code: function Transport (opts) {
    this.path = opts.path;
    this.host = opts.host;
    this.port = opts.port;
    this.secure = opts.secure;
    this.query = opts.query;
    this.timestampParam = opts.timestampParam;
    this.timestampRequests = opts.timestampRequests;
    this.readyState = '';
  }
docs: Transport abstract constructor.
  
  @param {Object} options.
  @api private