mirror of
https://github.com/refraction-networking/uquic.git
synced 2025-04-03 20:27:35 +03:00
759b0d87b1
This replaces version.UsesMaxDataFrame by versoin.UsesIETFFrameFormat. That way, we can have two separate code paths in the unpacker to unpack either gQUIC frames or IETF frames.
799 lines
25 KiB
Go
799 lines
25 KiB
Go
package quic
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import (
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"errors"
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"sort"
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"github.com/lucas-clemente/quic-go/internal/mocks"
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"github.com/lucas-clemente/quic-go/internal/protocol"
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"github.com/lucas-clemente/quic-go/qerr"
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"github.com/golang/mock/gomock"
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. "github.com/onsi/ginkgo"
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. "github.com/onsi/gomega"
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)
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var _ = Describe("Streams Map", func() {
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var (
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m *streamsMap
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finishedStreams map[protocol.StreamID]*gomock.Call
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)
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newStream := func(id protocol.StreamID) streamI {
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str := mocks.NewMockStreamI(mockCtrl)
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str.EXPECT().StreamID().Return(id).AnyTimes()
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c := str.EXPECT().Finished().Return(false).AnyTimes()
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finishedStreams[id] = c
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return str
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}
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setNewStreamsMap := func(p protocol.Perspective, v protocol.VersionNumber) {
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m = newStreamsMap(newStream, p, v)
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}
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BeforeEach(func() {
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finishedStreams = make(map[protocol.StreamID]*gomock.Call)
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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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deleteStream := func(id protocol.StreamID) {
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str := m.streams[id]
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Expect(str).ToNot(BeNil())
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finishedStreams[id].Return(true)
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err := m.DeleteClosedStreams()
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Expect(err).ToNot(HaveOccurred())
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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, versionGQUICFrames)
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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: peer attempted to open stream 6"))
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})
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It("rejects streams with even IDs, which are lower thatn the highest client-side stream", func() {
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_, err := m.GetOrOpenStream(5)
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Expect(err).NotTo(HaveOccurred())
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_, err = m.GetOrOpenStream(4)
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Expect(err).To(MatchError("InvalidStreamID: peer attempted to open stream 4"))
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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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_, err := m.GetOrOpenStream(5)
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Expect(err).NotTo(HaveOccurred())
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deleteStream(5)
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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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deleteStream(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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It("errors when too many streams are opened", func() {
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for i := uint32(0); i < m.maxIncomingStreams; 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*m.maxIncomingStreams + 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(m.maxIncomingStreams*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 := uint32(2); i < 10*m.maxIncomingStreams; i++ {
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str, err := m.GetOrOpenStream(protocol.StreamID(i*2 + 1))
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Expect(err).NotTo(HaveOccurred())
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deleteStream(str.StreamID())
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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("doesn't allow opening streams before receiving the transport parameters", func() {
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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("opens a stream 2 first", func() {
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m.UpdateMaxStreamLimit(100)
