mirror of
https://github.com/refraction-networking/uquic.git
synced 2025-04-04 20:57:36 +03:00
508 lines
21 KiB
Go
508 lines
21 KiB
Go
package wire
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import (
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"bytes"
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"encoding/binary"
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"io"
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"github.com/lucas-clemente/quic-go/internal/protocol"
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"github.com/lucas-clemente/quic-go/internal/utils"
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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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var _ = Describe("Header Parsing", func() {
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Context("IETF QUIC Header", func() {
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appendPacketNumber := func(data []byte, pn protocol.PacketNumber, pnLen protocol.PacketNumberLen) []byte {
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buf := &bytes.Buffer{}
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utils.WriteVarIntPacketNumber(buf, pn, pnLen)
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return append(data, buf.Bytes()...)
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}
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Context("Version Negotiation Packets", func() {
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It("parses", func() {
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srcConnID := protocol.ConnectionID{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12}
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destConnID := protocol.ConnectionID{9, 8, 7, 6, 5, 4, 3, 2, 1}
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versions := []protocol.VersionNumber{0x22334455, 0x33445566}
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data, err := ComposeVersionNegotiation(destConnID, srcConnID, versions)
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Expect(err).ToNot(HaveOccurred())
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b := bytes.NewReader(data)
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iHdr, err := ParseInvariantHeader(b, 0)
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Expect(err).ToNot(HaveOccurred())
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Expect(iHdr.DestConnectionID).To(Equal(destConnID))
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Expect(iHdr.SrcConnectionID).To(Equal(srcConnID))
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Expect(iHdr.IsLongHeader).To(BeTrue())
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hdr, err := iHdr.Parse(b, protocol.PerspectiveServer, versionIETFFrames)
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Expect(err).ToNot(HaveOccurred())
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Expect(hdr.IsVersionNegotiation).To(BeTrue())
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Expect(hdr.Version).To(BeZero())
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Expect(hdr.DestConnectionID).To(Equal(destConnID))
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Expect(hdr.SrcConnectionID).To(Equal(srcConnID))
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for _, v := range versions {
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Expect(hdr.SupportedVersions).To(ContainElement(v))
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}
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})
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It("errors if it contains versions of the wrong length", func() {
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connID := protocol.ConnectionID{1, 2, 3, 4, 5, 6, 7, 8}
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versions := []protocol.VersionNumber{0x22334455, 0x33445566}
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data, err := ComposeVersionNegotiation(connID, connID, versions)
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Expect(err).ToNot(HaveOccurred())
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b := bytes.NewReader(data[:len(data)-2])
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iHdr, err := ParseInvariantHeader(b, 0)
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Expect(err).ToNot(HaveOccurred())
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_, err = iHdr.Parse(b, protocol.PerspectiveServer, versionIETFFrames)
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Expect(err).To(MatchError(qerr.InvalidVersionNegotiationPacket))
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})
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It("errors if the version list is empty", func() {
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connID := protocol.ConnectionID{1, 2, 3, 4, 5, 6, 7, 8}
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versions := []protocol.VersionNumber{0x22334455}
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data, err := ComposeVersionNegotiation(connID, connID, versions)
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Expect(err).ToNot(HaveOccurred())
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// remove 8 bytes (two versions), since ComposeVersionNegotiation also added a reserved version number
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b := bytes.NewReader(data[:len(data)-8])
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iHdr, err := ParseInvariantHeader(b, 0)
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Expect(err).ToNot(HaveOccurred())
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_, err = iHdr.Parse(b, protocol.PerspectiveServer, versionIETFFrames)
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Expect(err).To(MatchError("InvalidVersionNegotiationPacket: empty version list"))
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})
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})
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Context("Long Headers", func() {
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It("parses a Long Header", func() {
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destConnID := protocol.ConnectionID{9, 8, 7, 6, 5, 4, 3, 2, 1}
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srcConnID := protocol.ConnectionID{0xde, 0xad, 0xbe, 0xef}
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data := []byte{
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0x80 ^ uint8(protocol.PacketTypeInitial),
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0x1, 0x2, 0x3, 0x4, // version number
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0x61, // connection ID lengths
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}
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data = append(data, destConnID...)
