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package p2p
import (
"fmt"
"math/rand"
"net"
"reflect"
"runtime"
"strings"
"testing"
"time"
"github.com/tendermint/tendermint/crypto/ed25519"
"github.com/tendermint/tendermint/p2p/conn"
)
var defaultNodeName = "host_peer"
func emptyNodeInfo() NodeInfo {
return DefaultNodeInfo{}
}
// newMultiplexTransport returns a tcp connected multiplexed peer
// using the default MConnConfig. It's a convenience function used
// for testing.
func newMultiplexTransport(
nodeInfo NodeInfo,
nodeKey NodeKey,
) *MultiplexTransport {
return NewMultiplexTransport(
nodeInfo, nodeKey, conn.DefaultMConnConfig(),
)
}
func TestTransportMultiplexConnFilter(t *testing.T) {
mt := newMultiplexTransport(
emptyNodeInfo(),
NodeKey{
PrivKey: ed25519.GenPrivKey(),
},
)
id := mt.nodeKey.ID()
MultiplexTransportConnFilters(
func(_ ConnSet, _ net.Conn, _ []net.IP) error { return nil },
func(_ ConnSet, _ net.Conn, _ []net.IP) error { return nil },
func(_ ConnSet, _ net.Conn, _ []net.IP) error {
return fmt.Errorf("rejected")
},
)(mt)
addr, err := NewNetAddressString(IDAddressString(id, "127.0.0.1:0"))
if err != nil {
t.Fatal(err)
}
if err := mt.Listen(*addr); err != nil {
t.Fatal(err)
}
errc := make(chan error)
go func() {
addr := NewNetAddress(id, mt.listener.Addr())
_, err := addr.Dial()
if err != nil {
errc <- err
return
}
close(errc)
}()
if err := <-errc; err != nil {
t.Errorf("connection failed: %v", err)
}
_, err = mt.Accept(peerConfig{})
if err, ok := err.(ErrRejected); ok {
if !err.IsFiltered() {
t.Errorf("expected peer to be filtered, got %v", err)
}
} else {
t.Errorf("expected ErrRejected, got %v", err)
}
}
func TestTransportMultiplexConnFilterTimeout(t *testing.T) {
mt := newMultiplexTransport(
emptyNodeInfo(),
NodeKey{
PrivKey: ed25519.GenPrivKey(),
},
)
id := mt.nodeKey.ID()
MultiplexTransportFilterTimeout(5 * time.Millisecond)(mt)
MultiplexTransportConnFilters(
func(_ ConnSet, _ net.Conn, _ []net.IP) error {
time.Sleep(1 * time.Second)
return nil
},
)(mt)
addr, err := NewNetAddressString(IDAddressString(id, "127.0.0.1:0"))
if err != nil {
t.Fatal(err)
}
if err := mt.Listen(*addr); err != nil {
t.Fatal(err)
}
errc := make(chan error)
go func() {
addr := NewNetAddress(id, mt.listener.Addr())
_, err := addr.Dial()
if err != nil {
errc <- err
return
}
close(errc)
}()
if err := <-errc; err != nil {
t.Errorf("connection failed: %v", err)
}
_, err = mt.Accept(peerConfig{})
if _, ok := err.(ErrFilterTimeout); !ok {
t.Errorf("expected ErrFilterTimeout, got %v", err)
}
}
func TestTransportMultiplexMaxIncomingConnections(t *testing.T) {
mt := newMultiplexTransport(
emptyNodeInfo(),
NodeKey{
PrivKey: ed25519.GenPrivKey(),
},
)
id := mt.nodeKey.ID()
MultiplexTransportMaxIncomingConnections(0)(mt)
addr, err := NewNetAddressString(IDAddressString(id, "127.0.0.1:0"))
if err != nil {
t.Fatal(err)
}
if err := mt.Listen(*addr); err != nil {
t.Fatal(err)
}
errc := make(chan error)
go func() {
addr := NewNetAddress(id, mt.listener.Addr())
_, err := addr.Dial()
if err != nil {
errc <- err
return
}
close(errc)
}()
if err := <-errc; err != nil {
t.Errorf("connection failed: %v", err)
}
_, err = mt.Accept(peerConfig{})
if err == nil || !strings.Contains(err.Error(), "connection reset by peer") {
t.Errorf("expected connection reset by peer error, got %v", err)
}
}
func TestTransportMultiplexAcceptMultiple(t *testing.T) {
mt := testSetupMultiplexTransport(t)
laddr := NewNetAddress(mt.nodeKey.ID(), mt.listener.Addr())
var (
seed = rand.New(rand.NewSource(time.Now().UnixNano()))
nDialers = seed.Intn(64) + 64
errc = make(chan error, nDialers)
)
// Setup dialers.
