00814dc7c1
This commit makes the outgoing link pipeline the settle to the switch as soon as it receives it. Previously, it would wait for a revocation before sending it, which caused increased latency on payments as well as possibly never settling on the incoming link. A duplicate settle is still sent to the switch, but it is handled gracefully. A new AckEventTicker was added to the switch which acknowledges any pending settle / fail entries in an outgoing link's fwd pkgs in batch. This was needed in order to reduce the number of db txn's which would have been incurred by acking whenever we receive a duplicate settle without batching.
433 lines
12 KiB
Go
433 lines
12 KiB
Go
package lnd
|
|
|
|
import (
|
|
"bytes"
|
|
crand "crypto/rand"
|
|
"encoding/binary"
|
|
"io"
|
|
"io/ioutil"
|
|
"math/rand"
|
|
"net"
|
|
"os"
|
|
"time"
|
|
|
|
"github.com/btcsuite/btcd/btcec"
|
|
"github.com/btcsuite/btcd/chaincfg/chainhash"
|
|
"github.com/btcsuite/btcd/wire"
|
|
"github.com/btcsuite/btcutil"
|
|
"github.com/lightningnetwork/lnd/chainntnfs"
|
|
"github.com/lightningnetwork/lnd/channeldb"
|
|
"github.com/lightningnetwork/lnd/contractcourt"
|
|
"github.com/lightningnetwork/lnd/htlcswitch"
|
|
"github.com/lightningnetwork/lnd/input"
|
|
"github.com/lightningnetwork/lnd/keychain"
|
|
"github.com/lightningnetwork/lnd/lnwallet"
|
|
"github.com/lightningnetwork/lnd/lnwire"
|
|
"github.com/lightningnetwork/lnd/netann"
|
|
"github.com/lightningnetwork/lnd/shachain"
|
|
"github.com/lightningnetwork/lnd/ticker"
|
|
)
|
|
|
|
var (
|
|
alicesPrivKey = []byte{
|
|
0x2b, 0xd8, 0x06, 0xc9, 0x7f, 0x0e, 0x00, 0xaf,
|
|
0x1a, 0x1f, 0xc3, 0x32, 0x8f, 0xa7, 0x63, 0xa9,
|
|
0x26, 0x97, 0x23, 0xc8, 0xdb, 0x8f, 0xac, 0x4f,
|
|
0x93, 0xaf, 0x71, 0xdb, 0x18, 0x6d, 0x6e, 0x90,
|
|
}
|
|
|
|
bobsPrivKey = []byte{
|
|
0x81, 0xb6, 0x37, 0xd8, 0xfc, 0xd2, 0xc6, 0xda,
|
|
0x63, 0x59, 0xe6, 0x96, 0x31, 0x13, 0xa1, 0x17,
|
|
0xd, 0xe7, 0x95, 0xe4, 0xb7, 0x25, 0xb8, 0x4d,
|
|
0x1e, 0xb, 0x4c, 0xfd, 0x9e, 0xc5, 0x8c, 0xe9,
|
|
}
|
|
|
|
// Use a hard-coded HD seed.
|
|
testHdSeed = [32]byte{
|
|
0xb7, 0x94, 0x38, 0x5f, 0x2d, 0x1e, 0xf7, 0xab,
|
|
0x4d, 0x92, 0x73, 0xd1, 0x90, 0x63, 0x81, 0xb4,
|
|
0x4f, 0x2f, 0x6f, 0x25, 0x88, 0xa3, 0xef, 0xb9,
|
|
0x6a, 0x49, 0x18, 0x83, 0x31, 0x98, 0x47, 0x53,
|
|
}
|
|
|
|
// Just use some arbitrary bytes as delivery script.
|
|
dummyDeliveryScript = alicesPrivKey[:]
|
|
|
|
// testTx is used as the default funding txn for single-funder channels.
