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package p2p_test
import (
"context"
"errors"
"fmt"
"io"
"runtime"
"strings"
"sync"
"testing"
"time"
"github.com/fortytw2/leaktest"
"github.com/gogo/protobuf/proto"
gogotypes "github.com/gogo/protobuf/types"
"github.com/stretchr/testify/mock"
"github.com/stretchr/testify/require"
dbm "github.com/tendermint/tm-db"
"github.com/tendermint/tendermint/crypto"
tmsync "github.com/tendermint/tendermint/internal/libs/sync"
"github.com/tendermint/tendermint/internal/p2p"
"github.com/tendermint/tendermint/internal/p2p/mocks"
"github.com/tendermint/tendermint/internal/p2p/p2ptest"
"github.com/tendermint/tendermint/libs/log"
"github.com/tendermint/tendermint/types"
)
func echoReactor(channel *p2p.Channel) {
for {
select {
case envelope := <-channel.In:
value := envelope.Message.(*p2ptest.Message).Value
channel.Out <- p2p.Envelope{
To: envelope.From,
Message: &p2ptest.Message{Value: value},
}
case <-channel.Done():
return
}
}
}
func TestRouter_Network(t *testing.T) {
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
t.Cleanup(leaktest.Check(t))
// Create a test network and open a channel where all peers run echoReactor.
network := p2ptest.MakeNetwork(ctx, t, p2ptest.NetworkOptions{NumNodes: 8})
local := network.RandomNode()
peers := network.Peers(local.NodeID)
channels := network.MakeChannels(t, chDesc)
network.Start(t)
channel := channels[local.NodeID]
for _, peer := range peers {
go echoReactor(channels[peer.NodeID])
}
// Sending a message to each peer should work.
for _, peer := range peers {
p2ptest.RequireSendReceive(t, channel, peer.NodeID,
&p2ptest.Message{Value: "foo"},
&p2ptest.Message{Value: "foo"},
)
}
// Sending a broadcast should return back a message from all peers.
p2ptest.RequireSend(t, channel, p2p.Envelope{
Broadcast: true,
Message: &p2ptest.Message{Value: "bar"},
})
expect := []p2p.Envelope{}
for _, peer := range peers {
expect = append(expect, p2p.Envelope{
From: peer.NodeID,
Message: &p2ptest.Message{Value: "bar"},
})
}
p2ptest.RequireReceiveUnordered(t, channel, expect)
// We then submit an error for a peer, and watch it get disconnected and
// then reconnected as the router retries it.
peerUpdates := local.MakePeerUpdatesNoRequireEmpty(t)
channel.Error <- p2p.PeerError{
NodeID: peers[0].NodeID,
Err: errors.New("boom"),
}
p2ptest.RequireUpdates(t, peerUpdates, []p2p.PeerUpdate{
{NodeID: peers[0].NodeID, Status: p2p.PeerStatusDown},
{NodeID: peers[0].NodeID, Status: p2p.PeerStatusUp},
})
}
func TestRouter_Channel_Basic(t *testing.T) {
t.Cleanup(leaktest.Check(t))
// Set up a router with no transports (so no peers).
peerManager, err := p2p.NewPeerManager(selfID, dbm.NewMemDB(), p2p.PeerManagerOptions{})
require.NoError(t, err)
defer peerManager.Close()
router, err := p2p.NewRouter(
log.TestingLogger(),
p2p.NopMetrics(),
selfInfo,
selfKey,
peerManager,
nil,
nil,
p2p.RouterOptions{},
)
require.NoError(t, err)
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
require.NoError(t, router.Start(ctx))
t.Cleanup(router.Wait)
// Opening a channel should work.
channel, err := router.OpenChannel(chDesc)
require.NoError(t, err)
require.Contains(t, router.NodeInfo().Channels, byte(chDesc.ID))
// Opening the same channel again should fail.
