standard

bin/cmd.js

@@ -1,9 +1,9 @@
 #!/usr/bin/env node
 
-var minimist = require('minimist')
+const minimist = require('minimist')
-var Server = require('../').Server
+const Server = require('../').Server
 
-var argv = minimist(process.argv.slice(2), {
+const argv = minimist(process.argv.slice(2), {
   alias: {
     h: 'help',
     p: 'port',
@@ -70,13 +70,13 @@ if (argv.help) {
 
 if (argv.silent) argv.quiet = true
 
-var allFalsy = !argv.http && !argv.udp && !argv.ws
+const allFalsy = !argv.http && !argv.udp && !argv.ws
 
 argv.http = allFalsy || argv.http
 argv.udp = allFalsy || argv.udp
 argv.ws = allFalsy || argv.ws
 
-var server = new Server({
+const server = new Server({
   http: argv.http,
   interval: argv.interval,
   stats: argv.stats,
@@ -104,7 +104,7 @@ server.on('stop', function (addr) {
   if (!argv.quiet) console.log('stop: ' + addr)
 })
 
-var hostname = {
+const hostname = {
   http: argv['http-hostname'],
   udp4: argv['udp-hostname'],
   udp6: argv['udp6-hostname']
@@ -112,33 +112,33 @@ var hostname = {
 
 server.listen(argv.port, hostname, function () {
   if (server.http && argv.http && !argv.quiet) {
-    var httpAddr = server.http.address()
+    const httpAddr = server.http.address()
-    var httpHost = httpAddr.address !== '::' ? httpAddr.address : 'localhost'
+    const httpHost = httpAddr.address !== '::' ? httpAddr.address : 'localhost'
-    var httpPort = httpAddr.port
+    const httpPort = httpAddr.port
     console.log('HTTP tracker: http://' + httpHost + ':' + httpPort + '/announce')
   }
   if (server.udp && !argv.quiet) {
-    var udpAddr = server.udp.address()
+    const udpAddr = server.udp.address()
-    var udpHost = udpAddr.address
+    const udpHost = udpAddr.address
-    var udpPort = udpAddr.port
+    const udpPort = udpAddr.port
     console.log('UDP tracker: udp://' + udpHost + ':' + udpPort)
   }
   if (server.udp6 && !argv.quiet) {
-    var udp6Addr = server.udp6.address()
+    const udp6Addr = server.udp6.address()
-    var udp6Host = udp6Addr.address !== '::' ? udp6Addr.address : 'localhost'
+    const udp6Host = udp6Addr.address !== '::' ? udp6Addr.address : 'localhost'
-    var udp6Port = udp6Addr.port
+    const udp6Port = udp6Addr.port
     console.log('UDP6 tracker: udp://' + udp6Host + ':' + udp6Port)
   }
   if (server.ws && !argv.quiet) {
-    var wsAddr = server.http.address()
+    const wsAddr = server.http.address()
-    var wsHost = wsAddr.address !== '::' ? wsAddr.address : 'localhost'
+    const wsHost = wsAddr.address !== '::' ? wsAddr.address : 'localhost'
-    var wsPort = wsAddr.port
+    const wsPort = wsAddr.port
     console.log('WebSocket tracker: ws://' + wsHost + ':' + wsPort)
   }
   if (server.http && argv.stats && !argv.quiet) {
-    var statsAddr = server.http.address()
+    const statsAddr = server.http.address()
-    var statsHost = statsAddr.address !== '::' ? statsAddr.address : 'localhost'
+    const statsHost = statsAddr.address !== '::' ? statsAddr.address : 'localhost'
-    var statsPort = statsAddr.port
+    const statsPort = statsAddr.port
     console.log('Tracker stats: http://' + statsHost + ':' + statsPort + '/stats')
   }
 })

examples/express-embed/server.js

@@ -1,27 +1,27 @@
 #!/usr/bin/env node
 
-var Server = require('../..').Server
+const Server = require('../..').Server
-var express = require('express')
+const express = require('express')
-var app = express()
+const app = express()
 
 // https://wiki.theory.org/BitTorrentSpecification#peer_id
-var whitelist = {
+const whitelist = {
   UT: true // uTorrent
 }
 
-var server = new Server({
+const server = new Server({
   http: false, // we do our own
   udp: false, // not interested
   ws: false, // not interested
   filter: function (params) {
     // black/whitelist for disallowing/allowing specific clients [default=allow all]
     // this example only allows the uTorrent client
-    var client = params.peer_id[1] + params.peer_id[2]
+    const client = params.peer_id[1] + params.peer_id[2]
     return whitelist[client]
   }
 })
 
-var onHttpRequest = server.onHttpRequest.bind(server)
+const onHttpRequest = server.onHttpRequest.bind(server)
 app.get('/announce', onHttpRequest)
 app.get('/scrape', onHttpRequest)
 

lib/client/http-tracker.js

@@ -86,7 +86,7 @@ class HTTPTracker extends Tracker {
 
     // Otherwise, wait a short time for pending requests to complete, then force
     // destroy them.
-    var timeout = setTimeout(destroyCleanup, common.DESTROY_TIMEOUT)
+    let timeout = setTimeout(destroyCleanup, common.DESTROY_TIMEOUT)
 
     // But, if all pending requests complete before the timeout fires, do cleanup
     // right away.

