string(233) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%AE%B6%E9%87%8Cwifi%E5%8F%98%E6%85%A2%E7%9A%84%E5%8E%9F%E5%9B%A0 => Failed to connect to 14.116.215.7 port 38230: Connection refused"
家里wifi变慢的原因