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data = append(data, srcConnID...)
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data = append(data, encodeVarInt(0x1337)...) // payload length
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// packet number
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data = appendPacketNumber(data, 0xbeef, protocol.PacketNumberLen4)
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b := bytes.NewReader(data)
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iHdr, err := ParseInvariantHeader(b, 0)
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Expect(err).ToNot(HaveOccurred())
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Expect(iHdr.IsLongHeader).To(BeTrue())
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Expect(iHdr.DestConnectionID).To(Equal(destConnID))
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Expect(iHdr.SrcConnectionID).To(Equal(srcConnID))
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hdr, err := iHdr.Parse(b, protocol.PerspectiveServer, versionIETFHeader)
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Expect(err).ToNot(HaveOccurred())
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Expect(hdr.Type).To(Equal(protocol.PacketTypeInitial))
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Expect(hdr.IsLongHeader).To(BeTrue())
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Expect(hdr.DestConnectionID).To(Equal(destConnID))
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Expect(hdr.SrcConnectionID).To(Equal(srcConnID))
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Expect(hdr.PayloadLen).To(Equal(protocol.ByteCount(0x1337)))
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Expect(hdr.PacketNumber).To(Equal(protocol.PacketNumber(0xbeef)))
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Expect(hdr.PacketNumberLen).To(Equal(protocol.PacketNumberLen4))
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Expect(hdr.Version).To(Equal(protocol.VersionNumber(0x1020304)))
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Expect(hdr.IsVersionNegotiation).To(BeFalse())
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Expect(b.Len()).To(BeZero())
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})
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It("parses a Long Header without a destination connection ID", func() {
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data := []byte{
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0x80 ^ uint8(protocol.PacketTypeInitial),
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0x1, 0x2, 0x3, 0x4, // version number
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0x01, // connection ID lengths
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0xde, 0xad, 0xbe, 0xef, // source connection ID
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}
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data = append(data, encodeVarInt(0x42)...) // payload length
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data = append(data, []byte{0xde, 0xca, 0xfb, 0xad}...)
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b := bytes.NewReader(data)
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iHdr, err := ParseInvariantHeader(b, 0)
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Expect(err).ToNot(HaveOccurred())
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Expect(iHdr.SrcConnectionID).To(Equal(protocol.ConnectionID{0xde, 0xad, 0xbe, 0xef}))
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Expect(iHdr.DestConnectionID).To(BeEmpty())
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})
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It("parses a Long Header without a source connection ID", func() {
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data := []byte{
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0x80 ^ uint8(protocol.PacketTypeInitial),
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0x1, 0x2, 0x3, 0x4, // version number
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0x70, // connection ID lengths
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1, 2, 3, 4, 5, 6, 7, 8, 9, 10, // source connection ID
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}
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data = append(data, encodeVarInt(0x42)...) // payload length
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data = append(data, []byte{0xde, 0xca, 0xfb, 0xad}...)
