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# httpSessionIdentifier

A session identifier that the asset sends in HTTP requests that it makes.

```
var httpSessionIdentifier: UUID { get }
```

## Discussion

The asset uses this value to set as the `X-Playback-Session-Id` header of HTTP requests that it creates.

> Note:
> Copies of an ``doc://com.apple.avfoundation/documentation/AVFoundation/AVURLAsset`` have the same session identifier as the original asset.

---

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