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Port #2245
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@martinthomson
martinthomson committed Jan 6, 2019
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5 changes: 3 additions & 2 deletions draft-ietf-quic-transport.md
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Expand Up @@ -2843,8 +2843,9 @@ discussed in more detail in {{QUIC-RECOVERY}}.

To limit the ranges of acknowledged packet numbers to those that have not yet
been received by the sender, the receiver SHOULD track which ACK frames have
been acknowledged by its peer. Once an ACK frame has been acknowledged, the
packets it acknowledges SHOULD NOT be acknowledged again.
been acknowledged by its peer. The receiver SHOULD exclude already acknowledged
packets from future ACK frames whenever these packets would unnecessarily
contribute to the ACK frame size.

Because ACK frames are not sent in response to ACK-only packets, a receiver that
is only sending ACK frames will only receive acknowledgements for its packets
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