lnd.xprv/discovery/gossiper_test.go

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package discovery
import (
"encoding/hex"
"fmt"
"net"
"reflect"
"sync"
prand "math/rand"
"testing"
"math/big"
"time"
"io/ioutil"
"os"
"github.com/btcsuite/btcd/btcec"
"github.com/btcsuite/btcd/chaincfg/chainhash"
"github.com/btcsuite/btcd/wire"
"github.com/davecgh/go-spew/spew"
"github.com/go-errors/errors"
"github.com/lightningnetwork/lnd/chainntnfs"
"github.com/lightningnetwork/lnd/channeldb"
"github.com/lightningnetwork/lnd/lnpeer"
2018-07-05 23:27:35 +03:00
"github.com/lightningnetwork/lnd/lnwallet"
"github.com/lightningnetwork/lnd/lnwire"
"github.com/lightningnetwork/lnd/routing"
)
var (
testAddr = &net.TCPAddr{IP: (net.IP)([]byte{0xA, 0x0, 0x0, 0x1}),
Port: 9000}
testAddrs = []net.Addr{testAddr}
testFeatures = lnwire.NewRawFeatureVector()
testSig = &btcec.Signature{
R: new(big.Int),
S: new(big.Int),
}
_, _ = testSig.R.SetString("63724406601629180062774974542967536251589935445068131219452686511677818569431", 10)
_, _ = testSig.S.SetString("18801056069249825825291287104931333862866033135609736119018462340006816851118", 10)
inputStr = "147caa76786596590baa4e98f5d9f48b86c7765e489f7a6ff3360fe5c674360b"
sha, _ = chainhash.NewHashFromStr(inputStr)
outpoint = wire.NewOutPoint(sha, 0)
bitcoinKeyPriv1, _ = btcec.NewPrivateKey(btcec.S256())
bitcoinKeyPub1 = bitcoinKeyPriv1.PubKey()
nodeKeyPriv1, _ = btcec.NewPrivateKey(btcec.S256())
nodeKeyPub1 = nodeKeyPriv1.PubKey()
bitcoinKeyPriv2, _ = btcec.NewPrivateKey(btcec.S256())
bitcoinKeyPub2 = bitcoinKeyPriv2.PubKey()
nodeKeyPriv2, _ = btcec.NewPrivateKey(btcec.S256())
nodeKeyPub2 = nodeKeyPriv2.PubKey()
trickleDelay = time.Millisecond * 100
retransmitDelay = time.Hour * 1
proofMatureDelta uint32
)
// makeTestDB creates a new instance of the ChannelDB for testing purposes. A
// callback which cleans up the created temporary directories is also returned
// and intended to be executed after the test completes.
func makeTestDB() (*channeldb.DB, func(), error) {
// First, create a temporary directory to be used for the duration of
// this test.
tempDirName, err := ioutil.TempDir("", "channeldb")
if err != nil {
return nil, nil, err
}
// Next, create channeldb for the first time.
cdb, err := channeldb.Open(tempDirName)
if err != nil {
return nil, nil, err
}
cleanUp := func() {
cdb.Close()
os.RemoveAll(tempDirName)
}
return cdb, cleanUp, nil
}
type mockSigner struct {
privKey *btcec.PrivateKey
}
func (n *mockSigner) SignMessage(pubKey *btcec.PublicKey,
msg []byte) (*btcec.Signature, error) {
if !pubKey.IsEqual(n.privKey.PubKey()) {
return nil, fmt.Errorf("unknown public key")
}
digest := chainhash.DoubleHashB(msg)
sign, err := n.privKey.Sign(digest)
if err != nil {
return nil, fmt.Errorf("can't sign the message: %v", err)
}
return sign, nil
}
type mockGraphSource struct {
nodes []*channeldb.LightningNode
infos map[uint64]*channeldb.ChannelEdgeInfo
edges map[uint64][]*channeldb.ChannelEdgePolicy
bestHeight uint32
}
func newMockRouter(height uint32) *mockGraphSource {
return &mockGraphSource{
bestHeight: height,
infos: make(map[uint64]*channeldb.ChannelEdgeInfo),
edges: make(map[uint64][]*channeldb.ChannelEdgePolicy),
}
}
var _ routing.ChannelGraphSource = (*mockGraphSource)(nil)
func (r *mockGraphSource) AddNode(node *channeldb.LightningNode) error {
r.nodes = append(r.nodes, node)
return nil
}
func (r *mockGraphSource) AddEdge(info *channeldb.ChannelEdgeInfo) error {
if _, ok := r.infos[info.ChannelID]; ok {
return errors.New("info already exist")
}
r.infos[info.ChannelID] = info
return nil
}
func (r *mockGraphSource) UpdateEdge(edge *channeldb.ChannelEdgePolicy) error {
r.edges[edge.ChannelID] = append(
r.edges[edge.ChannelID],
edge,
)
return nil
}
func (r *mockGraphSource) SelfEdges() ([]*channeldb.ChannelEdgePolicy, error) {
return nil, nil
}
func (r *mockGraphSource) CurrentBlockHeight() (uint32, error) {
return r.bestHeight, nil
}
func (r *mockGraphSource) AddProof(chanID lnwire.ShortChannelID,
proof *channeldb.ChannelAuthProof) error {
info, ok := r.infos[chanID.ToUint64()]
if !ok {
return errors.New("channel does not exist")
}
info.AuthProof = proof
return nil
}
func (r *mockGraphSource) ForEachNode(func(node *channeldb.LightningNode) error) error {
return nil
}
func (r *mockGraphSource) ForAllOutgoingChannels(cb func(i *channeldb.ChannelEdgeInfo,
c *channeldb.ChannelEdgePolicy) error) error {
return nil
}
func (r *mockGraphSource) ForEachChannel(func(chanInfo *channeldb.ChannelEdgeInfo,
e1, e2 *channeldb.ChannelEdgePolicy) error) error {
return nil
}
func (r *mockGraphSource) GetChannelByID(chanID lnwire.ShortChannelID) (
*channeldb.ChannelEdgeInfo,
*channeldb.ChannelEdgePolicy,
*channeldb.ChannelEdgePolicy, error) {
chanInfo, ok := r.infos[chanID.ToUint64()]
if !ok {
return nil, nil, nil, channeldb.ErrEdgeNotFound
}
edges := r.edges[chanID.ToUint64()]
if len(edges) == 0 {
return chanInfo, nil, nil, nil
}
if len(edges) == 1 {
return chanInfo, edges[0], nil, nil
}
return chanInfo, edges[0], edges[1], nil
}
// IsStaleNode returns true if the graph source has a node announcement for the
// target node with a more recent timestamp.
func (r *mockGraphSource) IsStaleNode(nodePub routing.Vertex, timestamp time.Time) bool {
for _, node := range r.nodes {
if node.PubKeyBytes == nodePub {
return node.LastUpdate.After(timestamp) ||
node.LastUpdate.Equal(timestamp)
}
}
return false
}
// IsKnownEdge returns true if the graph source already knows of the passed
// channel ID.
func (r *mockGraphSource) IsKnownEdge(chanID lnwire.ShortChannelID) bool {
_, ok := r.infos[chanID.ToUint64()]
return ok
}
// IsStaleEdgePolicy returns true if the graph source has a channel edge for
// the passed channel ID (and flags) that have a more recent timestamp.
