Daniel,
Seems to be it's really the case, but with other function
With FQDN in RR
|is_first_hop()|
is not acting correctly for reply.
For incoming SIP replies, it means that top Record-Route URI is
'myself' and source address is not matching it
But in Record-Route we have "myself", but *is_first_hop()* returning 0.
Thanks!
Regards,
Igor
On 07.05.2021 14:22, Daniel-Constantin Mierla wrote:
OK, because looping was something that should not have happened in
this case.
Then the problem is that you do not do nat-traversal-like processing
for websocket/webrtc traffic. You have to use set_contact_alias() +
handle_ruri_alias() because the webrtc endpoints do not set "valid"
contact addresses.
Cheers,
Daniel
On 07.05.21 14:13, Igor Olhovskiy wrote:
Ah, no, sorry, I was wrong at this one,
This just is not sent with "unable to resolve address
toleivu2gdbh.invalid".
Sorry. Looping were something else during my tests, this just with
*advertise* added
Regards,
Igor
On 07.05.2021 14:02, Daniel-Constantin Mierla wrote:
This looks like incoming ACK, because there is only one Via header,
so it is not what proxy forwards -- that one is relevant to see what
headers were consumed and added.
Cheers,
Daniel
On 07.05.21 13:51, Igor Olhovskiy wrote:
Sure.
ACK sip:88290@toleivu2gdbh.invalid;transport=wss SIP/2.0
Via: SIP/2.0/UDP
A_IP_ADDRESS:5060;rport;branch=z9hG4bKPj8d05548a-91ef-4332-8617-32f8eeebf8f2
From: <sip:88881@A_IP_ADDRESS>;tag=0a3e31a6-96ad-42d0-9310-81b35cedbd3d
To: <sip:88290@KAMAILIO_FQDN>;tag=hvra7mj3q0
Call-ID: 46f44741-d155-4dd5-8fd8-78e540fc1acb
CSeq: 18326 ACK
Route:
<sip:KAMAILIO_FQDN;lr;r2=on;ftag=0a3e31a6-96ad-42d0-9310-81b35cedbd3d;nat=wss>
Route:
<sip:KAMAILIO_FQDN:8089;transport=ws;lr;r2=on;ftag=0a3e31a6-96ad-42d0-9310-81b35cedbd3d;nat=wss>
Max-Forwards: 70
User-Agent: Asterisk PBX 13.33.0
Content-Length: 0
By loop I meant, Kamailio just relaying it back to self and discard.
Regards,
Igor
On 07.05.2021 13:48, Daniel-Constantin Mierla wrote:
Can you paste the ACK that loops, after being handled once by
Kamailio?
Cheers,
Daniel
On 07.05.21 13:25, Igor Olhovskiy wrote:
Daniel,
Yes, it is.
alias=...
Also tried with
listen = IP advertise FQDN
same behavior, loose_route() stops acting correctly.
PS: Forgot to add, Kamailio 5.4.3 / 5.4.4
Regards,
Igor
On 07.05.2021 13:21, Daniel-Constantin Mierla wrote:
Hello,
is the KAMAILIO_FQDN set as local domain for Kamailio (via alias
parameter or domain module+register myself)?
Cheers,
Daniel
On 07.05.21 11:17, Igor Olhovskiy wrote:
Hello,
I saw there are some topics on this already and carefully
walked through all of them, but can't solve following issue.
For a reason I do need that in Record-Route header sent to
endpoint would present FQDN. If it matters, it's UDP/WSS
conversion done on Kamailio.
So, scheme is quite simple
Enpoint A ->UDP-> Kamailio ->WSS-> Endpoint B (NAT)
Main issue here, that if in Record-Route headers it's FQDN, but
not IP addresses, on a new transactions with a dialog (ACK on
200, PRACK, BYE), Kamailio*loose_route()* function resolves
address of destination not current dialog, but actual R-URI (or
itself, if R-URI is something from WebRTC world) that is not
correct due to NAT.
