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retransmission_queue_test.go
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package quic
import (
"github.com/quic-go/quic-go/internal/protocol"
"github.com/quic-go/quic-go/internal/wire"
. "github.com/onsi/ginkgo/v2"
. "github.com/onsi/gomega"
)
var _ = Describe("Retransmission queue", func() {
var q *retransmissionQueue
BeforeEach(func() {
q = newRetransmissionQueue()
})
Context("Initial data", func() {
It("doesn't dequeue anything when it's empty", func() {
Expect(q.HasInitialData()).To(BeFalse())
Expect(q.GetInitialFrame(protocol.MaxByteCount, protocol.Version1)).To(BeNil())
})
It("queues and retrieves a control frame", func() {
f := &wire.MaxDataFrame{MaximumData: 0x42}
q.addInitial(f)
Expect(q.HasInitialData()).To(BeTrue())
Expect(q.GetInitialFrame(f.Length(protocol.Version1)-1, protocol.Version1)).To(BeNil())
Expect(q.GetInitialFrame(f.Length(protocol.Version1), protocol.Version1)).To(Equal(f))
Expect(q.HasInitialData()).To(BeFalse())
})
It("queues and retrieves a CRYPTO frame", func() {
f := &wire.CryptoFrame{Data: []byte("foobar")}
q.addInitial(f)
Expect(q.HasInitialData()).To(BeTrue())
Expect(q.GetInitialFrame(f.Length(protocol.Version1), protocol.Version1)).To(Equal(f))
Expect(q.HasInitialData()).To(BeFalse())
})
It("returns split CRYPTO frames", func() {
f := &wire.CryptoFrame{
Offset: 100,
Data: []byte("foobar"),
}
q.addInitial(f)
Expect(q.HasInitialData()).To(BeTrue())
f1 := q.GetInitialFrame(f.Length(protocol.Version1)-3, protocol.Version1)
Expect(f1).ToNot(BeNil())
Expect(f1).To(BeAssignableToTypeOf(&wire.CryptoFrame{}))
Expect(f1.(*wire.CryptoFrame).Data).To(Equal([]byte("foo")))
Expect(f1.(*wire.CryptoFrame).Offset).To(Equal(protocol.ByteCount(100)))
Expect(q.HasInitialData()).To(BeTrue())
f2 := q.GetInitialFrame(protocol.MaxByteCount, protocol.Version1)
Expect(f2).ToNot(BeNil())
Expect(f2).To(BeAssignableToTypeOf(&wire.CryptoFrame{}))
Expect(f2.(*wire.CryptoFrame).Data).To(Equal([]byte("bar")))
Expect(f2.(*wire.CryptoFrame).Offset).To(Equal(protocol.ByteCount(103)))
Expect(q.HasInitialData()).To(BeFalse())
})
It("returns other frames when a CRYPTO frame wouldn't fit", func() {
f := &wire.CryptoFrame{Data: []byte("foobar")}
q.addInitial(f)
q.addInitial(&wire.PingFrame{})
f1 := q.GetInitialFrame(2, protocol.Version1) // too small for a CRYPTO frame
Expect(f1).ToNot(BeNil())
Expect(f1).To(BeAssignableToTypeOf(&wire.PingFrame{}))
Expect(q.HasInitialData()).To(BeTrue())
f2 := q.GetInitialFrame(protocol.MaxByteCount, protocol.Version1)
Expect(f2).To(Equal(f))
})
It("retrieves both a CRYPTO frame and a control frame", func() {
cf := &wire.MaxDataFrame{MaximumData: 0x42}
f := &wire.CryptoFrame{Data: []byte("foobar")}
q.addInitial(f)
q.addInitial(cf)
Expect(q.HasInitialData()).To(BeTrue())
Expect(q.GetInitialFrame(protocol.MaxByteCount, protocol.Version1)).To(Equal(f))
Expect(q.GetInitialFrame(protocol.MaxByteCount, protocol.Version1)).To(Equal(cf))
Expect(q.HasInitialData()).To(BeFalse())
})
It("drops all Initial frames", func() {
q.addInitial(&wire.CryptoFrame{Data: []byte("foobar")})
q.addInitial(&wire.MaxDataFrame{MaximumData: 0x42})
q.DropPackets(protocol.EncryptionInitial)
Expect(q.HasInitialData()).To(BeFalse())
Expect(q.GetInitialFrame(protocol.MaxByteCount, protocol.Version1)).To(BeNil())
})
It("retransmits a frame", func() {
f := &wire.MaxDataFrame{MaximumData: 0x42}
q.InitialAckHandler().OnLost(f)
Expect(q.HasInitialData()).To(BeTrue())
Expect(q.GetInitialFrame(protocol.MaxByteCount, protocol.Version1)).To(Equal(f))
})
It("adds a PING", func() {
q.AddPing(protocol.EncryptionInitial)
Expect(q.HasInitialData()).To(BeTrue())
Expect(q.GetInitialFrame(protocol.MaxByteCount, protocol.Version1)).To(Equal(&wire.PingFrame{}))
})
})
Context("Handshake data", func() {
It("doesn't dequeue anything when it's empty", func() {
Expect(q.HasHandshakeData()).To(BeFalse())
Expect(q.GetHandshakeFrame(protocol.MaxByteCount, protocol.Version1)).To(BeNil())
})
It("queues and retrieves a control frame", func() {
f := &wire.MaxDataFrame{MaximumData: 0x42}
q.addHandshake(f)
