695 lines
22 KiB
Go
695 lines
22 KiB
Go
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package quic
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import (
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"errors"
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"math"
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"time"
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"github.com/lucas-clemente/quic-go/handshake"
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"github.com/lucas-clemente/quic-go/protocol"
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"github.com/lucas-clemente/quic-go/qerr"
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. "github.com/onsi/ginkgo"
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. "github.com/onsi/gomega"
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)
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type mockConnectionParametersManager struct {
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maxIncomingStreams uint32
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maxOutgoingStreams uint32
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idleTime time.Duration
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}
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func (m *mockConnectionParametersManager) SetFromMap(map[handshake.Tag][]byte) error {
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panic("not implemented")
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}
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func (m *mockConnectionParametersManager) GetHelloMap() (map[handshake.Tag][]byte, error) {
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panic("not implemented")
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}
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func (m *mockConnectionParametersManager) GetSendStreamFlowControlWindow() protocol.ByteCount {
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return math.MaxUint64
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}
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func (m *mockConnectionParametersManager) GetSendConnectionFlowControlWindow() protocol.ByteCount {
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return math.MaxUint64
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}
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func (m *mockConnectionParametersManager) GetReceiveStreamFlowControlWindow() protocol.ByteCount {
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return math.MaxUint64
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}
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func (m *mockConnectionParametersManager) GetMaxReceiveStreamFlowControlWindow() protocol.ByteCount {
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return math.MaxUint64
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}
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func (m *mockConnectionParametersManager) GetReceiveConnectionFlowControlWindow() protocol.ByteCount {
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return math.MaxUint64
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}
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func (m *mockConnectionParametersManager) GetMaxReceiveConnectionFlowControlWindow() protocol.ByteCount {
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return math.MaxUint64
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}
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func (m *mockConnectionParametersManager) GetMaxOutgoingStreams() uint32 { return m.maxOutgoingStreams }
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func (m *mockConnectionParametersManager) GetMaxIncomingStreams() uint32 { return m.maxIncomingStreams }
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func (m *mockConnectionParametersManager) GetIdleConnectionStateLifetime() time.Duration {
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return m.idleTime
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}
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func (m *mockConnectionParametersManager) TruncateConnectionID() bool { return false }
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var _ handshake.ConnectionParametersManager = &mockConnectionParametersManager{}
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var _ = Describe("Streams Map", func() {
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var (
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cpm handshake.ConnectionParametersManager
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m *streamsMap
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)
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setNewStreamsMap := func(p protocol.Perspective) {
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m = newStreamsMap(nil, p, cpm)
