Enable uTP

Fixes: https://github.com/webtorrent/webtorrent-desktop/issues/1896

.gitignore

@@ -2,6 +2,7 @@ node_modules/
 build/
 dist/
 npm-debug.log*
+.vscode/
 
 # JetBrains IntelliJ IDEA project files
 .idea

.travis.yml

@@ -1,3 +1,5 @@
 language: node_js
 node_js:
   - lts/*
+cache:
+  npm: false

CHANGELOG.md

@@ -19,7 +19,7 @@
 
 ## v0.23.0 - 2020-07-15
 
-🔒 This release contains a critical security fix. Please update as soon as possible.
+🔒 This release contains a critical security fix. Please update as soon as possible. [\#1837](https://github.com/webtorrent/webtorrent-desktop/issues/1837#issuecomment-729320901)
 
 ### Added
 

RELEASE_PROCESS.md

@@ -74,17 +74,29 @@
 
 **This is the most important part.**
 
- - Manually download the binaries for each platform from Github.
+- Manually download the binaries for each platform from Github.
 
   **Do not use your locally built binaries.** Modern OSs treat executables differently if they've
   been downloaded, even though the files are byte for byte identical. This ensures that the
   codesigning worked and is valid.
 
-- Smoke test WebTorrent Desktop on each platform.
+- Smoke test WebTorrent Desktop on each platform. Before a release, check that the following basic use cases work correctly:
 
-  See Smoke Tests below for details. Open DevTools
-  on Windows and Mac, and ensure that the auto updater is running. If the auto updater does not
-  run, users will successfully auto update to this new version, and then be stuck there forever.
+  1. Click "Play" to stream a built-in torrent (e.g. Sintel)
+    - Ensure that seeking to undownloaded region works and plays immediately.
+    - Ensure that sintel.mp4 gets downloaded to `~/Downloads`.
+
+  2. Check that the auto-updater works
+    - Open the console and check for the line "No update available" to indicate that the auto-updater is working. (If the auto updater does not run, users will successfully auto update to this new version, and then be stuck there forever.)
+
+  3. Add a new .torrent file via drag-and-drop.
+    - Ensure that it gets added to the list and starts downloading.
+
+  4. Remove a torrent from the client
+    - Ensure that the file is removed from `~/Downloads`
+
+  5. Create and seed a new a torrent via drag-and-drop.
+    - Ensure that the torrent gets created and seeding begins.
 
 ### 4. Ship it
 
@@ -93,25 +105,5 @@
   Create a pull request in [webtorrent.io](https://github.com/webtorrent/webtorrent.io). Update
   `config.js`, updating the desktop app version.
 
-  As soon as this PR is merged, Jenkins will automatically redeploy the WebTorrent website, and
+  Once this PR is merged and Feross redeploys the WebTorrent website,
   hundreds of thousands of users around the world will start auto updating. **Merge with care.**
-
-## Smoke Tests
-
-Before a release, check that the following basic use cases work correctly:
-
-1. Click "Play" to stream a built-in torrent (e.g. Sintel)
-  - Ensure that seeking to undownloaded region works and plays immediately.
-  - Ensure that sintel.mp4 gets downloaded to `~/Downloads`.
-
-2. Check that the auto-updater works
-  - Open the console and check for the line "No update available" to indicate that the auto-updater is working.
-
-3. Add a new .torrent file via drag-and-drop.
-  - Ensure that it gets added to the list and starts downloading.
-
-4. Remove a torrent from the client
-  - Ensure that the file is removed from `~/Downloads`
-
-5. Create and seed a new a torrent via drag-and-drop.
-  - Ensure that the torrent gets created and seeding begins.

bin/extra-lint.js

@@ -1,39 +0,0 @@
-#!/usr/bin/env node
-
-const walkSync = require('walk-sync')
-const fs = require('fs')
-const path = require('path')
-
-let hasErrors = false
-
-// Find all Javascript source files
-const files = walkSync('src', { globs: ['**/*.js'] })
-console.log('Running extra-lint on ' + files.length + ' files...')
-
-// Read each file, line by line
-files.forEach(function (file) {
-  const filepath = path.join('src', file)
-  const lines = fs.readFileSync(filepath, 'utf8').split('\n')
-
-  lines.forEach(function (line, i) {
-    let error
-
-    // No lines over 100 characters
-    if (line.length > 100) {
-      error = 'Line >100 chars'
-    }
-
-    if (line.match(/^var /) || line.match(/ var /)) {
-      error = 'Use const or let'
-    }
-
-    if (error) {
-      const name = path.basename(file)
-      console.log('%s:%d - %s:\n%s', name, i + 1, error, line)
-      hasErrors = true
-    }
-  })
-})
-
-if (hasErrors) process.exit(1)
-else console.log('Looks good!')

