957 lines
26 KiB
Go
957 lines
26 KiB
Go
package htlcswitch
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import (
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"bytes"
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"crypto/rand"
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"crypto/sha256"
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"fmt"
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"testing"
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"time"
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"io/ioutil"
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"os"
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"io"
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"math/big"
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"net"
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"github.com/btcsuite/fastsha256"
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"github.com/go-errors/errors"
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"github.com/lightningnetwork/lnd/chainntnfs"
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"github.com/lightningnetwork/lnd/channeldb"
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"github.com/lightningnetwork/lnd/contractcourt"
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"github.com/lightningnetwork/lnd/lnwallet"
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"github.com/lightningnetwork/lnd/lnwire"
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"github.com/lightningnetwork/lnd/shachain"
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"github.com/roasbeef/btcd/btcec"
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"github.com/roasbeef/btcd/chaincfg/chainhash"
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"github.com/roasbeef/btcd/wire"
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"github.com/roasbeef/btcutil"
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)
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var (
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alicePrivKey = []byte("alice priv key")
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bobPrivKey = []byte("bob priv key")
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carolPrivKey = []byte("carol priv key")
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testPrivKey = []byte{
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0x81, 0xb6, 0x37, 0xd8, 0xfc, 0xd2, 0xc6, 0xda,
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0x63, 0x59, 0xe6, 0x96, 0x31, 0x13, 0xa1, 0x17,
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0xd, 0xe7, 0x95, 0xe4, 0xb7, 0x25, 0xb8, 0x4d,
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0x1e, 0xb, 0x4c, 0xfd, 0x9e, 0xc5, 0x8c, 0xe9,
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}
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_, testPubKey = btcec.PrivKeyFromBytes(btcec.S256(), testPrivKey)
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testSig = &btcec.Signature{
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R: new(big.Int),
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S: new(big.Int),
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}
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_, _ = testSig.R.SetString("6372440660162918006277497454296753625158993"+
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"5445068131219452686511677818569431", 10)
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_, _ = testSig.S.SetString("1880105606924982582529128710493133386286603"+
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"3135609736119018462340006816851118", 10)
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)
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// mockGetChanUpdateMessage helper function which returns topology update
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// of the channel
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func mockGetChanUpdateMessage() (*lnwire.ChannelUpdate, error) {
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return &lnwire.ChannelUpdate{
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Signature: testSig,
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}, nil
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}
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// generateRandomBytes returns securely generated random bytes.
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// It will return an error if the system's secure random
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// number generator fails to function correctly, in which
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// case the caller should not continue.
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func generateRandomBytes(n int) ([]byte, error) {
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b := make([]byte, n)
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// TODO(roasbeef): should use counter in tests (atomic) rather than
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// this
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_, err := rand.Read(b[:])
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// Note that Err == nil only if we read len(b) bytes.
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if err != nil {
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return nil, err
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}
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return b, nil
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}
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// createTestChannel creates the channel and returns our and remote channels
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// representations.
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//
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// TODO(roasbeef): need to factor out, similar func re-used in many parts of codebase
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func createTestChannel(alicePrivKey, bobPrivKey []byte,
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aliceAmount, bobAmount btcutil.Amount,
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chanID lnwire.ShortChannelID) (*lnwallet.LightningChannel, *lnwallet.LightningChannel, func(),
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func() (*lnwallet.LightningChannel, *lnwallet.LightningChannel,
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error), error) {
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aliceKeyPriv, aliceKeyPub := btcec.PrivKeyFromBytes(btcec.S256(), alicePrivKey)
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bobKeyPriv, bobKeyPub := btcec.PrivKeyFromBytes(btcec.S256(), bobPrivKey)
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channelCapacity := aliceAmount + bobAmount
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aliceDustLimit := btcutil.Amount(200)
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bobDustLimit := btcutil.Amount(800)
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csvTimeoutAlice := uint32(5)
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csvTimeoutBob := uint32(4)
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var hash [sha256.Size]byte
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randomSeed, err := generateRandomBytes(sha256.Size)
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if err != nil {
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return nil, nil, nil, nil, err
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}
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copy(hash[:], randomSeed)
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prevOut := &wire.OutPoint{
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Hash: chainhash.Hash(hash),
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Index: 0,
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}
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fundingTxIn := wire.NewTxIn(prevOut, nil, nil)
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aliceCfg := channeldb.ChannelConfig{
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ChannelConstraints: channeldb.ChannelConstraints{
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DustLimit: aliceDustLimit,
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},
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CsvDelay: uint16(csvTimeoutAlice),
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MultiSigKey: aliceKeyPub,
