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refactor DetectLostPackets to match the draft

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This commit is contained in:
Marten Seemann
2019-08-08 15:54:04 +07:00
parent 264eaf2a7b
commit 94a760ecff
1 changed files with 7 additions and 4 deletions
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11
internal/ackhandler/sent_packet_handler.go
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@@ -373,21 +373,24 @@ func (h *sentPacketHandler) detectLostPackets(
// Minimum time of granularity before packets are deemed lost.
lossDelay = utils.MaxDuration(lossDelay, protocol.TimerGranularity)
// Packets sent before this time are deemed lost.
lostSendTime := now.Add(-lossDelay)
var lostPackets []*Packet
pnSpace.history.Iterate(func(packet *Packet) (bool, error) {
if packet.PacketNumber > pnSpace.largestAcked {
return false, nil
}
timeSinceSent := now.Sub(packet.SendTime)
if timeSinceSent > lossDelay {
if packet.SendTime.Before(lostSendTime) {
lostPackets = append(lostPackets, packet)
} else if pnSpace.lossTime.IsZero() {
// Note: This conditional is only entered once per call
lossTime := packet.SendTime.Add(lossDelay)
if h.logger.Debug() {
h.logger.Debugf("\tsetting loss timer for packet %#x (%s) to %s (in %s)", packet.PacketNumber, encLevel, lossDelay, lossDelay-timeSinceSent)
h.logger.Debugf("\tsetting loss timer for packet %#x (%s) to %s (in %s)", packet.PacketNumber, encLevel, lossDelay, lossTime)
}
pnSpace.lossTime = now.Add(lossDelay - timeSinceSent)
pnSpace.lossTime = lossTime
}
return true, nil
})