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mdns

package module

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Versions in this module

v1

v1.3.0

Jul 16, 2026

Changes in this version

+ func CheckMulticastRoute() error

type Config

+ WarningFunc WarningFunc

type MulticastConn

+ func (mc *MulticastConn) SetWarningFunc(fn WarningFunc)

+ type Warning struct

+ Code string

+ Hint string

+ Message string

+ type WarningFunc func(Warning)

v1.2.1

Jun 26, 2026

v1.2.0

Jun 26, 2026

v1.1.1

Jun 26, 2026

v1.1.0

Jun 26, 2026

v1.0.0

Jun 23, 2026

Changes in this version

+ const ClassAny

+ const ClassIN

+ const ClassNone

+ const DefaultAnnounceTTL

+ const DefaultDomain

+ const DefaultHostTTL

+ const DefaultOtherTTL

+ const DefaultPort

+ const DefaultProbeCount

+ const DefaultProbeWait

+ const EventAdd

+ const EventRemove

+ const PacketBufferSize

+ const TypeA

+ const TypeAAAA

+ const TypeAny

+ const TypeCNAME

+ const TypeNS

+ const TypeNSEC

+ const TypeOPT

+ const TypePTR

+ const TypeSOA

+ const TypeSRV

+ const TypeTXT

+ var ErrInvalidPointer = errors.New("mdns: invalid compression pointer")

+ var ErrLabelTooLong = errors.New("mdns: label too long (>63 bytes)")

+ var ErrNameTooLong = errors.New("mdns: domain name too long (>255 bytes)")

+ var ErrPointerLoop = errors.New("mdns: compression pointer loop detected")

+ var ErrTruncatedName = errors.New("mdns: domain name is truncated")

+ var IPv4MulticastAddr = net.IPv4(224, 0, 0, 251)

+ var IPv6MulticastAddr = net.ParseIP("ff02::fb")

+ func LookupHost(ctx context.Context, host string, port int) ([]net.IP, error)

+ func RRType(t uint16) string

+ type Browser struct

+ func (b *Browser) Instances() []*ServiceInstanceInfo

+ func (b *Browser) Start() (<-chan ServiceEvent, error)

+ func (b *Browser) Stop()

+ type Cache struct

+ func NewCache() *Cache

+ func (c *Cache) AllRecords() []*ResourceRecord

+ func (c *Cache) Expire() int

+ func (c *Cache) HasValidRecord(key CacheKey) bool

+ func (c *Cache) KnownAnswers(name string, rrType uint16) []*ResourceRecord

+ func (c *Cache) Lookup(key CacheKey) []*ResourceRecord

+ func (c *Cache) LookupName(name string) []*ResourceRecord

+ func (c *Cache) RecordOriginalTTL(key CacheKey) uint32

+ func (c *Cache) RecordRemainingTTL(key CacheKey) uint32

+ func (c *Cache) Remove(key CacheKey)

+ func (c *Cache) RemoveName(name string)

+ func (c *Cache) Upsert(rr *ResourceRecord, from net.IP) bool

+ type CacheKey struct

+ Name string

+ Type uint16

+ type Config struct

+ Domain string

+ EnableIPv6 bool

+ HostName string

+ Interfaces []string

+ LogFunc func(format string, args ...any)

+ Port int

+ func DefaultConfig() Config

+ type Header struct

+ ANCount uint16

+ ARCount uint16

+ Flags uint16

+ ID uint16

+ NSCount uint16

+ QDCount uint16

+ type Message struct

+ Additionals []*ResourceRecord

+ Answers []*ResourceRecord

+ Authorities []*ResourceRecord

+ Questions []*Question

+ func UnpackMessage(data []byte) (*Message, error)

+ func (m *Message) IsProbe() bool

+ func (m *Message) IsQuery() bool

+ func (m *Message) IsResponse() bool

+ func (m *Message) IsTruncated() bool

+ func (m *Message) IsValidmDNS() bool

+ func (m *Message) Opcode() uint16

+ func (m *Message) Pack() ([]byte, error)

+ func (m *Message) RCode() uint16

+ type MulticastConn struct

+ func NewMulticastConn(port int, enableIPv6 bool) (*MulticastConn, error)

+ func (mc *MulticastConn) Close() error

+ func (mc *MulticastConn) Packets() <-chan ReceivedPacket

+ func (mc *MulticastConn) Port() int

+ func (mc *MulticastConn) WriteMulticast(data []byte) error

+ func (mc *MulticastConn) WriteMulticastV4(data []byte) (int, error)

+ func (mc *MulticastConn) WriteMulticastV6(data []byte) (int, error)

+ func (mc *MulticastConn) WriteTo(data []byte, addr *net.UDPAddr) (int, error)

+ type Question struct

+ Class uint16

+ Name string

+ Type uint16

+ type ReceivedPacket struct

+ Data []byte

+ From *net.UDPAddr

+ type ResourceRecord struct

+ CacheFlush bool

+ Class uint16

+ IP net.IP

+ Name string

+ NextDomain string

+ Port uint16

+ Priority uint16

+ RawData []byte

+ TTL uint32

+ Target string

+ Text []string

+ Type uint16

+ TypeBitMaps []uint16

+ Weight uint16

+ func (rr *ResourceRecord) String() string

+ type Server struct

+ func NewServer(config Config) (*Server, error)

+ func (s *Server) Browse(serviceType string) (*Browser, error)

+ func (s *Server) Cache() *Cache

+ func (s *Server) Close() error

+ func (s *Server) Config() Config

+ func (s *Server) HostIPs() []net.IP

+ func (s *Server) HostName() string

+ func (s *Server) RegisterService(svc *ServiceInstance) error

+ func (s *Server) ResolveHost(ctx context.Context, host string) ([]net.IP, error)

+ func (s *Server) Services() []*ServiceInstance

+ func (s *Server) Start() error

+ func (s *Server) String() string

+ func (s *Server) UnregisterService(svc *ServiceInstance) error

+ type ServiceEvent struct

+ Action int

+ Instance *ServiceInstanceInfo

+ type ServiceInstance struct

+ Domain string

+ Host string

+ IPs []net.IP

+ Name string

+ Port uint16

+ Priority uint16

+ TTL uint32

+ Text []string

+ Type string

+ Weight uint16

+ func (s *ServiceInstance) InstanceName() string

+ func (s *ServiceInstance) ServiceType() string

+ type ServiceInstanceInfo struct

+ Domain string

+ Host string

+ IPs []net.IP

+ Name string

+ Port uint16

+ Priority uint16

+ Text []string

+ Type string

+ Weight uint16

+ func LookupService(ctx context.Context, serviceType string, port int) ([]*ServiceInstanceInfo, error)

+ func (s *ServiceInstanceInfo) String() string