[Users] Receiving different VIA in INVITE and CANCEL

Wed Feb 8 13:38:32 CET 2006

Hi Bogdan,

I will try the force_rport().

Meanwhile I am confused by what you wrote. Can you please clarify?
> The problem is the different port in via. The "via1_matching" 
> param has no effect on RFC3261 transaction matching algorithm 
> since this is entirely based on via :).

thanks a lot

George

> -----Original Message-----
> From: Bogdan-Andrei Iancu [mailto:bogdan at voice-system.ro] 
> Sent: Wednesday, February 08, 2006 11:43 AM
> To: Papadopoulos Georgios
> Cc: users at openser.org
> Subject: Re: [Users] Receiving different VIA in INVITE and CANCEL
> 
> Hi Geroge,
> 
> it looks like your device uses STUN to perform nat traversal  
> (the callid has a private IP). The improper nat traversal via 
> STUN is the reason for the different port in VIA; to fix 
> this, call "force_rport()" 
> in the beginning of your script for all requests.
> 
> now, going back to the CANCEL matching....SIPURA uses the 
> RFC3261 transaction matching algorithm (based on some cookie 
> and ids stored in branch VIA param. These are matching in 
> your case, but openser uses as additional checkings the via 
> host, port and proto (just to be sure that the originator 
> matches too to avoid confusion with different senders 
> generating the same cookie/id).
> The problem is the different port in via. The "via1_matching" 
> param has no effect on RFC3261 transaction matching algorithm 
> since this is entirely based on via :).
> 
> my suggestion is to fix the nat traversal part.
> 
> regards,
> bogdan
> 
> Papadopoulos Georgios wrote:
> 
> >Hi Bogdan,
> >
> >Thank you for your reply. 
> >
> >I used
> >modparam("tm", "via1_matching", 0)
> >modparam("tm", "ruri_matching", 0)
> >and I got the following trace. You can see that the ACK to the Proxy 
> >Authentication Required and the CANCEL have different Via than the 
> >INVITE. I know that this breaks the specs but I thought that 
> these two 
> >modparams should take care of these broken UAs.
> >
> >Also, any ideas what makes the UA switch ports? Is it a NAT 
> issue? Only 
> >a very small percentage of the same UA behave this way.
> >
> >thank you for any help
> >
> >George
> >
> >
> >#
> >U 2006/02/07 12:05:29.756686 195.167.60.21:1231 -> 213.5.43.134:5060 
> >INVITE sip:2116872933 at sip.i-call.gr SIP/2.0.
> >Via: SIP/2.0/UDP 195.167.60.21:1327;branch=z9hG4bK-cc55e25.
> >From: tester <sip:tester at sip.i-call.gr>;tag=a75dbec37247ce75o0.
> >To: <sip:2116872933 at sip.i-call.gr>.
> >Call-ID: 6d30a75b-c6343ebd at 172.22.3.25.
> >CSeq: 101 INVITE.
> >Contact: tester <sip:tester at 195.167.60.21:1327>.
> >Remote-Party-ID: tester
> ><sip:tester at sip.i-call.gr>;screen=yes;party=calling.
> >Max-Forwards: 70.
> >Expires: 240.
> >User-Agent: Sipura/SPA3000-3.1.7(GWg).
> >Supported: x-sipura.
> >Allow: ACK, BYE, CANCEL, INFO, INVITE, NOTIFY, OPTIONS, REFER.
> >Content-Type: application/sdp.
> >Content-Length: 423  .
> >.
> >v=0.
> >o=- 33757 33757 IN IP4 195.167.60.21.
> >s=-..
> >c=IN IP4 195.167.60.21.
> >t=0 0.
> >m=audio 10200 RTP/AVP 18 0 2 4 8 96 97 98 100 101.
> >a=rtpmap:18 G729a/8000.
> >a=rtpmap:0 PCMU/8000.
> >a=rtpmap:2 G726-32/8000.
> >a=rtpmap:4 G723/8000.
> >a=rtpmap:8 PCMA/8000.
> >a=rtpmap:96 G726-40/8000.
> >a=rtpmap:97 G726-24/8000.
> >a=rtpmap:98 G726-16/8000.
> >a=rtpmap:100 NSE/8000.
