breacharbiter: sweep incoming + outgoing htlcs
This commit also adds a BreachConfig to abstract the instantiation of the breach arbiter, as well as various formatting improvements.
This commit is contained in:
Conner Fromknecht
parent
b64d4356c1
commit
a8d667ba35
191
breacharbiter.go
191
breacharbiter.go
|
|
@ -30,6 +30,52 @@ import (
|
|||
// continue from the persisted state.
|
||||
var retributionBucket = []byte("retribution")
|
||||
|
||||
// BreachConfig bundles the required subsystems used by the breach arbiter. An
|
||||
// instance of BreachConfig is passed to newBreachArbiter during instantiation.
|
||||
type BreachConfig struct {
|
||||
// Signer is used by the breach arbiter to generate sweep transactions,
|
||||
// which move coins from previously open channels back to the user's
|
||||
// wallet.
|
||||
Signer lnwallet.Signer
|
||||
|
||||
// DB provides access to the user's channels, allowing the breach
|
||||
// arbiter to determine the current state of a user's channels, and how
|
||||
// it should respond to channel closure.
|
||||
DB *channeldb.DB
|
||||
|
||||
// PublishTransaction facilitates the process of broadcasting a
|
||||
// transaction to the network.
|
||||
PublishTransaction func(*wire.MsgTx) error
|
||||
|
||||
// Notifier provides a publish/subscribe interface for event driven
|
||||
// notifications regarding the confirmation of txids.
|
||||
Notifier chainntnfs.ChainNotifier
|
||||
|
||||
// ChainIO is used by the breach arbiter to determine the current height
|
||||
// of the blockchain, which is required to subscribe for spend
|
||||
// notifications from Notifier.
|
||||
ChainIO lnwallet.BlockChainIO
|
||||
|
||||
// Estimator is used by the breach arbiter to determine an appropriate
|
||||
// fee level when generating, signing, and broadcasting sweep
|
||||
// transactions.
|
||||
Estimator lnwallet.FeeEstimator
|
||||
|
||||
// CloseLink allows the breach arbiter to shutdown any channel links for
|
||||
// which it detects a breach, ensuring now further activity will
|
||||
// continue across the link. The method accepts link's channel point and a
|
||||
// close type to be included in the channel close summary.
|
||||
CloseLink func(*wire.OutPoint, htlcswitch.ChannelCloseType)
|
||||
|
||||
// Store is a persistent resource that maintains information regarding
|
||||
// breached channels. This is used in conjunction with DB to recover
|
||||
// from crashes, restarts, or other failures.
|
||||
Store RetributionStore
|
||||
|
||||
// GenSweepScript generates the receiving scripts for swept outputs.
|
||||
GenSweepScript func() ([]byte, error)
|
||||
}
|
||||
|
||||
// breachArbiter is a special subsystem which is responsible for watching and
|
||||
// acting on the detection of any attempted uncooperative channel breaches by
|
||||
// channel counterparties. This file essentially acts as deterrence code for
|
||||
|
|
@ -39,15 +85,7 @@ var retributionBucket = []byte("retribution")
|
|||
// counterparties.
|
||||
// TODO(roasbeef): closures in config for subsystem pointers to decouple?
|
||||
type breachArbiter struct {
|
||||
wallet *lnwallet.LightningWallet
|
||||
signer lnwallet.Signer
|
||||
db *channeldb.DB
|
||||
notifier chainntnfs.ChainNotifier
|
||||
chainIO lnwallet.BlockChainIO
|
||||
estimator lnwallet.FeeEstimator
|
||||
htlcSwitch *htlcswitch.Switch
|
||||
|
||||
retributionStore RetributionStore
|
||||
cfg *BreachConfig
|
||||
|
||||
// breachObservers is a map which tracks all the active breach
|
||||
// observers we're currently managing. The key of the map is the
|
||||
|
|
@ -82,20 +120,9 @@ type breachArbiter struct {
|
|||
|
||||
// newBreachArbiter creates a new instance of a breachArbiter initialized with
|
||||
// its dependent objects.
