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Spin bit is path-bound #3984

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merged 2 commits into from Aug 18, 2020
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Spin bit is path-bound #3984

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a3f8e95
Spin bit is path-bound
martinthomson Aug 5, 2020
0f5dfe5
First packet with a given connection ID
martinthomson Aug 13, 2020
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4 changes: 2 additions & 2 deletions draft-ietf-quic-transport.md
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Expand Up @@ -4947,8 +4947,8 @@ When a client receives a short header packet that increases the highest packet
number seen by the client from the server on a given network path, it sets the
spin value for that path to the inverse of the spin bit in the received packet.

An endpoint resets the spin value for a network path to zero when sending the
first packet of a given connection with a new connection ID.
An endpoint resets the spin value for a network path to zero when changing the
connection ID being used on that network path.

With this mechanism, the server reflects the spin value received, while the
client 'spins' it after one RTT. On-path observers can measure the time
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