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RevocationBasePoint: aliceKeyPub,
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PaymentBasePoint: aliceKeyPub,
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DelayBasePoint: aliceKeyPub,
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HtlcBasePoint: aliceKeyPub,
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}
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bobCfg := channeldb.ChannelConfig{
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ChannelConstraints: channeldb.ChannelConstraints{
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DustLimit: bobDustLimit,
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},
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CsvDelay: uint16(csvTimeoutBob),
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MultiSigKey: bobKeyPub,
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RevocationBasePoint: bobKeyPub,
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PaymentBasePoint: bobKeyPub,
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DelayBasePoint: bobKeyPub,
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HtlcBasePoint: bobKeyPub,
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}
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bobRoot := lnwallet.DeriveRevocationRoot(bobKeyPriv, hash, aliceKeyPub)
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bobPreimageProducer := shachain.NewRevocationProducer(bobRoot)
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bobFirstRevoke, err := bobPreimageProducer.AtIndex(0)
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if err != nil {
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return nil, nil, nil, nil, err
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}
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bobCommitPoint := lnwallet.ComputeCommitmentPoint(bobFirstRevoke[:])
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aliceRoot := lnwallet.DeriveRevocationRoot(aliceKeyPriv, hash, bobKeyPub)
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alicePreimageProducer := shachain.NewRevocationProducer(aliceRoot)
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aliceFirstRevoke, err := alicePreimageProducer.AtIndex(0)
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if err != nil {
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return nil, nil, nil, nil, err
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}
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aliceCommitPoint := lnwallet.ComputeCommitmentPoint(aliceFirstRevoke[:])
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aliceCommitTx, bobCommitTx, err := lnwallet.CreateCommitmentTxns(aliceAmount,
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bobAmount, &aliceCfg, &bobCfg, aliceCommitPoint, bobCommitPoint,
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*fundingTxIn)
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if err != nil {
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return nil, nil, nil, nil, err
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}
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alicePath, err := ioutil.TempDir("", "alicedb")
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dbAlice, err := channeldb.Open(alicePath)
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if err != nil {
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return nil, nil, nil, nil, err
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}
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bobPath, err := ioutil.TempDir("", "bobdb")
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dbBob, err := channeldb.Open(bobPath)
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if err != nil {
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return nil, nil, nil, nil, err
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}
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estimator := &lnwallet.StaticFeeEstimator{
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FeeRate: 24,
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}
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feePerWeight, err := estimator.EstimateFeePerWeight(1)
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if err != nil {
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return nil, nil, nil, nil, err
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}
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feePerKw := btcutil.Amount(feePerWeight * 1000)
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commitFee := (feePerKw * btcutil.Amount(724)) / 1000
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const broadcastHeight = 1
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bobAddr := &net.TCPAddr{
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IP: net.ParseIP("127.0.0.1"),
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Port: 18555,
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}
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aliceAddr := &net.TCPAddr{
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IP: net.ParseIP("127.0.0.1"),
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Port: 18556,
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}
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aliceCommit := channeldb.ChannelCommitment{
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CommitHeight: 0,
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LocalBalance: lnwire.NewMSatFromSatoshis(aliceAmount - commitFee),
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RemoteBalance: lnwire.NewMSatFromSatoshis(bobAmount),
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CommitFee: commitFee,
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FeePerKw: feePerKw,
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CommitTx: aliceCommitTx,
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CommitSig: bytes.Repeat([]byte{1}, 71),
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}
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bobCommit := channeldb.ChannelCommitment{
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CommitHeight: 0,
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LocalBalance: lnwire.NewMSatFromSatoshis(bobAmount),
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RemoteBalance: lnwire.NewMSatFromSatoshis(aliceAmount - commitFee),
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CommitFee: commitFee,
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FeePerKw: feePerKw,
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CommitTx: bobCommitTx,
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CommitSig: bytes.Repeat([]byte{1}, 71),
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}
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aliceChannelState := &channeldb.OpenChannel{
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LocalChanCfg: aliceCfg,
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RemoteChanCfg: bobCfg,
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IdentityPub: aliceKeyPub,
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FundingOutpoint: *prevOut,
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ChanType: channeldb.SingleFunder,
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IsInitiator: true,
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Capacity: channelCapacity,
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RemoteCurrentRevocation: bobCommitPoint,
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RevocationProducer: alicePreimageProducer,
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RevocationStore: shachain.NewRevocationStore(),
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LocalCommitment: aliceCommit,
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RemoteCommitment: aliceCommit,
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ShortChanID: chanID,
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Db: dbAlice,
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}
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bobChannelState := &channeldb.OpenChannel{
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LocalChanCfg: bobCfg,
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RemoteChanCfg: aliceCfg,
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IdentityPub: bobKeyPub,
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FundingOutpoint: *prevOut,