|
||||
func newBreachArbiter(wallet *lnwallet.LightningWallet, db *channeldb.DB,
|
||||
notifier chainntnfs.ChainNotifier, h *htlcswitch.Switch,
|
||||
chain lnwallet.BlockChainIO, fe lnwallet.FeeEstimator) *breachArbiter {
|
||||
|
||||
func newBreachArbiter(cfg *BreachConfig) *breachArbiter {
|
||||
return &breachArbiter{
|
||||
wallet: wallet,
|
||||
signer: wallet.Cfg.Signer,
|
||||
db: db,
|
||||
notifier: notifier,
|
||||
chainIO: chain,
|
||||
htlcSwitch: h,
|
||||
estimator: fe,
|
||||
|
||||
retributionStore: newRetributionStore(db),
|
||||
cfg: cfg,
|
||||
|
||||
breachObservers: make(map[wire.OutPoint]chan struct{}),
|
||||
breachedContracts: make(chan *retributionInfo),
|
||||
|
|
@ -121,7 +148,7 @@ func (b *breachArbiter) Start() error {
|
|||
// breach is reflected in channeldb.
|
||||
breachRetInfos := make(map[wire.OutPoint]retributionInfo)
|
||||
closeSummaries := make(map[wire.OutPoint]channeldb.ChannelCloseSummary)
|
||||
err := b.retributionStore.ForAll(func(ret *retributionInfo) error {
|
||||
err := b.cfg.Store.ForAll(func(ret *retributionInfo) error {
|
||||
// Extract emitted retribution information.
|
||||
breachRetInfos[ret.chanPoint] = *ret
|
||||
|
||||
|
|
@ -148,7 +175,7 @@ func (b *breachArbiter) Start() error {
|
|||
// We need to query that database state for all currently active
|
||||
// channels, each of these channels will need a goroutine assigned to
|
||||
// it to watch for channel breaches.
|
||||
activeChannels, err := b.db.FetchAllChannels()
|
||||
activeChannels, err := b.cfg.DB.FetchAllChannels()
|
||||
if err != nil && err != channeldb.ErrNoActiveChannels {
|
||||
brarLog.Errorf("unable to fetch active channels: %v", err)
|
||||
return err
|
||||
|
|
@ -185,8 +212,9 @@ func (b *breachArbiter) Start() error {
|
|||
channelsToWatch := make([]*lnwallet.LightningChannel, 0, nActive)
|
||||
for _, chanState := range activeChannels {
|
||||
// Initialize active channel from persisted channel state.
|
||||
channel, err := lnwallet.NewLightningChannel(nil, b.notifier,
|
||||
b.estimator, chanState)
|
||||
channel, err := lnwallet.NewLightningChannel(
|
||||
nil, b.cfg.Notifier, b.cfg.Estimator, chanState,
|
||||
)
|
||||
if err != nil {
|
||||
brarLog.Errorf("unable to load channel from "+
|
||||
"disk: %v", err)
|
||||
|
|
@ -205,10 +233,8 @@ func (b *breachArbiter) Start() error {
|
|||
// notify the HTLC switch that this link should be
|
||||
// closed, and that all activity on the link should
|
||||
// cease.
|
||||
b.htlcSwitch.CloseLink(
|
||||
&chanState.FundingOutpoint,
|
||||
htlcswitch.CloseBreach,
|
||||
)
|
||||
b.cfg.CloseLink(&chanState.FundingOutpoint,
|
||||
htlcswitch.CloseBreach)
|
||||
|
||||
// Ensure channeldb is consistent with the persisted
|
||||
// breach.
|
||||
|
|
@ -231,7 +257,7 @@ func (b *breachArbiter) Start() error {
|
|||
}
|
||||
|
||||
// TODO(roasbeef): instead use closure height of channel
|
||||
_, currentHeight, err := b.chainIO.GetBestBlock()
|
||||
_, currentHeight, err := b.cfg.ChainIO.GetBestBlock()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
|
@ -249,7 +275,7 @@ func (b *breachArbiter) Start() error {
|
|||
// Register for a notification when the breach transaction is
|
||||
// confirmed on chain.