func (r *mockGraphSource) IsStaleEdgePolicy(chanID lnwire.ShortChannelID,
timestamp time.Time, flags lnwire.ChanUpdateFlag) bool {
edges, ok := r.edges[chanID.ToUint64()]
if !ok {
return false
}
switch {
case len(edges) >= 1 && edges[0].Flags == flags:
return !edges[0].LastUpdate.Before(timestamp)
case len(edges) >= 2 && edges[1].Flags == flags:
return !edges[1].LastUpdate.Before(timestamp)
default:
return false
}
}
type mockNotifier struct {
clientCounter uint32
epochClients map[uint32]chan *chainntnfs.BlockEpoch
sync.RWMutex
}
func newMockNotifier() *mockNotifier {
return &mockNotifier{
epochClients: make(map[uint32]chan *chainntnfs.BlockEpoch),
}
}
func (m *mockNotifier) RegisterConfirmationsNtfn(txid *chainhash.Hash,
_ []byte, numConfs, _ uint32) (*chainntnfs.ConfirmationEvent, error) {
return nil, nil
}
func (m *mockNotifier) RegisterSpendNtfn(outpoint *wire.OutPoint, _ []byte,
_ uint32) (*chainntnfs.SpendEvent, error) {
return nil, nil
}
func (m *mockNotifier) notifyBlock(hash chainhash.Hash, height uint32) {
m.RLock()
defer m.RUnlock()
for _, client := range m.epochClients {
client <- &chainntnfs.BlockEpoch{
Height: int32(height),
Hash: &hash,
}
}
}
func (m *mockNotifier) RegisterBlockEpochNtfn() (*chainntnfs.BlockEpochEvent, error) {
m.RLock()
defer m.RUnlock()
epochChan := make(chan *chainntnfs.BlockEpoch)
clientID := m.clientCounter
m.clientCounter++
m.epochClients[clientID] = epochChan
return &chainntnfs.BlockEpochEvent{
Epochs: epochChan,
Cancel: func() {},
}, nil
}
func (m *mockNotifier) Start() error {
return nil
}
func (m *mockNotifier) Stop() error {
return nil
}
type annBatch struct {
nodeAnn1 *lnwire.NodeAnnouncement
nodeAnn2 *lnwire.NodeAnnouncement
localChanAnn *lnwire.ChannelAnnouncement
remoteChanAnn *lnwire.ChannelAnnouncement
chanUpdAnn1 *lnwire.ChannelUpdate
chanUpdAnn2 *lnwire.ChannelUpdate
localProofAnn *lnwire.AnnounceSignatures
remoteProofAnn *lnwire.AnnounceSignatures
}
func createAnnouncements(blockHeight uint32) (*annBatch, error) {
var err error
var batch annBatch
timestamp := uint32(123456)
batch.nodeAnn1, err = createNodeAnnouncement(nodeKeyPriv1, timestamp)
if err != nil {
return nil, err
}
batch.nodeAnn2, err = createNodeAnnouncement(nodeKeyPriv2, timestamp)
if err != nil {
return nil, err
}
batch.remoteChanAnn, err = createRemoteChannelAnnouncement(blockHeight)
if err != nil {
return nil, err
}
batch.localProofAnn = &lnwire.AnnounceSignatures{
NodeSignature: batch.remoteChanAnn.NodeSig1,
BitcoinSignature: batch.remoteChanAnn.BitcoinSig1,
}
batch.remoteProofAnn = &lnwire.AnnounceSignatures{
NodeSignature: batch.remoteChanAnn.NodeSig2,
BitcoinSignature: batch.remoteChanAnn.BitcoinSig2,
}
batch.localChanAnn, err = createRemoteChannelAnnouncement(blockHeight)
if err != nil {
return nil, err
}
batch.chanUpdAnn1, err = createUpdateAnnouncement(
blockHeight, 0, nodeKeyPriv1, timestamp,
)
if err != nil {
return nil, err
}
batch.chanUpdAnn2, err = createUpdateAnnouncement(
blockHeight, 1, nodeKeyPriv2, timestamp,
)
if err != nil {
return nil, err
}
return &batch, nil
}
func createNodeAnnouncement(priv *btcec.PrivateKey,
timestamp uint32) (*lnwire.NodeAnnouncement,
error) {
var err error
k := hex.EncodeToString(priv.Serialize())
alias, err := lnwire.NewNodeAlias("kek" + k[:10])
if err != nil {
return nil, err
}
a := &lnwire.NodeAnnouncement{
Timestamp: timestamp,
Addresses: testAddrs,
Alias: alias,
Features: testFeatures,
}
copy(a.NodeID[:], priv.PubKey().SerializeCompressed())
signer := mockSigner{priv}
sig, err := SignAnnouncement(&signer, priv.PubKey(), a)
if err != nil {
return nil, err
}
a.Signature, err = lnwire.NewSigFromSignature(sig)
if err != nil {
return nil, err
}
return a, nil
}
func createUpdateAnnouncement(blockHeight uint32, flags lnwire.ChanUpdateFlag,
nodeKey *btcec.PrivateKey, timestamp uint32) (*lnwire.ChannelUpdate,
error) {
var err error
a := &lnwire.ChannelUpdate{
ShortChannelID: lnwire.ShortChannelID{
BlockHeight: blockHeight,
},
Timestamp: timestamp,
TimeLockDelta: uint16(prand.Int63()),
Flags: flags,
HtlcMinimumMsat: lnwire.MilliSatoshi(prand.Int63()),
FeeRate: uint32(prand.Int31()),
BaseFee: uint32(prand.Int31()),
}
pub := nodeKey.PubKey()
signer := mockSigner{nodeKey}
sig, err := SignAnnouncement(&signer, pub, a)
if err != nil {
return nil, err
}
a.Signature, err = lnwire.NewSigFromSignature(sig)
if err != nil {
return nil, err
}
return a, nil
}
func createRemoteChannelAnnouncement(blockHeight uint32) (*lnwire.ChannelAnnouncement, error) {
var err error
a := &lnwire.ChannelAnnouncement{
ShortChannelID: lnwire.ShortChannelID{
BlockHeight: blockHeight,
TxIndex: 0,
TxPosition: 0,
},
Features: testFeatures,
}
copy(a.NodeID1[:], nodeKeyPub1.SerializeCompressed())
copy(a.NodeID2[:], nodeKeyPub2.SerializeCompressed())
copy(a.BitcoinKey1[:], bitcoinKeyPub1.SerializeCompressed())
copy(a.BitcoinKey2[:], bitcoinKeyPub2.SerializeCompressed())
pub := nodeKeyPriv1.PubKey()
signer := mockSigner{nodeKeyPriv1}
sig, err := SignAnnouncement(&signer, pub, a)
if err != nil {
return nil, err
}
a.NodeSig1, err = lnwire.NewSigFromSignature(sig)
if err != nil {
return nil, err
}
pub = nodeKeyPriv2.PubKey()
signer = mockSigner{nodeKeyPriv2}
sig, err = SignAnnouncement(&signer, pub, a)
if err != nil {
return nil, err
}
a.NodeSig2, err = lnwire.NewSigFromSignature(sig)
if err != nil {
return nil, err
}
pub = bitcoinKeyPriv1.PubKey()
signer = mockSigner{bitcoinKeyPriv1}
sig, err = SignAnnouncement(&signer, pub, a)
if err != nil {
return nil, err
}
a.BitcoinSig1, err = lnwire.NewSigFromSignature(sig)
if err != nil {
return nil, err
}
pub = bitcoinKeyPriv2.PubKey()
signer = mockSigner{bitcoinKeyPriv2}
sig, err = SignAnnouncement(&signer, pub, a)
if err != nil {
return nil, err
}
a.BitcoinSig2, err = lnwire.NewSigFromSignature(sig)
if err != nil {
return nil, err
}
return a, nil
}
type testCtx struct {
gossiper *AuthenticatedGossiper
router *mockGraphSource
notifier *mockNotifier
broadcastedMessage chan msgWithSenders
}
func createTestCtx(startHeight uint32) (*testCtx, func(), error) {
// Next we'll initialize an instance of the channel router with mock
// versions of the chain and channel notifier. As we don't need to test
// any p2p functionality, the peer send and switch send,
// broadcast functions won't be populated.
notifier := newMockNotifier()
router := newMockRouter(startHeight)
db, cleanUpDb, err := makeTestDB()
if err != nil {
return nil, nil, err
}
broadcastedMessage := make(chan msgWithSenders, 10)
gossiper, err := New(Config{
Notifier: notifier,
Broadcast: func(senders map[routing.Vertex]struct{},
msgs ...lnwire.Message) error {
for _, msg := range msgs {
broadcastedMessage <- msgWithSenders{
msg: msg,
senders: senders,
}
}
return nil
},
SendToPeer: func(target *btcec.PublicKey, msg ...lnwire.Message) error {
return nil
},
FindPeer: func(target *btcec.PublicKey) (lnpeer.Peer, error) {
return &mockPeer{target, nil, nil}, nil
},
Router: router,
TrickleDelay: trickleDelay,
RetransmitDelay: retransmitDelay,
ProofMatureDelta: proofMatureDelta,
DB: db,
}, nodeKeyPub1)
if err != nil {
cleanUpDb()
return nil, nil, fmt.Errorf("unable to create router %v", err)
}
if err := gossiper.Start(); err != nil {
cleanUpDb()
return nil, nil, fmt.Errorf("unable to start router: %v", err)
}
cleanUp := func() {
gossiper.Stop()
cleanUpDb()
}
return &testCtx{
router: router,
notifier: notifier,
gossiper: gossiper,
broadcastedMessage: broadcastedMessage,
}, cleanUp, nil
}
// TestProcessAnnouncement checks that mature announcements are propagated to
// the router subsystem.
