Re: [quicwg/base-drafts] Simplify UpdateRtt pseudocode (#2610)

Martin Thomson <notifications@github.com> Fri, 12 April 2019 06:52 UTC

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Subject: Re: [quicwg/base-drafts] Simplify UpdateRtt pseudocode (#2610)
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martinthomson approved this pull request.

This looks good.

> @@ -1101,22 +1101,24 @@ OnAckReceived(ack, pn_space):
 
 
 UpdateRtt(latest_rtt, ack_delay):

latest_rtt probably shouldn't be global.

> @@ -1101,22 +1101,24 @@ OnAckReceived(ack, pn_space):
 
 
 UpdateRtt(latest_rtt, ack_delay):
+  if (smoothed_rtt == 0):
+    // First RTT sample.

I don't think so.  #2607 covers this though.

>    adjusted_rtt = latest_rtt
-  if (latest_rtt - min_rtt > ack_delay):
+  if (latest_rtt > min_rtt + ack_delay):
     adjusted_rtt = latest_rtt - ack_delay

The prose relies on latest_rtt in descriptions.  Adjusting that value directly would confuse things.

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