_, err = router.OpenChannel(chDesc)
require.Error(t, err)
// Opening a different channel should work.
chDesc2 := &p2p.ChannelDescriptor{ID: 2, MessageType: &p2ptest.Message{}}
_, err = router.OpenChannel(chDesc2)
require.NoError(t, err)
require.Contains(t, router.NodeInfo().Channels, byte(chDesc2.ID))
// Closing the channel, then opening it again should be fine.
channel.Close()
time.Sleep(100 * time.Millisecond) // yes yes, but Close() is async...
channel, err = router.OpenChannel(chDesc)
require.NoError(t, err)
// We should be able to send on the channel, even though there are no peers.
p2ptest.RequireSend(t, channel, p2p.Envelope{
To: types.NodeID(strings.Repeat("a", 40)),
Message: &p2ptest.Message{Value: "foo"},
})
// A message to ourselves should be dropped.
p2ptest.RequireSend(t, channel, p2p.Envelope{
To: selfID,
Message: &p2ptest.Message{Value: "self"},
})
p2ptest.RequireEmpty(t, channel)
}
// Channel tests are hairy to mock, so we use an in-memory network instead.
func TestRouter_Channel_SendReceive(t *testing.T) {
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
t.Cleanup(leaktest.Check(t))
// Create a test network and open a channel on all nodes.
network := p2ptest.MakeNetwork(ctx, t, p2ptest.NetworkOptions{NumNodes: 3})
ids := network.NodeIDs()
aID, bID, cID := ids[0], ids[1], ids[2]
channels := network.MakeChannels(t, chDesc)
a, b, c := channels[aID], channels[bID], channels[cID]
otherChannels := network.MakeChannels(t, p2ptest.MakeChannelDesc(9))
network.Start(t)
// Sending a message a->b should work, and not send anything
// further to a, b, or c.
p2ptest.RequireSend(t, a, p2p.Envelope{To: bID, Message: &p2ptest.Message{Value: "foo"}})
p2ptest.RequireReceive(t, b, p2p.Envelope{From: aID, Message: &p2ptest.Message{Value: "foo"}})
p2ptest.RequireEmpty(t, a, b, c)
// Sending a nil message a->b should be dropped.
p2ptest.RequireSend(t, a, p2p.Envelope{To: bID, Message: nil})
p2ptest.RequireEmpty(t, a, b, c)
// Sending a different message type should be dropped.
p2ptest.RequireSend(t, a, p2p.Envelope{To: bID, Message: &gogotypes.BoolValue{Value: true}})
p2ptest.RequireEmpty(t, a, b, c)
// Sending to an unknown peer should be dropped.
p2ptest.RequireSend(t, a, p2p.Envelope{
To: types.NodeID(strings.Repeat("a", 40)),
Message: &p2ptest.Message{Value: "a"},
})
p2ptest.RequireEmpty(t, a, b, c)
// Sending without a recipient should be dropped.
p2ptest.RequireSend(t, a, p2p.Envelope{Message: &p2ptest.Message{Value: "noto"}})
p2ptest.RequireEmpty(t, a, b, c)
// Sending to self should be dropped.
p2ptest.RequireSend(t, a, p2p.Envelope{To: aID, Message: &p2ptest.Message{Value: "self"}})
p2ptest.RequireEmpty(t, a, b, c)
// Removing b and sending to it should be dropped.
network.Remove(t, bID)
p2ptest.RequireSend(t, a, p2p.Envelope{To: bID, Message: &p2ptest.Message{Value: "nob"}})
p2ptest.RequireEmpty(t, a, b, c)
// After all this, sending a message c->a should work.
p2ptest.RequireSend(t, c, p2p.Envelope{To: aID, Message: &p2ptest.Message{Value: "bar"}})
p2ptest.RequireReceive(t, a, p2p.Envelope{From: cID, Message: &p2ptest.Message{Value: "bar"}})
p2ptest.RequireEmpty(t, a, b, c)
// None of these messages should have made it onto the other channels.
for _, other := range otherChannels {
p2ptest.RequireEmpty(t, other)
}
}
func TestRouter_Channel_Broadcast(t *testing.T) {
t.Cleanup(leaktest.Check(t))
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
// Create a test network and open a channel on all nodes.
network := p2ptest.MakeNetwork(ctx, t, p2ptest.NetworkOptions{NumNodes: 4})
ids := network.NodeIDs()
aID, bID, cID, dID := ids[0], ids[1], ids[2], ids[3]
channels := network.MakeChannels(t, chDesc)
a, b, c, d := channels[aID], channels[bID], channels[cID], channels[dID]
network.Start(t)
// Sending a broadcast from b should work.
