# DNSServiceDomainEnumReply Callback for handling the results of a previous call to [`DNSServiceEnumerateDomains(_:_:_:_:_:)`](/documentation/dnssd/DNSServiceEnumerateDomains(_:_:_:_:_:)). ``` typealias DNSServiceDomainEnumReply = (DNSServiceRef?, DNSServiceFlags, UInt32, DNSServiceErrorType, UnsafePointer?, UnsafeMutableRawPointer?) -> Void ``` ## Parameters `sdRef` The DNSServiceRef initialized by [`DNSServiceEnumerateDomains(_:_:_:_:_:)`](/documentation/dnssd/DNSServiceEnumerateDomains(_:_:_:_:_:)). `flags` Possible values are: [`kDNSServiceFlagsMoreComing`](/documentation/dnssd/kDNSServiceFlagsMoreComing) kDNSServiceFlagsAdd kDNSServiceFlagsDefault `interfaceIndex` Specifies the interface on which the domain exists. (The index for a given interface is determined via the if_nametoindex() family of calls.) `errorCode` Will be [`kDNSServiceErr_NoError`](/documentation/dnssd/kDNSServiceErr_NoError) (0) on success, otherwise indicates the failure that occurred (other parameters are undefined if errorCode is nonzero). `replyDomain` The name of the domain. `context` The context pointer passed to DNSServiceEnumerateDomains. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)