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m.newStream = func(id protocol.StreamID) (*stream, error) {
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return &stream{streamID: id}, nil
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}
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}
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BeforeEach(func() {
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cpm = &mockConnectionParametersManager{
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maxIncomingStreams: 75,
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maxOutgoingStreams: 60,
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}
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})
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AfterEach(func() {
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Expect(m.openStreams).To(HaveLen(len(m.streams)))
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})
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Context("getting and creating streams", func() {
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Context("as a server", func() {
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BeforeEach(func() {
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setNewStreamsMap(protocol.PerspectiveServer)
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})
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Context("client-side streams", func() {
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It("gets new streams", func() {
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s, err := m.GetOrOpenStream(1)
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Expect(err).NotTo(HaveOccurred())
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Expect(s.StreamID()).To(Equal(protocol.StreamID(1)))
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Expect(m.numIncomingStreams).To(BeEquivalentTo(1))
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Expect(m.numOutgoingStreams).To(BeZero())
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})
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It("rejects streams with even IDs", func() {
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_, err := m.GetOrOpenStream(6)
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Expect(err).To(MatchError("InvalidStreamID: attempted to open stream 6 from client-side"))
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})
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It("gets existing streams", func() {
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s, err := m.GetOrOpenStream(5)
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Expect(err).NotTo(HaveOccurred())
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numStreams := m.numIncomingStreams
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s, err = m.GetOrOpenStream(5)
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Expect(err).NotTo(HaveOccurred())
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Expect(s.StreamID()).To(Equal(protocol.StreamID(5)))
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Expect(m.numIncomingStreams).To(Equal(numStreams))
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})
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It("returns nil for closed streams", func() {
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s, err := m.GetOrOpenStream(5)
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Expect(err).NotTo(HaveOccurred())
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err = m.RemoveStream(5)
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Expect(err).NotTo(HaveOccurred())
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s, err = m.GetOrOpenStream(5)
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Expect(err).NotTo(HaveOccurred())
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Expect(s).To(BeNil())
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})
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It("opens skipped streams", func() {
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_, err := m.GetOrOpenStream(5)
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Expect(err).NotTo(HaveOccurred())
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Expect(m.streams).To(HaveKey(protocol.StreamID(1)))
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Expect(m.streams).To(HaveKey(protocol.StreamID(3)))
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Expect(m.streams).To(HaveKey(protocol.StreamID(5)))
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})
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It("doesn't reopen an already closed stream", func() {
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_, err := m.GetOrOpenStream(5)
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Expect(err).ToNot(HaveOccurred())
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err = m.RemoveStream(5)
