Function estimatefees

plugins/bcli.c:596–632

Get the current feerates. We use an urgent feerate for unilateral_close and max, * a slightly less urgent feerate for htlc_resolution and penalty transactions, * a slow feerate for min, and a normal one for all others. */

 * a slow feerate for min, and a normal one for all others.
 */
static struct command_result *estimatefees(struct command *cmd,
					   const char *buf UNUSED,
					   const jsmntok_t *toks UNUSED)
{
	struct command_result *err;
	u64 perkb_floor = 0;
	u64 perkb[ARRAY_SIZE(estimatefee_params)];
	struct json_stream *response;

	if (!param(cmd, buf, toks, NULL))
		return command_param_failed();

	err = get_feerate_floor(cmd, &perkb_floor);
	if (err)
		return err;

	for (size_t i = 0; i < ARRAY_SIZE(estimatefee_params); i++) {
		err = get_feerate(cmd, estimatefee_params[i].blocks,
				  estimatefee_params[i].style, &perkb[i]);
		if (err)
			return err;
	}

	response = jsonrpc_stream_success(cmd);
	json_array_start(response, "feerates");
	for (size_t i = 0; i < ARRAY_SIZE(perkb); i++) {
		if (!perkb[i])
			continue;
		json_object_start(response, NULL);
		json_add_u32(response, "blocks", estimatefee_params[i].blocks);
		json_add_feerate(response, "feerate", cmd, perkb_floor, perkb[i]);
		json_object_end(response);
	}
	json_array_end(response);
	json_add_u64(response, "feerate_floor", perkb_floor);
	return command_finished(cmd, response);
}

/* Send a transaction to the Bitcoin network.
 * Calls `sendrawtransaction` using the first parameter as the raw tx.