[SR-Users] Question about sip call setup : three-way handshake

[Giovanni Maruzzelli]

just a thought: OPTIONS, send it asynchronously, not part of INVITE
processing, and wait for answer before sending 200 OK...



On 21 June 2017 at 18:53, Abdoul Osséni <abdoul.osseni at gmail.com> wrote:

> Linphone client seems to not support PRACK method. Any other solution ?
>
> Regards
> Abdoul.
>
> 2017-06-21 18:47 GMT+02:00 Giovanni Maruzzelli <gmaruzz at gmail.com>:
>
>>
>>
>> On 21 June 2017 at 18:42, Abdoul Osséni <abdoul.osseni at gmail.com> wrote:
>>
>>> Yes, I think PRACK method can help me.
>>>
>>
>> Check your UACs support PRACK... Not all clients do it well...
>>
>> -giovanni
>>
>>
>>
>>>
>>> Thanks.
>>>
>>> Regards
>>> Abdoul.
>>>
>>> 2017-06-21 14:20 GMT+02:00 Mititelu Stefan <stefan.mititelu92 at gmail.com>
>>> :
>>>
>>>> Maybe PRACK, RFC 3262, is what you are looking for?
>>>>
>>>> ---
>>>> Stefan
>>>>
>>>> On Jun 21, 2017 2:46 PM, "Abdoul Osséni" <abdoul.osseni at gmail.com>
>>>> wrote:
>>>>
>>>> Hello,
>>>>
>>>> During three-way handshake (SIP call setup - INVITE-200 OK - ACK) and
>>>> before generating or sending the final 200 OK call, is there a way to
>>>> confirm the caller is still available (no network issue)?
>>>>
>>>> I want to detect broken connections (ex. the uac uses 3G network)
>>>> before generating/sending/forwarding the final 200 OK.
>>>>
>>>> Thanks.
>>>>
>>>> Regards
>>>> Abdoul
>>>>
>>>> _______________________________________________
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>>>>
>>>>
>>>>
>>>> _______________________________________________
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>>>>
>>>>
>>>
>>>
>>> --
>>> Abdoul OSSENI
>>> Ingénieur Réseaux et systèmes chez THALES
>>> Co-Fondateur de ON SERVICES
>>> Tél : +33 601 135 167
>>>
>>> _______________________________________________
>>> Kamailio (SER) - Users Mailing List
>>> sr-users at lists.kamailio.org
>>> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
>>>
>>>
>>
>>
>> --
>>
>> Sincerely,
>>
>> Giovanni Maruzzelli
>> OpenTelecom.IT
>> cell: +39 347 266 56 18
>>
>> _______________________________________________
>> Kamailio (SER) - Users Mailing List
>> sr-users at lists.kamailio.org
>> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
>>
>>
>
>
> --
> Abdoul OSSENI
> Ingénieur Réseaux et systèmes chez THALES
> Co-Fondateur de ON SERVICES
> Tél : +33 601 135 167
>



-- 

Sincerely,

Giovanni Maruzzelli
OpenTelecom.IT
cell: +39 347 266 56 18
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