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package wire
import (
"bytes"
"io"
"testing"
"github.com/quic-go/quic-go/internal/protocol"
"github.com/stretchr/testify/require"
)
func TestParseShortHeader(t *testing.T) {
data := []byte{
0b01000110,
0xde, 0xad, 0xbe, 0xef,
0x13, 0x37, 0x99,
}
l, pn, pnLen, kp, err := ParseShortHeader(data, 4)
require.NoError(t, err)
require.Equal(t, len(data), l)
require.Equal(t, protocol.KeyPhaseOne, kp)
require.Equal(t, protocol.PacketNumber(0x133799), pn)
require.Equal(t, protocol.PacketNumberLen3, pnLen)
}
func TestParseShortHeaderNoQUICBit(t *testing.T) {
data := []byte{
0b00000101,
0xde, 0xad, 0xbe, 0xef,
0x13, 0x37,
}
_, _, _, _, err := ParseShortHeader(data, 4)
require.EqualError(t, err, "not a QUIC packet")
}
func TestParseShortHeaderReservedBitsSet(t *testing.T) {
data := []byte{
0b01010101,
0xde, 0xad, 0xbe, 0xef,
0x13, 0x37,
}
_, pn, _, _, err := ParseShortHeader(data, 4)
require.EqualError(t, err, ErrInvalidReservedBits.Error())
require.Equal(t, protocol.PacketNumber(0x1337), pn)
}
func TestParseShortHeaderErrorsWhenPassedLongHeaderPacket(t *testing.T) {
_, _, _, _, err := ParseShortHeader([]byte{0x80}, 4)
require.EqualError(t, err, "not a short header packet")
}
func TestParseShortHeaderErrorsOnEOF(t *testing.T) {
data := []byte{
0b01000110,
0xde, 0xad, 0xbe, 0xef,
0x13, 0x37, 0x99,
}
_, _, _, _, err := ParseShortHeader(data, 4)
require.NoError(t, err)
for i := range data {
_, _, _, _, err := ParseShortHeader(data[:i], 4)
require.EqualError(t, err, io.EOF.Error())
}
}
func TestShortHeaderLen(t *testing.T) {
require.Equal(t, protocol.ByteCount(8), ShortHeaderLen(protocol.ParseConnectionID([]byte{1, 2, 3, 4}), protocol.PacketNumberLen3))
require.Equal(t, protocol.ByteCount(2), ShortHeaderLen(protocol.ParseConnectionID([]byte{}), protocol.PacketNumberLen1))
}
func TestWriteShortHeaderPacket(t *testing.T) {
connID := protocol.ParseConnectionID([]byte{1, 2, 3, 4})
b, err := AppendShortHeader(nil, connID, 1337, 4, protocol.KeyPhaseOne)
require.NoError(t, err)
l, pn, pnLen, kp, err := ParseShortHeader(b, 4)
require.NoError(t, err)
require.Equal(t, protocol.PacketNumber(1337), pn)
require.Equal(t, protocol.PacketNumberLen4, pnLen)
require.Equal(t, protocol.KeyPhaseOne, kp)
require.Equal(t, len(b), l)
}
func TestLogShortHeaderWithConnectionID(t *testing.T) {
buf := &bytes.Buffer{}
logger := setupLogTest(t, buf)
connID := protocol.ParseConnectionID([]byte{0xde, 0xad, 0xbe, 0xef, 0xca, 0xfe, 0x13, 0x37})
LogShortHeader(logger, connID, 1337, protocol.PacketNumberLen4, protocol.KeyPhaseOne)
require.Contains(t, buf.String(), "Short Header{DestConnectionID: deadbeefcafe1337, PacketNumber: 1337, PacketNumberLen: 4, KeyPhase: 1}")
}
func BenchmarkWriteShortHeader(b *testing.B) {
b.ReportAllocs()
buf := make([]byte, 100)
connID := protocol.ParseConnectionID([]byte{1, 2, 3, 4, 5, 6})
for i := 0; i < b.N; i++ {
var err error
buf, err = AppendShortHeader(buf, connID, 1337, protocol.PacketNumberLen4, protocol.KeyPhaseOne)
if err != nil {
b.Fatalf("failed to write short header: %s", err)
}
buf = buf[:0]
}
}
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