Re: [quicwg/base-drafts] Merge crypto timeout into PTO (#2655)

Jana Iyengar <> Sun, 28 April 2019 07:07 UTC

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Subject: Re: [quicwg/base-drafts] Merge crypto timeout into PTO (#2655)
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janaiyengar commented on this pull request.

> +the count of bytes in flight.
+Endpoints stop sending and receiving Initial packets once they start exchanging
+Handshake packets (see Section of {{QUIC-TRANSPORT}}). At this point,
+recovery state for all in-flight Initial packets is discarded.
+When 0-RTT is rejected, recovery state for all in-flight 0-RTT packets is
+If a server accepts 0-RTT, but does not buffer 0-RTT packets that arrive
+before Initial packets, early 0-RTT packets will be declared lost, but that
+is expected to be infrequent.
+It is expected that keys are discarded after packets encrypted with them would
+be acknowledged or declared lost.  Initial secrets however might be destroyed
+sooner, as soon as handshake keys are available (see Section 4.10 of

This is pre-existing text, not new to this PR. The point however here isn't that you discard keys based on declaring packets lost, but that it is generally expected to be the case that packets are already declared lost (or acked) by the time keys are discarded.

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