ceremonyclient/go-libp2p/p2p/net/swarm/swarm_notif_test.go

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2023-08-21 03:50:38 +00:00
package swarm_test
import (
"context"
"testing"
"time"
"github.com/libp2p/go-libp2p/core/network"
"github.com/libp2p/go-libp2p/core/peer"
. "github.com/libp2p/go-libp2p/p2p/net/swarm"
ma "github.com/multiformats/go-multiaddr"
"github.com/stretchr/testify/require"
)
func TestNotifications(t *testing.T) {
const swarmSize = 5
notifiees := make([]*netNotifiee, swarmSize)
swarms := makeSwarms(t, swarmSize)
defer func() {
for i, s := range swarms {
select {
case <-notifiees[i].listenClose:
t.Error("should not have been closed")
default:
}
require.NoError(t, s.Close())
select {
case <-notifiees[i].listenClose:
default:
t.Error("expected a listen close notification")
}
}
}()
const timeout = 5 * time.Second
// signup notifs
for i, swarm := range swarms {
n := newNetNotifiee(swarmSize)
swarm.Notify(n)
notifiees[i] = n
}
connectSwarms(t, context.Background(), swarms)
time.Sleep(50 * time.Millisecond)
// should've gotten 5 by now.
// test everyone got the correct connection opened calls
for i, s := range swarms {
n := notifiees[i]
notifs := make(map[peer.ID][]network.Conn)
for j, s2 := range swarms {
if i == j {
continue
}
// this feels a little sketchy, but its probably okay
for len(s.ConnsToPeer(s2.LocalPeer())) != len(notifs[s2.LocalPeer()]) {
select {
case c := <-n.connected:
nfp := notifs[c.RemotePeer()]
notifs[c.RemotePeer()] = append(nfp, c)
case <-time.After(timeout):
t.Fatal("timeout")
}
}
}
for p, cons := range notifs {
expect := s.ConnsToPeer(p)
if len(expect) != len(cons) {
t.Fatal("got different number of connections")
}
for _, c := range cons {
var found bool
for _, c2 := range expect {
if c == c2 {
found = true
break
}
}
if !found {
t.Fatal("connection not found!")
}
}
}
}
complement := func(c network.Conn) (*Swarm, *netNotifiee, *Conn) {
for i, s := range swarms {
for _, c2 := range s.Conns() {
if c.LocalMultiaddr().Equal(c2.RemoteMultiaddr()) &&
c2.LocalMultiaddr().Equal(c.RemoteMultiaddr()) {
return s, notifiees[i], c2.(*Conn)
}
}
}
t.Fatal("complementary conn not found", c)
return nil, nil, nil
}
// close conns
for i, s := range swarms {
n := notifiees[i]
for _, c := range s.Conns() {
_, n2, c2 := complement(c)
c.Close()
c2.Close()
var c3, c4 network.Conn
select {
case c3 = <-n.disconnected:
case <-time.After(timeout):
t.Fatal("timeout")
}
if c != c3 {
t.Fatal("got incorrect conn", c, c3)
}
select {
case c4 = <-n2.disconnected:
case <-time.After(timeout):
t.Fatal("timeout")
}
if c2 != c4 {
t.Fatal("got incorrect conn", c, c2)
}
}
}
}
type netNotifiee struct {
listen chan ma.Multiaddr
listenClose chan ma.Multiaddr
connected chan network.Conn
disconnected chan network.Conn
}
func newNetNotifiee(buffer int) *netNotifiee {
return &netNotifiee{
listen: make(chan ma.Multiaddr, buffer),
listenClose: make(chan ma.Multiaddr, buffer),
connected: make(chan network.Conn, buffer),
disconnected: make(chan network.Conn, buffer),
}
}
func (nn *netNotifiee) Listen(n network.Network, a ma.Multiaddr) {
nn.listen <- a
}
func (nn *netNotifiee) ListenClose(n network.Network, a ma.Multiaddr) {
nn.listenClose <- a
}
func (nn *netNotifiee) Connected(n network.Network, v network.Conn) {
nn.connected <- v
}
func (nn *netNotifiee) Disconnected(n network.Network, v network.Conn) {
nn.disconnected <- v
}