In WebRTC (websocket) the contact header always has invalid URI, so, you MUST either use path module OR add contact alias for both REGISTER and SUBSCRIBE requests otherwise any subsequent incoming SIP requests such as INVITE and NOTIFY won't be routed to endpoint (SIP client).

See websocket module documentation which has an example configuration script for handling these requests.

Kind regards,

--
Muhammad Shahzad Shafi
Tel: +49 176 99 83 10 85


On Tue, Dec 20, 2022, 13:40 Giovanni Iamonte <iamonte@quintetto.it> wrote:

Dear List

We have configured kamailio to work as a proxy edge and register.

As a proxy edge cfg file we have used the example edge_websocket.cfg.

We are developing two different client the first one based on PJSIP and the other one based JsSIP.

Client PJSIP (no websockets)
everything work perfectly, REGISTER, SUBSCRIBE, NOTIFY, PUBLISH, MESSAGE, INVITE

Client JsSIP (with websockets)
The REGISTER, SUBSCRIBE works, the NOTIFY does not work.
In more in details we have:

   Browser                    Proxy Edge                        Register
Client JsSIP                   Websocket
  |                                |                                |
  |                                |                                |
  | ----------Register-----------> | -----------Register----------> |
  | <----------200 OK  ----------- | <----------200 OK  ----------- |
  |                                |                                |
  | ----------Subscribe----------> | -----------Subscribe---------> |
  | <----------200 OK  ----------- | <----------200 OK  ----------- |
  |                                |                                |
  |                          X<--- | <----------NOTIFY  ----------- |
  |                                |                                |


As you can see the NOTIFY start from Register and reach the proxy, beloe the Register log file and the sip messages.

Could somebody put me in the right direction.

Thanks

Bye


Log File

Dec 20 10:51:58 kr-server /usr/sbin/kamailio[87875]: DEBUG: <core> [core/tcp_read.c:1533]: tcp_read_req(): content-length=0
Dec 20 10:51:58 kr-server /usr/sbin/kamailio[87875]: DEBUG: <core> [core/parser/parse_fline.c:249]: parse_first_line(): first line type 2 (reply(status)) flags 1
Dec 20 10:51:58 kr-server /usr/sbin/kamailio[87875]: DEBUG: <core> [core/parser/msg_parser.c:689]: parse_msg(): SIP Reply  (status):
Dec 20 10:51:58 kr-server /usr/sbin/kamailio[87875]: DEBUG: <core> [core/parser/msg_parser.c:690]: parse_msg():  version: <SIP/2.0>
Dec 20 10:51:58 kr-server /usr/sbin/kamailio[87875]: DEBUG: <core> [core/parser/msg_parser.c:692]: parse_msg():  status:  <478>
Dec 20 10:51:58 kr-server /usr/sbin/kamailio[87875]: DEBUG: <core> [core/parser/msg_parser.c:694]: parse_msg():  reason:  <Unresolvable destination (478/SL)>
Dec 20 10:51:58 kr-server /usr/sbin/kamailio[87875]: DEBUG: <core> [core/parser/parse_hname2.c:301]: parse_sip_header_name(): parsed header name [Via] type 1

Sip Messages

REGISTER sip:sip-register.quintetto.it SIP/2.0
Via: SIP/2.0/WSS 13569868356.invalid;branch=z9hG4bK7825787
Max-Forwards: 69
To: <sip:quintetto00@sip-register.quintetto.it>
From: "quintetto00" <sip:quintetto00@sip-register.quintetto.it>;tag=2tnuk9btmp
Call-ID: unrnseei8924hf67khoi3g
CSeq: 2 REGISTER
Authorization: Digest algorithm=MD5, username="quintetto00", realm="sip-register.quintetto.it", nonce="Y6GUq2Ohk3//HTza7ZYMfd85XMdavgnc", uri="sip:sip-register.quintetto.it", response="c9cc56d2d5e36b0a68873c1d5258d062"
Contact: <sip:quintetto00@13569868356.invalid;transport=ws>;+sip.ice;reg-id=1;+sip.instance="<urn:uuid:64e71c57-fd55-4868-be2b-a4a3fa546ac8>";expires=3600
Expires: 3600
Allow: INVITE,ACK,CANCEL,BYE,UPDATE,MESSAGE,OPTIONS,REFER,INFO,NOTIFY,SUBSCRIBE,PUBLISH
Supported: path,gruu,outbound
User-Agent: JsSIP 3.10.0
Content-Length: 0


SIP/2.0 200 OK
Via: SIP/2.0/WSS 13569868356.invalid;rport=37566;received=192.168.100.192;branch=z9hG4bK7825787
To: <sip:quintetto00@sip-register.quintetto.it>;tag=2b789d0fa67ad6c2da65f0cce35dd60b.71a84df9
From: "quintetto00" <sip:quintetto00@sip-register.quintetto.it>;tag=2tnuk9btmp
Call-ID: unrnseei8924hf67khoi3g
CSeq: 2 REGISTER
Contact: <sip:quintetto00@13569868356.invalid;transport=ws>;expires=3600;+sip.instance="<urn:uuid:64e71c57-fd55-4868-be2b-a4a3fa546ac8>";reg-id=1
Server: kamailio (5.6.2 (x86_64/linux))
Content-Length: 0



