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@ -64,7 +64,7 @@ void tx_add_anchor_output(struct bitcoin_tx *tx, |
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u8 *wscript = bitcoin_wscript_anchor(tmpctx, funding_key); |
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u8 *p2wsh = scriptpubkey_p2wsh(tmpctx, wscript); |
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/* BOLT-a12da24dd0102c170365124782b46d9710950ac1 #3:
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/* BOLT #3:
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* The amount of the output is fixed at 330 sats, the default |
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* dust limit for P2WSH. |
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*/ |
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@ -122,7 +122,7 @@ struct bitcoin_tx *initial_commit_tx(const tal_t *ctx, |
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base_fee = commit_tx_base_fee(feerate_per_kw, untrimmed, |
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option_anchor_outputs); |
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/* BOLT-a12da24dd0102c170365124782b46d9710950ac1:
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/* BOLT:
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* If `option_anchor_outputs` applies to the commitment |
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* transaction, also subtract two times the fixed anchor size |
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* of 330 sats from the funder (either `to_local` or |
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@ -137,7 +137,10 @@ struct bitcoin_tx *initial_commit_tx(const tal_t *ctx, |
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/* BOLT #3:
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* |
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* 3. Subtract this base fee from the funder (either `to_local` or |
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* `to_remote`), with a floor of 0 (see [Fee Payment](#fee-payment)). |
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* `to_remote`). |
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* If `option_anchor_outputs` applies to the commitment transaction, |
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* also subtract two times the fixed anchor size of 330 sats from the |
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* funder (either `to_local` or `to_remote`). |
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*/ |
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if (!try_subtract_fee(opener, side, base_fee, &self_pay, &other_pay)) { |
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/* BOLT #2:
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@ -188,19 +191,19 @@ struct bitcoin_tx *initial_commit_tx(const tal_t *ctx, |
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n = 0; |
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/* BOLT #3:
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* |
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* 3. For every offered HTLC, if it is not trimmed, add an |
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* 4. For every offered HTLC, if it is not trimmed, add an |
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* [offered HTLC output](#offered-htlc-outputs). |
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*/ |
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/* BOLT #3:
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* |
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* 4. For every received HTLC, if it is not trimmed, add an |
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* 5. For every received HTLC, if it is not trimmed, add an |
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* [received HTLC output](#received-htlc-outputs). |
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*/ |
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/* BOLT #3:
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* |
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* 5. If the `to_local` amount is greater or equal to |
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* 6. If the `to_local` amount is greater or equal to |
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* `dust_limit_satoshis`, add a [`to_local` |
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* output](#to_local-output). |
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*/ |
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@ -218,12 +221,12 @@ struct bitcoin_tx *initial_commit_tx(const tal_t *ctx, |
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/* BOLT #3:
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* |
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* 6. If the `to_remote` amount is greater or equal to |
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* 7. If the `to_remote` amount is greater or equal to |
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* `dust_limit_satoshis`, add a [`to_remote` |
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* output](#to_remote-output). |
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*/ |
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if (amount_msat_greater_eq_sat(other_pay, dust_limit)) { |
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/* BOLT-a12da24dd0102c170365124782b46d9710950ac1 #3:
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/* BOLT #3:
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* |
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* If `option_anchor_outputs` applies to the commitment |
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* transaction, the `to_remote` output is encumbered by a one |
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@ -252,19 +255,20 @@ struct bitcoin_tx *initial_commit_tx(const tal_t *ctx, |
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} else |
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to_remote = false; |
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/* BOLT #3:
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* 8. If `option_anchor_outputs` applies to the commitment transaction: |
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* * if `to_local` exists or there are untrimmed HTLCs, add a |
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* `to_local_anchor` output |
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* * if `to_remote` exists or there are untrimmed HTLCs, add a |
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* `to_remote_anchor` output |
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*/ |
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if (option_anchor_outputs) { |
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/* BOLT-a12da24dd0102c170365124782b46d9710950ac1 #3:
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* if `to_local` exists or there are untrimmed HTLCs, add a `to_local_anchor` output |
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*/ |
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if (to_local || untrimmed != 0) { |
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tx_add_anchor_output(tx, &funding_key[side]); |
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output_order[n] = NULL; |
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n++; |
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} |
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/* BOLT-a12da24dd0102c170365124782b46d9710950ac1 #3:
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* if `to_remote` exists or there are untrimmed HTLCs, add a `to_remote_anchor` output |
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*/ |
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if (to_remote || untrimmed != 0) { |
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tx_add_anchor_output(tx, &funding_key[!side]); |
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output_order[n] = NULL; |
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@ -276,7 +280,7 @@ struct bitcoin_tx *initial_commit_tx(const tal_t *ctx, |
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/* BOLT #3:
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* |
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* 7. Sort the outputs into [BIP 69+CLTV |
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* 9. Sort the outputs into [BIP 69+CLTV |
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* order](#transaction-input-and-output-ordering) |
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*/ |
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permute_outputs(tx, NULL, output_order); |
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Rusty Russell
4 years ago