func TestProcessAnnouncement(t *testing.T) {
t.Parallel()
timestamp := uint32(123456)
ctx, cleanup, err := createTestCtx(0)
if err != nil {
t.Fatalf("can't create context: %v", err)
}
defer cleanup()
assertSenderExistence := func(sender *btcec.PublicKey, msg msgWithSenders) {
if _, ok := msg.senders[routing.NewVertex(sender)]; !ok {
t.Fatalf("sender=%x not present in %v",
sender.SerializeCompressed(), spew.Sdump(msg))
}
}
// Create node valid, signed announcement, process it with
// gossiper service, check that valid announcement have been
// propagated farther into the lightning network, and check that we
// added new node into router.
na, err := createNodeAnnouncement(nodeKeyPriv1, timestamp)
if err != nil {
t.Fatalf("can't create node announcement: %v", err)
}
nodePeer := &mockPeer{nodeKeyPriv1.PubKey(), nil, nil}
select {
case err = <-ctx.gossiper.ProcessRemoteAnnouncement(na, nodePeer):
case <-time.After(2 * time.Second):
t.Fatal("remote announcement not processed")
}
if err != nil {
t.Fatalf("can't process remote announcement: %v", err)
}
select {
case msg := <-ctx.broadcastedMessage:
assertSenderExistence(nodePeer.IdentityKey(), msg)
case <-time.After(2 * trickleDelay):
t.Fatal("announcement wasn't proceeded")
}
if len(ctx.router.nodes) != 1 {
t.Fatalf("node wasn't added to router: %v", err)
}
// Pretending that we receive the valid channel announcement from
// remote side, and check that we broadcasted it to the our network,
// and added channel info in the router.
ca, err := createRemoteChannelAnnouncement(0)
if err != nil {
t.Fatalf("can't create channel announcement: %v", err)
}
select {
case err = <-ctx.gossiper.ProcessRemoteAnnouncement(ca, nodePeer):
case <-time.After(2 * time.Second):
t.Fatal("remote announcement not processed")
}
if err != nil {
t.Fatalf("can't process remote announcement: %v", err)
}
select {
case msg := <-ctx.broadcastedMessage:
assertSenderExistence(nodePeer.IdentityKey(), msg)
case <-time.After(2 * trickleDelay):
t.Fatal("announcement wasn't proceeded")
}
if len(ctx.router.infos) != 1 {
t.Fatalf("edge wasn't added to router: %v", err)
}
// Pretending that we received valid channel policy update from remote
// side, and check that we broadcasted it to the other network, and
// added updates to the router.
ua, err := createUpdateAnnouncement(0, 0, nodeKeyPriv1, timestamp)
if err != nil {
t.Fatalf("can't create update announcement: %v", err)
}
select {
case err = <-ctx.gossiper.ProcessRemoteAnnouncement(ua, nodePeer):
case <-time.After(2 * time.Second):
t.Fatal("remote announcement not processed")
}
if err != nil {
t.Fatalf("can't process remote announcement: %v", err)
}
select {
case msg := <-ctx.broadcastedMessage:
assertSenderExistence(nodePeer.IdentityKey(), msg)
case <-time.After(2 * trickleDelay):
t.Fatal("announcement wasn't proceeded")
}
if len(ctx.router.edges) != 1 {
t.Fatalf("edge update wasn't added to router: %v", err)
}
}
// TestPrematureAnnouncement checks that premature announcements are
// not propagated to the router subsystem until block with according
// block height received.
func TestPrematureAnnouncement(t *testing.T) {
t.Parallel()
timestamp := uint32(123456)
ctx, cleanup, err := createTestCtx(0)
if err != nil {
t.Fatalf("can't create context: %v", err)
}
defer cleanup()
_, err = createNodeAnnouncement(nodeKeyPriv1, timestamp)
if err != nil {
t.Fatalf("can't create node announcement: %v", err)
}
nodePeer := &mockPeer{nodeKeyPriv1.PubKey(), nil, nil}
// Pretending that we receive the valid channel announcement from
// remote side, but block height of this announcement is greater than
// highest know to us, for that reason it should be added to the
// repeat/premature batch.
ca, err := createRemoteChannelAnnouncement(1)
if err != nil {
t.Fatalf("can't create channel announcement: %v", err)
}
select {
case <-ctx.gossiper.ProcessRemoteAnnouncement(ca, nodePeer):
t.Fatal("announcement was proceeded")
case <-time.After(100 * time.Millisecond):
}
if len(ctx.router.infos) != 0 {
t.Fatal("edge was added to router")
}
// Pretending that we receive the valid channel update announcement from
// remote side, but block height of this announcement is greater than
// highest know to us, for that reason it should be added to the
// repeat/premature batch.
ua, err := createUpdateAnnouncement(1, 0, nodeKeyPriv1, timestamp)
if err != nil {
t.Fatalf("can't create update announcement: %v", err)
}
select {
case <-ctx.gossiper.ProcessRemoteAnnouncement(ua, nodePeer):
t.Fatal("announcement was proceeded")
case <-time.After(100 * time.Millisecond):
}
if len(ctx.router.edges) != 0 {
t.Fatal("edge update was added to router")
}
// Generate new block and waiting the previously added announcements
// to be proceeded.
newBlock := &wire.MsgBlock{}
ctx.notifier.notifyBlock(newBlock.Header.BlockHash(), 1)
select {
case <-ctx.broadcastedMessage:
case <-time.After(2 * trickleDelay):
t.Fatal("announcement wasn't broadcasted")
}
if len(ctx.router.infos) != 1 {
t.Fatalf("edge wasn't added to router: %v", err)
}
select {
case <-ctx.broadcastedMessage:
case <-time.After(2 * trickleDelay):
t.Fatal("announcement wasn't broadcasted")
}
if len(ctx.router.edges) != 1 {
t.Fatalf("edge update wasn't added to router: %v", err)
}
}
// TestSignatureAnnouncementLocalFirst ensures that the AuthenticatedGossiper
// properly processes partial and fully announcement signatures message.
func TestSignatureAnnouncementLocalFirst(t *testing.T) {
t.Parallel()
ctx, cleanup, err := createTestCtx(uint32(proofMatureDelta))
if err != nil {
t.Fatalf("can't create context: %v", err)
}
defer cleanup()
// Set up a channel that we can use to inspect the messages
// sent directly fromn the gossiper.
sentMsgs := make(chan lnwire.Message, 10)
ctx.gossiper.cfg.FindPeer = func(target *btcec.PublicKey) (lnpeer.Peer, error) {
return &mockPeer{target, sentMsgs, ctx.gossiper.quit}, nil
}
ctx.gossiper.cfg.SendToPeer = func(target *btcec.PublicKey, msg ...lnwire.Message) error {
select {
case sentMsgs <- msg[0]:
case <-ctx.gossiper.quit:
return fmt.Errorf("shutting down")
}
return nil
}
batch, err := createAnnouncements(0)
if err != nil {
t.Fatalf("can't generate announcements: %v", err)
}
localKey, err := btcec.ParsePubKey(batch.nodeAnn1.NodeID[:], btcec.S256())
if err != nil {
t.Fatalf("unable to parse pubkey: %v", err)
}
remoteKey, err := btcec.ParsePubKey(batch.nodeAnn2.NodeID[:], btcec.S256())
if err != nil {
t.Fatalf("unable to parse pubkey: %v", err)
}
remotePeer := &mockPeer{remoteKey, sentMsgs, ctx.gossiper.quit}
// Recreate lightning network topology. Initialize router with channel
// between two nodes.
select {
case err = <-ctx.gossiper.ProcessLocalAnnouncement(batch.localChanAnn,
localKey):
case <-time.After(2 * time.Second):
t.Fatal("did not process local announcement")
}
if err != nil {
t.Fatalf("unable to process :%v", err)
}
select {
case <-ctx.broadcastedMessage:
t.Fatal("channel announcement was broadcast")
case <-time.After(2 * trickleDelay):
}
select {
case err = <-ctx.gossiper.ProcessLocalAnnouncement(batch.chanUpdAnn1,
localKey):
case <-time.After(2 * time.Second):
t.Fatal("did not process local announcement")
}
if err != nil {
t.Fatalf("unable to process :%v", err)
}
select {
case <-ctx.broadcastedMessage:
t.Fatal("channel update announcement was broadcast")
case <-time.After(2 * trickleDelay):
}
// The local ChannelUpdate should now be sent directly to the remote peer,
// such that the edge can be used for routing, regardless if this channel
// is announced or not (private channel).