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b := bytes.NewReader(data)
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iHdr, err := ParseInvariantHeader(b, 0)
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Expect(err).ToNot(HaveOccurred())
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Expect(iHdr.SrcConnectionID).To(BeEmpty())
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Expect(iHdr.DestConnectionID).To(Equal(protocol.ConnectionID{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}))
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})
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It("parses a Long Header with a 2 byte packet number", func() {
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data := []byte{
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0x80 ^ uint8(protocol.PacketTypeInitial),
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0x1, 0x2, 0x3, 0x4, // version number
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0x0, // connection ID lengths
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}
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data = append(data, encodeVarInt(0x42)...) // payload length
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data = appendPacketNumber(data, 0x123, protocol.PacketNumberLen2)
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b := bytes.NewReader(data)
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iHdr, err := ParseInvariantHeader(b, 0)
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Expect(err).ToNot(HaveOccurred())
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hdr, err := iHdr.Parse(b, protocol.PerspectiveServer, versionIETFHeader)
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Expect(err).ToNot(HaveOccurred())
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Expect(hdr.PacketNumber).To(Equal(protocol.PacketNumber(0x123)))
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Expect(hdr.PacketNumberLen).To(Equal(protocol.PacketNumberLen2))
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})
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It("rejects packets sent with an unknown packet type", func() {
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srcConnID := protocol.ConnectionID{1, 2, 3, 4, 5, 6, 7, 8}
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buf := &bytes.Buffer{}
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err := (&Header{
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IsLongHeader: true,
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Type: 42,
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SrcConnectionID: srcConnID,
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Version: 0x10203040,
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PacketNumber: 1,
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PacketNumberLen: protocol.PacketNumberLen1,
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}).Write(buf, protocol.PerspectiveClient, protocol.VersionTLS)
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Expect(err).ToNot(HaveOccurred())
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b := bytes.NewReader(buf.Bytes())
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iHdr, err := ParseInvariantHeader(b, 0)
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Expect(err).ToNot(HaveOccurred())
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_, err = iHdr.Parse(b, protocol.PerspectiveClient, versionIETFHeader)
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Expect(err).To(MatchError("InvalidPacketHeader: Received packet with invalid packet type: 42"))
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})
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It("errors on EOF, when parsing the invariant header", func() {
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data := []byte{
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0x80 ^ uint8(protocol.PacketTypeInitial),
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0x1, 0x2, 0x3, 0x4, // version number
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0x55, // connection ID lengths
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0xde, 0xad, 0xbe, 0xef, 0xca, 0xfe, 0x13, 0x37, // destination connection ID
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0xde, 0xad, 0xbe, 0xef, 0xca, 0xfe, 0x13, 0x37, // source connection ID
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}
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for i := 0; i < len(data); i++ {
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_, err := ParseInvariantHeader(bytes.NewReader(data[:i]), 0)
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Expect(err).To(Equal(io.EOF))
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}
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})
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It("errors on EOF, when parsing the header", func() {
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data := []byte{
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0x80 ^ uint8(protocol.PacketTypeInitial),
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0x1, 0x2, 0x3, 0x4, // version number
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0x0, // connection ID lengths
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}
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iHdrLen := len(data)
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data = append(data, encodeVarInt(0x1337)...)
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data = appendPacketNumber(data, 0xdeadbeef, protocol.PacketNumberLen4)
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for i := iHdrLen; i < len(data); i++ {
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b := bytes.NewReader(data[:i])
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iHdr, err := ParseInvariantHeader(b, 0)
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Expect(err).ToNot(HaveOccurred())
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_, err = iHdr.Parse(b, protocol.PerspectiveServer, versionIETFHeader)
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Expect(err).To(Equal(io.EOF))
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}
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})
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})
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Context("Short Headers", func() {
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It("reads a Short Header with a 8 byte connection ID", func() {
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connID := protocol.ConnectionID{0xde, 0xad, 0xbe, 0xef, 0xca, 0xfe, 0x13, 0x37}
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data := append([]byte{0x30}, connID...)
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data = appendPacketNumber(data, 0x42, protocol.PacketNumberLen1)
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b := bytes.NewReader(data)
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iHdr, err := ParseInvariantHeader(b, 8)
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Expect(err).ToNot(HaveOccurred())
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Expect(iHdr.IsLongHeader).To(BeFalse())
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Expect(iHdr.DestConnectionID).To(Equal(connID))
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hdr, err := iHdr.Parse(b, protocol.PerspectiveClient, versionIETFHeader)
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Expect(err).ToNot(HaveOccurred())
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Expect(hdr.KeyPhase).To(Equal(0))
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Expect(hdr.DestConnectionID).To(Equal(connID))
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Expect(hdr.SrcConnectionID).To(BeEmpty())
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Expect(hdr.PacketNumber).To(Equal(protocol.PacketNumber(0x42)))
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Expect(hdr.IsVersionNegotiation).To(BeFalse())
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Expect(b.Len()).To(BeZero())
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})
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It("reads a Short Header with a 5 byte connection ID", func() {
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connID := protocol.ConnectionID{1, 2, 3, 4, 5}
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data := append([]byte{0x30}, connID...)
