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package p2p
import (
"fmt"
golog "log"
"net"
"testing"
"time"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"github.com/tendermint/tendermint/crypto"
"github.com/tendermint/tendermint/crypto/ed25519"
"github.com/tendermint/tendermint/libs/bytes"
"github.com/tendermint/tendermint/libs/log"
"github.com/tendermint/tendermint/config"
tmconn "github.com/tendermint/tendermint/p2p/conn"
)
func TestPeerIDFromString(t *testing.T) {
testCases := map[string]struct {
input string
expectedID PeerID
expectErr bool
}{
"empty peer ID string": {"", PeerID{}, false},
"invalid peer ID string": {"foo", nil, true},
"valid peer ID string": {"ff", PeerID{0xFF}, false},
}
for name, tc := range testCases {
tc := tc
t.Run(name, func(t *testing.T) {
pID, err := PeerIDFromString(tc.input)
require.Equal(t, tc.expectErr, err != nil, err)
require.Equal(t, tc.expectedID, pID)
})
}
}
func TestPeerID_String(t *testing.T) {
require.Equal(t, "", PeerID{}.String())
require.Equal(t, "ff", PeerID{0xFF}.String())
}
func TestPeerID_Equal(t *testing.T) {
testCases := map[string]struct {
idA PeerID
idB PeerID
equal bool
}{
"empty IDs": {PeerID{}, PeerID{}, true},
"not equal": {PeerID{0xFF}, PeerID{0xAA}, false},
"equal": {PeerID{0xFF}, PeerID{0xFF}, true},
}
for name, tc := range testCases {
tc := tc
t.Run(name, func(t *testing.T) {
require.Equal(t, tc.equal, tc.idA.Equal(tc.idB))
})
}
}
func TestPeerBasic(t *testing.T) {
assert, require := assert.New(t), require.New(t)
// simulate remote peer
rp := &remotePeer{PrivKey: ed25519.GenPrivKey(), Config: cfg}
rp.Start()
t.Cleanup(rp.Stop)
p, err := createOutboundPeerAndPerformHandshake(rp.Addr(), cfg, tmconn.DefaultMConnConfig())
require.Nil(err)
err = p.Start()
require.Nil(err)
t.Cleanup(func() {
if err := p.Stop(); err != nil {
t.Error(err)
}
})
assert.True(p.IsRunning())
assert.True(p.IsOutbound())
assert.False(p.IsPersistent())
p.persistent = true
assert.True(p.IsPersistent())
assert.Equal(rp.Addr().DialString(), p.RemoteAddr().String())
assert.Equal(rp.ID(), p.ID())
}
func TestPeerSend(t *testing.T) {
assert, require := assert.New(t), require.New(t)
config := cfg
// simulate remote peer
rp := &remotePeer{PrivKey: ed25519.GenPrivKey(), Config: config}
rp.Start()
t.Cleanup(rp.Stop)
p, err := createOutboundPeerAndPerformHandshake(rp.Addr(), config, tmconn.DefaultMConnConfig())
require.Nil(err)
err = p.Start()
require.Nil(err)
t.Cleanup(func() {
if err := p.Stop(); err != nil {
t.Error(err)
}
})
assert.True(p.CanSend(testCh))
assert.True(p.Send(testCh, []byte("Asylum")))
}
func createOutboundPeerAndPerformHandshake(
addr *NetAddress,
config *config.P2PConfig,
mConfig tmconn.MConnConfig,
) (*peer, error) {
chDescs := []*tmconn.ChannelDescriptor{
{ID: testCh, Priority: 1},
}
reactorsByCh := map[byte]Reactor{testCh: NewTestReactor(chDescs, true)}
pk := ed25519.GenPrivKey()
pc, err := testOutboundPeerConn(addr, config, false, pk)
if err != nil {
return nil, err
}
timeout := 1 * time.Second
ourNodeInfo := testNodeInfo(addr.ID, "host_peer")
