multi: cap anchors feerate at configurable maximum#4855
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Roasbeef
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Roasbeef
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As this is scheduled to land last, we can also use this PR to flip to zero-htlc fee anchors by default, and add the logic to reject the legacy anchors type (assuming we still need to advertise it), and also set up the proper feature dep.
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I think this'll need to check a new bit once the zero fee changes are in.
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cfromknecht
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looks good! only one small nit
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above we use commitType == lnwallet.CommitmentTypeAnchorsZeroFeeHtlcTx, should that match here? otherwise the maximum will also apply to anchor_outputs channels?
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Yes, see this commit in the zero htlc fee PR: 7b0212f#diff-e308f199858d836b06a0c920d2dd019fbb3acb7ef0d9e3d8a360601623128d78R322
So we'll always set both the anchors bit and the zero fee htlc bit if ommitType == lnwallet.CommitmentTypeAnchorsZeroFeeHtlcTx
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Correct that this'll apply to "regular" anchors as well, though with the dependent PR we essentially don't advertise it at all from teh perspective of the public network.
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Yeah, it will also apply the the existing few legacy anchor channels, but I think that's okay.
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This commit caps the update fee the initiator will send when the anchors channel type is used. We do not limit anything on the receiver side. 10 sat/vbyte is the current default max fee rate we use. This should be enough to ensure propagation before anchoring down the commitment transaction.
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Needs a rebase! |
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This commit caps the update fee the initiator will send when the anchors
channel type is used. We do not limit anything on the receiver side.
10 sat/vbyte is the current default max fee rate we use. This should be
enough to ensure propagation before anchoring down the commitment
transaction.
Replaces #4795