481 No Application Session

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Mirror Xu

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Nov 14, 2013, 2:56:10 AM11/14/13
to cipan...@googlegroups.com
Hello,

I am testing VoIP business using cipango as a sip server and I had found a question appears occasionally:

The scenes is user c invite user h, user h reply 200 OK, user c send ACK, and then user c and user h establish a success sip session. But when I try to end the session by send BYE message from user c to the user h, sometimes the BYE was sended successfully and sometimes failure because the cipango reply back with a [481 No Application Session] message directly. The SIP message and session call-id were all correct.

Is there anyone know about this question, help me please!

Best regards,

Mirror

============================================
Below is the SIP message flow:

2013-11-14 15:05:02 IN  WS /10.166.41.129:18080 < /10.166.41.129:22670

INVITE sip:h...@10.166.41.129 SIP/2.0
Call-ID: 0f5b95a6-4443-23de-a85d-5c5fe7b8b763
Contact: "c"<sip:c...@df7jal23ls0d.invalid;rtcweb-breaker=no;click2call=no;transport=ws>;+g.oma.sip-im;+sip.ice
Content-Length: 1833
Content-Type: application/sdp
CSeq: 24912 INVITE
From: "c"<sip:c...@10.166.41.129:18080>;tag=LsiBZJykVlDcGP5wHKpn
Max-Forwards: 70
Organization: Huawei_UCC
User-Agent: Espace WebRTC
Via: SIP/2.0/WS df7jal23ls0d.invalid;branch=z9hG4bKGaT1nLWTIo6Z11To2BBQ7fv5h6Tvn8Gx;rport

v=0
o=- 3220673645713299500 2 IN IP4 127.0.0.1
s=Doubango Telecom - chrome
t=0 0
a=group:BUNDLE audio
a=msid-semantic: WMS x59Y5mJmnvdNpj6v0UOkS3HaIw0lYN8zIGyx
m=audio 60718 RTP/SAVPF 111 103 104 0 8 107 106 105 13 126
c=IN IP4 10.166.41.129
a=rtcp:60718 IN IP4 10.166.41.129
a=candidate:2062110140 1 udp 2113937151 10.166.41.129 60718 typ host generation 0
a=candidate:2062110140 2 udp 2113937151 10.166.41.129 60718 typ host generation 0
a=candidate:2694876 1 udp 2113937151 10.166.41.109 60719 typ host generation 0
a=candidate:2694876 2 udp 2113937151 10.166.41.109 60719 typ host generation 0
a=candidate:879407436 1 tcp 1509957375 10.166.41.129 0 typ host generation 0
a=candidate:879407436 2 tcp 1509957375 10.166.41.129 0 typ host generation 0
a=candidate:1319821868 1 tcp 1509957375 10.166.41.109 0 typ host generation 0
a=candidate:1319821868 2 tcp 1509957375 10.166.41.109 0 typ host generation 0
a=ice-ufrag:m4N1lszgQOZgVKsZ
a=ice-pwd:Qbz3guE1lriFODg+f6CA525N
a=ice-options:google-ice
a=extmap:1 urn:ietf:params:rtp-hdrext:ssrc-audio-level
a=sendrecv
a=mid:audio
a=rtcp-mux
a=crypto:0 AES_CM_128_HMAC_SHA1_32 inline:i57hdqkvRJjJFOVz3vI1UHQuqWcy1OK66TbtLVo3
a=crypto:1 AES_CM_128_HMAC_SHA1_80 inline:HPyhrEbW4zf3WMfOsxZ9nZDPQKDaeQ3eJ7Ah+cSc
a=rtpmap:111 opus/48000/2
a=fmtp:111 minptime=10
a=rtpmap:103 ISAC/16000
a=rtpmap:104 ISAC/32000
a=rtpmap:0 PCMU/8000
a=rtpmap:8 PCMA/8000
a=rtpmap:107 CN/48000
a=rtpmap:106 CN/32000
a=rtpmap:105 CN/16000
a=rtpmap:13 CN/8000
a=rtpmap:126 telephone-event/8000
a=maxptime:60
a=ssrc:3161698596 cname:YYl5pdqlYkz9AuIC
a=ssrc:3161698596 msid:x59Y5mJmnvdNpj6v0UOkS3HaIw0lYN8zIGyx x59Y5mJmnvdNpj6v0UOkS3HaIw0lYN8zIGyxa0
a=ssrc:3161698596 mslabel:x59Y5mJmnvdNpj6v0UOkS3HaIw0lYN8zIGyx
a=ssrc:3161698596 label:x59Y5mJmnvdNpj6v0UOkS3HaIw0lYN8zIGyxa0