lib/client/udp-tracker.js

@@ -46,7 +46,7 @@ class UDPTracker extends Tracker {
 
     // Otherwise, wait a short time for pending requests to complete, then force
     // destroy them.
-    var timeout = setTimeout(destroyCleanup, common.DESTROY_TIMEOUT)
+    let timeout = setTimeout(destroyCleanup, common.DESTROY_TIMEOUT)
 
     // But, if all pending requests complete before the timeout fires, do cleanup
     // right away.

lib/client/websocket-tracker.js

@@ -134,7 +134,7 @@ class WebSocketTracker extends Tracker {
 
     // Otherwise, wait a short time for potential responses to come in from the
     // server, then force close the socket.
-    var timeout = setTimeout(destroyCleanup, common.DESTROY_TIMEOUT)
+    let timeout = setTimeout(destroyCleanup, common.DESTROY_TIMEOUT)
 
     // But, if a response comes from the server before the timeout fires, do cleanup
     // right away.

lib/common-node.js

@@ -3,7 +3,7 @@
  * These are separate from common.js so they can be skipped when bundling for the browser.
  */
 
-var querystring = require('querystring')
+const querystring = require('querystring')
 
 exports.IPV4_RE = /^[\d.]+$/
 exports.IPV6_RE = /^[\da-fA-F:]+$/
@@ -38,7 +38,7 @@ exports.REQUEST_TIMEOUT = 15000
 exports.DESTROY_TIMEOUT = 1000
 
 function toUInt32 (n) {
-  var buf = Buffer.allocUnsafe(4)
+  const buf = Buffer.allocUnsafe(4)
   buf.writeUInt32BE(n, 0)
   return buf
 }
@@ -61,7 +61,7 @@ exports.querystringParse = function (q) {
  * @return {string}
  */
 exports.querystringStringify = function (obj) {
-  var ret = querystring.stringify(obj, null, null, { encodeURIComponent: escape })
+  let ret = querystring.stringify(obj, null, null, { encodeURIComponent: escape })
   ret = ret.replace(/[@*/+]/g, function (char) {
     // `escape` doesn't encode the characters @*/+ so we do it manually
     return '%' + char.charCodeAt(0).toString(16).toUpperCase()

lib/common.js

@@ -19,5 +19,5 @@ exports.hexToBinary = function (str) {
   return Buffer.from(str, 'hex').toString('binary')
 }
 
-var config = require('./common-node')
+const config = require('./common-node')
 Object.assign(exports, config)

lib/server/parse-http.js

@@ -1,11 +1,11 @@
 module.exports = parseHttpRequest
 
-var common = require('../common')
+const common = require('../common')
 
 function parseHttpRequest (req, opts) {
   if (!opts) opts = {}
-  var s = req.url.split('?')
+  const s = req.url.split('?')
-  var params = common.querystringParse(s[1])
+  const params = common.querystringParse(s[1])
   params.type = 'http'
 
   if (opts.action === 'announce' || s[0] === '/announce') {

lib/server/parse-udp.js

@@ -1,12 +1,12 @@
 module.exports = parseUdpRequest
 
-var ipLib = require('ip')
+const ipLib = require('ip')
-var common = require('../common')
+const common = require('../common')
 
 function parseUdpRequest (msg, rinfo) {
   if (msg.length < 16) throw new Error('received packet is too short')
 
-  var params = {
+  const params = {
     connectionId: msg.slice(0, 8), // 64-bit
     action: msg.readUInt32BE(8),
     transactionId: msg.readUInt32BE(12),
@@ -29,7 +29,7 @@ function parseUdpRequest (msg, rinfo) {
     params.event = common.EVENT_IDS[msg.readUInt32BE(80)]
     if (!params.event) throw new Error('invalid event') // early return
 
-    var ip = msg.readUInt32BE(84) // optional
+    const ip = msg.readUInt32BE(84) // optional
     params.ip = ip
       ? ipLib.toString(ip)
       : rinfo.address
@@ -49,8 +49,8 @@ function parseUdpRequest (msg, rinfo) {
   } else if (params.action === common.ACTIONS.SCRAPE) { // scrape message
     if ((msg.length - 16) % 20 !== 0) throw new Error('invalid scrape message')
     params.info_hash = []
-    for (var i = 0, len = (msg.length - 16) / 20; i < len; i += 1) {
+    for (let i = 0, len = (msg.length - 16) / 20; i < len; i += 1) {
-      var infoHash = msg.slice(16 + (i * 20), 36 + (i * 20)).toString('hex') // 20 bytes
+      const infoHash = msg.slice(16 + (i * 20), 36 + (i * 20)).toString('hex') // 20 bytes
       params.info_hash.push(infoHash)
     }
   } else {
@@ -60,16 +60,16 @@ function parseUdpRequest (msg, rinfo) {
   return params
 }
 
-var TWO_PWR_32 = (1 << 16) * 2
+const TWO_PWR_32 = (1 << 16) * 2
 
 /**
  * Return the closest floating-point representation to the buffer value. Precision will be
  * lost for big numbers.
  */
 function fromUInt64 (buf) {
-  var high = buf.readUInt32BE(0) | 0 // force
+  const high = buf.readUInt32BE(0) | 0 // force
-  var low = buf.readUInt32BE(4) | 0
+  const low = buf.readUInt32BE(4) | 0
-  var lowUnsigned = (low >= 0) ? low : TWO_PWR_32 + low
+  const lowUnsigned = (low >= 0) ? low : TWO_PWR_32 + low
 
   return (high * TWO_PWR_32) + lowUnsigned
 }

lib/server/parse-websocket.js

@@ -1,6 +1,6 @@
 module.exports = parseWebSocketRequest
 
-var common = require('../common')
+const common = require('../common')
 
 function parseWebSocketRequest (socket, opts, params) {
   if (!opts) opts = {}

lib/server/swarm.js

@@ -1,14 +1,14 @@
 module.exports = Swarm
 
-var arrayRemove = require('unordered-array-remove')
+const arrayRemove = require('unordered-array-remove')
-var debug = require('debug')('bittorrent-tracker:swarm')
+const debug = require('debug')('bittorrent-tracker:swarm')
-var LRU = require('lru')
+const LRU = require('lru')
-var randomIterate = require('random-iterate')
+const randomIterate = require('random-iterate')
 