bin/package.js

@@ -545,7 +545,17 @@ function buildLinux (cb) {
       },
       categories: ['Network', 'FileTransfer', 'P2P'],
       mimeType: ['application/x-bittorrent', 'x-scheme-handler/magnet', 'x-scheme-handler/stream-magnet'],
-      desktopTemplate: path.join(config.STATIC_PATH, 'linux/webtorrent-desktop.ejs')
+      desktopTemplate: path.join(config.STATIC_PATH, 'linux/webtorrent-desktop.ejs'),
+      lintianOverrides: [
+        'unstripped-binary-or-object',
+        'embedded-library',
+        'missing-dependency-on-libc',
+        'changelog-file-missing-in-native-package',
+        'description-synopsis-is-duplicated',
+        'setuid-binary',
+        'binary-without-manpage',
+        'shlib-with-executable-bit'
+      ]
     }
 
     installer(options).then(

package.json

@@ -7,66 +7,77 @@
     "email": "feross@webtorrent.io",
     "url": "https://webtorrent.io"
   },
+  "babel": {
+    "plugins": [
+      [
+        "@babel/plugin-transform-react-jsx",
+        {
+          "useBuiltIns": true
+        }
+      ]
+    ]
+  },
   "bugs": {
     "url": "https://github.com/webtorrent/webtorrent-desktop/issues"
   },
   "dependencies": {
     "airplayer": "github:webtorrent/airplayer#fix-security",
     "application-config": "^2.0.0",
-    "arch": "^2.1.2",
+    "arch": "^2.2.0",
     "auto-launch": "^5.0.5",
-    "bitfield": "^3.0.0",
+    "bitfield": "^4.0.0",
     "capture-frame": "^4.0.0",
-    "chokidar": "^3.4.2",
+    "chokidar": "^3.4.3",
     "chromecasts": "^1.9.1",
     "create-torrent": "^4.4.2",
     "debounce": "^1.2.0",
     "dlnacasts": "^0.1.0",
-    "drag-drop": "^6.0.2",
+    "drag-drop": "^6.1.0",
     "es6-error": "^4.1.1",
     "fn-getter": "^1.0.0",
     "iso-639-1": "^2.1.4",
     "languagedetect": "^2.0.0",
     "location-history": "^1.1.2",
     "material-ui": "^0.20.2",
-    "music-metadata": "^7.0.2",
+    "music-metadata": "^7.5.0",
     "network-address": "^1.1.2",
-    "parse-torrent": "^7.1.3",
+    "parse-torrent": "^9.1.0",
     "prettier-bytes": "^1.0.4",
     "prop-types": "^15.7.2",
-    "react": "^16.13.1",
-    "react-dom": "^16.13.1",
+    "react": "^17.0.1",
+    "react-dom": "^17.0.1",
     "rimraf": "^3.0.2",
-    "run-parallel": "^1.1.9",
+    "run-parallel": "^1.1.10",
     "semver": "^7.3.2",
     "simple-concat": "^1.0.1",
     "simple-get": "^4.0.0",
     "srt-to-vtt": "^1.1.3",
     "vlc-command": "^1.2.0",
-    "webtorrent": ">=0.108.6",
+    "webtorrent": ">=0.111.0",
     "winreg": "^1.2.4"
   },
   "devDependencies": {
-    "babel-eslint": "^10.1.0",
-    "buble": "^0.20.0",
-    "cross-zip": "^3.1.0",
-    "depcheck": "^1.2.0",
-    "electron": "~10.1.0",
+    "@babel/cli": "^7.12.8",
+    "@babel/core": "^7.12.9",
+    "@babel/eslint-parser": "^7.12.1",
+    "@babel/plugin-transform-react-jsx": "^7.12.7",
+    "cross-zip": "^4.0.0",
+    "depcheck": "^1.3.1",
+    "electron": "~11.0.3",
     "electron-notarize": "^1.0.0",
-    "electron-osx-sign": "^0.4.17",
+    "electron-osx-sign": "^0.5.0",
     "electron-packager": "^15.1.0",
     "electron-winstaller": "^4.0.1",
-    "gh-release": "^3.5.0",
+    "gh-release": "^4.0.3",
     "minimist": "^1.2.5",
-    "nodemon": "^2.0.4",
-    "open": "^7.2.1",
+    "nodemon": "^2.0.6",
+    "open": "^7.3.0",
     "plist": "^3.0.1",
-    "pngjs": "^5.0.0",
-    "run-series": "^1.1.8",
-    "spectron": "~11.1.0",
+    "pngjs": "^6.0.0",
+    "run-series": "^1.1.9",
+    "spectron": "~12.0.0",
     "standard": "*",
-    "tape": "^5.0.1",
-    "walk-sync": "^2.2.0"
+    "tape": "^5.0.1"
   },
   "engines": {
     "node": ">=4.0.0"
@@ -96,19 +107,19 @@
     "url": "git://github.com/webtorrent/webtorrent-desktop.git"
   },
   "scripts": {
-    "build": "buble src --target chrome:71 --output build",
+    "build": "babel src --out-dir build",
     "clean": "node ./bin/clean.js",
     "gh-release": "gh-release",
     "install-system-deps": "brew install fakeroot dpkg rpm",
     "open-config": "node ./bin/open-config.js",
     "package": "node ./bin/package.js",
     "start": "npm run build && electron --no-sandbox .",
-    "test": "standard && depcheck --ignores=standard,babel-eslint --ignore-dirs=build,dist && node ./bin/extra-lint.js",
+    "test": "standard && depcheck --ignores=standard,@babel/eslint-parser --ignore-dirs=build,dist",
     "test-integration": "npm run build && node ./test",
     "update-authors": "./bin/update-authors.sh",
     "watch": "nodemon --exec \"npm run start\" --ext js,css --ignore build/ --ignore dist/"
   },
   "standard": {
-    "parser": "babel-eslint"
+    "parser": "@babel/eslint-parser"
   }
 }

