forked from quic-go/quic-go
f12ee48617
* wire: add benchmarks for the frame parser * wire: use quicvarint.Parse when parsing frames * wire: always use io.EOF for too short frames
111 lines
3.6 KiB
Go
111 lines
3.6 KiB
Go
package wire
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import (
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"fmt"
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"io"
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"github.com/quic-go/quic-go/internal/protocol"
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"github.com/quic-go/quic-go/quicvarint"
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. "github.com/onsi/ginkgo/v2"
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. "github.com/onsi/gomega"
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)
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var _ = Describe("STREAMS_BLOCKED frame", func() {
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Context("parsing", func() {
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It("accepts a frame for bidirectional streams", func() {
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data := encodeVarInt(0x1337)
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f, l, err := parseStreamsBlockedFrame(data, bidiStreamBlockedFrameType, protocol.Version1)
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Expect(err).ToNot(HaveOccurred())
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Expect(f.Type).To(Equal(protocol.StreamTypeBidi))
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Expect(f.StreamLimit).To(BeEquivalentTo(0x1337))
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Expect(l).To(Equal(len(data)))
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})
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It("accepts a frame for unidirectional streams", func() {
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data := encodeVarInt(0x7331)
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f, l, err := parseStreamsBlockedFrame(data, uniStreamBlockedFrameType, protocol.Version1)
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Expect(err).ToNot(HaveOccurred())
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Expect(f.Type).To(Equal(protocol.StreamTypeUni))
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Expect(f.StreamLimit).To(BeEquivalentTo(0x7331))
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Expect(l).To(Equal(len(data)))
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})
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It("errors on EOFs", func() {
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data := encodeVarInt(0x12345678)
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_, l, err := parseStreamsBlockedFrame(data, bidiStreamBlockedFrameType, protocol.Version1)
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Expect(err).ToNot(HaveOccurred())
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Expect(l).To(Equal(len(data)))
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for i := range data {
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_, _, err := parseStreamsBlockedFrame(data[:i], bidiStreamBlockedFrameType, protocol.Version1)
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Expect(err).To(MatchError(io.EOF))
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}
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})
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for _, t := range []protocol.StreamType{protocol.StreamTypeUni, protocol.StreamTypeBidi} {
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streamType := t
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It("accepts a frame containing the maximum stream count", func() {
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f := &StreamsBlockedFrame{
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Type: streamType,
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StreamLimit: protocol.MaxStreamCount,
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}
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b, err := f.Append(nil, protocol.Version1)
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Expect(err).ToNot(HaveOccurred())
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typ, l, err := quicvarint.Parse(b)
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Expect(err).ToNot(HaveOccurred())
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b = b[l:]
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frame, l, err := parseStreamsBlockedFrame(b, typ, protocol.Version1)
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Expect(err).ToNot(HaveOccurred())
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Expect(frame).To(Equal(f))
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Expect(l).To(Equal(len(b)))
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})
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It("errors when receiving a too large stream count", func() {
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f := &StreamsBlockedFrame{
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Type: streamType,
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StreamLimit: protocol.MaxStreamCount + 1,
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}
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b, err := f.Append(nil, protocol.Version1)
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Expect(err).ToNot(HaveOccurred())
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typ, l, err := quicvarint.Parse(b)
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Expect(err).ToNot(HaveOccurred())
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b = b[l:]
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_, _, err = parseStreamsBlockedFrame(b, typ, protocol.Version1)
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Expect(err).To(MatchError(fmt.Sprintf("%d exceeds the maximum stream count", protocol.MaxStreamCount+1)))
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})
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}
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})
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Context("writing", func() {
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It("writes a frame for bidirectional streams", func() {
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f := StreamsBlockedFrame{
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Type: protocol.StreamTypeBidi,
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StreamLimit: 0xdeadbeefcafe,
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}
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b, err := f.Append(nil, protocol.Version1)
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Expect(err).ToNot(HaveOccurred())
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expected := []byte{bidiStreamBlockedFrameType}
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expected = append(expected, encodeVarInt(0xdeadbeefcafe)...)
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Expect(b).To(Equal(expected))
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})
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It("writes a frame for unidirectional streams", func() {
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f := StreamsBlockedFrame{
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Type: protocol.StreamTypeUni,
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StreamLimit: 0xdeadbeefcafe,
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}
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b, err := f.Append(nil, protocol.Version1)
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Expect(err).ToNot(HaveOccurred())
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expected := []byte{uniStreamBlockedFrameType}
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expected = append(expected, encodeVarInt(0xdeadbeefcafe)...)
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Expect(b).To(Equal(expected))
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})
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It("has the correct min length", func() {
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frame := StreamsBlockedFrame{StreamLimit: 0x123456}
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Expect(frame.Length(0)).To(Equal(1 + protocol.ByteCount(quicvarint.Len(0x123456))))
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})
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})
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})
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