> >a=rtpmap:101 telephone-event/8000.
> >a=fmtp:101 0-15.
> >a=ptime:30.
> >a=sendrecv.
> >
> >#
> >U 2006/02/07 12:05:29.757360 213.5.43.134:5060 -> 195.167.60.21:1327 
> >SIP/2.0 407 Proxy Authentication Required.
> >Via: SIP/2.0/UDP 195.167.60.21:1327;branch=z9hG4bK-cc55e25.
> >From: tester <sip:tester at sip.i-call.gr>;tag=a75dbec37247ce75o0.
> >To:
> ><sip:2116872933 at sip.i-call.gr>;tag=97e44c910458bd56beb40ca402
> 8d7cc8.0f0
> >e
> >.
> >Call-ID: 6d30a75b-c6343ebd at 172.22.3.25.
> >CSeq: 101 INVITE.
> >Proxy-Authenticate: Digest realm="i-call.gr", 
> >nonce="43e87215b69f85cf82f231965df4ad938a65d43f".
> >Server: OpenSer (1.0.0-tls (x86_64/linux)).
> >Content-Length: 0.
> >Warning: 392 213.5.43.134:5060 "Noisy feedback tells:  pid=10474
> >req_src_ip=195.167.60.21 req_src_port=1231 
> >in_uri=sip:2116872933 at sip.i-call.gr 
> >out_uri=sip:2116872933 at sip.i-call.gr
> >via_cnt==1".
> >. 
> >
> >#
> >U 2006/02/07 12:05:29.865886 195.167.60.21:1327 -> 213.5.43.134:5060 
> >ACK sip:2116872933 at sip.i-call.gr SIP/2.0.
> >Via: SIP/2.0/UDP 195.167.60.21:1328;branch=z9hG4bK-cc55e25.
> >From: tester <sip:tester at sip.i-call.gr>;tag=a75dbec37247ce75o0.
> >To:
> ><sip:2116872933 at sip.i-call.gr>;tag=97e44c910458bd56beb40ca402
> 8d7cc8.0f0
> >e
> >.
> >Call-ID: 6d30a75b-c6343ebd at 172.22.3.25.
> >CSeq: 101 ACK.
> >Contact: tester <sip:tester at 195.167.60.21:1328>.
> >Max-Forwards: 70.
> >User-Agent: Sipura/SPA3000-3.1.7(GWg).
> >Content-Length: 0.
> >.
> >*************************************************************
> **********
> >*
> >**************
> >*** The Via in the ACK is different than in the INVITE and Openser 
> >sends it
> >*** to the wrong server
> >*************************************************************
> **********
> >*
> >**************
> >#
> >U 2006/02/07 12:05:29.866660 213.5.43.134:5060 -> 213.5.xxx.xxx:5060 
> >ACK sip:401#2116872933 at 213.5.xxx.xxx:5060 SIP/2.0.
> >Record-Route: <sip:213.5.43.134;ftag=a75dbec37247ce75o0;lr=on>.
> >Via: SIP/2.0/UDP 213.5.43.134;branch=0.
> >Via: SIP/2.0/UDP 195.167.60.21:1328;branch=z9hG4bK-cc55e25.
> >From: tester <sip:tester at sip.i-call.gr>;tag=a75dbec37247ce75o0.
> >To:
> ><sip:2116872933 at sip.i-call.gr>;tag=97e44c910458bd56beb40ca402
> 8d7cc8.0f0
> >e
> >.
> >Call-ID: 6d30a75b-c6343ebd at 172.22.3.25.
> >CSeq: 101 ACK.
> >Contact: tester <sip:tester at 195.167.60.21:1328>.
> >Max-Forwards: 69.
> >User-Agent: Sipura/SPA3000-3.1.7(GWg).
> >Content-Length: 0.
> >.
> >
> >#
> >U 2006/02/07 12:05:29.959041 195.167.60.21:1327 -> 213.5.43.134:5060 
> >INVITE sip:2116872933 at sip.i-call.gr SIP/2.0.
> >Via: SIP/2.0/UDP 195.167.60.21:1328;branch=z9hG4bK-bf20b945.
> >From: tester <sip:tester at sip.i-call.gr>;tag=a75dbec37247ce75o0.
