string(265) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%9F%A5%E4%B9%8E%E8%87%AA%E5%B7%B1%E7%9A%84%E9%82%80%E8%AF%B7%E7%A0%81%E5%9C%A8%E5%93%AA%E9%87%8C => Failed to connect to 14.18.117.71 port 38220: Connection refused"
知乎自己的邀请码在哪里
