--- Log opened Sun Sep 28 00:00:53 2025
05:09 < pinheadmz> Im trying to better understand the max HTLC limit. BOLT 2 says 483 per direction (?) meaning there is something about a 966-HTLC commitment tx that pushes some L1 mempool standardness (or on-chain consensus?) limit I assume? But in practice I am running channel jamming tests with LND and observing that payments fail once 293 HTLCs are pending in one direction in a channel, so Im wondering what the discrepency is
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05:58 < BlueMatt[m]> there's a configurable lower-limit. nodes can select it down from 483
05:58 < BlueMatt[m]> i dunno what the default in lnd is but its probably configurable
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07:06 < pinheadmz> well im trying to understand the rationale for both values: the BOLT max of 966 as well ass the LND value. I can't find a hard coded constant in LND so I assume its computed on the fly based on... something ?
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07:13 < BlueMatt[m]> Yea I have no idea about the lnd one. The spec one results in 100kb commitment transactions
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07:33 < pinheadmz> ok and in weight units thats ~400000 which is policy limit ?
07:34 < BlueMatt[m]> Yep!
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07:39 < pinheadmz> So its got nothing to do with the second stage tx, or what happens with weight or descendant limit if someone tries to sweep 966 HTLCs in the mempool in one tx?
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07:49 < BlueMatt[m]> I believe that would fail, yes
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16:43 < _aj_> i thought the ~100kB tx was the sweep tx if you swept all the outputs at once? see the para preceding https://github.com/lightning/bolts/blob/master/05-onchain.md#generation-of-htlc-transactions
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--- Log closed Mon Sep 29 00:00:53 2025