2013-11-14 15:05:02 OUT WS /10.166.41.129:18080 > /10.166.41.129:22670

SIP/2.0 100 Trying
Call-ID: 0f5b95a6-4443-23de-a85d-5c5fe7b8b763
CSeq: 24912 INVITE
From: "c"<sip:c...@10.166.41.129:18080>;tag=LsiBZJykVlDcGP5wHKpn
Via: SIP/2.0/WS df7jal23ls0d.invalid;branch=z9hG4bKGaT1nLWTIo6Z11To2BBQ7fv5h6Tvn8Gx;received=10.166.41.129;rport=22670
Content-Length: 0


2013-11-14 15:05:03 OUT WS /10.166.41.129:18080 > /10.166.41.129:22675

INVITE sip:h...@10.166.41.129:22675;transport=ws SIP/2.0
Call-ID: 4HTc8YCTNF1@X00197827
Contact: <sip:10.166.41.129:5060;appid=1Y6.2hm63VKNOwL>
Content-Length: 1833
Content-Type: application/sdp
CSeq: 1 INVITE
From: <sip:c...@10.166.41.129:5060>;tag=1Y6.2hm63VKNOwL-ylCwY
Max-Forwards: 70
Via: SIP/2.0/WS 10.166.41.129:18080;branch=z9hG4bK5D3RExLDLFn

v=0
o=- 3220673645713299500 2 IN IP4 127.0.0.1
s=Doubango Telecom - chrome
t=0 0
a=group:BUNDLE audio
a=msid-semantic: WMS x59Y5mJmnvdNpj6v0UOkS3HaIw0lYN8zIGyx
m=audio 60718 RTP/SAVPF 111 103 104 0 8 107 106 105 13 126
c=IN IP4 10.166.41.129
a=rtcp:60718 IN IP4 10.166.41.129
a=candidate:2062110140 1 udp 2113937151 10.166.41.129 60718 typ host generation 0
a=candidate:2062110140 2 udp 2113937151 10.166.41.129 60718 typ host generation 0
a=candidate:2694876 1 udp 2113937151 10.166.41.109 60719 typ host generation 0
a=candidate:2694876 2 udp 2113937151 10.166.41.109 60719 typ host generation 0
a=candidate:879407436 1 tcp 1509957375 10.166.41.129 0 typ host generation 0
a=candidate:879407436 2 tcp 1509957375 10.166.41.129 0 typ host generation 0
a=candidate:1319821868 1 tcp 1509957375 10.166.41.109 0 typ host generation 0
a=candidate:1319821868 2 tcp 1509957375 10.166.41.109 0 typ host generation 0
a=ice-ufrag:m4N1lszgQOZgVKsZ
a=ice-pwd:Qbz3guE1lriFODg+f6CA525N
a=ice-options:google-ice
a=extmap:1 urn:ietf:params:rtp-hdrext:ssrc-audio-level
a=sendrecv
a=mid:audio
a=rtcp-mux
a=crypto:0 AES_CM_128_HMAC_SHA1_32 inline:i57hdqkvRJjJFOVz3vI1UHQuqWcy1OK66TbtLVo3
a=crypto:1 AES_CM_128_HMAC_SHA1_80 inline:HPyhrEbW4zf3WMfOsxZ9nZDPQKDaeQ3eJ7Ah+cSc
a=rtpmap:111 opus/48000/2
a=fmtp:111 minptime=10
a=rtpmap:103 ISAC/16000
a=rtpmap:104 ISAC/32000
a=rtpmap:0 PCMU/8000
a=rtpmap:8 PCMA/8000
a=rtpmap:107 CN/48000
a=rtpmap:106 CN/32000
a=rtpmap:105 CN/16000
a=rtpmap:13 CN/8000
a=rtpmap:126 telephone-event/8000
a=maxptime:60
a=ssrc:3161698596 cname:YYl5pdqlYkz9AuIC
a=ssrc:3161698596 msid:x59Y5mJmnvdNpj6v0UOkS3HaIw0lYN8zIGyx x59Y5mJmnvdNpj6v0UOkS3HaIw0lYN8zIGyxa0
a=ssrc:3161698596 mslabel:x59Y5mJmnvdNpj6v0UOkS3HaIw0lYN8zIGyx
a=ssrc:3161698596 label:x59Y5mJmnvdNpj6v0UOkS3HaIw0lYN8zIGyxa0

