16 Apr
2012
16 Apr
'12
2:43 p.m.
2012/4/16 Juha Heinanen jh@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@aliax.net