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345 lines
9.6 KiB
345 lines
9.6 KiB
package p2p
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import (
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"fmt"
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"io/ioutil"
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"math/rand"
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"os"
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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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cmn "github.com/tendermint/tmlibs/common"
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"github.com/tendermint/tmlibs/log"
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)
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func TestPEXReactorBasic(t *testing.T) {
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assert, require := assert.New(t), require.New(t)
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dir, err := ioutil.TempDir("", "pex_reactor")
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require.Nil(err)
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defer os.RemoveAll(dir) // nolint: errcheck
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book := NewAddrBook(dir+"addrbook.json", true)
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book.SetLogger(log.TestingLogger())
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r := NewPEXReactor(book, &PEXReactorConfig{})
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r.SetLogger(log.TestingLogger())
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assert.NotNil(r)
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assert.NotEmpty(r.GetChannels())
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}
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func TestPEXReactorAddRemovePeer(t *testing.T) {
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assert, require := assert.New(t), require.New(t)
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dir, err := ioutil.TempDir("", "pex_reactor")
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require.Nil(err)
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defer os.RemoveAll(dir) // nolint: errcheck
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book := NewAddrBook(dir+"addrbook.json", true)
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book.SetLogger(log.TestingLogger())
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r := NewPEXReactor(book, &PEXReactorConfig{})
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r.SetLogger(log.TestingLogger())
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size := book.Size()
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peer := createRandomPeer(false)
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r.AddPeer(peer)
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assert.Equal(size+1, book.Size())
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r.RemovePeer(peer, "peer not available")
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assert.Equal(size+1, book.Size())
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outboundPeer := createRandomPeer(true)
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r.AddPeer(outboundPeer)
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assert.Equal(size+1, book.Size(), "outbound peers should not be added to the address book")
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r.RemovePeer(outboundPeer, "peer not available")
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assert.Equal(size+1, book.Size())
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}
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func TestPEXReactorRunning(t *testing.T) {
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N := 3
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switches := make([]*Switch, N)
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dir, err := ioutil.TempDir("", "pex_reactor")
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require.Nil(t, err)
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defer os.RemoveAll(dir) // nolint: errcheck
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book := NewAddrBook(dir+"addrbook.json", false)
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book.SetLogger(log.TestingLogger())
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// create switches
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for i := 0; i < N; i++ {
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switches[i] = makeSwitch(config, i, "127.0.0.1", "123.123.123", func(i int, sw *Switch) *Switch {
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sw.SetLogger(log.TestingLogger().With("switch", i))
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r := NewPEXReactor(book, &PEXReactorConfig{})
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r.SetLogger(log.TestingLogger())
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r.SetEnsurePeersPeriod(250 * time.Millisecond)
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sw.AddReactor("pex", r)
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return sw
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})
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}
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// fill the address book and add listeners
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for _, s := range switches {
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addr, _ := NewNetAddressString(s.NodeInfo().ListenAddr)
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book.AddAddress(addr, addr)
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s.AddListener(NewDefaultListener("tcp", s.NodeInfo().ListenAddr, true, log.TestingLogger()))
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}
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// start switches
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for _, s := range switches {
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err := s.Start() // start switch and reactors
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require.Nil(t, err)
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}
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assertSomePeersWithTimeout(t, switches, 10*time.Millisecond, 10*time.Second)
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// stop them
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for _, s := range switches {
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s.Stop()
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}
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}
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func assertSomePeersWithTimeout(t *testing.T, switches []*Switch, checkPeriod, timeout time.Duration) {
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ticker := time.NewTicker(checkPeriod)
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remaining := timeout
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for {
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select {
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case <-ticker.C:
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// check peers are connected
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allGood := true
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for _, s := range switches {
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outbound, inbound, _ := s.NumPeers()
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if outbound+inbound == 0 {
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allGood = false
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}
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}
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remaining -= checkPeriod
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if remaining < 0 {
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remaining = 0
