---
title: CFStream Error Domain Constants (CFHost)
framework: corefoundation
role: collectionGroup
role_heading: API Collection
path: corefoundation/cfstream-error-domain-constants-cfhost
---

# CFStream Error Domain Constants (CFHost)

Defines constants for values returned in the domain field of the CFStreamError structure.

## Overview

Overview These constants indicate how the error code in the error field in the CFStreamError structure should be interpreted.

## Topics

### Constants

- [kCFStreamErrorDomainNetDB](cfnetwork/kcfstreamerrordomainnetdb.md)
- [kCFStreamErrorDomainNetServices](cfnetwork/kcfstreamerrordomainnetservices.md)
- [kCFStreamErrorDomainMach](cfnetwork/kcfstreamerrordomainmach.md)
- [kCFStreamErrorDomainFTP](cfnetwork/kcfstreamerrordomainftp.md)
- [kCFStreamErrorDomainHTTP](cfnetwork/kcfstreamerrordomainhttp.md)
- [kCFStreamErrorDomainSystemConfiguration](cfnetwork/kcfstreamerrordomainsystemconfiguration.md)
- [kCFStreamErrorDomainWinSock](cfnetwork/kcfstreamerrordomainwinsock.md)
- [kCFStreamErrorDomainSOCKS](corefoundation/kcfstreamerrordomainsocks.md)
- [kCFStreamErrorDomainSSL](corefoundation/kcfstreamerrordomainssl.md)

## See Also

### Constants

- [CFStreamStatus](corefoundation/cfstreamstatus.md)
- [CFStreamErrorDomain](corefoundation/cfstreamerrordomain.md)
- [Error Subdomains](corefoundation/error-subdomains.md)
- [Secure Sockets (SOCKS) Errors](cfnetwork/1518266-secure-sockets-socks-errors.md)
- [CFStreamEventType](corefoundation/cfstreameventtype.md)
- [Stream Properties](corefoundation/stream-properties.md)
- [CFStream Property SSL Settings Constants](corefoundation/cfstream-property-ssl-settings-constants.md)
- [CFStream Socket Security Level Constants](corefoundation/cfstream-socket-security-level-constants.md)
- [CFStream SOCKS Proxy Key Constants](corefoundation/cfstream-socks-proxy-key-constants.md)
- [Stream Service Types](corefoundation/stream-service-types.md)