Discovering Chromecasts in local network

index.js

const mdns = require('mdns')

const browser = mdns.createBrowser(mdns.tcp('googlecast'))
browser.on('serviceUp', service => {
  const { md, fn } = service.txtRecord
  console.log(md, fn)
})
browser.on('serviceDown', service => {
  const { md, fn } = service.txtRecord
  console.log(md, fn)
})

setTimeout(() => {
  browser.stop()
}, 5000)

browser.start()

package.json

{
  "dependencies": {
    "mdns": "^2.3.4"
  }
}