/// <reference types="node" />
import ObfsMethod from './obfs'
import Connection from '../helper/connection'
/**
 * The WebSocket class is an obfuscation method based on the
 * WebSocket protocol.
 */
declare class WebSocket extends ObfsMethod {
  path: string
  name: string
  encryption: string
  compression: string
  handshakeFlag: boolean
  hostName: string | undefined
  constructor(
    connection: Connection,
    path: string | undefined,
    hostName: string | undefined,
    compression?: string,
    encryption?: string
  )
  /**
   * Checks if the incoming message matches the expected WebSocket format.
   * @param message - The incoming message.
   * @returns Whether the message matches the WebSocket format.
   */
  check(message: Buffer): boolean
  private generateWebSocketKey
  /**
   * Initiates the WebSocket handshake for the CLIENT.
   * For SERVER type, waits for client handshake and responds accordingly.
   * @param callback - A callback to invoke after the handshake.
   */
  handshake(callback?: () => void): void
  /**
   * DeObfuscates a WebSocket message.
   * @param message - The obfuscated WebSocket message.
   * @returns The de-obfuscated message payload.
   */
  deObfuscate(message: Buffer): Buffer
  /**
   * Obfuscates a message by framing it as a WebSocket message.
   * @param message - The non-obfuscated message.
   * @returns The obfuscated WebSocket message.
   */
  obfuscate(message: Buffer): Buffer
}
/**
 * Builds a WebSocket obfuscation method object.
 * @param path - Endpoint path.
 * @param compression - Compression method.
 * @param encryption - Encryption algorithm.
 */
export declare const websocket: (
  path?: string,
  hostName?: string | undefined,
  compression?: string,
  encryption?: string
) => (connection: Connection) => WebSocket
export {}