> >To: <sip:2116872933 at sip.i-call.gr>.
> >Call-ID: 6d30a75b-c6343ebd at 172.22.3.25.
> >CSeq: 102 INVITE.
> >Contact: tester <sip:tester at 195.167.60.21:1328>.
> >Proxy-Authorization: Digest username="tester", realm="i-call.gr", 
> >nonce="43e87215b69f85cf82f231965df4ad938a65d43f",
> >uri="sip:2116872933 at sip.i-call.gr",
> >response="da850791f85d3e882d384d96e4aff30e", algorithm=MD5.
> >Remote-Party-ID: tester
> ><sip:tester at sip.i-call.gr>;screen=yes;party=calling.
> >Max-Forwards: 70.
> >Expires: 240.
> >User-Agent: Sipura/SPA3000-3.1.7(GWg).
> >Supported: x-sipura.
> >Allow: ACK, BYE, CANCEL, INFO, INVITE, NOTIFY, OPTIONS, REFER.
> >Content-Type: application/sdp.
> >Content-Length: 423  .
> >.
> >v=0.
> >o=- 33757 33757 IN IP4 195.167.60.21.
> >s=-..
> >c=IN IP4 195.167.60.21.
> >t=0 0.
> >m=audio 10200 RTP/AVP 18 0 2 4 8 96 97 98 100 101.
> >a=rtpmap:18 G729a/8000.
> >a=rtpmap:0 PCMU/8000.
> >a=rtpmap:2 G726-32/8000.
> >a=rtpmap:4 G723/8000.
> >a=rtpmap:8 PCMA/8000.
> >a=rtpmap:96 G726-40/8000.
> >a=rtpmap:97 G726-24/8000.
> >a=rtpmap:98 G726-16/8000.
> >a=rtpmap:100 NSE/8000.
> >a=rtpmap:101 telephone-event/8000.
> >a=fmtp:101 0-15.
> >a=ptime:30.
> >a=sendrecv.
> >
> >#
> >U 2006/02/07 12:05:29.960454 213.5.43.134:5060 -> 195.167.60.21:1328 
> >SIP/2.0 100 trying -- your call is important to us.
> >Via: SIP/2.0/UDP 195.167.60.21:1328;branch=z9hG4bK-bf20b945.
> >From: tester <sip:tester at sip.i-call.gr>;tag=a75dbec37247ce75o0.
> >To: <sip:2116872933 at sip.i-call.gr>.
> >Call-ID: 6d30a75b-c6343ebd at 172.22.3.25.
> >CSeq: 102 INVITE.
> >Server: OpenSer (1.0.0-tls (x86_64/linux)).
> >Content-Length: 0.
> >Warning: 392 213.5.43.134:5060 "Noisy feedback tells:  pid=10473
> >req_src_ip=195.167.60.21 req_src_port=1327 
> >in_uri=sip:2116872933 at sip.i-call.gr
> >out_uri=sip:400#2116872933 at 213.5.yyy.yyy:5060 via_cnt==1".
> >.
> >
> >*************************************************************
> **********
> >*
> >*** Openser forwards the request to PSTN gateway
> >*************************************************************
> **********
> >*
> >
> >#
> >U 2006/02/07 12:05:29.960516 213.5.43.134:5060 -> 213.5.yyy.yyy:5060 
> >INVITE sip:400#2116872933 at 213.5.yyy.yyy:5060 SIP/2.0.
> >Record-Route: <sip:213.5.43.134;ftag=a75dbec37247ce75o0;lr=on>.
> >Via: SIP/2.0/UDP 213.5.43.134;branch=z9hG4bK53cd.4e18cee6.0.
> >Via: SIP/2.0/UDP 195.167.60.21:1328;branch=z9hG4bK-bf20b945.
> >From: tester <sip:tester at sip.i-call.gr>;tag=a75dbec37247ce75o0.
> >To: <sip:2116872933 at sip.i-call.gr>.
> >Call-ID: 6d30a75b-c6343ebd at 172.22.3.25.
> >CSeq: 102 INVITE.
> >Contact: tester <sip:tester at 195.167.60.21:1328>.
> >Max-Forwards: 69.
> >Expires: 240.
> >User-Agent: Sipura/SPA3000-3.1.7(GWg).
