[sr-dev] t_check_trans with in-dialog requests
Hugh Waite
hugh.waite at crocodile-rcs.com
Mon Jul 15 10:28:30 CEST 2013
Hi,
I've attached the signalling trace of this call.
The ACK does have a Route set, but we think this is correct according to
§17.1.1.3 of RFC3261.
" If the INVITE request whose response is being acknowledged had Route
header fields, those header fields MUST appear in the ACK. This is to
ensure that the ACK can be routed properly through any downstream
stateless proxies. "
A failure response to an INVITE does not have a Contact header and a
reINVITE does not Record-Route, so the ACK needs to be constructed in
the same way as the INVITE w.r.t. request URI and Route set.
When the ACK for the 407 arrives, can kamailio detect that the
transaction is in the 'Completed' state and drop it [1]?
Hugh
[1] RFC 6026 §8.6 which updates RFC3261 §17.2.1
On 12/07/2013 16:22, Daniel-Constantin Mierla wrote:
> Hello,
>
> iirc, ACKs for negative replies should be hop-by-hop, without any
> route set. Maybe you can paste a ngrep with invite/407/ack to see
> exactly what is there.
>
> On the other hand, t_check_trans() for ack returns true if there is an
> active invite transaction associated with it, because ack itself does
> not create transaction, being a request that doesn't take a reply.
>
> Cheers,
> Daniel
>
> On 7/12/13 5:11 PM, Hugh Waite wrote:
>> Hello,
>> I have a question on the use of t_check_trans for in-dialog requests.
>>
>> If an in-dialog INVITE is challenged by kamailio (sending a 407
>> response), the ACK should be absorbed. However, the t_check_trans
>> function does not terminate the script. In our config, this means the
>> ACK gets sent to the client due to the route-set.
>>
>> Should t_check_trans recognise that this transaction was rejected
>> locally, even though there is an onward route-set?
>>
>> Hugh
>>
>
--
Hugh Waite
Principal Design Engineer
Crocodile RCS Ltd.
-------------- next part --------------
-- INVITE ->
<- 407 --
-- ACK ->
-- INVITE ->
<- 200 --
-- ACK ->
--reINVITE->
<- 407 --
-- ACK -> ACK (forwarded onward to a GRUU destination)
--reINVITE->
<- 200 --
-- ACK ->
-- BYE ->
<- 200 --
INVITE sip:test_account2 at crocodilertc.net SIP/2.0
Record-Route: <sip:mWtTXMYjkoKwvgYK9JufAbtamABm4BY=@10.244.155.159:5080;transport=tcp;r2=on;lr=on>
Record-Route: <sip:mWtTXMYjkoKwvgYK9JufAbtamABm4BY=@23.21.223.36:443;transport=ws;r2=on;lr=on>
Via: SIP/2.0/TCP 10.244.155.159:5080;branch=z9hG4bK0604.d848dcd6.0
Via: SIP/2.0/WSS 3k2popdrtjv3.invalid;rport=57366;received=x.x.x.x;branch=z9hG4bK7682252
Max-Forwards: 16
To: <sip:test_account2 at crocodilertc.net>
From: "Unit Tester #1" <sip:test_account at crocodilertc.net>;tag=607jqg3rfb
Call-ID: rthucd1f6ebvvj4lh7e
CSeq: 1822 INVITE
Call-Info: <xmpp:test_account at crocodilertc.net> ;purpose=impp