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ChanType: channeldb.SingleFunder,
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IsInitiator: false,
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Capacity: channelCapacity,
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RemoteCurrentRevocation: aliceCommitPoint,
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RevocationProducer: bobPreimageProducer,
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RevocationStore: shachain.NewRevocationStore(),
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LocalCommitment: bobCommit,
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RemoteCommitment: bobCommit,
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ShortChanID: chanID,
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Db: dbBob,
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}
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if err := aliceChannelState.SyncPending(bobAddr, broadcastHeight); err != nil {
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return nil, nil, nil, nil, err
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}
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if err := bobChannelState.SyncPending(aliceAddr, broadcastHeight); err != nil {
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return nil, nil, nil, nil, err
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}
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cleanUpFunc := func() {
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os.RemoveAll(bobPath)
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os.RemoveAll(alicePath)
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}
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aliceSigner := &mockSigner{aliceKeyPriv}
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bobSigner := &mockSigner{bobKeyPriv}
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pCache := &mockPreimageCache{
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// hash -> preimage
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preimageMap: make(map[[32]byte][]byte),
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}
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channelAlice, err := lnwallet.NewLightningChannel(
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aliceSigner, pCache, aliceChannelState,
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)
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if err != nil {
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return nil, nil, nil, nil, err
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}
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channelBob, err := lnwallet.NewLightningChannel(
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bobSigner, pCache, bobChannelState,
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)
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if err != nil {
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return nil, nil, nil, nil, err
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}
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// Now that the channel are open, simulate the start of a session by
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// having Alice and Bob extend their revocation windows to each other.
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aliceNextRevoke, err := channelAlice.NextRevocationKey()
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if err != nil {
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return nil, nil, nil, nil, err
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}
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if err := channelBob.InitNextRevocation(aliceNextRevoke); err != nil {
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return nil, nil, nil, nil, err
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}
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bobNextRevoke, err := channelBob.NextRevocationKey()
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if err != nil {
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return nil, nil, nil, nil, err
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}
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if err := channelAlice.InitNextRevocation(bobNextRevoke); err != nil {
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return nil, nil, nil, nil, err
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}
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restore := func() (*lnwallet.LightningChannel, *lnwallet.LightningChannel,
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error) {
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aliceStoredChannels, err := dbAlice.FetchOpenChannels(aliceKeyPub)
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if err != nil {
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return nil, nil, errors.Errorf("unable to fetch alice channel: "+
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"%v", err)
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}
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var aliceStoredChannel *channeldb.OpenChannel
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for _, channel := range aliceStoredChannels {
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if channel.FundingOutpoint.String() == prevOut.String() {
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aliceStoredChannel = channel
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break
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}
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}
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if aliceStoredChannel == nil {
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return nil, nil, errors.New("unable to find stored alice channel")
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}
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newAliceChannel, err := lnwallet.NewLightningChannel(aliceSigner,
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nil, aliceStoredChannel)
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if err != nil {
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return nil, nil, errors.Errorf("unable to create new channel: %v",
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err)
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}
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bobStoredChannels, err := dbBob.FetchOpenChannels(bobKeyPub)
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if err != nil {
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return nil, nil, errors.Errorf("unable to fetch bob channel: "+
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"%v", err)
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}
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var bobStoredChannel *channeldb.OpenChannel
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for _, channel := range bobStoredChannels {
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if channel.FundingOutpoint.String() == prevOut.String() {
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bobStoredChannel = channel
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break
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}
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}
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if bobStoredChannel == nil {
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return nil, nil, errors.New("unable to find stored bob channel")
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}
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newBobChannel, err := lnwallet.NewLightningChannel(bobSigner,
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nil, bobStoredChannel)
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if err != nil {
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return nil, nil, errors.Errorf("unable to create new channel: %v",
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err)
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}
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return newAliceChannel, newBobChannel, nil
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}
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return channelAlice, channelBob, cleanUpFunc, restore, nil
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}
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// getChanID retrieves the channel point from nwire message.