 // Regard this as the default implementation of an interface that you
 // need to support when overriding Server.createSwarm() and Server.getSwarm()
 function Swarm (infoHash, server) {
-  var self = this
+  const self = this
   self.infoHash = infoHash
   self.complete = 0
   self.incomplete = 0
@@ -21,8 +21,8 @@ function Swarm (infoHash, server) {
   // When a peer is evicted from the LRU store, send a synthetic 'stopped' event
   // so the stats get updated correctly.
   self.peers.on('evict', function (data) {
-    var peer = data.value
+    const peer = data.value
-    var params = {
+    const params = {
       type: peer.type,
       event: 'stopped',
       numwant: 0,
@@ -34,10 +34,10 @@ function Swarm (infoHash, server) {
 }
 
 Swarm.prototype.announce = function (params, cb) {
-  var self = this
+  const self = this
-  var id = params.type === 'ws' ? params.peer_id : params.addr
+  const id = params.type === 'ws' ? params.peer_id : params.addr
   // Mark the source peer as recently used in cache
-  var peer = self.peers.get(id)
+  const peer = self.peers.get(id)
 
   if (params.event === 'started') {
     self._onAnnounceStarted(params, peer, id)
@@ -95,7 +95,7 @@ Swarm.prototype._onAnnounceStopped = function (params, peer, id) {
   // If it's a websocket, remove this swarm's infohash from the list of active
   // swarms that this peer is participating in.
   if (peer.socket && !peer.socket.destroyed) {
-    var index = peer.socket.infoHashes.indexOf(this.infoHash)
+    const index = peer.socket.infoHashes.indexOf(this.infoHash)
     arrayRemove(peer.socket.infoHashes, index)
   }
 
@@ -133,12 +133,12 @@ Swarm.prototype._onAnnounceUpdate = function (params, peer, id) {
 }
 
 Swarm.prototype._getPeers = function (numwant, ownPeerId, isWebRTC) {
-  var peers = []
+  const peers = []
-  var ite = randomIterate(this.peers.keys)
+  const ite = randomIterate(this.peers.keys)
-  var peerId
+  let peerId
   while ((peerId = ite()) && peers.length < numwant) {
     // Don't mark the peer as most recently used on announce
-    var peer = this.peers.peek(peerId)
+    const peer = this.peers.peek(peerId)
     if (!peer) continue
     if (isWebRTC && peer.peerId === ownPeerId) continue // don't send peer to itself
     if ((isWebRTC && peer.type !== 'ws') || (!isWebRTC && peer.type === 'ws')) continue // send proper peer type

test/client-large-torrent.js

@@ -1,15 +1,15 @@
-var Client = require('../')
+const Client = require('../')
-var common = require('./common')
+const common = require('./common')
-var fixtures = require('webtorrent-fixtures')
+const fixtures = require('webtorrent-fixtures')
-var test = require('tape')
+const test = require('tape')
 
-var peerId = Buffer.from('01234567890123456789')
+const peerId = Buffer.from('01234567890123456789')
 
 function testLargeTorrent (t, serverType) {
   t.plan(9)
 
   common.createServer(t, serverType, function (server, announceUrl) {
-    var client = new Client({
+    const client = new Client({
       infoHash: fixtures.sintel.parsedTorrent.infoHash,
       peerId,
       port: 6881,

test/client-magnet.js

@@ -1,18 +1,18 @@
-var Client = require('../')
+const Client = require('../')
-var common = require('./common')
+const common = require('./common')
-var fixtures = require('webtorrent-fixtures')
+const fixtures = require('webtorrent-fixtures')
-var magnet = require('magnet-uri')
+const magnet = require('magnet-uri')
-var test = require('tape')
+const test = require('tape')
 
-var peerId = Buffer.from('01234567890123456789')
+const peerId = Buffer.from('01234567890123456789')
 
 function testMagnet (t, serverType) {
   t.plan(9)
 
-  var parsedTorrent = magnet(fixtures.leaves.magnetURI)
+  const parsedTorrent = magnet(fixtures.leaves.magnetURI)
 
   common.createServer(t, serverType, function (server, announceUrl) {
-    var client = new Client({
+    const client = new Client({
       infoHash: parsedTorrent.infoHash,
       announce: announceUrl,
       peerId,

test/client-ws-socket-pool.js

@@ -1,16 +1,16 @@
-var Client = require('../')
+const Client = require('../')
-var common = require('./common')
+const common = require('./common')
-var fixtures = require('webtorrent-fixtures')
+const fixtures = require('webtorrent-fixtures')
-var test = require('tape')
+const test = require('tape')
 