Expect(q.HasHandshakeData()).To(BeTrue())
Expect(q.GetHandshakeFrame(f.Length(protocol.Version1)-1, protocol.Version1)).To(BeNil())
Expect(q.GetHandshakeFrame(f.Length(protocol.Version1), protocol.Version1)).To(Equal(f))
Expect(q.HasHandshakeData()).To(BeFalse())
})
It("queues and retrieves a CRYPTO frame", func() {
f := &wire.CryptoFrame{Data: []byte("foobar")}
q.addHandshake(f)
Expect(q.HasHandshakeData()).To(BeTrue())
Expect(q.GetHandshakeFrame(f.Length(protocol.Version1), protocol.Version1)).To(Equal(f))
Expect(q.HasHandshakeData()).To(BeFalse())
})
It("returns split CRYPTO frames", func() {
f := &wire.CryptoFrame{
Offset: 100,
Data: []byte("foobar"),
}
q.addHandshake(f)
Expect(q.HasHandshakeData()).To(BeTrue())
f1 := q.GetHandshakeFrame(f.Length(protocol.Version1)-3, protocol.Version1)
Expect(f1).ToNot(BeNil())
Expect(f1).To(BeAssignableToTypeOf(&wire.CryptoFrame{}))
Expect(f1.(*wire.CryptoFrame).Data).To(Equal([]byte("foo")))
Expect(f1.(*wire.CryptoFrame).Offset).To(Equal(protocol.ByteCount(100)))
Expect(q.HasHandshakeData()).To(BeTrue())
f2 := q.GetHandshakeFrame(protocol.MaxByteCount, protocol.Version1)
Expect(f2).ToNot(BeNil())
Expect(f2).To(BeAssignableToTypeOf(&wire.CryptoFrame{}))
Expect(f2.(*wire.CryptoFrame).Data).To(Equal([]byte("bar")))
Expect(f2.(*wire.CryptoFrame).Offset).To(Equal(protocol.ByteCount(103)))
Expect(q.HasHandshakeData()).To(BeFalse())
})
It("returns other frames when a CRYPTO frame wouldn't fit", func() {
f := &wire.CryptoFrame{Data: []byte("foobar")}
q.addHandshake(f)
q.addHandshake(&wire.PingFrame{})
f1 := q.GetHandshakeFrame(2, protocol.Version1) // too small for a CRYPTO frame
Expect(f1).ToNot(BeNil())
Expect(f1).To(BeAssignableToTypeOf(&wire.PingFrame{}))
Expect(q.HasHandshakeData()).To(BeTrue())
f2 := q.GetHandshakeFrame(protocol.MaxByteCount, protocol.Version1)
Expect(f2).To(Equal(f))
})
It("retrieves both a CRYPTO frame and a control frame", func() {
cf := &wire.MaxDataFrame{MaximumData: 0x42}
f := &wire.CryptoFrame{Data: []byte("foobar")}
q.addHandshake(f)
q.addHandshake(cf)
Expect(q.HasHandshakeData()).To(BeTrue())
Expect(q.GetHandshakeFrame(protocol.MaxByteCount, protocol.Version1)).To(Equal(f))
Expect(q.GetHandshakeFrame(protocol.MaxByteCount, protocol.Version1)).To(Equal(cf))
Expect(q.HasHandshakeData()).To(BeFalse())
})
It("drops all Handshake frames", func() {
q.addHandshake(&wire.CryptoFrame{Data: []byte("foobar")})
q.addHandshake(&wire.MaxDataFrame{MaximumData: 0x42})
q.DropPackets(protocol.EncryptionHandshake)
Expect(q.HasHandshakeData()).To(BeFalse())
Expect(q.GetHandshakeFrame(protocol.MaxByteCount, protocol.Version1)).To(BeNil())
})
It("retransmits a frame", func() {
f := &wire.MaxDataFrame{MaximumData: 0x42}
q.HandshakeAckHandler().OnLost(f)
Expect(q.HasHandshakeData()).To(BeTrue())
Expect(q.GetHandshakeFrame(protocol.MaxByteCount, protocol.Version1)).To(Equal(f))
})
It("adds a PING", func() {
q.AddPing(protocol.EncryptionHandshake)
Expect(q.HasHandshakeData()).To(BeTrue())
Expect(q.GetHandshakeFrame(protocol.MaxByteCount, protocol.Version1)).To(Equal(&wire.PingFrame{}))
})
})
Context("Application data", func() {
It("doesn't dequeue anything when it's empty", func() {
Expect(q.GetAppDataFrame(protocol.MaxByteCount, protocol.Version1)).To(BeNil())
})
It("queues and retrieves a control frame", func() {
f := &wire.MaxDataFrame{MaximumData: 0x42}
Expect(q.HasAppData()).To(BeFalse())
q.addAppData(f)
Expect(q.HasAppData()).To(BeTrue())
Expect(q.GetAppDataFrame(f.Length(protocol.Version1)-1, protocol.Version1)).To(BeNil())
Expect(q.GetAppDataFrame(f.Length(protocol.Version1), protocol.Version1)).To(Equal(f))
Expect(q.HasAppData()).To(BeFalse())
})
It("retransmits a frame", func() {
f := &wire.MaxDataFrame{MaximumData: 0x42}
q.AppDataAckHandler().OnLost(f)
Expect(q.HasAppData()).To(BeTrue())
Expect(q.GetAppDataFrame(protocol.MaxByteCount, protocol.Version1)).To(Equal(f))
})
It("adds a PING", func() {
q.AddPing(protocol.Encryption1RTT)
Expect(q.HasAppData()).To(BeTrue())
Expect(q.GetAppDataFrame(protocol.MaxByteCount, protocol.Version1)).To(Equal(&wire.PingFrame{}))
})
})
})