public static int getActualPort(final String scheme, final Integer port) {
        Integer actualPort = port;
        if (Objects.isNull(port) || port < 0) {
            if (!"http".equals(scheme) && !"ws".equals(scheme)) {
                if ("https".equals(scheme) || "wss".equals(scheme)) {
                    actualPort = 443;
                }
            } else {
                actualPort = 80;
            }
        }
        return actualPort;
    }
get actual port.

@param scheme scheme eg:http
@param port   port
@return {@link int}
shenyu-common/src/main/java/org/apache/shenyu/common/utils/UriUtils.java