|
||||
breachTXID := closeSummary.ClosingTXID
|
||||
confChan, err := b.notifier.RegisterConfirmationsNtfn(
|
||||
confChan, err := b.cfg.Notifier.RegisterConfirmationsNtfn(
|
||||
&breachTXID, 1, uint32(currentHeight))
|
||||
if err != nil {
|
||||
brarLog.Errorf("unable to register for conf updates "+
|
||||
|
|
@ -293,7 +319,7 @@ func (b *breachArbiter) watchForPendingCloseConfs(currentHeight int32) error {
|
|||
pendingClose.ChanPoint)
|
||||
|
||||
closeTXID := pendingClose.ClosingTXID
|
||||
confNtfn, err := b.notifier.RegisterConfirmationsNtfn(
|
||||
confNtfn, err := b.cfg.Notifier.RegisterConfirmationsNtfn(
|
||||
&closeTXID, 1, uint32(currentHeight),
|
||||
)
|
||||
if err != nil {
|
||||
|
|
@ -321,10 +347,10 @@ func (b *breachArbiter) watchForPendingCloseConfs(currentHeight int32) error {
|
|||
// UnilateralCloseSummary on disk so can
|
||||
// possibly sweep output here
|
||||
|
||||
err := b.db.MarkChanFullyClosed(&chanPoint)
|
||||
err := b.cfg.DB.MarkChanFullyClosed(&chanPoint)
|
||||
if err != nil {
|
||||
brarLog.Errorf("unable to mark channel "+
|
||||
"as closed: %v", err)
|
||||
brarLog.Errorf("unable to mark channel"+
|
||||
" as closed: %v", err)
|
||||
}
|
||||
|
||||
case <-b.quit:
|
||||
|
|
@ -385,7 +411,7 @@ out:
|
|||
for {
|
||||
select {
|
||||
case breachInfo := <-b.breachedContracts:
|
||||
_, currentHeight, err := b.chainIO.GetBestBlock()
|
||||
_, currentHeight, err := b.cfg.ChainIO.GetBestBlock()
|
||||
if err != nil {
|
||||
brarLog.Errorf("unable to get best height: %v",
|
||||
err)
|
||||
|
|
@ -397,7 +423,7 @@ out:
|
|||
// transaction) has been confirmed in the chain to
|
||||
// ensure we're not dealing with a moving target.
|
||||
breachTXID := &breachInfo.commitHash
|
||||
confChan, err := b.notifier.RegisterConfirmationsNtfn(
|
||||
cfChan, err := b.cfg.Notifier.RegisterConfirmationsNtfn(
|
||||
breachTXID, 1, uint32(currentHeight),
|
||||
)
|
||||
if err != nil {
|
||||
|
|
@ -417,7 +443,7 @@ out:
|
|||
// retribution after the breach transaction has been
|
||||
// confirmed.
|
||||
b.wg.Add(1)
|
||||
go b.exactRetribution(confChan, breachInfo)
|
||||
go b.exactRetribution(cfChan, breachInfo)
|
||||
|
||||
delete(b.breachObservers, breachInfo.chanPoint)
|
||||
|
||||
|
|
@ -523,7 +549,7 @@ func (b *breachArbiter) exactRetribution(
|
|||
return spew.Sdump(justiceTx)
|
||||
}))
|
||||
|
||||
_, currentHeight, err := b.chainIO.GetBestBlock()
|
||||
_, currentHeight, err := b.cfg.ChainIO.GetBestBlock()
|
||||
if err != nil {
|
||||
brarLog.Errorf("unable to get current height: %v", err)
|
||||
return
|
||||
|
|
@ -531,7 +557,7 @@ func (b *breachArbiter) exactRetribution(
|
|||
|
||||
// Finally, broadcast the transaction, finalizing the channels'
|
||||
// retribution against the cheating counterparty.
|
||||
if err := b.wallet.PublishTransaction(justiceTx); err != nil {
|
||||
if err := b.cfg.PublishTransaction(justiceTx); err != nil {
|
||||
brarLog.Errorf("unable to broadcast "+
|
||||
"justice tx: %v", err)
|
||||
return
|
||||
|
|
@ -542,8 +568,8 @@ func (b *breachArbiter) exactRetribution(
|
|||
// notify the caller that initiated the retribution workflow that the
|
||||
// deed has been done.
|
||||
justiceTXID := justiceTx.TxHash()
|
||||
confChan, err = b.notifier.RegisterConfirmationsNtfn(&justiceTXID, 1,
|
||||
uint32(currentHeight))
|
||||
confChan, err = b.cfg.Notifier.RegisterConfirmationsNtfn(
|
||||
&justiceTXID, 1, uint32(currentHeight))
|
||||
if err != nil {
|
||||
brarLog.Errorf("unable to register for conf for txid: %v",
|
||||
justiceTXID)
|
||||
|
|
@ -566,14 +592,14 @@ func (b *breachArbiter) exactRetribution(
|
|||
revokedFunds, totalFunds)
|
||||
|
||||
// With the channel closed, mark it in the database as such.