p2ptest.RequireSend(t, b, p2p.Envelope{Broadcast: true, Message: &p2ptest.Message{Value: "foo"}})
p2ptest.RequireReceive(t, a, p2p.Envelope{From: bID, Message: &p2ptest.Message{Value: "foo"}})
p2ptest.RequireReceive(t, c, p2p.Envelope{From: bID, Message: &p2ptest.Message{Value: "foo"}})
p2ptest.RequireReceive(t, d, p2p.Envelope{From: bID, Message: &p2ptest.Message{Value: "foo"}})
p2ptest.RequireEmpty(t, a, b, c, d)
// Removing one node from the network shouldn't prevent broadcasts from working.
network.Remove(t, dID)
p2ptest.RequireSend(t, a, p2p.Envelope{Broadcast: true, Message: &p2ptest.Message{Value: "bar"}})
p2ptest.RequireReceive(t, b, p2p.Envelope{From: aID, Message: &p2ptest.Message{Value: "bar"}})
p2ptest.RequireReceive(t, c, p2p.Envelope{From: aID, Message: &p2ptest.Message{Value: "bar"}})
p2ptest.RequireEmpty(t, a, b, c, d)
}
func TestRouter_Channel_Wrapper(t *testing.T) {
t.Cleanup(leaktest.Check(t))
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
// Create a test network and open a channel on all nodes.
network := p2ptest.MakeNetwork(ctx, t, p2ptest.NetworkOptions{NumNodes: 2})
ids := network.NodeIDs()
aID, bID := ids[0], ids[1]
chDesc := &p2p.ChannelDescriptor{
ID: chID,
MessageType: &wrapperMessage{},
Priority: 5,
SendQueueCapacity: 10,
RecvMessageCapacity: 10,
}
channels := network.MakeChannels(t, chDesc)
a, b := channels[aID], channels[bID]
network.Start(t)
// Since wrapperMessage implements p2p.Wrapper and handles Message, it
// should automatically wrap and unwrap sent messages -- we prepend the
// wrapper actions to the message value to signal this.
p2ptest.RequireSend(t, a, p2p.Envelope{To: bID, Message: &p2ptest.Message{Value: "foo"}})
p2ptest.RequireReceive(t, b, p2p.Envelope{From: aID, Message: &p2ptest.Message{Value: "unwrap:wrap:foo"}})
// If we send a different message that can't be wrapped, it should be dropped.
p2ptest.RequireSend(t, a, p2p.Envelope{To: bID, Message: &gogotypes.BoolValue{Value: true}})
p2ptest.RequireEmpty(t, b)
// If we send the wrapper message itself, it should also be passed through
// since WrapperMessage supports it, and should only be unwrapped at the receiver.
p2ptest.RequireSend(t, a, p2p.Envelope{
To: bID,
Message: &wrapperMessage{Message: p2ptest.Message{Value: "foo"}},
})
p2ptest.RequireReceive(t, b, p2p.Envelope{
From: aID,
Message: &p2ptest.Message{Value: "unwrap:foo"},
})
}
// WrapperMessage prepends the value with "wrap:" and "unwrap:" to test it.
type wrapperMessage struct {
p2ptest.Message
}
var _ p2p.Wrapper = (*wrapperMessage)(nil)
func (w *wrapperMessage) Wrap(inner proto.Message) error {
switch inner := inner.(type) {
case *p2ptest.Message:
w.Message.Value = fmt.Sprintf("wrap:%v", inner.Value)
case *wrapperMessage:
*w = *inner
default:
return fmt.Errorf("invalid message type %T", inner)
}
return nil
}
func (w *wrapperMessage) Unwrap() (proto.Message, error) {
return &p2ptest.Message{Value: fmt.Sprintf("unwrap:%v", w.Message.Value)}, nil
}
func TestRouter_Channel_Error(t *testing.T) {
t.Cleanup(leaktest.Check(t))
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
// Create a test network and open a channel on all nodes.
network := p2ptest.MakeNetwork(ctx, t, p2ptest.NetworkOptions{NumNodes: 3})
network.Start(t)
ids := network.NodeIDs()
aID, bID := ids[0], ids[1]
channels := network.MakeChannels(t, chDesc)
a := channels[aID]
// Erroring b should cause it to be disconnected. It will reconnect shortly after.