> >Supported: x-sipura.
> >Allow: ACK, BYE, CANCEL, INFO, INVITE, NOTIFY, OPTIONS, REFER.
> >Content-Type: application/sdp.
> >Content-Length: 423  .
> >.
> >v=0.
> >o=- 33757 33757 IN IP4 195.167.60.21.
> >s=-..
> >c=IN IP4 195.167.60.21.
> >t=0 0.
> >m=audio 10200 RTP/AVP 18 0 2 4 8 96 97 98 100 101.
> >a=rtpmap:18 G729a/8000.
> >a=rtpmap:0 PCMU/8000.
> >a=rtpmap:2 G726-32/8000.
> >a=rtpmap:4 G723/8000.
> >a=rtpmap:8 PCMA/8000.
> >a=rtpmap:96 G726-40/8000.
> >a=rtpmap:97 G726-24/8000.
> >a=rtpmap:98 G726-16/8000.
> >a=rtpmap:100 NSE/8000.
> >a=rtpmap:101 telephone-event/8000.
> >a=fmtp:101 0-15.
> >a=ptime:30.
> >a=sendrecv.
> >
> >#
> >U 2006/02/07 12:05:29.975762 213.5.yyy.yyy:57918 -> 
> 213.5.43.134:5060 
> >SIP/2.0 100 Trying.
> >Via: SIP/2.0/UDP 
> 213.5.43.134;branch=z9hG4bK53cd.4e18cee6.0,SIP/2.0/UDP
> >195.167.60.21:1328;branch=z9hG4bK-bf20b945.
> >From: tester <sip:tester at sip.i-call.gr>;tag=a75dbec37247ce75o0.
> >To: <sip:2116872933 at sip.i-call.gr>;tag=329C938C-7DF.
> >Date: Tue, 07 Feb 2006 10:06:34 GMT.
> >Call-ID: 6d30a75b-c6343ebd at 172.22.3.25.
> >Server: Cisco-SIPGateway/IOS-12.x.
> >CSeq: 102 INVITE.
> >Allow-Events: telephone-event.
> >Content-Length: 0.
> >.
> >
> >
> >#
> >U 2006/02/07 12:05:30.149177 213.5.yyy.yyy:57918 -> 
> 213.5.43.134:5060 
> >SIP/2.0 183 Session Progress.
> >Via: SIP/2.0/UDP 
> 213.5.43.134;branch=z9hG4bK53cd.4e18cee6.0,SIP/2.0/UDP
> >195.167.60.21:1328;branch=z9hG4bK-bf20b945.
> >From: tester <sip:tester at sip.i-call.gr>;tag=a75dbec37247ce75o0.
> >To: <sip:2116872933 at sip.i-call.gr>;tag=329C938C-7DF.
> >Date: Tue, 07 Feb 2006 10:06:34 GMT.
> >Call-ID: 6d30a75b-c6343ebd at 172.22.3.25.
> >Server: Cisco-SIPGateway/IOS-12.x.
> >CSeq: 102 INVITE.
> >Allow: INVITE, OPTIONS, BYE, CANCEL, ACK, PRACK, COMET, REFER, 
> >SUBSCRIBE, NOTIFY, INFO, UPDATE, REGISTER.
> >Allow-Events: telephone-event.
> >Contact: <sip:400#2116872933 at 213.5.yyy.yyy:5060>.
> >Record-Route: <sip:213.5.43.134;ftag=a75dbec37247ce75o0;lr=on>.
> >Content-Disposition: session;handling=required.
> >Content-Type: application/sdp.
> >Content-Length: 288.
> >.
> >v=0.
> >o=CiscoSystemsSIP-GW-UserAgent 9560 6985 IN IP4 213.5.yyy.yyy.
> >s=SIP Call.
> >c=IN IP4 213.5.yyy.yyy.
> >t=0 0.
> >m=audio 17868 RTP/AVP 18 101.
> >c=IN IP4 213.5.yyy.yyy.
> >a=rtpmap:18 G729/8000.
> >a=fmtp:18 annexb=no.
> >a=rtpmap:101 telephone-event/8000.
> >a=fmtp:101 0-15.
> >a=ptime:20.
> >a=silenceSupp:off - - - -.
