string(257) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=b%E7%AB%99%E4%BC%A0%E8%A7%86%E9%A2%91%E4%B8%BA%E4%BB%80%E4%B9%88%E8%BF%99%E4%B9%88%E6%85%A2 => Failed to connect to 61.171.74.35 port 38027: Connection refused"
b站传视频为什么这么慢
