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calculate highest in-order ACKed packet from an ACK frame

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This commit is contained in:
Marten Seemann
2016-04-20 19:37:20 +07:00
parent 184890cb4a
commit cfb74dbf06
2 changed files with 37 additions and 2 deletions
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27
frames/ack_frame_test.go
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@@ -73,6 +73,33 @@ var _ = Describe("AckFrame", func() {
Expect(frame.NackRanges[2].Length).To(Equal(uint8(1)))
Expect(b.Len()).To(Equal(0))
})
It("gets the highest in order packet number for an ACK without NACK ranges", func() {
frame := AckFrame{LargestObserved: 5}
Expect(frame.GetHighestInOrderPacket()).To(Equal(protocol.PacketNumber(5)))
})
It("gets the highest in order packet number for an ACK with one NACK ranges", func() {
nackRange := NackRange{FirstPacketNumber: 3, Length: 2}
frame := AckFrame{
LargestObserved: 6,
NackRanges: []NackRange{nackRange},
}
Expect(frame.GetHighestInOrderPacket()).To(Equal(protocol.PacketNumber(2)))
})
It("gets the highest in order packet number for an ACK with one NACK ranges", func() {
nackRanges := []NackRange{
NackRange{FirstPacketNumber: 9, Length: 3},
NackRange{FirstPacketNumber: 7, Length: 1},
NackRange{FirstPacketNumber: 4, Length: 2},
}
frame := &AckFrame{
LargestObserved: 15,
NackRanges: nackRanges,
}
Expect(frame.GetHighestInOrderPacket()).To(Equal(protocol.PacketNumber(3)))
})
})
Context("when writing", func() {