因为我看到这个描述
Creating an App Proxy Provider Extension
App Proxy Providers run as App Extensions for the com.apple.networkextension.app-proxy extension point.
To create a App Proxy Provider extension, first create a new App Extension target in your project.
另外,实现handleNewFlow()方法另外应该还要请求苹果权限的吧。
新手按自己的理解可能有偏颇,望回复。