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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("returns the error when the streamsMap was closed", func() {
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testErr := errors.New("test error")
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m.CloseWithError(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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It("doesn't reopen an already closed stream", func() {
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m.UpdateMaxStreamLimit(100)
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str, err := m.OpenStream()
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Expect(err).ToNot(HaveOccurred())
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Expect(str.StreamID()).To(Equal(protocol.StreamID(2)))
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deleteStream(2)
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Expect(err).ToNot(HaveOccurred())
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str, err = m.GetOrOpenStream(2)
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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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const maxOutgoingStreams = 50
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BeforeEach(func() {
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m.UpdateMaxStreamLimit(maxOutgoingStreams)
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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 <= maxOutgoingStreams; 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*maxOutgoingStreams; i++ {
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str, err := m.OpenStream()
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Expect(err).NotTo(HaveOccurred())
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deleteStream(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 < maxOutgoingStreams; 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 < maxOutgoingStreams; 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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const maxOutgoingStreams = 10
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BeforeEach(func() {
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m.UpdateMaxStreamLimit(maxOutgoingStreams)
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})
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openMaxNumStreams := func() {
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for i := 1; i <= maxOutgoingStreams; 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 streamI
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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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deleteStream(6)
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Eventually(func() bool { return returned }).Should(BeTrue())
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Expect(str.StreamID()).To(Equal(protocol.StreamID(2*maxOutgoingStreams + 2)))
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})
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It("stops waiting when an error is registered", func() {
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testErr := errors.New("test error")
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openMaxNumStreams()
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for _, str := range m.streams {
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str.(*mocks.MockStreamI).EXPECT().Cancel(testErr)
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}
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done := make(chan struct{})
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go func() {
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defer GinkgoRecover()
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_, err := m.OpenStreamSync()
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Expect(err).To(MatchError(testErr))
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close(done)
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}()
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Consistently(done).ShouldNot(BeClosed())
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m.CloseWithError(testErr)
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Eventually(done).Should(BeClosed())
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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("starts with stream 1, if the crypto stream is stream 0", func() {
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setNewStreamsMap(protocol.PerspectiveServer, versionIETFFrames)
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var str streamI
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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("starts with stream 3, if the crypto stream is stream 1", func() {
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var str streamI
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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(3)
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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(3)))
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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 streamI
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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(3)))
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})
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It("returns to multiple accepts", func() {
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var str1, str2 streamI
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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(5) // opens stream 3 and 5
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Expect(err).ToNot(HaveOccurred())