-var peerId = Buffer.from('01234567890123456789')
+const peerId = Buffer.from('01234567890123456789')
-var port = 6681
+const port = 6681
 
 test('ensure client.destroy() callback is called with re-used websockets in socketPool', function (t) {
   t.plan(4)
 
   common.createServer(t, 'ws', function (server, announceUrl) {
-    var client1 = new Client({
+    const client1 = new Client({
       infoHash: fixtures.leaves.parsedTorrent.infoHash,
       announce: announceUrl,
       peerId,
@@ -27,7 +27,7 @@ test('ensure client.destroy() callback is called with re-used websockets in sock
     client1.once('update', function () {
       t.pass('got client1 update')
       // second ws client using same announce url will re-use the same websocket
-      var client2 = new Client({
+      const client2 = new Client({
         infoHash: fixtures.alice.parsedTorrent.infoHash, // different info hash
         announce: announceUrl,
         peerId,

test/client.js

@@ -1,18 +1,18 @@
-var Client = require('../')
+const Client = require('../')
-var common = require('./common')
+const common = require('./common')
-var fixtures = require('webtorrent-fixtures')
+const fixtures = require('webtorrent-fixtures')
-var test = require('tape')
+const test = require('tape')
 
-var peerId1 = Buffer.from('01234567890123456789')
+const peerId1 = Buffer.from('01234567890123456789')
-var peerId2 = Buffer.from('12345678901234567890')
+const peerId2 = Buffer.from('12345678901234567890')
-var peerId3 = Buffer.from('23456789012345678901')
+const peerId3 = Buffer.from('23456789012345678901')
-var port = 6881
+const port = 6881
 
 function testClientStart (t, serverType) {
   t.plan(4)
 
   common.createServer(t, serverType, function (server, announceUrl) {
-    var client = new Client({
+    const client = new Client({
       infoHash: fixtures.leaves.parsedTorrent.infoHash,
       announce: announceUrl,
       peerId: peerId1,
@@ -58,7 +58,7 @@ function testClientStop (t, serverType) {
   t.plan(4)
 
   common.createServer(t, serverType, function (server, announceUrl) {
-    var client = new Client({
+    const client = new Client({
       infoHash: fixtures.leaves.parsedTorrent.infoHash,
       announce: announceUrl,
       peerId: peerId1,
@@ -106,7 +106,7 @@ function testClientStopDestroy (t, serverType) {
   t.plan(2)
 
   common.createServer(t, serverType, function (server, announceUrl) {
-    var client = new Client({
+    const client = new Client({
       infoHash: fixtures.leaves.parsedTorrent.infoHash,
       announce: announceUrl,
       peerId: peerId1,
@@ -160,7 +160,7 @@ function testClientUpdate (t, serverType) {
   t.plan(4)
 
   common.createServer(t, serverType, function (server, announceUrl) {
-    var client = new Client({
+    const client = new Client({
       infoHash: fixtures.leaves.parsedTorrent.infoHash,
       announce: announceUrl,
       peerId: peerId1,
@@ -213,7 +213,7 @@ function testClientScrape (t, serverType) {
   t.plan(4)
 
   common.createServer(t, serverType, function (server, announceUrl) {
-    var client = new Client({
+    const client = new Client({
       infoHash: fixtures.leaves.parsedTorrent.infoHash,
       announce: announceUrl,
       peerId: peerId1,
@@ -255,7 +255,7 @@ function testClientAnnounceWithParams (t, serverType) {
   t.plan(5)
 
   common.createServer(t, serverType, function (server, announceUrl) {
-    var client = new Client({
+    const client = new Client({
       infoHash: fixtures.leaves.parsedTorrent.infoHash,
       announce: announceUrl,
       peerId: peerId1,
@@ -303,7 +303,7 @@ function testClientGetAnnounceOpts (t, serverType) {
   t.plan(5)
 
   common.createServer(t, serverType, function (server, announceUrl) {
-    var client = new Client({
+    const client = new Client({
       infoHash: fixtures.leaves.parsedTorrent.infoHash,
       announce: announceUrl,
       peerId: peerId1,
@@ -354,7 +354,7 @@ function testClientAnnounceWithNumWant (t, serverType) {
   t.plan(4)
 
   common.createServer(t, serverType, function (server, announceUrl) {
-    var client1 = new Client({
+    const client1 = new Client({
       infoHash: fixtures.leaves.parsedTorrent.infoHash,
       announce: [announceUrl],
       peerId: peerId1,
@@ -368,7 +368,7 @@ function testClientAnnounceWithNumWant (t, serverType) {
 
     client1.start()
     client1.once('update', function () {
-      var client2 = new Client({
+      const client2 = new Client({
         infoHash: fixtures.leaves.parsedTorrent.infoHash,
         announce: announceUrl,
         peerId: peerId2,
@@ -382,7 +382,7 @@ function testClientAnnounceWithNumWant (t, serverType) {
 
       client2.start()
       client2.once('update', function () {
-        var client3 = new Client({
+        const client3 = new Client({
           infoHash: fixtures.leaves.parsedTorrent.infoHash,
           announce: announceUrl,
           peerId: peerId3,
@@ -398,7 +398,7 @@ function testClientAnnounceWithNumWant (t, serverType) {
         client3.on('peer', function () {
           t.pass('got one peer (this should only fire once)')
 
-          var num = 3
+          let num = 3
           function tryCloseServer () {
             num -= 1
             if (num === 0) server.close()
@@ -445,7 +445,7 @@ test('http: userAgent', function (t) {
       t.ok(req.headers['user-agent'].indexOf('WebTorrent') !== -1)
     })
 