|
||||
err := b.db.MarkChanFullyClosed(&breachInfo.chanPoint)
|
||||
err := b.cfg.DB.MarkChanFullyClosed(&breachInfo.chanPoint)
|
||||
if err != nil {
|
||||
brarLog.Errorf("unable to mark chan as closed: %v", err)
|
||||
}
|
||||
|
||||
// Justice has been carried out; we can safely delete the
|
||||
// retribution info from the database.
|
||||
err = b.retributionStore.Remove(&breachInfo.chanPoint)
|
||||
err = b.cfg.Store.Remove(&breachInfo.chanPoint)
|
||||
if err != nil {
|
||||
brarLog.Errorf("unable to remove retribution "+
|
||||
"from the db: %v", err)
|
||||
|
|
@ -640,7 +666,7 @@ func (b *breachArbiter) breachObserver(contract *lnwallet.LightningChannel,
|
|||
// TODO(roasbeef): also notify utxoNursery, might've had
|
||||
// outbound HTLC's in flight
|
||||
go waitForChanToClose(uint32(closeInfo.SpendingHeight),
|
||||
b.notifier, nil, chanPoint, closeInfo.SpenderTxHash,
|
||||
b.cfg.Notifier, nil, chanPoint, closeInfo.SpenderTxHash,
|
||||
func() {
|
||||
// As we just detected a channel was closed via
|
||||
// a unilateral commitment broadcast by the
|
||||
|
|
@ -661,13 +687,11 @@ func (b *breachArbiter) breachObserver(contract *lnwallet.LightningChannel,
|
|||
goto close
|
||||
}
|
||||
|
||||
brarLog.Infof("Sweeping %v breached "+
|
||||
brarLog.Infof("Sweeping breached "+
|
||||
"outputs with: %v",
|
||||
spew.Sdump(sweepTx))
|
||||
|
||||
err = b.wallet.PublishTransaction(
|
||||
sweepTx,
|
||||
)
|
||||
err = b.cfg.PublishTransaction(sweepTx)
|
||||
if err != nil {
|
||||
brarLog.Errorf("unable to "+
|
||||
"broadcast tx: %v", err)
|
||||
|
|
@ -679,7 +703,7 @@ func (b *breachArbiter) breachObserver(contract *lnwallet.LightningChannel,
|
|||
"is fully closed, updating DB",
|
||||
chanPoint)
|
||||
|
||||
err := b.db.MarkChanFullyClosed(chanPoint)
|
||||
err := b.cfg.DB.MarkChanFullyClosed(chanPoint)
|
||||
if err != nil {
|
||||
brarLog.Errorf("unable to mark chan "+
|
||||
"as closed: %v", err)
|
||||
|
|
@ -699,7 +723,7 @@ func (b *breachArbiter) breachObserver(contract *lnwallet.LightningChannel,
|
|||
// breached in order to ensure any incoming or outgoing
|
||||
// multi-hop HTLCs aren't sent over this link, nor any other
|
||||
// links associated with this peer.
|
||||
b.htlcSwitch.CloseLink(chanPoint, htlcswitch.CloseBreach)
|
||||
b.cfg.CloseLink(chanPoint, htlcswitch.CloseBreach)
|
||||
|
||||
// TODO(roasbeef): need to handle case of remote broadcast
|
||||
// mid-local initiated state-transition, possible
|
||||
|
|
@ -715,7 +739,7 @@ func (b *breachArbiter) breachObserver(contract *lnwallet.LightningChannel,
|
|||
retInfo := newRetributionInfo(chanPoint, breachInfo, chanInfo)
|
||||
|
||||
// Persist the pending retribution state to disk.