Contact: <sip:test_account at crocodilertc.net;gr=urn:uuid:67f9ccdb-33c0-4e02-b90b-51bd97167a0f;ob>;audio;video;text;data;+croc.sdkversion="<1>"
Allow: ACK,CANCEL,BYE,OPTIONS,INVITE,MESSAGE,UPDATE
Content-Type: application/sdpSupported: path, outbound, gruu
User-Agent: Crocodile SDK v<%= pkg.version %>; JsSIP 0.3.0-crocodile-1-devel; Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/27.0.1453.116 Safari/537.36
Content-Length: 2044
SIP/2.0 407 Proxy Authentication RequiredVia: SIP/2.0/TCP 10.244.155.159:5080;branch=z9hG4bK0604.d848dcd6.0
Via: SIP/2.0/WSS 3k2popdrtjv3.invalid;rport=57366;received=x.x.x.x;branch=z9hG4bK7682252
To: <sip:test_account2 at crocodilertc.net>;tag=8ab1eb0246bb313f703b656487ebc696.ca77
From: "Unit Tester #1" <sip:test_account at crocodilertc.net>;tag=607jqg3rfbCall-ID: rthucd1f6ebvvj4lh7eb
CSeq: 1822 INVITE
Proxy-Authenticate: Digest realm="crocodilertc.net", nonce="UeAAk1Hf/2dJwku6QyX07P8PbqgUemWEJf6hC4A="
Server: Crocodile RTC Network v0.1
Content-Length: 0
ACK sip:test_account2 at crocodilertc.net SIP/2.0Via: SIP/2.0/TCP 10.244.155.159:5080;branch=z9hG4bK0604.d848dcd6.0
Max-Forwards: 16
To: <sip:test_account2 at crocodilertc.net>;tag=8ab1eb0246bb313f703b656487ebc696.ca77
From: "Unit Tester #1" <sip:test_account at crocodilertc.net>;tag=607jqg3rfbCall-ID: rthucd1f6ebvvj4lh7eb
CSeq: 1822 ACK
Content-Length: 0
INVITE sip:test_account2 at crocodilertc.net SIP/2.0
Record-Route: <sip:mWtTXMYjkoKwvgYK9JufAbtamABm4BY=@10.244.155.159:5080;transport=tcp;r2=on;lr=on>
Record-Route: <sip:mWtTXMYjkoKwvgYK9JufAbtamABm4BY=@23.21.223.36:443;transport=ws;r2=on;lr=on>
Via: SIP/2.0/TCP 10.244.155.159:5080;branch=z9hG4bK1604.9e74acd5.0
Via: SIP/2.0/WSS 3k2popdrtjv3.invalid;rport=57366;received=x.x.x.x;branch=z9hG4bK5792651
Max-Forwards: 16To: <sip:test_account2 at crocodilertc.net>
From: "Unit Tester #1" <sip:test_account at crocodilertc.net>;tag=607jqg3rfb
Call-ID: rthucd1f6ebvvj4lh7ebCSeq: 1823 INVITE
Proxy-Authorization: Digest algorithm=MD5, username="test_account", realm="crocodilertc.net", nonce="UeAAk1Hf/2dJwku6QyX07P8PbqgUemWEJf6hC4A=", uri="sip:test_account2 at crocodilertc.net", response="898cecf3c396fcbcff36311599b00402"
Call-Info: <xmpp:test_account at crocodilertc.net> ;purpose=impp
Contact: <sip:test_account at crocodilertc.net;gr=urn:uuid:67f9ccdb-33c0-4e02-b90b-51bd97167a0f;ob>;audio;video;text;data;+croc.sdkversion="<1>"
Allow: ACK,CANCEL,BYE,OPTIONS,INVITE,MESSAGE,UPDATE
Content-Type: application/sdp
Supported: path, outbound, gruu
User-Agent: Crocodile SDK v<%= pkg.version %>; JsSIP 0.3.0-crocodile-1-devel; Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/27.0.1453.116 Safari/537.36
Content-Length: 2044
SIP/2.0 100 TryingVia: SIP/2.0/TCP 10.244.155.159:5080;branch=z9hG4bK1604.9e74acd5.0
Via: SIP/2.0/WSS 3k2popdrtjv3.invalid;rport=57366;received=x.x.x.x;branch=z9hG4bK5792651To: <sip:test_account2 at crocodilertc.net>