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data = appendPacketNumber(data, 0x42, protocol.PacketNumberLen1)
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b := bytes.NewReader(data)
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iHdr, err := ParseInvariantHeader(b, 5)
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Expect(err).ToNot(HaveOccurred())
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Expect(iHdr.IsLongHeader).To(BeFalse())
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Expect(iHdr.DestConnectionID).To(Equal(connID))
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hdr, err := iHdr.Parse(b, protocol.PerspectiveClient, versionIETFHeader)
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Expect(err).ToNot(HaveOccurred())
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Expect(hdr.KeyPhase).To(Equal(0))
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Expect(hdr.DestConnectionID).To(Equal(connID))
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Expect(hdr.SrcConnectionID).To(BeEmpty())
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Expect(b.Len()).To(BeZero())
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})
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It("reads the Key Phase Bit", func() {
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data := []byte{
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0x30 ^ 0x40,
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0xde, 0xad, 0xbe, 0xef, 0xca, 0xfe, // connection ID
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}
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data = appendPacketNumber(data, 11, protocol.PacketNumberLen1)
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b := bytes.NewReader(data)
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iHdr, err := ParseInvariantHeader(b, 6)
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Expect(err).ToNot(HaveOccurred())
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hdr, err := iHdr.Parse(b, protocol.PerspectiveServer, versionIETFHeader)
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Expect(err).ToNot(HaveOccurred())
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Expect(hdr.IsLongHeader).To(BeFalse())
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Expect(hdr.KeyPhase).To(Equal(1))
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Expect(b.Len()).To(BeZero())
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})
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It("reads a header with a 2 byte packet number", func() {
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data := []byte{
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0x30 ^ 0x40 ^ 0x1,
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0xde, 0xad, 0xbe, 0xef, // connection ID
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}
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data = appendPacketNumber(data, 0x1337, protocol.PacketNumberLen2)
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b := bytes.NewReader(data)
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iHdr, err := ParseInvariantHeader(b, 4)
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Expect(err).ToNot(HaveOccurred())
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hdr, err := iHdr.Parse(b, protocol.PerspectiveClient, versionIETFHeader)
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Expect(err).ToNot(HaveOccurred())
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Expect(hdr.IsLongHeader).To(BeFalse())
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Expect(hdr.PacketNumber).To(Equal(protocol.PacketNumber(0x1337)))
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Expect(hdr.PacketNumberLen).To(Equal(protocol.PacketNumberLen2))
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Expect(b.Len()).To(BeZero())
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})
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It("reads a header with a 4 byte packet number", func() {
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data := []byte{
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0x30 ^ 0x40 ^ 0x2,
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0xde, 0xad, 0xbe, 0xef, 0xca, 0xfe, 0x1, 0x2, 0x3, 0x4, // connection ID
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}
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data = appendPacketNumber(data, 0x99beef, protocol.PacketNumberLen4)
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b := bytes.NewReader(data)
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iHdr, err := ParseInvariantHeader(b, 10)
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Expect(err).ToNot(HaveOccurred())
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hdr, err := iHdr.Parse(b, protocol.PerspectiveServer, versionIETFHeader)
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Expect(err).ToNot(HaveOccurred())
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Expect(hdr.IsLongHeader).To(BeFalse())
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Expect(hdr.PacketNumber).To(Equal(protocol.PacketNumber(0x99beef)))
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Expect(hdr.PacketNumberLen).To(Equal(protocol.PacketNumberLen4))
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Expect(b.Len()).To(BeZero())
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})
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It("errors on EOF, when parsing the invariant header", func() {
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data := []byte{
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0x30 ^ 0x2,
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0xde, 0xad, 0xbe, 0xef, 0xca, 0xfe, 0x13, 0x37, // connection ID
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}
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for i := 0; i < len(data); i++ {
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_, err := ParseInvariantHeader(bytes.NewReader(data[:i]), 8)
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Expect(err).To(Equal(io.EOF))
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}
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})
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It("errors on EOF, when parsing the invariant header", func() {
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data := []byte{
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0x30 ^ 0x2,
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0xde, 0xad, 0xbe, 0xef, 0xca, 0xfe, // connection ID
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}
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iHdrLen := len(data)
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data = appendPacketNumber(data, 0xdeadbeef, protocol.PacketNumberLen4)
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for i := iHdrLen; i < len(data); i++ {
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b := bytes.NewReader(data[:i])
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iHdr, err := ParseInvariantHeader(b, 6)
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Expect(err).ToNot(HaveOccurred())
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_, err = iHdr.Parse(b, protocol.PerspectiveClient, versionIETFHeader)
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Expect(err).To(Equal(io.EOF))
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}
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})
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})
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})
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Context("Public Header", func() {
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It("accepts a sample client header", func() {
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data := []byte{
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0x9,
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0x4c, 0xfa, 0x9f, 0x9b, 0x66, 0x86, 0x19, 0xf6,
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}
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data = append(data, []byte{0xde, 0xad, 0xbe, 0xef}...)
