string(274) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%8A%96%E9%9F%B3%E7%9B%B4%E6%92%AD%E9%97%B4%E6%8E%A8%E6%B5%81%E6%9C%BA%E5%88%B6%E6%B5%81%E7%A8%8B%E5%9B%BE => Failed to connect to 14.18.117.71 port 38220: Connection refused"
抖音直播间推流机制流程图
