Iñaki Baz Castillo writes:
Therefore, an UAC compliant with RFC 6665 will ignore the Record-Route headers in the SUBSCRIBE 200 and will wait for the first NOTIFY to get the Record-Route headers and set them as the route set of the dialog. If such a NOTIFY does not contain RR then the UAC will fail to create the route set and the next re-SUBSCRIBE will miss them.
So in short: every proxy in the path of a subscription MUST add RR to in-dialog NOTIFY requests, and thus Kamailio default script file should perform record_route() for in-dialog NOTIFY requests.
inaki,
your summary is not correct. it is enough to add rr header to the FIRST notify after dialog creating subscribe.
would it be difficult for kamailio presence server to somehow (in a header) indicate that the notify is the first one?
-- juha