mirror of
https://github.com/mochi-mqtt/server.git
synced 2025-10-18 22:14:40 +08:00
343 lines
8.9 KiB
Go
343 lines
8.9 KiB
Go
package packets
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import (
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"bufio"
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"bytes"
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"io"
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"net"
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"testing"
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"time"
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"github.com/stretchr/testify/require"
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)
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func newBufioReader(c io.Reader) *bufio.Reader {
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return bufio.NewReaderSize(c, 512)
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}
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func newBufioWriter(c io.Writer) *bufio.Writer {
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return bufio.NewWriterSize(c, 512)
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}
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func TestNewParser(t *testing.T) {
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conn := new(MockNetConn)
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p := NewParser(conn, newBufioReader(conn), newBufioWriter(conn))
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require.NotNil(t, p.R)
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}
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func BenchmarkNewParser(b *testing.B) {
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conn := new(MockNetConn)
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r, w := new(bufio.Reader), new(bufio.Writer)
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for n := 0; n < b.N; n++ {
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NewParser(conn, r, w)
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}
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}
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func TestRefreshDeadline(t *testing.T) {
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conn := new(MockNetConn)
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p := NewParser(conn, newBufioReader(conn), newBufioWriter(conn))
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dl := p.Conn.(*MockNetConn).Deadline
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p.RefreshDeadline(10)
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require.NotEqual(t, dl, p.Conn.(*MockNetConn).Deadline)
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}
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func BenchmarkRefreshDeadline(b *testing.B) {
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conn := new(MockNetConn)
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p := NewParser(conn, newBufioReader(conn), newBufioWriter(conn))
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for n := 0; n < b.N; n++ {
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p.RefreshDeadline(10)
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}
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}
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func TestReadFixedHeader(t *testing.T) {
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conn := new(MockNetConn)
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// Test null data.
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p := NewParser(conn, newBufioReader(conn), newBufioWriter(conn))
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fh := new(FixedHeader)
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err := p.ReadFixedHeader(fh)
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require.Error(t, err)
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// Test insufficient peeking.
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fh = new(FixedHeader)
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p.R = bufio.NewReader(bytes.NewReader([]byte{Connect << 4}))
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err = p.ReadFixedHeader(fh)
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require.Error(t, err)
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// Test expected bytes.
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for i, wanted := range fixedHeaderExpected {
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fh := new(FixedHeader)
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p := NewParser(conn, newBufioReader(conn), newBufioWriter(conn))
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b := wanted.rawBytes
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p.R = bufio.NewReader(bytes.NewReader(b))
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err := p.ReadFixedHeader(fh)
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if wanted.packetError || wanted.flagError {
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require.Error(t, err, "Expected error [i:%d] %v", i, wanted.rawBytes)
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} else {
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require.NoError(t, err, "Error reading fixedheader [i:%d] %v", i, wanted.rawBytes)
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require.Equal(t, wanted.header.Type, p.FixedHeader.Type, "Mismatched fixedheader type [i:%d] %v", i, wanted.rawBytes)
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require.Equal(t, wanted.header.Dup, p.FixedHeader.Dup, "Mismatched fixedheader dup [i:%d] %v", i, wanted.rawBytes)
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require.Equal(t, wanted.header.Qos, p.FixedHeader.Qos, "Mismatched fixedheader qos [i:%d] %v", i, wanted.rawBytes)
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require.Equal(t, wanted.header.Retain, p.FixedHeader.Retain, "Mismatched fixedheader retain [i:%d] %v", i, wanted.rawBytes)
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}
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}
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}
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func BenchmarkReadFixedHeader(b *testing.B) {
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conn := new(MockNetConn)
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fh := new(FixedHeader)
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p := NewParser(conn, newBufioReader(conn), newBufioWriter(conn))
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var rn bytes.Reader = *bytes.NewReader(fixedHeaderExpected[0].rawBytes)
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var rc bytes.Reader
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for n := 0; n < b.N; n++ {
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rc = rn
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p.R.Reset(&rc)
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err := p.ReadFixedHeader(fh)
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if err != nil {
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panic(err)
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}
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}
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}
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func TestRead(t *testing.T) {
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conn := new(MockNetConn)
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for code, pt := range expectedPackets {
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for i, wanted := range pt {
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if wanted.primary {
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var fh FixedHeader
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b := wanted.rawBytes
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p := NewParser(conn, newBufioReader(conn), newBufioWriter(conn))
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p.R = bufio.NewReader(bytes.NewReader(b))
