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Addressing editorial from Ian
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gloinul committed Jul 13, 2018
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14 changes: 8 additions & 6 deletions draft-ietf-quic-transport.md
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Expand Up @@ -1739,12 +1739,14 @@ network, an endpoint verifies the following when an ACK_ECN frame is received:
* The increase in ECT(0) and ECT(1) counters MUST be no greater than the number
of packets newly acknowledged that were sent with the corresponding codepoint.

* If the increase in the ECT(0), ECT(1) and CE counters are greater than the
number of newly ACKed packets, and received ACK's smallest acknowledged is
larger than the previous largest acknowledged, then it's likely
acknowledgements were missed, and the above comparison MUST NOT be
performed. Instead a new comparision point is stored by the sender so that
only changes after this point will be used in the future comaparisions.
* If the increase in the ECT(0), ECT(1) and CE counters are greater than
the number of newly acknowledged packets, and the received ACK's
smallest acknowledged is larger than the previous largest acknowledged,
then it's likely acknowledgements were missed, and the above comparison
MUST NOT be performed. Instead a new comparision point is stored by the
sender so that only changes after this point will be used in the future
comaparisions.

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@mikkelfj

mikkelfj Jul 13, 2018

Contributor

comaparisions ?



Upon successful verification, an endpoint continues to set ECT codepoints in
subsequent packets with the expectation that the path is ECN-capable.
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