string(248) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%8E%A8%E5%B9%BF%E5%92%8C%E4%BC%A0%E6%92%AD%E6%98%AF%E4%B8%8D%E6%98%AF%E4%B8%80%E5%9B%9E%E4%BA%8B => Received HTTP code 403 from proxy after CONNECT"
推广和传播是不是一回事
