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Re: [quicwg/base-drafts] A more complete connection migration (#1012)

Christian Huitema <notifications@github.com> Tue, 26 December 2017 00:12 UTC

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Date: Tue, 26 Dec 2017 00:12:16 +0000
From: Christian Huitema <notifications@github.com>
Reply-To: quicwg/base-drafts <reply+0166e4abeec4d3434c2fab4d83bb83f72cbfe77fbae4487692cf00000001165955e092a169ce10c89c07@reply.github.com>
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Subject: Re: [quicwg/base-drafts] A more complete connection migration (#1012)
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I have mixed feelings about this. First, I am not sure that this belongs to the frame layer. The path challenge is in many ways similar to a client initial packet. It requires the same kind of padding, for the same reason. And it carries similar content restrictions such as "no other frame allowed". A new packet type might be more appropriate than a frame type.

Second, this probably requires a three ways handshake, not just a question response. And it would be better served with a symmetric structure -- 
Maybe "your nonce, my nonce", so as to allow symmetry.

Then, there maybe a need for more attributes than nonces, especially if we want to handle NAT rebinding. Like, echoing the address from where this was sent.

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