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move the initial RTT estimate to the congestion package

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This commit is contained in:
Marten Seemann 2018-05-01 18:57:05 +09:00
parent 4a7bab9ffe
commit 3cd6cc3e9f
4 changed files with 19 additions and 16 deletions
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14
internal/ackhandler/sent_packet_handler.go
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@ -16,8 +16,6 @@ const (
// Maximum reordering in time space before time based loss detection considers a packet lost.
// In fraction of an RTT.
timeReorderingFraction = 1.0 / 8
// The default RTT used before an RTT sample is taken.
defaultInitialRTT = 100 * time.Millisecond
// defaultRTOTimeout is the RTO time on new connections
defaultRTOTimeout = 500 * time.Millisecond
// Minimum time in the future a tail loss probe alarm may be set for.
@ -567,11 +565,7 @@ func (h *sentPacketHandler) queuePacketForRetransmission(p *Packet) error {
}
func (h *sentPacketHandler) computeHandshakeTimeout() time.Duration {
duration := 2 * h.rttStats.SmoothedRTT()
if duration == 0 {
duration = 2 * defaultInitialRTT
}
duration = utils.MaxDuration(duration, minTPLTimeout)
duration := utils.MaxDuration(2*h.rttStats.SmoothedOrInitialRTT(), minTPLTimeout)
// exponential backoff
// There's an implicit limit to this set by the handshake timeout.
return duration << h.handshakeCount
@ -579,11 +573,7 @@ func (h *sentPacketHandler) computeHandshakeTimeout() time.Duration {
func (h *sentPacketHandler) computeTLPTimeout() time.Duration {
// TODO(#1236): include the max_ack_delay
srtt := h.rttStats.SmoothedRTT()
if srtt == 0 {
srtt = defaultInitialRTT
}
return utils.MaxDuration(srtt*3/2, minTPLTimeout)
return utils.MaxDuration(h.rttStats.SmoothedOrInitialRTT()*3/2, minTPLTimeout)
}
func (h *sentPacketHandler) computeRTOTimeout() time.Duration {