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server_test.go
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server_test.go
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// SPDX-License-Identifier: MIT
// SPDX-FileCopyrightText: 2022 mochi-mqtt, mochi-co
// SPDX-FileContributor: mochi-co
package mqttsrv
import (
"bytes"
"encoding/binary"
"io"
"log/slog"
"net"
"strconv"
"sync"
"sync/atomic"
"testing"
"time"
"github.com/aimore-group/mqttsrv/hooks/storage"
"github.com/aimore-group/mqttsrv/listeners"
"github.com/aimore-group/mqttsrv/packets"
"github.com/aimore-group/mqttsrv/system"
"github.com/stretchr/testify/require"
)
var logger = slog.New(slog.NewTextHandler(io.Discard, nil))
type ProtocolTest []struct {
protocolVersion byte
in packets.TPacketCase
out packets.TPacketCase
data map[string]any
}
type AllowHook struct {
HookBase
}
func (h *AllowHook) SetOpts(l *slog.Logger, opts *HookOptions) {
h.Log = l
h.Opts = opts
}
func (h *AllowHook) ID() string {
return "allow-all-auth"
}
func (h *AllowHook) Provides(b byte) bool {
return bytes.Contains([]byte{OnConnectAuthenticate, OnACLCheck}, []byte{b})
}
func (h *AllowHook) OnConnectAuthenticate(cl *Client, pk packets.Packet) bool { return true }
func (h *AllowHook) OnACLCheck(cl *Client, topic string, write bool) bool { return true }
type DenyHook struct {
HookBase
}
func (h *DenyHook) SetOpts(l *slog.Logger, opts *HookOptions) {
h.Log = l
h.Opts = opts
}
func (h *DenyHook) ID() string {
return "deny-all-auth"
}
func (h *DenyHook) Provides(b byte) bool {
return bytes.Contains([]byte{OnConnectAuthenticate, OnACLCheck}, []byte{b})
}
func (h *DenyHook) OnConnectAuthenticate(cl *Client, pk packets.Packet) bool { return false }
func (h *DenyHook) OnACLCheck(cl *Client, topic string, write bool) bool { return false }
type DelayHook struct {
HookBase
DisconnectDelay time.Duration
}
func (h *DelayHook) SetOpts(l *slog.Logger, opts *HookOptions) {
h.Log = l
h.Opts = opts
}
func (h *DelayHook) ID() string {
return "delay-hook"
}
func (h *DelayHook) Provides(b byte) bool {
return bytes.Contains([]byte{OnDisconnect}, []byte{b})
}
func (h *DelayHook) OnDisconnect(cl *Client, err error, expire bool) {
time.Sleep(h.DisconnectDelay)
}
func newServer() *Server {
cc := *DefaultServerCapabilities
cc.MaximumMessageExpiryInterval = 0
cc.ReceiveMaximum = 0
s := New(&Options{
Logger: logger,
Capabilities: &cc,
})
_ = s.AddHook(new(AllowHook), nil)
return s
}
func newServerWithInlineClient() *Server {
cc := *DefaultServerCapabilities
cc.MaximumMessageExpiryInterval = 0
cc.ReceiveMaximum = 0
s := New(&Options{
Logger: logger,
Capabilities: &cc,
InlineClient: true,
})
_ = s.AddHook(new(AllowHook), nil)
return s
}
func TestOptionsSetDefaults(t *testing.T) {
opts := &Options{}
opts.ensureDefaults()
require.Equal(t, defaultSysTopicInterval, opts.SysTopicResendInterval)
require.Equal(t, DefaultServerCapabilities, opts.Capabilities)
opts = new(Options)
opts.ensureDefaults()
