Re: [Users] Call not torn down when CANCEL sent before INVITE message is finished being processed

4 Oct 2005

I really wish all UACs would conform to that section of RFC3261 but i
have yet to see a single one that does =(

Actually i've NEVER seen a device that is fully conformant to the spec,
sad how that is (although i'm sure there are a few)

Klaus Darilion wrote:

...
  Tavis P wrote:

  With the latest CVS build of OSER, when an INVITE
is sent followed by a
 CANCEL, before OSER has finished processing the initial INVITE, the
 outbound call is not torn down, and SER routes the CANCEL message to 

 AFAIK this may happen with all versions of ser/openser.

 btw: Your SIPURA is broken:
 1. It sends a CANCEL although it has not received a response yet.
 According tot the standard the UAC must withheld the CANCEL until a
 provisional response is received.

 2. It sends an INVITE right after the CANCEL. Weird.

 regards
 klaus

  itself.
 Below is an ngrep trace of the exchange.

 I have a development cluster of mediaproxy servers setup and one of them
 was taken offline but left in the loop which increased the time it took
 for a message to be processed which is how i came across this situation
 (it took some seconds before the INVITE was able to be transmitted to
 the nexthop_proxy)

 -- 

 ------------------------------------------------------------------------

 #
 U 2005/10/04 01:44:43.134010 SIP_UAC:5070 -> OSER_PROXY:15061
 INVITE sip:6046946333@OSER_PROXY:15061 SIP/2.0.
 Via: SIP/2.0/UDP 192.168.99.66:5070;branch=z9hG4bK-34d67b8f.
 From: tavis <sip:200110005334@OSER_PROXY:15061>;tag=6e3e1f53c3f352efo0.
 To: <sip:6046946333@OSER_PROXY:15061>.
 Call-ID: ec5b9223-f98ffe5f(a)192.168.99.66.
 CSeq: 101 INVITE.
 Max-Forwards: 70.
 Contact: tavis <sip:200110005334@192.168.99.66:5070>.
 Expires: 240.
 User-Agent: Sipura/SPA3000-3.1.5(GWb).
 Content-Length: 287.
 Allow: ACK, BYE, CANCEL, INFO, INVITE, NOTIFY, OPTIONS, REFER.
 Supported: x-sipura.
 Content-Type: application/sdp.
 .
 v=0.
 o=- 25915303 25915303 IN IP4 192.168.99.66.
 s=-.
 c=IN IP4 192.168.99.66.
 t=0 0.
 m=audio 16410 RTP/AVP 18 0 4 8 101.
 a=rtpmap:18 G729a/8000.
 a=rtpmap:0 PCMU/8000.
 a=rtpmap:4 G723/8000.
 a=rtpmap:8 PCMA/8000.
 a=rtpmap:101 telephone-event/8000.
 a=fmtp:101 0-15.
 a=ptime:20.
 a=sendrecv.

 #
 U 2005/10/04 01:44:43.135736 OSER_PROXY:15061 -> SIP_UAC:5070
 SIP/2.0 407 Proxy Authentication Required.
 Via: SIP/2.0/UDP
 192.168.99.66:5070;branch=z9hG4bK-34d67b8f;rport=5070;received=SIP_UAC.
 From: tavis <sip:200110005334@OSER_PROXY:15061>;tag=6e3e1f53c3f352efo0.
 To:
 <sip:6046946333@OSER_PROXY:15061>;tag=688bd636d693eb2ab143ccbaf0db2c7a.8474.

 Call-ID: ec5b9223-f98ffe5f(a)192.168.99.66.
 CSeq: 101 INVITE.
 Proxy-Authenticate: Digest realm="hq.galnet.ca",
 nonce="4341dfb7e0cfaa398a6f425c02262325f943b20e", qop="auth".
 Content-Length: 0.
 .

 #
 U 2005/10/04 01:44:43.147960 SIP_UAC:5070 -> OSER_PROXY:15061
 ACK sip:6046946333@OSER_PROXY:15061 SIP/2.0.
 Via: SIP/2.0/UDP 192.168.99.66:5070;branch=z9hG4bK-34d67b8f.
 From: tavis <sip:200110005334@OSER_PROXY:15061>;tag=6e3e1f53c3f352efo0.
 To:
 <sip:6046946333@OSER_PROXY:15061>;tag=688bd636d693eb2ab143ccbaf0db2c7a.8474.

 Call-ID: ec5b9223-f98ffe5f(a)192.168.99.66.
 CSeq: 101 ACK.
 Max-Forwards: 70.
 Contact: tavis <sip:200110005334@192.168.99.66:5070>.
 User-Agent: Sipura/SPA3000-3.1.5(GWb).
 Content-Length: 0.
 .

