---
title: NSURLRequest.NetworkServiceType.background
framework: foundation
role: symbol
role_heading: Case
path: foundation/nsurlrequest/networkservicetype-swift.enum/background
---

# NSURLRequest.NetworkServiceType.background

A service type for high-delay tolerant, high-loss tolerant, elastic flow, and variable size connections.

## Declaration

```swift
case background
```

## Discussion

Discussion An example of this service type is prefetching content so that it’s available when the user chooses to view it.

## See Also

### Network service types

- [NSURLRequest.NetworkServiceType.default](foundation/nsurlrequest/networkservicetype-swift.enum/default.md)
- [NSURLRequest.NetworkServiceType.video](foundation/nsurlrequest/networkservicetype-swift.enum/video.md)
- [NSURLRequest.NetworkServiceType.voice](foundation/nsurlrequest/networkservicetype-swift.enum/voice.md)
- [NSURLRequest.NetworkServiceType.callSignaling](foundation/nsurlrequest/networkservicetype-swift.enum/callsignaling.md)
- [NSURLRequest.NetworkServiceType.responsiveData](foundation/nsurlrequest/networkservicetype-swift.enum/responsivedata.md)
- [NSURLRequest.NetworkServiceType.avStreaming](foundation/nsurlrequest/networkservicetype-swift.enum/avstreaming.md)
- [NSURLRequest.NetworkServiceType.responsiveAV](foundation/nsurlrequest/networkservicetype-swift.enum/responsiveav.md)
- [NSURLRequest.NetworkServiceType.voip](foundation/nsurlrequest/networkservicetype-swift.enum/voip.md)