select {
case msg := <-sentMsgs:
if msg != batch.chanUpdAnn1 {
t.Fatalf("expected local channel update, instead got %v", msg)
}
case <-time.After(1 * time.Second):
t.Fatal("gossiper did not send channel update to peer")
}
select {
case err = <-ctx.gossiper.ProcessRemoteAnnouncement(batch.chanUpdAnn2,
remotePeer):
case <-time.After(2 * time.Second):
t.Fatal("did not process remote announcement")
}
if err != nil {
t.Fatalf("unable to process :%v", err)
}
select {
case <-ctx.broadcastedMessage:
t.Fatal("channel update announcement was broadcast")
case <-time.After(2 * trickleDelay):
}
// Pretending that we receive local channel announcement from funding
// manager, thereby kick off the announcement exchange process.
select {
case err = <-ctx.gossiper.ProcessLocalAnnouncement(batch.localProofAnn,
localKey):
case <-time.After(2 * time.Second):
t.Fatal("did not process remote announcement")
}
if err != nil {
t.Fatalf("unable to process :%v", err)
}
select {
case <-ctx.broadcastedMessage:
t.Fatal("announcements were broadcast")
case <-time.After(2 * trickleDelay):
}
number := 0
if err := ctx.gossiper.waitingProofs.ForAll(
func(*channeldb.WaitingProof) error {
number++
return nil
},
); err != nil {
t.Fatalf("unable to retrieve objects from store: %v", err)
}
if number != 1 {
t.Fatal("wrong number of objects in storage")
}
select {
case err = <-ctx.gossiper.ProcessRemoteAnnouncement(batch.remoteProofAnn,
remotePeer):
case <-time.After(2 * time.Second):
t.Fatal("did not process remote announcement")
}
if err != nil {
t.Fatalf("unable to process :%v", err)
}
for i := 0; i < 3; i++ {
select {
case <-ctx.broadcastedMessage:
case <-time.After(time.Second):
t.Fatal("announcement wasn't broadcast")
}
}
number = 0
if err := ctx.gossiper.waitingProofs.ForAll(
func(*channeldb.WaitingProof) error {
number++
return nil
},
); err != nil && err != channeldb.ErrWaitingProofNotFound {
t.Fatalf("unable to retrieve objects from store: %v", err)
}
if number != 0 {
t.Fatal("waiting proof should be removed from storage")
}
}
// TestOrphanSignatureAnnouncement ensures that the gossiper properly
// processes announcement with unknown channel ids.
func TestOrphanSignatureAnnouncement(t *testing.T) {
t.Parallel()
ctx, cleanup, err := createTestCtx(uint32(proofMatureDelta))
if err != nil {
t.Fatalf("can't create context: %v", err)
}
defer cleanup()
// Set up a channel that we can use to inspect the messages
// sent directly from the gossiper.
sentMsgs := make(chan lnwire.Message, 10)
ctx.gossiper.cfg.FindPeer = func(target *btcec.PublicKey) (lnpeer.Peer, error) {
return &mockPeer{target, sentMsgs, ctx.gossiper.quit}, nil
}
ctx.gossiper.cfg.SendToPeer = func(target *btcec.PublicKey, msg ...lnwire.Message) error {
select {
case sentMsgs <- msg[0]:
case <-ctx.gossiper.quit:
return fmt.Errorf("shutting down")
}
return nil
}
batch, err := createAnnouncements(0)
if err != nil {
t.Fatalf("can't generate announcements: %v", err)
}
localKey, err := btcec.ParsePubKey(batch.nodeAnn1.NodeID[:], btcec.S256())
if err != nil {
t.Fatalf("unable to parse pubkey: %v", err)
}
remoteKey, err := btcec.ParsePubKey(batch.nodeAnn2.NodeID[:], btcec.S256())
if err != nil {
t.Fatalf("unable to parse pubkey: %v", err)
}
remotePeer := &mockPeer{remoteKey, sentMsgs, ctx.gossiper.quit}
// Pretending that we receive local channel announcement from funding
// manager, thereby kick off the announcement exchange process, in
// this case the announcement should be added in the orphan batch
// because we haven't announce the channel yet.
select {
case err = <-ctx.gossiper.ProcessRemoteAnnouncement(batch.remoteProofAnn,
remotePeer):
case <-time.After(2 * time.Second):
t.Fatal("did not process remote announcement")
}
if err != nil {
t.Fatalf("unable to proceed announcement: %v", err)
}
number := 0
if err := ctx.gossiper.waitingProofs.ForAll(
func(*channeldb.WaitingProof) error {
number++
return nil
},
); err != nil {
t.Fatalf("unable to retrieve objects from store: %v", err)
}
if number != 1 {
t.Fatal("wrong number of objects in storage")
}
// Recreate lightning network topology. Initialize router with channel
// between two nodes.
select {
case err = <-ctx.gossiper.ProcessLocalAnnouncement(batch.localChanAnn,
localKey):
case <-time.After(2 * time.Second):
t.Fatal("did not process local announcement")
}
if err != nil {
t.Fatalf("unable to process: %v", err)
}
select {
case <-ctx.broadcastedMessage:
t.Fatal("channel announcement was broadcast")
case <-time.After(2 * trickleDelay):
}
select {
case err = <-ctx.gossiper.ProcessLocalAnnouncement(batch.chanUpdAnn1,
localKey):
case <-time.After(2 * time.Second):
t.Fatal("did not process local announcement")
}
if err != nil {
t.Fatalf("unable to process: %v", err)
}
select {
case <-ctx.broadcastedMessage:
t.Fatal("channel update announcement was broadcast")
case <-time.After(2 * trickleDelay):
}
// The local ChannelUpdate should now be sent directly to the remote peer,
// such that the edge can be used for routing, regardless if this channel
// is announced or not (private channel).
select {
case msg := <-sentMsgs:
if msg != batch.chanUpdAnn1 {
t.Fatalf("expected local channel update, instead got %v", msg)
}
case <-time.After(1 * time.Second):
t.Fatal("gossiper did not send channel update to peer")
}
select {
case err = <-ctx.gossiper.ProcessRemoteAnnouncement(batch.chanUpdAnn2,
remotePeer):
case <-time.After(2 * time.Second):
t.Fatal("did not process remote announcement")
}
if err != nil {
t.Fatalf("unable to process: %v", err)
}
select {
case <-ctx.broadcastedMessage:
t.Fatal("channel update announcement was broadcast")
case <-time.After(2 * trickleDelay):
}
// After that we process local announcement, and waiting to receive
// the channel announcement.
select {
case err = <-ctx.gossiper.ProcessLocalAnnouncement(batch.localProofAnn,
localKey):
case <-time.After(2 * time.Second):
t.Fatal("did not process remote announcement")
}
if err != nil {
t.Fatalf("unable to process: %v", err)
}
// The local proof should be sent to the remote peer.
select {
case msg := <-sentMsgs:
if msg != batch.localProofAnn {
t.Fatalf("expected local proof to be sent, got %v", msg)
}
case <-time.After(2 * time.Second):
t.Fatalf("local proof was not sent to peer")
}
// And since both remote and local announcements are processed, we
// should be broadcasting the final channel announcements.
for i := 0; i < 3; i++ {
select {
case <-ctx.broadcastedMessage:
case <-time.After(time.Second):
t.Fatal("announcement wasn't broadcast")
}
}
number = 0
if err := ctx.gossiper.waitingProofs.ForAll(
func(p *channeldb.WaitingProof) error {
number++
return nil
},
); err != nil {
t.Fatalf("unable to retrieve objects from store: %v", err)
}
if number != 0 {
t.Fatalf("wrong number of objects in storage: %v", number)
}
}
// Test that sending AnnounceSignatures to remote peer will continue
// to be tried until the peer comes online.
