[SR-Users] Different REGISTER expires based on User-Agent

[mayamatakeshi]

On Sun, Feb 9, 2020 at 8:49 AM David Villasmil <
david.villasmil.work at gmail.com> wrote:

> I wonder whether changing the expire value constantly will impact all
> expires, as opposed to just the one you’re trying to set it to. If, say you
> lower it for a register, will that expire all existing registers?
>
>
Actually, my idea was to do something like this before handing the REGISTER
to registrar save() function:
                        remove_hf("Expires");
                        append_hf("Expires: 200\r\n");
However, this didn't work (or at least, it doesn't work with kamailio 4.3.7
which is the one I use).

But I found a solution for my problem:
Starting from kamailio 5.0, registrar function save() supports this new
flag:
*  0x08 - Do not apply expires_range or default_expires_range to this
registration.*

https://kamailio.org/docs/modules/5.0.x/modules/registrar.html#registrar.f.save
I actually don't need to specify an Expires value in the REGISTER reply. I
just need to allow a higher Expires value for some UACs (actually SIP
servers registering with Kamailio).
I have not tested it yet but based on the description, it should work.
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