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err := p.ReadFixedHeader(&fh)
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if wanted.failFirst != nil {
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require.Error(t, err, "Expected error reading fixedheader [i:%d] %s - %s", i, wanted.desc, Names[code])
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} else {
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require.NoError(t, err, "Error reading fixedheader [i:%d] %s - %s", i, wanted.desc, Names[code])
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}
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pko, err := p.Read()
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if wanted.expect != nil {
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require.Error(t, err, "Expected error reading packet [i:%d] %s - %s", i, wanted.desc, Names[code])
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if err != nil {
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require.Equal(t, err, wanted.expect, "Mismatched packet error [i:%d] %s - %s", i, wanted.desc, Names[code])
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}
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} else {
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require.NoError(t, err, "Error reading packet [i:%d] %s - %s", i, wanted.desc, Names[code])
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require.Equal(t, wanted.packet, pko, "Mismatched packet final [i:%d] %s - %s", i, wanted.desc, Names[code])
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}
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}
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}
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}
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// Fail decoder
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var fh FixedHeader
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p := NewParser(conn, newBufioReader(conn), newBufioWriter(conn))
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p.R = bufio.NewReader(bytes.NewReader([]byte{
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byte(Publish << 4), 3, // Fixed header
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0, 5, // Topic Name - LSB+MSB
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'a', '/',
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}))
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err := p.ReadFixedHeader(&fh)
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require.NoError(t, err)
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_, err = p.Read()
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require.Error(t, err)
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}
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func BenchmarkRead(b *testing.B) {
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conn := new(MockNetConn)
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p := NewParser(conn, newBufioReader(conn), newBufioWriter(conn))
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p.R = bufio.NewReader(bytes.NewReader(expectedPackets[Publish][1].rawBytes))
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var fh FixedHeader
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err := p.ReadFixedHeader(&fh)
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if err != nil {
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panic(err)
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}
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var rn bytes.Reader = *bytes.NewReader(expectedPackets[Publish][1].rawBytes)
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var rc bytes.Reader
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for n := 0; n < b.N; n++ {
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rc = rn
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p.R.Reset(&rc)
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p.R.Discard(2)
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_, err := p.Read()
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if err != nil {
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panic(err)
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}
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}
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}
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// This is a super important test. It checks whether or not subsequent packets
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// mutate each other. This happens when you use a single byte buffer for decoding
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// multiple packets.
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func TestReadPacketNoOverwrite(t *testing.T) {
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pk1 := []byte{
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byte(Publish << 4), 12, // Fixed header
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0, 5, // Topic Name - LSB+MSB
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'a', '/', 'b', '/', 'c', // Topic Name
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'h', 'e', 'l', 'l', 'o', // Payload
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}
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pk2 := []byte{
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byte(Publish << 4), 14, // Fixed header
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0, 5, // Topic Name - LSB+MSB
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'x', '/', 'y', '/', 'z', // Topic Name
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'y', 'a', 'h', 'a', 'l', 'l', 'o', // Payload
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}
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r, w := net.Pipe()
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p := NewParser(r, newBufioReader(r), newBufioWriter(w))
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go func() {
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w.Write(pk1)
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w.Write(pk2)
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w.Close()
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}()
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var fh FixedHeader
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err := p.ReadFixedHeader(&fh)
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require.NoError(t, err)
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o1, err := p.Read()
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require.NoError(t, err)
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require.Equal(t, []byte{'h', 'e', 'l', 'l', 'o'}, o1.(*PublishPacket).Payload)
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require.Equal(t, []byte{'h', 'e', 'l', 'l', 'o'}, pk1[9:])
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require.NoError(t, err)
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err = p.ReadFixedHeader(&fh)
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require.NoError(t, err)
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o2, err := p.Read()
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require.NoError(t, err)
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require.Equal(t, []byte{'y', 'a', 'h', 'a', 'l', 'l', 'o'}, o2.(*PublishPacket).Payload)
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require.Equal(t, []byte{'h', 'e', 'l', 'l', 'o'}, o1.(*PublishPacket).Payload, "o1 payload was mutated")
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}
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func TestReadPacketNil(t *testing.T) {
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conn := new(MockNetConn)
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var fh FixedHeader
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p := NewParser(conn, newBufioReader(conn), newBufioWriter(conn))
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// Check for un-specified packet.
