bare-mdns-discovery

bare-mdns-discovery provides multicast DNS (mDNS) for Bare: low-level record queries and higher-level local service discovery. It's pure JavaScript, built on bare-dgram.

npm i bare-mdns-discovery

Usage

const { MDNS } = require('bare-mdns-discovery')

const mdns = new MDNS()
await mdns.ready()

mdns.on('records', (records, rinfo) => {
  for (const r of records) console.log(r.type, r.name, r.data)
})

mdns.query('_http._tcp.local')

API

MDNS

new MDNS(opts?)

Create a low-level mDNS instance.

Options:

• debug (boolean): Enable debug logging. Default: false.
• iface (string): IPv4 address of the network interface to join the multicast group on. Required on Android — without this, addMembership falls back to the OS default interface which may not be the WiFi interface, causing responses to be silently dropped. Pass the WiFi IP (e.g. from bare-wifi-android's getWifiIP()).

await mdns.ready()

Wait until the responder is bound and ready.

mdns.query(name[, type])

Send an mDNS query. Matching answers arrive on the records event ((records, rinfo)).

mdns.close()

Close the responder.

Discovery

new Discovery(opts?)

High-level service discovery. Extends MDNS.

Options:

• service (string): Service type without prefix/suffix, e.g. 'http', 'googlecast'.
• debug (boolean): Enable debug logging. Default: false.

discovery.discover([timeout]) · discovery.services

Browse for advertised services; services holds the discovered set and a service event fires as each is found.

discovery.close()

Close the socket. Returns a Promise.

See also

• bare-dgram—the UDP sockets this builds on.
• Bare modules—the full bare-* catalog.
• Bare runtime API—the runtime this runs on.