Function handle_send_tx_sigs

openingd/dualopend.c:1007–1047

}

static void handle_send_tx_sigs(struct state *state, const u8 *msg)
{
	struct wally_psbt *psbt;
	struct bitcoin_txid txid;
	struct tx_state *tx_state = state->tx_state;

	if (!fromwire_dualopend_send_tx_sigs(tmpctx, msg, &psbt))
		master_badmsg(WIRE_DUALOPEND_SEND_TX_SIGS, msg);

	/* Check that we've got the same / correct PSBT */
	psbt_txid(NULL, psbt, &txid, NULL);
	if (!bitcoin_txid_eq(&txid, &tx_state->funding.txid))
		status_failed(STATUS_FAIL_INTERNAL_ERROR,
			      "TXID for passed in PSBT does not match"
			      " funding txid for channel. Expected %s, "
			      "received %s",
			      type_to_string(tmpctx, struct bitcoin_txid,
					     &tx_state->funding.txid),
			      type_to_string(tmpctx, struct bitcoin_txid,
					     &txid));

	tal_wally_start();
	if (wally_psbt_combine(tx_state->psbt, psbt) != WALLY_OK) {
		tal_wally_end(tal_free(tx_state->psbt));
		status_failed(STATUS_FAIL_INTERNAL_ERROR,
			      "Unable to combine PSBTs. received %s\n"
			      "local %s",
			      type_to_string(tmpctx, struct wally_psbt,
					     psbt),
			      type_to_string(tmpctx, struct wally_psbt,
					     tx_state->psbt));
	}
	tal_wally_end(tx_state->psbt);

	/*  Send our sigs to peer */
	msg = psbt_to_tx_sigs_msg(tmpctx, state, tx_state->psbt);
	peer_write(state->pps, take(msg));

	/* Notify lightningd that we've sent sigs */
	wire_sync_write(REQ_FD, take(towire_dualopend_tx_sigs_sent(NULL)));
}

static struct wally_psbt *
fetch_psbt_changes(struct state *state,