Re: [quicwg/base-drafts] Move out-of-order packets definition (#3369)

ianswett <notifications@github.com> Wed, 11 March 2020 13:05 UTC

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Subject: Re: [quicwg/base-drafts] Move out-of-order packets definition (#3369)
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ianswett commented on this pull request.



> @@ -196,6 +196,12 @@ Ack-eliciting Packet:
   CONNECTION_CLOSE. These cause a recipient to send an acknowledgment (see
   {{sending-acknowledgements}}).
 
+Out-of-order packet:
+
+: A packet that does not increase the largest received packet number for its
+  packet number space by exactly one. A packet can arrive out of order
+  if it is delayed or if earlier packets are lost or delayed.
+

We're using it to elicit an ACK more quickly in the case of a single PTO packet, see #2952 

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