require.Equal(t, defaultSysTopicInterval, opts.SysTopicResendInterval)
}
func TestNew(t *testing.T) {
s := New(nil)
require.NotNil(t, s)
require.NotNil(t, s.Clients)
require.NotNil(t, s.Listeners)
require.NotNil(t, s.Topics)
require.NotNil(t, s.Info)
require.NotNil(t, s.Log)
require.NotNil(t, s.Options)
require.NotNil(t, s.loop)
require.NotNil(t, s.loop.sysTopics)
require.NotNil(t, s.loop.inflightExpiry)
require.NotNil(t, s.loop.clientExpiry)
require.NotNil(t, s.hooks)
require.NotNil(t, s.hooks.Log)
require.NotNil(t, s.done)
require.Nil(t, s.inlineClient)
require.Equal(t, 0, s.Clients.Len())
}
func TestNewWithInlineClient(t *testing.T) {
s := New(&Options{
InlineClient: true,
})
require.NotNil(t, s.inlineClient)
require.Equal(t, 1, s.Clients.Len())
}
func TestNewNilOpts(t *testing.T) {
s := New(nil)
require.NotNil(t, s)
require.NotNil(t, s.Options)
}
func TestServerNewClient(t *testing.T) {
s := New(nil)
s.Log = logger
r, _ := net.Pipe()
cl := s.NewClient(r, "testing", "test", false)
require.NotNil(t, cl)
require.Equal(t, "test", cl.ID)
require.Equal(t, "testing", cl.Net.Listener)
require.False(t, cl.Net.Inline)
require.NotNil(t, cl.State.Inflight.internal)
require.NotNil(t, cl.State.Subscriptions)
require.NotNil(t, cl.State.TopicAliases)
require.Equal(t, defaultKeepalive, cl.State.Keepalive)
require.Equal(t, defaultClientProtocolVersion, cl.Properties.ProtocolVersion)
require.NotNil(t, cl.Net.Conn)
require.NotNil(t, cl.Net.bconn)
require.NotNil(t, cl.ops)
require.Equal(t, s.Log, cl.ops.log)
}
func TestServerNewClientInline(t *testing.T) {
s := New(nil)
cl := s.NewClient(nil, "testing", "test", true)
require.True(t, cl.Net.Inline)
}
func TestServerAddHook(t *testing.T) {
s := New(nil)
s.Log = logger
require.NotNil(t, s)
require.Equal(t, int64(0), s.hooks.Len())
err := s.AddHook(new(HookBase), nil)
require.NoError(t, err)
require.Equal(t, int64(1), s.hooks.Len())
}
func TestServerAddListener(t *testing.T) {
s := newServer()
defer s.Close()
require.NotNil(t, s)
err := s.AddListener(listeners.NewMockListener("t1", ":1882"))
require.NoError(t, err)
// add existing listener
err = s.AddListener(listeners.NewMockListener("t1", ":1882"))
require.Error(t, err)
require.Equal(t, ErrListenerIDExists, err)
}
func TestServerAddListenerInitFailure(t *testing.T) {
s := newServer()
defer s.Close()
require.NotNil(t, s)
m := listeners.NewMockListener("t1", ":1882")
m.ErrListen = true
err := s.AddListener(m)
require.Error(t, err)
}
func TestServerServe(t *testing.T) {
s := newServer()
defer s.Close()
require.NotNil(t, s)
err := s.AddListener(listeners.NewMockListener("t1", ":1882"))
require.NoError(t, err)
err = s.Serve()
require.NoError(t, err)
time.Sleep(time.Millisecond)
require.Equal(t, 1, s.Listeners.Len())
listener, ok := s.Listeners.Get("t1")
require.Equal(t, true, ok)
require.Equal(t, true, listener.(*listeners.MockListener).IsServing())
}
func TestServerServeReadStoreFailure(t *testing.T) {
s := newServer()
defer s.Close()
require.NotNil(t, s)