2013-11-14 15:05:03 IN  WS /10.166.41.129:18080 < /10.166.41.129:22675

SIP/2.0 100 Trying (sent from the Transaction Layer)
Call-ID: 4HTc8YCTNF1@X00197827
Content-Length: 0
CSeq: 1 INVITE
From: <sip:c...@10.166.41.129:5060>;tag=1Y6.2hm63VKNOwL-ylCwY
Via: SIP/2.0/WS 10.166.41.129:18080;branch=z9hG4bK5D3RExLDLFn


2013-11-14 15:05:04 IN  WS /10.166.41.129:18080 < /10.166.41.129:22675

SIP/2.0 180 Ringing
Allow: ACK, BYE, CANCEL, INVITE, MESSAGE, NOTIFY, OPTIONS, PRACK, REFER, UPDATE
Call-ID: 4HTc8YCTNF1@X00197827
Contact: <sip:h...@df7jal23ls0d.invalid;transport=ws>
Content-Length: 0
CSeq: 1 INVITE
From: <sip:c...@10.166.41.129:5060>;tag=1Y6.2hm63VKNOwL-ylCwY
To: <sip:h...@10.166.41.129>;tag=9hKxUBp4JEKmGw9eUHZ8
Via: SIP/2.0/WS 10.166.41.129:18080;branch=z9hG4bK5D3RExLDLFn


2013-11-14 15:05:04 OUT WS /10.166.41.129:18080 > /10.166.41.129:22670

SIP/2.0 180 Ringing
Call-ID: 0f5b95a6-4443-23de-a85d-5c5fe7b8b763
Contact: <sip:10.166.41.129:18080;transport=ws;appid=1Y6.ML4s7x0fdd>
CSeq: 24912 INVITE
From: "c"<sip:c...@10.166.41.129:18080>;tag=LsiBZJykVlDcGP5wHKpn
To: <sip:h...@10.166.41.129>;tag=1Y6.ML4s7x0fdd-2aETzm
Via: SIP/2.0/WS df7jal23ls0d.invalid;branch=z9hG4bKGaT1nLWTIo6Z11To2BBQ7fv5h6Tvn8Gx;received=10.166.41.129;rport=22670
Content-Length: 0


2013-11-14 15:05:06 IN  WS /10.166.41.129:18080 < /10.166.41.129:22675

SIP/2.0 200 OK
Allow: ACK, BYE, CANCEL, INVITE, MESSAGE, NOTIFY, OPTIONS, PRACK, REFER, UPDATE
Call-ID: 4HTc8YCTNF1@X00197827
Contact: <sip:h...@df7jal23ls0d.invalid;transport=ws>
Content-Length: 1393
Content-Type: application/sdp
CSeq: 1 INVITE
From: <sip:c...@10.166.41.129:5060>;tag=1Y6.2hm63VKNOwL-ylCwY
To: <sip:h...@10.166.41.129>;tag=9hKxUBp4JEKmGw9eUHZ8
Via: SIP/2.0/WS 10.166.41.129:18080;branch=z9hG4bK5D3RExLDLFn