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Expect(err).ToNot(HaveOccurred())
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str, err := m.GetOrOpenStream(5)
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Expect(err).ToNot(HaveOccurred())
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Expect(str).To(BeNil())
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})
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Context("counting streams", func() {
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var maxNumStreams int
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BeforeEach(func() {
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maxNumStreams = int(cpm.GetMaxIncomingStreams())
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})
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It("errors when too many streams are opened", func() {
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for i := 0; i < maxNumStreams; i++ {
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_, err := m.GetOrOpenStream(protocol.StreamID(i*2 + 1))
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Expect(err).NotTo(HaveOccurred())
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}
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_, err := m.GetOrOpenStream(protocol.StreamID(2*maxNumStreams + 3))
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Expect(err).To(MatchError(qerr.TooManyOpenStreams))
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})
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It("errors when too many streams are opened implicitely", func() {
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_, err := m.GetOrOpenStream(protocol.StreamID(maxNumStreams*2 + 1))
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Expect(err).To(MatchError(qerr.TooManyOpenStreams))
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})
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It("does not error when many streams are opened and closed", func() {
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for i := 2; i < 10*maxNumStreams; i++ {
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_, err := m.GetOrOpenStream(protocol.StreamID(i*2 + 1))
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Expect(err).NotTo(HaveOccurred())
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m.RemoveStream(protocol.StreamID(i*2 + 1))
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}
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})
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})
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})
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Context("server-side streams", func() {
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It("opens a stream 2 first", func() {
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s, err := m.OpenStream()
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Expect(err).ToNot(HaveOccurred())
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Expect(s).ToNot(BeNil())
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Expect(s.StreamID()).To(Equal(protocol.StreamID(2)))
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Expect(m.numIncomingStreams).To(BeZero())
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Expect(m.numOutgoingStreams).To(BeEquivalentTo(1))
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})
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It("errors if the stream can't be created", func() {
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testErr := errors.New("test error")
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m.newStream = func(protocol.StreamID) (*stream, error) { return nil, testErr }
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_, err := m.OpenStream()
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Expect(err).To(MatchError(testErr))
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})
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Context("counting streams", func() {
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var maxNumStreams int
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BeforeEach(func() {
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maxNumStreams = int(cpm.GetMaxOutgoingStreams())
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})
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It("errors when too many streams are opened", func() {
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for i := 1; i <= maxNumStreams; i++ {
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_, err := m.OpenStream()
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Expect(err).NotTo(HaveOccurred())
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}
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_, err := m.OpenStream()
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Expect(err).To(MatchError(qerr.TooManyOpenStreams))
