import { State } from '../../helper/state';
/**
 * The ObfsState class identifies the obfuscation method
 */
export declare class ObfsState extends State {
    private obfsMethods;
    parse(): void;
    reply(): void;
}
/**
 * The IdentifierState class identifies the version of the
 * protocol from the received data and changes the state properly
 */
export declare class IdentifierState extends State {
    /**
     * We identify the protocol version from the first byte
     */
    private firstByte?;
    /**
     * Parse request
     * @returns void
     */
    parse(): void;
    /**
     * Parse request and changes the state properly
     * @returns void
     */
    reply(): void;
}
/**
 * The MethodSelectionState negotiates
 * with the client about the proper authentication method
 * specific for socks5
 * @remarks
 * References: {@link https://www.rfc-editor.org/rfc/rfc1928#section-3}
 */
export declare class MethodSelectionState extends State {
    /**
     * users' suggested authentication methods
     */
    private methods;
    /**
     * Parse request and extracts user suggested authentication methods
     * @returns void
     */
    parse(): void;
    /**
     * Continues to authenticate procedure with authenticator class
     * @returns void
     */
    reply(): void;
}
/**
 * The RequestState class is responsible to handle
 * the request for socks5 (connect | associate | bind)
 * @remarks
 * References: {@link https://www.rfc-editor.org/rfc/rfc1928#section-4}
 */
export declare class RequestState extends State {
    /**
     * Parse request
     * @returns  void
     */
    parse(): void;
    /**
     * Executes proper request handler function and,
     * remove all data listeners of contexts socket
     * @returns void
     */
    reply(): void;
}