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# resourceLoader(_:didCancel:)

Informs the delegate that a prior loading request has been cancelled.

```
optional func resourceLoader(_ resourceLoader: AVAssetResourceLoader, didCancel loadingRequest: AVAssetResourceLoadingRequest)
```

## Parameters

`resourceLoader`

The resource loader.

`loadingRequest`

The loading request that has been cancelled.

## Discussion

Previously issued loading requests can be cancelled when data from the resource is no longer required or when a loading request is superseded by new requests for data from the same resource.

For example, if to complete a seek operation it becomes necessary to load a range of bytes that’s different from a range previously requested, the prior request may be cancelled while the delegate is still handling it.

---

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