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Re: [quicwg/base-drafts] Discuss Application-Limited Sending (#1637)

ianswett <notifications@github.com> Tue, 29 January 2019 02:13 UTC

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Date: Tue, 29 Jan 2019 02:13:18 +0000
From: ianswett <notifications@github.com>
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Subject: Re: [quicwg/base-drafts] Discuss Application-Limited Sending (#1637)
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ianswett commented on this pull request.



> @@ -1047,6 +1045,19 @@ paces the sending of any packets in excess of the initial congestion window.
 A sender MAY implement alternate mechanisms to update its congestion window
 after idle periods, such as those proposed for TCP in {{?RFC7661}}.
 
+## Application Limited Sending
+
+The congestion window should not be increased in slow start or congestion
+avoidance when it is not fully utilized.  The congestion window could be
+under-utilized due to insufficient application data to send or flow control
+limits.
+
+When the sender is pacing (see {{pacing}}) packets, the sender may be unable
+to use the full congestion window for a period of time after receiving
+acknowledgements, due to pacing.  In this case, the sender should not consider
+themselves application limited and should allow the congestion window to
+increase.

Accepted with minor tweaks.

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