import type { Request } from 'express';
/**
 * getHostFullUrl 只读取 protocol/originalUrl/headers.host/get；
 * 用最小结构类型兼容真实 express Request 与测试用的 duck-typed mock
 */
type HostUrlRequest = {
    protocol: string;
    originalUrl: string;
    headers?: {
        host?: string | undefined;
    };
    get(name: string): string | undefined;
};
export declare const getHostFullUrl: (req: HostUrlRequest, url?: string) => string;
export declare const getHostIp: () => string;
export declare const getHostPort: (req: Request) => number | string;
export declare const getClientIp: (req: Request) => string | undefined;
export {};