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Eventually(func() streamI { return str1 }).ShouldNot(BeNil())
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Eventually(func() streamI { 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(3 + 5))
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})
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It("waits a new stream is available", func() {
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var str streamI
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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() streamI { return str }).Should(BeNil())
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_, err := m.GetOrOpenStream(3)
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Expect(err).ToNot(HaveOccurred())
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Eventually(func() streamI { return str }).ShouldNot(BeNil())
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Expect(str.StreamID()).To(Equal(protocol.StreamID(3)))
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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 streamI
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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() streamI { return str }).ShouldNot(BeNil())
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Expect(str.StreamID()).To(Equal(protocol.StreamID(3)))
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str, err = m.AcceptStream()
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Expect(err).ToNot(HaveOccurred())
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Expect(str.StreamID()).To(Equal(protocol.StreamID(5)))
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})
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It("blocks after accepting a stream", func() {
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var accepted bool
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_, err := m.GetOrOpenStream(3)
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Expect(err).ToNot(HaveOccurred())
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str, err := m.AcceptStream()
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Expect(err).ToNot(HaveOccurred())
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Expect(str.StreamID()).To(Equal(protocol.StreamID(3)))
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go func() {
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defer GinkgoRecover()
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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("stops waiting when an error is registered", func() {
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testErr := errors.New("testErr")
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var acceptErr error
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go func() {
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_, acceptErr = m.AcceptStream()
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}()
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Consistently(func() error { return acceptErr }).ShouldNot(HaveOccurred())
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m.CloseWithError(testErr)
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Eventually(func() error { return acceptErr }).Should(MatchError(testErr))
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})
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It("immediately returns when Accept is called after an error was registered", func() {
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testErr := errors.New("testErr")
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m.CloseWithError(testErr)
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_, err := m.AcceptStream()
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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("as a client", func() {
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BeforeEach(func() {
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setNewStreamsMap(protocol.PerspectiveClient, versionGQUICFrames)
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m.UpdateMaxStreamLimit(100)
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})
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Context("server-side streams", func() {
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It("rejects streams with odd IDs", func() {
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_, err := m.GetOrOpenStream(5)
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Expect(err).To(MatchError("InvalidStreamID: peer attempted to open stream 5"))
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})
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It("rejects streams with odds IDs, which are lower thatn the highest server-side stream", func() {
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_, err := m.GetOrOpenStream(6)
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Expect(err).NotTo(HaveOccurred())
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_, err = m.GetOrOpenStream(5)
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Expect(err).To(MatchError("InvalidStreamID: peer attempted to open stream 5"))
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})
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It("gets new streams", func() {
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s, err := m.GetOrOpenStream(2)
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Expect(err).NotTo(HaveOccurred())
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Expect(s.StreamID()).To(Equal(protocol.StreamID(2)))
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Expect(m.numOutgoingStreams).To(BeZero())
