---
title: versionKey
framework: foundation
role: symbol
role_heading: Type Property
path: foundation/streamsocksproxyconfiguration/versionkey
---

# versionKey

Value is either NSStreamSOCKSProxyVersion4 or NSStreamSOCKSProxyVersion5.

## Declaration

```swift
static let versionKey: StreamSOCKSProxyConfiguration
```

## Discussion

Discussion If this key is not present, NSStreamSOCKSProxyVersion5 is used by default.

## See Also

### Type Properties

- [hostKey](foundation/streamsocksproxyconfiguration/hostkey.md)
- [passwordKey](foundation/streamsocksproxyconfiguration/passwordkey.md)
- [portKey](foundation/streamsocksproxyconfiguration/portkey.md)
- [userKey](foundation/streamsocksproxyconfiguration/userkey.md)