|
|
testTx = &wire.MsgTx{
|
|
Version: 1,
|
|
TxIn: []*wire.TxIn{
|
|
{
|
|
PreviousOutPoint: wire.OutPoint{
|
|
Hash: chainhash.Hash{},
|
|
Index: 0xffffffff,
|
|
},
|
|
SignatureScript: []byte{0x04, 0x31, 0xdc, 0x00, 0x1b, 0x01, 0x62},
|
|
Sequence: 0xffffffff,
|
|
},
|
|
},
|
|
TxOut: []*wire.TxOut{
|
|
{
|
|
Value: 5000000000,
|
|
PkScript: []byte{
|
|
0x41, // OP_DATA_65
|
|
0x04, 0xd6, 0x4b, 0xdf, 0xd0, 0x9e, 0xb1, 0xc5,
|
|
0xfe, 0x29, 0x5a, 0xbd, 0xeb, 0x1d, 0xca, 0x42,
|
|
0x81, 0xbe, 0x98, 0x8e, 0x2d, 0xa0, 0xb6, 0xc1,
|
|
0xc6, 0xa5, 0x9d, 0xc2, 0x26, 0xc2, 0x86, 0x24,
|
|
0xe1, 0x81, 0x75, 0xe8, 0x51, 0xc9, 0x6b, 0x97,
|
|
0x3d, 0x81, 0xb0, 0x1c, 0xc3, 0x1f, 0x04, 0x78,
|
|
0x34, 0xbc, 0x06, 0xd6, 0xd6, 0xed, 0xf6, 0x20,
|
|
0xd1, 0x84, 0x24, 0x1a, 0x6a, 0xed, 0x8b, 0x63,
|
|
0xa6, // 65-byte signature
|
|
0xac, // OP_CHECKSIG
|
|
},
|
|
},
|
|
},
|
|
LockTime: 5,
|
|
}
|
|
)
|
|
|
|
// createTestPeer creates a channel between two nodes, and returns a peer for
|
|
// one of the nodes, together with the channel seen from both nodes.
|
|
func createTestPeer(notifier chainntnfs.ChainNotifier,
|
|
publTx chan *wire.MsgTx) (*peer, *lnwallet.LightningChannel,
|
|
*lnwallet.LightningChannel, func(), error) {
|
|
|
|
aliceKeyPriv, aliceKeyPub := btcec.PrivKeyFromBytes(btcec.S256(),
|
|
alicesPrivKey)
|
|
bobKeyPriv, bobKeyPub := btcec.PrivKeyFromBytes(btcec.S256(),
|
|
bobsPrivKey)
|
|
|
|
channelCapacity := btcutil.Amount(10 * 1e8)
|
|
channelBal := channelCapacity / 2
|
|
aliceDustLimit := btcutil.Amount(200)
|
|
bobDustLimit := btcutil.Amount(1300)
|
|
csvTimeoutAlice := uint32(5)
|
|
csvTimeoutBob := uint32(4)
|
|
|
|
prevOut := &wire.OutPoint{
|
|
Hash: chainhash.Hash(testHdSeed),
|
|
Index: 0,
|
|
}
|
|
fundingTxIn := wire.NewTxIn(prevOut, nil, nil)
|
|
|
|
aliceCfg := channeldb.ChannelConfig{
|
|
ChannelConstraints: channeldb.ChannelConstraints{
|
|
DustLimit: aliceDustLimit,
|
|
MaxPendingAmount: lnwire.MilliSatoshi(rand.Int63()),
|
|
ChanReserve: btcutil.Amount(rand.Int63()),
|
|
MinHTLC: lnwire.MilliSatoshi(rand.Int63()),
|
|
MaxAcceptedHtlcs: uint16(rand.Int31()),
|
|
CsvDelay: uint16(csvTimeoutAlice),
|
|
},
|
|
MultiSigKey: keychain.KeyDescriptor{
|
|
PubKey: aliceKeyPub,
|
|
},
|
|
RevocationBasePoint: keychain.KeyDescriptor{
|
|
PubKey: aliceKeyPub,
|
|
},
|
|
PaymentBasePoint: keychain.KeyDescriptor{
|
|
PubKey: aliceKeyPub,
|
|
},
|
|
DelayBasePoint: keychain.KeyDescriptor{