sub := network.Nodes[aID].MakePeerUpdates(ctx, t)
p2ptest.RequireError(t, a, p2p.PeerError{NodeID: bID, Err: errors.New("boom")})
p2ptest.RequireUpdates(t, sub, []p2p.PeerUpdate{
{NodeID: bID, Status: p2p.PeerStatusDown},
{NodeID: bID, Status: p2p.PeerStatusUp},
})
}
func TestRouter_AcceptPeers(t *testing.T) {
testcases := map[string]struct {
peerInfo types.NodeInfo
peerKey crypto.PubKey
ok bool
}{
"valid handshake": {peerInfo, peerKey.PubKey(), true},
"empty handshake": {types.NodeInfo{}, nil, false},
"invalid key": {peerInfo, selfKey.PubKey(), false},
"self handshake": {selfInfo, selfKey.PubKey(), false},
"incompatible peer": {
types.NodeInfo{
NodeID: peerID,
ListenAddr: "0.0.0.0:0",
Network: "other-network",
Moniker: string(peerID),
},
peerKey.PubKey(),
false,
},
}
bctx, bcancel := context.WithCancel(context.Background())
defer bcancel()
for name, tc := range testcases {
tc := tc
t.Run(name, func(t *testing.T) {
ctx, cancel := context.WithCancel(bctx)
defer cancel()
t.Cleanup(leaktest.Check(t))
// Set up a mock transport that handshakes.
closer := tmsync.NewCloser()
mockConnection := &mocks.Connection{}
mockConnection.On("String").Maybe().Return("mock")
mockConnection.On("Handshake", mock.Anything, selfInfo, selfKey).
Return(tc.peerInfo, tc.peerKey, nil)
mockConnection.On("Close").Run(func(_ mock.Arguments) { closer.Close() }).Return(nil)
mockConnection.On("RemoteEndpoint").Return(p2p.Endpoint{})
if tc.ok {
// without the sleep after RequireUpdate this method isn't
// always called. Consider making this call optional.
mockConnection.On("ReceiveMessage").Return(chID, nil, io.EOF)
}
mockTransport := &mocks.Transport{}
mockTransport.On("String").Maybe().Return("mock")
mockTransport.On("Protocols").Return([]p2p.Protocol{"mock"})
mockTransport.On("Close").Return(nil)
mockTransport.On("Accept").Once().Return(mockConnection, nil)
mockTransport.On("Accept").Maybe().Return(nil, io.EOF)
// Set up and start the router.
peerManager, err := p2p.NewPeerManager(selfID, dbm.NewMemDB(), p2p.PeerManagerOptions{})
require.NoError(t, err)
defer peerManager.Close()
sub := peerManager.Subscribe()
defer sub.Close()
router, err := p2p.NewRouter(
log.TestingLogger(),
p2p.NopMetrics(),
selfInfo,
selfKey,
peerManager,
[]p2p.Transport{mockTransport},
nil,
p2p.RouterOptions{},
)
require.NoError(t, err)
require.NoError(t, router.Start(ctx))
if tc.ok {
p2ptest.RequireUpdate(t, sub, p2p.PeerUpdate{
NodeID: tc.peerInfo.NodeID,
Status: p2p.PeerStatusUp,
})
// force a context switch so that the
// connection is handled.
time.Sleep(time.Millisecond)
sub.Close()
} else {
select {
case <-closer.Done():
case <-time.After(100 * time.Millisecond):
require.Fail(t, "connection not closed")
}
}
require.NoError(t, router.Stop())
mockTransport.AssertExpectations(t)
mockConnection.AssertExpectations(t)
})
}
}
func TestRouter_AcceptPeers_Error(t *testing.T) {
t.Cleanup(leaktest.Check(t))
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
// Set up a mock transport that returns an error, which should prevent
// the router from calling Accept again.
mockTransport := &mocks.Transport{}
mockTransport.On("String").Maybe().Return("mock")
mockTransport.On("Protocols").Return([]p2p.Protocol{"mock"})
mockTransport.On("Accept").Once().Return(nil, errors.New("boom"))
mockTransport.On("Close").Return(nil)
// Set up and start the router.
