Check for spendable_msat on trampoline pay
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cdecker
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Mar 6, 2025
| ) -> Result<Vec<(cln_rpc::primitives::ShortChannelId, u64)>> { | ||
| let mut acc = 0; | ||
| let mut choosen = vec![]; | ||
| while let Some(channel) = channels.pop() { |
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Simpler, but let's keep this as a cleanup, merge this one so we address the issue asap:
for c in channels.iter().filter(|c| c.spendable_msat.unwrap_or_default() > MIN_HTLC_AMOUNT) {
...
}And we can also add a second .filter() that filters out the ones that have spendable_msat below min_htlc_out_msat, no need to mix those conditions either.
We need to filter out channels that are drained and can not end out an htlc with an actual amount greater than 0. Signed-off-by: Peter Neuroth <pet.v.ne@gmail.com>
Signed-off-by: Peter Neuroth <pet.v.ne@gmail.com>
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JssDWt
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| let rest = amount_msat - acc; | ||
| choosen.push((channel.short_channel_id, rest)); | ||
| acc += rest; |
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There's still a case where rest does not add up to the minimum htlc amount. Do you know a good way to handle that?
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Right, we may want to check and skip those channels as well. 🤔
I'll add a follow up.
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We had some incidents where a trampoline payment created
0msatwhich lead to failed payments that actually did not fail. In order to avoid this we filter out channels that have aspendable_msatvalue of0or below theminimum_htlc_out_msat.