Re: [openpgp] WKD lookup advanced → direct fallback clarification

Daniel Kahn Gillmor <dkg@fifthhorseman.net> Wed, 21 August 2019 13:00 UTC

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From: Daniel Kahn Gillmor <dkg@fifthhorseman.net>
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Subject: Re: [openpgp] WKD lookup advanced → direct fallback clarification
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On Tue 2019-08-20 17:00:23 -0400, Daniel Kahn Gillmor wrote:
> But it's not clear what "the required sub-domain does not exist" means
> exactly.

Here's why i care: if different WKD clients choose different answers to
this question, then some clients will get different responses for WKD
than others.  I think that would be a bad outcome.  You'd generally want
any WKD client on the public internet to get the same answer from a WKD
query.

For example, if client A accepts a 404 from the "advanced" URL as "does
not exist", but client B goes ahead with a query to the "direct" URL,
then client B could get a response that client A knows nothing about.

Which one is "right"?

     --dkg