err := s.AddListener(listeners.NewMockListener("t1", ":1882"))
require.NoError(t, err)
hook := new(modifiedHookBase)
hook.failAt = 1
err = s.AddHook(hook, nil)
require.NoError(t, err)
err = s.Serve()
require.Error(t, err)
}
func TestServerEventLoop(t *testing.T) {
s := newServer()
defer s.Close()
s.loop.sysTopics = time.NewTicker(time.Millisecond)
s.loop.inflightExpiry = time.NewTicker(time.Millisecond)
s.loop.clientExpiry = time.NewTicker(time.Millisecond)
s.loop.retainedExpiry = time.NewTicker(time.Millisecond)
s.loop.willDelaySend = time.NewTicker(time.Millisecond)
go s.eventLoop()
time.Sleep(time.Millisecond * 3)
}
func TestServerReadConnectionPacket(t *testing.T) {
s := newServer()
defer s.Close()
cl, r, _ := newTestClient()
s.Clients.Add(cl)
o := make(chan packets.Packet)
go func() {
pk, err := s.readConnectionPacket(cl)
require.NoError(t, err)
o <- pk
}()
go func() {
_, _ = r.Write(packets.TPacketData[packets.Connect].Get(packets.TConnectMqtt311).RawBytes)
_ = r.Close()
}()
require.Equal(t, *packets.TPacketData[packets.Connect].Get(packets.TConnectMqtt311).Packet, <-o)
}
func TestServerReadConnectionPacketBadFixedHeader(t *testing.T) {
s := newServer()
defer s.Close()
cl, r, _ := newTestClient()
s.Clients.Add(cl)
o := make(chan error)
go func() {
_, err := s.readConnectionPacket(cl)
o <- err
}()
go func() {
_, _ = r.Write(packets.TPacketData[packets.Connect].Get(packets.TConnectMalFixedHeader).RawBytes)
_ = r.Close()
}()
err := <-o
require.Error(t, err)
require.Equal(t, packets.ErrMalformedVariableByteInteger, err)
}
func TestServerReadConnectionPacketBadPacketType(t *testing.T) {
s := newServer()
defer s.Close()
cl, r, _ := newTestClient()
s.Clients.Add(cl)
go func() {
_, _ = r.Write(packets.TPacketData[packets.Connack].Get(packets.TConnackAcceptedNoSession).RawBytes)
_ = r.Close()
}()
_, err := s.readConnectionPacket(cl)
require.Error(t, err)
require.Equal(t, packets.ErrProtocolViolationRequireFirstConnect, err)
}
func TestServerReadConnectionPacketBadPacket(t *testing.T) {
s := newServer()
defer s.Close()
cl, r, _ := newTestClient()
s.Clients.Add(cl)
go func() {
_, _ = r.Write(packets.TPacketData[packets.Connect].Get(packets.TConnectMalProtocolName).RawBytes)
_ = r.Close()
}()
_, err := s.readConnectionPacket(cl)
require.Error(t, err)
require.ErrorIs(t, err, packets.ErrMalformedProtocolName)
}
func TestEstablishConnection(t *testing.T) {
s := newServer()
defer s.Close()
r, w := net.Pipe()
o := make(chan error)
go func() {
o <- s.EstablishConnection("tcp", r)
}()
go func() {
_, _ = w.Write(packets.TPacketData[packets.Connect].Get(packets.TConnectClean).RawBytes)
_, _ = w.Write(packets.TPacketData[packets.Disconnect].Get(packets.TDisconnect).RawBytes)
}()
// receive the connack
recv := make(chan []byte)
go func() {
buf, err := io.ReadAll(w)
require.NoError(t, err)
recv <- buf
}()
err := <-o
require.NoError(t, err)
// Todo:
// s.Clients is already empty here. Is it necessary to check v.StopCause()?