peerNodeInfo, err := handshake(pc.conn, timeout, ourNodeInfo)
if err != nil {
return nil, err
}
p := newPeer(pc, mConfig, peerNodeInfo, reactorsByCh, chDescs, func(p Peer, r interface{}) {})
p.SetLogger(log.TestingLogger().With("peer", addr))
return p, nil
}
func testDial(addr *NetAddress, cfg *config.P2PConfig) (net.Conn, error) {
if cfg.TestDialFail {
return nil, fmt.Errorf("dial err (peerConfig.DialFail == true)")
}
conn, err := addr.DialTimeout(cfg.DialTimeout)
if err != nil {
return nil, err
}
return conn, nil
}
func testOutboundPeerConn(
addr *NetAddress,
config *config.P2PConfig,
persistent bool,
ourNodePrivKey crypto.PrivKey,
) (peerConn, error) {
var pc peerConn
conn, err := testDial(addr, config)
if err != nil {
return pc, fmt.Errorf("error creating peer: %w", err)
}
pc, err = testPeerConn(conn, config, true, persistent, ourNodePrivKey, addr)
if err != nil {
if cerr := conn.Close(); cerr != nil {
return pc, fmt.Errorf("%v: %w", cerr.Error(), err)
}
return pc, err
}
// ensure dialed ID matches connection ID
if addr.ID != pc.ID() {
if cerr := conn.Close(); cerr != nil {
return pc, fmt.Errorf("%v: %w", cerr.Error(), err)
}
return pc, ErrSwitchAuthenticationFailure{addr, pc.ID()}
}
return pc, nil
}
type remotePeer struct {
PrivKey crypto.PrivKey
Config *config.P2PConfig
addr *NetAddress
channels bytes.HexBytes
listenAddr string
listener net.Listener
}
func (rp *remotePeer) Addr() *NetAddress {
return rp.addr
}
func (rp *remotePeer) ID() ID {
return PubKeyToID(rp.PrivKey.PubKey())
}
func (rp *remotePeer) Start() {
if rp.listenAddr == "" {
rp.listenAddr = "127.0.0.1:0"
}
l, e := net.Listen("tcp", rp.listenAddr) // any available address
if e != nil {
golog.Fatalf("net.Listen tcp :0: %+v", e)
}
rp.listener = l
rp.addr = NewNetAddress(PubKeyToID(rp.PrivKey.PubKey()), l.Addr())
if rp.channels == nil {
rp.channels = []byte{testCh}
}
go rp.accept()
}
func (rp *remotePeer) Stop() {
rp.listener.Close()
}
func (rp *remotePeer) Dial(addr *NetAddress) (net.Conn, error) {
conn, err := addr.DialTimeout(1 * time.Second)
if err != nil {
return nil, err
}
pc, err := testInboundPeerConn(conn, rp.Config, rp.PrivKey)
if err != nil {
return nil, err
}
_, err = handshake(pc.conn, time.Second, rp.nodeInfo())
if err != nil {
return nil, err
}
return conn, err
}
func (rp *remotePeer) accept() {
conns := []net.Conn{}
for {
conn, err := rp.listener.Accept()
if err != nil {
golog.Printf("Failed to accept conn: %+v", err)
for _, conn := range conns {
_ = conn.Close()
}
return
}
pc, err := testInboundPeerConn(conn, rp.Config, rp.PrivKey)
if err != nil {
golog.Fatalf("Failed to create a peer: %+v", err)
}
_, err = handshake(pc.conn, time.Second, rp.nodeInfo())
if err != nil {
golog.Fatalf("Failed to perform handshake: %+v", err)
}
conns = append(conns, conn)
}
}
func (rp *remotePeer) nodeInfo() NodeInfo {
return DefaultNodeInfo{
ProtocolVersion: defaultProtocolVersion,
DefaultNodeID: rp.Addr().ID,
ListenAddr: rp.listener.Addr().String(),
Network: "testing",
Version: "1.2.3-rc0-deadbeef",
Channels: rp.channels,
Moniker: "remote_peer",
}
}