Re: [quicwg/base-drafts] ACK of ACK are useful (#2546)

Igor Lubashev <notifications@github.com> Wed, 22 May 2019 10:57 UTC

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Subject: Re: [quicwg/base-drafts] ACK of ACK are useful (#2546)
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An alternative to relying on having to send ACK+PING would be requiring sending ACKs-of-ACKs, if you are sending non-(ACK|PADDING) frames (though not necessarily in the same packets as non-(ACK|PADDING) frames).

So, maybe: "_An endpoint MUST NOT send a packet containing only ACK or PADDING frames in response to a packet containing only ACK or PADDING frames, if the previous packet it sent contained only ACK or PADDING frames._"

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