-    var client = new Client({
+    const client = new Client({
       infoHash: fixtures.leaves.parsedTorrent.infoHash,
       announce: announceUrl,
       peerId: peerId1,
@@ -472,7 +472,7 @@ function testSupportedTracker (t, serverType) {
   t.plan(1)
 
   common.createServer(t, serverType, function (server, announceUrl) {
-    var client = new Client({
+    const client = new Client({
       infoHash: fixtures.leaves.parsedTorrent.infoHash,
       announce: announceUrl,
       peerId: peerId1,
@@ -510,7 +510,7 @@ test('ws: valid tracker port', function (t) {
 function testUnsupportedTracker (t, announceUrl) {
   t.plan(1)
 
-  var client = new Client({
+  const client = new Client({
     infoHash: fixtures.leaves.parsedTorrent.infoHash,
     announce: announceUrl,
     peerId: peerId1,

test/common.js

@@ -1,4 +1,4 @@
-var Server = require('../').Server
+const Server = require('../').Server
 
 exports.createServer = function (t, opts, cb) {
   if (typeof opts === 'string') opts = { serverType: opts }
@@ -7,14 +7,14 @@ exports.createServer = function (t, opts, cb) {
   opts.udp = (opts.serverType === 'udp')
   opts.ws = (opts.serverType === 'ws')
 
-  var server = new Server(opts)
+  const server = new Server(opts)
 
   server.on('error', function (err) { t.error(err) })
   server.on('warning', function (err) { t.error(err) })
 
   server.listen(0, function () {
-    var port = server[opts.serverType].address().port
+    const port = server[opts.serverType].address().port
-    var announceUrl
+    let announceUrl
     if (opts.serverType === 'http') {
       announceUrl = 'http://127.0.0.1:' + port + '/announce'
     } else if (opts.serverType === 'udp') {
@@ -29,8 +29,8 @@ exports.createServer = function (t, opts, cb) {
 
 exports.mockWebsocketTracker = function (client) {
   client._trackers[0]._generateOffers = function (numwant, cb) {
-    var offers = []
+    const offers = []
-    for (var i = 0; i < numwant; i++) {
+    for (let i = 0; i < numwant; i++) {
       offers.push({ fake_offer: 'fake_offer_' + i })
     }
     process.nextTick(function () {

test/destroy.js

@@ -1,16 +1,16 @@
-var Client = require('../')
+const Client = require('../')
-var common = require('./common')
+const common = require('./common')
-var fixtures = require('webtorrent-fixtures')
+const fixtures = require('webtorrent-fixtures')
-var test = require('tape')
+const test = require('tape')
 
-var peerId = Buffer.from('01234567890123456789')
+const peerId = Buffer.from('01234567890123456789')
-var port = 6881
+const port = 6881
 
 function testNoEventsAfterDestroy (t, serverType) {
   t.plan(1)
 
   common.createServer(t, serverType, function (server, announceUrl) {
-    var client = new Client({
+    const client = new Client({
       infoHash: fixtures.leaves.parsedTorrent.infoHash,
       announce: announceUrl,
       peerId,

test/evict.js

@@ -1,21 +1,21 @@
-var Client = require('../')
+const Client = require('../')
-var common = require('./common')
+const common = require('./common')
-var test = require('tape')
+const test = require('tape')
-var wrtc = require('wrtc')
+const wrtc = require('wrtc')
 
-var infoHash = '4cb67059ed6bd08362da625b3ae77f6f4a075705'
+const infoHash = '4cb67059ed6bd08362da625b3ae77f6f4a075705'
-var peerId = Buffer.from('01234567890123456789')
+const peerId = Buffer.from('01234567890123456789')
-var peerId2 = Buffer.from('12345678901234567890')
+const peerId2 = Buffer.from('12345678901234567890')
-var peerId3 = Buffer.from('23456789012345678901')
+const peerId3 = Buffer.from('23456789012345678901')
 
 function serverTest (t, serverType, serverFamily) {
   t.plan(10)
 
-  var hostname = serverFamily === 'inet6'
+  const hostname = serverFamily === 'inet6'
     ? '[::1]'
     : '127.0.0.1'
 
-  var opts = {
+  const opts = {
     serverType,
     peersCacheLength: 2 // LRU cache can only contain a max of 2 peers
   }
@@ -23,10 +23,10 @@ function serverTest (t, serverType, serverFamily) {
   common.createServer(t, opts, function (server) {
     // Not using announceUrl param from `common.createServer()` since we
     // want to control IPv4 vs IPv6.
-    var port = server[serverType].address().port
+    const port = server[serverType].address().port
-    var announceUrl = serverType + '://' + hostname + ':' + port + '/announce'
+    const announceUrl = serverType + '://' + hostname + ':' + port + '/announce'
 
-    var client1 = new Client({
+    const client1 = new Client({
       infoHash,
       announce: [announceUrl],
       peerId,
@@ -38,7 +38,7 @@ function serverTest (t, serverType, serverFamily) {
     client1.start()
 
     client1.once('update', function (data) {
-      var client2 = new Client({
+      const client2 = new Client({
         infoHash,
         announce: [announceUrl],
         peerId: peerId2,
@@ -56,14 +56,14 @@ function serverTest (t, serverType, serverFamily) {
           t.equal(swarm.complete + swarm.incomplete, 2)
 
           // Ensure that first peer is evicted when a third one is added
-          var evicted = false
+          let evicted = false
           swarm.peers.once('evict', function (evictedPeer) {
             t.equal(evictedPeer.value.peerId, peerId.toString('hex'))
             t.equal(swarm.complete + swarm.incomplete, 2)
             evicted = true
           })
 
