/// <reference types="node" />
/// <reference types="node" />
import { Socket } from "net";
import type { ENIPEventEmitter } from "./events";
import type { ENIPState } from "./states";
/**
 * Low Level Ethernet/IP
 */
export declare class SocketController {
    state: ENIPState;
    socket: Socket;
    events: ENIPEventEmitter;
    port: number;
    constructor(timeout?: number, port?: number);
    /**
     * Initializes Session with Desired IP Address or FQDN
     * and Returns a Promise with the Established Session ID
     * @param IpAddress IP Address or FQDN of the Controller
     * @param timeout Timeout in Milliseconds for Session Registration
     */
    connect(IpAddress: string, timeout?: number): Promise<number | undefined>;
    /**
     * Writes Ethernet/IP Data to Socket as an Unconnected Message or a Transport Class 1 Datagram
     * @param data Data to be sent
     * @param connected If the message should be sent as a connected message
     * @param timeout Timeout in Milliseconds for the response
     */
    write(data: Buffer, connected?: boolean, timeout?: number): Promise<boolean>;
    /**
     * Sends Unregister Session Command and Destroys Underlying TCP Socket
     * @deprecated
     */
    destroy(_error?: Error): void;
    /**
     * Sends an UnregisterSession command
     */
    close(): void;
    /**
     * Socket data event handler
     * @param data Data received from the socket
     */
    private handleData;
    /**
     * Handle socket close
     * @param _hadError If the socket closed due to an error
     */
    private handleClose;
}