// for _, v := range s.Clients.GetAll() {
// require.ErrorIs(t, v.StopCause(), packets.CodeDisconnect) // true error is disconnect
// }
require.Equal(t, packets.TPacketData[packets.Connack].Get(packets.TConnackAcceptedNoSession).RawBytes, <-recv)
_ = w.Close()
_ = r.Close()
// client must be deleted on session close if Clean = true
_, ok := s.Clients.Get(packets.TPacketData[packets.Connect].Get(packets.TConnectClean).Packet.Connect.ClientIdentifier)
require.False(t, ok)
}
func TestEstablishConnectionAckFailure(t *testing.T) {
s := newServer()
defer s.Close()
r, w := net.Pipe()
o := make(chan error)
go func() {
o <- s.EstablishConnection("tcp", r)
}()
go func() {
_, _ = w.Write(packets.TPacketData[packets.Connect].Get(packets.TConnectClean).RawBytes)
_ = w.Close()
}()
err := <-o
require.Error(t, err)
require.ErrorIs(t, err, io.ErrClosedPipe)
_ = r.Close()
}
func TestEstablishConnectionReadError(t *testing.T) {
s := newServer()
defer s.Close()
r, w := net.Pipe()
o := make(chan error)
go func() {
o <- s.EstablishConnection("tcp", r)
}()
go func() {
_, _ = w.Write(packets.TPacketData[packets.Connect].Get(packets.TConnectMqtt5).RawBytes)
_, _ = w.Write(packets.TPacketData[packets.Connect].Get(packets.TConnectClean).RawBytes) // second connect error
}()
// receive the connack
recv := make(chan []byte)
go func() {
buf, err := io.ReadAll(w)
require.NoError(t, err)
recv <- buf
}()
err := <-o
require.Error(t, err)
// Retrieve the client corresponding to the Client Identifier.
retrievedCl, ok := s.Clients.Get(packets.TPacketData[packets.Connect].Get(packets.TConnectMqtt5).Packet.Connect.ClientIdentifier)
require.True(t, ok)
require.ErrorIs(t, retrievedCl.StopCause(), packets.ErrProtocolViolationSecondConnect) // true error is disconnect
ret := <-recv
require.Equal(t, append(
packets.TPacketData[packets.Connack].Get(packets.TConnackMinCleanMqtt5).RawBytes,
packets.TPacketData[packets.Disconnect].Get(packets.TDisconnectSecondConnect).RawBytes...),
ret,
)
_ = w.Close()
_ = r.Close()
}
func TestEstablishConnectionInheritExisting(t *testing.T) {
s := newServer()
defer s.Close()
cl, r0, _ := newTestClient()
cl.Properties.ProtocolVersion = 5
cl.Properties.Username = []byte("mochi")
cl.ID = packets.TPacketData[packets.Connect].Get(packets.TConnectMqtt311).Packet.Connect.ClientIdentifier
cl.State.Subscriptions.Add("a/b/c", packets.Subscription{Filter: "a/b/c", Qos: 1})
cl.State.Inflight.Set(*packets.TPacketData[packets.Publish].Get(packets.TPublishQos1).Packet)
s.Clients.Add(cl)
r, w := net.Pipe()
o := make(chan error)
go func() {
err := s.EstablishConnection("tcp", r)
o <- err
}()
go func() {
_, _ = w.Write(packets.TPacketData[packets.Connect].Get(packets.TConnectMqtt311).RawBytes)
time.Sleep(time.Millisecond) // we want to receive the queued inflight, so we need to wait a moment before sending the disconnect.
_, _ = w.Write(packets.TPacketData[packets.Disconnect].Get(packets.TDisconnect).RawBytes)
}()
// receive the disconnect session takeover
takeover := make(chan []byte)
go func() {
buf, err := io.ReadAll(r0)
require.NoError(t, err)
takeover <- buf
}()
// receive the connack
recv := make(chan []byte)
go func() {
buf, err := io.ReadAll(w)
require.NoError(t, err)
recv <- buf
}()
err := <-o
require.NoError(t, err)
// Retrieve the client corresponding to the Client Identifier.