src/config.js

@@ -1,6 +1,6 @@
 const appConfig = require('application-config')('WebTorrent')
 const path = require('path')
-const electron = require('electron')
+const { app, remote } = require('electron')
 const arch = require('arch')
 
 const APP_NAME = 'WebTorrent'
@@ -126,10 +126,10 @@ function getPath (key) {
     return ''
   } else if (process.type === 'renderer') {
     // Electron renderer process
-    return electron.remote.app.getPath(key)
+    return remote.app.getPath(key)
   } else {
     // Electron main process
-    return electron.app.getPath(key)
+    return app.getPath(key)
   }
 }
 

src/crash-reporter.js

@@ -4,9 +4,9 @@ module.exports = {
 
 function init () {
   const config = require('./config')
-  const electron = require('electron')
+  const { crashReporter } = require('electron')
 
-  electron.crashReporter.start({
+  crashReporter.start({
     productName: config.APP_NAME,
     submitURL: config.CRASH_REPORT_URL,
     globalExtra: { _companyName: config.APP_NAME },

src/main/announcement.js

@@ -2,7 +2,7 @@ module.exports = {
   init
 }
 
-const electron = require('electron')
+const { dialog } = require('electron')
 
 const config = require('../config')
 const log = require('./log')
@@ -44,7 +44,7 @@ function onResponse (err, res, data) {
     }
   }
 
-  electron.dialog.showMessageBox({
+  dialog.showMessageBox({
     type: 'info',
     buttons: ['OK'],
     title: data.title,

src/main/dialog.js

@@ -6,7 +6,7 @@ module.exports = {
   openFiles
 }
 
-const electron = require('electron')
+const { dialog } = require('electron')
 
 const log = require('./log')
 const windows = require('./windows')
@@ -34,13 +34,13 @@ function openSeedDirectory () {
   log('openSeedDirectory')
   const opts = process.platform === 'darwin'
     ? {
-      title: 'Select a file or folder for the torrent.',
-      properties: ['openFile', 'openDirectory']
-    }
+        title: 'Select a file or folder for the torrent.',
+        properties: ['openFile', 'openDirectory']
+      }
     : {
-      title: 'Select a folder for the torrent.',
-      properties: ['openDirectory']
-    }
+        title: 'Select a folder for the torrent.',
+        properties: ['openDirectory']
+      }
   showOpenSeed(opts)
 }
 
@@ -53,15 +53,15 @@ function openFiles () {
   log('openFiles')
   const opts = process.platform === 'darwin'
     ? {
-      title: 'Select a file or folder to add.',
-      properties: ['openFile', 'openDirectory']
-    }
+        title: 'Select a file or folder to add.',
+        properties: ['openFile', 'openDirectory']
+      }
     : {
-      title: 'Select a file to add.',
-      properties: ['openFile']
-    }
+        title: 'Select a file to add.',
+        properties: ['openFile']
+      }
   setTitle(opts.title)
-  const selectedPaths = electron.dialog.showOpenDialogSync(windows.main.win, opts)
+  const selectedPaths = dialog.showOpenDialogSync(windows.main.win, opts)
   resetTitle()
   if (!Array.isArray(selectedPaths)) return
   windows.main.dispatch('onOpen', selectedPaths)
@@ -79,7 +79,7 @@ function openTorrentFile () {
     properties: ['openFile', 'multiSelections']
   }
   setTitle(opts.title)
-  const selectedPaths = electron.dialog.showOpenDialogSync(windows.main.win, opts)
+  const selectedPaths = dialog.showOpenDialogSync(windows.main.win, opts)
   resetTitle()
   if (!Array.isArray(selectedPaths)) return
   selectedPaths.forEach(function (selectedPath) {
@@ -114,7 +114,7 @@ function resetTitle () {
  */
 function showOpenSeed (opts) {
   setTitle(opts.title)
-  const selectedPaths = electron.dialog.showOpenDialogSync(windows.main.win, opts)
+  const selectedPaths = dialog.showOpenDialogSync(windows.main.win, opts)
   resetTitle()
   if (!Array.isArray(selectedPaths)) return
   windows.main.dispatch('showCreateTorrent', selectedPaths)

src/main/handlers.js

@@ -25,8 +25,7 @@ function uninstall () {
 }
 
 function installDarwin () {
-  const electron = require('electron')
-  const app = electron.app
+  const { app } = require('electron')
 
   // On Mac, only protocols that are listed in `Info.plist` can be set as the
   // default handler at runtime.

src/main/index.js

@@ -1,7 +1,6 @@
 console.time('init')
 
-const electron = require('electron')
-const app = electron.app
+const { app, ipcMain } = require('electron')
 
