ceremonyclient/go-libp2p/p2p/protocol/circuitv2/relay/relay_test.go

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2023-08-21 03:50:38 +00:00
package relay_test
import (
"bytes"
"context"
"crypto/rand"
"fmt"
"io"
"testing"
"time"
"github.com/libp2p/go-libp2p/core/crypto"
"github.com/libp2p/go-libp2p/core/host"
"github.com/libp2p/go-libp2p/core/metrics"
"github.com/libp2p/go-libp2p/core/network"
"github.com/libp2p/go-libp2p/core/peer"
"github.com/libp2p/go-libp2p/core/transport"
bhost "github.com/libp2p/go-libp2p/p2p/host/blank"
"github.com/libp2p/go-libp2p/p2p/host/eventbus"
"github.com/libp2p/go-libp2p/p2p/host/peerstore/pstoremem"
"github.com/libp2p/go-libp2p/p2p/net/swarm"
swarmt "github.com/libp2p/go-libp2p/p2p/net/swarm/testing"
"github.com/libp2p/go-libp2p/p2p/protocol/circuitv2/client"
"github.com/libp2p/go-libp2p/p2p/protocol/circuitv2/relay"
"github.com/libp2p/go-libp2p/p2p/transport/tcp"
ma "github.com/multiformats/go-multiaddr"
)
func getNetHosts(t *testing.T, ctx context.Context, n int) (hosts []host.Host, upgraders []transport.Upgrader) {
for i := 0; i < n; i++ {
privk, pubk, err := crypto.GenerateKeyPair(crypto.Ed25519, 0)
if err != nil {
t.Fatal(err)
}
p, err := peer.IDFromPublicKey(pubk)
if err != nil {
t.Fatal(err)
}
ps, err := pstoremem.NewPeerstore()
if err != nil {
t.Fatal(err)
}
err = ps.AddPrivKey(p, privk)
if err != nil {
t.Fatal(err)
}
bwr := metrics.NewBandwidthCounter()
netw, err := swarm.NewSwarm(p, ps, eventbus.NewBus(), swarm.WithMetrics(bwr))
if err != nil {
t.Fatal(err)
}
upgrader := swarmt.GenUpgrader(t, netw, nil)
upgraders = append(upgraders, upgrader)
tpt, err := tcp.NewTCPTransport(upgrader, nil)
if err != nil {
t.Fatal(err)
}
if err := netw.AddTransport(tpt); err != nil {
t.Fatal(err)
}
err = netw.Listen(ma.StringCast("/ip4/127.0.0.1/tcp/0"))
if err != nil {
t.Fatal(err)
}
h := bhost.NewBlankHost(netw)
hosts = append(hosts, h)
}
return hosts, upgraders
}
func connect(t *testing.T, a, b host.Host) {
pi := peer.AddrInfo{ID: a.ID(), Addrs: a.Addrs()}
err := b.Connect(context.Background(), pi)
if err != nil {
t.Fatal(err)
}
}
func addTransport(t *testing.T, h host.Host, upgrader transport.Upgrader) {
if err := client.AddTransport(h, upgrader); err != nil {
t.Fatal(err)
}
}
func TestBasicRelay(t *testing.T) {
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
hosts, upgraders := getNetHosts(t, ctx, 3)
addTransport(t, hosts[0], upgraders[0])
addTransport(t, hosts[2], upgraders[2])
rch := make(chan []byte, 1)
hosts[0].SetStreamHandler("test", func(s network.Stream) {
defer s.Close()
defer close(rch)
buf := make([]byte, 1024)
nread := 0
for nread < len(buf) {
n, err := s.Read(buf[nread:])
nread += n
if err != nil {
if err == io.EOF {
break
}
t.Fatal(err)
}
}
rch <- buf[:nread]
})
r, err := relay.New(hosts[1])
if err != nil {
t.Fatal(err)
}
defer r.Close()
connect(t, hosts[0], hosts[1])
connect(t, hosts[1], hosts[2])
rinfo := hosts[1].Peerstore().PeerInfo(hosts[1].ID())
rsvp, err := client.Reserve(ctx, hosts[0], rinfo)
if err != nil {
t.Fatal(err)
}
if rsvp.Voucher == nil {
t.Fatal("no reservation voucher")
}
raddr, err := ma.NewMultiaddr(fmt.Sprintf("/p2p/%s/p2p-circuit/p2p/%s", hosts[1].ID(), hosts[0].ID()))
if err != nil {
t.Fatal(err)
}
err = hosts[2].Connect(ctx, peer.AddrInfo{ID: hosts[0].ID(), Addrs: []ma.Multiaddr{raddr}})
if err != nil {
t.Fatal(err)
}
conns := hosts[2].Network().ConnsToPeer(hosts[0].ID())
if len(conns) != 1 {
t.Fatalf("expected 1 connection, but got %d", len(conns))
}
if !conns[0].Stat().Transient {
t.Fatal("expected transient connection")
}
s, err := hosts[2].NewStream(network.WithUseTransient(ctx, "test"), hosts[0].ID(), "test")
if err != nil {
t.Fatal(err)
}
msg := []byte("relay works!")
