/**
 * @license
 * Copyright Neekware Inc. All Rights Reserved.
 *
 * Use of this source code is governed by a proprietary notice
 * that can be found at http://neekware.com/license/PRI.html
 */
import { IpwareClientIpOrder, IpwareData, IpwareHeaders } from './ipware.model';
/**
 * Check the validity of an IPv4 address
 */
export declare function isValidIPv4(ip: string): boolean;
/**
 * Check the validity of an IPv6 address
 */
export declare function isValidIPv6(ip: string): boolean;
/**
 * Check the validity of an IP address
 */
export declare function isValidIP(ip: string): boolean;
/**
 * Given ip address string, it cleans it up
 */
export declare function cleanUpIP(ip: string): string;
/**
 * Given a string, it returns a list of one or more valid IP addresses
 * @param str - string to be parsed
 * @param order - client ip order (default is `left-most`)
 */
export declare function getIPsFromString(str: string, order?: IpwareClientIpOrder): IpwareData;
/**
 * Returns HTTP request headers attribute by key
 * @param headers HTTP request headers
 * @param key HTTP request header key
 */
export declare function getHeadersAttribute(headers: IpwareHeaders, attr: string): string;
/**
 * Returns ip address information from the request itself
 */
export declare function getIpFromRequest(request: any): string;