-          var client3 = new Client({
+          const client3 = new Client({
             infoHash,
             announce: [announceUrl],
             peerId: peerId3,

test/filter.js

@@ -1,14 +1,14 @@
-var Client = require('../')
+const Client = require('../')
-var common = require('./common')
+const common = require('./common')
-var fixtures = require('webtorrent-fixtures')
+const fixtures = require('webtorrent-fixtures')
-var test = require('tape')
+const test = require('tape')
 
-var peerId = Buffer.from('01234567890123456789')
+const peerId = Buffer.from('01234567890123456789')
 
 function testFilterOption (t, serverType) {
   t.plan(8)
 
-  var opts = { serverType } // this is test-suite-only option
+  const opts = { serverType } // this is test-suite-only option
   opts.filter = function (infoHash, params, cb) {
     process.nextTick(function () {
       if (infoHash === fixtures.alice.parsedTorrent.infoHash) {
@@ -20,7 +20,7 @@ function testFilterOption (t, serverType) {
   }
 
   common.createServer(t, opts, function (server, announceUrl) {
-    var client1 = new Client({
+    const client1 = new Client({
       infoHash: fixtures.alice.parsedTorrent.infoHash,
       announce: announceUrl,
       peerId,
@@ -37,7 +37,7 @@ function testFilterOption (t, serverType) {
       client1.destroy(function () {
         t.pass('client1 destroyed')
 
-        var client2 = new Client({
+        const client2 = new Client({
           infoHash: fixtures.leaves.parsedTorrent.infoHash,
           announce: announceUrl,
           peerId,
@@ -88,7 +88,7 @@ test('ws: filter option blocks tracker from tracking torrent', function (t) {
 function testFilterCustomError (t, serverType) {
   t.plan(8)
 
-  var opts = { serverType } // this is test-suite-only option
+  const opts = { serverType } // this is test-suite-only option
   opts.filter = function (infoHash, params, cb) {
     process.nextTick(function () {
       if (infoHash === fixtures.alice.parsedTorrent.infoHash) {
@@ -100,7 +100,7 @@ function testFilterCustomError (t, serverType) {
   }
 
   common.createServer(t, opts, function (server, announceUrl) {
-    var client1 = new Client({
+    const client1 = new Client({
       infoHash: fixtures.alice.parsedTorrent.infoHash,
       announce: announceUrl,
       peerId,
@@ -116,7 +116,7 @@ function testFilterCustomError (t, serverType) {
 
       client1.destroy(function () {
         t.pass('client1 destroyed')
-        var client2 = new Client({
+        const client2 = new Client({
           infoHash: fixtures.leaves.parsedTorrent.infoHash,
           announce: announceUrl,
           peerId,

test/querystring.js

@@ -1,12 +1,12 @@
-var common = require('../lib/common')
+const common = require('../lib/common')
-var test = require('tape')
+const test = require('tape')
 
 // https://github.com/webtorrent/webtorrent/issues/196
 test('encode special chars +* in http tracker urls', function (t) {
-  var q = Object.create(null)
+  const q = Object.create(null)
   q.info_hash = Buffer.from('a2a15537542b22925ad10486bf7a8b2a9c42f0d1', 'hex').toString('binary')
 
-  var encoded = 'info_hash=%A2%A1U7T%2B%22%92Z%D1%04%86%BFz%8B%2A%9CB%F0%D1'
+  const encoded = 'info_hash=%A2%A1U7T%2B%22%92Z%D1%04%86%BFz%8B%2A%9CB%F0%D1'
   t.equal(common.querystringStringify(q), encoded)
 
   // sanity check that encode-decode matches up

test/request-handler.js

@@ -1,15 +1,15 @@
-var Client = require('../')
+const Client = require('../')
-var common = require('./common')
+const common = require('./common')
-var fixtures = require('webtorrent-fixtures')
+const fixtures = require('webtorrent-fixtures')
-var test = require('tape')
+const test = require('tape')
-var Server = require('../server')
+const Server = require('../server')
 
-var peerId = Buffer.from('01234567890123456789')
+const peerId = Buffer.from('01234567890123456789')
 
 function testRequestHandler (t, serverType) {
   t.plan(5)
 
-  var opts = { serverType } // this is test-suite-only option
+  const opts = { serverType } // this is test-suite-only option
 
   class Swarm extends Server.Swarm {
     announce (params, cb) {
@@ -23,14 +23,14 @@ function testRequestHandler (t, serverType) {
   }
 
   // Use a custom Swarm implementation for this test only
-  var OldSwarm = Server.Swarm
+  const OldSwarm = Server.Swarm
   Server.Swarm = Swarm
   t.on('end', function () {
     Server.Swarm = OldSwarm
   })
 
   common.createServer(t, opts, function (server, announceUrl) {
-    var client1 = new Client({
+    const client1 = new Client({
       infoHash: fixtures.alice.parsedTorrent.infoHash,
       announce: announceUrl,
       peerId,

test/scrape.js

@@ -1,17 +1,17 @@
-var bencode = require('bencode')
+const bencode = require('bencode')
-var Client = require('../')
+const Client = require('../')
-var common = require('./common')
+const common = require('./common')
-var commonLib = require('../lib/common')
+const commonLib = require('../lib/common')
-var commonTest = require('./common')
+const commonTest = require('./common')
-var fixtures = require('webtorrent-fixtures')
+const fixtures = require('webtorrent-fixtures')
-var get = require('simple-get')
+const get = require('simple-get')
-var test = require('tape')
+const test = require('tape')
 
