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test.js
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test.js
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var dgram = require('dgram')
var tape = require('tape')
var discovery = require('./')
freePort(function (port) {
tape('discovers', function (t) {
var disc1 = discovery()
var disc2 = discovery()
var ns = Math.random().toString(16) + '-' + process.pid
var appName = 'dns-discovery-' + ns
disc2.on('peer', function (name, peer) {
disc1.destroy()
disc2.destroy()
t.same(name, appName)
t.same(peer.port, 8080)
t.same(typeof peer.host, 'string')
t.end()
})
disc1.announce(appName, 8080)
})
tape('discovers only using server', function (t) {
t.plan(4)
var server = discovery({multicast: false})
var client2 = discovery({multicast: false, server: 'localhost:' + port})
var client1 = discovery({multicast: false, server: 'localhost:' + port})
server.on('peer', function (name, peer) {
t.same(name, 'hello-world')
t.same(peer.port, 8080)
})
client2.on('peer', function (name, peer) {
t.same(name, 'hello-world')
t.same(peer.port, 8080)
server.destroy()
client1.destroy()
client2.destroy()
})
server.listen(port, function () {
client1.announce('hello-world', 8080, function () {
client2.lookup('hello-world')
})
})
})
tape('discovers only using server with secondary port', function (t) {
t.plan(4)
var server = discovery({multicast: false})
var client2 = discovery({multicast: false, server: 'localhost:9999,' + port})
var client1 = discovery({multicast: false, server: 'localhost:9998,' + port})
server.on('peer', function (name, peer) {
t.same(name, 'hello-world')
t.same(peer.port, 8080)
})
client2.on('peer', function (name, peer) {
t.same(name, 'hello-world')
t.same(peer.port, 8080)
server.destroy()
client1.destroy()
client2.destroy()
})
server.listen(port, function () {
client1.announce('hello-world', 8080, function () {
client2.lookup('hello-world')
})
})
})
tape('discovers only using multiple servers', function (t) {
t.plan(6)
var server = discovery({multicast: false})
var client1 = discovery({multicast: false, server: ['localhost:' + port, 'localhost:' + port]})
var client2 = discovery({multicast: false, server: ['localhost:' + port, 'localhost:' + port]})
server.on('peer', function (name, peer) {
t.same(name, 'hello-world')
t.same(peer.port, 8080)
})
client2.on('peer', function (name, peer) {
t.same(name, 'hello-world')
t.same(peer.port, 8080)
server.destroy()
client1.destroy()
client2.destroy()
})
server.listen(port, function () {
client1.announce('hello-world', 8080, function () {
client2.lookup('hello-world')
})
})
})
tape('limit', function (t) {
var server = discovery({multicast: false, limit: 1})
var ns = Math.random().toString(16) + '-' + process.pid
server.announce(ns + 'hello-world', 8080)
server.announce(ns + 'hello-world-2', 8081)
var domains = server.toJSON()
t.same(domains.length, 1)
t.same(domains[0].records.length, 1)
t.end()
})
tape('push', function (t) {
var server = discovery({multicast: false})
var client1 = discovery({multicast: false, server: 'localhost:' + port})
var client2 = discovery({multicast: false, server: 'localhost:' + port})
server.listen(port, function () {
server.once('peer', function () {
client2.announce('hello-world', 8081)
})
client1.lookup('hello-world')
client1.announce('hello-world', 8080)
client1.on('peer', function (id, peer) {
if (peer.port === 8081) {
client1.destroy()
client2.destroy()
server.destroy()
t.pass('got peer')
t.end()
}
})
})
})
tape('unannounce', function (t) {
var server = discovery({multicast: false})
var client1 = discovery({multicast: false, server: 'localhost:' + port})
var client2 = discovery({multicast: false, server: 'localhost:' + port})
client2.on('peer', function () {
t.fail('no peers should be discovered')
})
server.listen(port, function () {
client1.announce('test', 8080, function () {
client1.unannounce('test', 8080, function () {
client2.lookup('test', function () {
setTimeout(function () {
client2.destroy()
client1.destroy()
server.destroy()
t.end()
}, 100)
})
})
})
})
})
tape('custom socket + server', function (t) {
t.plan(5)
var socket = dgram.createSocket('udp4')
socket.once('message', function () {
t.pass('used custom socket')
})
var server = discovery({multicast: false})
var client2 = discovery({multicast: false, server: 'localhost:' + port, socket: socket})
var client1 = discovery({multicast: false, server: 'localhost:' + port})
server.on('peer', function (name, peer) {
t.same(name, 'hello-world')
t.same(peer.port, 8080)
})
client2.on('peer', function (name, peer) {
t.same(name, 'hello-world')
t.same(peer.port, 8080)
server.destroy()
client1.destroy()
client2.destroy()
})
server.listen(port, function () {
client1.announce('hello-world', 8080, function () {
client2.lookup('hello-world')
})
})
})
tape('implied port', function (t) {
t.plan(4)
var socket = dgram.createSocket('udp4')
var server = discovery({multicast: false})
var client2 = discovery({multicast: false, server: 'localhost:' + port})
var client1 = discovery({multicast: false, server: 'localhost:' + port, socket: socket})
server.on('peer', function (name, peer) {
t.same(name, 'hello-world')
t.same(peer.port, socket.address().port)
})
client2.on('peer', function (name, peer) {
t.same(name, 'hello-world')
t.same(peer.port, socket.address().port)
server.destroy()
client1.destroy()
client2.destroy()
})
server.listen(port, function () {
client1.announce('hello-world', 8080, {impliedPort: true}, function () {
client2.lookup('hello-world')
})
})
})
tape('loopback', function (t) {
var client = discovery({loopback: true})
client.on('peer', function () {
client.destroy()
t.end()
})
client.announce('test', 8080)
})
tape('public port', function (t) {
var server = discovery({multicast: false})
var client2 = discovery({server: 'localhost:' + port})
var client1 = discovery({server: 'localhost:' + port})
var ns = Math.random().toString(16) + '-' + process.pid
var appName = 'dns-discovery-' + ns
var missing = 2
server.on('peer', function (name, peer) {
t.same(name, appName)
t.same(peer.port, 9090, 'server port')
})
client2.on('peer', function (name, peer) {
t.same(name, appName)
t.same(peer.port, peer.host === '127.0.0.1' ? 9090 : 8080)
if (--missing) return
server.destroy()
client1.destroy()
client2.destroy()
t.end()
})
server.listen(port, function () {
client1.announce(appName, 8080, {publicPort: 9090}, function () {
client2.lookup(appName)
})
})
})
})
function freePort (cb) {
var socket = dgram.createSocket('udp4')
socket.bind(0, function () {
socket.on('close', cb.bind(null, socket.address().port))
socket.close()
})
}