---
title: kCFStreamSocketSOCKSVersion4
framework: corefoundation
role: symbol
role_heading: Global Variable
path: corefoundation/kcfstreamsocketsocksversion4
---

# kCFStreamSocketSOCKSVersion4

Constant used in the kCFStreamSockerSOCKSVersion key to specify SOCKS4 as the SOCKS version for the stream.

## Declaration

```swift
let kCFStreamSocketSOCKSVersion4: CFString
```

## See Also

### Constants

- [kCFStreamPropertySOCKSProxyHost](corefoundation/kcfstreampropertysocksproxyhost.md)
- [kCFStreamPropertySOCKSProxyPort](corefoundation/kcfstreampropertysocksproxyport.md)
- [kCFStreamPropertySOCKSVersion](corefoundation/kcfstreampropertysocksversion.md)
- [kCFStreamSocketSOCKSVersion5](corefoundation/kcfstreamsocketsocksversion5.md)
- [kCFStreamPropertySOCKSUser](corefoundation/kcfstreampropertysocksuser.md)
- [kCFStreamPropertySOCKSPassword](corefoundation/kcfstreampropertysockspassword.md)