nwritten, err := s.Write(msg)
if err != nil {
t.Fatal(err)
}
if nwritten != len(msg) {
t.Fatalf("expected to write %d bytes, but wrote %d instead", len(msg), nwritten)
}
s.CloseWrite()
got := <-rch
if !bytes.Equal(msg, got) {
t.Fatalf("Wrong echo; expected %s but got %s", string(msg), string(got))
}
}
func TestRelayLimitTime(t *testing.T) {
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
hosts, upgraders := getNetHosts(t, ctx, 3)
addTransport(t, hosts[0], upgraders[0])
addTransport(t, hosts[2], upgraders[2])
rch := make(chan error, 1)
hosts[0].SetStreamHandler("test", func(s network.Stream) {
defer s.Close()
defer close(rch)
buf := make([]byte, 1024)
_, err := s.Read(buf)
rch <- err
})
rc := relay.DefaultResources()
rc.Limit.Duration = time.Second
r, err := relay.New(hosts[1], relay.WithResources(rc))
if err != nil {
t.Fatal(err)
}
defer r.Close()
connect(t, hosts[0], hosts[1])
connect(t, hosts[1], hosts[2])
rinfo := hosts[1].Peerstore().PeerInfo(hosts[1].ID())
_, err = client.Reserve(ctx, hosts[0], rinfo)
if err != nil {
t.Fatal(err)
}
raddr, err := ma.NewMultiaddr(fmt.Sprintf("/p2p/%s/p2p-circuit/p2p/%s", hosts[1].ID(), hosts[0].ID()))
if err != nil {
t.Fatal(err)
}
err = hosts[2].Connect(ctx, peer.AddrInfo{ID: hosts[0].ID(), Addrs: []ma.Multiaddr{raddr}})
if err != nil {
t.Fatal(err)
}
conns := hosts[2].Network().ConnsToPeer(hosts[0].ID())
if len(conns) != 1 {
t.Fatalf("expected 1 connection, but got %d", len(conns))
}
if !conns[0].Stat().Transient {
t.Fatal("expected transient connection")
}
s, err := hosts[2].NewStream(network.WithUseTransient(ctx, "test"), hosts[0].ID(), "test")
if err != nil {
t.Fatal(err)
}
time.Sleep(2 * time.Second)
n, err := s.Write([]byte("should be closed"))
if n > 0 {
t.Fatalf("expected to write 0 bytes, wrote %d", n)
}
if err != network.ErrReset {
t.Fatalf("expected reset, but got %s", err)
}
err = <-rch
if err != network.ErrReset {
t.Fatalf("expected reset, but got %s", err)
}
}
func TestRelayLimitData(t *testing.T) {
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
hosts, upgraders := getNetHosts(t, ctx, 3)
addTransport(t, hosts[0], upgraders[0])
addTransport(t, hosts[2], upgraders[2])
rch := make(chan int, 1)
hosts[0].SetStreamHandler("test", func(s network.Stream) {
defer s.Close()
defer close(rch)
buf := make([]byte, 1024)
for i := 0; i < 3; i++ {
n, err := s.Read(buf)
if err != nil {
t.Fatal(err)
}
rch <- n
}
n, err := s.Read(buf)
if err != network.ErrReset {
t.Fatalf("expected reset but got %s", err)
}
rch <- n
})
rc := relay.DefaultResources()
rc.Limit.Duration = time.Second
rc.Limit.Data = 4096
r, err := relay.New(hosts[1], relay.WithResources(rc))
if err != nil {
t.Fatal(err)
}
defer r.Close()
connect(t, hosts[0], hosts[1])
connect(t, hosts[1], hosts[2])
rinfo := hosts[1].Peerstore().PeerInfo(hosts[1].ID())
_, err = client.Reserve(ctx, hosts[0], rinfo)
if err != nil {
t.Fatal(err)
}
raddr, err := ma.NewMultiaddr(fmt.Sprintf("/p2p/%s/p2p-circuit/p2p/%s", hosts[1].ID(), hosts[0].ID()))
if err != nil {
t.Fatal(err)
}
err = hosts[2].Connect(ctx, peer.AddrInfo{ID: hosts[0].ID(), Addrs: []ma.Multiaddr{raddr}})
if err != nil {
t.Fatal(err)
}
conns := hosts[2].Network().ConnsToPeer(hosts[0].ID())
if len(conns) != 1 {
t.Fatalf("expected 1 connection, but got %d", len(conns))
}
if !conns[0].Stat().Transient {
t.Fatal("expected transient connection")
}
s, err := hosts[2].NewStream(network.WithUseTransient(ctx, "test"), hosts[0].ID(), "test")
if err != nil {
t.Fatal(err)
}
buf := make([]byte, 1024)
for i := 0; i < 3; i++ {
if _, err := rand.Read(buf); err != nil {
t.Fatal(err)
}
n, err := s.Write(buf)
if err != nil {
t.Fatal(err)
}
if n != len(buf) {
t.Fatalf("expected to write %d bytes but wrote %d", len(buf), n)
}
n = <-rch
if n != len(buf) {
t.Fatalf("expected to read %d bytes but read %d", len(buf), n)
}
}
buf = make([]byte, 4096)
if _, err := rand.Read(buf); err != nil {
t.Fatal(err)
}
s.Write(buf)
n := <-rch
if n != 0 {
t.Fatalf("expected to read 0 bytes but read %d", n)
}
}