retrievedCl, ok := s.Clients.Get(packets.TPacketData[packets.Connect].Get(packets.TConnectMqtt311).Packet.Connect.ClientIdentifier)
require.True(t, ok)
require.ErrorIs(t, retrievedCl.StopCause(), packets.CodeDisconnect) // true error is disconnect
connackPlusPacket := append(
packets.TPacketData[packets.Connack].Get(packets.TConnackAcceptedSessionExists).RawBytes,
packets.TPacketData[packets.Publish].Get(packets.TPublishQos1Dup).RawBytes...,
)
require.Equal(t, connackPlusPacket, <-recv)
require.Equal(t, packets.TPacketData[packets.Disconnect].Get(packets.TDisconnectTakeover).RawBytes, <-takeover)
time.Sleep(time.Microsecond * 100)
_ = w.Close()
_ = r.Close()
clw, ok := s.Clients.Get(packets.TPacketData[packets.Connect].Get(packets.TConnectMqtt311).Packet.Connect.ClientIdentifier)
require.True(t, ok)
require.NotEmpty(t, clw.State.Subscriptions)
// Prevent sequential takeover memory-bloom.
require.Empty(t, cl.State.Subscriptions.GetAll())
}
// See https://github.com/mochi-mqtt/server/issues/173
func TestEstablishConnectionInheritExistingTrueTakeover(t *testing.T) {
s := newServer()
d := new(DelayHook)
d.DisconnectDelay = time.Millisecond * 200
_ = s.AddHook(d, nil)
defer s.Close()
// Clean session, 0 session expiry interval
cl1RawBytes := []byte{
packets.Connect << 4, 21, // Fixed header
0, 4, // Protocol Name - MSB+LSB
'M', 'Q', 'T', 'T', // Protocol Name
5, // Protocol Version
1 << 1, // Packet Flags
0, 30, // Keepalive
5, // Properties length
17, 0, 0, 0, 0, // Session Expiry Interval (17)
0, 3, // Client ID - MSB+LSB
'z', 'e', 'n', // Client ID "zen"
}
// Make first connection
r1, w1 := net.Pipe()
o1 := make(chan error)
go func() {
err := s.EstablishConnection("tcp", r1)
o1 <- err
}()
go func() {
_, _ = w1.Write(cl1RawBytes)
}()
// receive the first connack
recv := make(chan []byte)
go func() {
buf, err := io.ReadAll(w1)
require.NoError(t, err)
recv <- buf
}()
// Get the first client pointer
time.Sleep(time.Millisecond * 50)
cl1, ok := s.Clients.Get(packets.TPacketData[packets.Connect].Get(packets.TConnectUserPass).Packet.Connect.ClientIdentifier)
require.True(t, ok)
cl1.State.Subscriptions.Add("a/b/c", packets.Subscription{Filter: "a/b/c", Qos: 1})
cl1.State.Subscriptions.Add("d/e/f", packets.Subscription{Filter: "d/e/f", Qos: 0})
time.Sleep(time.Millisecond * 50)
// Make the second connection
r2, w2 := net.Pipe()
o2 := make(chan error)
go func() {
err := s.EstablishConnection("tcp", r2)
o2 <- err
}()
go func() {
x := packets.TPacketData[packets.Connect].Get(packets.TConnectUserPass).RawBytes[:]
x[19] = '.' // differentiate username bytes in debugging
_, _ = w2.Write(packets.TPacketData[packets.Connect].Get(packets.TConnectUserPass).RawBytes)
}()
// receive the second connack
recv2 := make(chan []byte)
go func() {
buf, err := io.ReadAll(w2)
require.NoError(t, err)
recv2 <- buf
}()
// Capture first Client pointer
clp1, ok := s.Clients.Get("zen")
require.True(t, ok)
require.Empty(t, clp1.Properties.Username)
require.NotEmpty(t, clp1.State.Subscriptions.GetAll())
err1 := <-o1
require.Error(t, err1)
require.ErrorIs(t, err1, io.ErrClosedPipe)
// Capture second Client pointer
clp2, ok := s.Clients.Get("zen")
