mirror of
https://github.com/refraction-networking/uquic.git
synced 2025-04-03 20:27:35 +03:00
96 lines
3.4 KiB
Go
96 lines
3.4 KiB
Go
package quic
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import (
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"bytes"
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"errors"
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"github.com/golang/mock/gomock"
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"github.com/lucas-clemente/quic-go/internal/protocol"
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"github.com/lucas-clemente/quic-go/internal/qerr"
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"github.com/lucas-clemente/quic-go/internal/wire"
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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("Packet Unpacker", func() {
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var (
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unpacker *packetUnpacker
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hdr *wire.ExtendedHeader
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aead *MockQuicAEAD
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)
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BeforeEach(func() {
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aead = NewMockQuicAEAD(mockCtrl)
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hdr = &wire.ExtendedHeader{
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PacketNumber: 10,
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PacketNumberLen: 1,
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Raw: []byte{0x04, 0x4c, 0x01},
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}
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unpacker = newPacketUnpacker(aead, protocol.VersionWhatever).(*packetUnpacker)
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})
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It("errors if the packet doesn't contain any payload", func() {
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data := []byte("foobar")
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aead.EXPECT().Open1RTT(gomock.Any(), []byte("foobar"), hdr.PacketNumber, hdr.Raw).Return([]byte{}, nil)
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_, err := unpacker.Unpack(hdr, data)
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Expect(err).To(MatchError(qerr.MissingPayload))
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})
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It("opens Initial packets", func() {
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hdr.IsLongHeader = true
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hdr.Type = protocol.PacketTypeInitial
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aead.EXPECT().OpenInitial(gomock.Any(), gomock.Any(), hdr.PacketNumber, hdr.Raw).Return([]byte{0}, nil)
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packet, err := unpacker.Unpack(hdr, nil)
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Expect(err).ToNot(HaveOccurred())
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Expect(packet.encryptionLevel).To(Equal(protocol.EncryptionInitial))
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})
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It("opens Handshake packets", func() {
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hdr.IsLongHeader = true
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hdr.Type = protocol.PacketTypeHandshake
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aead.EXPECT().OpenHandshake(gomock.Any(), gomock.Any(), hdr.PacketNumber, hdr.Raw).Return([]byte{0}, nil)
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packet, err := unpacker.Unpack(hdr, nil)
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Expect(err).ToNot(HaveOccurred())
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Expect(packet.encryptionLevel).To(Equal(protocol.EncryptionHandshake))
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})
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It("returns the error when unpacking fails", func() {
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hdr.IsLongHeader = true
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hdr.Type = protocol.PacketTypeHandshake
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aead.EXPECT().OpenHandshake(gomock.Any(), gomock.Any(), gomock.Any(), gomock.Any()).Return(nil, errors.New("test err"))
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_, err := unpacker.Unpack(hdr, nil)
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Expect(err).To(MatchError(qerr.Error(qerr.DecryptionFailure, "test err")))
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})
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It("decodes the packet number", func() {
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firstHdr := &wire.ExtendedHeader{
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PacketNumber: 0x1337,
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PacketNumberLen: 2,
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}
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aead.EXPECT().Open1RTT(gomock.Any(), gomock.Any(), firstHdr.PacketNumber, gomock.Any()).Return([]byte{0}, nil)
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packet, err := unpacker.Unpack(firstHdr, nil)
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Expect(err).ToNot(HaveOccurred())
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Expect(packet.packetNumber).To(Equal(protocol.PacketNumber(0x1337)))
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// the real packet number is 0x1338, but only the last byte is sent
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secondHdr := &wire.ExtendedHeader{
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PacketNumber: 0x38,
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PacketNumberLen: 1,
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}
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// expect the call with the decoded packet number
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aead.EXPECT().Open1RTT(gomock.Any(), gomock.Any(), protocol.PacketNumber(0x1338), gomock.Any()).Return([]byte{0}, nil)
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packet, err = unpacker.Unpack(secondHdr, nil)
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Expect(err).ToNot(HaveOccurred())
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Expect(packet.packetNumber).To(Equal(protocol.PacketNumber(0x1338)))
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})
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It("unpacks the frames", func() {
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buf := &bytes.Buffer{}
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(&wire.PingFrame{}).Write(buf, protocol.VersionWhatever)
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(&wire.DataBlockedFrame{}).Write(buf, protocol.VersionWhatever)
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aead.EXPECT().Open1RTT(gomock.Any(), gomock.Any(), hdr.PacketNumber, hdr.Raw).Return(buf.Bytes(), nil)
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packet, err := unpacker.Unpack(hdr, nil)
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Expect(err).ToNot(HaveOccurred())
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Expect(packet.frames).To(Equal([]wire.Frame{&wire.PingFrame{}, &wire.DataBlockedFrame{}}))
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})
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})
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