func TestSignatureAnnouncementRetry(t *testing.T) {
t.Parallel()
ctx, cleanup, err := createTestCtx(uint32(proofMatureDelta))
if err != nil {
t.Fatalf("can't create context: %v", err)
}
defer cleanup()
batch, err := createAnnouncements(0)
if err != nil {
t.Fatalf("can't generate announcements: %v", err)
}
localKey, err := btcec.ParsePubKey(batch.nodeAnn1.NodeID[:], btcec.S256())
if err != nil {
t.Fatalf("unable to parse pubkey: %v", err)
}
remoteKey, err := btcec.ParsePubKey(batch.nodeAnn2.NodeID[:], btcec.S256())
if err != nil {
t.Fatalf("unable to parse pubkey: %v", err)
}
remotePeer := &mockPeer{remoteKey, nil, nil}
// Recreate lightning network topology. Initialize router with channel
// between two nodes.
select {
case err = <-ctx.gossiper.ProcessLocalAnnouncement(batch.localChanAnn,
localKey):
case <-time.After(2 * time.Second):
t.Fatal("did not process local announcement")
}
if err != nil {
t.Fatalf("unable to process :%v", err)
}
select {
case <-ctx.broadcastedMessage:
t.Fatal("channel announcement was broadcast")
case <-time.After(2 * trickleDelay):
}
select {
case err = <-ctx.gossiper.ProcessLocalAnnouncement(batch.chanUpdAnn1,
localKey):
case <-time.After(2 * time.Second):
t.Fatal("did not process local announcement")
}
if err != nil {
t.Fatalf("unable to process :%v", err)
}
select {
case <-ctx.broadcastedMessage:
t.Fatal("channel update announcement was broadcast")
case <-time.After(2 * trickleDelay):
}
select {
case err = <-ctx.gossiper.ProcessRemoteAnnouncement(batch.chanUpdAnn2,
remotePeer):
case <-time.After(2 * time.Second):
t.Fatal("did not process remote announcement")
}
if err != nil {
t.Fatalf("unable to process :%v", err)
}
select {
case <-ctx.broadcastedMessage:
t.Fatal("channel update announcement was broadcast")
case <-time.After(2 * trickleDelay):
}
// Make the SendToPeer fail, simulating the peer being offline.
ctx.gossiper.cfg.SendToPeer = func(target *btcec.PublicKey,
msg ...lnwire.Message) error {
return fmt.Errorf("intentional error in SendToPeer")
}
// We expect the gossiper to register for a notification when the peer
// comes back online, so keep track of the channel it wants to get
// notified on.
notifyPeers := make(chan chan<- lnpeer.Peer, 1)
ctx.gossiper.cfg.NotifyWhenOnline = func(peer *btcec.PublicKey,
connectedChan chan<- lnpeer.Peer) {
notifyPeers <- connectedChan
}
// Pretending that we receive local channel announcement from funding
// manager, thereby kick off the announcement exchange process.
select {
case err = <-ctx.gossiper.ProcessLocalAnnouncement(batch.localProofAnn,
localKey):
case <-time.After(2 * time.Second):
t.Fatal("did not process local announcement")
}
if err != nil {
t.Fatalf("unable to process :%v", err)
}
// Since sending this local announcement proof to the remote will fail,
// the gossiper should register for a notification when the remote is
// online again.
var conChan chan<- lnpeer.Peer
select {
case conChan = <-notifyPeers:
case <-time.After(2 * time.Second):
t.Fatalf("gossiper did not ask to get notified when " +
"peer is online")
}
// Since both proofs are not yet exchanged, no message should be
// broadcasted yet.
select {
case <-ctx.broadcastedMessage:
t.Fatal("announcements were broadcast")
case <-time.After(2 * trickleDelay):
}
number := 0
if err := ctx.gossiper.waitingProofs.ForAll(
func(*channeldb.WaitingProof) error {
number++
return nil
},
); err != nil {
t.Fatalf("unable to retrieve objects from store: %v", err)
}
if number != 1 {
t.Fatal("wrong number of objects in storage")
}
// When the peer comes online, the gossiper gets notified, and should
// retry sending the AnnounceSignatures. We make the SendToPeer
// method work again.
sentToPeer := make(chan lnwire.Message, 1)
ctx.gossiper.cfg.SendToPeer = func(target *btcec.PublicKey,
msg ...lnwire.Message) error {
sentToPeer <- msg[0]
return nil
}
// Notify that peer is now online. This should trigger a new call
// to SendToPeer.
close(conChan)
select {
case <-sentToPeer:
case <-time.After(2 * time.Second):
t.Fatalf("gossiper did not send message when peer came online")
}
// Now give the gossiper the remote proof. This should trigger a
// broadcast of 3 messages (ChannelAnnouncement + 2 ChannelUpdate).
select {
case err = <-ctx.gossiper.ProcessRemoteAnnouncement(batch.remoteProofAnn,
remotePeer):
case <-time.After(2 * time.Second):
t.Fatal("did not process local announcement")
}
if err != nil {
t.Fatalf("unable to process :%v", err)
}
for i := 0; i < 3; i++ {
select {
case <-ctx.broadcastedMessage:
case <-time.After(time.Second):
t.Fatal("announcement wasn't broadcast")
}
}
number = 0
if err := ctx.gossiper.waitingProofs.ForAll(
func(*channeldb.WaitingProof) error {
number++
return nil
},
); err != nil && err != channeldb.ErrWaitingProofNotFound {
t.Fatalf("unable to retrieve objects from store: %v", err)
}
if number != 0 {
t.Fatal("waiting proof should be removed from storage")
}
}
// Test that if we restart the gossiper, it will retry sending the
// AnnounceSignatures to the peer if it did not succeed before
// shutting down, and the full channel proof is not yet assembled.
func TestSignatureAnnouncementRetryAtStartup(t *testing.T) {
t.Parallel()
ctx, cleanup, err := createTestCtx(uint32(proofMatureDelta))
if err != nil {
t.Fatalf("can't create context: %v", err)
}
defer cleanup()
batch, err := createAnnouncements(0)
if err != nil {
t.Fatalf("can't generate announcements: %v", err)
}
localKey, err := btcec.ParsePubKey(batch.nodeAnn1.NodeID[:], btcec.S256())
if err != nil {
t.Fatalf("unable to parse pubkey: %v", err)
}
remoteKey, err := btcec.ParsePubKey(batch.nodeAnn2.NodeID[:], btcec.S256())
if err != nil {
t.Fatalf("unable to parse pubkey: %v", err)
}
remotePeer := &mockPeer{remoteKey, nil, nil}
// Recreate lightning network topology. Initialize router with channel
// between two nodes.
select {
case err = <-ctx.gossiper.ProcessLocalAnnouncement(batch.localChanAnn,
localKey):
case <-time.After(2 * time.Second):
t.Fatal("did not process local announcement")
}
if err != nil {
t.Fatalf("unable to process :%v", err)
}
select {
case <-ctx.broadcastedMessage:
t.Fatal("channel announcement was broadcast")
case <-time.After(2 * trickleDelay):
}
select {
case err = <-ctx.gossiper.ProcessLocalAnnouncement(batch.chanUpdAnn1,
localKey):
case <-time.After(2 * time.Second):
t.Fatal("did not process local announcement")
}
if err != nil {
t.Fatalf("unable to process :%v", err)
}
select {
case <-ctx.broadcastedMessage:
t.Fatal("channel update announcement was broadcast")
case <-time.After(2 * trickleDelay):
}
select {
case err = <-ctx.gossiper.ProcessRemoteAnnouncement(batch.chanUpdAnn2,
remotePeer):
case <-time.After(2 * time.Second):
t.Fatal("did not process remote announcement")
}
if err != nil {
t.Fatalf("unable to process :%v", err)
}
select {
case <-ctx.broadcastedMessage:
t.Fatal("channel update announcement was broadcast")
case <-time.After(2 * trickleDelay):
}
// Make the SendToPeerFail, simulating the peer being offline.
ctx.gossiper.cfg.SendToPeer = func(target *btcec.PublicKey,
msg ...lnwire.Message) error {
return fmt.Errorf("intentional error in SendToPeer")
}
notifyPeers := make(chan chan<- lnpeer.Peer, 1)
ctx.gossiper.cfg.NotifyWhenOnline = func(peer *btcec.PublicKey,
connectedChan chan<- lnpeer.Peer) {
notifyPeers <- connectedChan
}
// Pretending that we receive local channel announcement from funding
// manager, thereby kick off the announcement exchange process.
select {
case err = <-ctx.gossiper.ProcessLocalAnnouncement(batch.localProofAnn,
localKey):
case <-time.After(2 * time.Second):
t.Fatal("did not process remote announcement")
}
if err != nil {
t.Fatalf("unable to process :%v", err)
}
// Since sending to the remote peer will fail, the gossiper should
// register for a notification when it comes back online.
