (Phone is now registered) *
> **
>
> SIP/2.0 200 OK Via: SIP/2.0/UDP 166.34.72.198:5060
> <http://166.34.72.198:5060>;branch=z9hG4bK9d10128a68416221
> From: <sip:[EMAIL PROTECTED]
> <mailto:sip:[EMAIL PROTECTED]>;user=phone>;tag=9463176-933
> To: <sip:[EMAIL PROTECTED] <mailto:sip:[EMAIL PROTECTED]>;user=phone>
> Call-ID: [EMAIL PROTECTED]
> <mailto:[EMAIL PROTECTED]>
> CSeq: 102 REGISTER
> Contact:
> <sip:[EMAIL PROTECTED]:5060;user=phone;transport=udp>;q=0.5
;expires=3599
> Content-Length: 0
>
>
>
> *e) Proxy sends INVITE to SIP Client (Original INVITE from a SIP
> automated call dispatch server) *
>
> INVITE sip:[EMAIL PROTECTED]:5060;user=phone;transport=udp SIP/2.0
> Via: SIP/2.0/UDP 166.34.87.10
> <http://166.34.87.10>;branch=
z9hG4bK-BroadWorks.166.34.87.10-166.34.72.198V5060-0-754940757-189420817-1169740986025
> -
> From: "MSIP"<sip:[EMAIL PROTECTED]
> <mailto:sip:[EMAIL PROTECTED]
>;user=phone>;tag=189420817-1169740986025-
> To: "Wcbssub0 Webcenter"< sip:[EMAIL PROTECTED]
> <mailto:sip:[EMAIL PROTECTED]>>
> Call-ID: [EMAIL PROTECTED]
> <mailto:[EMAIL PROTECTED]>
> CSeq: 754940757 INVITE
> Contact: <sip: 166.34.87.10:5060 <http://166.34.87.10:5060>>
> Diversion: <sip:[EMAIL PROTECTED]
> <mailto:sip:[EMAIL PROTECTED]
>;user=phone>;reason=unknown;counter=1
> Allow: ACK,BYE,CANCEL,INFO,INVITE,OPTIONS,PRACK,REFER,UPDATE,NOTIFY
> Supported:
> Accept: multipart/mixed,application/sdp
> Max-Forwards: 10
> Content-Type: application/sdp
> Content-Length: 168
>
> v=0
> o=BroadWorks 32748 1 IN IP4 166.34.93.50 <http://166.34.93.50>
> s=-
> c=IN IP4 166.34.93.50 <http://166.34.93.50>
> t=0 0
> m=audio 54452 RTP/AVP 0 101
> a=rtpmap:0 PCMU/8000
> a=rtpmap:101 telephone-event/8000
>
>
>
> *f) SIP Client responds with 100 Trying *
>
> SIP/2.0 100 Trying Via: SIP/2.0/UDP 166.34.87.10
> <http://166.34.87.10>;branch=
z9hG4bK-BroadWorks.166.34.87.10-166.34.72.198V5060-0-754940757-189420817-1169740986025
-
> From: "MSIP"< sip:[EMAIL PROTECTED]
> <mailto:sip:[EMAIL PROTECTED]
>;user=phone>;tag=189420817-1169740986025-
> To: "Wcbssub0 Webcenter"<sip:[EMAIL PROTECTED]
> <mailto:sip:[EMAIL PROTECTED]>>;tag=271237-386
> Date: Thu, 25 Jan 07 10:03:06 GMT
> Call-ID: [EMAIL PROTECTED]
> <mailto:[EMAIL PROTECTED]>
> Timestamp: 1003420811
> Server: Cisco-SIPGateway/IOS-12.x
> CSeq: 754940757 INVITE
> Content-Length: 0
>
>
>
> *g) SIP Client responds with 180 Ringing *
>
> SIP/2.0 180 Ringing Via: SIP/2.0/UDP 166.34.87.10
> <http://166.34.87.10>;branch=
z9hG4bK-BroadWorks.166.34.87.10-166.34.72.198V5060-0-754940757-189420817-1169740986025
-
> From: "MSIP"< sip:[EMAIL PROTECTED]
> <mailto:sip:[EMAIL PROTECTED]
>;user=phone>;tag=189420817-1169740986025-
> To: "Wcbssub0 Webcenter"<sip:[EMAIL PROTECTED]
> <mailto:sip:[EMAIL PROTECTED]>>;tag=271237-386
> Date: Thu, 25 Jan 07 10:03:06 GMT
> Call-ID: [EMAIL PROTECTED]
