string(247) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%BB%8F%E5%85%B8%E7%9A%84%E4%BA%8B%E4%BB%B6%E8%90%A5%E9%94%80%E6%A1%88%E4%BE%8B => Failed to connect to 14.18.117.71 port 38069: Connection refused"
经典的事件营销案例
