string(251) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%B8%B8%E6%88%8Fping%E5%80%BC%E6%98%AF%E8%B4%9F%E6%95%B0%E7%9A%84%E5%8E%9F%E5%9B%A0 => Failed to connect to 14.18.117.71 port 38133: Connection refused"
游戏ping值是负数的原因