From: "Unit Tester #1" <sip:test_account at crocodilertc.net>;tag=607jqg3rfbCall-ID: rthucd1f6ebvvj4lh7eb
CSeq: 1823 INVITE
Server: Crocodile RTC Network v0.1
Content-Length: 0
SIP/2.0 180 Ringing
Record-Route: <sip:9ypJQOl3SnyGvwYK9JufAbtamABm4Bk=@23.21.223.36:443;transport=ws;r2=on;lr=on>
Record-Route: <sip:9ypJQOl3SnyGvwYK9JufAbtamABm4Bk=@10.244.155.159:5080;transport=tcp;r2=on;lr=on>
Record-Route: <sip:registrar-int.crocodilertc.net;transport=tcp;lr=on>
Record-Route: <sip:mWtTXMYjkoKwvgYK9JufAbtamABm4BY=@10.244.155.159:5080;transport=tcp;r2=on;lr=on>
Record-Route: <sip:mWtTXMYjkoKwvgYK9JufAbtamABm4BY=@23.21.223.36:443;transport=ws;r2=on;lr=on>
Via: SIP/2.0/TCP 10.244.155.159:5080;branch=z9hG4bK1604.9e74acd5.0
Via: SIP/2.0/WSS 3k2popdrtjv3.invalid;rport=57366;received=x.x.x.x;branch=z9hG4bK5792651
To: <sip:test_account2 at crocodilertc.net>;tag=o5ans6hai1
From: "Unit Tester #1" <sip:test_account at crocodilertc.net>;tag=607jqg3rfb
Call-ID: rthucd1f6ebvvj4lh7eb
CSeq: 1823 INVITE
Contact: <sip:test_account2 at crocodilertc.net;gr=urn:uuid:64d2b8e8-33db-4f49-a885-f2239671426b>;audio;video;text;data;+croc.sdkversion="<1>"
User-Agent: Crocodile SDK v<%= pkg.version %>; JsSIP 0.3.0-crocodile-1-devel; Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/27.0.1453.116 Safari/537.36
Content-Length: 0
SIP/2.0 200 OK
Record-Route: <sip:9ypJQOl3SnyGvwYK9JufAbtamABm4Bk=@23.21.223.36:443;transport=ws;r2=on;lr=on>
Record-Route: <sip:9ypJQOl3SnyGvwYK9JufAbtamABm4Bk=@10.244.155.159:5080;transport=tcp;r2=on;lr=on>
Record-Route: <sip:registrar-int.crocodilertc.net;transport=tcp;lr=on>
Record-Route: <sip:mWtTXMYjkoKwvgYK9JufAbtamABm4BY=@10.244.155.159:5080;transport=tcp;r2=on;lr=on>
Record-Route: <sip:mWtTXMYjkoKwvgYK9JufAbtamABm4BY=@23.21.223.36:443;transport=ws;r2=on;lr=on>
Via: SIP/2.0/TCP 10.244.155.159:5080;branch=z9hG4bK1604.9e74acd5.0
Via: SIP/2.0/WSS 3k2popdrtjv3.invalid;rport=57366;received=x.x.x.x;branch=z9hG4bK5792651To: <sip:test_account2 at crocodilertc.net>;tag=o5ans6hai1
From: "Unit Tester #1" <sip:test_account at crocodilertc.net>;tag=607jqg3rfb
Call-ID: rthucd1f6ebvvj4lh7eb
CSeq: 1823 INVITE
Contact: <sip:test_account2 at crocodilertc.net;gr=urn:uuid:64d2b8e8-33db-4f49-a885-f2239671426b>;audio;video;text;data;+croc.sdkversion="<1>"
Allow: ACK,CANCEL,BYE,OPTIONS,INVITE,MESSAGE,UPDATE
User-Agent: Crocodile SDK v<%= pkg.version %>; JsSIP 0.3.0-crocodile-1-devel; Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/27.0.1453.116 Safari/537.36
Content-Type: application/sdp
Content-Length: 1484
ACK sip:test_account2 at crocodilertc.net;gr=urn:uuid:64d2b8e8-33db-4f49-a885-f2239671426b SIP/2.0
Route: <sip:registrar-int.crocodilertc.net;transport=tcp;lr=on>
Route: <sip:9ypJQOl3SnyGvwYK9JufAbtamABm4Bk=@10.244.155.159:5080;transport=tcp;r2=on;lr=on>
