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# Miscellaneous Defines

## Topics

### Constants

[_DNS_SD_H](/documentation/dnssd/dns_sd_h)

API version number.

[`var kDNSServiceMaxDomainName: Int32`](/documentation/dnssd/kDNSServiceMaxDomainName)

[`var kDNSServiceMaxServiceName: Int32`](/documentation/dnssd/kDNSServiceMaxServiceName)

[`var kDNSServiceProperty_DaemonVersion: String`](/documentation/dnssd/kDNSServiceProperty_DaemonVersion)

The daemon version property.


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