>>>>> "Ray" == Ray Hunter <v6...@globis.net> writes:
>>> What if both the server AND the client have multiple interfaces: how do
>>> they both know which local interface on their own node is mutually
>>> connected and to be used for communication? There's only one single
>>> zoneid in the URI, so presumably one of the nodes is lacking some
>>> information.
>> The server knows its own link-local addresses and doesn't need
>> the zoneid information.
Ray> I don't understand this logic. I'm presuming the outbound interface for
Ray> replies is being selected by mirroring the inbound addresses of the
Ray> request [quoting RFC6724: "In many cases, this is trivially
Ray> dealt with
yeah, that's just TCP.
Ray> However I thought one of the use cases was the printer sending
Ray> unsolicited information such as "out of paper".
I don't know how this works in an unsolicited way.
I thought that with the ways we have tried to standardize (IPP, XMPP,
SIP, forgive me... I don't know which won) the client pretty much always
has to subscribe, or it's a broadcast/multicast.
>> For the use case under discussion, the client only knows its
>> zoneid information because the user/administrator has supplied it
>> along with the printer's link-local address.
Ray> Right. That was going to be my next question.
Ray> How does the very first URI learn the correct ZoneID in the first
place?
Ray> Manually.
In a Bonjour/mDNS scenario, the client sees the link-local address on interface
with zoneID FOO, and records that. The client learns it's correct ZoneID.
(At no point does it matter what the server's zoneid for the interface
is)
--
] Never tell me the odds! | ipv6 mesh networks [
] Michael Richardson, Sandelman Software Works | network architect [
] m...@sandelman.ca http://www.sandelman.ca/ | ruby on rails [
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