[SR-Users] Critical Error

[Daniel-Constantin Mierla]

Hello,

thanks for writing to conclude this discussion thread, for the archive
it is good to have the message pointing to the solution or if the issue
was elsewhere.

Cheers,
Daniel


On 02.01.18 18:10, Nicolas Breuer wrote:
> Hello the list,
>
> Just to inform you that the issue was solved.
>
> The error in Kamailio was caused by a wrong signaling from our upstream.
>
>
>
> -----Message d'origine-----
> De : sr-users [mailto:sr-users-bounces at lists.kamailio.org] De la part de Nicolas Breuer
> Envoyé : samedi 30 décembre 2017 17:32
> À : sr-users at lists.kamailio.org
> Objet : Re: [SR-Users] Critical Error
>
> Hi,
>
> Can I help to find the cause ?
>
>
>> Le 28 déc. 2017 à 18:32, Daniel Tryba <d.tryba at pocos.nl> a écrit :
>>
>>> On Thu, Dec 28, 2017 at 04:21:28PM +0000, Nicolas Breuer wrote:
>>>
>>> I see this :
>>>
>>>
>>> SIP/2.0 183 Session Progress.
>>> CSeq: 1258951486 INVITE.
>>> Require: 100rel.
>>>
>>> SIP/2.0 180 Ringing.
>>> CSeq: 1258951486 INVITE.
>>> Require: 100rel.
>>>
>>> PRACK sip:3222430244 at 80.84.31.129:5060 SIP/2.0.
>>> CSeq: 1258951487 PRACK.
>>> Indeed after the PRACK there is no ? 18x ? packets.
>> You misinterpreted:
>>> I looked at the code and this log happens when a PRACK is received, 
>>> but there was no 183 (or other 1xx) response. Can you check the sip 
>>> traffic and see what packets are sent around?
>> A PRACK is a PRovisional ACKnowlegde to messages that don't need any 
>> responses in plain old SIP. So the PRACK is a correct new message in 
>> response to the 18X received (with req rel100).
>>
>> I'm not seeing these errors in dialog on 4.4.6 setups where upstream 
>> demands PRACK.
>>
>>
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-- 
Daniel-Constantin Mierla
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