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333 lines
8.7 KiB
333 lines
8.7 KiB
package p2p
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import (
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"bytes"
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"fmt"
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"net"
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"sync"
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"testing"
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"time"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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crypto "github.com/tendermint/go-crypto"
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wire "github.com/tendermint/go-wire"
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cfg "github.com/tendermint/tendermint/config"
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"github.com/tendermint/tmlibs/log"
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)
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var (
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config *cfg.P2PConfig
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)
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func init() {
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config = cfg.DefaultP2PConfig()
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config.PexReactor = true
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}
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type PeerMessage struct {
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PeerKey string
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Bytes []byte
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Counter int
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}
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type TestReactor struct {
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BaseReactor
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mtx sync.Mutex
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channels []*ChannelDescriptor
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peersAdded []Peer
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peersRemoved []Peer
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logMessages bool
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msgsCounter int
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msgsReceived map[byte][]PeerMessage
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}
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func NewTestReactor(channels []*ChannelDescriptor, logMessages bool) *TestReactor {
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tr := &TestReactor{
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channels: channels,
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logMessages: logMessages,
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msgsReceived: make(map[byte][]PeerMessage),
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}
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tr.BaseReactor = *NewBaseReactor("TestReactor", tr)
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tr.SetLogger(log.TestingLogger())
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return tr
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}
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func (tr *TestReactor) GetChannels() []*ChannelDescriptor {
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return tr.channels
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}
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func (tr *TestReactor) AddPeer(peer Peer) {
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tr.mtx.Lock()
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defer tr.mtx.Unlock()
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tr.peersAdded = append(tr.peersAdded, peer)
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}
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func (tr *TestReactor) RemovePeer(peer Peer, reason interface{}) {
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tr.mtx.Lock()
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defer tr.mtx.Unlock()
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tr.peersRemoved = append(tr.peersRemoved, peer)
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}
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func (tr *TestReactor) Receive(chID byte, peer Peer, msgBytes []byte) {
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if tr.logMessages {
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tr.mtx.Lock()
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defer tr.mtx.Unlock()
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//fmt.Printf("Received: %X, %X\n", chID, msgBytes)
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tr.msgsReceived[chID] = append(tr.msgsReceived[chID], PeerMessage{peer.Key(), msgBytes, tr.msgsCounter})
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tr.msgsCounter++
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}
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}
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func (tr *TestReactor) getMsgs(chID byte) []PeerMessage {
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tr.mtx.Lock()
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defer tr.mtx.Unlock()
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return tr.msgsReceived[chID]
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}
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//-----------------------------------------------------------------------------
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// convenience method for creating two switches connected to each other.
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// XXX: note this uses net.Pipe and not a proper TCP conn
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func makeSwitchPair(t testing.TB, initSwitch func(int, *Switch) *Switch) (*Switch, *Switch) {
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// Create two switches that will be interconnected.
