Peter Dunkley writes:
> If the edge proxy does not add a flow-token to the Path: header how will
> INVITEs ever get to client devices behind NATs?
they do, because when ua behind NAT registers, edge proxy adds received
param to path header that contains the ip address/port of the ua at the
nat box.
i just tested and it worked fine.
register from edge proxy to registrar (note received in path header):
Session Initiation Protocol
Request-Line: REGISTER sip:test.fi SIP/2.0
Message Header
Via: SIP/2.0/TCP
192.98.102.10:5070;branch=z9hG4bKf1e.275e3219c0b2e50b00e32ce46abf509c.0
Via: SIP/2.0/WS
lkh33af7k3up.invalid;rport=62121;received=192.98.104.2;branch=z9hG4bK2333142
Max-Forwards: 16
To: <sip:[email protected]>
From: "Juha Heinanen" <sip:[email protected]>;tag=hesufr3300
Call-ID: fv0rqlp5tcdv2uden3grb6
CSeq: 88 REGISTER
Contact:
<sip:[email protected];transport=ws>;reg-id=1;+sip.instance="<urn:uuid:480356d7-8507-4ad8-bf27-292d463224f2>";expires=600
Allow: ACK,CANCEL,BYE,OPTIONS,INVITE,MESSAGE
Supported: path, outbound, gruu
User-Agent: JsSIP 0.3.0
Content-Length: 0
Path:
<sip:192.98.102.10:5070;transport=tcp;lr;received=sip:192.98.104.2:62121%3Btransport%3Dws>
invite from registrar/home proxy to edge proxy (note route header
containing received):
Session Initiation Protocol
Request-Line: INVITE sip:[email protected];transport=ws SIP/2.0
Message Header
Record-Route: <sip:192.98.102.20:5070;transport=tcp;r2=on;lr>
Record-Route: <sip:192.98.102.20;transport=tcp;r2=on;lr>
Via: SIP/2.0/TCP
192.98.102.20:5070;branch=z9hG4bKd777.2d854da9ddf108b1a4f6278cdd384c2b.0;i=2
Via: SIP/2.0/TCP
192.98.102.10:5064;branch=z9hG4bKbd2c5fb6ce49eaec;rport=51603
Contact:
<sip:[email protected]:5064;alias=192.98.102.10~51603~2;transport=tcp>
Max-Forwards: 16
Route:
<sip:192.98.102.10:5070;transport=tcp;lr;received=sip:192.98.104.2:62121%3Btransport%3Dws>
To: <sip:[email protected]>
From: "" <sip:[email protected]>;tag=c8c7348f9ae4a7d4
Call-ID: 4095ecb4e893586f
CSeq: 33849 INVITE
User-Agent: baresip v0.4.3 (x86_64/linux)
Allow: INVITE,ACK,BYE,CANCEL,REFER,NOTIFY,SUBSCRIBE,INFO
Content-Type: application/sdp
Content-Length: 521
P-Asserted-Identity: <sip:[email protected]>
Message Body
-- juha
_______________________________________________
sr-dev mailing list
[email protected]
http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-dev