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func getChanID(msg lnwire.Message) (lnwire.ChannelID, error) {
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var chanID lnwire.ChannelID
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switch msg := msg.(type) {
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case *lnwire.UpdateAddHTLC:
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chanID = msg.ChanID
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case *lnwire.UpdateFulfillHTLC:
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chanID = msg.ChanID
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case *lnwire.UpdateFailHTLC:
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chanID = msg.ChanID
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case *lnwire.RevokeAndAck:
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chanID = msg.ChanID
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case *lnwire.CommitSig:
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chanID = msg.ChanID
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case *lnwire.ChannelReestablish:
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chanID = msg.ChanID
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case *lnwire.FundingLocked:
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chanID = msg.ChanID
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case *lnwire.UpdateFee:
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chanID = msg.ChanID
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default:
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return chanID, fmt.Errorf("unknown type: %T", msg)
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}
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return chanID, nil
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}
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// generatePayment generates the htlc add request by given path blob and
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// invoice which should be added by destination peer.
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func generatePayment(invoiceAmt, htlcAmt lnwire.MilliSatoshi, timelock uint32,
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blob [lnwire.OnionPacketSize]byte) (*channeldb.Invoice, *lnwire.UpdateAddHTLC, error) {
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var preimage [sha256.Size]byte
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r, err := generateRandomBytes(sha256.Size)
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if err != nil {
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return nil, nil, err
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}
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copy(preimage[:], r)
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rhash := fastsha256.Sum256(preimage[:])
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invoice := &channeldb.Invoice{
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CreationDate: time.Now(),
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Terms: channeldb.ContractTerm{
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Value: invoiceAmt,
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PaymentPreimage: preimage,
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},
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}
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htlc := &lnwire.UpdateAddHTLC{
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PaymentHash: rhash,
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Amount: htlcAmt,
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Expiry: timelock,
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OnionBlob: blob,
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}
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return invoice, htlc, nil
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}
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// generateRoute generates the path blob by given array of peers.
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func generateRoute(hops ...ForwardingInfo) ([lnwire.OnionPacketSize]byte, error) {
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var blob [lnwire.OnionPacketSize]byte
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if len(hops) == 0 {
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return blob, errors.New("empty path")
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}
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iterator := newMockHopIterator(hops...)
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w := bytes.NewBuffer(blob[0:0])
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if err := iterator.EncodeNextHop(w); err != nil {
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return blob, err
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}
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return blob, nil
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}
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// threeHopNetwork is used for managing the created cluster of 3 hops.
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type threeHopNetwork struct {
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aliceServer *mockServer
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aliceChannelLink *channelLink
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aliceBlockEpoch chan *chainntnfs.BlockEpoch
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aliceTicker *time.Ticker
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firstBobChannelLink *channelLink
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bobFirstBlockEpoch chan *chainntnfs.BlockEpoch
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firstBobTicker *time.Ticker
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bobServer *mockServer
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secondBobChannelLink *channelLink
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bobSecondBlockEpoch chan *chainntnfs.BlockEpoch
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secondBobTicker *time.Ticker
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carolChannelLink *channelLink
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carolServer *mockServer
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carolBlockEpoch chan *chainntnfs.BlockEpoch
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carolTicker *time.Ticker
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feeEstimator *mockFeeEstimator
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globalPolicy ForwardingPolicy
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}
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// generateHops creates the per hop payload, the total amount to be sent, and
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// also the time lock value needed to route a HTLC with the target amount over
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// the specified path.
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func generateHops(payAmt lnwire.MilliSatoshi, startingHeight uint32,
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path ...*channelLink) (lnwire.MilliSatoshi, uint32, []ForwardingInfo) {
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lastHop := path[len(path)-1]
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totalTimelock := startingHeight
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runningAmt := payAmt
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hops := make([]ForwardingInfo, len(path))
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for i := len(path) - 1; i >= 0; i-- {
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// If this is the last hop, then the next hop is the special
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// "exit node". Otherwise, we look to the "prior" hop.
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nextHop := exitHop
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if i != len(path)-1 {
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nextHop = path[i+1].channel.ShortChanID()
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}
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// If this is the last, hop, then the time lock will be their
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// specified delta policy plus our starting height.
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totalTimelock += lastHop.cfg.FwrdingPolicy.TimeLockDelta
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timeLock := totalTimelock
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// Otherwise, the outgoing time lock should be the incoming
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// timelock minus their specified delta.
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if i != len(path)-1 {
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delta := path[i].cfg.FwrdingPolicy.TimeLockDelta
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timeLock = totalTimelock - delta
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}
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// Finally, we'll need to calculate the amount to forward. For
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// the last hop, it's just the payment amount.
