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Re: [quicwg/base-drafts] Is it OK to send a server cleartext packet after the client has sent a finished message? (#829)

Kazuho Oku <notifications@github.com> Thu, 05 October 2017 20:27 UTC

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Subject: Re: [quicwg/base-drafts] Is it OK to send a server cleartext packet after the client has sent a finished message? (#829)
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@huitema 
> I am concerned that this creates a big special case. If I have to accept a clear text ACK for the Finished message, I need to keep track of the packet numbers that can be ACKed with that message -- ACKing 1RTT data would be wrong. That's a very big wart in the code.

We cannot use the timing at which we finish TLS handshake as a moment to switch from ACK over cleartext to ACK over protected packets, considering the fact that 0-RTT packets need to be ACKed using protected packets, and that 0-RTT packets and cleartext packets can be sent in mixed order.

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