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data = append(data, 0x1) // packet number
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b := bytes.NewReader(data)
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iHdr, err := ParseInvariantHeader(b, 0)
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Expect(err).ToNot(HaveOccurred())
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Expect(iHdr.IsLongHeader).To(BeFalse())
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hdr, err := iHdr.Parse(b, protocol.PerspectiveClient, versionPublicHeader)
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Expect(err).ToNot(HaveOccurred())
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Expect(hdr.VersionFlag).To(BeTrue())
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Expect(hdr.IsVersionNegotiation).To(BeFalse())
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Expect(hdr.ResetFlag).To(BeFalse())
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connID := protocol.ConnectionID{0x4c, 0xfa, 0x9f, 0x9b, 0x66, 0x86, 0x19, 0xf6}
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Expect(hdr.DestConnectionID).To(Equal(connID))
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Expect(hdr.SrcConnectionID).To(BeEmpty())
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Expect(hdr.Version).To(Equal(protocol.VersionNumber(0xdeadbeef)))
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Expect(hdr.SupportedVersions).To(BeEmpty())
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Expect(hdr.PacketNumber).To(Equal(protocol.PacketNumber(1)))
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Expect(b.Len()).To(BeZero())
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})
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It("accepts an omitted connection ID", func() {
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b := bytes.NewReader([]byte{0x0, 0x1})
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iHdr, err := ParseInvariantHeader(b, 8)
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Expect(err).ToNot(HaveOccurred())
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Expect(iHdr.IsLongHeader).To(BeFalse())
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Expect(iHdr.DestConnectionID).To(BeEmpty())
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Expect(iHdr.SrcConnectionID).To(BeEmpty())
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hdr, err := iHdr.Parse(b, protocol.PerspectiveClient, versionPublicHeader)
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Expect(err).ToNot(HaveOccurred())
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Expect(hdr.PacketNumber).To(Equal(protocol.PacketNumber(1)))
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Expect(b.Len()).To(BeZero())
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})
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It("parses a PUBLIC_RESET packet", func() {
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b := bytes.NewReader([]byte{0xa, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8})
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iHdr, err := ParseInvariantHeader(b, 4)
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Expect(err).ToNot(HaveOccurred())
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Expect(iHdr.IsLongHeader).To(BeFalse())
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hdr, err := iHdr.Parse(b, protocol.PerspectiveServer, versionPublicHeader)
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Expect(err).ToNot(HaveOccurred())
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Expect(hdr.ResetFlag).To(BeTrue())
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Expect(hdr.VersionFlag).To(BeFalse())
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Expect(hdr.IsVersionNegotiation).To(BeFalse())
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connID := protocol.ConnectionID{0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8}
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Expect(hdr.SrcConnectionID).To(BeEmpty())
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Expect(hdr.DestConnectionID).To(Equal(connID))
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})
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It("reads a diversification nonce sent by the server", func() {