peerManager, err := p2p.NewPeerManager(selfID, dbm.NewMemDB(), p2p.PeerManagerOptions{})
require.NoError(t, err)
defer peerManager.Close()
router, err := p2p.NewRouter(
log.TestingLogger(),
p2p.NopMetrics(),
selfInfo,
selfKey,
peerManager,
[]p2p.Transport{mockTransport},
nil,
p2p.RouterOptions{},
)
require.NoError(t, err)
require.NoError(t, router.Start(ctx))
time.Sleep(time.Second)
require.NoError(t, router.Stop())
mockTransport.AssertExpectations(t)
}
func TestRouter_AcceptPeers_ErrorEOF(t *testing.T) {
t.Cleanup(leaktest.Check(t))
// Set up a mock transport that returns io.EOF once, which should prevent
// the router from calling Accept again.
mockTransport := &mocks.Transport{}
mockTransport.On("String").Maybe().Return("mock")
mockTransport.On("Protocols").Return([]p2p.Protocol{"mock"})
mockTransport.On("Accept").Once().Return(nil, io.EOF)
mockTransport.On("Close").Return(nil)
// Set up and start the router.
peerManager, err := p2p.NewPeerManager(selfID, dbm.NewMemDB(), p2p.PeerManagerOptions{})
require.NoError(t, err)
defer peerManager.Close()
router, err := p2p.NewRouter(
log.TestingLogger(),
p2p.NopMetrics(),
selfInfo,
selfKey,
peerManager,
[]p2p.Transport{mockTransport},
nil,
p2p.RouterOptions{},
)
require.NoError(t, err)
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
require.NoError(t, router.Start(ctx))
time.Sleep(time.Second)
require.NoError(t, router.Stop())
mockTransport.AssertExpectations(t)
}
func TestRouter_AcceptPeers_HeadOfLineBlocking(t *testing.T) {
t.Cleanup(leaktest.Check(t))
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
// Set up a mock transport that returns a connection that blocks during the
// handshake. It should be able to accept several of these in parallel, i.e.
// a single connection can't halt other connections being accepted.
acceptCh := make(chan bool, 3)
closeCh := make(chan time.Time)
mockConnection := &mocks.Connection{}
mockConnection.On("String").Maybe().Return("mock")
mockConnection.On("Handshake", mock.Anything, selfInfo, selfKey).
WaitUntil(closeCh).Return(types.NodeInfo{}, nil, io.EOF)
mockConnection.On("Close").Return(nil)
mockConnection.On("RemoteEndpoint").Return(p2p.Endpoint{})
mockTransport := &mocks.Transport{}
mockTransport.On("String").Maybe().Return("mock")
mockTransport.On("Protocols").Return([]p2p.Protocol{"mock"})
mockTransport.On("Close").Return(nil)
mockTransport.On("Accept").Times(3).Run(func(_ mock.Arguments) {
acceptCh <- true
}).Return(mockConnection, nil)
mockTransport.On("Accept").Once().Return(nil, io.EOF)
// Set up and start the router.
peerManager, err := p2p.NewPeerManager(selfID, dbm.NewMemDB(), p2p.PeerManagerOptions{})
require.NoError(t, err)
defer peerManager.Close()
router, err := p2p.NewRouter(
log.TestingLogger(),
p2p.NopMetrics(),
selfInfo,
selfKey,
peerManager,
[]p2p.Transport{mockTransport},
nil,
p2p.RouterOptions{},
)
require.NoError(t, err)
require.NoError(t, router.Start(ctx))
require.Eventually(t, func() bool {
return len(acceptCh) == 3
}, time.Second, 10*time.Millisecond)
close(closeCh)
time.Sleep(100 * time.Millisecond)
require.NoError(t, router.Stop())
mockTransport.AssertExpectations(t)
mockConnection.AssertExpectations(t)
}
func TestRouter_DialPeers(t *testing.T) {
testcases := map[string]struct {
dialID types.NodeID
peerInfo types.NodeInfo
peerKey crypto.PubKey
dialErr error
ok bool
}{
"valid dial": {peerInfo.NodeID, peerInfo, peerKey.PubKey(), nil, true},
"empty handshake": {peerInfo.NodeID, types.NodeInfo{}, nil, nil, false},
"invalid key": {peerInfo.NodeID, peerInfo, selfKey.PubKey(), nil, false},
"unexpected node ID": {peerInfo.NodeID, selfInfo, selfKey.PubKey(), nil, false},
"dial error": {peerInfo.NodeID, peerInfo, peerKey.PubKey(), errors.New("boom"), false},
"incompatible peer": {
peerInfo.NodeID,
types.NodeInfo{
NodeID: peerID,
ListenAddr: "0.0.0.0:0",
Network: "other-network",
Moniker: string(peerID),
},
peerKey.PubKey(),
nil,
false,
},
}
bctx, bcancel := context.WithCancel(context.Background())
defer bcancel()
for name, tc := range testcases {
tc := tc
t.Run(name, func(t *testing.T) {
t.Cleanup(leaktest.Check(t))
ctx, cancel := context.WithCancel(bctx)
defer cancel()
address := p2p.NodeAddress{Protocol: "mock", NodeID: tc.dialID}
endpoint := p2p.Endpoint{Protocol: "mock", Path: string(tc.dialID)}
// Set up a mock transport that handshakes.