|
||||
if err := b.retributionStore.Add(retInfo); err != nil {
|
||||
if err := b.cfg.Store.Add(retInfo); err != nil {
|
||||
brarLog.Errorf("unable to persist retribution info "+
|
||||
"to db: %v", err)
|
||||
}
|
||||
|
|
@ -795,7 +819,7 @@ type breachedOutput struct {
|
|||
amt btcutil.Amount
|
||||
outpoint wire.OutPoint
|
||||
witnessType lnwallet.WitnessType
|
||||
signDesc *lnwallet.SignDescriptor
|
||||
signDesc lnwallet.SignDescriptor
|
||||
|
||||
witnessFunc lnwallet.WitnessGenerator
|
||||
}
|
||||
|
|
@ -812,7 +836,7 @@ func newBreachedOutput(outpoint *wire.OutPoint,
|
|||
amt: btcutil.Amount(amount),
|
||||
outpoint: *outpoint,
|
||||
witnessType: witnessType,
|
||||
signDesc: signDescriptor,
|
||||
signDesc: *signDescriptor,
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -841,8 +865,7 @@ func (bo *breachedOutput) BuildWitness(signer lnwallet.Signer,
|
|||
// been initialized for this breached output.
|
||||
if bo.witnessFunc == nil {
|
||||
bo.witnessFunc = bo.witnessType.GenWitnessFunc(
|
||||
signer,
|
||||
bo.signDesc,
|
||||
signer, &bo.signDesc,
|
||||
)
|
||||
}
|
||||
|
||||
|
|
@ -923,13 +946,21 @@ func newRetributionInfo(chanPoint *wire.OutPoint,
|
|||
// deterministically generate a valid witness for each output. This will
|
||||
// allow the breach arbiter to recover from failures, in the event that
|
||||
// it must sign and broadcast the justice transaction.
|
||||
var htlcOutputs = make([]*breachedOutput, nHtlcs)
|
||||
htlcOutputs := make([]*breachedOutput, nHtlcs)
|
||||
for i, breachedHtlc := range breachInfo.HtlcRetributions {
|
||||
// Using the breachedHtlc's incoming flag, determine the
|
||||
// appropriate witness type that needs to be generated in order
|
||||
// to sweep the HTLC output.
|
||||
var htlcWitnessType lnwallet.WitnessType
|
||||
if breachedHtlc.IsIncoming {
|
||||
htlcWitnessType = lnwallet.HtlcAcceptedRevoke
|
||||
} else {
|
||||
htlcWitnessType = lnwallet.HtlcOfferedRevoke
|
||||
}
|
||||
|
||||
htlcOutputs[i] = newBreachedOutput(
|
||||
&breachedHtlc.OutPoint,
|
||||
lnwallet.CommitmentRevoke,
|
||||
&breachedHtlc.SignDesc,
|
||||
)
|
||||
&breachInfo.HtlcRetributions[i].OutPoint, htlcWitnessType,
|
||||
&breachInfo.HtlcRetributions[i].SignDesc)
|
||||
}
|
||||
|
||||
// TODO(conner): remove dependency on channel snapshot after decoupling
|
||||
|
|
@ -960,24 +991,35 @@ func (b *breachArbiter) createJusticeTx(
|
|||
// Assemble the breached outputs into a slice of spendable outputs,
|
||||
// starting with the self and revoked outputs, then adding any htlc
|
||||
// outputs.
|
||||
var breachedOutputs = make([]SpendableOutput, 2+nHtlcs)
|
||||
breachedOutputs := make([]SpendableOutput, 2+nHtlcs)
|
||||
breachedOutputs[0] = r.selfOutput
|
||||
breachedOutputs[1] = r.revokedOutput
|
||||
for i, htlcOutput := range r.htlcOutputs {
|
||||
breachedOutputs[2+i] = htlcOutput
|
||||
}
|
||||
|
||||
// Compute the transaction weight of the justice transaction, which
|
||||
// includes 2 + nHtlcs inputs and one output.
|
||||
var txWeight uint64
|
||||
// Begin with a base txn weight, e.g. version, nLockTime, etc.
|
||||
txWeight += 4*lnwallet.BaseSweepTxSize + lnwallet.WitnessHeaderSize
|
||||
|
||||
// Add to_local revoke script and tx input.
|
||||
txWeight += 4*lnwallet.InputSize + lnwallet.ToLocalPenaltyWitnessSize
|
||||
// Add to_remote p2wpkh witness and tx input.
|
||||
txWeight += 4*lnwallet.InputSize + lnwallet.P2WKHWitnessSize
|
||||
// Add revoked offered-htlc witnesses and tx inputs.