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})
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It("does not error when many streams are opened and closed", func() {
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for i := 2; i < 10*maxNumStreams; i++ {
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str, err := m.OpenStream()
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Expect(err).NotTo(HaveOccurred())
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m.RemoveStream(str.StreamID())
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}
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})
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It("allows many server- and client-side streams at the same time", func() {
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for i := 1; i < int(cpm.GetMaxOutgoingStreams()); i++ {
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_, err := m.OpenStream()
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Expect(err).ToNot(HaveOccurred())
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}
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for i := 0; i < int(cpm.GetMaxIncomingStreams()); i++ {
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_, err := m.GetOrOpenStream(protocol.StreamID(2*i + 1))
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Expect(err).ToNot(HaveOccurred())
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}
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})
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})
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Context("opening streams synchronously", func() {
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var maxNumStreams int
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BeforeEach(func() {
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maxNumStreams = int(cpm.GetMaxOutgoingStreams())
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})
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openMaxNumStreams := func() {
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for i := 1; i <= maxNumStreams; i++ {
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_, err := m.OpenStream()
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Expect(err).NotTo(HaveOccurred())
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}
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_, err := m.OpenStream()
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Expect(err).To(MatchError(qerr.TooManyOpenStreams))
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}
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It("waits until another stream is closed", func() {
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openMaxNumStreams()
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var returned bool
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var str *stream
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go func() {
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defer GinkgoRecover()
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var err error
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str, err = m.OpenStreamSync()
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Expect(err).ToNot(HaveOccurred())
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returned = true
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}()
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Consistently(func() bool { return returned }).Should(BeFalse())
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err := m.RemoveStream(6)
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Expect(err).ToNot(HaveOccurred())
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Eventually(func() bool { return returned }).Should(BeTrue())
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Expect(str.StreamID()).To(Equal(protocol.StreamID(2*maxNumStreams + 2)))
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})
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It("errors if the stream can't be created", func() {
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testErr := errors.New("test error")
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m.newStream = func(protocol.StreamID) (*stream, error) { return nil, testErr }
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_, err := m.OpenStreamSync()
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Expect(err).To(MatchError(testErr))
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})
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It("stops waiting when an error is registered", func() {
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openMaxNumStreams()
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testErr := errors.New("test error")
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var err error
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var returned bool