require.True(t, ok)
require.Equal(t, []byte(".ochi"), clp2.Properties.Username)
require.NotEmpty(t, clp2.State.Subscriptions.GetAll())
require.Empty(t, clp1.State.Subscriptions.GetAll())
_, _ = w2.Write(packets.TPacketData[packets.Disconnect].Get(packets.TDisconnect).RawBytes)
require.NoError(t, <-o2)
}
func TestEstablishConnectionResentPendingInflightsError(t *testing.T) {
s := newServer()
defer s.Close()
n := time.Now().Unix()
cl, r0, _ := newTestClient()
cl.Properties.ProtocolVersion = 5
cl.ID = packets.TPacketData[packets.Connect].Get(packets.TConnectMqtt311).Packet.Connect.ClientIdentifier
cl.State.Inflight = NewInflights()
cl.State.Inflight.Set(packets.Packet{PacketID: 2, Created: n - 2}) // no packet type
s.Clients.Add(cl)
r, w := net.Pipe()
o := make(chan error)
go func() {
o <- s.EstablishConnection("tcp", r)
}()
go func() {
_, _ = w.Write(packets.TPacketData[packets.Connect].Get(packets.TConnectMqtt311).RawBytes)
}()
go func() {
_, err := io.ReadAll(r0)
require.NoError(t, err)
}()
go func() {
_, err := io.ReadAll(w)
require.NoError(t, err)
}()
err := <-o
require.Error(t, err)
require.ErrorIs(t, err, packets.ErrNoValidPacketAvailable)
}
func TestEstablishConnectionInheritExistingClean(t *testing.T) {
s := newServer()
defer s.Close()
cl, r0, _ := newTestClient()
cl.ID = packets.TPacketData[packets.Connect].Get(packets.TConnectMqtt311).Packet.Connect.ClientIdentifier
cl.Properties.Clean = true
cl.State.Subscriptions.Add("a/b/c", packets.Subscription{Filter: "a/b/c", Qos: 1})
s.Clients.Add(cl)
r, w := net.Pipe()
o := make(chan error)
go func() {
o <- s.EstablishConnection("tcp", r)
}()
go func() {
_, _ = w.Write(packets.TPacketData[packets.Connect].Get(packets.TConnectMqtt311).RawBytes)
_, _ = w.Write(packets.TPacketData[packets.Disconnect].Get(packets.TDisconnect).RawBytes)
}()
// receive the disconnect
takeover := make(chan []byte)
go func() {
buf, err := io.ReadAll(r0)
require.NoError(t, err)
takeover <- buf
}()
// receive the connack
recv := make(chan []byte)
go func() {
buf, err := io.ReadAll(w)
require.NoError(t, err)
recv <- buf
}()
err := <-o
require.NoError(t, err)
// Retrieve the client corresponding to the Client Identifier.
retrievedCl, ok := s.Clients.Get(packets.TPacketData[packets.Connect].Get(packets.TConnectMqtt311).Packet.Connect.ClientIdentifier)
require.True(t, ok)
require.ErrorIs(t, retrievedCl.StopCause(), packets.CodeDisconnect) // true error is disconnect
require.Equal(t, packets.TPacketData[packets.Connack].Get(packets.TConnackAcceptedNoSession).RawBytes, <-recv)
require.Equal(t, packets.TPacketData[packets.Disconnect].Get(packets.TDisconnect).RawBytes, <-takeover)
_ = w.Close()
_ = r.Close()
clw, ok := s.Clients.Get(packets.TPacketData[packets.Connect].Get(packets.TConnectMqtt311).Packet.Connect.ClientIdentifier)
require.True(t, ok)
require.Equal(t, 0, clw.State.Subscriptions.Len())
}
func TestEstablishConnectionBadAuthentication(t *testing.T) {
s := New(&Options{
Logger: logger,
})
defer s.Close()
r, w := net.Pipe()
o := make(chan error)
go func() {
o <- s.EstablishConnection("tcp", r)
}()
go func() {
_, _ = w.Write(packets.TPacketData[packets.Connect].Get(packets.TConnectClean).RawBytes)