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}
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if allGood {
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return
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}
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case <-time.After(remaining):
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numPeersStr := ""
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for i, s := range switches {
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outbound, inbound, _ := s.NumPeers()
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numPeersStr += fmt.Sprintf("%d => {outbound: %d, inbound: %d}, ", i, outbound, inbound)
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}
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t.Errorf("expected all switches to be connected to at least one peer (switches: %s)", numPeersStr)
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return
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}
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}
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}
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func TestPEXReactorReceive(t *testing.T) {
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assert, require := assert.New(t), require.New(t)
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dir, err := ioutil.TempDir("", "pex_reactor")
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require.Nil(err)
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defer os.RemoveAll(dir) // nolint: errcheck
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book := NewAddrBook(dir+"addrbook.json", false)
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book.SetLogger(log.TestingLogger())
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r := NewPEXReactor(book, &PEXReactorConfig{})
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r.SetLogger(log.TestingLogger())
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peer := createRandomPeer(false)
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// we have to send a request to receive responses
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r.RequestPEX(peer)
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size := book.Size()
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addrs := []*NetAddress{peer.NodeInfo().NetAddress()}
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msg := wire.BinaryBytes(struct{ PexMessage }{&pexAddrsMessage{Addrs: addrs}})
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r.Receive(PexChannel, peer, msg)
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assert.Equal(size+1, book.Size())
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msg = wire.BinaryBytes(struct{ PexMessage }{&pexRequestMessage{}})
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r.Receive(PexChannel, peer, msg)
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}
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func TestPEXReactorRequestMessageAbuse(t *testing.T) {
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assert, require := assert.New(t), require.New(t)
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dir, err := ioutil.TempDir("", "pex_reactor")
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require.Nil(err)
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defer os.RemoveAll(dir) // nolint: errcheck
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book := NewAddrBook(dir+"addrbook.json", true)
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book.SetLogger(log.TestingLogger())
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r := NewPEXReactor(book, &PEXReactorConfig{})
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sw := makeSwitch(config, 0, "127.0.0.1", "123.123.123", func(i int, sw *Switch) *Switch { return sw })
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sw.SetLogger(log.TestingLogger())
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sw.AddReactor("PEX", r)
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r.SetSwitch(sw)
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r.SetLogger(log.TestingLogger())
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peer := newMockPeer()
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sw.peers.Add(peer)
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assert.True(sw.Peers().Has(peer.ID()))
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id := string(peer.ID())
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msg := wire.BinaryBytes(struct{ PexMessage }{&pexRequestMessage{}})
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// first time creates the entry
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r.Receive(PexChannel, peer, msg)
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assert.True(r.lastReceivedRequests.Has(id))
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assert.True(sw.Peers().Has(peer.ID()))
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// next time sets the last time value
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r.Receive(PexChannel, peer, msg)
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assert.True(r.lastReceivedRequests.Has(id))
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assert.True(sw.Peers().Has(peer.ID()))
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// third time is too many too soon - peer is removed
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r.Receive(PexChannel, peer, msg)
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assert.False(r.lastReceivedRequests.Has(id))
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assert.False(sw.Peers().Has(peer.ID()))
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}
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func TestPEXReactorAddrsMessageAbuse(t *testing.T) {
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assert, require := assert.New(t), require.New(t)
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dir, err := ioutil.TempDir("", "pex_reactor")
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require.Nil(err)
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defer os.RemoveAll(dir) // nolint: errcheck
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book := NewAddrBook(dir+"addrbook.json", true)
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book.SetLogger(log.TestingLogger())
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r := NewPEXReactor(book, &PEXReactorConfig{})
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sw := makeSwitch(config, 0, "127.0.0.1", "123.123.123", func(i int, sw *Switch) *Switch { return sw })
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sw.SetLogger(log.TestingLogger())
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sw.AddReactor("PEX", r)
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r.SetSwitch(sw)
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r.SetLogger(log.TestingLogger())
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peer := newMockPeer()
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sw.peers.Add(peer)
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assert.True(sw.Peers().Has(peer.ID()))
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id := string(peer.ID())
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// request addrs from the peer
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r.RequestPEX(peer)
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assert.True(r.requestsSent.Has(id))
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assert.True(sw.Peers().Has(peer.ID()))
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addrs := []*NetAddress{peer.NodeInfo().NetAddress()}
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msg := wire.BinaryBytes(struct{ PexMessage }{&pexAddrsMessage{Addrs: addrs}})
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// receive some addrs. should clear the request
