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Use local dust limit in local commit fee computation (#2765)

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Whenever we use the local commit, we must use the local dust limit to
trim HTLCs. Similarly, whenever we use the remote commit, we must use
the remote dust limit.
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Bastien Teinturier 2023-11-03 13:24:42 +01:00 • committed by GitHub
parent ca3f6814a4
commit a3d90ad18a
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eclair-core/src/main/scala/fr/acinq/eclair/channel/Commitments.scala
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@ -506,7 +506,7 @@ case class Commitment(fundingTxIndex: Long,
val incomingHtlcs = reduced.htlcs.collect(DirectedHtlc.incoming)
// note that the initiator pays the fee, so if sender != initiator, both sides will have to afford this payment
val fees = commitTxTotalCost(params.remoteParams.dustLimit, reduced, params.commitmentFormat)
val fees = commitTxTotalCost(params.localParams.dustLimit, reduced, params.commitmentFormat)
// NB: we don't enforce the funderFeeReserve (see sendAdd) because it would confuse a remote initiator that doesn't have this mitigation in place
// We could enforce it once we're confident a large portion of the network implements it.
val missingForSender = reduced.toRemote - remoteChannelReserve(params) - (if (params.localParams.isInitiator) 0.sat else fees)