for i := 0; i < nDialers; i++ {
go testDialer(*laddr, errc)
}
// Catch connection errors.
for i := 0; i < nDialers; i++ {
if err := <-errc; err != nil {
t.Fatal(err)
}
}
ps := []Peer{}
// Accept all peers.
for i := 0; i < cap(errc); i++ {
p, err := mt.Accept(peerConfig{})
if err != nil {
t.Fatal(err)
}
if err := p.Start(); err != nil {
t.Fatal(err)
}
ps = append(ps, p)
}
if have, want := len(ps), cap(errc); have != want {
t.Errorf("have %v, want %v", have, want)
}
// Stop all peers.
for _, p := range ps {
if err := p.Stop(); err != nil {
t.Fatal(err)
}
}
if err := mt.Close(); err != nil {
t.Errorf("close errored: %v", err)
}
}
func testDialer(dialAddr NetAddress, errc chan error) {
var (
pv = ed25519.GenPrivKey()
dialer = newMultiplexTransport(
testNodeInfo(PubKeyToID(pv.PubKey()), defaultNodeName),
NodeKey{
PrivKey: pv,
},
)
)
_, err := dialer.Dial(dialAddr, peerConfig{})
if err != nil {
errc <- err
return
}
// Signal that the connection was established.
errc <- nil
}
func TestTransportMultiplexAcceptNonBlocking(t *testing.T) {
mt := testSetupMultiplexTransport(t)
var (
fastNodePV = ed25519.GenPrivKey()
fastNodeInfo = testNodeInfo(PubKeyToID(fastNodePV.PubKey()), "fastnode")
errc = make(chan error)
fastc = make(chan struct{})
slowc = make(chan struct{})
slowdonec = make(chan struct{})
)
// Simulate slow Peer.
go func() {
addr := NewNetAddress(mt.nodeKey.ID(), mt.listener.Addr())
c, err := addr.Dial()
if err != nil {
errc <- err
return
}
close(slowc)
defer func() {
close(slowdonec)
}()
// Make sure we switch to fast peer goroutine.
runtime.Gosched()
select {
case <-fastc:
// Fast peer connected.
case <-time.After(200 * time.Millisecond):
// We error if the fast peer didn't succeed.
errc <- fmt.Errorf("fast peer timed out")
}
sc, err := upgradeSecretConn(c, 20*time.Millisecond, ed25519.GenPrivKey())
if err != nil {
errc <- err
return
}
_, err = handshake(sc, 20*time.Millisecond,
testNodeInfo(
PubKeyToID(ed25519.GenPrivKey().PubKey()),
"slow_peer",
))
if err != nil {
errc <- err
}
}()
// Simulate fast Peer.
