[OpenSIPS-Users] [Blog] How to Eliminate Zombie Registrations in OpenSIPS

[Federico Edorna]

Thanks Bogan, very useful information. Regarding the E_CORE_TCP_DISCONNECT
event, I wonder if it is possible to avoid removing the contact for Push
Notification user agents. Because the TCP connection may go down, but we
must keep the contact in usrloc. Do you think it is possible to detect this
special case in some way?
Best regards

On Thu, Oct 3, 2024 at 11:49 AM Bogdan-Andrei Iancu <bogdan at opensips.org>
wrote:

> Sure, it will do it!
>
> Regards,
>
> Bogdan-Andrei Iancu
>
> OpenSIPS Founder and Developer
>   https://www.opensips-solutions.com
>   https://www.siphub.com
>
> On 03.10.2024 17:26, M S wrote:
>
> What if I add a header (in local_route) to locally generated unregister
> messages from midregistrar opensips to tell the main registrar that it is a
> special message, and in the main registrar just call save("location") for
> these messages without any www_authorize?
>
> On Thu, Oct 3, 2024 at 4:00 PM Bogdan-Andrei Iancu <bogdan at opensips.org>
> wrote:
>
>> Well, good question. The mechanism will perfectly work between the
>> mid_registrar and the end-devices. But if the mid_registrar detects and
>> remove a zombie contact, it may have to preform a de-registration
>> (depending on the mid registrar mode) with the main registrar. That means
>> an REGISTER generated by mid-registrar OpenSIPS - and if you do digest auth
>> on the main registrar, this will fail :(
>>
>> Regards,
>>
>> Bogdan-Andrei Iancu
>>
>> OpenSIPS Founder and Developer
>>   https://www.opensips-solutions.com
>>   https://www.siphub.com
>>
>> On 03.10.2024 16:20, M S wrote:
>>
>> Hi Bogdan,
>> Thank you for your post and explanation, does this work the same with
>> mid_registrar too, i.e. if a contact is marked with RTO is it discarded
>> from mid_registrar location if it is zombie?
>>
>> Thank you!
>>
>> On Thu, Oct 3, 2024 at 1:04 PM Bogdan-Andrei Iancu <bogdan at opensips.org>
>> wrote:
>>
>>>
>>> Here is a short post on how to improve your OpenSIPS registrar
>>> performance and also your user's experience in the same time.... by
>>> fighting the zombies.... the zombie registrations 🙂
>>>
>>>
>>> https://blog.opensips.org/2024/10/03/how-to-eliminate-zombie-registrations-in-opensips/
>>>
>>> Enjoy,
>>>
>>> --
>>> Bogdan-Andrei Iancu
>>>
>>> OpenSIPS Founder and Developer
>>>    https://www.opensips-solutions.com
>>>    https://www.siphub.com
>>>
>>>
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>>> Users mailing list
>>> Users at lists.opensips.org
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>>>
>>
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>>
>>
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