> >
> >#
> >U 2006/02/07 12:05:30.149263 213.5.43.134:5060 -> 195.167.60.21:1328 
> >SIP/2.0 183 Session Progress.
> >Via: SIP/2.0/UDP 195.167.60.21:1328;branch=z9hG4bK-bf20b945.
> >From: tester <sip:tester at sip.i-call.gr>;tag=a75dbec37247ce75o0.
> >To: <sip:2116872933 at sip.i-call.gr>;tag=329C938C-7DF.
> >Date: Tue, 07 Feb 2006 10:06:34 GMT.
> >Call-ID: 6d30a75b-c6343ebd at 172.22.3.25.
> >Server: Cisco-SIPGateway/IOS-12.x.
> >CSeq: 102 INVITE.
> >Allow: INVITE, OPTIONS, BYE, CANCEL, ACK, PRACK, COMET, REFER, 
> >SUBSCRIBE, NOTIFY, INFO, UPDATE, REGISTER.
> >Allow-Events: telephone-event.
> >Contact: <sip:400#2116872933 at 213.5.yyy.yyy:5060>.
> >Record-Route: <sip:213.5.43.134;ftag=a75dbec37247ce75o0;lr=on>.
> >Content-Disposition: session;handling=required.
> >Content-Type: application/sdp.
> >Content-Length: 288.
> >.
> >v=0.
> >o=CiscoSystemsSIP-GW-UserAgent 9560 6985 IN IP4 213.5.yyy.yyy.
> >s=SIP Call.
> >c=IN IP4 213.5.yyy.yyy.
> >t=0 0.
> >m=audio 17868 RTP/AVP 18 101.
> >c=IN IP4 213.5.yyy.yyy.
> >a=rtpmap:18 G729/8000.
> >a=fmtp:18 annexb=no.
> >a=rtpmap:101 telephone-event/8000.
> >a=fmtp:101 0-15.
> >a=ptime:20.
> >a=silenceSupp:off - - - -.
> >
> >*************************************************************
> **********
> >*
> >****
> >*** User Agents sends CANCEL with different Via than in INVITE
> >*** and Openser send it to the wrong server
> >*************************************************************
> **********
> >*
> >****
> >
> >#
> >U 2006/02/07 12:05:37.859125 195.167.60.21:1328 -> 213.5.43.134:5060 
> >CANCEL sip:2116872933 at sip.i-call.gr SIP/2.0.
> >Via: SIP/2.0/UDP 195.167.60.21:1375;branch=z9hG4bK-bf20b945.
> >From: tester <sip:tester at sip.i-call.gr>;tag=a75dbec37247ce75o0.
> >To: <sip:2116872933 at sip.i-call.gr>.
> >Call-ID: 6d30a75b-c6343ebd at 172.22.3.25.
> >CSeq: 102 CANCEL.
> >Proxy-Authorization: Digest username="tester", realm="i-call.gr", 
> >nonce="43e87215b69f85cf82f231965df4ad938a65d43f",
> >uri="sip:2116872933 at sip.i-call.gr",
> >response="0c4bcac79619588b61993a5ea407f520", algorithm=MD5.
> >Max-Forwards: 70.
> >User-Agent: Sipura/SPA3000-3.1.7(GWg).
> >Content-Length: 0.
> >.
> >
> >#
> >U 2006/02/07 12:05:37.859999 213.5.43.134:5060 -> 213.5.xxx.xxx:5060 
> >CANCEL sip:401#2116872933 at 213.5.xxx.xxx:5060 SIP/2.0.
> >Record-Route: <sip:213.5.43.134;ftag=a75dbec37247ce75o0;lr=on>.
> >Via: SIP/2.0/UDP 213.5.43.134;branch=z9hG4bK53cd.5e18cee6.0.
> >Via: SIP/2.0/UDP 195.167.60.21:1375;branch=z9hG4bK-bf20b945.
> >From: tester <sip:tester at sip.i-call.gr>;tag=a75dbec37247ce75o0.
> >To: <sip:2116872933 at sip.i-call.gr>.
> >Call-ID: 6d30a75b-c6343ebd at 172.22.3.25.
> >CSeq: 102 CANCEL.