v=0
o=- 6084755400264331000 2 IN IP4 127.0.0.1
s=Doubango Telecom - chrome
t=0 0
a=group:BUNDLE audio
a=msid-semantic: WMS ZSPJWL6e1bLZ0FSO4YnMAacXJbAmvzvD62hm
m=audio 60727 RTP/SAVPF 111 103 104 0 8 107 106 105 13 126
c=IN IP4 10.166.41.129
a=rtcp:1 IN IP4 0.0.0.0
a=candidate:2062110140 1 udp 2113937151 10.166.41.129 60727 typ host generation 0
a=candidate:2694876 1 udp 2113937151 10.166.41.109 60728 typ host generation 0
a=candidate:879407436 1 tcp 1509957375 10.166.41.129 0 typ host generation 0
a=candidate:1319821868 1 tcp 1509957375 10.166.41.109 0 typ host generation 0
a=ice-ufrag:4Bq35es6vtzMdrmX
a=ice-pwd:6/7DHPnobgVD/UCV7dQSezf/
a=extmap:1 urn:ietf:params:rtp-hdrext:ssrc-audio-level
a=sendrecv
a=mid:audio
a=rtcp-mux
a=crypto:1 AES_CM_128_HMAC_SHA1_80 inline:QV8HULQ2apfvN2YGZ1chzf5GHSutS0zSa8H2ImaE
a=rtpmap:111 opus/48000/2
a=fmtp:111 minptime=10
a=rtpmap:103 ISAC/16000
a=rtpmap:104 ISAC/32000
a=rtpmap:0 PCMU/8000
a=rtpmap:8 PCMA/8000
a=rtpmap:107 CN/48000
a=rtpmap:106 CN/32000
a=rtpmap:105 CN/16000
a=rtpmap:13 CN/8000
a=rtpmap:126 telephone-event/8000
a=maxptime:60
a=ssrc:2659684898 cname:vKF6ySbKuXQU7izN
a=ssrc:2659684898 msid:ZSPJWL6e1bLZ0FSO4YnMAacXJbAmvzvD62hm ZSPJWL6e1bLZ0FSO4YnMAacXJbAmvzvD62hma0
a=ssrc:2659684898 mslabel:ZSPJWL6e1bLZ0FSO4YnMAacXJbAmvzvD62hm
a=ssrc:2659684898 label:ZSPJWL6e1bLZ0FSO4YnMAacXJbAmvzvD62hma0

2013-11-14 15:05:06 OUT WS /10.166.41.129:18080 > /10.166.41.129:22670

SIP/2.0 200 OK
Call-ID: 0f5b95a6-4443-23de-a85d-5c5fe7b8b763
Contact: <sip:10.166.41.129:18080;transport=ws;appid=1Y6.ML4s7x0fdd>
Content-Length: 1393
Content-Type: application/sdp
CSeq: 24912 INVITE
From: "c"<sip:c...@10.166.41.129:18080>;tag=LsiBZJykVlDcGP5wHKpn
To: <sip:h...@10.166.41.129>;tag=1Y6.ML4s7x0fdd-2aETzm
Via: SIP/2.0/WS df7jal23ls0d.invalid;branch=z9hG4bKGaT1nLWTIo6Z11To2BBQ7fv5h6Tvn8Gx;received=10.166.41.129;rport=22670

v=0
o=- 6084755400264331000 2 IN IP4 127.0.0.1
s=Doubango Telecom - chrome
t=0 0
a=group:BUNDLE audio
a=msid-semantic: WMS ZSPJWL6e1bLZ0FSO4YnMAacXJbAmvzvD62hm
m=audio 60727 RTP/SAVPF 111 103 104 0 8 107 106 105 13 126
c=IN IP4 10.166.41.129
a=rtcp:1 IN IP4 0.0.0.0
a=candidate:2062110140 1 udp 2113937151 10.166.41.129 60727 typ host generation 0
a=candidate:2694876 1 udp 2113937151 10.166.41.109 60728 typ host generation 0
a=candidate:879407436 1 tcp 1509957375 10.166.41.129 0 typ host generation 0
a=candidate:1319821868 1 tcp 1509957375 10.166.41.109 0 typ host generation 0
a=ice-ufrag:4Bq35es6vtzMdrmX
a=ice-pwd:6/7DHPnobgVD/UCV7dQSezf/
a=extmap:1 urn:ietf:params:rtp-hdrext:ssrc-audio-level
a=sendrecv
a=mid:audio
a=rtcp-mux
a=crypto:1 AES_CM_128_HMAC_SHA1_80 inline:QV8HULQ2apfvN2YGZ1chzf5GHSutS0zSa8H2ImaE
a=rtpmap:111 opus/48000/2
a=fmtp:111 minptime=10
a=rtpmap:103 ISAC/16000
a=rtpmap:104 ISAC/32000
a=rtpmap:0 PCMU/8000
a=rtpmap:8 PCMA/8000
a=rtpmap:107 CN/48000
a=rtpmap:106 CN/32000
a=rtpmap:105 CN/16000
a=rtpmap:13 CN/8000
a=rtpmap:126 telephone-event/8000
a=maxptime:60
a=ssrc:2659684898 cname:vKF6ySbKuXQU7izN
a=ssrc:2659684898 msid:ZSPJWL6e1bLZ0FSO4YnMAacXJbAmvzvD62hm ZSPJWL6e1bLZ0FSO4YnMAacXJbAmvzvD62hma0
a=ssrc:2659684898 mslabel:ZSPJWL6e1bLZ0FSO4YnMAacXJbAmvzvD62hm
a=ssrc:2659684898 label:ZSPJWL6e1bLZ0FSO4YnMAacXJbAmvzvD62hma0

