Function start_mw

plugins/spender/multiwithdraw.c:331–389

		  struct multiwithdraw_command *mw);

static struct command_result *start_mw(struct multiwithdraw_command *mw)
{
	size_t startweight;
	struct out_req *req;

	plugin_log(mw->cmd->plugin, LOG_DBG,
		   "multiwithdraw %"PRIu64": start.",
		   mw->id);

	startweight = bitcoin_tx_core_weight(1, tal_count(mw->outputs));
	for (size_t i = 0; i < tal_count(mw->outputs); ++i) {
		struct multiwithdraw_destination *dest;
		dest = &mw->outputs[i];
		startweight += bitcoin_tx_output_weight(
					tal_count(dest->script));
	}

	if (mw->utxos) {
		plugin_log(mw->cmd->plugin, LOG_DBG,
			   "multiwithdraw %"PRIu64": utxopsbt.",
			   mw->id);
		req = jsonrpc_request_start(mw->cmd->plugin,
					    mw->cmd,
					    "utxopsbt",
					    &mw_after_fundpsbt,
					    &mw_forward_error,
					    mw);
		json_add_bool(req->js, "reservedok", false);
		json_add_jsonstr(req->js, "utxos", mw->utxos, strlen(mw->utxos));
	} else {
		plugin_log(mw->cmd->plugin, LOG_DBG,
			   "multiwithdraw %"PRIu64": fundpsbt.",
			   mw->id);
		req = jsonrpc_request_start(mw->cmd->plugin,
					    mw->cmd,
					    "fundpsbt",
					    &mw_after_fundpsbt,
					    &mw_forward_error,
					    mw);
		json_add_u32(req->js, "minconf", *mw->minconf);
	}
	if (mw->has_all)
		json_add_string(req->js, "satoshi", "all");
	else {
		struct amount_sat sum = AMOUNT_SAT(0);
		for (size_t i = 0; i < tal_count(mw->outputs); ++i)
			if (!amount_sat_add(&sum, sum, mw->outputs[i].amount))
				return mw_fail(mw,
					       FUND_CANNOT_AFFORD,
					       "Overflow in amount sum.");
		json_add_string(req->js, "satoshi",
				type_to_string(tmpctx, struct amount_sat,
					       &sum));
	}
	json_add_string(req->js, "feerate", mw->feerate);
	json_add_u64(req->js, "startweight", startweight);

	return send_outreq(mw->cmd->plugin, req);