string(268) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=inux%E5%B0%86%E6%96%87%E4%BB%B6%E4%BB%8E%E4%B8%80%E5%8F%B0%E6%9C%8D%E5%8A%A1%E5%99%A8%E4%BC%A0%E8%BE%93 => Failed to connect to 14.18.46.51 port 38044: Connection refused"
inux将文件从一台服务器传输
