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ackhandler: use the receive time of the Retry packet for RTT estimation (#4070)

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This commit is contained in:
Marten Seemann
2023-09-09 20:12:19 +07:00
committed by GitHub
parent dc0369cad4
commit 54b76ceb3e
6 changed files with 32 additions and 26 deletions
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3
internal/ackhandler/sent_packet_handler.go
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@@ -824,7 +824,7 @@ func (h *sentPacketHandler) queueFramesForRetransmission(p *packet) {
p.Frames = nil
}
func (h *sentPacketHandler) ResetForRetry() error {
func (h *sentPacketHandler) ResetForRetry(now time.Time) error {
h.bytesInFlight = 0
var firstPacketSendTime time.Time
h.initialPackets.history.Iterate(func(p *packet) (bool, error) {
@@ -850,7 +850,6 @@ func (h *sentPacketHandler) ResetForRetry() error {
// Otherwise, we don't know which Initial the Retry was sent in response to.
if h.ptoCount == 0 {
// Don't set the RTT to a value lower than 5ms here.
now := time.Now()
h.rttStats.UpdateRTT(utils.Max(minRTTAfterRetry, now.Sub(firstPacketSendTime)), 0, now)
if h.logger.Debug() {
h.logger.Debugf("\tupdated RTT: %s (σ: %s)", h.rttStats.SmoothedRTT(), h.rttStats.MeanDeviation())