Route: <sip:9ypJQOl3SnyGvwYK9JufAbtamABm4Bk=@23.21.223.36:443;transport=ws;r2=on;lr=on>
Via: SIP/2.0/TCP 10.244.155.159:5080;branch=z9hG4bKcydzigwkX
Via: SIP/2.0/WSS 3k2popdrtjv3.invalid;rport=57366;received=x.x.x.x;branch=z9hG4bK908182
Max-Forwards: 16To: <sip:test_account2 at crocodilertc.net>;tag=o5ans6hai1
From: "Unit Tester #1" <sip:test_account at crocodilertc.net>;tag=607jqg3rfb
Call-ID: rthucd1f6ebvvj4lh7ebCSeq: 1823 ACKSupported: path, outbound, gruu
User-Agent: Crocodile SDK v<%= pkg.version %>; JsSIP 0.3.0-crocodile-1-devel; Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/27.0.1453.116 Safari/537.36
Content-Length: 0
INVITE sip:test_account2 at crocodilertc.net;gr=urn:uuid:64d2b8e8-33db-4f49-a885-f2239671426b SIP/2.0
Route: <sip:registrar-int.crocodilertc.net;transport=tcp;lr=on>
Route: <sip:9ypJQOl3SnyGvwYK9JufAbtamABm4Bk=@10.244.155.159:5080;transport=tcp;r2=on;lr=on>
Route: <sip:9ypJQOl3SnyGvwYK9JufAbtamABm4Bk=@23.21.223.36:443;transport=ws;r2=on;lr=on>
Via: SIP/2.0/TCP 10.244.155.159:5080;branch=z9hG4bKe504.37b598a.0
Via: SIP/2.0/WSS 3k2popdrtjv3.invalid;rport=57366;received=x.x.x.x;branch=z9hG4bK808989
Max-Forwards: 16
To: <sip:test_account2 at crocodilertc.net>;tag=o5ans6hai1
From: "Unit Tester #1" <sip:test_account at crocodilertc.net>;tag=607jqg3rfbCall-ID: rthucd1f6ebvvj4lh7ebCSeq: 1824 INVITE
Contact: <sip:test_account at crocodilertc.net;gr=urn:uuid:67f9ccdb-33c0-4e02-b90b-51bd97167a0f;ob>;audio;video;text;data;+croc.sdkversion="<1>"
Allow: ACK,CANCEL,BYE,OPTIONS,INVITE,MESSAGE,UPDATE
Content-Type: application/sdp
Supported: path, outbound, gruu
User-Agent: Crocodile SDK v<%= pkg.version %>; JsSIP 0.3.0-crocodile-1-devel; Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/27.0.1453.116 Safari/537.36
Content-Length: 2044
SIP/2.0 407 Proxy Authentication Required
Via: SIP/2.0/TCP 10.244.155.159:5080;branch=z9hG4bKe504.37b598a.0
Via: SIP/2.0/WSS 3k2popdrtjv3.invalid;rport=57366;received=x.x.x.x;branch=z9hG4bK808989
To: <sip:test_account2 at crocodilertc.net>;tag=o5ans6hai1
From: "Unit Tester #1" <sip:test_account at crocodilertc.net>;tag=607jqg3rfb
Call-ID: rthucd1f6ebvvj4lh7ebCSeq: 1824 INVITE
Proxy-Authenticate: Digest realm="crocodilertc.net", nonce="UeAAnVHf/3Ed4WOT63129yhS++UHeIQwJf6jDYA="
Server: Crocodile RTC Network v0.1
Content-Length: 0
ACK sip:test_account2 at crocodilertc.net;gr=urn:uuid:64d2b8e8-33db-4f49-a885-f2239671426b SIP/2.0
Route: <sip:registrar-int.crocodilertc.net;transport=tcp;lr=on>
Route: <sip:9ypJQOl3SnyGvwYK9JufAbtamABm4Bk=@10.244.155.159:5080;transport=tcp;r2=on;lr=on>
Route: <sip:9ypJQOl3SnyGvwYK9JufAbtamABm4Bk=@23.21.223.36:443;transport=ws;r2=on;lr=on>
Via: SIP/2.0/TCP 10.244.155.159:5080;branch=z9hG4bKe504.37b598a.0
Max-Forwards: 16
To: <sip:test_account2 at crocodilertc.net>;tag=o5ans6hai1
