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Update draft-ietf-quic-recovery.md
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ianswett committed Apr 9, 2020
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8 changes: 4 additions & 4 deletions draft-ietf-quic-recovery.md
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Expand Up @@ -502,10 +502,10 @@ expiration before it has the keys to process an acknowledgement.

When a PTO timer expires, the PTO backoff MUST be increased, resulting in the
PTO period being set to twice its current value. The PTO period is set based
on the latest RTT information when receiving an acknowledgement. The PTO backoff
is not decreased while the server is validating the client's address, to ensure
the client's anti-deadlock timer does not fire too aggressively when the server
does not yet have handshake data to send.
on the latest RTT information when receiving an acknowledgement. The client's
PTO backoff is not decreased while the server is validating the client's address,
to ensure the client's anti-deadlock timer does not fire too aggressively when
the server does not yet have handshake data to send.

This exponential reduction in the sender's rate is important because
consecutive PTOs might be caused by loss of packets or acknowledgements due to
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