go-waku/waku/v2/discv5/discover_test.go

162 lines
4.7 KiB
Go

package discv5
import (
"context"
"crypto/ecdsa"
"fmt"
"math"
"net"
"strconv"
"testing"
"time"
gcrypto "github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/p2p/enode"
"github.com/ethereum/go-ethereum/p2p/enr"
"github.com/multiformats/go-multiaddr"
"github.com/stretchr/testify/require"
"github.com/waku-org/go-waku/tests"
"github.com/waku-org/go-waku/waku/v2/utils"
"go.uber.org/zap"
"github.com/libp2p/go-libp2p"
libp2pcrypto "github.com/libp2p/go-libp2p/core/crypto"
"github.com/libp2p/go-libp2p/core/host"
)
func createHost(t *testing.T) (host.Host, int, *ecdsa.PrivateKey) {
privKey, err := gcrypto.GenerateKey()
require.NoError(t, err)
sPrivKey := libp2pcrypto.PrivKey(utils.EcdsaPrivKeyToSecp256k1PrivKey(privKey))
port, err := tests.FindFreePort(t, "127.0.0.1", 3)
require.NoError(t, err)
sourceMultiAddr, err := multiaddr.NewMultiaddr(fmt.Sprintf("/ip4/127.0.0.1/tcp/%d", port))
require.NoError(t, err)
host, err := libp2p.New(
libp2p.ListenAddrs(sourceMultiAddr),
libp2p.Identity(sPrivKey),
)
require.NoError(t, err)
return host, port, privKey
}
func newLocalnode(priv *ecdsa.PrivateKey, ipAddr *net.TCPAddr, udpPort int, wakuFlags utils.WakuEnrBitfield, advertiseAddr *net.IP, log *zap.Logger) (*enode.LocalNode, error) {
db, err := enode.OpenDB("")
if err != nil {
return nil, err
}
localnode := enode.NewLocalNode(db, priv)
localnode.SetFallbackUDP(udpPort)
localnode.Set(enr.WithEntry(utils.WakuENRField, wakuFlags))
localnode.SetFallbackIP(net.IP{127, 0, 0, 1})
localnode.SetStaticIP(ipAddr.IP)
if udpPort > 0 && udpPort <= math.MaxUint16 {
localnode.Set(enr.UDP(uint16(udpPort))) // lgtm [go/incorrect-integer-conversion]
} else {
log.Error("setting udpPort", zap.Int("port", udpPort))
}
if ipAddr.Port > 0 && ipAddr.Port <= math.MaxUint16 {
localnode.Set(enr.TCP(uint16(ipAddr.Port))) // lgtm [go/incorrect-integer-conversion]
} else {
log.Error("setting tcpPort", zap.Int("port", ipAddr.Port))
}
if advertiseAddr != nil {
localnode.SetStaticIP(*advertiseAddr)
}
return localnode, nil
}
func extractIP(addr multiaddr.Multiaddr) (*net.TCPAddr, error) {
ipStr, err := addr.ValueForProtocol(multiaddr.P_IP4)
if err != nil {
return nil, err
}
portStr, err := addr.ValueForProtocol(multiaddr.P_TCP)
if err != nil {
return nil, err
}
port, err := strconv.Atoi(portStr)
if err != nil {
return nil, err
}
return &net.TCPAddr{
IP: net.ParseIP(ipStr),
Port: port,
}, nil
}
func TestDiscV5(t *testing.T) {
// Host1 <-> Host2 <-> Host3
// H1
host1, _, prvKey1 := createHost(t)
udpPort1, err := tests.FindFreeUDPPort(t, "127.0.0.1", 3)
require.NoError(t, err)
ip1, _ := extractIP(host1.Addrs()[0])
l1, err := newLocalnode(prvKey1, ip1, udpPort1, utils.NewWakuEnrBitfield(true, true, true, true), nil, utils.Logger())
require.NoError(t, err)
peerconn1 := tests.NewTestPeerDiscoverer()
d1, err := NewDiscoveryV5(host1, prvKey1, l1, peerconn1, utils.Logger(), WithUDPPort(uint(udpPort1)))
require.NoError(t, err)
// H2
host2, _, prvKey2 := createHost(t)
ip2, _ := extractIP(host2.Addrs()[0])
udpPort2, err := tests.FindFreeUDPPort(t, "127.0.0.1", 3)
require.NoError(t, err)
l2, err := newLocalnode(prvKey2, ip2, udpPort2, utils.NewWakuEnrBitfield(true, true, true, true), nil, utils.Logger())
require.NoError(t, err)
peerconn2 := tests.NewTestPeerDiscoverer()
d2, err := NewDiscoveryV5(host2, prvKey2, l2, peerconn2, utils.Logger(), WithUDPPort(uint(udpPort2)), WithBootnodes([]*enode.Node{d1.localnode.Node()}))
require.NoError(t, err)
// H3
host3, _, prvKey3 := createHost(t)
ip3, _ := extractIP(host3.Addrs()[0])
udpPort3, err := tests.FindFreeUDPPort(t, "127.0.0.1", 3)
require.NoError(t, err)
l3, err := newLocalnode(prvKey3, ip3, udpPort3, utils.NewWakuEnrBitfield(true, true, true, true), nil, utils.Logger())
require.NoError(t, err)
peerconn3 := tests.NewTestPeerDiscoverer()
d3, err := NewDiscoveryV5(host3, prvKey3, l3, peerconn3, utils.Logger(), WithUDPPort(uint(udpPort3)), WithBootnodes([]*enode.Node{d2.localnode.Node()}))
require.NoError(t, err)
defer d1.Stop()
defer d2.Stop()
defer d3.Stop()
err = d1.Start(context.Background())
require.NoError(t, err)
err = d2.Start(context.Background())
require.NoError(t, err)
err = d3.Start(context.Background())
require.NoError(t, err)
time.Sleep(2 * time.Second) // Wait for nodes to be discovered
require.True(t, peerconn3.HasPeer(host1.ID()) && peerconn3.HasPeer(host2.ID()))
d3.Stop()
peerconn3.Clear()
// Restart peer search
err = d3.Start(context.Background())
require.NoError(t, err)
time.Sleep(2 * time.Second) // Wait for nodes to be discovered
require.True(t, peerconn3.HasPeer(host1.ID()) && peerconn3.HasPeer(host2.ID()))
}