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amount := payAmt
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if i != len(path)-1 {
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prevHop := hops[i+1]
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prevAmount := prevHop.AmountToForward
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fee := ExpectedFee(path[i].cfg.FwrdingPolicy, prevAmount)
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runningAmt += fee
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// Otherwise, for a node to forward an HTLC, then
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// following inequality most hold true:
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// * amt_in - fee >= amt_to_forward
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amount = runningAmt - fee
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}
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hops[i] = ForwardingInfo{
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Network: BitcoinHop,
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NextHop: nextHop,
|
|
AmountToForward: amount,
|
|
OutgoingCTLV: timeLock,
|
|
}
|
|
}
|
|
|
|
return runningAmt, totalTimelock, hops
|
|
}
|
|
|
|
type paymentResponse struct {
|
|
rhash chainhash.Hash
|
|
err chan error
|
|
}
|
|
|
|
func (r *paymentResponse) Wait(d time.Duration) (chainhash.Hash, error) {
|
|
select {
|
|
case err := <-r.err:
|
|
close(r.err)
|
|
return r.rhash, err
|
|
case <-time.After(d):
|
|
return r.rhash, errors.New("htlc was no settled in time")
|
|
}
|
|
}
|
|
|
|
// makePayment takes the destination node and amount as input, sends the
|
|
// payment and returns the error channel to wait for error to be received and
|
|
// invoice in order to check its status after the payment finished.
|
|
//
|
|
// With this function you can send payments:
|
|
// * from Alice to Bob
|
|
// * from Alice to Carol through the Bob
|
|
// * from Alice to some another peer through the Bob
|
|
func (n *threeHopNetwork) makePayment(sendingPeer, receivingPeer Peer,
|
|
firstHopPub [33]byte, hops []ForwardingInfo,
|
|
invoiceAmt, htlcAmt lnwire.MilliSatoshi,
|
|
timelock uint32) *paymentResponse {
|
|
|
|
paymentErr := make(chan error, 1)
|
|
|
|
var rhash chainhash.Hash
|
|
|
|
sender := sendingPeer.(*mockServer)
|
|
receiver := receivingPeer.(*mockServer)
|
|
|
|
// Generate route convert it to blob, and return next destination for
|
|
// htlc add request.
|
|
blob, err := generateRoute(hops...)
|
|
if err != nil {
|
|
paymentErr <- err
|
|
return &paymentResponse{
|
|
rhash: rhash,
|
|
err: paymentErr,
|
|
}
|
|
}
|
|
|
|
// Generate payment: invoice and htlc.
|
|
invoice, htlc, err := generatePayment(invoiceAmt, htlcAmt, timelock, blob)
|
|
if err != nil {
|
|
paymentErr <- err
|
|
return &paymentResponse{
|
|
rhash: rhash,
|
|
err: paymentErr,
|
|
}
|
|
}
|
|
rhash = fastsha256.Sum256(invoice.Terms.PaymentPreimage[:])
|
|
|
|
// Check who is last in the route and add invoice to server registry.
|
|
if err := receiver.registry.AddInvoice(*invoice); err != nil {
|
|
paymentErr <- err
|
|
return &paymentResponse{
|
|
rhash: rhash,
|
|
err: paymentErr,
|
|
}
|
|
}
|
|
|
|
// Send payment and expose err channel.
|
|
go func() {
|
|
_, err := sender.htlcSwitch.SendHTLC(firstHopPub, htlc,
|
|
newMockDeobfuscator())
|
|
paymentErr <- err
|
|
}()
|
|
|
|
return &paymentResponse{
|
|
rhash: rhash,
|
|
err: paymentErr,
|
|
}
|
|
}
|
|
|
|
// start starts the three hop network alice,bob,carol servers.
|
|
func (n *threeHopNetwork) start() error {
|
|
if err := n.aliceServer.Start(); err != nil {
|
|
return err
|
|
}
|
|
if err := n.bobServer.Start(); err != nil {
|
|
return err
|
|
}
|
|
if err := n.carolServer.Start(); err != nil {
|
|
return err
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// stop stops nodes and cleanup its databases.
|
|
func (n *threeHopNetwork) stop() {
|
|
done := make(chan struct{})
|
|
go func() {
|
|
n.aliceServer.Stop()
|
|
done <- struct{}{}
|
|
}()
|
|
|
|
go func() {
|
|
n.bobServer.Stop()
|
|
done <- struct{}{}
|
|
}()
|
|
|
|
go func() {
|
|
n.carolServer.Stop()
|
|
done <- struct{}{}
|
|
}()
|
|
|
|
n.aliceTicker.Stop()
|
|
n.firstBobTicker.Stop()
|
|
n.secondBobTicker.Stop()
|
|
n.carolTicker.Stop()
|
|
|
|
for i := 0; i < 3; i++ {
|
|
<-done
|
|
}
|
|
}
|
|
|
|
type clusterChannels struct {
|
|
aliceToBob *lnwallet.LightningChannel
|
|
bobToAlice *lnwallet.LightningChannel
|
|
bobToCarol *lnwallet.LightningChannel
|
|
carolToBob *lnwallet.LightningChannel
|
|
}
|
|
|
|
// createClusterChannels creates lightning channels which are needed for
|
|
// network cluster to be initialized.