closer := tmsync.NewCloser()
mockConnection := &mocks.Connection{}
mockConnection.On("String").Maybe().Return("mock")
if tc.dialErr == nil {
mockConnection.On("Handshake", mock.Anything, selfInfo, selfKey).
Return(tc.peerInfo, tc.peerKey, nil)
mockConnection.On("Close").Run(func(_ mock.Arguments) { closer.Close() }).Return(nil)
}
if tc.ok {
// without the sleep after RequireUpdate this method isn't
// always called. Consider making this call optional.
mockConnection.On("ReceiveMessage").Return(chID, nil, io.EOF)
}
mockTransport := &mocks.Transport{}
mockTransport.On("String").Maybe().Return("mock")
mockTransport.On("Protocols").Return([]p2p.Protocol{"mock"})
mockTransport.On("Close").Return(nil)
mockTransport.On("Accept").Maybe().Return(nil, io.EOF)
if tc.dialErr == nil {
mockTransport.On("Dial", mock.Anything, endpoint).Once().Return(mockConnection, nil)
// This handles the retry when a dialed connection gets closed after ReceiveMessage
// returns io.EOF above.
mockTransport.On("Dial", mock.Anything, endpoint).Maybe().Return(nil, io.EOF)
} else {
mockTransport.On("Dial", mock.Anything, endpoint).Once().
Run(func(_ mock.Arguments) { closer.Close() }).
Return(nil, tc.dialErr)
}
// Set up and start the router.
peerManager, err := p2p.NewPeerManager(selfID, dbm.NewMemDB(), p2p.PeerManagerOptions{})
require.NoError(t, err)
defer peerManager.Close()
added, err := peerManager.Add(address)
require.NoError(t, err)
require.True(t, added)
sub := peerManager.Subscribe()
defer sub.Close()
router, err := p2p.NewRouter(
log.TestingLogger(),
p2p.NopMetrics(),
selfInfo,
selfKey,
peerManager,
[]p2p.Transport{mockTransport},
nil,
p2p.RouterOptions{},
)
require.NoError(t, err)
require.NoError(t, router.Start(ctx))
if tc.ok {
p2ptest.RequireUpdate(t, sub, p2p.PeerUpdate{
NodeID: tc.peerInfo.NodeID,
Status: p2p.PeerStatusUp,
})
// force a context switch so that the
// connection is handled.
time.Sleep(time.Millisecond)
sub.Close()
} else {
select {
case <-closer.Done():
case <-time.After(100 * time.Millisecond):
require.Fail(t, "connection not closed")
}
}
require.NoError(t, router.Stop())
mockTransport.AssertExpectations(t)
mockConnection.AssertExpectations(t)
})
}
}
func TestRouter_DialPeers_Parallel(t *testing.T) {
t.Cleanup(leaktest.Check(t))
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
a := p2p.NodeAddress{Protocol: "mock", NodeID: types.NodeID(strings.Repeat("a", 40))}
b := p2p.NodeAddress{Protocol: "mock", NodeID: types.NodeID(strings.Repeat("b", 40))}
c := p2p.NodeAddress{Protocol: "mock", NodeID: types.NodeID(strings.Repeat("c", 40))}
// Set up a mock transport that returns a connection that blocks during the
// handshake. It should dial all peers in parallel.
dialCh := make(chan bool, 3)
closeCh := make(chan time.Time)
mockConnection := &mocks.Connection{}
mockConnection.On("String").Maybe().Return("mock")
mockConnection.On("Handshake", mock.Anything, selfInfo, selfKey).
