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lnwallet/channel: remove restoreHtlc from pendingRemoteCommit

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This commit removes the stage during updateLog restoration where we
would attempt to restore incoming HLTCs from the pendingRemoteCommit, in
addition to update our log and htlc counter to reflect this state. The
reason we can safely remove this is to observe that a pending remote
commit is always created from a commitDiff which only contains updates
made by _us_, and thus only taken from the localUpdateLog. The same can
be said for the counters, when creating a commitDiff we'll always use
the remoteACKedIndex as the index into the remoteUpdateLog, meaning that
all potential updates will already be included in the remote commit that
has been ACKed.
This commit is contained in:
Johan T. Halseth 2018-05-16 13:34:35 +02:00
parent fad7821e45
commit c1e96e01e6
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1 changed files with 0 additions and 16 deletions
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16
lnwallet/channel.go
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@ -1724,22 +1724,6 @@ func (lc *LightningChannel) restoreStateLogs(
return nil
}
// If we do have a dangling commitment for the remote party, then we'll
// also restore into the log any incoming HTLC's offered by them. Any
// outgoing HTLC's that were initially committed in this new state will
// be restored below.
for i := range pendingRemoteCommit.incomingHTLCs {
htlc := pendingRemoteCommit.incomingHTLCs[i]
lc.remoteUpdateLog.restoreHtlc(&htlc)
}
// We'll also update the log counters to match the latest known
// counters in this dangling commitment. Otherwise, our updateLog would
// have dated counters as it was initially created using their lowest
// unrevoked commitment.
lc.remoteUpdateLog.logIndex = pendingRemoteCommit.theirMessageIndex
lc.remoteUpdateLog.htlcCounter = pendingRemoteCommit.theirHtlcIndex
pendingCommit := pendingRemoteCommitDiff.Commitment
pendingHeight := pendingCommit.CommitHeight