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go func() {
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_, err = m.OpenStreamSync()
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returned = true
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}()
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Consistently(func() bool { return returned }).Should(BeFalse())
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m.CloseWithError(testErr)
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Eventually(func() bool { return returned }).Should(BeTrue())
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Expect(err).To(MatchError(testErr))
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})
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It("immediately returns when OpenStreamSync is called after an error was registered", func() {
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testErr := errors.New("test error")
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m.CloseWithError(testErr)
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_, err := m.OpenStreamSync()
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Expect(err).To(MatchError(testErr))
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})
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})
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})
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Context("accepting streams", func() {
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It("does nothing if no stream is opened", func() {
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var accepted bool
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go func() {
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_, _ = m.AcceptStream()
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accepted = true
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}()
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Consistently(func() bool { return accepted }).Should(BeFalse())
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})
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It("accepts stream 1 first", func() {
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var str *stream
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go func() {
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defer GinkgoRecover()
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var err error
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str, err = m.AcceptStream()
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Expect(err).ToNot(HaveOccurred())
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}()
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_, err := m.GetOrOpenStream(1)
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Expect(err).ToNot(HaveOccurred())
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Eventually(func() Stream { return str }).ShouldNot(BeNil())
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Expect(str.StreamID()).To(Equal(protocol.StreamID(1)))
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})
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It("returns an implicitly opened stream, if a stream number is skipped", func() {
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var str *stream
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go func() {
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defer GinkgoRecover()
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var err error
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str, err = m.AcceptStream()
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Expect(err).ToNot(HaveOccurred())
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}()
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_, err := m.GetOrOpenStream(5)
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Expect(err).ToNot(HaveOccurred())
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Eventually(func() Stream { return str }).ShouldNot(BeNil())
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Expect(str.StreamID()).To(Equal(protocol.StreamID(1)))
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})
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It("returns to multiple accepts", func() {
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var str1, str2 *stream
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go func() {
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defer GinkgoRecover()
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var err error
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str1, err = m.AcceptStream()
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Expect(err).ToNot(HaveOccurred())
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}()
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go func() {
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defer GinkgoRecover()