|
|
func createClusterChannels(aliceToBob, bobToCarol btcutil.Amount) (
|
|
*clusterChannels, func(), func() (*clusterChannels, error), error) {
|
|
|
|
firstChanID := lnwire.NewShortChanIDFromInt(4)
|
|
secondChanID := lnwire.NewShortChanIDFromInt(5)
|
|
|
|
// Create lightning channels between Alice<->Bob and Bob<->Carol
|
|
aliceChannel, firstBobChannel, cleanAliceBob, restoreAliceBob, err := createTestChannel(
|
|
alicePrivKey, bobPrivKey, aliceToBob, aliceToBob, firstChanID)
|
|
if err != nil {
|
|
return nil, nil, nil, errors.Errorf("unable to create "+
|
|
"alice<->bob channel: %v", err)
|
|
}
|
|
|
|
secondBobChannel, carolChannel, cleanBobCarol, restoreBobCarol, err := createTestChannel(
|
|
bobPrivKey, carolPrivKey, bobToCarol, bobToCarol, secondChanID)
|
|
if err != nil {
|
|
cleanAliceBob()
|
|
return nil, nil, nil, errors.Errorf("unable to create "+
|
|
"bob<->carol channel: %v", err)
|
|
}
|
|
|
|
cleanUp := func() {
|
|
cleanAliceBob()
|
|
cleanBobCarol()
|
|
}
|
|
|
|
restoreFromDb := func() (*clusterChannels, error) {
|
|
a2b, b2a, err := restoreAliceBob()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
b2c, c2b, err := restoreBobCarol()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return &clusterChannels{
|
|
aliceToBob: a2b,
|
|
bobToAlice: b2a,
|
|
bobToCarol: b2c,
|
|
carolToBob: c2b,
|
|
}, nil
|
|
}
|
|
|
|
return &clusterChannels{
|
|
aliceToBob: aliceChannel,
|
|
bobToAlice: firstBobChannel,
|
|
bobToCarol: secondBobChannel,
|
|
carolToBob: carolChannel,
|
|
}, cleanUp, restoreFromDb, nil
|
|
}
|
|
|
|
// newThreeHopNetwork function creates the following topology and returns the
|
|
// control object to manage this cluster:
|
|
//
|
|
// alice bob carol
|
|
// server - <-connection-> - server - - <-connection-> - - - server
|
|
// | | |
|
|
// alice htlc bob htlc carol htlc
|
|
// switch switch \ switch
|
|
// | | \ |
|
|
// | | \ |
|
|
// alice first bob second bob carol
|
|
// channel link channel link channel link channel link
|
|
//
|
|
func newThreeHopNetwork(t testing.TB, aliceChannel, firstBobChannel,
|
|
secondBobChannel, carolChannel *lnwallet.LightningChannel,
|
|
startingHeight uint32) *threeHopNetwork {
|
|
|
|
// Create three peers/servers.
|
|
aliceServer := newMockServer(t, "alice")
|
|
bobServer := newMockServer(t, "bob")
|
|
carolServer := newMockServer(t, "carol")
|
|
|
|
// Create mock decoder instead of sphinx one in order to mock the route
|
|
// which htlc should follow.
