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implement a function to pack MTU probe packets

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This commit is contained in:
Marten Seemann 2021-01-25 16:41:28 +08:00
parent 91a314258d
commit fb5a45ac53
2 changed files with 55 additions and 24 deletions
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15
packet_packer_test.go
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@ -1439,6 +1439,21 @@ var _ = Describe("Packet packer", func() {
Expect(err).ToNot(HaveOccurred())
Expect(packet).To(BeNil())
})
It("packs an MTU probe packet", func() {
sealingManager.EXPECT().Get1RTTSealer().Return(getSealer(), nil)
pnManager.EXPECT().PeekPacketNumber(protocol.Encryption1RTT).Return(protocol.PacketNumber(0x43), protocol.PacketNumberLen2)
pnManager.EXPECT().PopPacketNumber(protocol.Encryption1RTT).Return(protocol.PacketNumber(0x43))
ping := ackhandler.Frame{Frame: &wire.PingFrame{}}
const probePacketSize = maxPacketSize + 42
p, err := packer.PackMTUProbePacket(ping, probePacketSize)
Expect(err).ToNot(HaveOccurred())
Expect(p.length).To(BeEquivalentTo(probePacketSize))
Expect(p.header.IsLongHeader).To(BeFalse())
Expect(p.header.PacketNumber).To(Equal(protocol.PacketNumber(0x43)))
Expect(p.EncryptionLevel()).To(Equal(protocol.Encryption1RTT))
Expect(p.buffer.Data).To(HaveLen(int(probePacketSize)))
})
})
})
})