bonjour-hap
A Bonjour/Zeroconf protocol implementation in pure JavaScript. Publish
services on the local network or discover existing services using
multicast DNS.
Notice
The bonjour-hap
library was used in HAP-NodeJS in versions
prior to v0.8.0.
bonjour-hap
does NOT correctly implement mdns service discovery as it does not correctly implement
RFC 6762 or RFC 6763. The library heavily congest the network with unnecessary traffic, does not implement
certain features and does not behave as expected from a mdns responder (or querier).
It SHOULD NOT be used anymore. It is not maintained anymore. The code should not be taken as reference for anything.
bonjour-hap
was replaced by the ciao library, which is basically a rewrite
and strongly adheres to the mentioned RFCs. Ciao is used in HAP-NodeJS
since v0.8.0.
Installation
npm install bonjour-hap
Usage
var bonjour = require('bonjour-hap')()
bonjour.publish({ name: 'My Web Server', type: 'http', port: 3000 })
bonjour.find({ type: 'http' }, function (service) {
console.log('Found an HTTP server:', service)
})
API
Initializing
var bonjour = require('bonjour-hap')([options])
The options
are optional and will be used when initializing the
underlying multicast-dns server. For details see the multicast-dns
documentation.
Publishing
var service = bonjour.publish(options)
Publishes a new service.
Options are:
name
(string)host
(string, optional) - defaults to local hostnameport
(number)type
(string)subtypes
(array of strings, optional)protocol
(string, optional) - udp
or tcp
(default)txt
(object, optional) - a key/value object to broadcast as the TXT
record
IANA maintains a list of official service types and port
numbers.
bonjour.unpublishAll([callback])
Unpublish all services. The optional callback
will be called when the
services have been unpublished.
bonjour.destroy()
Destroy the mdns instance. Closes the udp socket.
Browser
var browser = bonjour.find(options[, onup])
Listen for services advertised on the network. An optional callback can
be provided as the 2nd argument and will be added as an event listener
for the up
event.
Options (all optional):
type
(string)subtypes
(array of strings)protocol
(string) - defaults to tcp
txt
(object) - passed into dns-txt
module contructor. Set to { binary: true }
if you want to keep the TXT records in binary
var browser = bonjour.findOne(options[, callback])
Listen for and call the callback
with the first instance of a service
matching the options
. If no callback
is given, it's expected that
you listen for the up
event. The returned browser
will automatically
stop it self after the first matching service.
Options are the same as given in the browser.find
function.
Event: up
Emitted every time a new service is found that matches the browser.
Event: down
Emitted every time an existing service emmits a goodbye message.
browser.services
An array of services known by the browser to be online.
browser.start()
Start looking for matching services.
browser.stop()
Stop looking for matching services.
browser.update()
Broadcast the query again.
Service
Event: up
Emitted when the service is up.
Event: error
Emitted if an error occurrs while publishing the service.
service.stop([callback])
Unpublish the service. The optional callback
will be called when the
service have been unpublished.
service.start()
Publish the service.
service.updateTxt(object)
Update the txt record of the service.
service.name
The name of the service, e.g. Apple TV
.
service.type
The type of the service, e.g. http
.
service.subtypes
An array of subtypes. Note that this property might be null
.
service.protocol
The protocol used by the service, e.g. tcp
.
service.host
The hostname or ip address where the service resides.
service.port
The port on which the service listens, e.g. 5000
.
service.fqdn
The fully qualified domain name of the service. E.g. if given the name
Foo Bar
, the type http
and the protocol tcp
, the service.fqdn
property will be Foo Bar._http._tcp.local
.
service.txt
The TXT record advertised by the service (a key/value object). Note that
this property might be null
.
service.published
A boolean indicating if the service is currently published.
License
MIT