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# AccessoryTransportSession.DataEvent

An enumeration of data events that the transport extension receives.

```
enum DataEvent
```

## Overview

The [`AccessoryTransportSession.EventHandler`](/documentation/AccessoryTransportExtension/AccessoryTransportSession/EventHandler) protocol’s [`dataEventHandler(event:)`](/documentation/AccessoryTransportExtension/AccessoryTransportSession/EventHandler/dataEventHandler(event:)) method receives events of this type.

---

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