import { EventEmitter } from 'node:events';
import { Socket } from './socket.js';
export interface ListenOptions {
    port?: number;
    host?: string;
    backlog?: number;
    exclusive?: boolean;
}
export declare class Server extends EventEmitter {
    listening: boolean;
    maxConnections?: number;
    allowHalfOpen: boolean;
    private _service;
    private _connections;
    private _address;
    constructor(connectionListener?: (socket: Socket) => void);
    constructor(options?: {
        allowHalfOpen?: boolean;
    }, connectionListener?: (socket: Socket) => void);
    /**
     * Start listening for connections.
     */
    listen(port?: number, host?: string, backlog?: number, callback?: () => void): this;
    listen(port?: number, host?: string, callback?: () => void): this;
    listen(port?: number, callback?: () => void): this;
    listen(options?: ListenOptions, callback?: () => void): this;
    private _handleConnection;
    /** Get the address the server is listening on. */
    address(): {
        port: number;
        family: string;
        address: string;
    } | null;
    /** Close the server, stop accepting new connections. */
    close(callback?: (err?: Error) => void): this;
    /** Get the number of concurrent connections. */
    getConnections(callback: (err: Error | null, count: number) => void): void;
    ref(): this;
    unref(): this;
}