var conChan chan<- lnpeer.Peer
select {
case conChan = <-notifyPeers:
case <-time.After(2 * time.Second):
t.Fatalf("gossiper did not ask to get notified when " +
"peer is online")
}
select {
case <-ctx.broadcastedMessage:
t.Fatal("announcements were broadcast")
case <-time.After(2 * trickleDelay):
}
number := 0
if err := ctx.gossiper.waitingProofs.ForAll(
func(*channeldb.WaitingProof) error {
number++
return nil
},
); err != nil {
t.Fatalf("unable to retrieve objects from store: %v", err)
}
if number != 1 {
t.Fatal("wrong number of objects in storage")
}
// Shut down gossiper, and restart. This should trigger a new attempt
// to send the message to the peer.
ctx.gossiper.Stop()
gossiper, err := New(Config{
Notifier: ctx.gossiper.cfg.Notifier,
Broadcast: ctx.gossiper.cfg.Broadcast,
SendToPeer: func(target *btcec.PublicKey,
msg ...lnwire.Message) error {
return fmt.Errorf("intentional error in SendToPeer")
},
NotifyWhenOnline: func(peer *btcec.PublicKey,
connectedChan chan<- lnpeer.Peer) {
notifyPeers <- connectedChan
},
Router: ctx.gossiper.cfg.Router,
TrickleDelay: trickleDelay,
RetransmitDelay: retransmitDelay,
ProofMatureDelta: proofMatureDelta,
DB: ctx.gossiper.cfg.DB,
}, ctx.gossiper.selfKey)
if err != nil {
t.Fatalf("unable to recreate gossiper: %v", err)
}
if err := gossiper.Start(); err != nil {
t.Fatalf("unable to start recreated gossiper: %v", err)
}
defer gossiper.Stop()
ctx.gossiper = gossiper
// After starting up, the gossiper will see that it has a waitingproof
// in the database, and will retry sending its part to the remote. Since
// SendToPeer will fail again, it should register for a notification
// when the peer comes online.
select {
case conChan = <-notifyPeers:
case <-time.After(2 * time.Second):
t.Fatalf("gossiper did not ask to get notified when " +
"peer is online")
}
// Fix the SendToPeer method.
sentToPeer := make(chan lnwire.Message, 1)
ctx.gossiper.cfg.SendToPeer = func(target *btcec.PublicKey,
msg ...lnwire.Message) error {
select {
case sentToPeer <- msg[0]:
case <-ctx.gossiper.quit:
return fmt.Errorf("shutting down")
}
return nil
}
// Notify that peer is now online. This should trigger a new call
// to SendToPeer.
close(conChan)
select {
case <-sentToPeer:
case <-time.After(2 * time.Second):
t.Fatalf("gossiper did not send message when peer came online")
}
// Now exchanging the remote channel proof, the channel announcement
// broadcast should continue as normal.
select {
case err = <-ctx.gossiper.ProcessRemoteAnnouncement(batch.remoteProofAnn,
remotePeer):
case <-time.After(2 * time.Second):
t.Fatal("did not process remote announcement")
}
if err != nil {
t.Fatalf("unable to process :%v", err)
}
for i := 0; i < 3; i++ {
select {
case <-ctx.broadcastedMessage:
case <-time.After(time.Second):
t.Fatal("announcement wasn't broadcast")
}
}
number = 0
if err := ctx.gossiper.waitingProofs.ForAll(
func(*channeldb.WaitingProof) error {
number++
return nil
},
); err != nil && err != channeldb.ErrWaitingProofNotFound {
t.Fatalf("unable to retrieve objects from store: %v", err)
}
if number != 0 {
t.Fatal("waiting proof should be removed from storage")
}
}
// TestSignatureAnnouncementFullProofWhenRemoteProof tests that if a
// remote proof is received when we already have the full proof,
// the gossiper will send the full proof (ChannelAnnouncement) to
// the remote peer.
func TestSignatureAnnouncementFullProofWhenRemoteProof(t *testing.T) {
t.Parallel()
ctx, cleanup, err := createTestCtx(uint32(proofMatureDelta))
if err != nil {
t.Fatalf("can't create context: %v", err)
}
defer cleanup()
batch, err := createAnnouncements(0)
if err != nil {
t.Fatalf("can't generate announcements: %v", err)
}
localKey, err := btcec.ParsePubKey(batch.nodeAnn1.NodeID[:], btcec.S256())
if err != nil {
t.Fatalf("unable to parse pubkey: %v", err)
}
remoteKey, err := btcec.ParsePubKey(batch.nodeAnn2.NodeID[:], btcec.S256())
if err != nil {
t.Fatalf("unable to parse pubkey: %v", err)
}
remotePeer := &mockPeer{remoteKey, nil, nil}
// Recreate lightning network topology. Initialize router with channel
// between two nodes.
select {
case err = <-ctx.gossiper.ProcessLocalAnnouncement(batch.localChanAnn,
localKey):
case <-time.After(2 * time.Second):
t.Fatal("did not process local announcement")
}
if err != nil {
t.Fatalf("unable to process :%v", err)
}
select {
case <-ctx.broadcastedMessage:
t.Fatal("channel announcement was broadcast")
case <-time.After(2 * trickleDelay):
}
select {
case err = <-ctx.gossiper.ProcessLocalAnnouncement(batch.chanUpdAnn1,
localKey):
case <-time.After(2 * time.Second):
t.Fatal("did not process local announcement")
}
if err != nil {
t.Fatalf("unable to process :%v", err)
}
select {
case <-ctx.broadcastedMessage:
t.Fatal("channel update announcement was broadcast")
case <-time.After(2 * trickleDelay):
}
select {
case err = <-ctx.gossiper.ProcessRemoteAnnouncement(batch.chanUpdAnn2,
remotePeer):
case <-time.After(2 * time.Second):
t.Fatal("did not process remote announcement")
}
if err != nil {
t.Fatalf("unable to process :%v", err)
}
select {
case <-ctx.broadcastedMessage:
t.Fatal("channel update announcement was broadcast")
case <-time.After(2 * trickleDelay):
}
// Set up a channel we can use to inspect messages sent by the
// gossiper to the remote peer.
sentToPeer := make(chan lnwire.Message, 1)
remotePeer.sentMsgs = sentToPeer
remotePeer.quit = ctx.gossiper.quit
ctx.gossiper.cfg.SendToPeer = func(target *btcec.PublicKey,
msg ...lnwire.Message) error {
select {
case <-ctx.gossiper.quit:
return fmt.Errorf("gossiper shutting down")
case sentToPeer <- msg[0]:
}
return nil
}
notifyPeers := make(chan chan<- lnpeer.Peer, 1)
ctx.gossiper.cfg.NotifyWhenOnline = func(peer *btcec.PublicKey,
connectedChan chan<- lnpeer.Peer) {
notifyPeers <- connectedChan
}
// Pretending that we receive local channel announcement from funding
// manager, thereby kick off the announcement exchange process.
select {
case err = <-ctx.gossiper.ProcessLocalAnnouncement(batch.localProofAnn,
localKey):
case <-time.After(2 * time.Second):
t.Fatal("did not process local announcement")
}
if err != nil {
t.Fatalf("unable to process :%v", err)
}
select {
case err = <-ctx.gossiper.ProcessRemoteAnnouncement(batch.remoteProofAnn,
remotePeer):
case <-time.After(2 * time.Second):
t.Fatal("did not process local announcement")
}
if err != nil {
t.Fatalf("unable to process :%v", err)
}
// We expect the gossiper to send this message to the remote peer.
select {
case msg := <-sentToPeer:
if msg != batch.localProofAnn {
t.Fatalf("wrong message sent to peer: %v", msg)
}
case <-time.After(2 * time.Second):
t.Fatal("did not send local proof to peer")
}
// And all channel announcements should be broadcast.
for i := 0; i < 3; i++ {
select {
case <-ctx.broadcastedMessage:
case <-time.After(time.Second):
t.Fatal("announcement wasn't broadcast")
}
}
number := 0
if err := ctx.gossiper.waitingProofs.ForAll(
func(*channeldb.WaitingProof) error {
number++
return nil
},
); err != nil && err != channeldb.ErrWaitingProofNotFound {
t.Fatalf("unable to retrieve objects from store: %v", err)
}
if number != 0 {
t.Fatal("waiting proof should be removed from storage")
}
// Now give the gossiper the remote proof yet again. This should
// trigger a send of the full ChannelAnnouncement.