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divNonce := []byte{0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9, 0xa, 0xb, 0xc, 0xd, 0xe, 0xf, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f}
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Expect(divNonce).To(HaveLen(32))
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b := bytes.NewReader(append(append([]byte{0x0c, 0xf6, 0x19, 0x86, 0x66, 0x9b, 0x9f, 0xfa, 0x4c}, divNonce...), 0x37))
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iHdr, err := ParseInvariantHeader(b, 7)
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Expect(err).ToNot(HaveOccurred())
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Expect(iHdr.IsLongHeader).To(BeFalse())
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hdr, err := iHdr.Parse(b, protocol.PerspectiveServer, versionPublicHeader)
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Expect(err).ToNot(HaveOccurred())
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Expect(hdr.DestConnectionID).ToNot(BeEmpty())
|
|
Expect(hdr.SrcConnectionID).To(BeEmpty())
|
|
Expect(hdr.DiversificationNonce).To(Equal(divNonce))
|
|
Expect(b.Len()).To(BeZero())
|
|
})
|
|
|
|
It("errors on EOF", func() {
|
|
data := []byte{
|
|
0x10 ^ 0x8 ^ 0x4,
|
|
0xf6, 0x19, 0x86, 0x66, 0x9b, 0x9f, 0xfa, 0x4c,
|
|
}
|
|
iHdrLen := len(data)
|
|
data = append(data, bytes.Repeat([]byte{0}, 32)...) // add a diversification nonce
|
|
data = append(data, []byte{0x13, 37}...) // packet number
|
|
for i := iHdrLen; i < len(data); i++ {
|
|
b := bytes.NewReader(data[:i])
|
|
iHdr, err := ParseInvariantHeader(b, 5)
|
|
Expect(err).ToNot(HaveOccurred())
|
|
_, err = iHdr.Parse(b, protocol.PerspectiveServer, versionPublicHeader)
|
|
Expect(err).To(Equal(io.EOF))
|
|
}
|
|
})
|
|
|
|
Context("version negotiation packets", func() {
|
|
appendVersion := func(data []byte, v protocol.VersionNumber) []byte {
|
|
data = append(data, []byte{0, 0, 0, 0}...)
|
|
binary.BigEndian.PutUint32(data[len(data)-4:], uint32(v))
|
|
return data
|
|
}
|
|
|
|
It("parses", func() {
|
|
connID := protocol.ConnectionID{1, 2, 3, 4, 5, 6, 7, 8}
|
|
versions := []protocol.VersionNumber{0x13, 0x37}
|
|
b := bytes.NewReader(ComposeGQUICVersionNegotiation(connID, versions))
|
|
iHdr, err := ParseInvariantHeader(b, 6)
|
|
Expect(err).ToNot(HaveOccurred())
|
|
hdr, err := iHdr.Parse(b, protocol.PerspectiveServer, versionPublicHeader)
|
|
Expect(err).ToNot(HaveOccurred())
|
|
Expect(hdr.DestConnectionID).To(Equal(connID))
|
|
Expect(hdr.SrcConnectionID).To(BeEmpty())
|
|
Expect(hdr.VersionFlag).To(BeTrue())
|
|
Expect(hdr.Version).To(BeZero()) // unitialized
|
|
Expect(hdr.IsVersionNegotiation).To(BeTrue())
|
|
// in addition to the versions, the supported versions might contain a reserved version number
|
|
for _, version := range versions {
|
|
Expect(hdr.SupportedVersions).To(ContainElement(version))
|
|
}
|
|
Expect(b.Len()).To(BeZero())
|
|
})
|
|
|
|
It("errors if it doesn't contain any versions", func() {
|
|
b := bytes.NewReader([]byte{0x9, 0xf6, 0x19, 0x86, 0x66, 0x9b, 0x9f, 0xfa, 0x4c})
|
|
iHdr, err := ParseInvariantHeader(b, 4)
|
|
Expect(err).ToNot(HaveOccurred())
|
|
_, err = iHdr.Parse(b, protocol.PerspectiveServer, versionPublicHeader)
|
|
Expect(err).To(MatchError("InvalidVersionNegotiationPacket: empty version list"))
|
|
})
|
|
|
|
It("reads version negotiation packets containing unsupported versions", func() {
|
|
data := []byte{0x9, 0xf6, 0x19, 0x86, 0x66, 0x9b, 0x9f, 0xfa, 0x4c}
|
|
data = appendVersion(data, 1) // unsupported version
|
|
data = appendVersion(data, protocol.SupportedVersions[0])
|
|
data = appendVersion(data, 99) // unsupported version
|
|
b := bytes.NewReader(data)
|
|
iHdr, err := ParseInvariantHeader(b, 0)
|
|
Expect(err).ToNot(HaveOccurred())
|
|
hdr, err := iHdr.Parse(b, protocol.PerspectiveServer, versionPublicHeader)
|
|
Expect(err).ToNot(HaveOccurred())
|
|
Expect(hdr.VersionFlag).To(BeTrue())
|
|
Expect(hdr.IsVersionNegotiation).To(BeTrue())
|
|
Expect(hdr.SupportedVersions).To(Equal([]protocol.VersionNumber{1, protocol.SupportedVersions[0], 99}))
|
|
Expect(b.Len()).To(BeZero())
|
|
})
|
|
|
|
It("errors on invalid version tags", func() {
|
|
data := ComposeGQUICVersionNegotiation(protocol.ConnectionID{1, 2, 3, 4, 5, 6, 7, 8}, protocol.SupportedVersions)
|
|
data = append(data, []byte{0x13, 0x37}...)