|
|
PubKey: aliceKeyPub,
|
|
},
|
|
HtlcBasePoint: keychain.KeyDescriptor{
|
|
PubKey: aliceKeyPub,
|
|
},
|
|
}
|
|
bobCfg := channeldb.ChannelConfig{
|
|
ChannelConstraints: channeldb.ChannelConstraints{
|
|
DustLimit: bobDustLimit,
|
|
MaxPendingAmount: lnwire.MilliSatoshi(rand.Int63()),
|
|
ChanReserve: btcutil.Amount(rand.Int63()),
|
|
MinHTLC: lnwire.MilliSatoshi(rand.Int63()),
|
|
MaxAcceptedHtlcs: uint16(rand.Int31()),
|
|
CsvDelay: uint16(csvTimeoutBob),
|
|
},
|
|
MultiSigKey: keychain.KeyDescriptor{
|
|
PubKey: bobKeyPub,
|
|
},
|
|
RevocationBasePoint: keychain.KeyDescriptor{
|
|
PubKey: bobKeyPub,
|
|
},
|
|
PaymentBasePoint: keychain.KeyDescriptor{
|
|
PubKey: bobKeyPub,
|
|
},
|
|
DelayBasePoint: keychain.KeyDescriptor{
|
|
PubKey: bobKeyPub,
|
|
},
|
|
HtlcBasePoint: keychain.KeyDescriptor{
|
|
PubKey: bobKeyPub,
|
|
},
|
|
}
|
|
|
|
bobRoot, err := chainhash.NewHash(bobKeyPriv.Serialize())
|
|
if err != nil {
|
|
return nil, nil, nil, nil, err
|
|
}
|
|
bobPreimageProducer := shachain.NewRevocationProducer(*bobRoot)
|
|
bobFirstRevoke, err := bobPreimageProducer.AtIndex(0)
|
|
if err != nil {
|
|
return nil, nil, nil, nil, err
|
|
}
|
|
bobCommitPoint := input.ComputeCommitmentPoint(bobFirstRevoke[:])
|
|
|
|
aliceRoot, err := chainhash.NewHash(aliceKeyPriv.Serialize())
|
|
if err != nil {
|
|
return nil, nil, nil, nil, err
|
|
}
|
|
alicePreimageProducer := shachain.NewRevocationProducer(*aliceRoot)
|
|
aliceFirstRevoke, err := alicePreimageProducer.AtIndex(0)
|
|
if err != nil {
|
|
return nil, nil, nil, nil, err
|
|
}
|
|
aliceCommitPoint := input.ComputeCommitmentPoint(aliceFirstRevoke[:])
|
|
|
|
aliceCommitTx, bobCommitTx, err := lnwallet.CreateCommitmentTxns(channelBal,
|
|
channelBal, &aliceCfg, &bobCfg, aliceCommitPoint, bobCommitPoint,
|
|
*fundingTxIn)
|
|
if err != nil {
|
|
return nil, nil, nil, nil, err
|
|
}
|
|
|
|
alicePath, err := ioutil.TempDir("", "alicedb")
|
|
dbAlice, err := channeldb.Open(alicePath)
|
|
if err != nil {
|
|
return nil, nil, nil, nil, err
|
|
}
|
|
|
|
bobPath, err := ioutil.TempDir("", "bobdb")
|
|
dbBob, err := channeldb.Open(bobPath)
|
|
if err != nil {
|
|
return nil, nil, nil, nil, err
|
|
}
|
|
|
|
estimator := lnwallet.NewStaticFeeEstimator(12500, 0)
|
|
feePerKw, err := estimator.EstimateFeePerKW(1)
|
|
if err != nil {
|
|
return nil, nil, nil, nil, err
|
|
}
|
|
|
|
// TODO(roasbeef): need to factor in commit fee?