From: "Unit Tester #1" <sip:test_account at crocodilertc.net>;tag=607jqg3rfb
Call-ID: rthucd1f6ebvvj4lh7eb
CSeq: 1824 ACK
Content-Length: 0
ACK sip:p5herifi at 0gsinkjl64q6.invalid;transport=ws SIP/2.0
Route: <sip:9ypJQOl3SnyGvwYK9JufAbtamABm4Bk=@10.244.155.159:5080;transport=tcp;lr;ob>
Via: SIP/2.0/TCP registrar-int.crocodilertc.net:5060;branch=z9hG4bKe504.88707ed18ee87a52179374b5628e6b92.0;i=41
Via: SIP/2.0/TCP 10.244.155.159:5080;branch=z9hG4bKe504.37b598a.0
Max-Forwards: 15
To: <sip:test_account2 at crocodilertc.net>;tag=o5ans6hai1
From: "Unit Tester #1" <sip:test_account at crocodilertc.net>;tag=607jqg3rfb
Call-ID: rthucd1f6ebvvj4lh7eb
CSeq: 1824 ACK
Content-Length: 0
INVITE sip:test_account2 at crocodilertc.net;gr=urn:uuid:64d2b8e8-33db-4f49-a885-f2239671426b SIP/2.0
Route: <sip:registrar-int.crocodilertc.net;transport=tcp;lr=on>
Route: <sip:9ypJQOl3SnyGvwYK9JufAbtamABm4Bk=@10.244.155.159:5080;transport=tcp;r2=on;lr=on>
Route: <sip:9ypJQOl3SnyGvwYK9JufAbtamABm4Bk=@23.21.223.36:443;transport=ws;r2=on;lr=on>
Via: SIP/2.0/TCP 10.244.155.159:5080;branch=z9hG4bKf504.3fd7b413.0
Via: SIP/2.0/WSS 3k2popdrtjv3.invalid;rport=57366;received=x.x.x.x;branch=z9hG4bK6449637
Max-Forwards: 16To: <sip:test_account2 at crocodilertc.net>;tag=o5ans6hai1
From: "Unit Tester #1" <sip:test_account at crocodilertc.net>;tag=607jqg3rfb
Call-ID: rthucd1f6ebvvj4lh7eb
CSeq: 1825 INVITE
Proxy-Authorization: Digest algorithm=MD5, username="test_account", realm="crocodilertc.net", nonce="UeAAnVHf/3Ed4WOT63129yhS++UHeIQwJf6jDYA=", uri="sip:test_account2 at crocodilertc.net;gr=urn:uuid:64d2b8e8-33db-4f49-a885-f2239671426b", response="81982018f74134f6545bdc169e360bda"
Contact: <sip:test_account at crocodilertc.net;gr=urn:uuid:67f9ccdb-33c0-4e02-b90b-51bd97167a0f;ob>;audio;video;text;data;+croc.sdkversion="<1>"
Allow: ACK,CANCEL,BYE,OPTIONS,INVITE,MESSAGE,UPDATE
Content-Type: application/sdp
Supported: path, outbound, gruu
User-Agent: Crocodile SDK v<%= pkg.version %>; JsSIP 0.3.0-crocodile-1-devel; Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/27.0.1453.116 Safari/537.36
Content-Length: 2044
SIP/2.0 100 Trying
Via: SIP/2.0/TCP 10.244.155.159:5080;branch=z9hG4bKf504.3fd7b413.0
Via: SIP/2.0/WSS 3k2popdrtjv3.invalid;rport=57366;received=x.x.x.x;branch=z9hG4bK6449637
To: <sip:test_account2 at crocodilertc.net>;tag=o5ans6hai1
From: "Unit Tester #1" <sip:test_account at crocodilertc.net>;tag=607jqg3rfb
Call-ID: rthucd1f6ebvvj4lh7eb
CSeq: 1825 INVITE
Server: Crocodile RTC Network v0.1
Content-Length: 0
SIP/2.0 200 OK
Via: SIP/2.0/TCP 10.244.155.159:5080;branch=z9hG4bKf504.3fd7b413.0
Via: SIP/2.0/WSS 3k2popdrtjv3.invalid;rport=57366;received=x.x.x.x;branch=z9hG4bK6449637
To: <sip:test_account2 at crocodilertc.net>;tag=o5ans6hai1
From: "Unit Tester #1" <sip:test_account at crocodilertc.net>;tag=607jqg3rfb
Call-ID: rthucd1f6ebvvj4lh7eb
