string(279) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=inux%E4%BB%8E%E4%B8%80%E5%8F%B0%E4%B8%BB%E6%9C%BA%E6%8B%B7%E8%B4%9D%E4%B8%9C%E8%A5%BF%E5%88%B0%E5%8F%A6%E5%A4%96%E4%B8%80%E5%8F%B0 => Received HTTP code 403 from proxy after CONNECT"
inux从一台主机拷贝东西到另外一台