_, _ = w.Write(packets.TPacketData[packets.Disconnect].Get(packets.TDisconnect).RawBytes)
}()
// receive the connack
recv := make(chan []byte)
go func() {
buf, err := io.ReadAll(w)
require.NoError(t, err)
recv <- buf
}()
err := <-o
require.Error(t, err)
require.ErrorIs(t, err, packets.ErrBadUsernameOrPassword)
require.Equal(t, packets.TPacketData[packets.Connack].Get(packets.TConnackBadUsernamePasswordNoSession).RawBytes, <-recv)
_ = w.Close()
_ = r.Close()
}
func TestEstablishConnectionBadAuthenticationAckFailure(t *testing.T) {
s := New(&Options{
Logger: logger,
})
defer s.Close()
r, w := net.Pipe()
o := make(chan error)
go func() {
o <- s.EstablishConnection("tcp", r)
}()
go func() {
_, _ = w.Write(packets.TPacketData[packets.Connect].Get(packets.TConnectClean).RawBytes)
_ = w.Close()
}()
err := <-o
require.Error(t, err)
require.ErrorIs(t, err, io.ErrClosedPipe)
_ = r.Close()
}
func TestServerEstablishConnectionInvalidConnect(t *testing.T) {
s := newServer()
r, w := net.Pipe()
o := make(chan error)
go func() {
o <- s.EstablishConnection("tcp", r)
}()
go func() {
_, _ = w.Write(packets.TPacketData[packets.Connect].Get(packets.TConnectMalReservedBit).RawBytes)
_, _ = w.Write(packets.TPacketData[packets.Disconnect].Get(packets.TDisconnect).RawBytes)
}()
// receive the connack
recv := make(chan []byte)
go func() {
buf, err := io.ReadAll(w)
require.NoError(t, err)
recv <- buf
}()
err := <-o
require.Error(t, err)
require.ErrorIs(t, packets.ErrProtocolViolationReservedBit, err)
require.Equal(t, packets.TPacketData[packets.Connack].Get(packets.TConnackProtocolViolationNoSession).RawBytes, <-recv)
_ = r.Close()
}
// See https://github.com/mochi-mqtt/server/issues/178
func TestServerEstablishConnectionZeroByteUsernameIsValid(t *testing.T) {
s := newServer()
r, w := net.Pipe()
o := make(chan error)
go func() {
o <- s.EstablishConnection("tcp", r)
}()
go func() {
_, _ = w.Write(packets.TPacketData[packets.Connect].Get(packets.TConnectZeroByteUsername).RawBytes)
_, _ = w.Write(packets.TPacketData[packets.Disconnect].Get(packets.TDisconnect).RawBytes)
}()
// receive the connack error
go func() {
_, err := io.ReadAll(w)
require.NoError(t, err)
}()
err := <-o
require.NoError(t, err)
_ = r.Close()
}
func TestServerEstablishConnectionInvalidConnectAckFailure(t *testing.T) {
s := newServer()
r, w := net.Pipe()
o := make(chan error)
go func() {
o <- s.EstablishConnection("tcp", r)
}()
go func() {
_, _ = w.Write(packets.TPacketData[packets.Connect].Get(packets.TConnectMalReservedBit).RawBytes)
_ = w.Close()
}()
err := <-o
require.Error(t, err)
require.ErrorIs(t, err, io.ErrClosedPipe)
_ = r.Close()
}
func TestServerEstablishConnectionBadPacket(t *testing.T) {
s := newServer()
r, w := net.Pipe()
o := make(chan error)
go func() {
o <- s.EstablishConnection("tcp", r)
}()
go func() {
_, _ = w.Write(packets.TPacketData[packets.Connect].Get(packets.TConnackBadProtocolVersion).RawBytes)
_, _ = w.Write(packets.TPacketData[packets.Disconnect].Get(packets.TDisconnect).RawBytes)
}()
err := <-o
require.Error(t, err)
require.ErrorIs(t, err, packets.ErrProtocolViolationRequireFirstConnect)