 // Start crash reporter early, so it takes effect for child processes
 const crashReporter = require('../crash-reporter')
@@ -67,8 +66,6 @@ function init () {
     app.setPath('temp', path.join(config.CONFIG_PATH, 'Temp'))
   }
 
-  const ipcMain = electron.ipcMain
-
   let isReady = false // app ready, windows can be created
   app.ipcReady = false // main window has finished loading and IPC is ready
   app.isQuitting = false
@@ -198,9 +195,13 @@ function onAppOpen (newArgv) {
 // Development: 2 args, eg: electron .
 // Test: 4 args, eg: electron -r .../mocks.js .
 function sliceArgv (argv) {
-  return argv.slice(config.IS_PRODUCTION ? 1
-    : config.IS_TEST ? 4
-      : 2)
+  return argv.slice(
+    config.IS_PRODUCTION
+      ? 1
+      : config.IS_TEST
+        ? 4
+        : 2
+  )
 }
 
 function processArgv (argv) {

src/main/ipc.js

@@ -3,9 +3,7 @@ module.exports = {
   setModule
 }
 
-const electron = require('electron')
-
-const app = electron.app
+const { app, ipcMain } = require('electron')
 
 const log = require('./log')
 const menu = require('./menu')
@@ -23,14 +21,12 @@ function setModule (name, module) {
 }
 
 function init () {
-  const ipc = electron.ipcMain
-
-  ipc.once('ipcReady', function (e) {
+  ipcMain.once('ipcReady', function (e) {
     app.ipcReady = true
     app.emit('ipcReady')
   })
 
-  ipc.once('ipcReadyWebTorrent', function (e) {
+  ipcMain.once('ipcReadyWebTorrent', function (e) {
     app.ipcReadyWebTorrent = true
     log('sending %d queued messages from the main win to the webtorrent window',
       messageQueueMainToWebTorrent.length)
@@ -44,11 +40,11 @@ function init () {
    * Dialog
    */
 
-  ipc.on('openTorrentFile', () => {
+  ipcMain.on('openTorrentFile', () => {
     const dialog = require('./dialog')
     dialog.openTorrentFile()
   })
-  ipc.on('openFiles', () => {
+  ipcMain.on('openFiles', () => {
     const dialog = require('./dialog')
     dialog.openFiles()
   })
@@ -57,11 +53,11 @@ function init () {
    * Dock
    */
 
-  ipc.on('setBadge', (e, ...args) => {
+  ipcMain.on('setBadge', (e, ...args) => {
     const dock = require('./dock')
     dock.setBadge(...args)
   })
-  ipc.on('downloadFinished', (e, ...args) => {
+  ipcMain.on('downloadFinished', (e, ...args) => {
     const dock = require('./dock')
     dock.downloadFinished(...args)
   })
@@ -70,7 +66,7 @@ function init () {
    * Player Events
    */
 
-  ipc.on('onPlayerOpen', function () {
+  ipcMain.on('onPlayerOpen', function () {
     const powerSaveBlocker = require('./power-save-blocker')
     const shortcuts = require('./shortcuts')
     const thumbar = require('./thumbar')
@@ -81,14 +77,14 @@ function init () {
     thumbar.enable()
   })
 
-  ipc.on('onPlayerUpdate', function (e, ...args) {
+  ipcMain.on('onPlayerUpdate', function (e, ...args) {
     const thumbar = require('./thumbar')
 
     menu.onPlayerUpdate(...args)
     thumbar.onPlayerUpdate(...args)
   })
 
-  ipc.on('onPlayerClose', function () {
+  ipcMain.on('onPlayerClose', function () {
     const powerSaveBlocker = require('./power-save-blocker')
     const shortcuts = require('./shortcuts')
     const thumbar = require('./thumbar')
@@ -99,7 +95,7 @@ function init () {
     thumbar.disable()
   })
 
-  ipc.on('onPlayerPlay', function () {
+  ipcMain.on('onPlayerPlay', function () {
     const powerSaveBlocker = require('./power-save-blocker')
     const thumbar = require('./thumbar')
 
@@ -107,7 +103,7 @@ function init () {
     thumbar.onPlayerPlay()
   })
 
-  ipc.on('onPlayerPause', function () {
+  ipcMain.on('onPlayerPause', function () {
     const powerSaveBlocker = require('./power-save-blocker')
     const thumbar = require('./thumbar')
 
@@ -119,7 +115,7 @@ function init () {
    * Folder Watcher Events
    */
 
-  ipc.on('startFolderWatcher', function () {
+  ipcMain.on('startFolderWatcher', function () {
     if (!modules.folderWatcher) {
       log('IPC ERR: folderWatcher module is not defined.')
       return
@@ -128,7 +124,7 @@ function init () {
     modules.folderWatcher.start()
   })
 
-  ipc.on('stopFolderWatcher', function () {
+  ipcMain.on('stopFolderWatcher', function () {
     if (!modules.folderWatcher) {
       log('IPC ERR: folderWatcher module is not defined.')
       return
@@ -141,15 +137,15 @@ function init () {
    * Shell
    */
 
