Re: [quicwg/base-drafts] Out-of-order may be intentional (#3511)

Marten Seemann <> Wed, 11 March 2020 14:25 UTC

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Date: Wed, 11 Mar 2020 07:25:00 -0700
From: Marten Seemann <>
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Subject: Re: [quicwg/base-drafts] Out-of-order may be intentional (#3511)
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marten-seemann commented on this pull request.

> @@ -200,7 +200,8 @@ Out-of-order packet:
 : A packet that does not increase the largest received packet number for its
   packet number space ({{packet-numbers}}) by exactly one. A packet can arrive
-  out of order if it is delayed or if earlier packets are lost or delayed.
+  out of order if it is delayed, if earlier packets are lost or delayed, or if
+  the sender intentionally skips a packet number.

Reading through the whole definition now, I'm wondering why an out-of-order packet is one that doesn't increase the largest received packet number. If a packet jumps ahead of the queue, I would have considered it out-of-order, but it's not according to this definition.

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