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Expect(m.numIncomingStreams).To(BeEquivalentTo(1))
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})
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It("opens skipped streams", func() {
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_, err := m.GetOrOpenStream(6)
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Expect(err).NotTo(HaveOccurred())
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Expect(m.streams).To(HaveKey(protocol.StreamID(2)))
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Expect(m.streams).To(HaveKey(protocol.StreamID(4)))
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Expect(m.streams).To(HaveKey(protocol.StreamID(6)))
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Expect(m.numOutgoingStreams).To(BeZero())
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Expect(m.numIncomingStreams).To(BeEquivalentTo(3))
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})
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It("doesn't reopen an already closed stream", func() {
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str, err := m.OpenStream()
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Expect(err).ToNot(HaveOccurred())
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Expect(str.StreamID()).To(Equal(protocol.StreamID(3)))
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deleteStream(3)
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Expect(err).ToNot(HaveOccurred())
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str, err = m.GetOrOpenStream(3)
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Expect(err).ToNot(HaveOccurred())
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Expect(str).To(BeNil())
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})
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})
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Context("client-side streams", func() {
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It("starts with stream 1, if the crypto stream is stream 0", func() {
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setNewStreamsMap(protocol.PerspectiveClient, versionIETFFrames)
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m.UpdateMaxStreamLimit(100)
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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(BeEquivalentTo(1))
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Expect(m.numOutgoingStreams).To(BeEquivalentTo(1))
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Expect(m.numIncomingStreams).To(BeZero())
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})
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It("starts with stream 3, if the crypto stream is stream 1", 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(BeEquivalentTo(3))
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Expect(m.numOutgoingStreams).To(BeEquivalentTo(1))
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Expect(m.numIncomingStreams).To(BeZero())
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})
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It("opens multiple streams", func() {
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s1, err := m.OpenStream()
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Expect(err).ToNot(HaveOccurred())
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s2, err := m.OpenStream()
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Expect(err).ToNot(HaveOccurred())
|
|
Expect(s2.StreamID()).To(Equal(s1.StreamID() + 2))
|
|
})
|
|
|
|
It("doesn't reopen an already closed stream", func() {
|
|
_, err := m.GetOrOpenStream(4)
|
|
Expect(err).ToNot(HaveOccurred())
|
|
deleteStream(4)
|
|
Expect(err).ToNot(HaveOccurred())
|
|
str, err := m.GetOrOpenStream(4)
|
|
Expect(err).ToNot(HaveOccurred())
|
|
Expect(str).To(BeNil())
|
|
})
|
|
})
|
|
|
|
Context("accepting streams", func() {
|
|
It("accepts stream 2 first", func() {
|
|
var str streamI
|
|
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() streamI { return str }).ShouldNot(BeNil())
|
|
Expect(str.StreamID()).To(Equal(protocol.StreamID(2)))
|
|
})
|
|
})
|
|
})
|
|
})
|
|
|
|
Context("DoS mitigation, iterating and deleting", func() {
|
|
BeforeEach(func() {
|
|
setNewStreamsMap(protocol.PerspectiveServer, versionGQUICFrames)
|
|
})
|
|
|
|
closeStream := func(id protocol.StreamID) {
|
|
str := m.streams[id]
|
|
ExpectWithOffset(1, str).ToNot(BeNil())
|
|
finishedStreams[id].Return(true)
|
|
}
|
|
|
|
Context("deleting streams", func() {
|
|
Context("as a server", func() {
|
|
BeforeEach(func() {
|
|
m.UpdateMaxStreamLimit(100)
|
|
for i := 1; i <= 5; i++ {
|
|
if i%2 == 1 {
|
|
_, err := m.openRemoteStream(protocol.StreamID(i))
|
|
Expect(err).ToNot(HaveOccurred())
|
|
} else {
|
|
_, err := m.OpenStream()
|
|
Expect(err).ToNot(HaveOccurred())
|
|
}
|
|
}
|
|
Expect(m.openStreams).To(Equal([]protocol.StreamID{1, 2, 3, 4, 5}))
|
|
Expect(m.numOutgoingStreams).To(BeEquivalentTo(2)) // 2 and 4
|
|
Expect(m.numIncomingStreams).To(BeEquivalentTo(3)) // 1, 3 and 5
|
|
})
|
|
|
|
It("does not delete streams with Close()", func() {
|
|
str, err := m.GetOrOpenStream(55)
|
|
Expect(err).ToNot(HaveOccurred())
|
|
str.(*mocks.MockStreamI).EXPECT().Close()
|
|
str.Close()
|
|
err = m.DeleteClosedStreams()
|
|
Expect(err).ToNot(HaveOccurred())
|
|
str, err = m.GetOrOpenStream(55)
|
|
Expect(err).ToNot(HaveOccurred())
|
|
Expect(str).ToNot(BeNil())
|
|
})
|
|
|
|
It("removes the first stream", func() {
|
|
closeStream(1)
|
|
err := m.DeleteClosedStreams()
|
|
Expect(err).ToNot(HaveOccurred())
|
|
Expect(m.openStreams).To(HaveLen(4))
|
|
Expect(m.openStreams).To(Equal([]protocol.StreamID{2, 3, 4, 5}))
|
|
Expect(m.numOutgoingStreams).To(BeEquivalentTo(2))
|
|
Expect(m.numIncomingStreams).To(BeEquivalentTo(2))