go func() {
<-slowc
var (
dialer = newMultiplexTransport(
fastNodeInfo,
NodeKey{
PrivKey: fastNodePV,
},
)
)
addr := NewNetAddress(mt.nodeKey.ID(), mt.listener.Addr())
_, err := dialer.Dial(*addr, peerConfig{})
if err != nil {
errc <- err
return
}
close(fastc)
<-slowdonec
close(errc)
}()
if err := <-errc; err != nil {
t.Logf("connection failed: %v", err)
}
p, err := mt.Accept(peerConfig{})
if err != nil {
t.Fatal(err)
}
if have, want := p.NodeInfo(), fastNodeInfo; !reflect.DeepEqual(have, want) {
t.Errorf("have %v, want %v", have, want)
}
}
func TestTransportMultiplexValidateNodeInfo(t *testing.T) {
mt := testSetupMultiplexTransport(t)
errc := make(chan error)
go func() {
var (
pv = ed25519.GenPrivKey()
dialer = newMultiplexTransport(
testNodeInfo(PubKeyToID(pv.PubKey()), ""), // Should not be empty
NodeKey{
PrivKey: pv,
},
)
)
addr := NewNetAddress(mt.nodeKey.ID(), mt.listener.Addr())
_, err := dialer.Dial(*addr, peerConfig{})
if err != nil {
errc <- err
return
}
close(errc)
}()
if err := <-errc; err != nil {
t.Errorf("connection failed: %v", err)
}
_, err := mt.Accept(peerConfig{})
if err, ok := err.(ErrRejected); ok {
if !err.IsNodeInfoInvalid() {
t.Errorf("expected NodeInfo to be invalid, got %v", err)
}
} else {
t.Errorf("expected ErrRejected, got %v", err)
}
}
func TestTransportMultiplexRejectMissmatchID(t *testing.T) {
mt := testSetupMultiplexTransport(t)
errc := make(chan error)
go func() {
dialer := newMultiplexTransport(
testNodeInfo(
PubKeyToID(ed25519.GenPrivKey().PubKey()), "dialer",
),
NodeKey{
PrivKey: ed25519.GenPrivKey(),
},
)
addr := NewNetAddress(mt.nodeKey.ID(), mt.listener.Addr())
_, err := dialer.Dial(*addr, peerConfig{})
if err != nil {
errc <- err
return
}
close(errc)
}()
if err := <-errc; err != nil {
t.Errorf("connection failed: %v", err)
}
_, err := mt.Accept(peerConfig{})
if err, ok := err.(ErrRejected); ok {
if !err.IsAuthFailure() {
t.Errorf("expected auth failure, got %v", err)
}
} else {
t.Errorf("expected ErrRejected, got %v", err)
}
}
func TestTransportMultiplexDialRejectWrongID(t *testing.T) {
mt := testSetupMultiplexTransport(t)
var (
pv = ed25519.GenPrivKey()
dialer = newMultiplexTransport(
testNodeInfo(PubKeyToID(pv.PubKey()), ""), // Should not be empty
NodeKey{
PrivKey: pv,
},
)
)
wrongID := PubKeyToID(ed25519.GenPrivKey().PubKey())
addr := NewNetAddress(wrongID, mt.listener.Addr())
_, err := dialer.Dial(*addr, peerConfig{})
if err != nil {
t.Logf("connection failed: %v", err)
if err, ok := err.(ErrRejected); ok {
if !err.IsAuthFailure() {
t.Errorf("expected auth failure, got %v", err)
}
} else {
t.Errorf("expected ErrRejected, got %v", err)
}
}
}
func TestTransportMultiplexRejectIncompatible(t *testing.T) {
mt := testSetupMultiplexTransport(t)
errc := make(chan error)
go func() {
var (
pv = ed25519.GenPrivKey()
dialer = newMultiplexTransport(
testNodeInfoWithNetwork(PubKeyToID(pv.PubKey()), "dialer", "incompatible-network"),
NodeKey{
PrivKey: pv,
},
)
)
addr := NewNetAddress(mt.nodeKey.ID(), mt.listener.Addr())
_, err := dialer.Dial(*addr, peerConfig{})
if err != nil {
errc <- err
return
}
close(errc)
}()
_, err := mt.Accept(peerConfig{})
if err, ok := err.(ErrRejected); ok {
if !err.IsIncompatible() {
t.Errorf("expected to reject incompatible, got %v", err)
}
} else {
t.Errorf("expected ErrRejected, got %v", err)
}
}
func TestTransportMultiplexRejectSelf(t *testing.T) {
mt := testSetupMultiplexTransport(t)