-  ipc.on('openPath', (e, ...args) => {
+  ipcMain.on('openPath', (e, ...args) => {
     const shell = require('./shell')
     shell.openPath(...args)
   })
-  ipc.on('showItemInFolder', (e, ...args) => {
+  ipcMain.on('showItemInFolder', (e, ...args) => {
     const shell = require('./shell')
     shell.showItemInFolder(...args)
   })
-  ipc.on('moveItemToTrash', (e, ...args) => {
+  ipcMain.on('moveItemToTrash', (e, ...args) => {
     const shell = require('./shell')
     shell.moveItemToTrash(...args)
   })
@@ -158,7 +154,7 @@ function init () {
    * File handlers
    */
 
-  ipc.on('setDefaultFileHandler', (e, flag) => {
+  ipcMain.on('setDefaultFileHandler', (e, flag) => {
     const handlers = require('./handlers')
 
     if (flag) handlers.install()
@@ -169,7 +165,7 @@ function init () {
    * Auto start on login
    */
 
-  ipc.on('setStartup', (e, flag) => {
+  ipcMain.on('setStartup', (e, flag) => {
     const startup = require('./startup')
 
     if (flag) startup.install()
@@ -182,19 +178,19 @@ function init () {
 
   const main = windows.main
 
-  ipc.on('setAspectRatio', (e, ...args) => main.setAspectRatio(...args))
-  ipc.on('setBounds', (e, ...args) => main.setBounds(...args))
-  ipc.on('setProgress', (e, ...args) => main.setProgress(...args))
-  ipc.on('setTitle', (e, ...args) => main.setTitle(...args))
-  ipc.on('show', () => main.show())
-  ipc.on('toggleFullScreen', (e, ...args) => main.toggleFullScreen(...args))
-  ipc.on('setAllowNav', (e, ...args) => menu.setAllowNav(...args))
+  ipcMain.on('setAspectRatio', (e, ...args) => main.setAspectRatio(...args))
+  ipcMain.on('setBounds', (e, ...args) => main.setBounds(...args))
+  ipcMain.on('setProgress', (e, ...args) => main.setProgress(...args))
+  ipcMain.on('setTitle', (e, ...args) => main.setTitle(...args))
+  ipcMain.on('show', () => main.show())
+  ipcMain.on('toggleFullScreen', (e, ...args) => main.toggleFullScreen(...args))
+  ipcMain.on('setAllowNav', (e, ...args) => menu.setAllowNav(...args))
 
   /**
    * External Media Player
    */
 
-  ipc.on('checkForExternalPlayer', function (e, path) {
+  ipcMain.on('checkForExternalPlayer', function (e, path) {
     const externalPlayer = require('./external-player')
 
     externalPlayer.checkInstall(path, function (err) {
@@ -202,7 +198,7 @@ function init () {
     })
   })
 
-  ipc.on('openExternalPlayer', (e, ...args) => {
+  ipcMain.on('openExternalPlayer', (e, ...args) => {
     const externalPlayer = require('./external-player')
     const thumbar = require('./thumbar')
 
@@ -211,7 +207,7 @@ function init () {
     externalPlayer.spawn(...args)
   })
 
-  ipc.on('quitExternalPlayer', () => {
+  ipcMain.on('quitExternalPlayer', () => {
     const externalPlayer = require('./external-player')
     externalPlayer.kill()
   })
@@ -220,8 +216,8 @@ function init () {
    * Message passing
    */
 
-  const oldEmit = ipc.emit
-  ipc.emit = function (name, e, ...args) {
+  const oldEmit = ipcMain.emit
+  ipcMain.emit = function (name, e, ...args) {
     // Relay messages between the main window and the WebTorrent hidden window
     if (name.startsWith('wt-') && !app.isQuitting) {
       if (e.sender.browserWindowOptions.title === 'webtorrent-hidden-window') {
@@ -244,6 +240,6 @@ function init () {
     }
 
     // Emit all other events normally
-    oldEmit.call(ipc, name, e, ...args)
+    oldEmit.call(ipcMain, name, e, ...args)
   }
 }

src/main/log.js

@@ -8,11 +8,9 @@ module.exports.error = error
  * where they can be viewed in Developer Tools.
  */
 
-const electron = require('electron')
+const { app } = require('electron')
 const windows = require('./windows')
 
-const app = electron.app
-
 function log (...args) {
   if (app.ipcReady) {
     windows.main.send('log', ...args)

src/main/menu.js

@@ -8,9 +8,7 @@ module.exports = {
   onToggleFullScreen
 }
 
-const electron = require('electron')
-
-const app = electron.app
+const { app, Menu } = require('electron')
 
 const config = require('../config')
 const windows = require('./windows')
@@ -18,8 +16,8 @@ const windows = require('./windows')
 let menu = null
 
 function init () {
-  menu = electron.Menu.buildFromTemplate(getMenuTemplate())
-  electron.Menu.setApplicationMenu(menu)
+  menu = Menu.buildFromTemplate(getMenuTemplate())
+  Menu.setApplicationMenu(menu)
 }
 
 function togglePlaybackControls (flag) {

src/main/power-save-blocker.js

@@ -3,7 +3,7 @@ module.exports = {
   disable
 }
 
-const electron = require('electron')
+const { powerSaveBlocker } = require('electron')
 const log = require('./log')
 
 let blockId = 0
@@ -13,11 +13,11 @@ let blockId = 0
  * display.
  */
 function enable () {
-  if (electron.powerSaveBlocker.isStarted(blockId)) {
+  if (powerSaveBlocker.isStarted(blockId)) {
     // If a power saver block already exists, do nothing.
     return
   }
-  blockId = electron.powerSaveBlocker.start('prevent-display-sleep')
+  blockId = powerSaveBlocker.start('prevent-display-sleep')
   log(`powerSaveBlocker.enable: ${blockId}`)
 }
 