SUBSCRIBE sip:quintetto03@sip-register.quintetto.it SIP/2.0
Via: SIP/2.0/WSS 13569868356.invalid;branch=z9hG4bK3648599
Max-Forwards: 69
To: <sip:quintetto03@sip-register.quintetto.it>
From: "quintetto00" <sip:quintetto00@sip-register.quintetto.it>;tag=o261bh2uh7
Call-ID: 4beh90hur8hdhptnbjt8
CSeq: 5813 SUBSCRIBE
Proxy-Authorization: Digest algorithm=MD5, username="quintetto00", realm="sip-register.quintetto.it", nonce="Y6GU+mOhk86y3fnrMzoKgiVAdkaTvBId", uri="sip:quintetto03@sip-register.quintetto.it", response="04ca6d83661ac338810baa95ffaa568b"
Event: presence
Expires: 3600
Accept: application/pidf+xml, application/xpidf+xml
Contact: <sip:quintetto00@13569868356.invalid;transport=ws>
Content-Type: application/pidf+xml
Allow: INVITE,ACK,CANCEL,BYE,UPDATE,MESSAGE,OPTIONS,REFER,INFO,NOTIFY,SUBSCRIBE,PUBLISH
Supported: outbound
User-Agent: JsSIP 3.10.0
Content-Length: 35



SIP/2.0 200 OK
Record-Route: <sip:192.168.100.24:15006;transport=tcp;r2=on;lr>
Record-Route: <sip:192.168.100.24:16005;transport=ws;r2=on;lr>
Via: SIP/2.0/WSS 13569868356.invalid;rport=37566;received=192.168.100.192;branch=z9hG4bK3648599
To: <sip:quintetto03@sip-register.quintetto.it>;tag=c906ce7d8b5c7cc84a3505ebe369640b-e45527ec
From: "quintetto00" <sip:quintetto00@sip-register.quintetto.it>;tag=o261bh2uh7
Call-ID: 4beh90hur8hdhptnbjt8
CSeq: 5813 SUBSCRIBE
Expires: 3600
Contact: <sip:192.168.100.23:15006;transport=tcp>
Server: kamailio (5.6.2 (x86_64/linux))
Content-Length: 0



NOTIFY.sip:quintetto00@13569868356.invalid;transport=ws.SIP/2.0
Via:.SIP/2.0/TCP.1 92.168.100.23:15 006;branch=z9hG4bK28ad.a5d3bdf6000000000000000000000000.0
To: <sip:quintetto00@sip-register.quintetto.it>;tag=o261bh2uh7
From: <sip:quintetto03@sip-register.quintetto.it>;tag=c906ce7d8b5c7cc84a3505ebe369640b-e45527ec
CSeq : 2 NOTIFY
Call-ID:.4beh90hur8h dhptnbjt8
Route : <sip:192.168.1 00.24:15006;transport=tcp;r2=on;lr>,.<sip:192.16 8.100.24:16005;transport=ws;r2=on;lr>
Content-Length:.0
User-Agent: kamailio.(5.6.2.(x86_64/li nux))
Max-Forwards:.70
Event: presence
Contact:.<sip:192.168.100.23:15006;transport=tcp>
Subscription-State: active;expires= 3600

SIP/2.0.478.Unresolvable.destination.(478/SL)
Via: SIP/2.0/TC P.192.168.100.23 :15006;branch=z9hG4bK28ad.a5d3bdf6000000000000000000000000.0;rport=38019
To:.<sip:quintetto00@s ip-register.quintetto.it>;tag=o261bh2uh7
From: <sip:quintetto03 @sip-register.quintetto.it>;tag=c906ce7d8b5c7cc84a3505ebe369640b-e45527ec
CSeq: 2 NOTIFY
Call-ID: 4beh90hur8hdhptnbjt8
Server :.kamailio.(5.6.2.(x86_64/linux))
Content-Length: 0

SIP/2.0.478.Unresolvable.destination.(478/TM)
Via: SIP/2.0/TC P.192.168.100.23:15006;branch=z9hG4bK28ad.a5d3bdf6000000000000000000000000.0;rport=38019
To: <sip:quintetto00@s ip-register.quintetto.it>;tag=o261bh2uh7
From: <sip:quintetto03 @sip-register.quintetto.it>;tag=c906ce7d8b5c7cc84a3505ebe369640b-e45527ec
CSeq: 2 NOTIFY
Call-ID: 4beh90hur8hdhptnbjt8
Server : kamailio.(5.6.2.(x86_64/linux))
Content-Length: 0









--

Ing. Giovanni Iamonte
Developments and technologies area
Quintetto Srl
Via Monte Navale, 1
10015 - Ivrea (TO)
 mobile: +39 393 9196310
 tel: +39 0165 1845290
 e-mail: giovanni.iamonte@quintetto.it
 web: www.quintetto.it

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