On Thu, Mar 22, 2018 at 5:03 PM peter van der Stok <stokc...@xs4all.nl> wrote:
> > > One doubt I have is how does the JRC send the Observe response to the > > joined node, when the request came over a Join Proxy. Essentially, the > > JRC needs to send the response to the global IPv6 address of the > > joined node, that it never used before, but it is able to construct > > it, as it knows the network prefix and the node identifiers (EUI-64, > > short address). @Christian, is there any problem of doing this in > > terms of CoAP? > > > Why not have the joined node, after joining, send a GET with observe to > the JRC to receive rekeys? > Hi Peter, Would there be any semantical difference to doing that in respect to doing it in the Join Request? If we can do it in 2 messages, why use 4? I see it more as the implementation problem, since JRC+CoAP implementation will need to override the IP address of the observing client. In terms of compliance with the security specs, I would say that it's OK, as we use OSCORE, not DTLS where there is a binding of the session with IP addresses. Mališa -- Mališa
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