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switches := MakeConnectedSwitches(config, 2, initSwitch, Connect2Switches)
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return switches[0], switches[1]
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}
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func initSwitchFunc(i int, sw *Switch) *Switch {
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// Make two reactors of two channels each
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sw.AddReactor("foo", NewTestReactor([]*ChannelDescriptor{
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&ChannelDescriptor{ID: byte(0x00), Priority: 10},
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&ChannelDescriptor{ID: byte(0x01), Priority: 10},
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}, true))
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sw.AddReactor("bar", NewTestReactor([]*ChannelDescriptor{
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&ChannelDescriptor{ID: byte(0x02), Priority: 10},
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&ChannelDescriptor{ID: byte(0x03), Priority: 10},
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}, true))
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return sw
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}
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func TestSwitches(t *testing.T) {
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s1, s2 := makeSwitchPair(t, initSwitchFunc)
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defer s1.Stop()
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defer s2.Stop()
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if s1.Peers().Size() != 1 {
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t.Errorf("Expected exactly 1 peer in s1, got %v", s1.Peers().Size())
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}
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if s2.Peers().Size() != 1 {
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t.Errorf("Expected exactly 1 peer in s2, got %v", s2.Peers().Size())
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}
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// Lets send some messages
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ch0Msg := "channel zero"
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ch1Msg := "channel foo"
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ch2Msg := "channel bar"
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s1.Broadcast(byte(0x00), ch0Msg)
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s1.Broadcast(byte(0x01), ch1Msg)
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s1.Broadcast(byte(0x02), ch2Msg)
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assertMsgReceivedWithTimeout(t, ch0Msg, byte(0x00), s2.Reactor("foo").(*TestReactor), 10*time.Millisecond, 5*time.Second)
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assertMsgReceivedWithTimeout(t, ch1Msg, byte(0x01), s2.Reactor("foo").(*TestReactor), 10*time.Millisecond, 5*time.Second)
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assertMsgReceivedWithTimeout(t, ch2Msg, byte(0x02), s2.Reactor("bar").(*TestReactor), 10*time.Millisecond, 5*time.Second)
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}
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func assertMsgReceivedWithTimeout(t *testing.T, msg string, channel byte, reactor *TestReactor, checkPeriod, timeout time.Duration) {
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ticker := time.NewTicker(checkPeriod)
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for {
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select {
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case <-ticker.C:
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msgs := reactor.getMsgs(channel)
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if len(msgs) > 0 {
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if !bytes.Equal(msgs[0].Bytes, wire.BinaryBytes(msg)) {
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t.Fatalf("Unexpected message bytes. Wanted: %X, Got: %X", wire.BinaryBytes(msg), msgs[0].Bytes)
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}
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return
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}
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case <-time.After(timeout):
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t.Fatalf("Expected to have received 1 message in channel #%v, got zero", channel)
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}
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}
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}
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func TestConnAddrFilter(t *testing.T) {
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s1 := makeSwitch(config, 1, "testing", "123.123.123", initSwitchFunc)
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s2 := makeSwitch(config, 1, "testing", "123.123.123", initSwitchFunc)
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defer s1.Stop()
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defer s2.Stop()
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c1, c2 := netPipe()
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s1.SetAddrFilter(func(addr net.Addr) error {
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if addr.String() == c1.RemoteAddr().String() {
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return fmt.Errorf("Error: pipe is blacklisted")
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}
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return nil
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})
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// connect to good peer
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go func() {
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s1.addPeerWithConnection(c1)
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}()
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go func() {
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s2.addPeerWithConnection(c2)
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}()
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assertNoPeersAfterTimeout(t, s1, 400*time.Millisecond)
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assertNoPeersAfterTimeout(t, s2, 400*time.Millisecond)
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}
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func assertNoPeersAfterTimeout(t *testing.T, sw *Switch, timeout time.Duration) {
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time.Sleep(timeout)
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if sw.Peers().Size() != 0 {
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t.Fatalf("Expected %v to not connect to some peers, got %d", sw, sw.Peers().Size())
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}
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}
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func TestConnPubKeyFilter(t *testing.T) {
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s1 := makeSwitch(config, 1, "testing", "123.123.123", initSwitchFunc)
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s2 := makeSwitch(config, 1, "testing", "123.123.123", initSwitchFunc)
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defer s1.Stop()
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defer s2.Stop()
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c1, c2 := netPipe()
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// set pubkey filter
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s1.SetPubKeyFilter(func(pubkey crypto.PubKeyEd25519) error {
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if bytes.Equal(pubkey.Bytes(), s2.nodeInfo.PubKey.Bytes()) {
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return fmt.Errorf("Error: pipe is blacklisted")
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}
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return nil
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})
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// connect to good peer
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go func() {
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s1.addPeerWithConnection(c1)
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}()