 #
 U 2005/10/04 01:44:43.154728 SIP_UAC:5070 -> OSER_PROXY:15061
 INVITE sip:6046946333@OSER_PROXY:15061 SIP/2.0.
 Via: SIP/2.0/UDP 192.168.99.66:5070;branch=z9hG4bK-249e2787.
 From: tavis <sip:200110005334@OSER_PROXY:15061>;tag=6e3e1f53c3f352efo0.
 To: <sip:6046946333@OSER_PROXY:15061>.
 Call-ID: ec5b9223-f98ffe5f(a)192.168.99.66.
 CSeq: 102 INVITE.
 Max-Forwards: 70.
 Proxy-Authorization: Digest

username="200110005334",realm="hq.galnet.ca",nonce="4341dfb7e0cfaa398a6f425c02262325f943b20e",uri="sip:6046946333@OSER_PROXY:15061",algorithm=MD5,response="6867ef34181ba7cedbcbf8dd869f53ab",qop=auth,nc=00000001,cnonce="750e43e5".

 Contact: tavis <sip:200110005334@192.168.99.66:5070>.
 Expires: 240.
 User-Agent: Sipura/SPA3000-3.1.5(GWb).
 Content-Length: 287.
 Allow: ACK, BYE, CANCEL, INFO, INVITE, NOTIFY, OPTIONS, REFER.
 Supported: x-sipura.
 Content-Type: application/sdp.
 .
 v=0.
 o=- 25915303 25915303 IN IP4 192.168.99.66.
 s=-.
 c=IN IP4 192.168.99.66.
 t=0 0.
 m=audio 16410 RTP/AVP 18 0 4 8 101.
 a=rtpmap:18 G729a/8000.
 a=rtpmap:0 PCMU/8000.
 a=rtpmap:4 G723/8000.
 a=rtpmap:8 PCMA/8000.
 a=rtpmap:101 telephone-event/8000.
 a=fmtp:101 0-15.
 a=ptime:20.
 a=sendrecv.

 #
 U 2005/10/04 01:44:43.648366 SIP_UAC:5070 -> OSER_PROXY:15061
 INVITE sip:6046946333@OSER_PROXY:15061 SIP/2.0.
 Via: SIP/2.0/UDP 192.168.99.66:5070;branch=z9hG4bK-249e2787.
 From: tavis <sip:200110005334@OSER_PROXY:15061>;tag=6e3e1f53c3f352efo0.
 To: <sip:6046946333@OSER_PROXY:15061>.
 Call-ID: ec5b9223-f98ffe5f(a)192.168.99.66.
 CSeq: 102 INVITE.
 Max-Forwards: 70.
 Proxy-Authorization: Digest

username="200110005334",realm="hq.galnet.ca",nonce="4341dfb7e0cfaa398a6f425c02262325f943b20e",uri="sip:6046946333@OSER_PROXY:15061",algorithm=MD5,response="6867ef34181ba7cedbcbf8dd869f53ab",qop=auth,nc=00000001,cnonce="750e43e5".

 Contact: tavis <sip:200110005334@192.168.99.66:5070>.
 Expires: 240.
 User-Agent: Sipura/SPA3000-3.1.5(GWb).
 Content-Length: 287.
 Allow: ACK, BYE, CANCEL, INFO, INVITE, NOTIFY, OPTIONS, REFER.
 Supported: x-sipura.
 Content-Type: application/sdp.
 .
 v=0.
 o=- 25915303 25915303 IN IP4 192.168.99.66.
 s=-.
 c=IN IP4 192.168.99.66.
 t=0 0.
 m=audio 16410 RTP/AVP 18 0 4 8 101.
 a=rtpmap:18 G729a/8000.
 a=rtpmap:0 PCMU/8000.
 a=rtpmap:4 G723/8000.
 a=rtpmap:8 PCMA/8000.
 a=rtpmap:101 telephone-event/8000.
 a=fmtp:101 0-15.
 a=ptime:20.
 a=sendrecv.

 #
 U 2005/10/04 01:44:44.155113 SIP_UAC:5070 -> OSER_PROXY:15061
 CANCEL sip:6046946333@OSER_PROXY:15061 SIP/2.0.
 Via: SIP/2.0/UDP 192.168.99.66:5070;branch=z9hG4bK-249e2787.
 From: tavis <sip:200110005334@OSER_PROXY:15061>;tag=6e3e1f53c3f352efo0.
 To: <sip:6046946333@OSER_PROXY:15061>.
 Call-ID: ec5b9223-f98ffe5f(a)192.168.99.66.
 CSeq: 102 CANCEL.
 Max-Forwards: 70.
 Proxy-Authorization: Digest

username="200110005334",realm="hq.galnet.ca",nonce="4341dfb7e0cfaa398a6f425c02262325f943b20e",uri="sip:6046946333@OSER_PROXY:15061",algorithm=MD5,response="512097281b4fba990adf2cc6c273f033",qop=auth,nc=00000002,cnonce="750e43e5".