If in RR headers IP addresses are present - all is working as
expected.
As an example (RR with FQDN)
B answers 200
SIP/2.0 200 OK
Record-Route:
<sip:KAMAILIO_FQDN:8089;transport=ws;r2=on;lr=on;ftag=0a3e31a6-96ad-42d0-9310-81b35cedbd3d;nat=wss>
Record-Route:
<sip:KAMAILIO_FQDN;r2=on;lr=on;ftag=0a3e31a6-96ad-42d0-9310-81b35cedbd3d;nat=wss>
Via: SIP/2.0/UDP <A_IP_ADDRESS>:5060;received=A IP
ADDRESS;rport=5060;branch=z9hG4bKPj67fb6d86-97d7-4231-995b-e54b0f62881e
To: <sip:88290@<KAMAILIO_FQDN>>;tag=hvra7mj3q0
From:
<sip:+XXXX7688881@<KAMAILIO_FQDN>>;tag=0a3e31a6-96ad-42d0-9310-81b35cedbd3d
Call-ID: 46f44741-d155-4dd5-8fd8-78e540fc1acb
CSeq: 18326 INVITE
Contact: <sip:88290@toleivu2gdbh.invalid;transport=wss>
Allow: ACK,CANCEL,INVITE,MESSAGE,BYE,OPTIONS,INFO,NOTIFY,REFER
Supported: outbound
Content-Type: application/sdp
Content-Length: 817
ACK looks like
ACK sip:88290@toleivu2gdbh.invalid;transport=wss SIP/2.0
Via: SIP/2.0/UDP
A_IP_ADDRESS:5060;rport;branch=z9hG4bKPj8d05548a-91ef-4332-8617-32f8eeebf8f2
From:
<sip:88881@A_IP_ADDRESS>;tag=0a3e31a6-96ad-42d0-9310-81b35cedbd3d
To: <sip:88290@KAMAILIO_FQDN>;tag=hvra7mj3q0
Call-ID: 46f44741-d155-4dd5-8fd8-78e540fc1acb
CSeq: 18326 ACK
Route:
<sip:FQDN;lr;r2=on;ftag=0a3e31a6-96ad-42d0-9310-81b35cedbd3d;nat=wss>
Route:
<sip:FQDN:8089;transport=ws;lr;r2=on;ftag=0a3e31a6-96ad-42d0-9310-81b35cedbd3d;nat=wss>
Max-Forwards: 70
User-Agent: Asterisk PBX 13.33.0
Content-Length: 0
And Kamailio on *loose_route()* loops ACK to itself. (with
result of function == 1)
In a case if in Record-Route/Route headers just IP address of
Kamailio present, all works as expected, but it's not really
behavior I want to achieve.
I've tried to play with *record_route_preset("...")* specifying
only WSS part (as suggested in
https://skalatan.de/de/blog/kamailio-sbc-teams) with FQDN, but
no luck.
Also wanted to try approach using record_route_preset()
function in branch route, but it was working only with first
branch, not affecting others (but I assume having different RR
headers across branches is not a good idea)
--
Regards,
Igor
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Kamailio Advanced Training - Online
May 17-20, 2021 (Europe Timezone) - June 7-10, 2021 (America Timezone)
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--
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www.twitter.com/miconda --www.linkedin.com/in/miconda
Kamailio Advanced Training - Online
May 17-20, 2021 (Europe Timezone) - June 7-10, 2021 (America Timezone)
*https://www.asipto.com/sw/kamailio-advanced-training-online/
--
Daniel-Constantin Mierla --www.asipto.com
www.twitter.com/miconda --www.linkedin.com/in/miconda
Kamailio Advanced Training - Online
May 17-20, 2021 (Europe Timezone) - June 7-10, 2021 (America Timezone)
*https://www.asipto.com/sw/kamailio-advanced-training-online/
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Important: keep the mailing list in the recipients, do not reply only to the
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