select {
case err = <-ctx.gossiper.ProcessRemoteAnnouncement(batch.remoteProofAnn,
remotePeer):
case <-time.After(2 * time.Second):
t.Fatal("did not process local announcement")
}
if err != nil {
t.Fatalf("unable to process :%v", err)
}
// We expect the gossiper to send this message to the remote peer.
select {
case msg := <-sentToPeer:
_, ok := msg.(*lnwire.ChannelAnnouncement)
if !ok {
t.Fatalf("expected ChannelAnnouncement, instead got %T", msg)
}
case <-time.After(2 * time.Second):
t.Fatal("did not send local proof to peer")
}
}
// TestDeDuplicatedAnnouncements ensures that the deDupedAnnouncements struct
// properly stores and delivers the set of de-duplicated announcements.
func TestDeDuplicatedAnnouncements(t *testing.T) {
t.Parallel()
timestamp := uint32(123456)
announcements := deDupedAnnouncements{}
announcements.Reset()
// Ensure that after new deDupedAnnouncements struct is created and
// reset that storage of each announcement type is empty.
if len(announcements.channelAnnouncements) != 0 {
t.Fatal("channel announcements map not empty after reset")
}
if len(announcements.channelUpdates) != 0 {
t.Fatal("channel updates map not empty after reset")
}
if len(announcements.nodeAnnouncements) != 0 {
t.Fatal("node announcements map not empty after reset")
}
// Ensure that remote channel announcements are properly stored
// and de-duplicated.
ca, err := createRemoteChannelAnnouncement(0)
if err != nil {
t.Fatalf("can't create remote channel announcement: %v", err)
}
nodePeer := &mockPeer{bitcoinKeyPub2, nil, nil}
announcements.AddMsgs(networkMsg{
msg: ca,
peer: nodePeer,
source: nodePeer.IdentityKey(),
})
if len(announcements.channelAnnouncements) != 1 {
t.Fatal("new channel announcement not stored in batch")
}
// We'll create a second instance of the same announcement with the
// same channel ID. Adding this shouldn't cause an increase in the
// number of items as they should be de-duplicated.
ca2, err := createRemoteChannelAnnouncement(0)
if err != nil {
t.Fatalf("can't create remote channel announcement: %v", err)
}
announcements.AddMsgs(networkMsg{
msg: ca2,
peer: nodePeer,
source: nodePeer.IdentityKey(),
})
if len(announcements.channelAnnouncements) != 1 {
t.Fatal("channel announcement not replaced in batch")
}
// Next, we'll ensure that channel update announcements are properly
// stored and de-duplicated. We do this by creating two updates
// announcements with the same short ID and flag.
ua, err := createUpdateAnnouncement(0, 0, nodeKeyPriv1, timestamp)
if err != nil {
t.Fatalf("can't create update announcement: %v", err)
}
announcements.AddMsgs(networkMsg{
msg: ua,
peer: nodePeer,
source: nodePeer.IdentityKey(),
})
if len(announcements.channelUpdates) != 1 {
t.Fatal("new channel update not stored in batch")
}
// Adding the very same announcement shouldn't cause an increase in the
// number of ChannelUpdate announcements stored.
ua2, err := createUpdateAnnouncement(0, 0, nodeKeyPriv1, timestamp)
if err != nil {
t.Fatalf("can't create update announcement: %v", err)
}
announcements.AddMsgs(networkMsg{
msg: ua2,
peer: nodePeer,
source: nodePeer.IdentityKey(),
})
if len(announcements.channelUpdates) != 1 {
t.Fatal("channel update not replaced in batch")
}
// Adding an announcement with a later timestamp should replace the
// stored one.
ua3, err := createUpdateAnnouncement(0, 0, nodeKeyPriv1, timestamp+1)
if err != nil {
t.Fatalf("can't create update announcement: %v", err)
}
announcements.AddMsgs(networkMsg{
msg: ua3,
peer: nodePeer,
source: nodePeer.IdentityKey(),
})
if len(announcements.channelUpdates) != 1 {
t.Fatal("channel update not replaced in batch")
}
assertChannelUpdate := func(channelUpdate *lnwire.ChannelUpdate) {
channelKey := channelUpdateID{
ua3.ShortChannelID,
ua3.Flags,
}
mws, ok := announcements.channelUpdates[channelKey]
if !ok {
t.Fatal("channel update not in batch")
}
if mws.msg != channelUpdate {
t.Fatalf("expected channel update %v, got %v)",
channelUpdate, mws.msg)
}
}
// Check that ua3 is the currently stored channel update.
assertChannelUpdate(ua3)
// Adding a channel update with an earlier timestamp should NOT
// replace the one stored.
ua4, err := createUpdateAnnouncement(0, 0, nodeKeyPriv1, timestamp)
if err != nil {
t.Fatalf("can't create update announcement: %v", err)
}
announcements.AddMsgs(networkMsg{
msg: ua4,
peer: nodePeer,
source: nodePeer.IdentityKey(),
})
if len(announcements.channelUpdates) != 1 {
t.Fatal("channel update not in batch")
}
assertChannelUpdate(ua3)
// Next well ensure that node announcements are properly de-duplicated.
// We'll first add a single instance with a node's private key.
na, err := createNodeAnnouncement(nodeKeyPriv1, timestamp)
if err != nil {
t.Fatalf("can't create node announcement: %v", err)
}
announcements.AddMsgs(networkMsg{
msg: na,
peer: nodePeer,
source: nodePeer.IdentityKey(),
})
if len(announcements.nodeAnnouncements) != 1 {
t.Fatal("new node announcement not stored in batch")
}
// We'll now add another node to the batch.
na2, err := createNodeAnnouncement(nodeKeyPriv2, timestamp)
if err != nil {
t.Fatalf("can't create node announcement: %v", err)
}
announcements.AddMsgs(networkMsg{
msg: na2,
peer: nodePeer,
source: nodePeer.IdentityKey(),
})
if len(announcements.nodeAnnouncements) != 2 {
t.Fatal("second node announcement not stored in batch")
}
// Adding a new instance of the _same_ node shouldn't increase the size
// of the node ann batch.
na3, err := createNodeAnnouncement(nodeKeyPriv2, timestamp)
if err != nil {
t.Fatalf("can't create node announcement: %v", err)
}
announcements.AddMsgs(networkMsg{
msg: na3,
peer: nodePeer,
source: nodePeer.IdentityKey(),
})
if len(announcements.nodeAnnouncements) != 2 {
t.Fatal("second node announcement not replaced in batch")
}
// Ensure that node announcement with different pointer to same public
// key is still de-duplicated.
newNodeKeyPointer := nodeKeyPriv2
na4, err := createNodeAnnouncement(newNodeKeyPointer, timestamp)
if err != nil {
t.Fatalf("can't create node announcement: %v", err)
}
announcements.AddMsgs(networkMsg{
msg: na4,
peer: nodePeer,
source: nodePeer.IdentityKey(),
})
if len(announcements.nodeAnnouncements) != 2 {
t.Fatal("second node announcement not replaced again in batch")
}
// Ensure that node announcement with increased timestamp replaces
// what is currently stored.
na5, err := createNodeAnnouncement(nodeKeyPriv2, timestamp+1)
if err != nil {
t.Fatalf("can't create node announcement: %v", err)
}
announcements.AddMsgs(networkMsg{
msg: na5,
peer: nodePeer,
source: nodePeer.IdentityKey(),
})
if len(announcements.nodeAnnouncements) != 2 {
t.Fatal("node announcement not replaced in batch")
}
nodeID := routing.NewVertex(nodeKeyPriv2.PubKey())
stored, ok := announcements.nodeAnnouncements[nodeID]
if !ok {
t.Fatalf("node announcement not found in batch")
}
if stored.msg != na5 {
t.Fatalf("expected de-duped node announcement to be %v, got %v",
na5, stored.msg)
}
// Ensure that announcement batch delivers channel announcements,
// channel updates, and node announcements in proper order.
