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实现方式

iOS 端的屏幕共享是通过在 Extension 中使用 iOS 原生的 ReplayKit 框架实现录制屏幕，然后将屏幕共享流作为一个用户加入频道实现的。由于 Apple 不支持 Extension 进程与主 app 进程通信，因此你需要为屏幕共享流单独创建一个进程。</description>
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