|
|
decoder := &mockIteratorDecoder{}
|
|
|
|
feeEstimator := &mockFeeEstimator{
|
|
byteFeeIn: make(chan btcutil.Amount),
|
|
weightFeeIn: make(chan btcutil.Amount),
|
|
quit: make(chan struct{}),
|
|
}
|
|
|
|
pCache := &mockPreimageCache{
|
|
// hash -> preimage
|
|
preimageMap: make(map[[32]byte][]byte),
|
|
}
|
|
|
|
globalPolicy := ForwardingPolicy{
|
|
MinHTLC: lnwire.NewMSatFromSatoshis(5),
|
|
BaseFee: lnwire.NewMSatFromSatoshis(1),
|
|
TimeLockDelta: 6,
|
|
}
|
|
obfuscator := newMockObfuscator()
|
|
|
|
aliceEpochChan := make(chan *chainntnfs.BlockEpoch)
|
|
aliceEpoch := &chainntnfs.BlockEpochEvent{
|
|
Epochs: aliceEpochChan,
|
|
Cancel: func() {
|
|
},
|
|
}
|
|
aliceTicker := time.NewTicker(50 * time.Millisecond)
|
|
aliceChannelLink := NewChannelLink(
|
|
ChannelLinkConfig{
|
|
FwrdingPolicy: globalPolicy,
|
|
Peer: bobServer,
|
|
Switch: aliceServer.htlcSwitch,
|
|
DecodeHopIterator: decoder.DecodeHopIterator,
|
|
DecodeOnionObfuscator: func(io.Reader) (ErrorEncrypter,
|
|
lnwire.FailCode) {
|
|
return obfuscator, lnwire.CodeNone
|
|
},
|
|
GetLastChannelUpdate: mockGetChanUpdateMessage,
|
|
Registry: aliceServer.registry,
|
|
BlockEpochs: aliceEpoch,
|
|
FeeEstimator: feeEstimator,
|
|
PreimageCache: pCache,
|
|
UpdateContractSignals: func(*contractcourt.ContractSignals) error {
|
|
return nil
|
|
},
|
|
ChainEvents: &contractcourt.ChainEventSubscription{},
|
|
SyncStates: true,
|
|
BatchTicker: &mockTicker{aliceTicker.C},
|
|
BatchSize: 10,
|
|
},
|
|
aliceChannel,
|
|
startingHeight,
|
|
)
|
|
if err := aliceServer.htlcSwitch.addLink(aliceChannelLink); err != nil {
|
|
t.Fatalf("unable to add alice channel link: %v", err)
|
|
}
|
|
go func() {
|
|
for {
|
|
select {
|
|
case <-aliceChannelLink.(*channelLink).htlcUpdates:
|
|
case <-aliceChannelLink.(*channelLink).quit:
|
|
return
|
|
}
|
|
}
|
|
}()
|
|
|
|
bobFirstEpochChan := make(chan *chainntnfs.BlockEpoch)
|
|
bobFirstEpoch := &chainntnfs.BlockEpochEvent{
|
|
Epochs: bobFirstEpochChan,
|
|
Cancel: func() {
|
|
},
|
|
}
|
|
firstBobTicker := time.NewTicker(50 * time.Millisecond)
|
|
firstBobChannelLink := NewChannelLink(
|
|
ChannelLinkConfig{
|
|
FwrdingPolicy: globalPolicy,
|
|
Peer: aliceServer,
|
|
Switch: bobServer.htlcSwitch,
|
|
DecodeHopIterator: decoder.DecodeHopIterator,
|
|
DecodeOnionObfuscator: func(io.Reader) (ErrorEncrypter,
|
|
lnwire.FailCode) {
|
|
return obfuscator, lnwire.CodeNone
|
|
},
|
|
GetLastChannelUpdate: mockGetChanUpdateMessage,
|
|
Registry: bobServer.registry,
|
|
BlockEpochs: bobFirstEpoch,
|
|
FeeEstimator: feeEstimator,
|
|
PreimageCache: pCache,
|
|
UpdateContractSignals: func(*contractcourt.ContractSignals) error {
|
|
return nil
|
|
},
|
|
ChainEvents: &contractcourt.ChainEventSubscription{},
|
|
SyncStates: true,
|
|
BatchTicker: &mockTicker{firstBobTicker.C},
|
|
BatchSize: 10,
|
|
},
|
|
firstBobChannel,
|
|
startingHeight,
|
|
)
|
|
if err := bobServer.htlcSwitch.addLink(firstBobChannelLink); err != nil {
|
|
t.Fatalf("unable to add first bob channel link: %v", err)
|
|
}
|
|
go func() {
|
|
for {
|
|
select {
|
|
case <-firstBobChannelLink.(*channelLink).htlcUpdates:
|
|
case <-firstBobChannelLink.(*channelLink).quit:
|
|
return
|
|
}
|
|
}
|
|
}()
|
|
|
|
bobSecondEpochChan := make(chan *chainntnfs.BlockEpoch)
|
|
bobSecondEpoch := &chainntnfs.BlockEpochEvent{
|
|
