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const DHT = require('bittorrent-dht/server')
const fixtures = require('webtorrent-fixtures')
const fs = require('fs')
const MemoryChunkStore = require('memory-chunk-store')
const series = require('run-series')
const test = require('tape')
const WebTorrent = require('../../')
test('Download using DHT (via .torrent file)', function (t) {
t.plan(10)
const dhtServer = new DHT({ bootstrap: false })
dhtServer.on('error', function (err) { t.fail(err) })
dhtServer.on('warning', function (err) { t.fail(err) })
let client1, client2
series([
function (cb) {
dhtServer.listen(cb)
},
function (cb) {
let announced = false
let loaded = false
let noPeersFound = false
client1 = new WebTorrent({
tracker: false,
dht: { bootstrap: '127.0.0.1:' + dhtServer.address().port }
})
client1.dht.on('listening', function () {
t.equal(client1.dhtPort, client1.dht.address().port)
})
client1.on('error', function (err) { t.fail(err) })
client1.on('warning', function (err) { t.fail(err) })
const torrent = client1.add(fixtures.leaves.parsedTorrent, { store: MemoryChunkStore })
torrent.on('ready', function () {
// torrent metadata has been fetched -- sanity check it
t.equal(torrent.name, 'Leaves of Grass by Walt Whitman.epub')
const names = ['Leaves of Grass by Walt Whitman.epub']
t.deepEqual(torrent.files.map(function (file) { return file.name }), names)
})
torrent.load(fs.createReadStream(fixtures.leaves.contentPath), function (err) {
loaded = true
maybeDone(err)
})
torrent.on('dhtAnnounce', function () {
announced = true
maybeDone(null)
})
torrent.on('noPeers', function (announceType) {
t.equal(announceType, 'dht', 'noPeers event seen with correct announceType')
noPeersFound = true
maybeDone(null)
})
function maybeDone (err) {
if ((announced && loaded && noPeersFound) || err) cb(err, client1)
}
},
function (cb) {
client2 = new WebTorrent({
tracker: false,
dht: { bootstrap: '127.0.0.1:' + dhtServer.address().port }
})
client2.on('error', function (err) { t.fail(err) })
client2.on('warning', function (err) { t.fail(err) })
client2.on('torrent', function (torrent) {
let torrentDone = false
let gotBuffer = false
torrent.files.forEach(function (file) {
file.getBuffer(function (err, buf) {
if (err) throw err
t.deepEqual(buf, fixtures.leaves.content, 'downloaded correct content')
gotBuffer = true
maybeDone()
})
})
torrent.once('done', function () {
t.pass('client2 downloaded torrent from client1')
torrentDone = true
maybeDone()
})
function maybeDone () {
if (torrentDone && gotBuffer) cb(null)
}
})
client2.add(fixtures.leaves.parsedTorrent, { store: MemoryChunkStore })
}
], function (err) {
t.error(err)
client1.destroy(function (err) {
t.error(err, 'client1 destroyed')
})
client2.destroy(function (err) {
t.error(err, 'client2 destroyed')
})
dhtServer.destroy(function (err) {
t.error(err, 'dht server destroyed')
})
})
})
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