string(244) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=100m%E5%AE%BD%E5%B8%A6%E7%AD%89%E4%BA%8E%E5%A4%9A%E5%B0%91%E5%B8%A6%E5%AE%BD => Failed to connect to 101.89.117.144 port 38022: Connection refused"
100m宽带等于多少带宽
