Hello,

do you actually create a transaction before sending the 407, or using t_reply() 
to do it statefully?

Check also if you not deactivated it on the module level, e.g. 
https://www.kamailio.org/docs/modules/5.2.x/modules/auth.html#auth.p.force_stateless_reply

Cheers,

Henning

--
Henning Westerholt – https://skalatan.de/blog/
Kamailio services – https://gilawa.com<https://gilawa.com/>

From: sr-users <[email protected]> On Behalf Of Marat Gareev
Sent: Sunday, February 7, 2021 10:02 PM
To: Kamailio (SER) - Users Mailing List <[email protected]>
Subject: Re: [SR-Users] Retransmission of 407

Isn't this the reason for sending retransmits?

First of all I checked the successful case (attached screenshot).
Then I replaced sending ACK with <timewait milliseconds="4000"/> so that the 
UAS has time to send retransmits before the connection drops. In this part of 
scenario:
<recv response="100" optional="true"/>
<recv response="180" optional="true"/>
<recv response="183" optional="true"/>
<recv response="200" rrs="true" optional="true" next="200ok"/>
<recv response="407" auth="true"/>
<send>
<![CDATA[
ACK sip:[service]@[remote_ip]:[remote_port] SIP/2.0
[last_Via:]
[last_From:]
[last_To:]
[last_Call-ID:]
[last_CSeq]
Max-Forwards: 70
Content-Length: [len]
]]>
</send>
And I expect the Kamailio to send a retransmit, but it doesn't.

вс, 7 февр. 2021 г. в 19:31, Alex Balashov 
<[email protected]<mailto:[email protected]>>:
That sounds like the client does not receive the 407.

—
Sent from mobile, with due apologies for brevity and errors.

> On Feb 7, 2021, at 11:12 AM, Marat Gareev 
> <[email protected]<mailto:[email protected]>> wrote:
>
> 
> Hello,
>
> UAC sends INVITE to UAS, authorization procedure is required, therefore UAS 
> responds with an 407 error code. At this point, the client does not respond 
> with ACK, but the server does not send retransmits.
> Is this the expected behavior?
> * UAC -- SIPp, UAS -- Kamailio.
>
> Can the Kamailio be configured to send 407 code retransmissions?
>
> Thanks!
> _______________________________________________
> Kamailio (SER) - Users Mailing List
> [email protected]<mailto:[email protected]>
> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users

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