Hello Michael > -----Original Message----- > From: 6tisch <[email protected]> On Behalf Of Michael Richardson > Sent: vendredi 18 mai 2018 17:10 > To: Pascal Thubert (pthubert) <[email protected]> > Cc: [email protected] > Subject: Re: [6tisch] On minimal-security > > > Pascal Thubert (pthubert) <[email protected]> wrote: > >>> Suggestion: "default-jrc.6tisch.arpa". > >> > >> Why make it longer? Note that it's already to a unique Path-URI (/j), > so > we > >> can add new things if it's CoAP. > > > The point is that 6TiSCH.arpa doesn’t dénote what 6TISCH service we are > > after. There may be others in the future like a PCE. > > I don't understand at all. Would a PCE provide enrollment services? [PT>] We are talking to a stateless CoAP proxy, giving an alias to a service that it will map into the IP address of the server, here the JRC. I understood that this is an anycast name for the JRC, aimed to be resolved by the proxy in a pseudo DNS fashion into the IP address of the server. Do I have that wrong? If the proxy is used for only one service, arguable there is no need to pass a string at all. If it is generic enough and used for more than one service than we need something meaningful. I'm not sure which we really want but 6tisch.arpa fails either way.
> > 1) We specify the service we want with the Path-URI (/j for join). > We could have /p for a PCE, but, I'm not sure what it would do. [PT>] The path URI is on the server, but the proxy needs to find that server. At least that's the way usual http proxies work. > > 2) There is never an IP address associated with 6tisch.arpa, it's just > something to put into the Host part of the CoAP. Since we are talking > to a Join Proxy, and the Join Proxy points to the JRC, we get the JRC. [PT>] OK then you seem to be looking at a dedicated proxy; if so, why a string at all? > > If we had something that wanted a PCE, what would it talk to get that? > Wouldn't the node already have enrolled? > How would it get the IP address of the PCE? [PT>] The string could be a real DNS name. The question is whether the instance of the proxy is dedicated to join or not... Cheers, Pascal > > -- > ] Never tell me the odds! | ipv6 mesh networks [ > ] Michael Richardson, Sandelman Software Works | network architect [ > ] [email protected] http://www.sandelman.ca/ | ruby on rails > [ > _______________________________________________ 6tisch mailing list [email protected] https://www.ietf.org/mailman/listinfo/6tisch