@@ -25,10 +25,10 @@ function enable () {
  * Stop blocking the system from entering low-power mode.
  */
 function disable () {
-  if (!electron.powerSaveBlocker.isStarted(blockId)) {
+  if (!powerSaveBlocker.isStarted(blockId)) {
     // If a power saver block does not exist, do nothing.
     return
   }
-  electron.powerSaveBlocker.stop(blockId)
+  powerSaveBlocker.stop(blockId)
   log(`powerSaveBlocker.disable: ${blockId}`)
 }

src/main/shell.js

@@ -5,7 +5,7 @@ module.exports = {
   moveItemToTrash
 }
 
-const electron = require('electron')
+const { shell } = require('electron')
 const log = require('./log')
 
 /**
@@ -13,15 +13,16 @@ const log = require('./log')
  */
 function openExternal (url) {
   log(`openExternal: ${url}`)
-  electron.shell.openExternal(url)
+  shell.openExternal(url)
 }
 
 /**
  * Open the given file in the desktop’s default manner.
  */
+
 function openPath (path) {
   log(`openPath: ${path}`)
-  electron.shell.openPath(path)
+  shell.openPath(path)
 }
 
 /**
@@ -29,7 +30,7 @@ function openPath (path) {
  */
 function showItemInFolder (path) {
   log(`showItemInFolder: ${path}`)
-  electron.shell.showItemInFolder(path)
+  shell.showItemInFolder(path)
 }
 
 /**
@@ -37,5 +38,5 @@ function showItemInFolder (path) {
  */
 function moveItemToTrash (path) {
   log(`moveItemToTrash: ${path}`)
-  electron.shell.moveItemToTrash(path)
+  shell.moveItemToTrash(path)
 }

src/main/shortcuts.js

@@ -3,20 +3,20 @@ module.exports = {
   enable
 }
 
-const electron = require('electron')
+const { globalShortcut } = require('electron')
 const windows = require('./windows')
 
 function enable () {
   // Register play/pause media key, available on some keyboards.
-  electron.globalShortcut.register(
+  globalShortcut.register(
     'MediaPlayPause',
     () => windows.main.dispatch('playPause')
   )
-  electron.globalShortcut.register(
+  globalShortcut.register(
     'MediaNextTrack',
     () => windows.main.dispatch('nextTrack')
   )
-  electron.globalShortcut.register(
+  globalShortcut.register(
     'MediaPreviousTrack',
     () => windows.main.dispatch('previousTrack')
   )
@@ -24,7 +24,7 @@ function enable () {
 
 function disable () {
   // Return the media key to the OS, so other apps can use it.
-  electron.globalShortcut.unregister('MediaPlayPause')
-  electron.globalShortcut.unregister('MediaNextTrack')
-  electron.globalShortcut.unregister('MediaPreviousTrack')
+  globalShortcut.unregister('MediaPlayPause')
+  globalShortcut.unregister('MediaNextTrack')
+  globalShortcut.unregister('MediaPreviousTrack')
 }

src/main/squirrel-win32.js

@@ -2,11 +2,10 @@ module.exports = {
   handleEvent
 }
 
+const { app } = require('electron')
+
 const path = require('path')
 const spawn = require('child_process').spawn
-const electron = require('electron')
-
-const app = electron.app
 
 const handlers = require('./handlers')
 

src/main/tray.js

@@ -4,9 +4,7 @@ module.exports = {
   setWindowFocus
 }
 
-const electron = require('electron')
-
-const app = electron.app
+const { app, Tray, Menu } = require('electron')
 
 const config = require('../config')
 const windows = require('./windows')
@@ -67,7 +65,7 @@ function checkLinuxTraySupport (cb) {
 }
 
 function createTray () {
-  tray = new electron.Tray(getIconPath())
+  tray = new Tray(getIconPath())
 
   // On Windows, left click opens the app, right click opens the context menu.
   // On Linux, any click (left or right) opens the context menu.
@@ -78,7 +76,7 @@ function createTray () {
 }
 
 function updateTrayMenu () {
-  const contextMenu = electron.Menu.buildFromTemplate(getMenuTemplate())
+  const contextMenu = Menu.buildFromTemplate(getMenuTemplate())
   tray.setContextMenu(contextMenu)
 }
 

src/main/updater.js

@@ -2,7 +2,7 @@ module.exports = {
   init
 }
 
-const electron = require('electron')
+const { autoUpdater } = require('electron')
 const get = require('simple-get')
 
 const config = require('../config')
@@ -47,31 +47,31 @@ function onResponse (err, res, data) {
 }
 
 function initDarwinWin32 () {
-  electron.autoUpdater.on(
+  autoUpdater.on(
     'error',
     (err) => log.error(`Update error: ${err.message}`)
   )
 
