[OpenSER-Users] registration & binding update

[Bogdan-Andrei Iancu]

Hi Aymeric,

What it happens is correct and fully complaint to RFC 3261.

A client may register several contacts for the same users, and each 
distinct contact forms a separate location registration.

Registering a new contact has no effect on the already existing 
(registered) contacts - it is like 2 phones registered for the same account.

If you want to replace a contact, the device needs to specifically 
un-register the previous contact.

Regards,
Bogdan


Aymeric Moizard wrote:
> Hi all,
>
> I'm using openser13 and met an issue when saving contact into
> my sql database upon registration refresh.
>
> After doing several registrations, sometimes my NAT loose the
> connection and change the port number (rport) that was used in previous
> signalling exchange.
>
> old REGISTER:
>   contact: with port 6010
> answer:
>   contact: with port 6010
> new REGISTER refresh:
>   contact: with port 1223
> answer
>   contact: with port 6010 (old one) + contact with port 1223 (new one)
>
> In the above case, this result in a new contact added in the database
> while I'm expecting the server to replace the previous address with the
> new one.
>
> I know that the rfc is not specifying such behavior: the expected 
> processing in the specification is the one done by ser, but by
> experience, if a contact was changed within a refresh, it's because
> of a NAT reboot/issue or because of roaming.
>
> That said, I wish to:
> 1: remove the old binding with call-id of the new REGISTER refresh
> 2: add my new binding.
>
> I've written a proxy before and that was my default behavior ;)
> I'm not even finding a use case where this could break any compliant app.
>
> Any way to do this?
> tks,
> Aymeric MOIZARD / ANTISIP
> amsip - http://www.antisip.com
> osip2 - http://www.osip.org
> eXosip2 - http://savannah.nongnu.org/projects/exosip/
>
>
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