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funding tx: include segwit marker + flag in fee calculation

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Noticed an off by one error when running tests for dual-funding;
we're not including the two 'header' segwit bytes in our weight
calculations.
This commit is contained in:
lisa neigut
2019-07-31 18:53:55 -05:00
committed by Rusty Russell
parent b0b6ddb66f
commit c7f3fa34b2
3 changed files with 7 additions and 1 deletions
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3
common/wallet_tx.c
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@@ -184,7 +184,8 @@ struct command_result *wtx_from_utxos(struct wallet_tx *tx,
/* The transaction has `tal_count(tx.utxos)` inputs and one output */
/* (version + in count + out count + locktime) (index + value + script length) */
weight = 4 * (4 + 1 + 1 + 4) + 4 * (8 + 1 + out_len);
/* + segwit marker + flag */
weight = 4 * (4 + 1 + 1 + 4) + 4 * (8 + 1 + out_len) + 1 + 1;
for (size_t i = 0; i < tal_count(utxos); i++) {
if (!*utxos[i]->blockheight || *utxos[i]->blockheight > maxheight) {
tal_arr_remove(&utxos, i);