|
||||
txWeight += uint64(len(r.htlcOutputs)) *
|
||||
(4*lnwallet.InputSize + lnwallet.OfferedHtlcWitnessSize)
|
||||
|
||||
// Compute the appropriate weight contributed by each revoked accepted
|
||||
// or offered HTLC witnesses and tx inputs.
|
||||
for _, htlcOutput := range r.htlcOutputs {
|
||||
switch htlcOutput.witnessType {
|
||||
case lnwallet.HtlcOfferedRevoke:
|
||||
txWeight += 4*lnwallet.InputSize +
|
||||
lnwallet.OfferedHtlcPenaltyWitnessSize
|
||||
case lnwallet.HtlcAcceptedRevoke:
|
||||
txWeight += 4*lnwallet.InputSize +
|
||||
lnwallet.AcceptedHtlcPenaltyWitnessSize
|
||||
}
|
||||
}
|
||||
|
||||
return b.sweepSpendableOutputsTxn(txWeight, breachedOutputs...)
|
||||
}
|
||||
|
|
@ -999,6 +1041,8 @@ func (b *breachArbiter) craftCommitSweepTx(
|
|||
closeInfo.SelfOutputSignDesc,
|
||||
)
|
||||
|
||||
// Compute the transaction weight of the commit sweep transaction, which
|
||||
// includes a single input and output.
|
||||
var txWeight uint64
|
||||
// Begin with a base txn weight, e.g. version, nLockTime, etc.
|
||||
txWeight += 4*lnwallet.BaseSweepTxSize + lnwallet.WitnessHeaderSize
|
||||
|
|
@ -1017,7 +1061,7 @@ func (b *breachArbiter) sweepSpendableOutputsTxn(txWeight uint64,
|
|||
// sweep the funds to.
|
||||
// TODO(roasbeef): possibly create many outputs to minimize change in
|
||||
// the future?
|
||||
pkScript, err := newSweepPkScript(b.wallet)
|
||||
pkScript, err := b.cfg.GenSweepScript()
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
|
@ -1028,14 +1072,14 @@ func (b *breachArbiter) sweepSpendableOutputsTxn(txWeight uint64,
|
|||
totalAmt += input.Amount()
|
||||
}
|
||||
|
||||
feePerWeight := b.estimator.EstimateFeePerWeight(1)
|
||||
feePerWeight := b.cfg.Estimator.EstimateFeePerWeight(1)
|
||||
txFee := btcutil.Amount(txWeight * feePerWeight)
|
||||
|
||||
sweepAmt := int64(totalAmt - txFee)
|
||||
|
||||
// With the fee calculated, we can now create the transaction using the
|
||||
// information gathered above and the provided retribution information.
|
||||
var txn = wire.NewMsgTx(2)
|
||||
txn := wire.NewMsgTx(2)
|
||||
|
||||
// We begin by adding the output to which our funds will be deposited.
|
||||
txn.AddTxOut(&wire.TxOut{
|
||||
|
|
@ -1072,7 +1116,7 @@ func (b *breachArbiter) sweepSpendableOutputsTxn(txWeight uint64,
|
|||
// transaction using the SpendableOutput's witness generation
|
||||
// function.
|
||||
witness, err := so.BuildWitness(
|
||||
b.wallet.Cfg.Signer, txn, hashCache, idx,
|
||||
b.cfg.Signer, txn, hashCache, idx,
|
||||
)
|
||||
if err != nil {
|
||||
return err
|
||||
|
|
@ -1339,7 +1383,7 @@ func (bo *breachedOutput) Encode(w io.Writer) error {
|
|||
return err
|
||||
}
|
||||
|
||||
if err := lnwallet.WriteSignDescriptor(w, bo.signDesc); err != nil {
|
||||
if err := lnwallet.WriteSignDescriptor(w, &bo.signDesc); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
|
|
@ -1364,8 +1408,7 @@ func (bo *breachedOutput) Decode(r io.Reader) error {
|
|||
return err
|
||||
}
|
||||
|
||||
bo.signDesc = &lnwallet.SignDescriptor{}
|
||||
if err := lnwallet.ReadSignDescriptor(r, bo.signDesc); err != nil {
|
||||
if err := lnwallet.ReadSignDescriptor(r, &bo.signDesc); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user