I don't expect there to be very many standards based protocols in the
future that are not Web Services.
I've seen lots of fads come and go, and so far I've seen nothing to
convince me that Web Services is not yet another fad. Time will tell.
Angle brackets are now as inescapable as ASCII was twenty years ago.
Only for people who can't actually evaluate the consequences of protocol
design decisions at the presentation layer.
Admittedly, some things do get chosen by evolution. We have
power-of-two word sizes now, and all hardware these days has to deal
reasonably efficiently with eight-bit bytes. That's because these were
found to work well over several decades of experience. But there are
lots of reasons to avoid representing all data in a format that requires
all of that data to be examined looking for delimiters, sometimes
multiple times, by every machine that touches it.
The point is that if you use a DNS Domain Name as the index you want
to use the DNS as part of the distribution mechanism.
The point is that the distributed information store that we currently
know as DNS is separable from the protocol that we call DNS, and we can
(if we are careful) design a new protocol that will let us access that
information store more flexibly while still keeping the views consistent
between the DNS protocol and the new protocol.
Storing pointers to policy in the DNS means that the DNS remains the
one authoritative source for DNS information.
This seems to presume that DKIM signing policy is DNS information. It's
not, at least not inherently so.
Keith
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