Function perform_fundpsbt

plugins/spender/multifundchannel.c:1374–1486

}

static struct command_result *
perform_fundpsbt(struct multifundchannel_command *mfc, u32 feerate)
{
	struct out_req *req;

	/* If the user specified utxos we should use utxopsbt instead
	 * of fundpsbt.  */
	if (mfc->utxos_str) {
		plugin_log(mfc->cmd->plugin, LOG_DBG,
			   "mfc %"PRIu64": utxopsbt.",
			   mfc->id);

		req = jsonrpc_request_start(mfc->cmd->plugin,
					    mfc->cmd,
					    "utxopsbt",
					    &after_fundpsbt,
					    &mfc_forward_error,
					    mfc);
		json_add_jsonstr(req->js, "utxos",
				 mfc->utxos_str, strlen(mfc->utxos_str));
		json_add_bool(req->js, "reservedok", false);
	} else {
		plugin_log(mfc->cmd->plugin, LOG_DBG,
			   "mfc %"PRIu64": fundpsbt.",
			   mfc->id);

		req = jsonrpc_request_start(mfc->cmd->plugin,
					    mfc->cmd,
					    "fundpsbt",
					    &after_fundpsbt,
					    &mfc_forward_error,
					    mfc);
		json_add_u32(req->js, "minconf", mfc->minconf);
	}

	/* The entire point is to reserve the inputs. */
	/*  BOLT #2:
	 * The sender:
	 *...
	 *     - SHOULD ensure the funding transaction confirms in the next 2016
	 *       blocks.
	 */
	json_add_u32(req->js, "reserve", 2016);
	/* How much do we need to reserve?  */
	if (has_all(mfc))
		json_add_string(req->js, "satoshi", "all");
	else {
		struct amount_sat sum = AMOUNT_SAT(0);
		for (size_t i = 0; i < tal_count(mfc->destinations); ++i) {
			struct amount_sat requested
				= mfc->destinations[i].request_amt;

			if (!amount_sat_add(&sum,
					    sum, mfc->destinations[i].amount))
				return mfc_fail(mfc, JSONRPC2_INVALID_PARAMS,
						"Overflow while summing "
						"destination values.");
			/* Also add in any fees for requested amt! */