github.com/MerlinKodo/quic-go@v0.39.2/internal/wire/new_connection_id_frame_test.go (about)

     1  package wire
     2  
     3  import (
     4  	"bytes"
     5  	"io"
     6  
     7  	"github.com/MerlinKodo/quic-go/internal/protocol"
     8  
     9  	. "github.com/onsi/ginkgo/v2"
    10  	. "github.com/onsi/gomega"
    11  )
    12  
    13  var _ = Describe("NEW_CONNECTION_ID frame", func() {
    14  	Context("when parsing", func() {
    15  		It("accepts a sample frame", func() {
    16  			data := encodeVarInt(0xdeadbeef)                              // sequence number
    17  			data = append(data, encodeVarInt(0xcafe)...)                  // retire prior to
    18  			data = append(data, 10)                                       // connection ID length
    19  			data = append(data, []byte{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}...) // connection ID
    20  			data = append(data, []byte("deadbeefdecafbad")...)            // stateless reset token
    21  			b := bytes.NewReader(data)
    22  			frame, err := parseNewConnectionIDFrame(b, protocol.Version1)
    23  			Expect(err).ToNot(HaveOccurred())
    24  			Expect(frame.SequenceNumber).To(Equal(uint64(0xdeadbeef)))
    25  			Expect(frame.RetirePriorTo).To(Equal(uint64(0xcafe)))
    26  			Expect(frame.ConnectionID).To(Equal(protocol.ParseConnectionID([]byte{1, 2, 3, 4, 5, 6, 7, 8, 9, 10})))
    27  			Expect(string(frame.StatelessResetToken[:])).To(Equal("deadbeefdecafbad"))
    28  			Expect(b.Len()).To(BeZero())
    29  		})
    30  
    31  		It("errors when the Retire Prior To value is larger than the Sequence Number", func() {
    32  			data := encodeVarInt(1000)                 // sequence number
    33  			data = append(data, encodeVarInt(1001)...) // retire prior to
    34  			data = append(data, 3)
    35  			data = append(data, []byte{1, 2, 3}...)
    36  			data = append(data, []byte("deadbeefdecafbad")...) // stateless reset token
    37  			_, err := parseNewConnectionIDFrame(bytes.NewReader(data), protocol.Version1)
    38  			Expect(err).To(MatchError("Retire Prior To value (1001) larger than Sequence Number (1000)"))
    39  		})
    40  
    41  		It("errors when the connection ID has an invalid length", func() {
    42  			data := encodeVarInt(0xdeadbeef)                                                                          // sequence number
    43  			data = append(data, encodeVarInt(0xcafe)...)                                                              // retire prior to
    44  			data = append(data, 21)                                                                                   // connection ID length
    45  			data = append(data, []byte{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21}...) // connection ID
    46  			data = append(data, []byte("deadbeefdecafbad")...)                                                        // stateless reset token
    47  			_, err := parseNewConnectionIDFrame(bytes.NewReader(data), protocol.Version1)
    48  			Expect(err).To(MatchError(protocol.ErrInvalidConnectionIDLen))
    49  		})
    50  
    51  		It("errors on EOFs", func() {
    52  			data := encodeVarInt(0xdeadbeef)                              // sequence number
    53  			data = append(data, encodeVarInt(0xcafe1234)...)              // retire prior to
    54  			data = append(data, 10)                                       // connection ID length
    55  			data = append(data, []byte{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}...) // connection ID
    56  			data = append(data, []byte("deadbeefdecafbad")...)            // stateless reset token
    57  			_, err := parseNewConnectionIDFrame(bytes.NewReader(data), protocol.Version1)
    58  			Expect(err).NotTo(HaveOccurred())
    59  			for i := range data {
    60  				_, err := parseNewConnectionIDFrame(bytes.NewReader(data[:i]), protocol.Version1)
    61  				Expect(err).To(MatchError(io.EOF))
    62  			}
    63  		})
    64  	})
    65  
    66  	Context("when writing", func() {
    67  		It("writes a sample frame", func() {
    68  			token := protocol.StatelessResetToken{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15}
    69  			frame := &NewConnectionIDFrame{
    70  				SequenceNumber:      0x1337,
    71  				RetirePriorTo:       0x42,
    72  				ConnectionID:        protocol.ParseConnectionID([]byte{1, 2, 3, 4, 5, 6}),
    73  				StatelessResetToken: token,
    74  			}
    75  			b, err := frame.Append(nil, protocol.Version1)
    76  			Expect(err).ToNot(HaveOccurred())
    77  			expected := []byte{newConnectionIDFrameType}
    78  			expected = append(expected, encodeVarInt(0x1337)...)
    79  			expected = append(expected, encodeVarInt(0x42)...)
    80  			expected = append(expected, 6)
    81  			expected = append(expected, []byte{1, 2, 3, 4, 5, 6}...)
    82  			expected = append(expected, token[:]...)
    83  			Expect(b).To(Equal(expected))
    84  		})
    85  
    86  		It("has the correct length", func() {
    87  			token := protocol.StatelessResetToken{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15}
    88  			frame := &NewConnectionIDFrame{
    89  				SequenceNumber:      0xdecafbad,
    90  				RetirePriorTo:       0xdeadbeefcafe,
    91  				ConnectionID:        protocol.ParseConnectionID([]byte{1, 2, 3, 4, 5, 6, 7, 8}),
    92  				StatelessResetToken: token,
    93  			}
    94  			b, err := frame.Append(nil, protocol.Version1)
    95  			Expect(err).ToNot(HaveOccurred())
    96  			Expect(b).To(HaveLen(int(frame.Length(protocol.Version1))))
    97  		})
    98  	})
    99  })