_ = r.Close()
}
func TestServerEstablishConnectionOnConnectError(t *testing.T) {
s := newServer()
hook := new(modifiedHookBase)
hook.fail = true
err := s.AddHook(hook, nil)
require.NoError(t, err)
r, w := net.Pipe()
o := make(chan error)
go func() {
o <- s.EstablishConnection("tcp", r)
}()
go func() {
_, _ = w.Write(packets.TPacketData[packets.Connect].Get(packets.TConnectClean).RawBytes)
}()
err = <-o
require.Error(t, err)
require.ErrorIs(t, err, errTestHook)
_ = r.Close()
}
func TestServerSendConnack(t *testing.T) {
s := newServer()
cl, r, w := newTestClient()
cl.Properties.ProtocolVersion = 5
s.Options.Capabilities.MaximumQos = 1
cl.Properties.Props = packets.Properties{
AssignedClientID: "mochi",
}
go func() {
err := s.SendConnack(cl, packets.CodeSuccess, true, nil)
require.NoError(t, err)
_ = w.Close()
}()
buf, err := io.ReadAll(r)
require.NoError(t, err)
require.Equal(t, packets.TPacketData[packets.Connack].Get(packets.TConnackMinMqtt5).RawBytes, buf)
}
func TestServerSendConnackFailureReason(t *testing.T) {
s := newServer()
cl, r, w := newTestClient()
cl.Properties.ProtocolVersion = 5
go func() {
err := s.SendConnack(cl, packets.ErrUnspecifiedError, true, nil)
require.NoError(t, err)
_ = w.Close()
}()
buf, err := io.ReadAll(r)
require.NoError(t, err)
require.Equal(t, packets.TPacketData[packets.Connack].Get(packets.TConnackInvalidMinMqtt5).RawBytes, buf)
}
func TestServerSendConnackWithServerKeepalive(t *testing.T) {
s := newServer()
cl, r, w := newTestClient()
cl.Properties.ProtocolVersion = 5
cl.State.Keepalive = 10
cl.State.ServerKeepalive = true
go func() {
err := s.SendConnack(cl, packets.CodeSuccess, true, nil)
require.NoError(t, err)
_ = w.Close()
}()
buf, err := io.ReadAll(r)
require.NoError(t, err)
require.Equal(t, packets.TPacketData[packets.Connack].Get(packets.TConnackServerKeepalive).RawBytes, buf)
}
func TestServerValidateConnect(t *testing.T) {
packet := *packets.TPacketData[packets.Connect].Get(packets.TConnectMqtt5).Packet
invalidBitPacket := packet
invalidBitPacket.ReservedBit = 1
packetCleanIdPacket := packet
packetCleanIdPacket.Connect.Clean = false
packetCleanIdPacket.Connect.ClientIdentifier = ""
tt := []struct {
desc string
client *Client
capabilities Capabilities
packet packets.Packet
expect packets.Code
}{
{
desc: "unsupported protocol version",
client: &Client{Properties: ClientProperties{ProtocolVersion: 3}},
capabilities: Capabilities{MinimumProtocolVersion: 4},
packet: packet,
expect: packets.ErrUnsupportedProtocolVersion,
},
{
desc: "will qos not supported",
client: &Client{Properties: ClientProperties{Will: Will{Qos: 2}}},
capabilities: Capabilities{MaximumQos: 1},
packet: packet,
expect: packets.ErrQosNotSupported,
},
{
desc: "retain not supported",
client: &Client{Properties: ClientProperties{Will: Will{Retain: true}}},
capabilities: Capabilities{RetainAvailable: 0},
packet: packet,
expect: packets.ErrRetainNotSupported,
},
{
desc: "invalid packet validate",
client: &Client{Properties: ClientProperties{Will: Will{Retain: true}}},
capabilities: Capabilities{RetainAvailable: 0},
packet: invalidBitPacket,
expect: packets.ErrProtocolViolationReservedBit,
},
{