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Re: [quicwg/base-drafts] Desirable behavior when it takes time to derive the traffic keys for the next PN space (#3821)

Jana Iyengar <notifications@github.com> Wed, 29 July 2020 02:34 UTC

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Date: Tue, 28 Jul 2020 19:34:54 -0700
From: Jana Iyengar <notifications@github.com>
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Subject: Re: [quicwg/base-drafts] Desirable behavior when it takes time to derive the traffic keys for the next PN space (#3821)
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@martinthomson noted:
```
> - endpoints ignore max_ack_delay for acknowledgements of packets that
> were sent prior to handshake confirmation. Those are the ones that
> might have been buffered at the peer until keys were ready.

For this, endpoints need to retain an additional value: the highest packet number
that was sent prior to confirmation (or the lowest packet number sent after confirmation).
```

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