string(238) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=dr10%E5%92%8Csdr%E8%A7%86%E9%A2%91%E7%94%BB%E8%B4%A8%E5%B7%AE%E8%B7%9D => Failed to connect to 101.89.143.195 port 38109: Connection refused"
dr10和sdr视频画质差距
