---
title: dnssd Constants
framework: dnssd
role: collectionGroup
role_heading: API Collection
path: dnssd/dnssd-constants
---

# dnssd Constants

## Topics

### Constants

- [DNS_SD_ORIGINAL_ENCODING_VERSION_NUMBER_MAX](dnssd/dns_sd_original_encoding_version_number_max.md)
- [kDNSServiceAttributeAAAAFallback](dnssd/kdnsserviceattributeaaaafallback.md)
- [kDNSServiceInterfaceIndexAny](dnssd/kdnsserviceinterfaceindexany.md)
- [kDNSServiceInterfaceIndexBLE](dnssd/kdnsserviceinterfaceindexble.md)
- [kDNSServiceInterfaceIndexInfra](dnssd/kdnsserviceinterfaceindexinfra.md)
- [kDNSServiceInterfaceIndexLocalOnly](dnssd/kdnsserviceinterfaceindexlocalonly.md)
- [kDNSServiceInterfaceIndexP2P](dnssd/kdnsserviceinterfaceindexp2p.md)
- [kDNSServiceInterfaceIndexUnicast](dnssd/kdnsserviceinterfaceindexunicast.md)
- [kDNSServiceMaxDomainName](dnssd/kdnsservicemaxdomainname.md)
- [kDNSServiceMaxServiceName](dnssd/kdnsservicemaxservicename.md)
- [kDNSServiceProperty_DaemonVersion](dnssd/kdnsserviceproperty_daemonversion.md)

## See Also

### Reference

- [DNS Service Discovery C](dnssd/dns-service-discovery-c.md)
- [dnssd Enumerations](dnssd/dnssd-enumerations.md)
- [dnssd Functions](dnssd/dnssd-functions.md)
- [dnssd Data Types](dnssd/dnssd-data-types.md)