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go func() {
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s2.addPeerWithConnection(c2)
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}()
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assertNoPeersAfterTimeout(t, s1, 400*time.Millisecond)
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assertNoPeersAfterTimeout(t, s2, 400*time.Millisecond)
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}
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func TestSwitchStopsNonPersistentPeerOnError(t *testing.T) {
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assert, require := assert.New(t), require.New(t)
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sw := makeSwitch(config, 1, "testing", "123.123.123", initSwitchFunc)
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sw.Start()
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defer sw.Stop()
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// simulate remote peer
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rp := &remotePeer{PrivKey: crypto.GenPrivKeyEd25519(), Config: DefaultPeerConfig()}
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rp.Start()
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defer rp.Stop()
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peer, err := newOutboundPeer(rp.Addr(), sw.reactorsByCh, sw.chDescs, sw.StopPeerForError, sw.nodePrivKey, DefaultPeerConfig())
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require.Nil(err)
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err = sw.addPeer(peer)
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require.Nil(err)
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// simulate failure by closing connection
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peer.CloseConn()
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assertNoPeersAfterTimeout(t, sw, 100*time.Millisecond)
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assert.False(peer.IsRunning())
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}
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func TestSwitchReconnectsToPersistentPeer(t *testing.T) {
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assert, require := assert.New(t), require.New(t)
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sw := makeSwitch(config, 1, "testing", "123.123.123", initSwitchFunc)
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sw.Start()
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defer sw.Stop()
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// simulate remote peer
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rp := &remotePeer{PrivKey: crypto.GenPrivKeyEd25519(), Config: DefaultPeerConfig()}
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rp.Start()
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defer rp.Stop()
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peer, err := newOutboundPeer(rp.Addr(), sw.reactorsByCh, sw.chDescs, sw.StopPeerForError, sw.nodePrivKey, DefaultPeerConfig())
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peer.makePersistent()
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require.Nil(err)
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err = sw.addPeer(peer)
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require.Nil(err)
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// simulate failure by closing connection
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peer.CloseConn()
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// TODO: actually detect the disconnection and wait for reconnect
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npeers := sw.Peers().Size()
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for i := 0; i < 20; i++ {
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time.Sleep(100 * time.Millisecond)
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npeers = sw.Peers().Size()
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if npeers > 0 {
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break
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}
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}
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assert.NotZero(npeers)
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assert.False(peer.IsRunning())
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}
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func TestSwitchFullConnectivity(t *testing.T) {
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switches := MakeConnectedSwitches(config, 3, initSwitchFunc, Connect2Switches)
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defer func() {
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for _, sw := range switches {
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sw.Stop()
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}
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}()
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for i, sw := range switches {
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if sw.Peers().Size() != 2 {
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t.Fatalf("Expected each switch to be connected to 2 other, but %d switch only connected to %d", sw.Peers().Size(), i)
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}
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}
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}
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func BenchmarkSwitches(b *testing.B) {
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b.StopTimer()
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s1, s2 := makeSwitchPair(b, func(i int, sw *Switch) *Switch {
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// Make bar reactors of bar channels each
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sw.AddReactor("foo", NewTestReactor([]*ChannelDescriptor{
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&ChannelDescriptor{ID: byte(0x00), Priority: 10},
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&ChannelDescriptor{ID: byte(0x01), Priority: 10},
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}, false))
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sw.AddReactor("bar", NewTestReactor([]*ChannelDescriptor{
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&ChannelDescriptor{ID: byte(0x02), Priority: 10},
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&ChannelDescriptor{ID: byte(0x03), Priority: 10},
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}, false))
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return sw
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})
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defer s1.Stop()
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defer s2.Stop()
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// Allow time for goroutines to boot up
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time.Sleep(1 * time.Second)
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b.StartTimer()
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numSuccess, numFailure := 0, 0
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// Send random message from foo channel to another
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for i := 0; i < b.N; i++ {
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chID := byte(i % 4)
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successChan := s1.Broadcast(chID, "test data")
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for s := range successChan {
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if s {
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numSuccess++
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} else {
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numFailure++
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}
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}
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}
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b.Logf("success: %v, failure: %v", numSuccess, numFailure)
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// Allow everything to flush before stopping switches & closing connections.
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b.StopTimer()
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}
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