-var peerId = Buffer.from('01234567890123456789')
+const peerId = Buffer.from('01234567890123456789')
 
 function testSingle (t, serverType) {
   commonTest.createServer(t, serverType, function (server, announceUrl) {
-    var client = new Client({
+    const client = new Client({
       infoHash: fixtures.leaves.parsedTorrent.infoHash,
       announce: announceUrl,
       peerId,
@@ -53,7 +53,7 @@ test('ws: single info_hash scrape', function (t) {
 
 function clientScrapeStatic (t, serverType) {
   commonTest.createServer(t, serverType, function (server, announceUrl) {
-    var client = Client.scrape({
+    const client = Client.scrape({
       announce: announceUrl,
       infoHash: fixtures.leaves.parsedTorrent.infoHash,
       wrtc: {}
@@ -86,10 +86,10 @@ test('ws: scrape using Client.scrape static method', function (t) {
 
 // Ensure the callback function gets called when an invalid url is passed
 function clientScrapeStaticInvalid (t, serverType) {
-  var announceUrl = serverType + '://invalid.lol'
+  let announceUrl = serverType + '://invalid.lol'
   if (serverType === 'http') announceUrl += '/announce'
 
-  var client = Client.scrape({
+  const client = Client.scrape({
     announce: announceUrl,
     infoHash: fixtures.leaves.parsedTorrent.infoHash,
     wrtc: {}
@@ -113,8 +113,8 @@ test('ws: scrape using Client.scrape static method (invalid url)', function (t)
 })
 
 function clientScrapeMulti (t, serverType) {
-  var infoHash1 = fixtures.leaves.parsedTorrent.infoHash
+  const infoHash1 = fixtures.leaves.parsedTorrent.infoHash
-  var infoHash2 = fixtures.alice.parsedTorrent.infoHash
+  const infoHash2 = fixtures.alice.parsedTorrent.infoHash
 
   commonTest.createServer(t, serverType, function (server, announceUrl) {
     Client.scrape({
@@ -153,13 +153,13 @@ test('udp: MULTI scrape using Client.scrape static method', function (t) {
 test('server: multiple info_hash scrape (manual http request)', function (t) {
   t.plan(13)
 
-  var binaryInfoHash1 = commonLib.hexToBinary(fixtures.leaves.parsedTorrent.infoHash)
+  const binaryInfoHash1 = commonLib.hexToBinary(fixtures.leaves.parsedTorrent.infoHash)
-  var binaryInfoHash2 = commonLib.hexToBinary(fixtures.alice.parsedTorrent.infoHash)
+  const binaryInfoHash2 = commonLib.hexToBinary(fixtures.alice.parsedTorrent.infoHash)
 
   commonTest.createServer(t, 'http', function (server, announceUrl) {
-    var scrapeUrl = announceUrl.replace('/announce', '/scrape')
+    const scrapeUrl = announceUrl.replace('/announce', '/scrape')
 
-    var url = scrapeUrl + '?' + commonLib.querystringStringify({
+    const url = scrapeUrl + '?' + commonLib.querystringStringify({
       info_hash: [binaryInfoHash1, binaryInfoHash2]
     })
 
@@ -190,13 +190,13 @@ test('server: multiple info_hash scrape (manual http request)', function (t) {
 test('server: all info_hash scrape (manual http request)', function (t) {
   t.plan(10)
 
-  var binaryInfoHash = commonLib.hexToBinary(fixtures.leaves.parsedTorrent.infoHash)
+  const binaryInfoHash = commonLib.hexToBinary(fixtures.leaves.parsedTorrent.infoHash)
 
   commonTest.createServer(t, 'http', function (server, announceUrl) {
-    var scrapeUrl = announceUrl.replace('/announce', '/scrape')
+    const scrapeUrl = announceUrl.replace('/announce', '/scrape')
 
     // announce a torrent to the tracker
-    var client = new Client({
+    const client = new Client({
       infoHash: fixtures.leaves.parsedTorrent.infoHash,
       announce: announceUrl,
       peerId,

test/server.js

@@ -1,34 +1,34 @@
-var Client = require('../')
+const Client = require('../')
-var common = require('./common')
+const common = require('./common')
-var test = require('tape')
+const test = require('tape')
-var wrtc = require('wrtc')
+const wrtc = require('wrtc')
 
-var infoHash = '4cb67059ed6bd08362da625b3ae77f6f4a075705'
+const infoHash = '4cb67059ed6bd08362da625b3ae77f6f4a075705'
-var peerId = Buffer.from('01234567890123456789')
+const peerId = Buffer.from('01234567890123456789')
-var peerId2 = Buffer.from('12345678901234567890')
+const peerId2 = Buffer.from('12345678901234567890')
-var peerId3 = Buffer.from('23456789012345678901')
+const peerId3 = Buffer.from('23456789012345678901')
 
 function serverTest (t, serverType, serverFamily) {
   t.plan(40)
 
-  var hostname = serverFamily === 'inet6'
+  const hostname = serverFamily === 'inet6'
     ? '[::1]'
     : '127.0.0.1'
-  var clientIp = serverFamily === 'inet6'
+  const clientIp = serverFamily === 'inet6'
     ? '::1'
     : '127.0.0.1'
 
