ceremonyclient/go-libp2p/p2p/host/autonat/svc_test.go

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2023-08-21 03:50:38 +00:00
package autonat
import (
"context"
"os"
"testing"
"time"
"github.com/libp2p/go-libp2p/core/event"
"github.com/libp2p/go-libp2p/core/host"
"github.com/libp2p/go-libp2p/core/network"
bhost "github.com/libp2p/go-libp2p/p2p/host/blank"
swarmt "github.com/libp2p/go-libp2p/p2p/net/swarm/testing"
"github.com/stretchr/testify/require"
)
func makeAutoNATConfig(t *testing.T) *config {
h := bhost.NewBlankHost(swarmt.GenSwarm(t))
dh := bhost.NewBlankHost(swarmt.GenSwarm(t))
c := config{host: h, dialer: dh.Network()}
_ = defaults(&c)
c.forceReachability = true
c.dialPolicy.allowSelfDials = true
return &c
}
func makeAutoNATService(t *testing.T, c *config) *autoNATService {
as, err := newAutoNATService(c)
if err != nil {
t.Fatal(err)
}
as.Enable()
return as
}
func makeAutoNATClient(t *testing.T) (host.Host, Client) {
h := bhost.NewBlankHost(swarmt.GenSwarm(t))
cli := NewAutoNATClient(h, nil, nil)
return h, cli
}
// Note: these tests assume that the host has only private network addresses!
func TestAutoNATServiceDialRefused(t *testing.T) {
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
c := makeAutoNATConfig(t)
defer c.host.Close()
defer c.dialer.Close()
c.dialTimeout = 1 * time.Second
c.dialPolicy.allowSelfDials = false
_ = makeAutoNATService(t, c)
hc, ac := makeAutoNATClient(t)
defer hc.Close()
connect(t, c.host, hc)
err := ac.DialBack(ctx, c.host.ID())
if err == nil {
t.Fatal("Dial back succeeded unexpectedly!")
}
if !IsDialRefused(err) {
t.Fatal(err)
}
}
func TestAutoNATServiceDialSuccess(t *testing.T) {
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
c := makeAutoNATConfig(t)
defer c.host.Close()
defer c.dialer.Close()
_ = makeAutoNATService(t, c)
hc, ac := makeAutoNATClient(t)
defer hc.Close()
connect(t, c.host, hc)
err := ac.DialBack(ctx, c.host.ID())
if err != nil {
t.Fatalf("Dial back failed: %s", err.Error())
}
}
func TestAutoNATServiceDialRateLimiter(t *testing.T) {
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
c := makeAutoNATConfig(t)
defer c.host.Close()
defer c.dialer.Close()
c.dialTimeout = 200 * time.Millisecond
c.throttleResetPeriod = 200 * time.Millisecond
c.throttleResetJitter = 0
c.throttlePeerMax = 1
_ = makeAutoNATService(t, c)
hc, ac := makeAutoNATClient(t)
defer hc.Close()
connect(t, c.host, hc)
err := ac.DialBack(ctx, c.host.ID())
if err != nil {
t.Fatal(err)
}
err = ac.DialBack(ctx, c.host.ID())
if err == nil {
t.Fatal("Dial back succeeded unexpectedly!")
}
if !IsDialRefused(err) {
t.Fatal(err)
}
time.Sleep(400 * time.Millisecond)
err = ac.DialBack(ctx, c.host.ID())
if err != nil {
t.Fatal(err)
}
}
func TestAutoNATServiceGlobalLimiter(t *testing.T) {
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
c := makeAutoNATConfig(t)
defer c.host.Close()
defer c.dialer.Close()
c.dialTimeout = time.Second
c.throttleResetPeriod = 10 * time.Second
c.throttleResetJitter = 0
c.throttlePeerMax = 1
c.throttleGlobalMax = 5
_ = makeAutoNATService(t, c)
hs := c.host
for i := 0; i < 5; i++ {
hc, ac := makeAutoNATClient(t)
connect(t, hs, hc)
err := ac.DialBack(ctx, hs.ID())
if err != nil {
t.Fatal(err)
}
}
hc, ac := makeAutoNATClient(t)
defer hc.Close()
connect(t, hs, hc)
err := ac.DialBack(ctx, hs.ID())
if err == nil {
t.Fatal("Dial back succeeded unexpectedly!")
}
if !IsDialRefused(err) {
t.Fatal(err)
}
}
func TestAutoNATServiceRateLimitJitter(t *testing.T) {
c := makeAutoNATConfig(t)
defer c.host.Close()
defer c.dialer.Close()
dur := 100 * time.Millisecond
if os.Getenv("CI") != "" {
dur = 200 * time.Millisecond
}
c.throttleResetPeriod = dur
c.throttleResetJitter = dur
c.throttleGlobalMax = 1
svc := makeAutoNATService(t, c)
svc.mx.Lock()
svc.globalReqs = 1
svc.mx.Unlock()
require.Eventually(t, func() bool {
svc.mx.Lock()
defer svc.mx.Unlock()
return svc.globalReqs == 0
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}, dur*5/2, 10*time.Millisecond, "reset of rate limiter occurred slower than expected")
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}
func TestAutoNATServiceStartup(t *testing.T) {
h := bhost.NewBlankHost(swarmt.GenSwarm(t))
defer h.Close()
dh := bhost.NewBlankHost(swarmt.GenSwarm(t))
defer dh.Close()
an, err := New(h, EnableService(dh.Network()))
an.(*AmbientAutoNAT).config.dialPolicy.allowSelfDials = true
if err != nil {
t.Fatal(err)
}
hc, ac := makeAutoNATClient(t)
connect(t, h, hc)
err = ac.DialBack(context.Background(), h.ID())
if err != nil {
t.Fatal("autonat service be active in unknown mode.")
}
sub, _ := h.EventBus().Subscribe(new(event.EvtLocalReachabilityChanged))
anc := an.(*AmbientAutoNAT)
anc.recordObservation(network.ReachabilityPublic)
<-sub.Out()
err = ac.DialBack(context.Background(), h.ID())
if err != nil {
t.Fatalf("autonat should be active, was %v", err)
}
if an.Status() != network.ReachabilityPublic {
t.Fatalf("autonat should report public, but didn't")
}
}