7 May
2021
7 May
'21
11:08 p.m.
Yes. It passesuri == myself condition on auth.
Regards,
Igor
On 07.05.2021 17:32, David Villasmil wrote:
Have you tried verifying Kamailio actually believes
the FQDN is itself?
Regards,
David Villasmil
email: david.villasmil.work(a)gmail.com
<mailto:david.villasmil.work@gmail.com>
phone: +34669448337
On Fri, May 7, 2021 at 4:18 PM Igor Olhovskiy <igorolhovskiy(a)gmail.com
<mailto:igorolhovskiy@gmail.com>> wrote:
David,
Yes, I did added it, means it was there, but is_first_hop() was
blocking adding it. I think it's some leftovers from default config.
So, my conclusion, that is_first_hop() is ok with IP addresses,
but not ok with FQDN in route. Although FQDN is added as alias
Regards,
Igor
On 07.05.2021 16:07, David Villasmil wrote:
Did you add the handle_ruri_alias() as
suggested by Daniel? I had
something like this where I would get “unable to resolve blah
blah blah" and it’s because the RURI is the actual wss “address”
which is unresolvable, so executing the function forces kamailio
to take the alias instead.
On Fri, 7 May 2021 at 13:48, Igor Olhovskiy
<igorolhovskiy(a)gmail.com <mailto:igorolhovskiy@gmail.com>> wrote:
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.
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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:
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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
>>>>>> <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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Discussions
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>>>>> --
>>>>> Daniel-Constantin Mierla --www.asipto.com
<http://www.asipto.com>
>>>>> www.twitter.com/miconda
<http://www.twitter.com/miconda> --www.linkedin.com/in/miconda
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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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> --
> Daniel-Constantin Mierla --www.asipto.com <http://www.asipto.com>
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