|
|
})
|
|
|
|
It("removes a stream in the middle", func() {
|
|
closeStream(3)
|
|
err := m.DeleteClosedStreams()
|
|
Expect(err).ToNot(HaveOccurred())
|
|
Expect(m.streams).To(HaveLen(4))
|
|
Expect(m.openStreams).To(Equal([]protocol.StreamID{1, 2, 4, 5}))
|
|
Expect(m.numOutgoingStreams).To(BeEquivalentTo(2))
|
|
Expect(m.numIncomingStreams).To(BeEquivalentTo(2))
|
|
})
|
|
|
|
It("removes a client-initiated stream", func() {
|
|
closeStream(2)
|
|
err := m.DeleteClosedStreams()
|
|
Expect(err).ToNot(HaveOccurred())
|
|
Expect(m.streams).To(HaveLen(4))
|
|
Expect(m.openStreams).To(Equal([]protocol.StreamID{1, 3, 4, 5}))
|
|
Expect(m.numOutgoingStreams).To(BeEquivalentTo(1))
|
|
Expect(m.numIncomingStreams).To(BeEquivalentTo(3))
|
|
})
|
|
|
|
It("removes a stream at the end", func() {
|
|
closeStream(5)
|
|
err := m.DeleteClosedStreams()
|
|
Expect(err).ToNot(HaveOccurred())
|
|
Expect(m.openStreams).To(HaveLen(4))
|
|
Expect(m.openStreams).To(Equal([]protocol.StreamID{1, 2, 3, 4}))
|
|
Expect(m.numOutgoingStreams).To(BeEquivalentTo(2))
|
|
Expect(m.numIncomingStreams).To(BeEquivalentTo(2))
|
|
})
|
|
|
|
It("removes all streams", func() {
|
|
for i := 1; i <= 5; i++ {
|
|
closeStream(protocol.StreamID(i))
|
|
}
|
|
err := m.DeleteClosedStreams()
|
|
Expect(err).ToNot(HaveOccurred())
|
|
Expect(m.streams).To(BeEmpty())
|
|
Expect(m.openStreams).To(BeEmpty())
|
|
Expect(m.numOutgoingStreams).To(BeZero())
|
|
Expect(m.numIncomingStreams).To(BeZero())
|
|
})
|
|
})
|
|
|
|
Context("as a client", func() {
|
|
BeforeEach(func() {
|
|
setNewStreamsMap(protocol.PerspectiveClient, versionGQUICFrames)
|
|
m.UpdateMaxStreamLimit(100)
|
|
for i := 1; i <= 5; i++ {
|
|
if i%2 == 0 {
|
|
_, err := m.openRemoteStream(protocol.StreamID(i))
|
|
Expect(err).ToNot(HaveOccurred())
|
|
} else {
|
|
_, err := m.OpenStream()
|
|
Expect(err).ToNot(HaveOccurred())
|
|
}
|
|
}
|
|
Expect(m.openStreams).To(Equal([]protocol.StreamID{3, 2, 5, 4, 7}))
|
|
Expect(m.numOutgoingStreams).To(BeEquivalentTo(3)) // 3, 5 and 7
|
|
Expect(m.numIncomingStreams).To(BeEquivalentTo(2)) // 2 and 4
|
|
})
|
|
|
|
It("removes a stream that we initiated", func() {
|
|
closeStream(3)
|
|
err := m.DeleteClosedStreams()
|
|
Expect(err).ToNot(HaveOccurred())
|
|
Expect(m.streams).To(HaveLen(4))
|
|
Expect(m.openStreams).To(Equal([]protocol.StreamID{2, 5, 4, 7}))
|
|
Expect(m.numOutgoingStreams).To(BeEquivalentTo(2))
|
|
Expect(m.numIncomingStreams).To(BeEquivalentTo(2))
|
|
})
|
|
|
|
It("removes a stream that the server initiated", func() {
|
|
closeStream(2)
|
|
err := m.DeleteClosedStreams()
|
|
Expect(err).ToNot(HaveOccurred())
|
|
Expect(m.openStreams).To(HaveLen(4))
|
|
Expect(m.openStreams).To(Equal([]protocol.StreamID{3, 5, 4, 7}))
|
|
Expect(m.numOutgoingStreams).To(BeEquivalentTo(3))
|
|
Expect(m.numIncomingStreams).To(BeEquivalentTo(1))
|
|
})
|
|
|
|
It("removes all streams", func() {
|
|
closeStream(3)
|
|
closeStream(2)
|
|
closeStream(5)
|
|
closeStream(4)
|
|
closeStream(7)
|
|
err := m.DeleteClosedStreams()
|
|
Expect(err).ToNot(HaveOccurred())
|
|
Expect(m.streams).To(BeEmpty())
|
|
Expect(m.openStreams).To(BeEmpty())
|
|
Expect(m.numOutgoingStreams).To(BeZero())
|
|
Expect(m.numIncomingStreams).To(BeZero())
|
|
})
|
|
})
|
|
})
|
|
|
|
Context("Ranging", func() {
|
|
// create 5 streams, ids 4 to 8
|
|
var callbackCalledForStream []protocol.StreamID
|
|
callback := func(str streamI) {
|
|
callbackCalledForStream = append(callbackCalledForStream, str.StreamID())
|
|
sort.Slice(callbackCalledForStream, func(i, j int) bool { return callbackCalledForStream[i] < callbackCalledForStream[j] })
|
|
}
|
|
|
|
BeforeEach(func() {
|
|
callbackCalledForStream = callbackCalledForStream[:0]
|
|
for i := 4; i <= 8; i++ {
|
|
err := m.putStream(&stream{streamID: protocol.StreamID(i)})
|
|
Expect(err).NotTo(HaveOccurred())
|
|
}
|
|
})
|
|
|
|
It("ranges over all open streams", func() {
|
|
m.Range(callback)
|
|
Expect(callbackCalledForStream).To(Equal([]protocol.StreamID{4, 5, 6, 7, 8}))
|
|
})
|
|
})
|
|
|
|
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(newStream(protocol.StreamID(i)))
|
|
Expect(err).NotTo(HaveOccurred())
|
|
}
|
|
})
|
|
|
|
It("executes the lambda exactly once for every stream", func() {
|
|
fn := func(str streamI) (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 streamI) (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(BeEquivalentTo(3))
|
|
})
|
|
|
|
It("picks up at the index+1 where it last stopped", func() {
|
|
fn := func(str streamI) (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(BeEquivalentTo(2))
|
|
numIterations = 0
|
|
lambdaCalledForStream = lambdaCalledForStream[:0]
|
|
fn2 := func(str streamI) (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}))
|
|
})
|
|
|
|
Context("adjusting the RoundRobinIndex when deleting streams", func() {
|
|
/*
|
|
Index: 0 1 2 3 4
|
|
StreamID: [ 4, 5, 6, 7, 8 ]
|
|
*/
|
|
|
|
It("adjusts when deleting an element in front", func() {
|
|
m.roundRobinIndex = 3 // stream 7
|
|
deleteStream(5)
|
|
Expect(m.roundRobinIndex).To(BeEquivalentTo(2))
|
|
})
|
|
|
|
It("doesn't adjust when deleting an element at the back", func() {
|
|
m.roundRobinIndex = 1 // stream 5
|
|
deleteStream(7)
|
|
Expect(m.roundRobinIndex).To(BeEquivalentTo(1))
|
|
})
|
|
|
|
It("doesn't adjust when deleting the element it is pointing to", func() {
|
|
m.roundRobinIndex = 3 // stream 7
|
|
deleteStream(7)
|
|
Expect(m.roundRobinIndex).To(BeEquivalentTo(3))
|
|
})
|
|
|
|
It("adjusts when deleting multiple elements", func() {
|
|
m.roundRobinIndex = 3 // stream 7
|
|
closeStream(5)
|
|
closeStream(6)
|
|
closeStream(8)
|
|
err := m.DeleteClosedStreams()
|
|
Expect(err).ToNot(HaveOccurred())
|
|
Expect(m.roundRobinIndex).To(BeEquivalentTo(1))
|
|
})
|
|
})
|
|
})
|
|
})
|
|
})
|