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disable Path MTU Discovery on Windows

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This commit is contained in:
Marten Seemann 2021-09-14 18:39:23 +02:00
parent 3b46d7402c
commit d410b590e9
8 changed files with 56 additions and 34 deletions
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57
session_test.go
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@ -9,6 +9,7 @@ import (
"fmt"
"io"
"net"
"runtime"
"runtime/pprof"
"strings"
"time"
@ -1681,33 +1682,35 @@ var _ = Describe("Session", func() {
time.Sleep(50 * time.Millisecond)
})
It("sends a Path MTU probe packet", func() {
mtuDiscoverer := NewMockMtuDiscoverer(mockCtrl)
sess.mtuDiscoverer = mtuDiscoverer
sess.config.DisablePathMTUDiscovery = false
sph.EXPECT().SentPacket(gomock.Any())
sph.EXPECT().HasPacingBudget().Return(true).AnyTimes()
sph.EXPECT().SendMode().Return(ackhandler.SendAny)
sph.EXPECT().SendMode().Return(ackhandler.SendNone)
written := make(chan struct{}, 1)
sender.EXPECT().WouldBlock().AnyTimes()
sender.EXPECT().Send(gomock.Any()).DoAndReturn(func(p *packetBuffer) { written <- struct{}{} })
gomock.InOrder(
mtuDiscoverer.EXPECT().NextProbeTime(),
mtuDiscoverer.EXPECT().ShouldSendProbe(gomock.Any()).Return(true),
mtuDiscoverer.EXPECT().NextProbeTime(),
)
ping := ackhandler.Frame{Frame: &wire.PingFrame{}}
mtuDiscoverer.EXPECT().GetPing().Return(ping, protocol.ByteCount(1234))
packer.EXPECT().PackMTUProbePacket(ping, protocol.ByteCount(1234)).Return(getPacket(1), nil)
go func() {
defer GinkgoRecover()
cryptoSetup.EXPECT().RunHandshake().MaxTimes(1)
sess.run()
}()
sess.scheduleSending()
Eventually(written).Should(Receive())
})
if runtime.GOOS != "windows" { // Path MTU Discovery is disabled on Windows
It("sends a Path MTU probe packet", func() {
mtuDiscoverer := NewMockMtuDiscoverer(mockCtrl)
sess.mtuDiscoverer = mtuDiscoverer
sess.config.DisablePathMTUDiscovery = false
sph.EXPECT().SentPacket(gomock.Any())
sph.EXPECT().HasPacingBudget().Return(true).AnyTimes()
sph.EXPECT().SendMode().Return(ackhandler.SendAny)
sph.EXPECT().SendMode().Return(ackhandler.SendNone)
written := make(chan struct{}, 1)
sender.EXPECT().WouldBlock().AnyTimes()
sender.EXPECT().Send(gomock.Any()).DoAndReturn(func(p *packetBuffer) { written <- struct{}{} })
gomock.InOrder(
mtuDiscoverer.EXPECT().NextProbeTime(),
mtuDiscoverer.EXPECT().ShouldSendProbe(gomock.Any()).Return(true),
mtuDiscoverer.EXPECT().NextProbeTime(),
)
ping := ackhandler.Frame{Frame: &wire.PingFrame{}}
mtuDiscoverer.EXPECT().GetPing().Return(ping, protocol.ByteCount(1234))
packer.EXPECT().PackMTUProbePacket(ping, protocol.ByteCount(1234)).Return(getPacket(1), nil)
go func() {
defer GinkgoRecover()
cryptoSetup.EXPECT().RunHandshake().MaxTimes(1)
sess.run()
}()
sess.scheduleSending()
Eventually(written).Should(Receive())
})
}
})
Context("scheduling sending", func() {