Function handle_peer_tx_sigs_sent

lightningd/dual_open_control.c:1574–1666

}

static void handle_peer_tx_sigs_sent(struct subd *dualopend,
				     const int *fds,
				     const u8 *msg)
{
	struct channel *channel = dualopend->channel;
	struct channel_inflight *inflight;
	const struct wally_tx *wtx;

	if (!fromwire_dualopend_tx_sigs_sent(msg)) {
		channel_internal_error(channel,
				       "Bad WIRE_DUALOPEND_TX_SIGS_SENT: %s",
				       tal_hex(tmpctx, msg));
		return;
	}

	inflight = channel_current_inflight(channel);
	if (!inflight) {
		channel_internal_error(channel,
				       "No inflight found for channel %s",
				       type_to_string(tmpctx, struct channel,
						      channel));
		return;
	}

	/* Once we've sent our sigs to the peer, we're fine
	 * to broadcast the transaction, even if they haven't
	 * sent us their tx-sigs yet. They're not allowed to
	 * send us funding-locked until their tx-sigs has been
	 * received, but that's no reason not to broadcast.
	 * Note this only happens if we're the only input-er */
	if (psbt_finalize(inflight->funding_psbt) &&
	    !inflight->tx_broadcast) {
		inflight->tx_broadcast = true;

		wtx = psbt_final_tx(NULL, inflight->funding_psbt);
		if (!wtx) {
			channel_internal_error(channel,
					       "Unable to extract final tx"
					       " from PSBT %s",
					       type_to_string(tmpctx,
							      struct wally_psbt,
							      inflight->funding_psbt));
			return;
		}

		/* Saves the now finalized version of the psbt */
		wallet_inflight_save(dualopend->ld->wallet, inflight);
		send_funding_tx(channel, take(wtx));

		/* Must be in an "init" state */
		assert(channel->state == DUALOPEND_OPEN_INIT
		       || channel->state == DUALOPEND_AWAITING_LOCKIN);

		channel_set_state(channel, channel->state,
				  DUALOPEND_AWAITING_LOCKIN,
				  REASON_UNKNOWN,
				  "Sigs exchanged, waiting for lock-in");