lnwallet: account for case where remote party has 2 unrevoked commits in DLP
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@ -3501,7 +3501,16 @@ func (lc *LightningChannel) ProcessChanSyncMsg(
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// as that's what they should send.
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case msg.NextLocalCommitHeight == remoteTailHeight+1:
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commitPoint = lc.channelState.RemoteCurrentRevocation
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// Alternatively, if their height is two beyond what we know their best
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// height to be, then they're holding onto two commitments, and the
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// highest unrevoked point it their next revocation.
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//
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// TODO(roasbeef): verify this in the spec...
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case msg.NextLocalCommitHeight == remoteTailHeight+2:
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commitPoint = lc.channelState.RemoteNextRevocation
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}
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if commitPoint != nil &&
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!commitPoint.IsEqual(msg.LocalUnrevokedCommitPoint) {
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@ -3513,6 +3522,7 @@ func (lc *LightningChannel) ProcessChanSyncMsg(
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if err := lc.channelState.MarkBorked(); err != nil {
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return nil, nil, nil, err
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}
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// TODO(halseth): force close?
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return nil, nil, nil, ErrInvalidLocalUnrevokedCommitPoint
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}
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