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[quicwg/base-drafts] Rename "retransmittable" frames and packets (#1595)

ianswett <notifications@github.com> Mon, 23 July 2018 16:03 UTC

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Subject: [quicwg/base-drafts] Rename "retransmittable" frames and packets (#1595)
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The word retransmittable is used in the recovery draft for both frames and packets that cause an ACK frame to be sent in response to their receipt.

This is really misleading, because QUIC never retransmits packets(except maybe connection close) and only sometimes retransmits frames.

Ideally we'd have different words for the frames and the packets containing those frames, but at a minimum I want to stop using retransmittable.

Previous suggestions:
- Ackable - I didn't like this before, but it's strictly better than retransmittable.
- Reliable - Maybe a good term for packets, less good for frames?
- Needs Acknowledgement - Verbose, but correct.  Possibly abbreviated to Nack for maximum confusion :)
- Persistent

I'm want to change retransmittable to something else before the next drafts, so please suggest alternatives now and I'll write a PR for whatever people hate the least.

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