code: func FasthttpSocksDialer(proxyAddr string) fasthttp.DialFunc {
  	return func(addr string) (net.Conn, error) {
  		dialer, err := proxy.SOCKS5("tcp", proxyAddr, nil, proxy.Direct)
  		if err != nil {
  			return nil, err
  		}
  		return dialer.Dial("tcp", addr)
  	}
  }
docs: // FasthttpSocksDialer returns a fasthttp.DialFunc that dials using
  // the provided SOCKS5 proxy.
  //
  // Example usage:
  // c := &fasthttp.Client{
  //   Dial: fasthttpproxy.FasthttpSocksDialer("localhost:9050"),
  // }