errc := make(chan error)
go func() {
addr := NewNetAddress(mt.nodeKey.ID(), mt.listener.Addr())
_, err := mt.Dial(*addr, peerConfig{})
if err != nil {
errc <- err
return
}
close(errc)
}()
if err := <-errc; err != nil {
if err, ok := err.(ErrRejected); ok {
if !err.IsSelf() {
t.Errorf("expected to reject self, got: %v", err)
}
} else {
t.Errorf("expected ErrRejected, got %v", err)
}
} else {
t.Errorf("expected connection failure")
}
_, err := mt.Accept(peerConfig{})
if err, ok := err.(ErrRejected); ok {
if !err.IsSelf() {
t.Errorf("expected to reject self, got: %v", err)
}
} else {
t.Errorf("expected ErrRejected, got %v", nil)
}
}
func TestTransportConnDuplicateIPFilter(t *testing.T) {
filter := ConnDuplicateIPFilter()
if err := filter(nil, &testTransportConn{}, nil); err != nil {
t.Fatal(err)
}
var (
c = &testTransportConn{}
cs = NewConnSet()
)
cs.Set(c, []net.IP{
{10, 0, 10, 1},
{10, 0, 10, 2},
{10, 0, 10, 3},
})
if err := filter(cs, c, []net.IP{
{10, 0, 10, 2},
}); err == nil {
t.Errorf("expected Peer to be rejected as duplicate")
}
}
func TestTransportHandshake(t *testing.T) {
ln, err := net.Listen("tcp", "127.0.0.1:0")
if err != nil {
t.Fatal(err)
}
var (
peerPV = ed25519.GenPrivKey()
peerNodeInfo = testNodeInfo(PubKeyToID(peerPV.PubKey()), defaultNodeName)
)
go func() {
c, err := net.Dial(ln.Addr().Network(), ln.Addr().String())
if err != nil {
t.Error(err)
return
}
go func(c net.Conn) {
_, err := cdc.MarshalBinaryLengthPrefixedWriter(c, peerNodeInfo.(DefaultNodeInfo))
if err != nil {
t.Error(err)
}
}(c)
go func(c net.Conn) {
var ni DefaultNodeInfo
_, err := cdc.UnmarshalBinaryLengthPrefixedReader(
c,
&ni,
int64(MaxNodeInfoSize()),
)
if err != nil {
t.Error(err)
}
}(c)
}()
c, err := ln.Accept()
if err != nil {
t.Fatal(err)
}
ni, err := handshake(c, 20*time.Millisecond, emptyNodeInfo())
if err != nil {
t.Fatal(err)
}
if have, want := ni, peerNodeInfo; !reflect.DeepEqual(have, want) {
t.Errorf("have %v, want %v", have, want)
}
}
// create listener
func testSetupMultiplexTransport(t *testing.T) *MultiplexTransport {
var (
pv = ed25519.GenPrivKey()
id = PubKeyToID(pv.PubKey())
mt = newMultiplexTransport(
testNodeInfo(
id, "transport",
),
NodeKey{
PrivKey: pv,
},
)
)
addr, err := NewNetAddressString(IDAddressString(id, "127.0.0.1:0"))
if err != nil {
t.Fatal(err)
}
if err := mt.Listen(*addr); err != nil {
t.Fatal(err)
}
return mt
}
type testTransportAddr struct{}
func (a *testTransportAddr) Network() string { return "tcp" }
func (a *testTransportAddr) String() string { return "test.local:1234" }
type testTransportConn struct{}
func (c *testTransportConn) Close() error {
return fmt.Errorf("close() not implemented")
}
func (c *testTransportConn) LocalAddr() net.Addr {
return &testTransportAddr{}
}
func (c *testTransportConn) RemoteAddr() net.Addr {
return &testTransportAddr{}
}
func (c *testTransportConn) Read(_ []byte) (int, error) {
return -1, fmt.Errorf("read() not implemented")
}
func (c *testTransportConn) SetDeadline(_ time.Time) error {
return fmt.Errorf("setDeadline() not implemented")
}
func (c *testTransportConn) SetReadDeadline(_ time.Time) error {
return fmt.Errorf("setReadDeadline() not implemented")
}
func (c *testTransportConn) SetWriteDeadline(_ time.Time) error {
return fmt.Errorf("setWriteDeadline() not implemented")
}
func (c *testTransportConn) Write(_ []byte) (int, error) {
return -1, fmt.Errorf("write() not implemented")
}