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move calculation of the PTO to the rttStats

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The PTO value is needed at various places in the protocol. Calculating
it on the rttStats struct will allow us to pass around this struct.
This commit is contained in:
Marten Seemann 2019-06-29 14:49:33 +07:00
parent 4366eac105
commit 66abcdfc5c
4 changed files with 23 additions and 19 deletions
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14
internal/ackhandler/sent_packet_handler_test.go
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@ -611,20 +611,6 @@ var _ = Describe("SentPacketHandler", func() {
})
Context("probe packets", func() {
It("uses the RTT from RTT stats", func() {
rtt := 2 * time.Second
updateRTT(rtt)
Expect(handler.rttStats.SmoothedOrInitialRTT()).To(Equal(2 * time.Second))
Expect(handler.rttStats.MeanDeviation()).To(Equal(time.Second))
Expect(handler.computePTOTimeout()).To(Equal(time.Duration(2+4) * time.Second))
})
It("uses the granularity for short RTTs", func() {
rtt := time.Microsecond
updateRTT(rtt)
Expect(handler.computePTOTimeout()).To(Equal(rtt + protocol.TimerGranularity))
})
It("implements exponential backoff", func() {
sendTime := time.Now().Add(-time.Hour)
handler.SentPacket(ackElicitingPacket(&Packet{PacketNumber: 1, SendTime: sendTime}))