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- #!/usr/bin/env node
- var mdns = require('./')()
- var path = require('path')
- var os = require('os')
- var announcing = process.argv.indexOf('--announce') > -1
- if (process.argv.length < 3) {
- console.error('Usage: %s <hostname>', path.basename(process.argv[1]))
- process.exit(1)
- }
- var hostname = process.argv[2]
- if (announcing) {
- var ip = getIp()
- mdns.on('query', function (query) {
- query.questions.forEach(function (q) {
- if (q.name === hostname) {
- console.log('Responding %s -> %s', q.name, ip)
- mdns.respond({
- answers: [{
- type: 'A',
- name: q.name,
- data: ip
- }]
- })
- }
- })
- })
- } else {
- mdns.on('response', function (response) {
- response.answers.forEach(function (answer) {
- if (answer.name === hostname) {
- console.log(answer.data)
- process.exit()
- }
- })
- })
- mdns.query(hostname, 'A')
- // Give responses 3 seconds to respond
- setTimeout(function () {
- console.error('Hostname not found')
- process.exit(1)
- }, 3000)
- }
- function getIp () {
- var networks = os.networkInterfaces()
- var found = '127.0.0.1'
- Object.keys(networks).forEach(function (k) {
- var n = networks[k]
- n.forEach(function (addr) {
- if (addr.family === 'IPv4' && !addr.internal) {
- found = addr.address
- }
- })
- })
- return found
- }
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