递归导致奔溃

[smallgirl]

could not execute support code to read Objective-C class data in the process. This may reduce the quality of type information available.

如果恢复下载，已经下载的ts文件超过300个，第300次进入downloadNextFile 会崩溃， 参考文章https://opensource.sensorsdata.cn/opensource/%e4%b8%80%e4%b8%aa%e9%80%92%e5%bd%92%e8%b0%83%e7%94%a8%e5%bc%95%e5%8f%91%e7%9a%84-%e8%a1%80%e6%a1%88-2/