Not possible to force closing inactive channel without specifying custom fee? about lndclient HOT 3 CLOSED

Force closing a channel means publishing the latest pre-signed channel state. So you cannot override the fee rate as that would require your peer to re-sign the transaction. So not related to lndclient at all. If you pass in true for force close, you also need to pass in 0 as fees.

from lndclient.

Yep, that makes sense. I just figured it would make more sense for the fee argument to be simply ignored if force closure was indicated.

Furthermore, the following attempt seems mark the channel as force closing, but the transaction isn't actually broadcasted onchain. Am I missing something?

closeUpdates, closeErrors, err := m.lndService.Client.CloseChannel(m.ctx, outPoint, true, 0, nil)

EDIT: Checked logs:

2024-01-09 07:04:49.684 [WRN] CNCT: Unable to broadcast force close tx(8d8c20b37300eb389b3bc87360dff661c111089099add8db2c6a842efd0396cf): transaction rejected by the mempool because of low fees: mempool fee not met: -26: mempool min fee not met, 3100 < 6207

from lndclient.

Yeah, fee too low for your mempool. Need to increase -maxmempool of your bitcoind node.

from lndclient.