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Re: [quicwg/base-drafts] MAY send 1 packet entering recovery (#3443)

Jana Iyengar <notifications@github.com> Tue, 11 February 2020 23:29 UTC

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Date: Tue, 11 Feb 2020 15:29:05 -0800
From: Jana Iyengar <notifications@github.com>
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Subject: Re: [quicwg/base-drafts] MAY send 1 packet entering recovery (#3443)
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janaiyengar approved this pull request.

Just a nit, but LGTM.

> @@ -687,6 +687,12 @@ The recovery period limits congestion window reduction to once per round trip.
 During recovery, the congestion window remains unchanged irrespective of new
 losses or increases in the ECN-CE counter.
 
+When entering recovery, a single packet MAY be sent even if bytes in flight
+now exceeds the recently reduced congestion window.  This speeds up loss
+recovery if the data in the lost packet is retransmitted and is similar to TCP
+as described in Section 5 of {{?RFC6675}}.  If further packets are lost after
+already in recovery, the congestion window MUST be observed as normal.

nit: "If further packets are lost while the sender is in recovery, sending any packets in response MUST obey the congestion window limit."

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