code: function Server(srv, opts){
    if (!(this instanceof Server)) return new Server(srv, opts);
    if ('object' == typeof srv && srv instanceof Object && !srv.listen) {
      opts = srv;
      srv = null;
    }
    opts = opts || {};
    this.nsps = {};
    this.parentNsps = new Map();
    this.path(opts.path || '/socket.io');
    this.serveClient(false !== opts.serveClient);
    this.parser = opts.parser || parser;
    this.encoder = new this.parser.Encoder();
    this.adapter(opts.adapter || Adapter);
    this.origins(opts.origins || '*:*');
    this.sockets = this.of('/');
    if (srv) this.attach(srv, opts);
  }
docs: Server constructor.
  
  @param {http.Server|Number|Object} srv http server, port or options
  @param {Object} [opts]
  @api public