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

[Abdoul Osséni]

Hello,

In fact, my goal is to avoid this type of issue (please see below the call
flow): I want kamailio sends a CANCEL request to asterisk if the uac lost
tcp connection during three-way - I cannot use PRACK method.

The ideal would be that Kamailio sends a CANCEL request before asterisk
generates the 200OK.

Any help will be appreciate.


[image: Images intégrées 1]

Regards

Abdoul

2017-06-21 18:56 GMT+02:00 Giovanni Maruzzelli <gmaruzz at gmail.com>:

> 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
>>>>>
>>>>> _______________________________________________
>>>>> Kamailio (SER) - Users Mailing List
>>>>> sr-users at lists.kamailio.org
>>>>> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
>>>>>
>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> 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
>>>>
>>>> _______________________________________________
>>>> 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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