Epochs: bobSecondEpochChan,
|
|
Cancel: func() {
|
|
},
|
|
}
|
|
secondBobTicker := time.NewTicker(50 * time.Millisecond)
|
|
secondBobChannelLink := NewChannelLink(
|
|
ChannelLinkConfig{
|
|
FwrdingPolicy: globalPolicy,
|
|
Peer: carolServer,
|
|
Switch: bobServer.htlcSwitch,
|
|
DecodeHopIterator: decoder.DecodeHopIterator,
|
|
DecodeOnionObfuscator: func(io.Reader) (ErrorEncrypter,
|
|
lnwire.FailCode) {
|
|
return obfuscator, lnwire.CodeNone
|
|
},
|
|
GetLastChannelUpdate: mockGetChanUpdateMessage,
|
|
Registry: bobServer.registry,
|
|
BlockEpochs: bobSecondEpoch,
|
|
FeeEstimator: feeEstimator,
|
|
PreimageCache: pCache,
|
|
UpdateContractSignals: func(*contractcourt.ContractSignals) error {
|
|
return nil
|
|
},
|
|
ChainEvents: &contractcourt.ChainEventSubscription{},
|
|
SyncStates: true,
|
|
BatchTicker: &mockTicker{secondBobTicker.C},
|
|
BatchSize: 10,
|
|
},
|
|
secondBobChannel,
|
|
startingHeight,
|
|
)
|
|
if err := bobServer.htlcSwitch.addLink(secondBobChannelLink); err != nil {
|
|
t.Fatalf("unable to add second bob channel link: %v", err)
|
|
}
|
|
go func() {
|
|
for {
|
|
select {
|
|
case <-secondBobChannelLink.(*channelLink).htlcUpdates:
|
|
case <-secondBobChannelLink.(*channelLink).quit:
|
|
return
|
|
}
|
|
}
|
|
}()
|
|
|
|
carolBlockEpoch := make(chan *chainntnfs.BlockEpoch)
|
|
carolEpoch := &chainntnfs.BlockEpochEvent{
|
|
Epochs: bobSecondEpochChan,
|
|
Cancel: func() {
|
|
},
|
|
}
|
|
carolTicker := time.NewTicker(50 * time.Millisecond)
|
|
carolChannelLink := NewChannelLink(
|
|
ChannelLinkConfig{
|
|
FwrdingPolicy: globalPolicy,
|
|
Peer: bobServer,
|
|
Switch: carolServer.htlcSwitch,
|
|
DecodeHopIterator: decoder.DecodeHopIterator,
|
|
DecodeOnionObfuscator: func(io.Reader) (ErrorEncrypter,
|
|
lnwire.FailCode) {
|
|
return obfuscator, lnwire.CodeNone
|
|
},
|
|
GetLastChannelUpdate: mockGetChanUpdateMessage,
|
|
Registry: carolServer.registry,
|
|
BlockEpochs: carolEpoch,
|
|
FeeEstimator: feeEstimator,
|
|
PreimageCache: pCache,
|
|
UpdateContractSignals: func(*contractcourt.ContractSignals) error {
|
|
return nil
|
|
},
|
|
ChainEvents: &contractcourt.ChainEventSubscription{},
|
|
SyncStates: true,
|
|
BatchTicker: &mockTicker{carolTicker.C},
|
|
BatchSize: 10,
|
|
},
|
|
carolChannel,
|
|
startingHeight,
|
|
)
|
|
if err := carolServer.htlcSwitch.addLink(carolChannelLink); err != nil {
|
|
t.Fatalf("unable to add carol channel link: %v", err)
|
|
}
|
|
go func() {
|
|
for {
|
|
select {
|
|
case <-carolChannelLink.(*channelLink).htlcUpdates:
|
|
case <-carolChannelLink.(*channelLink).quit:
|
|
return
|
|
}
|
|
}
|
|
}()
|
|
|
|
return &threeHopNetwork{
|
|
aliceServer: aliceServer,
|
|
aliceChannelLink: aliceChannelLink.(*channelLink),
|
|
aliceBlockEpoch: aliceEpochChan,
|
|
aliceTicker: aliceTicker,
|
|
|
|
firstBobChannelLink: firstBobChannelLink.(*channelLink),
|
|
bobFirstBlockEpoch: bobFirstEpochChan,
|
|
firstBobTicker: firstBobTicker,
|
|
|
|
bobServer: bobServer,
|
|
secondBobChannelLink: secondBobChannelLink.(*channelLink),
|
|
bobSecondBlockEpoch: bobSecondEpochChan,
|
|
secondBobTicker: secondBobTicker,
|
|
|
|
carolChannelLink: carolChannelLink.(*channelLink),
|
|
carolServer: carolServer,
|
|
carolBlockEpoch: carolBlockEpoch,
|
|
carolTicker: carolTicker,
|
|
|
|
feeEstimator: feeEstimator,
|
|
globalPolicy: globalPolicy,
|
|
}
|
|
}
|