declare abstract class MessageInterface {
    /**
     * 获取 HTTP 协议版本，如：'1.1', '1.0'
     * @returns
     */
    getProtocolVersion(): string;
    /**
     * 设置 HTTP 协议版本
     * @param version
     * @returns
     */
    withProtocolVersion(version: string): this;
    /**
     * 获取所有headers
     * @returns
     */
    getHeaders(): Record<string, any>;
    /**
     * 判断header是否存在
     * @param name
     * @returns
     */
    hasHeader(name: string): boolean;
    /**
     * 获取header
     * @param name
     * @returns
     */
    getHeader(name: string): any;
    /**
     * 获取header，逗号分隔同名header
     * @param name
     * @returns
     */
    getHeaderLine(name: string): string;
    /**
     * 设置header值
     * @param name
     * @param value
     * @returns
     */
    withHeader(name: string, value: string | string[]): this;
    /**
     * 附加header值
     * @param name
     * @param value
     * @returns
     */
    withAddedHeader(name: string, value: string | string[]): this;
    /**
     * 删除header
     * @param name
     * @returns
     */
    withoutHeader(name: string): this;
    /**
     * 获取body内容
     * @returns
     */
    getBody(): Buffer;
    /**
     * 设置body内容
     * @param body
     * @returns
     */
    withBody(body: any): this;
}
export = MessageInterface;