> >Proxy-Authorization: Digest username="tester", realm="i-call.gr", 
> >nonce="43e87215b69f85cf82f231965df4ad938a65d43f",
> >uri="sip:2116872933 at sip.i-call.gr",
> >response="0c4bcac79619588b61993a5ea407f520", algorithm=MD5.
> >Max-Forwards: 69.
> >User-Agent: Sipura/SPA3000-3.1.7(GWg).
> >Content-Length: 0.
> >.
> >
> >#
> >U 2006/02/07 12:05:37.860901 213.5.xxx.xxx:5060 -> 213.5.43.134:5060 
> >SIP/2.0 481 Call Leg Does Not Exist.
> >Via: SIP/2.0/UDP
> >213.5.43.134;branch=z9hG4bK53cd.5e18cee6.0;received=213.5.43.134.
> >Via: SIP/2.0/UDP 195.167.60.21:1375;branch=z9hG4bK-bf20b945.
> >From: tester <sip:tester at sip.i-call.gr>;tag=a75dbec37247ce75o0.
> >To: <sip:2116872933 at sip.i-call.gr>;tag=as3061dfb6.
> >Call-ID: 6d30a75b-c6343ebd at 172.22.3.25.
> >CSeq: 102 CANCEL.
> >User-Agent: i-Call Service.
> >Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY.
> >Max-Forwards: 70.
> >Content-Length: 0.
> >.
> >
> >#
> >U 2006/02/07 12:05:37.860998 213.5.43.134:5060 -> 195.167.60.21:1375 
> >SIP/2.0 481 Call Leg Does Not Exist.
> >Via: SIP/2.0/UDP 195.167.60.21:1375;branch=z9hG4bK-bf20b945.
> >From: tester <sip:tester at sip.i-call.gr>;tag=a75dbec37247ce75o0.
> >To: <sip:2116872933 at sip.i-call.gr>;tag=as3061dfb6.
> >Call-ID: 6d30a75b-c6343ebd at 172.22.3.25.
> >CSeq: 102 CANCEL.
> >User-Agent: i-Call Service.
> >Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY.
> >Max-Forwards: 70.
> >Content-Length: 0.
> >.
> >
> >
> >
> >
> >
> >  
> >
> >>-----Original Message-----
> >>From: Bogdan-Andrei Iancu [mailto:bogdan at voice-system.ro]
> >>Sent: Friday, February 03, 2006 10:43 PM
> >>To: Papadopoulos Georgios
> >>Cc: users at openser.org
> >>Subject: Re: [Users] Receiving different VIA in INVITE and CANCEL
> >>
> >>Hi George,
> >>
> >>different VIA in INVITE and CANCEL brakes the specs of RFC 
> 3261.  The 
> >>"via1_matching" is a kind of a trick to make un-compliant 
> clients to 
> >>work. The trick is functional. I suspect that maybe not 
> only the VIA 
> >>is the problem. Can you please post the INVITE and CANCEL to have a 
> >>look on them?
> >>
> >>regards,
> >>bogdan
> >>
> >>Papadopoulos Georgios wrote:
> >>
> >>    
> >>
> >>>Hello,
> >>>
> >>>I have an issue with some user agents, (Linksys PAP2 and
> >>>      
> >>>
> >>Sipura 3000)
> >>    
> >>
> >>>sending different Via in CANCEL than in INVITE.
> >>>Of course the result is that the caller hangs up and the
> >>>      
> >>>
> >>callee keeps
> >>    
> >>
> >>>ringing.
> >>>I tried to use
> >>>	modparam("tm", "via1_matching", 0)
> >>>but it did not solve the problem. 
> >>>
> >>>I have two questions:
> >>>1. Is the via1_matching in TM working as described or is it broken?
> >>>
> >>>2. What can be causing this behavior of the user agent? 
> Not all our 
> >>>users who have these user agents report this problem
> >>>      
> >>>
> >>(actually very few
> >>    
> >>
> >>>have the problem). In our lab we tried same user agent, same
> >>>      
> >>>
> >>firmware
> >>    
> >>
> >>>but could never reproduce this behavior no matter how bad we
> >>>      
> >>>
> >>tried to
> >>    
> >>
> >>>mess up their configuration.
> >>>
> >>>Any help will be greatly appreciated. Thanks.
> >>>
> >>>George
> >>>      
> >>>
> 

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