---
title: CFStreamPropertyKey
framework: corefoundation
role: symbol
role_heading: Structure
path: corefoundation/cfstreampropertykey
---

# CFStreamPropertyKey

## Declaration

```swift
struct CFStreamPropertyKey
```

## Topics

### Type Properties

- [appendToFile](corefoundation/cfstreampropertykey/appendtofile.md)
- [dataWritten](corefoundation/cfstreampropertykey/datawritten.md)
- [fileCurrentOffset](corefoundation/cfstreampropertykey/filecurrentoffset.md)
- [socketNativeHandle](corefoundation/cfstreampropertykey/socketnativehandle.md)
- [socketRemoteHostName](corefoundation/cfstreampropertykey/socketremotehostname.md)
- [socketRemotePortNumber](corefoundation/cfstreampropertykey/socketremoteportnumber.md)

### Initializers

- [init(_:)](corefoundation/cfstreampropertykey/init(_:).md)
- [init(rawValue:)](corefoundation/cfstreampropertykey/init(rawvalue:).md)

## Relationships

### Conforms To

- [Equatable](swift/equatable.md)
- [Hashable](swift/hashable.md)
- [RawRepresentable](swift/rawrepresentable.md)
- [Sendable](swift/sendable.md)
- [SendableMetatype](swift/sendablemetatype.md)

## See Also

### Data Types

- [CFAllocatorTypeID](corefoundation/cfallocatortypeid.md)
- [CFCalendarIdentifier](corefoundation/cfcalendaridentifier.md)
- [CFDateFormatterKey](corefoundation/cfdateformatterkey.md)
- [CFErrorDomain](corefoundation/cferrordomain.md)
- [CFLocaleIdentifier](corefoundation/cflocaleidentifier.md)
- [CFLocaleKey](corefoundation/cflocalekey.md)
- [CFNotificationName](corefoundation/cfnotificationname.md)
- [CFNumberFormatterKey](corefoundation/cfnumberformatterkey.md)
- [CFRunLoopMode](corefoundation/cfrunloopmode.md)
- [CFTypeRef](corefoundation/cftyperef.md)