[SR-Users] Critical Error

[Nicolas Breuer]

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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