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// Create a ping request packet with a false fixedheader type code.
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pk := newPacket(Pingreq).(*PingreqPacket)
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pk.FixedHeader.Type = 99
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p.R = bufio.NewReader(bytes.NewReader([]byte{0, 0}))
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err := p.ReadFixedHeader(&fh)
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_, err = p.Read()
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require.Error(t, err, "Expected error reading packet")
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}
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func TestReadPacketReadOverflow(t *testing.T) {
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conn := new(MockNetConn)
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var fh FixedHeader
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p := NewParser(conn, newBufioReader(conn), newBufioWriter(conn))
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// Check for un-specified packet.
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// Create a ping request packet with a false fixedheader type code.
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pk := newPacket(Pingreq).(*PingreqPacket)
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pk.FixedHeader.Type = 99
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p.R = bufio.NewReader(bytes.NewReader([]byte{byte(Connect << 4), 0}))
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err := p.ReadFixedHeader(&fh)
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p.FixedHeader.Remaining = 999999 // overflow buffer
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_, err = p.Read()
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require.Error(t, err, "Expected error reading packet")
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}
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func TestReadPacketReadAllFail(t *testing.T) {
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conn := new(MockNetConn)
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var fh FixedHeader
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p := NewParser(conn, newBufioReader(conn), newBufioWriter(conn))
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// Check for un-specified packet.
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// Create a ping request packet with a false fixedheader type code.
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pk := newPacket(Pingreq).(*PingreqPacket)
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pk.FixedHeader.Type = 99
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p.R = bufio.NewReader(bytes.NewReader([]byte{byte(Connect << 4), 0}))
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err := p.ReadFixedHeader(&fh)
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p.FixedHeader.Remaining = 1 // overflow buffer
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_, err = p.Read()
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require.Error(t, err, "Expected error reading packet")
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}
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// MockNetConn satisfies the net.Conn interface.
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type MockNetConn struct {
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ID string
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Deadline time.Time
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}
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// Read reads bytes from the net io.reader.
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func (m *MockNetConn) Read(b []byte) (n int, err error) {
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return 0, nil
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}
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// Read writes bytes to the net io.writer.
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func (m *MockNetConn) Write(b []byte) (n int, err error) {
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return 0, nil
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}
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// Close closes the net.Conn connection.
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func (m *MockNetConn) Close() error {
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return nil
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}
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// LocalAddr returns the local address of the request.
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func (m *MockNetConn) LocalAddr() net.Addr {
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return new(MockNetAddr)
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}
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// RemoteAddr returns the remove address of the request.
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func (m *MockNetConn) RemoteAddr() net.Addr {
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return new(MockNetAddr)
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}
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// SetDeadline sets the request deadline.
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func (m *MockNetConn) SetDeadline(t time.Time) error {
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m.Deadline = t
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return nil
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}
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// SetReadDeadline sets the read deadline.
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func (m *MockNetConn) SetReadDeadline(t time.Time) error {
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return nil
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}
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// SetWriteDeadline sets the write deadline.
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func (m *MockNetConn) SetWriteDeadline(t time.Time) error {
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return nil
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}
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// MockNetAddr satisfies net.Addr interface.
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type MockNetAddr struct{}
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// Network returns the network protocol.
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func (m *MockNetAddr) Network() string {
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return "tcp"
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}
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// String returns the network address.
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func (m *MockNetAddr) String() string {
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return "127.0.0.1"
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}
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