mirror of
https://github.com/lightningnetwork/lnd.git
synced 2024-11-19 18:10:34 +01:00
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
|
|
}
|