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initial_commit_tx, commit_tx: add anchor outputs if needed.

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This also means we subtract 660 satoshis more everywhere we subtract
the base fee (except for mutual close, where the base fee is still
used).

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell
2020-08-14 03:17:02 +09:30
parent 222d018b1a
commit e7423888ba
11 changed files with 268 additions and 30 deletions
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4
channeld/commit_tx.h
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@@ -14,6 +14,7 @@ struct keyset;
* @htlcs: tal_arr of HTLCs
* @feerate_per_kw: feerate to use
* @dust_limit: dust limit below which to trim outputs.
* @option_anchor_outputs: does option_anchor_outputs apply to this channel?
* @side: from which side's point of view
*
* We need @side because HTLC fees are different for offered and
@@ -22,6 +23,7 @@ struct keyset;
size_t commit_tx_num_untrimmed(const struct htlc **htlcs,
u32 feerate_per_kw,
struct amount_sat dust_limit,
bool option_anchor_outputs,
enum side side);
/**
@@ -39,6 +41,7 @@ size_t commit_tx_num_untrimmed(const struct htlc **htlcs,
* @htlc_map: outputed map of outnum->HTLC (NULL for direct outputs).
* @obscured_commitment_number: number to encode in commitment transaction
* @direct_outputs: If non-NULL, fill with pointers to the direct (non-HTLC) outputs (or NULL if none).
* @option_anchor_outputs: does option_anchor_outputs apply to this channel?
* @side: side to generate commitment transaction for.
*
* We need to be able to generate the remote side's tx to create signatures,
@@ -62,6 +65,7 @@ struct bitcoin_tx *commit_tx(const tal_t *ctx,
const struct htlc ***htlcmap,
struct wally_tx_output *direct_outputs[NUM_SIDES],
u64 obscured_commitment_number,
bool option_anchor_outputs,
enum side side);
#endif /* LIGHTNING_CHANNELD_COMMIT_TX_H */