WaitUntil(closeCh).Return(types.NodeInfo{}, nil, io.EOF)
mockConnection.On("Close").Return(nil)
mockTransport := &mocks.Transport{}
mockTransport.On("String").Maybe().Return("mock")
mockTransport.On("Protocols").Return([]p2p.Protocol{"mock"})
mockTransport.On("Close").Return(nil)
mockTransport.On("Accept").Once().Return(nil, io.EOF)
for _, address := range []p2p.NodeAddress{a, b, c} {
endpoint := p2p.Endpoint{Protocol: address.Protocol, Path: string(address.NodeID)}
mockTransport.On("Dial", mock.Anything, endpoint).Run(func(_ mock.Arguments) {
dialCh <- true
}).Return(mockConnection, nil)
}
// Set up and start the router.
peerManager, err := p2p.NewPeerManager(selfID, dbm.NewMemDB(), p2p.PeerManagerOptions{})
require.NoError(t, err)
defer peerManager.Close()
added, err := peerManager.Add(a)
require.NoError(t, err)
require.True(t, added)
added, err = peerManager.Add(b)
require.NoError(t, err)
require.True(t, added)
added, err = peerManager.Add(c)
require.NoError(t, err)
require.True(t, added)
router, err := p2p.NewRouter(
log.TestingLogger(),
p2p.NopMetrics(),
selfInfo,
selfKey,
peerManager,
[]p2p.Transport{mockTransport},
nil,
p2p.RouterOptions{
DialSleep: func(_ context.Context) {},
NumConcurrentDials: func() int {
ncpu := runtime.NumCPU()
if ncpu <= 3 {
return 3
}
return ncpu
},
},
)
require.NoError(t, err)
require.NoError(t, router.Start(ctx))
require.Eventually(t,
func() bool {
return len(dialCh) == 3
},
5*time.Second,
100*time.Millisecond,
"reached %d rather than 3", len(dialCh))
close(closeCh)
time.Sleep(500 * time.Millisecond)
require.NoError(t, router.Stop())
mockTransport.AssertExpectations(t)
mockConnection.AssertExpectations(t)
}
func TestRouter_EvictPeers(t *testing.T) {
t.Cleanup(leaktest.Check(t))
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
// Set up a mock transport that we can evict.
closeCh := make(chan time.Time)
closeOnce := sync.Once{}
mockConnection := &mocks.Connection{}
mockConnection.On("String").Maybe().Return("mock")
mockConnection.On("Handshake", mock.Anything, selfInfo, selfKey).
Return(peerInfo, peerKey.PubKey(), nil)
mockConnection.On("ReceiveMessage").WaitUntil(closeCh).Return(chID, nil, io.EOF)
mockConnection.On("RemoteEndpoint").Return(p2p.Endpoint{})
mockConnection.On("Close").Run(func(_ mock.Arguments) {
closeOnce.Do(func() {
close(closeCh)
})
}).Return(nil)
mockTransport := &mocks.Transport{}
mockTransport.On("String").Maybe().Return("mock")
mockTransport.On("Protocols").Return([]p2p.Protocol{"mock"})
mockTransport.On("Close").Return(nil)
mockTransport.On("Accept").Once().Return(mockConnection, nil)
mockTransport.On("Accept").Maybe().Return(nil, io.EOF)
// Set up and start the router.
peerManager, err := p2p.NewPeerManager(selfID, dbm.NewMemDB(), p2p.PeerManagerOptions{})
require.NoError(t, err)
defer peerManager.Close()
sub := peerManager.Subscribe()
defer sub.Close()
router, err := p2p.NewRouter(
log.TestingLogger(),
p2p.NopMetrics(),
selfInfo,
selfKey,
peerManager,
[]p2p.Transport{mockTransport},
nil,
p2p.RouterOptions{},
)
require.NoError(t, err)
require.NoError(t, router.Start(ctx))
// Wait for the mock peer to connect, then evict it by reporting an error.