> <mailto:[EMAIL PROTECTED]>
> Timestamp: 969032164
> Server: Cisco-SIPGateway/IOS-12.x
> CSeq: 754940757 INVITE
> Content-Type: application/sdp
> Content-Disposition: session;handling=required
> Contact: <sip:[EMAIL PROTECTED] <mailto:sip:[EMAIL PROTECTED]>>
> Content-Length: 235
>
> v=0
> o=CiscoSystemsSIP-GW-UserAgent 6196 5254 IN IP4 166.34.72.198
> <http://166.34.72.198>
> s=SIP Call
> c=IN IP4 166.34.72.198 <http://166.34.72.198>
> t=0 0
> m=audio 18430 RTP/AVP 18 0 98
> a=rtpmap:18 G729/8000
> a=rtpmap:0 PCMU/8000
> a=rtpmap:98 telephone-event/8000
> a=fmtp:98 0-15
>
>
>
> *h) SIP Client responds with 200 OK (which the Proxy never sends ACK
> in resposne to)*
>
> SIP/2.0 200 OK Via: SIP/2.0/UDP 166.34.87.10
> <http://166.34.87.10>;branch=
z9hG4bK-BroadWorks.166.34.87.10-166.34.72.198V5060-0-754940757-189420817-1169740986025
-
> From: "MSIP"< sip:[EMAIL PROTECTED]
> <mailto:sip:[EMAIL PROTECTED]
>;user=phone>;tag=189420817-1169740986025-
> To: "Wcbssub0 Webcenter"<sip:[EMAIL PROTECTED]
> <mailto:sip:[EMAIL PROTECTED]>>;tag=271237-386
> Date: Thu, 25 Jan 07 10:03:06 GMT
> Call-ID: [EMAIL PROTECTED]
> <mailto:[EMAIL PROTECTED]>
> Timestamp: 969032164
> Server: Cisco-SIPGateway/IOS-12.x
> CSeq: 101 INVITE
> Contact: < sip:[EMAIL PROTECTED] <mailto:sip:[EMAIL PROTECTED]>>
> Content-Type: application/sdp
> Record-Route: <sip:[EMAIL PROTECTED] <mailto:sip:[EMAIL PROTECTED]>>
> Content-Length: 236
>
> v=0
> o=CiscoSystemsSIP-GW-UserAgent 6196 5254 IN IP4 166.34.72.198
> <http://166.34.72.198>
> s=SIP Call
> c=IN IP4 166.34.72.198 <http://166.34.72.198>
> t=0 0
> m=audio 2354 RTP/AVP 18 0 98
> a=rtpmap:18 G729/8000
> a=rtpmap:0 PCMU/8000
> a=rtpmap:98 telephone-event/8000
> a=fmtp:98 0-15
>
> **
> **
> *Expected ACK to establish the call is Never Received, and the Proxy
> times out.*
>
> *i) Proxy server sends CANCEL to SIP Client (after timing out)*
>
> CANCEL sip:[EMAIL PROTECTED]:5060;user=phone;transport=udp SIP/2.0
> Via: SIP/2.0/UDP 166.34.87.10
> <http://166.34.87.10>;branch=
z9hG4bK-BroadWorks.166.34.87.10-166.34.72.198V5060-0-754940757-189420817-1169740986025
> -
> From: "MSIP"<sip:[EMAIL PROTECTED]
> <mailto:sip:[EMAIL PROTECTED]
>;user=phone>;tag=189420817-1169740986025-
> To: "Wcbssub0 Webcenter"< sip:[EMAIL PROTECTED]
> <mailto:sip:[EMAIL PROTECTED]>>
> Call-ID: [EMAIL PROTECTED]
> <mailto:[EMAIL PROTECTED]>
> CSeq: 754940757 CANCEL
> Max-Forwards: 10
> Content-Length: 0
>
>------------------------------------------------------------------------
>
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--
Regards,
Snehal Chudgar
Performance Engineering Group
Verizon Business, Inc.
(GCI, Inc.)
GCI Office: (813) 979-4557 ext. 239
Verizon Office: (813) 978-6962
Mobile: (813) 843-3431
Email: [EMAIL PROTECTED]
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