|
|
b := bytes.NewReader(data)
|
|
iHdr, err := ParseInvariantHeader(b, 0)
|
|
Expect(err).ToNot(HaveOccurred())
|
|
_, err = iHdr.Parse(b, protocol.PerspectiveServer, versionPublicHeader)
|
|
Expect(err).To(MatchError(qerr.InvalidVersionNegotiationPacket))
|
|
})
|
|
})
|
|
|
|
Context("Packet Number lengths", func() {
|
|
It("accepts 1-byte packet numbers", func() {
|
|
b := bytes.NewReader([]byte{0x08, 0x4c, 0xfa, 0x9f, 0x9b, 0x66, 0x86, 0x19, 0xf6, 0xde})
|
|
iHdr, err := ParseInvariantHeader(b, 0)
|
|
Expect(err).ToNot(HaveOccurred())
|
|
hdr, err := iHdr.Parse(b, protocol.PerspectiveServer, versionPublicHeader)
|
|
Expect(err).ToNot(HaveOccurred())
|
|
Expect(hdr.PacketNumber).To(Equal(protocol.PacketNumber(0xde)))
|
|
Expect(hdr.PacketNumberLen).To(Equal(protocol.PacketNumberLen1))
|
|
Expect(b.Len()).To(BeZero())
|
|
})
|
|
|
|
It("accepts 2-byte packet numbers", func() {
|
|
b := bytes.NewReader([]byte{0x18, 0x4c, 0xfa, 0x9f, 0x9b, 0x66, 0x86, 0x19, 0xf6, 0xde, 0xca})
|
|
iHdr, err := ParseInvariantHeader(b, 0)
|
|
Expect(err).ToNot(HaveOccurred())
|
|
hdr, err := iHdr.Parse(b, protocol.PerspectiveServer, versionPublicHeader)
|
|
Expect(err).ToNot(HaveOccurred())
|
|
Expect(hdr.PacketNumber).To(Equal(protocol.PacketNumber(0xdeca)))
|
|
Expect(hdr.PacketNumberLen).To(Equal(protocol.PacketNumberLen2))
|
|
Expect(b.Len()).To(BeZero())
|
|
})
|
|
|
|
It("accepts 4-byte packet numbers", func() {
|
|
b := bytes.NewReader([]byte{0x28, 0x4c, 0xfa, 0x9f, 0x9b, 0x66, 0x86, 0x19, 0xf6, 0xad, 0xfb, 0xca, 0xde})
|
|
iHdr, err := ParseInvariantHeader(b, 0)
|
|
Expect(err).ToNot(HaveOccurred())
|
|
hdr, err := iHdr.Parse(b, protocol.PerspectiveServer, versionPublicHeader)
|
|
Expect(err).ToNot(HaveOccurred())
|
|
Expect(hdr.PacketNumber).To(Equal(protocol.PacketNumber(0xadfbcade)))
|
|
Expect(hdr.PacketNumberLen).To(Equal(protocol.PacketNumberLen4))
|
|
Expect(b.Len()).To(BeZero())
|
|
})
|
|
})
|
|
})
|
|
})
|