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add a unit test for ACK of skipped packet detection

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This commit is contained in:
Marten Seemann 2020-11-22 11:02:48 +07:00
parent ed1956f5a9
commit fb6a536adb
1 changed files with 7 additions and 0 deletions
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7
internal/ackhandler/sent_packet_handler_test.go
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@ -171,6 +171,13 @@ var _ = Describe("SentPacketHandler", func() {
Expect(handler.appDataPackets.largestAcked).To(Equal(protocol.PacketNumber(4)))
})
It("rejects ACKs that acknowledge a skipped packet number", func() {
handler.SentPacket(ackElicitingPacket(&Packet{PacketNumber: 100}))
handler.SentPacket(ackElicitingPacket(&Packet{PacketNumber: 102}))
ack := &wire.AckFrame{AckRanges: []wire.AckRange{{Smallest: 100, Largest: 102}}}
Expect(handler.ReceivedAck(ack, protocol.Encryption1RTT, time.Now())).To(MatchError("received an ACK for skipped packet number: 101 (1-RTT)"))
})
It("rejects ACKs with a too high LargestAcked packet number", func() {
ack := &wire.AckFrame{AckRanges: []wire.AckRange{{Smallest: 0, Largest: 9999}}}
Expect(handler.ReceivedAck(ack, protocol.Encryption1RTT, time.Now())).To(MatchError("PROTOCOL_VIOLATION: Received ACK for an unsent packet"))