|
|
aliceCommit := channeldb.ChannelCommitment{
|
|
CommitHeight: 0,
|
|
LocalBalance: lnwire.NewMSatFromSatoshis(channelBal),
|
|
RemoteBalance: lnwire.NewMSatFromSatoshis(channelBal),
|
|
FeePerKw: btcutil.Amount(feePerKw),
|
|
CommitFee: feePerKw.FeeForWeight(input.CommitWeight),
|
|
CommitTx: aliceCommitTx,
|
|
CommitSig: bytes.Repeat([]byte{1}, 71),
|
|
}
|
|
bobCommit := channeldb.ChannelCommitment{
|
|
CommitHeight: 0,
|
|
LocalBalance: lnwire.NewMSatFromSatoshis(channelBal),
|
|
RemoteBalance: lnwire.NewMSatFromSatoshis(channelBal),
|
|
FeePerKw: btcutil.Amount(feePerKw),
|
|
CommitFee: feePerKw.FeeForWeight(input.CommitWeight),
|
|
CommitTx: bobCommitTx,
|
|
CommitSig: bytes.Repeat([]byte{1}, 71),
|
|
}
|
|
|
|
var chanIDBytes [8]byte
|
|
if _, err := io.ReadFull(crand.Reader, chanIDBytes[:]); err != nil {
|
|
return nil, nil, nil, nil, err
|
|
}
|
|
|
|
shortChanID := lnwire.NewShortChanIDFromInt(
|
|
binary.BigEndian.Uint64(chanIDBytes[:]),
|
|
)
|
|
|
|
aliceChannelState := &channeldb.OpenChannel{
|
|
LocalChanCfg: aliceCfg,
|
|
RemoteChanCfg: bobCfg,
|
|
IdentityPub: aliceKeyPub,
|
|
FundingOutpoint: *prevOut,
|
|
ShortChannelID: shortChanID,
|
|
ChanType: channeldb.SingleFunder,
|
|
IsInitiator: true,
|
|
Capacity: channelCapacity,
|
|
RemoteCurrentRevocation: bobCommitPoint,
|
|
RevocationProducer: alicePreimageProducer,
|
|
RevocationStore: shachain.NewRevocationStore(),
|
|
LocalCommitment: aliceCommit,
|
|
RemoteCommitment: aliceCommit,
|
|
Db: dbAlice,
|
|
Packager: channeldb.NewChannelPackager(shortChanID),
|
|
FundingTxn: testTx,
|
|
}
|
|
bobChannelState := &channeldb.OpenChannel{
|
|
LocalChanCfg: bobCfg,
|
|
RemoteChanCfg: aliceCfg,
|
|
IdentityPub: bobKeyPub,
|
|
FundingOutpoint: *prevOut,
|
|
ChanType: channeldb.SingleFunder,
|
|
IsInitiator: false,
|
|
Capacity: channelCapacity,
|
|
RemoteCurrentRevocation: aliceCommitPoint,
|
|
RevocationProducer: bobPreimageProducer,
|
|
RevocationStore: shachain.NewRevocationStore(),
|
|
LocalCommitment: bobCommit,
|
|
RemoteCommitment: bobCommit,
|
|
Db: dbBob,
|
|
Packager: channeldb.NewChannelPackager(shortChanID),
|
|
}
|
|
|
|
aliceAddr := &net.TCPAddr{
|
|
IP: net.ParseIP("127.0.0.1"),
|
|
Port: 18555,
|
|
}
|
|
|
|
if err := aliceChannelState.SyncPending(aliceAddr, 0); err != nil {
|
|
return nil, nil, nil, nil, err
|
|
}
|
|
|
|
bobAddr := &net.TCPAddr{
|
|
IP: net.ParseIP("127.0.0.1"),
|
|
Port: 18556,
|
|
}
|
|
|
|
if err := bobChannelState.SyncPending(bobAddr, 0); err != nil {
|
|
return nil, nil, nil, nil, err
|
|
}
|
|
|
|
cleanUpFunc := func() {
|
|
os.RemoveAll(bobPath)
|
|
os.RemoveAll(alicePath)
|
|
}
|
|
|
|
aliceSigner := &mockSigner{aliceKeyPriv}
|
|
bobSigner := &mockSigner{bobKeyPriv}
|
|
|
|
alicePool := lnwallet.NewSigPool(1, aliceSigner)
|
|
channelAlice, err := lnwallet.NewLightningChannel(
|
|
aliceSigner, aliceChannelState, alicePool,
|
|
)
|
|
if err != nil {
|
|
return nil, nil, nil, nil, err
|
|
}
|
|
alicePool.Start()
|
|
|
|
bobPool := lnwallet.NewSigPool(1, bobSigner)
|
|
channelBob, err := lnwallet.NewLightningChannel(
|
|
bobSigner, bobChannelState, bobPool,
|
|
)
|
|
if err != nil {
|
|
