---
title: protocolVersions
framework: avfoundation
role: symbol
role_heading: Type Property
path: avfoundation/avcontentkeysessionserverplaybackcontextoption/protocolversions
---

# protocolVersions

Specifies the versions of the content protection protocols supported by the application.

## Declaration

```swift
static let protocolVersions: AVContentKeySessionServerPlaybackContextOption
```

## Discussion

Discussion If you don’t specify a value for this key, the system assumes a default protocol version of 1.

## See Also

### Server playback context options

- [serverChallenge](avfoundation/avcontentkeysessionserverplaybackcontextoption/serverchallenge.md)