分享链接 https://emacsist.github.io/2015/12/29/Http-%E5%8D%8F%E8%AE%AE%E4%B8%AD%E7%9A%84Range%E8%AF%B7%E6%B1%82%E5%A4%B4%E4%BE%8B%E5%AD%90/
`单行代码`
