Method setSocket

lib/websocket.js:213–259

* Set up the socket and the internal resources. * * @param {Duplex} socket The network socket between the server and client * @param {Buffer} head The first packet of the upgraded stream * @param {Object} options Options object * @param {Boolean} [options.allowSynchronousEvents=false]

(socket, head, options)

   * @private
   */
  setSocket(socket, head, options) {
    const receiver = new Receiver({
      allowSynchronousEvents: options.allowSynchronousEvents,
      binaryType: this.binaryType,
      extensions: this._extensions,
      isServer: this._isServer,
      maxBufferedChunks: options.maxBufferedChunks,
      maxFragments: options.maxFragments,
      maxPayload: options.maxPayload,
      skipUTF8Validation: options.skipUTF8Validation
    });

    const sender = new Sender(socket, this._extensions, options.generateMask);

    this._receiver = receiver;
    this._sender = sender;
    this._socket = socket;

    receiver[kWebSocket] = this;
    sender[kWebSocket] = this;
    socket[kWebSocket] = this;

    receiver.on('conclude', receiverOnConclude);
    receiver.on('drain', receiverOnDrain);
    receiver.on('error', receiverOnError);
    receiver.on('message', receiverOnMessage);
    receiver.on('ping', receiverOnPing);
    receiver.on('pong', receiverOnPong);

    sender.onerror = senderOnError;

    //
    // These methods may not be available if `socket` is just a `Duplex`.
    //
    if (socket.setTimeout) socket.setTimeout(0);
    if (socket.setNoDelay) socket.setNoDelay();

    if (head.length > 0) socket.unshift(head);

    socket.on('close', socketOnClose);
    socket.on('data', socketOnData);
    socket.on('end', socketOnEnd);
    socket.on('error', socketOnError);

    this._readyState = WebSocket.OPEN;
    this.emit('open');
  }

  /**
   * Emit the `'close'` event.