txbatcher: don't spend anchors if ctx fee is already sufficient#10093
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SomberNight merged 2 commits intospesmilo:masterfrom Feb 28, 2026
Merged
txbatcher: don't spend anchors if ctx fee is already sufficient#10093SomberNight merged 2 commits intospesmilo:masterfrom
SomberNight merged 2 commits intospesmilo:masterfrom
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| self.logger.info(f"anchor not needed {prevout}") | ||
| self.batch_inputs.pop(prevout) # note: if the input is already in a batch tx, this will trigger assert error | ||
| continue | ||
| prev_tx_current_fee = self.wallet.adb.get_tx_fee(prev_txid) |
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Just a note: I believe currently it just so happens that this does not occur here, but adb.get_tx_fee in some cases trusts the electrum server for the fee instead of calculating it itself.
Atm this does not seem to be the case as all the addresses watched by lnwatcher count as adb.is_mine and this includes the anchor outputs.
If the tx fee of the ctx is already higher than the required target it is not useful to spend the anchor with a lower fee (the current target), so instead it is skipped.
Adds unittest for `TxBatch._to_sweep_after()` anchor claiming part.
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If the tx fee of the ctx is already higher than the required target it is not useful to spend the anchor so instead it is skipped.
As a side effect the closing tx is not shown in the history anymore until any output got claimed, only the lightning part of the closing group is shown, but the closing tx can be found in the channel details:
This is because
sweep_commitment_transactiononly adds the anchor and to_local outputs to the accounting addresses once there is a (nonlocal) spending tx, so it is missed byget_onchain_history(), same issue(?) for SRK channels. However only declaring them "accounting address" after the sweep seems intentional:electrum/electrum/wallet.py
Line 420 in dfd480d