---
title: CFStreamErrorDomain.POSIX
framework: corefoundation
role: symbol
role_heading: Case
path: corefoundation/cfstreamerrordomain/posix
---

# CFStreamErrorDomain.POSIX

The error code is an error code defined in errno.h.

## Declaration

```swift
case POSIX
```

## See Also

### Constants

- [CFStreamErrorDomain.custom](corefoundation/cfstreamerrordomain/custom.md)
- [CFStreamErrorDomain.macOSStatus](corefoundation/cfstreamerrordomain/macosstatus.md)