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Reset connection state on retry and VN #2040

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Nov 27, 2018
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Reset connection state on retry and VN #2040

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Alternate patch
janaiyengar Nov 21, 2018
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janaiyengar Nov 22, 2018
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14 changes: 9 additions & 5 deletions draft-ietf-quic-recovery.md
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Expand Up @@ -433,11 +433,15 @@ When crypto packets are outstanding, the TLP and RTO timers are not active.
#### Retry and Version Negotiation

A Retry or Version Negotiation packet causes a client to send another Initial
packet, effectively restarting the connection process.

Either packet indicates that the Initial was received but not processed.
Neither packet can be treated as an acknowledgment for the Initial, but they MAY
be used to improve the RTT estimate.
packet, effectively restarting the connection process and resetting congestion
control and loss recovery state, including resetting any pending timers. Either
packet indicates that the Initial was received but not processed. Neither
packet can be treated as an acknowledgment for the Initial.

The client MAY however compute an RTT estimate to the server as the time period
from when the first Initial was sent to when a Retry or a Version Negotiation
packet is received. The client MAY use this value to seed the RTT estimator for
a subsequent connection attempt to the server.

### Tail Loss Probe {#tlp}

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