[OpenSIPS-Devel] Registrations, contact and rfc question

[Saúl Ibarra Corretgé]

Hi,

On Oct 18, 2012, at 11:26 AM, Nick Altmann wrote:

> Hello!
> 
> Opensips 1.8
> 
> When one client registered two times in 200 OK after REGISTER I see this contact:
> Contact: <sip:abonent1 at 192.168.1.63:5062>;q=0;expires=1484;received="sip:8.8.8.8:5060", <sip:abonent1 at 192.168.1.10:57393;ob>;q=0;expires=300;received="sip:8.8.8.8:5060" 
> 
> RFC 3261, 8.1.1.8:
> 
> The Contact header field provides a SIP or SIPS URI that can be used
>    to contact that specific instance of the UA for subsequent requests.
>    The Contact header field MUST be present and contain exactly one SIP
>    or SIPS URI in any request that can result in the establishment of a
>    dialog.  For the methods defined in this specification, that includes
>    only the INVITE request.  For these requests, the scope of the
>    Contact is global.  That is, the Contact header field value contains
>    the URI at which the UA would like to receive requests, and this URI
>    MUST be valid even if used in subsequent requests outside of any
>    dialogs.
> 
> Is it correct to receive two URIs in contact in my case?
> I use path to get receiver address because I use balancer before registrar.
> The command is save("location", "p0").
> 

That is correct. Those are not 2 contact URIs, they are 2 contact headers in a single line, comma separated.


Regards,

--
Saúl Ibarra Corretgé
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