Method constructor

lib/websocket-server.js:66–142

* Create a `WebSocketServer` instance. * * @param {Object} options Configuration options * @param {Boolean} [options.allowSynchronousEvents=true] Specifies whether * any of the `'message'`, `'ping'`, and `'pong'` events can be emitted * multiple times in the same tick * @pa

(options, callback)

   * @param {Function} [callback] A listener for the `listening` event
   */
  constructor(options, callback) {
    super();

    options = {
      allowSynchronousEvents: true,
      autoPong: true,
      maxBufferedChunks: 1024 * 1024,
      maxFragments: 128 * 1024,
      maxPayload: 100 * 1024 * 1024,
      skipUTF8Validation: false,
      perMessageDeflate: false,
      handleProtocols: null,
      clientTracking: true,
      closeTimeout: CLOSE_TIMEOUT,
      verifyClient: null,
      noServer: false,
      backlog: null, // use default (511 as implemented in net.js)
      server: null,
      host: null,
      path: null,
      port: null,
      WebSocket,
      ...options
    };

    if (
      (options.port == null && !options.server && !options.noServer) ||
      (options.port != null && (options.server || options.noServer)) ||
      (options.server && options.noServer)
    ) {
      throw new TypeError(
        'One and only one of the "port", "server", or "noServer" options ' +
          'must be specified'
      );
    }

    if (options.port != null) {
      this._server = http.createServer((req, res) => {
        const body = http.STATUS_CODES[426];

        res.writeHead(426, {
          'Content-Length': body.length,
          'Content-Type': 'text/plain'
        });
        res.end(body);
      });
      this._server.listen(
        options.port,
        options.host,
        options.backlog,
        callback
      );
    } else if (options.server) {
      this._server = options.server;
    }

    if (this._server) {
      const emitConnection = this.emit.bind(this, 'connection');