[xmpp] Stephen Farrell's No Objection on draft-ietf-xmpp-dna-10: (with COMMENT)

"Stephen Farrell" <stephen.farrell@cs.tcd.ie> Wed, 05 August 2015 15:02 UTC

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Subject: [xmpp] Stephen Farrell's No Objection on draft-ietf-xmpp-dna-10: (with COMMENT)
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Stephen Farrell has entered the following ballot position for
draft-ietf-xmpp-dna-10: No Objection

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The document, along with other ballot positions, can be found here:


- section 3: does nobody ever use mutually authenticated
TLS for this with XMPP? (Just wondering.)

- 3.2: I didn't know that XMPP clients send a user ID in
cleartext before turning on TLS. Pity that.  Is it ok
for a client to fake that and then later authenticate as
a different entity such as "usertwo@a.example"?

- 3.2, step 5: "proving" isn't quite right but is good
enough here.

- 4.1: Please separate the seperable pictures by at
least some whitespace but ideally with captions.  Right
now it looks initially as if it's just one big figure.
At present, I find that figure makes things less clear
rather than more.

- 4.2, bullets: the 2nd last one here is really similar
to the 1st two (as I read 'em). Maybe consider merging.
And the use of "is trusted by" in the 1st two is a bit
inaccurate, but could be lived with;-)

- 4.4.1: should the refs for dialback (and the "first
specified..." comment) be earlier?

- 5.1: Is there going to be another "XMPP with DANE
prooftype" document? I'm not sure that 5.1 alone is
enough, and there is one for POSH, so I wondered.

- 5.2: does this repeat text from the POSH I-D?  If so,
is that a good idea?

- 8.1: Huh? Why aren't these in the POSH I-d?

- 8.1/8.2: Is it a good/bad idea to have structure in
the .well-known URIs and where that structure is not a
pathname? Personally, I think it's not a great idea but
that's just a personal preference. I also don't think
"_tcp.json" is good to include in the URI.