import { Buffer } from 'buffer';
import { Socket } from 'net';
export declare abstract class TcpSocket {
    readonly socket: Socket;
    private isClosed;
    get netSocket(): Socket;
    constructor(socket: Socket);
    connect(port: number, host: string): this;
    on(event: string, callback: (err?: any) => void): this;
    once(event: string, callback: (err?: any) => void): this;
    end(): this;
    sendMessage(message: any, callback?: (err?: any) => void): void;
    protected abstract handleSend(message: any, callback?: (err?: any) => void): any;
    private onData;
    /**
     * Surfaces a framing error on the underlying socket and closes it.
     * Pass "destroy" for a peer that cannot be trusted to answer a FIN.
     */
    protected handleDataError(e: any, { destroy }?: {
        destroy?: boolean | undefined;
    }): void;
    protected abstract handleData(data: Buffer | string): any;
    protected emitMessage(data: string): void;
}