string(314) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%AE%B6%E9%87%8C%E7%9A%84wifi%E7%BD%91%E9%80%9F%E7%89%B9%E5%88%AB%E6%85%A2%E6%98%AF%E4%BB%80%E4%B9%88%E5%8E%9F%E5%9B%A0%E9%80%A0%E6%88%90%E7%9A%84 => Failed to connect to 61.171.74.35 port 38041: Connection refused"
家里的wifi网速特别慢是什么原因造成的