-  electron.autoUpdater.on(
+  autoUpdater.on(
     'checking-for-update',
     () => log('Checking for update')
   )
 
-  electron.autoUpdater.on(
+  autoUpdater.on(
     'update-available',
     () => log('Update available')
   )
 
-  electron.autoUpdater.on(
+  autoUpdater.on(
     'update-not-available',
     () => log('No update available')
   )
 
-  electron.autoUpdater.on(
+  autoUpdater.on(
     'update-downloaded',
     (e, notes, name, date, url) => log(`Update downloaded: ${name}: ${url}`)
   )
 
-  electron.autoUpdater.setFeedURL({ url: AUTO_UPDATE_URL })
-  electron.autoUpdater.checkForUpdates()
+  autoUpdater.setFeedURL({ url: AUTO_UPDATE_URL })
+  autoUpdater.checkForUpdates()
 }

src/main/user-tasks.js

@@ -2,9 +2,7 @@ module.exports = {
   init
 }
 
-const electron = require('electron')
-
-const app = electron.app
+const { app } = require('electron')
 
 /**
  * Add a user task menu to the app icon on right-click. (Windows)

src/main/windows/about.js

@@ -4,14 +4,14 @@ const about = module.exports = {
 }
 
 const config = require('../../config')
-const electron = require('electron')
+const { BrowserWindow } = require('electron')
 
 function init () {
   if (about.win) {
     return about.win.show()
   }
 
-  const win = about.win = new electron.BrowserWindow({
+  const win = about.win = new BrowserWindow({
     backgroundColor: '#ECECEC',
     center: true,
     fullscreen: false,
@@ -27,7 +27,8 @@ function init () {
     webPreferences: {
       nodeIntegration: true,
       enableBlinkFeatures: 'AudioVideoTracks',
-      enableRemoteModule: true
+      enableRemoteModule: true,
+      backgroundThrottling: false
     },
     width: 300
   })

src/main/windows/main.js

@@ -14,11 +14,9 @@ const main = module.exports = {
   win: null
 }
 
-const electron = require('electron')
+const { app, BrowserWindow, screen } = require('electron')
 const debounce = require('debounce')
 
-const app = electron.app
-
 const config = require('../../config')
 const log = require('../log')
 const menu = require('../menu')
@@ -30,7 +28,7 @@ function init (state, options) {
 
   const initialBounds = Object.assign(config.WINDOW_INITIAL_BOUNDS, state.saved.bounds)
 
-  const win = main.win = new electron.BrowserWindow({
+  const win = main.win = new BrowserWindow({
     backgroundColor: '#282828',
     darkTheme: true, // Forces dark theme (GTK+3)
     height: initialBounds.height,
@@ -45,7 +43,8 @@ function init (state, options) {
     webPreferences: {
       nodeIntegration: true,
       enableBlinkFeatures: 'AudioVideoTracks',
-      enableRemoteModule: true
+      enableRemoteModule: true,
+      backgroundThrottling: false
     },
     x: initialBounds.x,
     y: initialBounds.y
@@ -161,7 +160,7 @@ function setBounds (bounds, maximize) {
     log(`setBounds: setting bounds to ${JSON.stringify(bounds)}`)
     if (bounds.x === null && bounds.y === null) {
       // X and Y not specified? By default, center on current screen
-      const scr = electron.screen.getDisplayMatching(main.win.getBounds())
+      const scr = screen.getDisplayMatching(main.win.getBounds())
       bounds.x = Math.round(scr.bounds.x + (scr.bounds.width / 2) - (bounds.width / 2))
       bounds.y = Math.round(scr.bounds.y + (scr.bounds.height / 2) - (bounds.height / 2))
       log(`setBounds: centered to ${JSON.stringify(bounds)}`)

src/main/windows/webtorrent.js

@@ -6,12 +6,12 @@ const webtorrent = module.exports = {
   win: null
 }
 
-const electron = require('electron')
+const { app, BrowserWindow } = require('electron')
 
 const config = require('../../config')
 
 function init () {
-  const win = webtorrent.win = new electron.BrowserWindow({
+  const win = webtorrent.win = new BrowserWindow({
     backgroundColor: '#1E1E1E',
     center: true,
     fullscreen: false,
@@ -27,7 +27,8 @@ function init () {
     webPreferences: {
       nodeIntegration: true,
       enableBlinkFeatures: 'AudioVideoTracks',
-      enableRemoteModule: true
+      enableRemoteModule: true,
+      backgroundThrottling: false
     },
     width: 150
   })
@@ -36,7 +37,7 @@ function init () {
 
   // Prevent killing the WebTorrent process
   win.on('close', function (e) {
-    if (electron.app.isQuitting) {
+    if (app.isQuitting) {
       return
     }
     e.preventDefault()

src/renderer/components/path-selector.js

@@ -1,12 +1,10 @@
 const path = require('path')
 
 const colors = require('material-ui/styles/colors')
-const electron = require('electron')
+const { remote } = require('electron')
 const React = require('react')
 const PropTypes = require('prop-types')
 
