Method close

lib/index.ts:744–763

* Closes server connection * * @param [fn] optional, called as `fn([err])` on error OR all conns closed

(fn?: (err?: Error) => void)

   * @param [fn] optional, called as `fn([err])` on error OR all conns closed
   */
  public close(fn?: (err?: Error) => void): void {
    this._nsps.forEach((nsp) => {
      nsp.sockets.forEach((socket) => {
        socket._onclose("server shutting down");
      });

      nsp.adapter.close();
    });

    this.engine.close();

    // restore the Adapter prototype, when the Socket.IO server was attached to a uWebSockets.js server
    restoreAdapter();

    if (this.httpServer) {
      this.httpServer.close(fn);
    } else {
      fn && fn();
    }
  }

  /**
   * Registers a middleware, which is a function that gets executed for every incoming {@link Socket}.