 User-Agent: Sipura/SPA3000-3.1.5(GWb).
 Content-Length: 0.
 .

 #
 U 2005/10/04 01:44:44.285994 OSER_PROXY:15061 -> SIP_UAC:5070
 SIP/2.0 483 Too many hops.
 Via: SIP/2.0/UDP
 192.168.99.66:5070;rport=5070;received=SIP_UAC;branch=z9hG4bK-249e2787.
 From: tavis <sip:200110005334@OSER_PROXY:15061>;tag=6e3e1f53c3f352efo0.
 To:
 <sip:6046946333@OSER_PROXY:15061>;tag=688bd636d693eb2ab143ccbaf0db2c7a.32f9.

 Call-ID: ec5b9223-f98ffe5f(a)192.168.99.66.
 CSeq: 102 CANCEL.
 Content-Length: 0.
 .

 #
 U 2005/10/04 01:44:44.648305 SIP_UAC:5070 -> OSER_PROXY:15061
 INVITE sip:6046946333@OSER_PROXY:15061 SIP/2.0.
 Via: SIP/2.0/UDP 192.168.99.66:5070;branch=z9hG4bK-249e2787.
 From: tavis <sip:200110005334@OSER_PROXY:15061>;tag=6e3e1f53c3f352efo0.
 To: <sip:6046946333@OSER_PROXY:15061>.
 Call-ID: ec5b9223-f98ffe5f(a)192.168.99.66.
 CSeq: 102 INVITE.
 Max-Forwards: 70.
 Proxy-Authorization: Digest

username="200110005334",realm="hq.galnet.ca",nonce="4341dfb7e0cfaa398a6f425c02262325f943b20e",uri="sip:6046946333@OSER_PROXY:15061",algorithm=MD5,response="11a15f9ef4fdb1c9ab05566cad92d67e",qop=auth,nc=00000002,cnonce="750e43e5".

 Contact: tavis <sip:200110005334@192.168.99.66:5070>.
 Expires: 240.
 User-Agent: Sipura/SPA3000-3.1.5(GWb).
 Content-Length: 287.
 Allow: ACK, BYE, CANCEL, INFO, INVITE, NOTIFY, OPTIONS, REFER.
 Supported: x-sipura.
 Content-Type: application/sdp.
 .
 v=0.
 o=- 25915303 25915303 IN IP4 192.168.99.66.
 s=-.
 c=IN IP4 192.168.99.66.
 t=0 0.
 m=audio 16410 RTP/AVP 18 0 4 8 101.
 a=rtpmap:18 G729a/8000.
 a=rtpmap:0 PCMU/8000.
 a=rtpmap:4 G723/8000.
 a=rtpmap:8 PCMA/8000.
 a=rtpmap:101 telephone-event/8000.
 a=fmtp:101 0-15.
 a=ptime:20.
 a=sendrecv.

 #
 U 2005/10/04 01:44:44.688471 OSER_PROXY:15061 -> SIP_UAC:5070
 SIP/2.0 100 trying -- your call is important to us.
 Via: SIP/2.0/UDP
 192.168.99.66:5070;branch=z9hG4bK-249e2787;rport=5070;received=SIP_UAC.
 From: tavis <sip:200110005334@OSER_PROXY:15061>;tag=6e3e1f53c3f352efo0.
 To: <sip:6046946333@OSER_PROXY:15061>.
 Call-ID: ec5b9223-f98ffe5f(a)192.168.99.66.
 CSeq: 102 INVITE.
 Content-Length: 0.
 .

