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# CFNetServiceBrowserUnscheduleFromRunLoop(_:_:_:)

Unschedules a CFNetServiceBrowser from a run loop and mode.

```
func CFNetServiceBrowserUnscheduleFromRunLoop(_ browser: CFNetServiceBrowser, _ runLoop: CFRunLoop, _ runLoopMode: CFString)
```

## Parameters

`browser`

The CFNetServiceBrowser that is to be unscheduled; cannot be `NULL`.

`runLoop`

The run loop; cannot be `NULL`.

`runLoopMode`

The mode from which the browser is to be unscheduled; cannot be `NULL`.

## Discussion

Call this function to shut down a browser that is running asynchronously. To complete the shutdown, call [`CFNetServiceBrowserInvalidate(_:)`](/documentation/CFNetwork/CFNetServiceBrowserInvalidate(_:)) followed by [`CFNetServiceBrowserStopSearch(_:_:)`](/documentation/CFNetwork/CFNetServiceBrowserStopSearch(_:_:)).

### Special Considerations

This function is thread safe.

---

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