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r.Receive(PexChannel, peer, msg)
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assert.False(r.requestsSent.Has(id))
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assert.True(sw.Peers().Has(peer.ID()))
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// receiving more addrs causes a disconnect
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r.Receive(PexChannel, peer, msg)
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assert.False(sw.Peers().Has(peer.ID()))
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}
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func TestPEXReactorUsesSeedsIfNeeded(t *testing.T) {
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dir, err := ioutil.TempDir("", "pex_reactor")
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require.Nil(t, err)
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defer os.RemoveAll(dir) // nolint: errcheck
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book := NewAddrBook(dir+"addrbook.json", false)
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book.SetLogger(log.TestingLogger())
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// 1. create seed
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seed := makeSwitch(config, 0, "127.0.0.1", "123.123.123", func(i int, sw *Switch) *Switch {
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sw.SetLogger(log.TestingLogger())
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r := NewPEXReactor(book, &PEXReactorConfig{})
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r.SetLogger(log.TestingLogger())
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r.SetEnsurePeersPeriod(250 * time.Millisecond)
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sw.AddReactor("pex", r)
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return sw
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})
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seed.AddListener(NewDefaultListener("tcp", seed.NodeInfo().ListenAddr, true, log.TestingLogger()))
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err = seed.Start()
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require.Nil(t, err)
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defer seed.Stop()
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// 2. create usual peer
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sw := makeSwitch(config, 1, "127.0.0.1", "123.123.123", func(i int, sw *Switch) *Switch {
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sw.SetLogger(log.TestingLogger())
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r := NewPEXReactor(book, &PEXReactorConfig{Seeds: []string{seed.NodeInfo().ListenAddr}})
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r.SetLogger(log.TestingLogger())
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r.SetEnsurePeersPeriod(250 * time.Millisecond)
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sw.AddReactor("pex", r)
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return sw
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})
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err = sw.Start()
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require.Nil(t, err)
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defer sw.Stop()
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// 3. check that peer at least connects to seed
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assertSomePeersWithTimeout(t, []*Switch{sw}, 10*time.Millisecond, 10*time.Second)
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}
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func createRoutableAddr() (addr string, netAddr *NetAddress) {
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for {
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addr = cmn.Fmt("%v.%v.%v.%v:46656", rand.Int()%256, rand.Int()%256, rand.Int()%256, rand.Int()%256)
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netAddr, _ = NewNetAddressString(addr)
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if netAddr.Routable() {
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break
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}
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}
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return
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}
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func createRandomPeer(outbound bool) *peer {
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addr, netAddr := createRoutableAddr()
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p := &peer{
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nodeInfo: NodeInfo{
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ListenAddr: netAddr.String(),
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PubKey: crypto.GenPrivKeyEd25519().Wrap().PubKey(),
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},
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outbound: outbound,
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mconn: &MConnection{},
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}
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p.SetLogger(log.TestingLogger().With("peer", addr))
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return p
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}
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type mockPeer struct {
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*cmn.BaseService
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pubKey crypto.PubKey
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addr *NetAddress
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outbound, persistent bool
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}
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func newMockPeer() mockPeer {
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_, netAddr := createRoutableAddr()
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mp := mockPeer{
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addr: netAddr,
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pubKey: crypto.GenPrivKeyEd25519().Wrap().PubKey(),
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}
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mp.BaseService = cmn.NewBaseService(nil, "MockPeer", mp)
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mp.Start()
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return mp
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}
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func (mp mockPeer) ID() ID { return PubKeyToID(mp.pubKey) }
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func (mp mockPeer) IsOutbound() bool { return mp.outbound }
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func (mp mockPeer) IsPersistent() bool { return mp.persistent }
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func (mp mockPeer) NodeInfo() NodeInfo {
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return NodeInfo{
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PubKey: mp.pubKey,
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ListenAddr: mp.addr.DialString(),
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}
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}
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func (mp mockPeer) Status() ConnectionStatus { return ConnectionStatus{} }
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func (mp mockPeer) Send(byte, interface{}) bool { return false }
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func (mp mockPeer) TrySend(byte, interface{}) bool { return false }
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func (mp mockPeer) Set(string, interface{}) {}
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func (mp mockPeer) Get(string) interface{} { return nil }
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