Documentation ¶
Overview ¶
Package zeroconf is a pure Golang library that employs Multicast DNS-SD for browsing and resolving services in your network and registering own services in the local network.
It basically implements aspects of the standards RFC 6762 (mDNS) and RFC 6763 (DNS-SD). Though it does not support all requirements yet, the aim is to provide a complient solution in the long-term with the community.
By now, it should be compatible to [Avahi](http://avahi.org/) (tested) and Apple's Bonjour (untested). Should work in the most office, home and private environments.
Index ¶
- Constants
- func OverrideLogging(errout logOutLn, infoout logOutLn, debugout logOutLn)
- type ClientOption
- type IPType
- type LookupParams
- type Resolver
- type Server
- func Register(instance, service, domain string, port int, text []string, ...) (*Server, error)
- func RegisterProxy(instance, service, domain string, port int, host string, ips []string, ...) (*Server, error)
- func RegisterServiceEntry(entry *ServiceEntry, ips []string, ifaces []string, notIfaces []string) (*Server, error)
- func RegisterServiceEntryEachInterfaceIP(entry *ServiceEntry, ifaces []string, notIfaces []string) (servers []*Server, err error)
- type ServiceEntry
- type ServiceRecord
Constants ¶
const ( IPv4 = 0x01 IPv6 = 0x02 IPv4AndIPv6 = (IPv4 | IPv6) //< Default option. )
Options for IPType.
Variables ¶
This section is empty.
Functions ¶
func OverrideLogging ¶
func OverrideLogging(errout logOutLn, infoout logOutLn, debugout logOutLn)
OverrideLogging gives us a way to override where we are spewing errors.
Types ¶
type ClientOption ¶
type ClientOption func(*clientOpts)
ClientOption fills the option struct to configure intefaces, etc.
func SelectIPTraffic ¶
func SelectIPTraffic(t IPType) ClientOption
SelectIPTraffic selects the type of IP packets (IPv4, IPv6, or both) this instance listens for. This does not guarantee that only mDNS entries of this sepcific type passes. E.g. typical mDNS packets distributed via IPv4, may contain both DNS A and AAAA entries.
func SelectIfaces ¶
func SelectIfaces(ifaces []net.Interface) ClientOption
SelectIfaces selects the interfaces to query for mDNS records
type IPType ¶
type IPType uint8
IPType specifies the IP traffic the client listens for. This does not guarantee that only mDNS entries of this sepcific type passes. E.g. typical mDNS packets distributed via IPv4, often contain both DNS A and AAAA entries.
type LookupParams ¶
type LookupParams struct { ServiceRecord Entries chan<- *ServiceEntry // Entries Channel // contains filtered or unexported fields }
LookupParams contains configurable properties to create a service discovery request
func NewLookupParams ¶
func NewLookupParams(instance, service, domain string, entries chan<- *ServiceEntry) *LookupParams
NewLookupParams constructs a LookupParams.
type Resolver ¶
type Resolver struct {
// contains filtered or unexported fields
}
Resolver acts as entry point for service lookups and to browse the DNS-SD.
func NewResolver ¶
func NewResolver(options ...ClientOption) (*Resolver, error)
NewResolver creates a new resolver and joins the UDP multicast groups to listen for mDNS messages.
type Server ¶
type Server struct {
// contains filtered or unexported fields
}
Server structure encapsulates both IPv4/IPv6 UDP connections
func Register ¶
func Register(instance, service, domain string, port int, text []string, ifaces []net.Interface) (*Server, error)
Register a service by given arguments. This call will take the system's hostname and lookup IP by that hostname.
func RegisterProxy ¶
func RegisterProxy(instance, service, domain string, port int, host string, ips []string, text []string, ifaces []net.Interface) (*Server, error)
RegisterProxy registers a service proxy. This call will skip the hostname/IP lookup and will use the provided values.
func RegisterServiceEntry ¶
func RegisterServiceEntry(entry *ServiceEntry, ips []string, ifaces []string, notIfaces []string) (*Server, error)
RegisterServiceEntry let's you register a service by handing in a raw ServiceEntry struct for better flexibility, along with string array of ips to publish and intefaces to run the server on. notIfaces lets you black list specific interface to not publish to
func RegisterServiceEntryEachInterfaceIP ¶
func RegisterServiceEntryEachInterfaceIP(entry *ServiceEntry, ifaces []string, notIfaces []string) (servers []*Server, err error)
RegisterServiceEntryEachInterfaceIP publishes the service entry to each interface separately, using each interfaces assigned IP address. If ifaces is empty, it will go through all network interfaces except loopback.
type ServiceEntry ¶
type ServiceEntry struct { ServiceRecord HostName string `json:"hostname"` // Host machine DNS name Port int `json:"port"` // Service Port Text []string `json:"text"` // Service info served as a TXT record TTL uint32 `json:"ttl"` // TTL of the service record AddrIPv4 []net.IP `json:"-"` // Host machine IPv4 address AddrIPv6 []net.IP `json:"-"` // Host machine IPv6 address }
ServiceEntry represents a browse/lookup result for client API. It is also used to configure service registration (server API), which is used to answer multicast queries.
func NewServiceEntry ¶
func NewServiceEntry(instance, service, domain string) *ServiceEntry
NewServiceEntry constructs a ServiceEntry.
type ServiceRecord ¶
type ServiceRecord struct { Instance string `json:"name"` // Instance name (e.g. "My web page") Service string `json:"type"` // Service name (e.g. _http._tcp.) Domain string `json:"domain"` // If blank, assumes "local" // contains filtered or unexported fields }
ServiceRecord contains the basic description of a service, which contains instance name, service type & domain
func NewServiceRecord ¶
func NewServiceRecord(instance, service, domain string) *ServiceRecord
NewServiceRecord constructs a ServiceRecord.
func (*ServiceRecord) ServiceInstanceName ¶
func (s *ServiceRecord) ServiceInstanceName() string
ServiceInstanceName returns a complete service instance name (e.g. MyDemo\ Service._foobar._tcp.local.), which is composed from service instance name, service name and a domain.
func (*ServiceRecord) ServiceName ¶
func (s *ServiceRecord) ServiceName() string
ServiceName returns a complete service name (e.g. _foobar._tcp.local.), which is composed of a service name (also referred as service type) and a domain.
func (*ServiceRecord) ServiceTypeName ¶
func (s *ServiceRecord) ServiceTypeName() string
ServiceTypeName returns the complete identifier for a DNS-SD query.