CSeq: 1825 INVITE
Contact: <sip:test_account2 at crocodilertc.net;gr=urn:uuid:64d2b8e8-33db-4f49-a885-f2239671426b>;audio;video;text;data;+croc.sdkversion="<1>"
Allow: ACK,CANCEL,BYE,OPTIONS,INVITE,MESSAGE,UPDATEContent-Type: application/sdp
User-Agent: Crocodile SDK v<%= pkg.version %>; JsSIP 0.3.0-crocodile-1-devel; Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/27.0.1453.116 Safari/537.36
Content-Type: application/sdp
Content-Length: 1484
ACK sip:test_account2 at crocodilertc.net;gr=urn:uuid:64d2b8e8-33db-4f49-a885-f2239671426b SIP/2.0
Route: <sip:registrar-int.crocodilertc.net;transport=tcp;lr=on>
Route: <sip:9ypJQOl3SnyGvwYK9JufAbtamABm4Bk=@10.244.155.159:5080;transport=tcp;r2=on;lr=on>
Route: <sip:9ypJQOl3SnyGvwYK9JufAbtamABm4Bk=@23.21.223.36:443;transport=ws;r2=on;lr=on>
Via: SIP/2.0/TCP 10.244.155.159:5080;branch=z9hG4bKcydzigwkX
Via: SIP/2.0/WSS 3k2popdrtjv3.invalid;rport=57366;received=x.x.x.x;branch=z9hG4bK3640077
Max-Forwards: 16
To: <sip:test_account2 at crocodilertc.net>;tag=o5ans6hai1
From: "Unit Tester #1" <sip:test_account at crocodilertc.net>;tag=607jqg3rfb
Call-ID: rthucd1f6ebvvj4lh7eb
CSeq: 1825 ACK
Supported: path, outbound, gruu
User-Agent: Crocodile SDK v<%= pkg.version %>; JsSIP 0.3.0-crocodile-1-devel; Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/27.0.1453.116 Safari/537.36
Content-Length: 0
BYE sip:test_account2 at crocodilertc.net;gr=urn:uuid:64d2b8e8-33db-4f49-a885-f2239671426b SIP/2.0
Route: <sip:registrar-int.crocodilertc.net;transport=tcp;lr=on>
Route: <sip:9ypJQOl3SnyGvwYK9JufAbtamABm4Bk=@10.244.155.159:5080;transport=tcp;r2=on;lr=on>
Route: <sip:9ypJQOl3SnyGvwYK9JufAbtamABm4Bk=@23.21.223.36:443;transport=ws;r2=on;lr=on>
Via: SIP/2.0/TCP 10.244.155.159:5080;branch=z9hG4bKc504.249e0a47.0
Via: SIP/2.0/WSS 3k2popdrtjv3.invalid;rport=57366;received=x.x.x.x;branch=z9hG4bK5061044
Max-Forwards: 16
To: <sip:test_account2 at crocodilertc.net>;tag=o5ans6hai1
From: "Unit Tester #1" <sip:test_account at crocodilertc.net>;tag=607jqg3rfb
Call-ID: rthucd1f6ebvvj4lh7ebCSeq: 1826 BYESupported: path, outbound, gruu
User-Agent: Crocodile SDK v<%= pkg.version %>; JsSIP 0.3.0-crocodile-1-devel; Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/27.0.1453.116 Safari/537.36
Content-Length: 0
SIP/2.0 200 OK
Via: SIP/2.0/TCP 10.244.155.159:5080;branch=z9hG4bKc504.249e0a47.0
Via: SIP/2.0/WSS 3k2popdrtjv3.invalid;rport=57366;received=x.x.x.x;branch=z9hG4bK5061044
To: <sip:test_account2 at crocodilertc.net>;tag=o5ans6hai1
From: "Unit Tester #1" <sip:test_account at crocodilertc.net>;tag=607jqg3rfb
Call-ID: rthucd1f6ebvvj4lh7eb
CSeq: 1826 BYE
User-Agent: Crocodile SDK v<%= pkg.version %>; JsSIP 0.3.0-crocodile-1-devel; Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/27.0.1453.116 Safari/537.36
Content-Length: 0
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