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check that the client doesn't switch back to 0-RTT after sending 1-RTT

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This commit is contained in:
Marten Seemann 2019-08-10 21:40:10 +07:00
parent c79dfe77b8
commit 40a993e31c
5 changed files with 46 additions and 20 deletions
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38
internal/ackhandler/received_packet_handler_test.go
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@ -25,12 +25,12 @@ var _ = Describe("Received Packet Handler", func() {
It("generates ACKs for different packet number spaces", func() {
sendTime := time.Now().Add(-time.Second)
handler.ReceivedPacket(2, protocol.EncryptionInitial, sendTime, true)
handler.ReceivedPacket(1, protocol.EncryptionHandshake, sendTime, true)
handler.ReceivedPacket(5, protocol.Encryption1RTT, sendTime, true)
handler.ReceivedPacket(3, protocol.EncryptionInitial, sendTime, true)
handler.ReceivedPacket(2, protocol.EncryptionHandshake, sendTime, true)
handler.ReceivedPacket(4, protocol.Encryption1RTT, sendTime, true)
Expect(handler.ReceivedPacket(2, protocol.EncryptionInitial, sendTime, true)).To(Succeed())
Expect(handler.ReceivedPacket(1, protocol.EncryptionHandshake, sendTime, true)).To(Succeed())
Expect(handler.ReceivedPacket(5, protocol.Encryption1RTT, sendTime, true)).To(Succeed())
Expect(handler.ReceivedPacket(3, protocol.EncryptionInitial, sendTime, true)).To(Succeed())
Expect(handler.ReceivedPacket(2, protocol.EncryptionHandshake, sendTime, true)).To(Succeed())
Expect(handler.ReceivedPacket(4, protocol.Encryption1RTT, sendTime, true)).To(Succeed())
initialAck := handler.GetAckFrame(protocol.EncryptionInitial)
Expect(initialAck).ToNot(BeNil())
Expect(initialAck.AckRanges).To(HaveLen(1))
@ -50,18 +50,32 @@ var _ = Describe("Received Packet Handler", func() {
It("uses the same packet number space for 0-RTT and 1-RTT packets", func() {
sendTime := time.Now().Add(-time.Second)
handler.ReceivedPacket(2, protocol.Encryption0RTT, sendTime, true)
handler.ReceivedPacket(3, protocol.Encryption1RTT, sendTime, true)
Expect(handler.ReceivedPacket(2, protocol.Encryption0RTT, sendTime, true)).To(Succeed())
Expect(handler.ReceivedPacket(3, protocol.Encryption1RTT, sendTime, true)).To(Succeed())
ack := handler.GetAckFrame(protocol.Encryption1RTT)
Expect(ack).ToNot(BeNil())
Expect(ack.AckRanges).To(HaveLen(1))
Expect(ack.AckRanges[0]).To(Equal(wire.AckRange{Smallest: 2, Largest: 3}))
})
It("rejects 0-RTT packets with higher packet numbers than 1-RTT packets", func() {
sendTime := time.Now()
Expect(handler.ReceivedPacket(10, protocol.Encryption0RTT, sendTime, true)).To(Succeed())
Expect(handler.ReceivedPacket(11, protocol.Encryption1RTT, sendTime, true)).To(Succeed())
Expect(handler.ReceivedPacket(12, protocol.Encryption0RTT, sendTime, true)).To(MatchError("received packet number 12 on a 0-RTT packet after receiving 11 on a 1-RTT packet"))
})
It("allows reordered 0-RTT packets", func() {
sendTime := time.Now()
Expect(handler.ReceivedPacket(10, protocol.Encryption0RTT, sendTime, true)).To(Succeed())
Expect(handler.ReceivedPacket(12, protocol.Encryption1RTT, sendTime, true)).To(Succeed())
Expect(handler.ReceivedPacket(11, protocol.Encryption0RTT, sendTime, true)).To(Succeed())
})
It("drops Initial packets", func() {
sendTime := time.Now().Add(-time.Second)
handler.ReceivedPacket(2, protocol.EncryptionInitial, sendTime, true)
handler.ReceivedPacket(1, protocol.EncryptionHandshake, sendTime, true)
Expect(handler.ReceivedPacket(2, protocol.EncryptionInitial, sendTime, true)).To(Succeed())
Expect(handler.ReceivedPacket(1, protocol.EncryptionHandshake, sendTime, true)).To(Succeed())
Expect(handler.GetAckFrame(protocol.EncryptionInitial)).ToNot(BeNil())
handler.DropPackets(protocol.EncryptionInitial)
Expect(handler.GetAckFrame(protocol.EncryptionInitial)).To(BeNil())
@ -70,8 +84,8 @@ var _ = Describe("Received Packet Handler", func() {
It("drops Handshake packets", func() {
sendTime := time.Now().Add(-time.Second)
handler.ReceivedPacket(1, protocol.EncryptionHandshake, sendTime, true)
handler.ReceivedPacket(2, protocol.Encryption1RTT, sendTime, true)
Expect(handler.ReceivedPacket(1, protocol.EncryptionHandshake, sendTime, true)).To(Succeed())
Expect(handler.ReceivedPacket(2, protocol.Encryption1RTT, sendTime, true)).To(Succeed())
Expect(handler.GetAckFrame(protocol.EncryptionHandshake)).ToNot(BeNil())
handler.DropPackets(protocol.EncryptionInitial)
Expect(handler.GetAckFrame(protocol.EncryptionHandshake)).To(BeNil())