2013-11-14 15:05:06 IN  WS /10.166.41.129:18080 < /10.166.41.129:22670

ACK sip:10.166.41.129:18080;transport=ws;appid=1Y6.ML4s7x0fdd SIP/2.0
Call-ID: 0f5b95a6-4443-23de-a85d-5c5fe7b8b763
Contact: "c"<sip:c...@df7jal23ls0d.invalid;rtcweb-breaker=no;click2call=no;transport=ws>;+g.oma.sip-im;+sip.ice
Content-Length: 0
CSeq: 24912 ACK
From: "c"<sip:c...@10.166.41.129:18080>;tag=LsiBZJykVlDcGP5wHKpn
Max-Forwards: 70
Organization: Huawei_UCC
To: <sip:h...@10.166.41.129>;tag=1Y6.ML4s7x0fdd-2aETzm
User-Agent: Espace WebRTC
Via: SIP/2.0/WS df7jal23ls0d.invalid;branch=z9hG4bKR2KkJNpzynw2O0VmF5U1;rport


2013-11-14 15:05:06 OUT WS /10.166.41.129:18080 > /10.166.41.129:22675

ACK sip:h...@10.166.41.129:22675;transport=ws SIP/2.0
Call-ID: 4HTc8YCTNF1@X00197827
CSeq: 1 ACK
From: <sip:c...@10.166.41.129:5060>;tag=1Y6.2hm63VKNOwL-ylCwY
Max-Forwards: 70
To: <sip:h...@10.166.41.129>;tag=9hKxUBp4JEKmGw9eUHZ8
Via: SIP/2.0/WS 10.166.41.129:18080;branch=z9hG4bK44LUSCQAFd
Content-Length: 0


2013-11-14 15:24:25 IN  WS /10.166.41.129:18080 < /10.166.41.129:22670

BYE sip:10.166.41.129:18080;transport=ws;appid=1Y6.ML4s7x0fdd SIP/2.0
Accept-Contact: *;+g.oma.sip-im, *;+sip.ice
Call-ID: 0f5b95a6-4443-23de-a85d-5c5fe7b8b763
Content-Length: 0
CSeq: 24913 BYE
From: "c"<sip:c...@10.166.41.129:18080>;tag=LsiBZJykVlDcGP5wHKpn
Max-Forwards: 70
Organization: Huawei_UCC
To: <sip:h...@10.166.41.129>;tag=1Y6.ML4s7x0fdd-2aETzm
User-Agent: Espace WebRTC
Via: SIP/2.0/WS df7jal23ls0d.invalid;branch=z9hG4bKE0HS6VFohyuZMwP8mFm2tXyHaNT4IXtF;rport


2013-11-14 15:24:25 OUT WS /10.166.41.129:18080 > /10.166.41.129:22670

SIP/2.0 481 No Application Session
Call-ID: 0f5b95a6-4443-23de-a85d-5c5fe7b8b763
CSeq: 24913 BYE
From: "c"<sip:c...@10.166.41.129:18080>;tag=LsiBZJykVlDcGP5wHKpn
To: <sip:h...@10.166.41.129>;tag=1Y6.ML4s7x0fdd-2aETzm
Via: SIP/2.0/WS df7jal23ls0d.invalid;branch=z9hG4bKE0HS6VFohyuZMwP8mFm2tXyHaNT4IXtF;received=10.166.41.129;rport=22670
Content-Length: 0

Nicolas Trangosi

unread,
Nov 14, 2013, 3:24:21 AM11/14/13
to cipan...@googlegroups.com
Hi Mirror,
A 481 is sent on BYE as no SIP application session can be found for the call.
Probably, application session has been invalidated by session timer.

