gr1ffon/quic-go
1
0
Fork 0
forked from quic-go/quic-go
Code Pull Requests Activity

initialize the MTU discoverer immediately

Browse Source
This commit is contained in:
Marten Seemann
2023-04-17 23:42:58 +02:00
parent 727f9e5654
commit ecaef04695
4 changed files with 67 additions and 20 deletions
Download Patch File Download Diff File Expand all files Collapse all files

16
mtu_discoverer_test.go
View File

@@ -19,7 +19,7 @@ var _ = Describe("MTU Discoverer", func() {
)
var (
d mtuDiscoverer
d *mtuFinder
rttStats *utils.RTTStats
now time.Time
discoveredMTU protocol.ByteCount
@@ -29,9 +29,9 @@ var _ = Describe("MTU Discoverer", func() {
rttStats = &utils.RTTStats{}
rttStats.SetInitialRTT(rtt)
Expect(rttStats.SmoothedRTT()).To(Equal(rtt))
d = newMTUDiscoverer(rttStats, startMTU, maxMTU, func(s protocol.ByteCount) { discoveredMTU = s })
d = newMTUDiscoverer(rttStats, startMTU, func(s protocol.ByteCount) { discoveredMTU = s })
d.Start(maxMTU)
now = time.Now()
_ = discoveredMTU
})
It("only allows a probe 5 RTTs after the handshake completes", func() {
@@ -77,13 +77,21 @@ var _ = Describe("MTU Discoverer", func() {
Expect(d.ShouldSendProbe(t.Add(10 * rtt))).To(BeFalse())
})
It("doesn't do discovery before being started", func() {
d := newMTUDiscoverer(rttStats, startMTU, func(s protocol.ByteCount) {})
for i := 0; i < 5; i++ {
Expect(d.ShouldSendProbe(time.Now())).To(BeFalse())
}
})
It("finds the MTU", func() {
const rep = 3000
var maxDiff protocol.ByteCount
for i := 0; i < rep; i++ {
max := protocol.ByteCount(rand.Intn(int(3000-startMTU))) + startMTU + 1
currentMTU := startMTU
d := newMTUDiscoverer(rttStats, startMTU, max, func(s protocol.ByteCount) { currentMTU = s })
d := newMTUDiscoverer(rttStats, startMTU, func(s protocol.ByteCount) { currentMTU = s })
d.Start(max)
now := time.Now()
realMTU := protocol.ByteCount(rand.Intn(int(max-startMTU))) + startMTU
t := now.Add(mtuProbeDelay * rtt)