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var err error
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str2, err = m.AcceptStream()
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Expect(err).ToNot(HaveOccurred())
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}()
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_, err := m.GetOrOpenStream(3) // opens stream 1 and 3
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Expect(err).ToNot(HaveOccurred())
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Eventually(func() *stream { return str1 }).ShouldNot(BeNil())
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Eventually(func() *stream { return str2 }).ShouldNot(BeNil())
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Expect(str1.StreamID()).ToNot(Equal(str2.StreamID()))
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Expect(str1.StreamID() + str2.StreamID()).To(BeEquivalentTo(1 + 3))
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})
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It("waits a new stream is available", func() {
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var str *stream
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go func() {
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defer GinkgoRecover()
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var err error
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str, err = m.AcceptStream()
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Expect(err).ToNot(HaveOccurred())
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}()
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Consistently(func() *stream { return str }).Should(BeNil())
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_, err := m.GetOrOpenStream(1)
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Expect(err).ToNot(HaveOccurred())
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Eventually(func() *stream { return str }).ShouldNot(BeNil())
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Expect(str.StreamID()).To(Equal(protocol.StreamID(1)))
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})
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It("returns multiple streams on subsequent Accept calls, if available", func() {
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var str *stream
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go func() {
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defer GinkgoRecover()
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var err error
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str, err = m.AcceptStream()
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Expect(err).ToNot(HaveOccurred())
|
||
|
|
}()
|
||
|
|
_, err := m.GetOrOpenStream(3)
|
||
|
|
Expect(err).ToNot(HaveOccurred())
|
||
|
|
Eventually(func() *stream { return str }).ShouldNot(BeNil())
|
||
|
|
Expect(str.StreamID()).To(Equal(protocol.StreamID(1)))
|
||
|
|
str, err = m.AcceptStream()
|
||
|
|
Expect(err).ToNot(HaveOccurred())
|
||
|
|
Expect(str.StreamID()).To(Equal(protocol.StreamID(3)))
|
||
|
|
})
|
||
|
|
|
||
|
|
It("blocks after accepting a stream", func() {
|
||
|
|
var accepted bool
|
||
|
|
_, err := m.GetOrOpenStream(1)
|
||
|
|
Expect(err).ToNot(HaveOccurred())
|
||
|
|
str, err := m.AcceptStream()
|
||
|
|
Expect(err).ToNot(HaveOccurred())
|
||
|
|
Expect(str.StreamID()).To(Equal(protocol.StreamID(1)))
|
||
|
|
go func() {
|
||
|
|
defer GinkgoRecover()
|
||
|
|
_, _ = m.AcceptStream()
|
||
|
|
accepted = true
|
||
|
|
}()
|
||
|
|
Consistently(func() bool { return accepted }).Should(BeFalse())
|
||
|
|
})
|
||
|
|
|
||
|
|
It("stops waiting when an error is registered", func() {
|
||
|
|
testErr := errors.New("testErr")
|
||
|
|
var acceptErr error
|
||
|
|
go func() {
|
||
|
|
_, acceptErr = m.AcceptStream()
|
||
|
|
}()
|
||
|
|
Consistently(func() error { return acceptErr }).ShouldNot(HaveOccurred())
|
||
|
|
m.CloseWithError(testErr)
|
||
|
|
Eventually(func() error { return acceptErr }).Should(MatchError(testErr))
|
||
|
|
})
|
||
|
|
|
||
|
|
It("immediately returns when Accept is called after an error was registered", func() {
|
||
|
|
testErr := errors.New("testErr")
|
||
|
|
m.CloseWithError(testErr)
|
||
|
|
_, err := m.AcceptStream()
|
||
|
|
Expect(err).To(MatchError(testErr))
|
||
|
|
})
|
||
|
|
})
|
||
|
|
})
|
||
|
|
|
||
|
|
Context("as a client", func() {
|
||
|
|
BeforeEach(func() {
|
||
|
|
setNewStreamsMap(protocol.PerspectiveClient)
|
||
|
|
})
|
||
|
|
|
||
|
|
Context("client-side streams, as a client", func() {
|
||
|
|
It("rejects streams with odd IDs", func() {
|
||
|
|
_, err := m.GetOrOpenStream(5)
|
||
|
|
Expect(err).To(MatchError("InvalidStreamID: attempted to open stream 5 from server-side"))
|
||
|
|
})
|
||
|
|
|
||
|
|
It("gets new streams", func() {
|
||
|
|
s, err := m.GetOrOpenStream(2)
|
||
|
|
Expect(err).NotTo(HaveOccurred())
|
||
|
|
