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kazuho committed Mar 31, 2020
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13 changes: 6 additions & 7 deletions draft-ietf-quic-recovery.md
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Expand Up @@ -360,8 +360,8 @@ smoothed_rtt = rtt_sample
rttvar = rtt_sample / 2
~~~

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.
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 values.

Expand Down Expand Up @@ -521,11 +521,10 @@ data.

### Handshakes and New Paths

Resumed
connections over the same network SHOULD use the previous connection's final
smoothed RTT value as the resumed connection's initial RTT. When no previous
RTT is available, the initial RTT SHOULD be set to 333ms, resulting in a 1 second
initial timeout, as recommended in {{?RFC6298}}.
Resumed connections over the same network SHOULD use the previous connection's
final smoothed RTT value as the resumed connection's initial RTT. When no
previous RTT is available, the initial RTT SHOULD be set to 333ms, resulting in
a 1 second initial timeout, as recommended in {{?RFC6298}}.

A connection MAY use the delay between sending a PATH_CHALLENGE and receiving a
PATH_RESPONSE to set the initial RTT (see kInitialRtt in
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