 #
 U 2005/10/04 01:44:44.689012 OSER_PROXY:15061 -> NEXTHOP_PROXY:5060
 INVITE sip:16046946333@NEXTHOP_PROXY SIP/2.0.
 Record-Route: <sip:OSER_PROXY:15061;ftag=6e3e1f53c3f352efo0;lr=on>.
 Via: SIP/2.0/UDP OSER_PROXY:15061;branch=z9hG4bK11ea.6c311116.0.
 Via: SIP/2.0/UDP
 192.168.99.66:5070;rport=5070;received=SIP_UAC;branch=z9hG4bK-249e2787.
 From: tavis <sip:200110005334@OSER_PROXY:15061>;tag=6e3e1f53c3f352efo0.
 To: <sip:6046946333@OSER_PROXY:15061>.
 Call-ID: ec5b9223-f98ffe5f(a)192.168.99.66.
 CSeq: 102 INVITE.
 Max-Forwards: 15.
 Contact: tavis <sip:200110005334@SIP_UAC:5070>.
 Expires: 240.
 User-Agent: Sipura/SPA3000-3.1.5(GWb).
 Content-Length: 288.
 Allow: ACK, BYE, CANCEL, INFO, INVITE, NOTIFY, OPTIONS, REFER.
 Supported: x-sipura.
 Content-Type: application/sdp.
 .
 v=0.
 o=- 25915303 25915303 IN IP4 192.168.99.66.
 s=-.
 c=IN IP4 OSER_PROXY.
 t=0 0.
 m=audio 35328 RTP/AVP 18 0 4 8 101.
 a=rtpmap:18 G729a/8000.
 a=rtpmap:0 PCMU/8000.
 a=rtpmap:4 G723/8000.
 a=rtpmap:8 PCMA/8000.
 a=rtpmap:101 telephone-event/8000.
 a=fmtp:101 0-15.
 a=ptime:20.
 a=sendrecv.

 #
 U 2005/10/04 01:44:45.396833 OSER_PROXY:15061 -> NEXTHOP_PROXY:5060
 INVITE sip:16046946333@NEXTHOP_PROXY SIP/2.0.
 Record-Route: <sip:OSER_PROXY:15061;ftag=6e3e1f53c3f352efo0;lr=on>.
 Via: SIP/2.0/UDP OSER_PROXY:15061;branch=z9hG4bK11ea.6c311116.0.
 Via: SIP/2.0/UDP
 192.168.99.66:5070;rport=5070;received=SIP_UAC;branch=z9hG4bK-249e2787.
 From: tavis <sip:200110005334@OSER_PROXY:15061>;tag=6e3e1f53c3f352efo0.
 To: <sip:6046946333@OSER_PROXY:15061>.
 Call-ID: ec5b9223-f98ffe5f(a)192.168.99.66.
 CSeq: 102 INVITE.
 Max-Forwards: 15.
 Contact: tavis <sip:200110005334@SIP_UAC:5070>.
 Expires: 240.
 User-Agent: Sipura/SPA3000-3.1.5(GWb).
 Content-Length: 288.
 Allow: ACK, BYE, CANCEL, INFO, INVITE, NOTIFY, OPTIONS, REFER.
 Supported: x-sipura.
 Content-Type: application/sdp.
 .
 v=0.
 o=- 25915303 25915303 IN IP4 192.168.99.66.
 s=-.
 c=IN IP4 OSER_PROXY.
 t=0 0.
 m=audio 35328 RTP/AVP 18 0 4 8 101.
 a=rtpmap:18 G729a/8000.
 a=rtpmap:0 PCMU/8000.
 a=rtpmap:4 G723/8000.
 a=rtpmap:8 PCMA/8000.
 a=rtpmap:101 telephone-event/8000.
 a=fmtp:101 0-15.
 a=ptime:20.
 a=sendrecv.

 #
 U 2005/10/04 01:44:46.090526 NEXTHOP_PROXY:5060 -> OSER_PROXY:15061
 SIP/2.0 183 Inband Information.
 Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, REFER, NOTIFY, REGISTER.
 Via: SIP/2.0/UDP OSER_PROXY:15061;branch=z9hG4bK11ea.6c311116.0.
 Via: SIP/2.0/UDP
 192.168.99.66:5070;rport=5070;received=SIP_UAC;branch=z9hG4bK-249e2787.
 Record-Route: <sip:OSER_PROXY:15061;ftag=6e3e1f53c3f352efo0;lr=on>.
 To: <sip:6046946333@OSER_PROXY:15061>;tag=40032033.
 From: tavis <sip:200110005334@OSER_PROXY:15061>;tag=6e3e1f53c3f352efo0.
 Call-ID: ec5b9223-f98ffe5f(a)192.168.99.66.
 X-SHOUT-Channel: INBOUND 1:15:21:1.
 CSeq: 102 INVITE.
 Contact: sip:anonymous@NEXTHOP_PROXY.
 User-Agent: SHOUT 3.3.1p3v71.
 Content-Type: application/sdp.
 Content-Length: 174.
 .
 v=0.
 o=- 0 0 IN IP4 NEXTHOP_PROXY.
 s=SIP call via SHOUT.
 c=IN IP4 NEXTHOP_PROXY.
 t=0 0.
 m=audio 19004 RTP/AVP 18 101.
 a=rtpmap:18 G729/8000.
 a=rtpmap:101 telephone-event/8000.