Expect(s.StreamID()).To(Equal(protocol.StreamID(2)))
|
||
|
|
Expect(m.numOutgoingStreams).To(BeEquivalentTo(1))
|
||
|
|
Expect(m.numIncomingStreams).To(BeZero())
|
||
|
|
})
|
||
|
|
|
||
|
|
It("opens skipped streams", func() {
|
||
|
|
_, err := m.GetOrOpenStream(6)
|
||
|
|
Expect(err).NotTo(HaveOccurred())
|
||
|
|
Expect(m.streams).To(HaveKey(protocol.StreamID(2)))
|
||
|
|
Expect(m.streams).To(HaveKey(protocol.StreamID(4)))
|
||
|
|
Expect(m.streams).To(HaveKey(protocol.StreamID(6)))
|
||
|
|
})
|
||
|
|
})
|
||
|
|
|
||
|
|
Context("server-side streams", func() {
|
||
|
|
It("opens stream 1 first", func() {
|
||
|
|
s, err := m.OpenStream()
|
||
|
|
Expect(err).ToNot(HaveOccurred())
|
||
|
|
Expect(s).ToNot(BeNil())
|
||
|
|
Expect(s.StreamID()).To(BeEquivalentTo(1))
|
||
|
|
Expect(m.numOutgoingStreams).To(BeZero())
|
||
|
|
Expect(m.numIncomingStreams).To(BeEquivalentTo(1))
|
||
|
|
})
|
||
|
|
|
||
|
|
It("opens multiple streams", func() {
|
||
|
|
s1, err := m.OpenStream()
|
||
|
|
Expect(err).ToNot(HaveOccurred())
|
||
|
|
s2, err := m.OpenStream()
|
||
|
|
Expect(err).ToNot(HaveOccurred())
|
||
|
|
Expect(s2.StreamID()).To(Equal(s1.StreamID() + 2))
|
||
|
|
})
|
||
|
|
})
|
||
|
|
|
||
|
|
Context("accepting streams", func() {
|
||
|
|
It("accepts stream 2 first", func() {
|
||
|
|
var str *stream
|
||
|
|
go func() {
|
||
|
|
defer GinkgoRecover()
|
||
|
|
var err error
|
||
|
|
str, err = m.AcceptStream()
|
||
|
|
Expect(err).ToNot(HaveOccurred())
|
||
|
|
}()
|
||
|
|
_, err := m.GetOrOpenStream(2)
|
||
|
|
Expect(err).ToNot(HaveOccurred())
|
||
|
|
Eventually(func() *stream { return str }).ShouldNot(BeNil())
|
||
|
|
Expect(str.StreamID()).To(Equal(protocol.StreamID(2)))
|
||
|
|
})
|
||
|
|
})
|
||
|
|
})
|
||
|
|
})
|
||
|
|
|
||
|
|
Context("DoS mitigation, iterating and deleting", func() {
|
||
|
|
BeforeEach(func() {
|
||
|
|
setNewStreamsMap(protocol.PerspectiveServer)
|
||
|
|
})
|
||
|
|
|
||
|
|
Context("deleting streams", func() {
|
||
|
|
BeforeEach(func() {
|
||
|
|
for i := 1; i <= 5; i++ {
|
||
|
|
err := m.putStream(&stream{streamID: protocol.StreamID(i)})
|
||
|
|
Expect(err).ToNot(HaveOccurred())
|
||
|
|
}
|
||
|
|
Expect(m.openStreams).To(Equal([]protocol.StreamID{1, 2, 3, 4, 5}))
|
||
|
|
})
|
||
|
|
|
||
|
|
It("errors when removing non-existing stream", func() {
|
||
|
|
err := m.RemoveStream(1337)
|
||
|
|
Expect(err).To(MatchError("attempted to remove non-existing stream: 1337"))
|
||
|
|
})
|
||
|
|
|
||
|
|
It("removes the first stream", func() {
|
||
|
|
err := m.RemoveStream(1)
|
||
|
|
Expect(err).ToNot(HaveOccurred())
|
||
|
|
Expect(m.openStreams).To(HaveLen(4))
|
||
|
|
Expect(m.openStreams).To(Equal([]protocol.StreamID{2, 3, 4, 5}))
|
||
|
|
})
|
||
|
|
|
||
|
|
It("removes a stream in the middle", func() {
|
||
|
|
err := m.RemoveStream(3)
|
||
|
|
Expect(err).ToNot(HaveOccurred())
|
||
|
|
Expect(m.openStreams).To(HaveLen(4))
|
||
|
|
Expect(m.openStreams).To(Equal([]protocol.StreamID{1, 2, 4, 5}))
|
||
|
|
})
|
||
|
|
|
||
|
|
It("removes a stream at the end", func() {
|
||
|
|
err := m.RemoveStream(5)
|
||
|
|
Expect(err).ToNot(HaveOccurred())
|
||
|
|
Expect(m.openStreams).To(HaveLen(4))
|
||
|
|
Expect(m.openStreams).To(Equal([]protocol.StreamID{1, 2, 3, 4}))
|
||
|
|
})
|
||
|
|
|
||
|
|
It("removes all streams", func() {
|
||
|
|
for i := 1; i <= 5; i++ {
|
||
|
|
err := m.RemoveStream(protocol.StreamID(i))
|
||
|
|
Expect(err).ToNot(HaveOccurred())
|
||
|
|
}
|
||
|
|
Expect(m.openStreams).To(BeEmpty())
|
||
|
|
})
|
||
|
|
})
|
||
|
|
|
||
|
|
Context("Iterate", func() {
|
||
|
|
// create 3 streams, ids 1 to 3
|
||
|
|
BeforeEach(func() {
|
||
|
|
for i := 1; i <= 3; i++ {
|
||
|
|
err := m.putStream(&stream{streamID: protocol.StreamID(i)})
|
||
|
|
Expect(err).NotTo(HaveOccurred())
|
||
|
|
}
|
||
|
|
})
|
||
|
|
|
||
|
|
It("executes the lambda exactly once for every stream", func() {
|
||
|
|
var numIterations int
|
||
|
|
callbackCalled := make(map[protocol.StreamID]bool)
|
||
|
|
fn := func(str *stream) (bool, error) {
|
||
|
|
callbackCalled[str.StreamID()] = true
|
||
|
|
numIterations++
|
||
|
|
return true, nil
|
||
|
|
}
|
||
|
|
err := m.Iterate(fn)
|
||
|
|
Expect(err).ToNot(HaveOccurred())
|
||
|
|
Expect(callbackCalled).To(HaveKey(protocol.StreamID(1)))
|
||
|
|
Expect(callbackCalled).To(HaveKey(protocol.StreamID(2)))
|
||
|
|
Expect(callbackCalled).To(HaveKey(protocol.StreamID(3)))
|
||
|
|
Expect(numIterations).To(Equal(3))
|
||
|
|
})
|
||
|
|
|
||
|
|
It("stops iterating when the callback returns false", func() {
|
||
|
|
var numIterations int
|
||
|
|
fn := func(str *stream) (bool, error) {
|
||
|
|
numIterations++
|
||
|
|
return false, nil
|
||
|
|
}
|
||
|
|
err := m.Iterate(fn)
|
||
|
|
Expect(err).ToNot(HaveOccurred())
|
||
|
|
// due to map access randomization, we don't know for which stream the callback was executed
|
||
|
|
// but it must only be executed once
|
||
|
|
