[sr-dev] indicating gruu support

[Iñaki Baz Castillo]

2012/4/16 Juha Heinanen <jh at tutpro.com>:
>> Note that +sip.instance is also used in SIP outbound.
>
> yes, i know, but in order to use it for gruu, supported gruu MUST be
> included:
>
>   When a UA compliant to this specification generates a REGISTER
>   request (initial or refresh), it MUST include the Supported header
>   field in the request.  The value of that header field MUST include
>   "gruu" as one of the option tags.  This alerts the registrar for the
>   domain that the UA supports the GRUU mechanism.

I agree. GRUU usage must be only performed if the client announces
support for it. As Olle pointed, the existence of +sip.instance
Contact header parameter does not mean "GRUU", it could just indicate
Outbound support.

Regards.

-- 
Iñaki Baz Castillo
<ibc at aliax.net>