batch := announcements.Emit()
if len(batch) != 4 {
t.Fatal("announcement batch incorrect length")
}
if !reflect.DeepEqual(batch[0].msg, ca2) {
t.Fatalf("channel announcement not first in batch: got %v, "+
"expected %v", spew.Sdump(batch[0].msg), spew.Sdump(ca2))
}
if !reflect.DeepEqual(batch[1].msg, ua3) {
t.Fatalf("channel update not next in batch: got %v, "+
"expected %v", spew.Sdump(batch[1].msg), spew.Sdump(ua2))
}
// We'll ensure that both node announcements are present. We check both
// indexes as due to the randomized order of map iteration they may be
// in either place.
if !reflect.DeepEqual(batch[2].msg, na) && !reflect.DeepEqual(batch[3].msg, na) {
t.Fatal("first node announcement not in last part of batch: "+
"got %v, expected %v", batch[2].msg,
na)
}
if !reflect.DeepEqual(batch[2].msg, na5) && !reflect.DeepEqual(batch[3].msg, na5) {
t.Fatalf("second node announcement not in last part of batch: "+
"got %v, expected %v", batch[3].msg,
na5)
}
// Ensure that after reset, storage of each announcement type
// in deDupedAnnouncements struct is empty again.
announcements.Reset()
if len(announcements.channelAnnouncements) != 0 {
t.Fatal("channel announcements map not empty after reset")
}
if len(announcements.channelUpdates) != 0 {
t.Fatal("channel updates map not empty after reset")
}
if len(announcements.nodeAnnouncements) != 0 {
t.Fatal("node announcements map not empty after reset")
}
}
// TestReceiveRemoteChannelUpdateFirst tests that if we receive a
// ChannelUpdate from the remote before we have processed our
// own ChannelAnnouncement, it will be reprocessed later, after
// our ChannelAnnouncement.
func TestReceiveRemoteChannelUpdateFirst(t *testing.T) {
t.Parallel()
ctx, cleanup, err := createTestCtx(uint32(proofMatureDelta))
if err != nil {
t.Fatalf("can't create context: %v", err)
}
defer cleanup()
// Set up a channel that we can use to inspect the messages
// sent directly fromn the gossiper.
sentMsgs := make(chan lnwire.Message, 10)
ctx.gossiper.cfg.FindPeer = func(target *btcec.PublicKey) (lnpeer.Peer, error) {
return &mockPeer{target, sentMsgs, ctx.gossiper.quit}, nil
}
ctx.gossiper.cfg.SendToPeer = func(target *btcec.PublicKey, msg ...lnwire.Message) error {
select {
case sentMsgs <- msg[0]:
case <-ctx.gossiper.quit:
return fmt.Errorf("shutting down")
}
return nil
}
batch, err := createAnnouncements(0)
if err != nil {
t.Fatalf("can't generate announcements: %v", err)
}
localKey, err := btcec.ParsePubKey(batch.nodeAnn1.NodeID[:], btcec.S256())
if err != nil {
t.Fatalf("unable to parse pubkey: %v", err)
}
remoteKey, err := btcec.ParsePubKey(batch.nodeAnn2.NodeID[:], btcec.S256())
if err != nil {
t.Fatalf("unable to parse pubkey: %v", err)
}
remotePeer := &mockPeer{remoteKey, nil, nil}
// Recreate the case where the remote node is sending us its ChannelUpdate
// before we have been able to process our own ChannelAnnouncement and
// ChannelUpdate.
err = <-ctx.gossiper.ProcessRemoteAnnouncement(batch.chanUpdAnn2, remotePeer)
if err != nil {
t.Fatalf("unable to process :%v", err)
}
select {
case <-ctx.broadcastedMessage:
t.Fatal("channel update announcement was broadcast")
case <-time.After(2 * trickleDelay):
}
// Since the remote ChannelUpdate was added for an edge that
// we did not already know about, it should have been added
// to the map of premature ChannelUpdates. Check that nothing
// was added to the graph.
chanInfo, e1, e2, err := ctx.router.GetChannelByID(batch.chanUpdAnn1.ShortChannelID)
if err != channeldb.ErrEdgeNotFound {
t.Fatalf("Expected ErrEdgeNotFound, got: %v", err)
}
if chanInfo != nil {
t.Fatalf("chanInfo was not nil")
}
if e1 != nil {
t.Fatalf("e1 was not nil")
}
if e2 != nil {
t.Fatalf("e2 was not nil")
}
// Recreate lightning network topology. Initialize router with channel
// between two nodes.
err = <-ctx.gossiper.ProcessLocalAnnouncement(batch.localChanAnn, localKey)
if err != nil {
t.Fatalf("unable to process :%v", err)
}
select {
case <-ctx.broadcastedMessage:
t.Fatal("channel announcement was broadcast")
case <-time.After(2 * trickleDelay):
}
err = <-ctx.gossiper.ProcessLocalAnnouncement(batch.chanUpdAnn1, localKey)
if err != nil {
t.Fatalf("unable to process :%v", err)
}
select {
case <-ctx.broadcastedMessage:
t.Fatal("channel update announcement was broadcast")
case <-time.After(2 * trickleDelay):
}
// The local ChannelUpdate should now be sent directly to the remote peer,
// such that the edge can be used for routing, regardless if this channel
// is announced or not (private channel).
select {
case msg := <-sentMsgs:
if msg != batch.chanUpdAnn1 {
t.Fatalf("expected local channel update, instead got %v", msg)
}
case <-time.After(1 * time.Second):
t.Fatal("gossiper did not send channel update to peer")
}
// At this point the remote ChannelUpdate we received earlier should
// be reprocessed, as we now have the necessary edge entry in the graph.
// Check that the ChannelEdgePolicy was added to the graph.
chanInfo, e1, e2, err = ctx.router.GetChannelByID(batch.chanUpdAnn1.ShortChannelID)
if err != nil {
t.Fatalf("unable to get channel from router: %v", err)
}
if chanInfo == nil {
t.Fatalf("chanInfo was nil")
}
if e1 == nil {
t.Fatalf("e1 was nil")
}
if e2 == nil {
t.Fatalf("e2 was nil")
}
// Pretending that we receive local channel announcement from funding
// manager, thereby kick off the announcement exchange process.
err = <-ctx.gossiper.ProcessLocalAnnouncement(batch.localProofAnn, localKey)
if err != nil {
t.Fatalf("unable to process :%v", err)
}
select {
case <-ctx.broadcastedMessage:
t.Fatal("announcements were broadcast")
case <-time.After(2 * trickleDelay):
}
number := 0
if err := ctx.gossiper.waitingProofs.ForAll(
func(*channeldb.WaitingProof) error {
number++
return nil
},
); err != nil {
t.Fatalf("unable to retrieve objects from store: %v", err)
}
if number != 1 {
t.Fatal("wrong number of objects in storage")
}
err = <-ctx.gossiper.ProcessRemoteAnnouncement(batch.remoteProofAnn, remotePeer)
if err != nil {
t.Fatalf("unable to process :%v", err)
}
for i := 0; i < 3; i++ {
select {
case <-ctx.broadcastedMessage:
case <-time.After(time.Second):
t.Fatal("announcement wasn't broadcast")
}
}
number = 0
if err := ctx.gossiper.waitingProofs.ForAll(
func(*channeldb.WaitingProof) error {
number++
return nil
},
); err != nil && err != channeldb.ErrWaitingProofNotFound {
t.Fatalf("unable to retrieve objects from store: %v", err)
}
if number != 0 {
t.Fatal("waiting proof should be removed from storage")
}
}
// mockPeer implements the lnpeer.Peer interface and is used to test the
// gossiper's interaction with peers.
type mockPeer struct {
pk *btcec.PublicKey
sentMsgs chan lnwire.Message
quit chan struct{}
}
var _ lnpeer.Peer = (*mockPeer)(nil)
func (p *mockPeer) SendMessage(_ bool, msgs ...lnwire.Message) error {
if p.sentMsgs == nil && p.quit == nil {
return nil
}
for _, msg := range msgs {
select {
case p.sentMsgs <- msg:
case <-p.quit:
}
}
return nil
}
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func (p *mockPeer) AddNewChannel(_ *lnwallet.LightningChannel, _ <-chan struct{}) error {
return nil
}
func (p *mockPeer) WipeChannel(_ *wire.OutPoint) error { return nil }
func (p *mockPeer) IdentityKey() *btcec.PublicKey { return p.pk }
func (p *mockPeer) PubKey() [33]byte {
var pubkey [33]byte
copy(pubkey[:], p.pk.SerializeCompressed())
return pubkey
}
2018-07-05 23:27:35 +03:00
func (p *mockPeer) Address() net.Addr { return nil }