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package p2p
import (
"context"
"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/types"
"github.com/tendermint/tendermint/config"
tmconn "github.com/tendermint/tendermint/internal/p2p/conn"
)
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.Send(testCh, []byte("Asylum")))
}
func createOutboundPeerAndPerformHandshake(
addr *NetAddress,
config *config.P2PConfig,
mConfig tmconn.MConnConfig,
) (*peer, error) {
chDescs := []*tmconn.ChannelDescriptor{
{ID: testCh, Priority: 1},
}
pk := ed25519.GenPrivKey()
ourNodeInfo := testNodeInfo(types.NodeIDFromPubKey(pk.PubKey()), "host_peer")
transport := NewMConnTransport(log.TestingLogger(), mConfig, chDescs, MConnTransportOptions{})
reactorsByCh := map[byte]Reactor{testCh: NewTestReactor(chDescs, true)}
pc, err := testOutboundPeerConn(transport, addr, config, false, pk)
if err != nil {
return nil, err
}
peerInfo, _, err := pc.conn.Handshake(context.Background(), ourNodeInfo, pk)
if err != nil {
return nil, err
}
p := newPeer(peerInfo, pc, reactorsByCh, 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(
transport *MConnTransport,
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(transport, conn, true, persistent)
if err != nil {
if cerr := conn.Close(); cerr != nil {
return pc, fmt.Errorf("%v: %w", cerr.Error(), err)
}
return pc, err
}
return pc, nil
}
type remotePeer struct {
PrivKey crypto.PrivKey
Config *config.P2PConfig
Network string
addr *NetAddress
channels bytes.HexBytes
listenAddr string
listener net.Listener
}
func (rp *remotePeer) Addr() *NetAddress {
return rp.addr
}
func (rp *remotePeer) ID() types.NodeID {
return types.NodeIDFromPubKey(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 = types.NewNetAddress(types.NodeIDFromPubKey(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) {
transport := NewMConnTransport(log.TestingLogger(), MConnConfig(rp.Config),
[]*ChannelDescriptor{}, MConnTransportOptions{})
conn, err := addr.DialTimeout(1 * time.Second)
if err != nil {
return nil, err
}
pc, err := testInboundPeerConn(transport, conn)
if err != nil {
return nil, err
}
_, _, err = pc.conn.Handshake(context.Background(), rp.nodeInfo(), rp.PrivKey)
if err != nil {
return nil, err
}
return conn, err
}
func (rp *remotePeer) accept() {
transport := NewMConnTransport(log.TestingLogger(), MConnConfig(rp.Config),
[]*ChannelDescriptor{}, MConnTransportOptions{})
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(transport, conn)
if err != nil {
golog.Printf("Failed to create a peer: %+v", err)
}
_, _, err = pc.conn.Handshake(context.Background(), rp.nodeInfo(), rp.PrivKey)
if err != nil {
golog.Printf("Failed to handshake a peer: %+v", err)
}
conns = append(conns, conn)
}
}
func (rp *remotePeer) nodeInfo() types.NodeInfo {
ni := types.NodeInfo{
ProtocolVersion: defaultProtocolVersion,
NodeID: rp.Addr().ID,
ListenAddr: rp.listener.Addr().String(),
Network: "testing",
Version: "1.2.3-rc0-deadbeef",
Channels: rp.channels,
Moniker: "remote_peer",
}
if rp.Network != "" {
ni.Network = rp.Network
}
return ni
}