[OpenSIPS-Users] OpenSIPs generate PRACK

[Bogdan-Andrei Iancu]

yes, you can use the b2b_logic (together with b2b_entities) for that, 
but it may be a too heavy tool for the purpose. Maybe you can try to 
generate the PRACK from OpenSIPS level by using the t_uac_dlg MI 
function [1] via the mi_script module [2] - basically to trigger that MI 
cmd from the onreply_route, when receiving the 180 reply.

[1] https://opensips.org/html/docs/modules/3.4.x/tm.html#mi_t_uac_dlg
[2] https://opensips.org/html/docs/modules/3.4.x/mi_script.html#afunc_mi

Regards,

Bogdan-Andrei Iancu

OpenSIPS Founder and Developer
   https://www.opensips-solutions.com
   https://www.siphub.com

On 25.02.2024 14:54, Social Boh wrote:
>
> I know the best way is the original caller handle and reply the 183, 
> but I HAVE to do this at OpenSIPs level.
>
> Can I use B2B_Entities and B2B_logic to do this? Is there a scenario 
> to use tu parse and reply the 183?
>
> Thank you
>
> ---
> I'm SoCIaL, MayBe
> El 16/02/2024 a las 11:31 a. m., Bogdan-Andrei Iancu escribió:
>> I agree here, the 183 must be relayed back to the original caller 
>> (which generate the received INVITE) and let it do the PRACK - this 
>> confirmation must be end-2-end in the dialog.
>>
>> Regards,
>> Bogdan-Andrei Iancu
>>
>> OpenSIPS Founder and Developer
>>    https://www.opensips-solutions.com
>>    https://www.siphub.com
>> On 12.02.2024 11:36, Ihor Olkhovskyi wrote:
>>> You should relay 183 to original source (ione that is sending 
>>> INVITE) and got PRACK from there.
>>> That would be the most correct way of handling this
>>>
>>> Le lun. 12 févr. 2024 à 02:29, Social Boh <social at bohboh.info> a écrit :
>>>
>>>     Maybe someone can help me.
>>>
>>>     This is the scenario.
>>>
>>>     OpenSIPs receive a INVITE and send it to a server that reply
>>>     with a 302
>>>     message (always)
>>>
>>>     Then OpenSIPs, in the failure route, take the user part present
>>>     in the
>>>     302 contact header, change the destination IP and send with t_relay
>>>
>>>     The destination reply with a 183 with Require: 100rel header so
>>>     OpenSIPs
>>>     have to reply with a PRACK. This is my problem.
>>>
>>>     I don't know which is the best way to handle this (the PRACK)
>>>
>>>     Thank you
>>>
>>>     Regards
>>>
>>>     ---
>>>     I'm SoCIaL, MayBe
>>>
>>>     El 9/02/2024 a las 6:46 a. m., Social Boh escribió:
>>>     > Hello list,
>>>     >
>>>     > can OpenSIPs generate a PRACK message to reply a 180/183 message?
>>>     >
>>>     > Thank you
>>>     >
>>>     > Regards
>>>     >
>>>     > ---
>>>     > I'm SoCIaL, MayBe
>>>     >
>>>     >
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>>>
>>> -- 
>>> Best regards,
>>> Ihor (Igor)
>>>
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>>
>>
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