p2ptest.RequireUpdate(t, sub, p2p.PeerUpdate{
NodeID: peerInfo.NodeID,
Status: p2p.PeerStatusUp,
})
peerManager.Errored(peerInfo.NodeID, errors.New("boom"))
p2ptest.RequireUpdate(t, sub, p2p.PeerUpdate{
NodeID: peerInfo.NodeID,
Status: p2p.PeerStatusDown,
})
sub.Close()
require.NoError(t, router.Stop())
mockTransport.AssertExpectations(t)
mockConnection.AssertExpectations(t)
}
func TestRouter_ChannelCompatability(t *testing.T) {
t.Cleanup(leaktest.Check(t))
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
incompatiblePeer := types.NodeInfo{
NodeID: peerID,
ListenAddr: "0.0.0.0:0",
Network: "test",
Moniker: string(peerID),
Channels: []byte{0x03},
}
mockConnection := &mocks.Connection{}
mockConnection.On("String").Maybe().Return("mock")
mockConnection.On("Handshake", mock.Anything, selfInfo, selfKey).
Return(incompatiblePeer, peerKey.PubKey(), nil)
mockConnection.On("RemoteEndpoint").Return(p2p.Endpoint{})
mockConnection.On("Close").Return(nil)
mockTransport := &mocks.Transport{}
mockTransport.On("String").Maybe().Return("mock")
mockTransport.On("Protocols").Return([]p2p.Protocol{"mock"})
mockTransport.On("Close").Return(nil)
mockTransport.On("Accept").Once().Return(mockConnection, nil)
mockTransport.On("Accept").Once().Return(nil, io.EOF)
// Set up and start the router.
peerManager, err := p2p.NewPeerManager(selfID, dbm.NewMemDB(), p2p.PeerManagerOptions{})
require.NoError(t, err)
defer peerManager.Close()
router, err := p2p.NewRouter(
log.TestingLogger(),
p2p.NopMetrics(),
selfInfo,
selfKey,
peerManager,
[]p2p.Transport{mockTransport},
nil,
p2p.RouterOptions{},
)
require.NoError(t, err)
require.NoError(t, router.Start(ctx))
time.Sleep(1 * time.Second)
require.NoError(t, router.Stop())
require.Empty(t, peerManager.Peers())
mockConnection.AssertExpectations(t)
mockTransport.AssertExpectations(t)
}
func TestRouter_DontSendOnInvalidChannel(t *testing.T) {
t.Cleanup(leaktest.Check(t))
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
peer := types.NodeInfo{
NodeID: peerID,
ListenAddr: "0.0.0.0:0",
Network: "test",
Moniker: string(peerID),
Channels: []byte{0x02},
}
mockConnection := &mocks.Connection{}
mockConnection.On("String").Maybe().Return("mock")
mockConnection.On("Handshake", mock.Anything, selfInfo, selfKey).
Return(peer, peerKey.PubKey(), nil)
mockConnection.On("RemoteEndpoint").Return(p2p.Endpoint{})
mockConnection.On("Close").Return(nil)
mockConnection.On("ReceiveMessage").Return(chID, nil, io.EOF)
mockTransport := &mocks.Transport{}
mockTransport.On("AddChannelDescriptors", mock.Anything).Return()
mockTransport.On("String").Maybe().Return("mock")
mockTransport.On("Protocols").Return([]p2p.Protocol{"mock"})
mockTransport.On("Close").Return(nil)
mockTransport.On("Accept").Once().Return(mockConnection, nil)
mockTransport.On("Accept").Maybe().Return(nil, io.EOF)
// Set up and start the router.
peerManager, err := p2p.NewPeerManager(selfID, dbm.NewMemDB(), p2p.PeerManagerOptions{})
require.NoError(t, err)
defer peerManager.Close()
sub := peerManager.Subscribe()
defer sub.Close()
router, err := p2p.NewRouter(
log.TestingLogger(),
p2p.NopMetrics(),
selfInfo,
selfKey,
peerManager,
[]p2p.Transport{mockTransport},
nil,
p2p.RouterOptions{},
)
require.NoError(t, err)
require.NoError(t, router.Start(ctx))
p2ptest.RequireUpdate(t, sub, p2p.PeerUpdate{
NodeID: peerInfo.NodeID,
Status: p2p.PeerStatusUp,
})
channel, err := router.OpenChannel(chDesc)
require.NoError(t, err)
channel.Out <- p2p.Envelope{
To: peer.NodeID,
Message: &p2ptest.Message{Value: "Hi"},
}
require.NoError(t, router.Stop())
mockTransport.AssertExpectations(t)
}