2 Aug
2012
2 Aug
'12
10:23 a.m.
2012/7/31 José Luis Millán <jmillan(a)aliax.net>et>:
Outbound provides the UAC a way to update a binding
even if it reboots. For
that, a unique and permanent value of instance-id is used, which in
conjunction with the AoR and reg-id determines the binding to the UAC.
Having said this, I guess that the CSeq comparison between the one in the
Register request and the one in the binding does not apply in this scenario
since it is not guaranteed that a UAC saves the CSeq value of the
registration among reboots.
This is correct. According to RFC 5626, when the REGISTER includes a
Contact with +sip.instance and reg-id params the registrar MUST NOT
check the call-id and cseq of the request, but just the +sip.instance
and reg-id params (and the registering AoR in the To header of
course).
--
Iñaki Baz Castillo
<ibc(a)aliax.net>