string(243) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%9C%BA%E9%A1%B6%E7%9B%92hdr%E5%8A%9F%E8%83%BD%E6%9C%89%E7%94%A8%E5%90%97 => Failed to connect to 101.89.117.144 port 38056: Connection refused"
机顶盒hdr功能有用吗
