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correctly handle key updates within the 3 PTO period

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We need to:
* stop the timer to drop the previous generation
* correctly log that the N-1 keys are dropped immediately when keys are
updated to N+1
This commit is contained in:
Marten Seemann 2020-09-15 09:55:58 +07:00
parent 27448c1fa5
commit e94db952b7
2 changed files with 86 additions and 5 deletions
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8
internal/handshake/updatable_aead.go
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@ -100,6 +100,14 @@ func newUpdatableAEAD(rttStats *utils.RTTStats, tracer logging.ConnectionTracer,
}
func (a *updatableAEAD) rollKeys() {
if a.prevRcvAEAD != nil {
a.logger.Debugf("Dropping key phase %d ahead of scheduled time. Drop time was: %s", a.keyPhase-1, a.prevRcvAEADExpiry)
if a.tracer != nil {
a.tracer.DroppedKey(a.keyPhase - 1)
}
a.prevRcvAEADExpiry = time.Time{}
}
a.keyPhase++
a.firstRcvdWithCurrentKey = protocol.InvalidPacketNumber
a.firstSentWithCurrentKey = protocol.InvalidPacketNumber