-  var opts = {
+  const opts = {
     serverType
   }
 
   common.createServer(t, opts, function (server) {
     // Not using announceUrl param from `common.createServer()` since we
     // want to control IPv4 vs IPv6.
-    var port = server[serverType].address().port
+    const port = server[serverType].address().port
-    var announceUrl = serverType + '://' + hostname + ':' + port + '/announce'
+    const announceUrl = serverType + '://' + hostname + ':' + port + '/announce'
 
-    var client1 = new Client({
+    const client1 = new Client({
       infoHash,
       announce: [announceUrl],
       peerId,
@@ -56,11 +56,11 @@ function serverTest (t, serverType, serverFamily) {
         t.equal(swarm.incomplete, 1)
         t.equal(swarm.peers.length, 1)
 
-        var id = serverType === 'ws'
+        const id = serverType === 'ws'
           ? peerId.toString('hex')
           : hostname + ':6881'
 
-        var peer = swarm.peers.peek(id)
+        const peer = swarm.peers.peek(id)
         t.equal(peer.type, serverType)
         t.equal(peer.ip, clientIp)
         t.equal(peer.peerId, peerId.toString('hex'))
@@ -88,7 +88,7 @@ function serverTest (t, serverType, serverFamily) {
             t.equal(data.incomplete, 0)
             t.equal(typeof data.downloaded, 'number')
 
-            var client2 = new Client({
+            const client2 = new Client({
               infoHash,
               announce: [announceUrl],
               peerId: peerId2,
@@ -108,7 +108,7 @@ function serverTest (t, serverType, serverFamily) {
               t.equal(data.complete, 1)
               t.equal(data.incomplete, 1)
 
-              var client3 = new Client({
+              const client3 = new Client({
                 infoHash,
                 announce: [announceUrl],
                 peerId: peerId3,

test/stats.js

@@ -1,24 +1,24 @@
-var Client = require('../')
+const Client = require('../')
-var commonTest = require('./common')
+const commonTest = require('./common')
-var fixtures = require('webtorrent-fixtures')
+const fixtures = require('webtorrent-fixtures')
-var get = require('simple-get')
+const get = require('simple-get')
-var test = require('tape')
+const test = require('tape')
 
-var peerId = Buffer.from('-WW0091-4ea5886ce160')
+const peerId = Buffer.from('-WW0091-4ea5886ce160')
-var unknownPeerId = Buffer.from('01234567890123456789')
+const unknownPeerId = Buffer.from('01234567890123456789')
 
 function parseHtml (html) {
-  var extractValue = /[^v^h](\d+)/
+  const extractValue = /[^v^h](\d+)/
-  var array = html.replace('torrents', '\n').split('\n').filter(function (line) {
+  const array = html.replace('torrents', '\n').split('\n').filter(function (line) {
     return line && line.trim().length > 0
   }).map(function (line) {
-    var a = extractValue.exec(line)
+    const a = extractValue.exec(line)
     if (a) {
       return parseInt(a[1])
     }
     return null
   })
-  var i = 0
+  let i = 0
   return {
     torrents: array[i++],
     activeTorrents: array[i++],
@@ -35,12 +35,12 @@ test('server: get empty stats', function (t) {
   t.plan(11)
 
   commonTest.createServer(t, 'http', function (server, announceUrl) {
-    var url = announceUrl.replace('/announce', '/stats')
+    const url = announceUrl.replace('/announce', '/stats')
 
     get.concat(url, function (err, res, data) {
       t.error(err)
 
-      var stats = parseHtml(data.toString())
+      const stats = parseHtml(data.toString())
       t.equal(res.statusCode, 200)
       t.equal(stats.torrents, 0)
       t.equal(stats.activeTorrents, 0)
@@ -60,7 +60,7 @@ test('server: get empty stats with json header', function (t) {
   t.plan(11)
 
   commonTest.createServer(t, 'http', function (server, announceUrl) {
-    var opts = {
+    const opts = {
       url: announceUrl.replace('/announce', '/stats'),
       headers: {
         accept: 'application/json'
@@ -90,7 +90,7 @@ test('server: get empty stats on stats.json', function (t) {
   t.plan(11)
 
   commonTest.createServer(t, 'http', function (server, announceUrl) {
-    var opts = {
+    const opts = {
       url: announceUrl.replace('/announce', '/stats.json'),
       json: true
     }
@@ -118,7 +118,7 @@ test('server: get leecher stats.json', function (t) {
 
   commonTest.createServer(t, 'http', function (server, announceUrl) {
     // announce a torrent to the tracker
-    var client = new Client({
+    const client = new Client({
       infoHash: fixtures.leaves.parsedTorrent.infoHash,
       announce: announceUrl,
       peerId,
@@ -130,7 +130,7 @@ test('server: get leecher stats.json', function (t) {
     client.start()
 
     server.once('start', function () {
-      var opts = {
+      const opts = {
         url: announceUrl.replace('/announce', '/stats.json'),
         json: true
       }
@@ -159,7 +159,7 @@ test('server: get leecher stats.json (unknown peerId)', function (t) {
 
   commonTest.createServer(t, 'http', function (server, announceUrl) {
     // announce a torrent to the tracker
-    var client = new Client({
+    const client = new Client({
       infoHash: fixtures.leaves.parsedTorrent.infoHash,
       announce: announceUrl,
       peerId: unknownPeerId,
@@ -171,7 +171,7 @@ test('server: get leecher stats.json (unknown peerId)', function (t) {
     client.start()
 
     server.once('start', function () {
-      var opts = {
+      const opts = {
         url: announceUrl.replace('/announce', '/stats.json'),
         json: true
       }