Expect(numIterations).To(Equal(1))
|
||
|
|
})
|
||
|
|
|
||
|
|
It("returns the error, if the lambda returns one", func() {
|
||
|
|
var numIterations int
|
||
|
|
expectedError := errors.New("test")
|
||
|
|
fn := func(str *stream) (bool, error) {
|
||
|
|
numIterations++
|
||
|
|
return true, expectedError
|
||
|
|
}
|
||
|
|
err := m.Iterate(fn)
|
||
|
|
Expect(err).To(MatchError(expectedError))
|
||
|
|
Expect(numIterations).To(Equal(1))
|
||
|
|
})
|
||
|
|
})
|
||
|
|
|
||
|
|
Context("RoundRobinIterate", func() {
|
||
|
|
// create 5 streams, ids 4 to 8
|
||
|
|
var lambdaCalledForStream []protocol.StreamID
|
||
|
|
var numIterations int
|
||
|
|
|
||
|
|
BeforeEach(func() {
|
||
|
|
lambdaCalledForStream = lambdaCalledForStream[:0]
|
||
|
|
numIterations = 0
|
||
|
|
for i := 4; i <= 8; i++ {
|
||
|
|
err := m.putStream(&stream{streamID: protocol.StreamID(i)})
|
||
|
|
Expect(err).NotTo(HaveOccurred())
|
||
|
|
}
|
||
|
|
})
|
||
|
|
|
||
|
|
It("executes the lambda exactly once for every stream", func() {
|
||
|
|
fn := func(str *stream) (bool, error) {
|
||
|
|
lambdaCalledForStream = append(lambdaCalledForStream, str.StreamID())
|
||
|
|
numIterations++
|
||
|
|
return true, nil
|
||
|
|
}
|
||
|
|
err := m.RoundRobinIterate(fn)
|
||
|
|
Expect(err).ToNot(HaveOccurred())
|
||
|
|
Expect(numIterations).To(Equal(5))
|
||
|
|
Expect(lambdaCalledForStream).To(Equal([]protocol.StreamID{4, 5, 6, 7, 8}))
|
||
|
|
Expect(m.roundRobinIndex).To(BeZero())
|
||
|
|
})
|
||
|
|
|
||
|
|
It("goes around once when starting in the middle", func() {
|
||
|
|
fn := func(str *stream) (bool, error) {
|
||
|
|
lambdaCalledForStream = append(lambdaCalledForStream, str.StreamID())
|
||
|
|
numIterations++
|
||
|
|
return true, nil
|
||
|
|
}
|
||
|
|
m.roundRobinIndex = 3 // pointing to stream 7
|
||
|
|
err := m.RoundRobinIterate(fn)
|
||
|
|
Expect(err).ToNot(HaveOccurred())
|
||
|
|
Expect(numIterations).To(Equal(5))
|
||
|
|
Expect(lambdaCalledForStream).To(Equal([]protocol.StreamID{7, 8, 4, 5, 6}))
|
||
|
|
Expect(m.roundRobinIndex).To(Equal(uint32(3)))
|
||
|
|
})
|
||
|
|
|
||
|
|
It("picks up at the index+1 where it last stopped", func() {
|
||
|
|
fn := func(str *stream) (bool, error) {
|
||
|
|
lambdaCalledForStream = append(lambdaCalledForStream, str.StreamID())
|
||
|
|
numIterations++
|
||
|
|
if str.StreamID() == 5 {
|
||
|
|
return false, nil
|
||
|
|
}
|
||
|
|
return true, nil
|
||
|
|
}
|
||
|
|
err := m.RoundRobinIterate(fn)
|
||
|
|
Expect(err).ToNot(HaveOccurred())
|
||
|
|
Expect(numIterations).To(Equal(2))
|
||
|
|
Expect(lambdaCalledForStream).To(Equal([]protocol.StreamID{4, 5}))
|
||
|
|
Expect(m.roundRobinIndex).To(Equal(uint32(2)))
|
||
|
|
numIterations = 0
|
||
|
|
lambdaCalledForStream = lambdaCalledForStream[:0]
|
||
|
|
fn2 := func(str *stream) (bool, error) {
|
||
|
|
lambdaCalledForStream = append(lambdaCalledForStream, str.StreamID())
|
||
|
|
numIterations++
|
||
|
|
if str.StreamID() == 7 {
|
||
|
|
return false, nil
|
||
|
|
}
|
||
|
|
return true, nil
|
||
|
|
}
|
||
|
|
err = m.RoundRobinIterate(fn2)
|
||
|
|
Expect(err).ToNot(HaveOccurred())
|
||
|
|
Expect(numIterations).To(Equal(2))
|
||
|
|
Expect(lambdaCalledForStream).To(Equal([]protocol.StreamID{6, 7}))
|
||
|
|
})
|
||
|
|
|
||
|
|
It("adjust the RoundRobinIndex when deleting an element in front", func() {
|
||
|
|
m.roundRobinIndex = 3 // stream 7
|
||
|
|
m.RemoveStream(5)
|
||
|
|
Expect(m.roundRobinIndex).To(Equal(uint32(2)))
|
||
|
|
})
|
||
|
|
|
||
|
|
It("doesn't adjust the RoundRobinIndex when deleting an element at the back", func() {
|
||
|
|
m.roundRobinIndex = 1 // stream 5
|
||
|
|
m.RemoveStream(7)
|
||
|
|
Expect(m.roundRobinIndex).To(BeEquivalentTo(1))
|
||
|
|
})
|
||
|
|
|
||
|
|
It("doesn't adjust the RoundRobinIndex when deleting the element it is pointing to", func() {
|
||
|
|
m.roundRobinIndex = 3 // stream 7
|
||
|
|
m.RemoveStream(7)
|
||
|
|
Expect(m.roundRobinIndex).To(Equal(uint32(3)))
|
||
|
|
})
|
||
|
|
|
||
|
|
Context("Prioritizing crypto- and header streams", func() {
|
||
|
|
BeforeEach(func() {
|
||
|
|
err := m.putStream(&stream{streamID: 1})
|
||
|
|
Expect(err).NotTo(HaveOccurred())
|
||
|
|
err = m.putStream(&stream{streamID: 3})
|
||
|
|
Expect(err).NotTo(HaveOccurred())
|
||
|
|
})
|
||
|
|
|
||
|
|
It("gets crypto- and header stream first, then picks up at the round-robin position", func() {
|
||
|
|
m.roundRobinIndex = 3 // stream 7
|
||
|
|
fn := func(str *stream) (bool, error) {
|
||
|
|
if numIterations >= 3 {
|
||
|
|
return false, nil
|
||
|
|
}
|
||
|
|
lambdaCalledForStream = append(lambdaCalledForStream, str.StreamID())
|
||
|
|
numIterations++
|
||
|
|
return true, nil
|
||
|
|
}
|
||
|
|
err := m.RoundRobinIterate(fn)
|
||
|
|
Expect(err).ToNot(HaveOccurred())
|
||
|
|
Expect(numIterations).To(Equal(3))
|
||
|
|
Expect(lambdaCalledForStream).To(Equal([]protocol.StreamID{1, 3, 7}))
|
||
|
|
})
|
||
|
|
})
|
||
|
|
})
|
||
|
|
})
|
||
|
|
})
|