You should add in sip.xml, the snippet:
<session-config>
<session-timeout>-1</session-timeout>
</session-config>

Note: -1 mean no expiration, else value is maximum time between two messages in
minutes before invalidation.

Regards,
Nicolas

Le 14/11/2013 08:56, Mirror Xu a �crit :
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Mirror Xu

unread,
Nov 14, 2013, 6:33:01 AM11/14/13
to cipan...@googlegroups.com, nicolas....@nexcom.fr
Hi Nicolas,

I test the configuration item, and it works!

Thanks very much!

Regards,

Mirror

在 2013年11月14日星期四UTC+8下午4时24分21秒,Nicolas Trangosi写道:
Hi Mirror,
A 481 is sent on BYE as no SIP application session can be found for the call.
Probably, application session has been invalidated by session timer.

You should add in sip.xml, the snippet:
   <session-config>
     <session-timeout>-1</session-timeout>
   </session-config>

Note: -1 mean no expiration, else value is maximum time between two messages in
minutes before invalidation.

Regards,
Nicolas

Le 14/11/2013 08:56, Mirror Xu a �crit :
> Hello,
>
> I am testing VoIP business using cipango as a sip server and I had found a
> question appears occasionally:
>
> The scenes is user c invite user h, user h reply 200 OK, user c send ACK, and
> then user c and user h establish a success sip session. But when I try to end
> the session by send BYE message from user c to the user h, sometimes the BYE
> was sended successfully and sometimes failure because the cipango reply back
> with a [481 No Application Session] message directly. The SIP message and
> session call-id were all correct.
>
> Is there anyone know about this question, help me please!
>
> Best regards,
>
> Mirror
>
> ============================================
> Below is the SIP message flow:
>
> 2013-11-14 15:05:02 IN  WS /10.166.41.129:18080 < /10.166.41.129:22670
>
> INVITE si...@10.166.41.129 SIP/2.0
> Call-ID: 0f5b95a6-4443-23de-a85d-5c5fe7b8b763
> Contact:
> "c"<sip:c...@df7jal23ls0d.invalid;rtcweb-breaker=no;click2call=no;transport=ws>;+g.oma.sip-im;+sip.ice
> Content-Length: 1833
> Content-Type: application/sdp
> CSeq: 24912 INVITE
> From: "c"<sip:c...@10.166.41.129:18080>;tag=LsiBZJykVlDcGP5wHKpn
> Max-Forwards: 70
> Organization: Huawei_UCC
> Via: SIP/2.0/WS
> df7jal23ls0d.invalid;branch=z9hG4bKGaT1nLWTIo6Z11To2BBQ7fv5h6Tvn8Gx;received=10.166.41.129;rport=22670
> Content-Length: 0
>
>
> 2013-11-14 15:05:03 OUT WS /10.166.41.129:18080 > /10.166.41.129:22675
>
> INVITE sip:h...@10.166.41.129:22675;transport=ws SIP/2.0
> Call-ID: 4HTc8YCTNF1@X00197827
> Contact: <sip:10.166.41.129:5060;appid=1Y6.2hm63VKNOwL>
> Content-Length: 1833
> Content-Type: application/sdp
> CSeq: 1 INVITE
> From: <sip:c...@10.166.41.129:5060>;tag=1Y6.2hm63VKNOwL-ylCwY
> Max-Forwards: 70
> Via: SIP/2.0/WS 10.166.41.129:18080;branch=z9hG4bK5D3RExLDLFn
>
>
> 2013-11-14 15:05:04 IN  WS /10.166.41.129:18080 < /10.166.41.129:22675
>
