code: func (c *Client) Exec(r Request) (*Response, error) {
  	var err error
  
  	// Initialize connection if none available
  	if c.conn == nil {
  		c.conn, err = c.dialer.Dial(c.network, c.address)
  		if err != nil {
  			return nil, err
  		}
  
  		if r.keepAlive() {
  			switch c.network {
  			case "tcp":
  				c.conn.(*net.TCPConn).SetKeepAlive(true)
  			}
  		} else {
  			defer c.Close()
  		}
  	}
  
  	return r.handle(c.conn)
  }
docs: // Exec executes a given Livestatus query.