[OpenSIPS-Users] ACK increased Cseq on reinvite

Bogdan-Andrei Iancu bogdan at opensips.org
Mon Nov 12 11:42:24 EST 2018


Thanks Schneur,

Indeed, I see that during the re-INVITe, the cseq of the ACK bumps to 
105 instead of 104 (from 103 on caller leg).

Please open a bug report on the github tracker, to have this issue in 
our attention.

Regards,

Bogdan-Andrei Iancu

OpenSIPS Founder and Developer
   http://www.opensips-solutions.com
OpenSIPS Bootcamp 2018
   http://opensips.org/training/OpenSIPS_Bootcamp_2018/

On 11/07/2018 12:01 PM, Schneur Rosenberg wrote:
> Attached please find the trace, Im sending you the trace in private
> for security and privacy reasons, thank you
>
>
> On Wed, Nov 7, 2018 at 11:59 AM Schneur Rosenberg
> <rosenberg11219 at gmail.com> wrote:
>> For security reasons I will email it directly to you.
>>
>> thanks
>> On Tue, Nov 6, 2018 at 11:21 PM Bogdan-Andrei Iancu <bogdan at opensips.org> wrote:
>>> Hi Schneur,
>>>
>>> Could you please post a link to a pcap showing this exact problem - the
>>> trace should be from the opensips machine, covering the traffic from
>>> caller and callee side too for the whole duration of the call.
>>>
>>> Regards,
>>>
>>> Bogdan-Andrei Iancu
>>>
>>> OpenSIPS Founder and Developer
>>>     http://www.opensips-solutions.com
>>> OpenSIPS Bootcamp 2018
>>>     http://opensips.org/training/OpenSIPS_Bootcamp_2018/
>>>
>>> On 11/06/2018 02:41 PM, Schneur Rosenberg wrote:
>>>> Hi, I have this scenario, I'm sending to a carrier that requires
>>>> authentication and I use uac_auth(), when I send a call to the carrier
>>>> everything works fine, but when OpenSIPs sends a reinvite the carrier
>>>> responds witha 200 OK, OpenSIPs  replies with a ACK but it falsely
>>>> increments the CSeq , causing the carrier to ignore it, and then the
>>>> carrier will keep on resending 200 OK's and OpenSIPs still returns the
>>>> wrong ACK and eventually the carrier hangs up.
>>>>
>>>> I'm running OpenSIPs 2.4.1
>>>>
>>>> thanks
>>>> Scot
>>>>
>>>> _______________________________________________
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>>>> Users at lists.opensips.org
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