return nil, nil, nil, nil, err
|
|
}
|
|
bobPool.Start()
|
|
|
|
chainIO := &mockChainIO{
|
|
bestHeight: fundingBroadcastHeight,
|
|
}
|
|
wallet := &lnwallet.LightningWallet{
|
|
WalletController: &mockWalletController{
|
|
rootKey: aliceKeyPriv,
|
|
publishedTransactions: publTx,
|
|
},
|
|
}
|
|
cc := &chainControl{
|
|
feeEstimator: estimator,
|
|
chainIO: chainIO,
|
|
chainNotifier: notifier,
|
|
wallet: wallet,
|
|
}
|
|
|
|
breachArbiter := &breachArbiter{}
|
|
|
|
chainArb := contractcourt.NewChainArbitrator(
|
|
contractcourt.ChainArbitratorConfig{
|
|
Notifier: notifier,
|
|
ChainIO: chainIO,
|
|
}, dbAlice,
|
|
)
|
|
chainArb.WatchNewChannel(aliceChannelState)
|
|
|
|
s := &server{
|
|
chanDB: dbAlice,
|
|
cc: cc,
|
|
breachArbiter: breachArbiter,
|
|
chainArb: chainArb,
|
|
}
|
|
|
|
_, currentHeight, err := s.cc.chainIO.GetBestBlock()
|
|
if err != nil {
|
|
return nil, nil, nil, nil, err
|
|
}
|
|
|
|
htlcSwitch, err := htlcswitch.New(htlcswitch.Config{
|
|
DB: dbAlice,
|
|
SwitchPackager: channeldb.NewSwitchPackager(),
|
|
Notifier: notifier,
|
|
FwdEventTicker: ticker.New(
|
|
htlcswitch.DefaultFwdEventInterval),
|
|
LogEventTicker: ticker.New(
|
|
htlcswitch.DefaultLogInterval),
|
|
AckEventTicker: ticker.New(
|
|
htlcswitch.DefaultAckInterval),
|
|
}, uint32(currentHeight))
|
|
if err != nil {
|
|
return nil, nil, nil, nil, err
|
|
}
|
|
if err = htlcSwitch.Start(); err != nil {
|
|
return nil, nil, nil, nil, err
|
|
}
|
|
s.htlcSwitch = htlcSwitch
|
|
|
|
nodeSignerAlice := netann.NewNodeSigner(aliceKeyPriv)
|
|
|
|
const chanActiveTimeout = time.Minute
|
|
|
|
chanStatusMgr, err := netann.NewChanStatusManager(&netann.ChanStatusConfig{
|
|
ChanStatusSampleInterval: 30 * time.Second,
|
|
ChanEnableTimeout: chanActiveTimeout,
|
|
ChanDisableTimeout: 2 * time.Minute,
|
|
DB: dbAlice,
|
|
Graph: dbAlice.ChannelGraph(),
|
|
MessageSigner: nodeSignerAlice,
|
|
OurPubKey: aliceKeyPub,
|
|
IsChannelActive: s.htlcSwitch.HasActiveLink,
|
|
ApplyChannelUpdate: func(*lnwire.ChannelUpdate) error { return nil },
|
|
})
|
|
if err != nil {
|
|
return nil, nil, nil, nil, err
|
|
}
|
|
if err = chanStatusMgr.Start(); err != nil {
|
|
return nil, nil, nil, nil, err
|
|
}
|
|
s.chanStatusMgr = chanStatusMgr
|
|
|
|
alicePeer := &peer{
|
|
addr: &lnwire.NetAddress{
|
|
IdentityKey: aliceKeyPub,
|
|
Address: aliceAddr,
|
|
},
|
|
|
|
server: s,
|
|
sendQueue: make(chan outgoingMsg, 1),
|
|
outgoingQueue: make(chan outgoingMsg, outgoingQueueLen),
|
|
|
|
activeChannels: make(map[lnwire.ChannelID]*lnwallet.LightningChannel),
|
|
newChannels: make(chan *newChannelMsg, 1),
|
|
|
|
activeChanCloses: make(map[lnwire.ChannelID]*channelCloser),
|
|
localCloseChanReqs: make(chan *htlcswitch.ChanClose),
|
|
chanCloseMsgs: make(chan *closeMsg),
|
|
|
|
chanActiveTimeout: chanActiveTimeout,
|
|
|
|
queueQuit: make(chan struct{}),
|
|
quit: make(chan struct{}),
|
|
}
|
|
|
|
chanID := lnwire.NewChanIDFromOutPoint(channelAlice.ChannelPoint())
|
|
alicePeer.activeChannels[chanID] = channelAlice
|
|
|
|
alicePeer.wg.Add(1)
|
|
go alicePeer.channelManager()
|
|
|
|
return alicePeer, channelAlice, channelBob, cleanUpFunc, nil
|
|
}
|