> SIP/2.0 180 Ringing
> Allow: ACK, BYE, CANCEL, INVITE, MESSAGE, NOTIFY, OPTIONS, PRACK, REFER, UPDATE
> Call-ID: 4HTc8YCTNF1@X00197827
> Contact: <sip:h...@df7jal23ls0d.invalid;transport=ws>
> Content-Length: 0
> CSeq: 1 INVITE
> From: <sip:c...@10.166.41.129:5060>;tag=1Y6.2hm63VKNOwL-ylCwY
> To: <si...@10.166.41.129>;tag=9hKxUBp4JEKmGw9eUHZ8
> Via: SIP/2.0/WS 10.166.41.129:18080;branch=z9hG4bK5D3RExLDLFn
>
>
> 2013-11-14 15:05:04 OUT WS /10.166.41.129:18080 > /10.166.41.129:22670
>
> SIP/2.0 180 Ringing
> Call-ID: 0f5b95a6-4443-23de-a85d-5c5fe7b8b763
> Contact: <sip:10.166.41.129:18080;transport=ws;appid=1Y6.ML4s7x0fdd>
> CSeq: 24912 INVITE
> From: "c"<sip:c...@10.166.41.129:18080>;tag=LsiBZJykVlDcGP5wHKpn
> To: <si...@10.166.41.129>;tag=1Y6.ML4s7x0fdd-2aETzm
> Via: SIP/2.0/WS
> df7jal23ls0d.invalid;branch=z9hG4bKGaT1nLWTIo6Z11To2BBQ7fv5h6Tvn8Gx;received=10.166.41.129;rport=22670
> Content-Length: 0
>
>
> 2013-11-14 15:05:06 IN  WS /10.166.41.129:18080 < /10.166.41.129:22675
>
> SIP/2.0 200 OK
> Allow: ACK, BYE, CANCEL, INVITE, MESSAGE, NOTIFY, OPTIONS, PRACK, REFER, UPDATE
> Call-ID: 4HTc8YCTNF1@X00197827
> Contact: <sip:h...@df7jal23ls0d.invalid;transport=ws>
> Content-Length: 1393
> Content-Type: application/sdp
> CSeq: 1 INVITE
> From: <sip:c...@10.166.41.129:5060>;tag=1Y6.2hm63VKNOwL-ylCwY
> To: <si...@10.166.41.129>;tag=9hKxUBp4JEKmGw9eUHZ8
> To: <si...@10.166.41.129>;tag=1Y6.ML4s7x0fdd-2aETzm
> To: <si...@10.166.41.129>;tag=1Y6.ML4s7x0fdd-2aETzm
> User-Agent: Espace WebRTC
> Via: SIP/2.0/WS df7jal23ls0d.invalid;branch=z9hG4bKR2KkJNpzynw2O0VmF5U1;rport
>
>
> 2013-11-14 15:05:06 OUT WS /10.166.41.129:18080 > /10.166.41.129:22675
>
> ACK sip:h...@10.166.41.129:22675;transport=ws SIP/2.0
> Call-ID: 4HTc8YCTNF1@X00197827
> CSeq: 1 ACK
> From: <sip:c...@10.166.41.129:5060>;tag=1Y6.2hm63VKNOwL-ylCwY
> Max-Forwards: 70
> To: <si...@10.166.41.129>;tag=9hKxUBp4JEKmGw9eUHZ8
> Via: SIP/2.0/WS 10.166.41.129:18080;branch=z9hG4bK44LUSCQAFd
> Content-Length: 0
>
>
> 2013-11-14 15:24:25 IN  WS /10.166.41.129:18080 < /10.166.41.129:22670
>
> BYE sip:10.166.41.129:18080;transport=ws;appid=1Y6.ML4s7x0fdd SIP/2.0
> Accept-Contact: *;+g.oma.sip-im, *;+sip.ice
> Call-ID: 0f5b95a6-4443-23de-a85d-5c5fe7b8b763
> Content-Length: 0
> CSeq: 24913 BYE
> From: "c"<sip:c...@10.166.41.129:18080>;tag=LsiBZJykVlDcGP5wHKpn
> Max-Forwards: 70
> Organization: Huawei_UCC
> To: <si...@10.166.41.129>;tag=1Y6.ML4s7x0fdd-2aETzm
> User-Agent: Espace WebRTC
> Via: SIP/2.0/WS
> df7jal23ls0d.invalid;branch=z9hG4bKE0HS6VFohyuZMwP8mFm2tXyHaNT4IXtF;rport
>
>
> 2013-11-14 15:24:25 OUT WS /10.166.41.129:18080 > /10.166.41.129:22670
>
> SIP/2.0 481 No Application Session
> Call-ID: 0f5b95a6-4443-23de-a85d-5c5fe7b8b763
> CSeq: 24913 BYE
> From: "c"<sip:c...@10.166.41.129:18080>;tag=LsiBZJykVlDcGP5wHKpn
> To: <si...@10.166.41.129>;tag=1Y6.ML4s7x0fdd-2aETzm
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