Re: [quicwg/base-drafts] ACKs for receiver-only (#1232)

Nick Banks <notifications@github.com> Sun, 18 March 2018 23:00 UTC

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Date: Sun, 18 Mar 2018 23:00:09 +0000
From: Nick Banks <notifications@github.com>
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Subject: Re: [quicwg/base-drafts] ACKs for receiver-only (#1232)
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@ekr, I don't understand why you say this isn't true. The issue here is that if an endpoint sends nothing but ACKs, there is no guarantee its peer will acknowledge those packets. The peer may have other data to send back, and may choose to include ACK frames in those packets, if there is room, but if the peer has enough constant stream data to send back and (for some reason) prioritizes the STREAM frames higher than ACK frames, it might not end up acknowledging the endpoint's ACK frames in a timely manner.

All that being said, personally I think ACK frames should have the highest priority when framing a packet to send out. So if you ever have something to send out (other than the ACKs) then the ACKs should end up getting sent too. But all this seems like an implementation issue to me.

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