 #
 U 2005/10/04 01:44:46.104387 OSER_PROXY:15061 -> SIP_UAC:5070
 SIP/2.0 183 Inband Information.
 Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, REFER, NOTIFY, REGISTER.
 Via: SIP/2.0/UDP
 192.168.99.66:5070;rport=5070;received=SIP_UAC;branch=z9hG4bK-249e2787.
 Record-Route: <sip:OSER_PROXY:15061;ftag=6e3e1f53c3f352efo0;lr=on>.
 To: <sip:6046946333@OSER_PROXY:15061>;tag=40032033.
 From: tavis <sip:200110005334@OSER_PROXY:15061>;tag=6e3e1f53c3f352efo0.
 Call-ID: ec5b9223-f98ffe5f(a)192.168.99.66.
 X-SHOUT-Channel: INBOUND 1:15:21:1.
 CSeq: 102 INVITE.
 Contact: sip:anonymous@NEXTHOP_PROXY.
 User-Agent: SHOUT 3.3.1p3v71.
 Content-Type: application/sdp.
 Content-Length: 176.
 .
 v=0.
 o=- 0 0 IN IP4 NEXTHOP_PROXY.
 s=SIP call via SHOUT.
 c=IN IP4 OSER_PROXY.
 t=0 0.
 m=audio 35328 RTP/AVP 18 101.
 a=rtpmap:18 G729/8000.
 a=rtpmap:101 telephone-event/8000.

 #
 U 2005/10/04 01:44:46.190376 OSER_PROXY:15061 -> SIP_UAC:5070
 SIP/2.0 183 Inband Information.
 Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, REFER, NOTIFY, REGISTER.
 Via: SIP/2.0/UDP
 192.168.99.66:5070;rport=5070;received=SIP_UAC;branch=z9hG4bK-249e2787.
 Record-Route: <sip:OSER_PROXY:15061;ftag=6e3e1f53c3f352efo0;lr=on>.
 To: <sip:6046946333@OSER_PROXY:15061>;tag=40032033.
 From: tavis <sip:200110005334@OSER_PROXY:15061>;tag=6e3e1f53c3f352efo0.
 Call-ID: ec5b9223-f98ffe5f(a)192.168.99.66.
 X-SHOUT-Channel: INBOUND 1:15:21:1.
 CSeq: 102 INVITE.
 Contact: sip:anonymous@NEXTHOP_PROXY.
 User-Agent: SHOUT 3.3.1p3v71.
 Content-Type: application/sdp.
 Content-Length: 176.
 .
 v=0.
 o=- 0 0 IN IP4 NEXTHOP_PROXY.
 s=SIP call via SHOUT.
 c=IN IP4 OSER_PROXY.
 t=0 0.
 m=audio 35328 RTP/AVP 18 101.
 a=rtpmap:18 G729/8000.
 a=rtpmap:101 telephone-event/8000.

 ##
 U 2005/10/04 01:44:46.702880 OSER_PROXY:15061 -> SIP_UAC:5070
 SIP/2.0 183 Inband Information.
 Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, REFER, NOTIFY, REGISTER.
 Via: SIP/2.0/UDP
 192.168.99.66:5070;rport=5070;received=SIP_UAC;branch=z9hG4bK-249e2787.
 Record-Route: <sip:OSER_PROXY:15061;ftag=6e3e1f53c3f352efo0;lr=on>.
 To: <sip:6046946333@OSER_PROXY:15061>;tag=40032033.
 From: tavis <sip:200110005334@OSER_PROXY:15061>;tag=6e3e1f53c3f352efo0.
 Call-ID: ec5b9223-f98ffe5f(a)192.168.99.66.
 X-SHOUT-Channel: INBOUND 1:15:21:1.
 CSeq: 102 INVITE.
 Contact: sip:anonymous@NEXTHOP_PROXY.
 User-Agent: SHOUT 3.3.1p3v71.
 Content-Type: application/sdp.
 Content-Length: 176.
 .
 v=0.
 o=- 0 0 IN IP4 NEXTHOP_PROXY.
 s=SIP call via SHOUT.
 c=IN IP4 OSER_PROXY.
 t=0 0.
 m=audio 35328 RTP/AVP 18 101.
 a=rtpmap:18 G729/8000.
 a=rtpmap:101 telephone-event/8000.

 ------------------------------------------------------------------------

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Re: [Users] Call not torn down when CANCEL sent before INVITE message is finished being processed