string(230) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%9F%AD%E8%B7%AF%E7%9A%84%E7%B1%BB%E5%9E%8B%E6%9C%89%E5%93%AA%E5%87%A0%E7%A7%8D => Received HTTP code 403 from proxy after CONNECT"
短路的类型有哪几种
