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eliminate the difference between when having no RTT sample and having one #3525

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Apr 18, 2020
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eliminate the difference between when having no RTT sample and having one #3525

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eliminate the different between when having no RTT sample and having one
kazuho Mar 15, 2020
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to be clear, split paragraphs that discuss no rtt sample vs. 1 rtt sa…
kazuho Mar 16, 2020
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Update draft-ietf-quic-recovery.md
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8 changes: 3 additions & 5 deletions draft-ietf-quic-recovery.md
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Expand Up @@ -360,12 +360,10 @@ smoothed_rtt = rtt_sample
rttvar = rtt_sample / 2
~~~

where rtt_sample is the initial RTT.

On the first RTT sample for the network path, smoothed_rtt and rttvar are set to
the values using the formula above, using that first RTT sample as rtt_sample.
Before any RTT samples are available, the initial RTT is used as rtt_sample.
On the first RTT sample for the network path, that sample is used as rtt_sample.
This ensures that the first measurement erases the history of any persisted or
default value.
default values.

On subsequent RTT samples, smoothed_rtt and rttvar evolve as follows:
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