-const remote = electron.remote
-
 const RaisedButton = require('material-ui/RaisedButton').default
 const TextField = require('material-ui/TextField').default
 

src/renderer/components/unsupported-media-modal.js

@@ -1,5 +1,5 @@
 const React = require('react')
-const electron = require('electron')
+const { shell } = require('electron')
 
 const ModalOKCancel = require('./modal-ok-cancel')
 const { dispatcher } = require('../lib/dispatcher')
@@ -36,7 +36,7 @@ module.exports = class UnsupportedMediaModal extends React.Component {
   }
 
   onInstall () {
-    electron.shell.openExternal('http://www.videolan.org/vlc/')
+    shell.openExternal('http://www.videolan.org/vlc/')
 
     // TODO: dcposch send a dispatch rather than modifying state directly
     const state = this.props.state

src/renderer/components/update-available-modal.js

@@ -1,5 +1,5 @@
 const React = require('react')
-const electron = require('electron')
+const { shell } = require('electron')
 
 const ModalOKCancel = require('./modal-ok-cancel')
 const { dispatch } = require('../lib/dispatcher')
@@ -25,7 +25,7 @@ module.exports = class UpdateAvailableModal extends React.Component {
 
     function handleShow () {
       // TODO: use the GitHub urls from config.js
-      electron.shell.openExternal('https://github.com/webtorrent/webtorrent-desktop/releases')
+      shell.openExternal('https://github.com/webtorrent/webtorrent-desktop/releases')
       dispatch('exitModal')
     }
 

src/renderer/controllers/playback-controller.js

@@ -1,4 +1,4 @@
-const electron = require('electron')
+const { ipcRenderer } = require('electron')
 const path = require('path')
 
 const Cast = require('../lib/cast')
@@ -11,8 +11,6 @@ const TorrentSummary = require('../lib/torrent-summary')
 const Playlist = require('../lib/playlist')
 const State = require('../lib/state')
 
-const ipcRenderer = electron.ipcRenderer
-
 // Controls playback of torrents and files within torrents
 // both local (<video>,<audio>,external player) and remote (cast)
 module.exports = class PlaybackController {
@@ -158,6 +156,20 @@ module.exports = class PlaybackController {
     else this.state.playing.jumpToTime = time
   }
 
+  // Show video preview
+  preview (x) {
+    if (!Number.isFinite(x)) {
+      console.error('Tried to preview a non-finite position ' + x)
+      return console.trace()
+    }
+    this.state.playing.previewXCoord = x
+  }
+
+  // Hide video preview
+  clearPreview () {
+    this.state.playing.previewXCoord = null
+  }
+
   // Change playback speed. 1 = faster, -1 = slower
   // Playback speed ranges from 16 (fast forward) to 1 (normal playback)
   // to 0.25 (quarter-speed playback), then goes to -0.25, -0.5, -1, -2, etc
@@ -270,8 +282,10 @@ module.exports = class PlaybackController {
     state.playing.infoHash = infoHash
     state.playing.fileIndex = index
     state.playing.fileName = fileSummary.name
-    state.playing.type = TorrentPlayer.isVideo(fileSummary) ? 'video'
-      : TorrentPlayer.isAudio(fileSummary) ? 'audio'
+    state.playing.type = TorrentPlayer.isVideo(fileSummary)
+      ? 'video'
+      : TorrentPlayer.isAudio(fileSummary)
+        ? 'audio'
         : 'other'
 
     // pick up where we left off

src/renderer/controllers/prefs-controller.js

@@ -1,5 +1,5 @@
 const { dispatch } = require('../lib/dispatcher')
-const ipcRenderer = require('electron').ipcRenderer
+const { ipcRenderer } = require('electron')
 
 // Controls the Preferences screen
 module.exports = class PrefsController {

src/renderer/controllers/subtitles-controller.js

@@ -1,10 +1,8 @@
-const electron = require('electron')
+const { remote } = require('electron')
 const fs = require('fs')
 const path = require('path')
 const parallel = require('run-parallel')
 
-const remote = electron.remote
-
 const { dispatch } = require('../lib/dispatcher')
 
 module.exports = class SubtitlesController {

src/renderer/controllers/torrent-controller.js

@@ -1,5 +1,5 @@
 const path = require('path')
-const ipcRenderer = require('electron').ipcRenderer
+const { ipcRenderer } = require('electron')
 
 const TorrentSummary = require('../lib/torrent-summary')
 const sound = require('../lib/sound')

src/renderer/controllers/torrent-list-controller.js

@@ -1,14 +1,12 @@
 const fs = require('fs')
 const path = require('path')
-const electron = require('electron')
+const { ipcRenderer, remote, clipboard } = require('electron')
 
 const { dispatch } = require('../lib/dispatcher')
 const { TorrentKeyNotFoundError } = require('../lib/errors')
 const sound = require('../lib/sound')
 const TorrentSummary = require('../lib/torrent-summary')
 
-const ipcRenderer = electron.ipcRenderer
-
 const instantIoRegex = /^(https:\/\/)?instant\.io\/#/
 
 // Controls the torrent list: creating, adding, deleting, & manipulating torrents
@@ -160,7 +158,7 @@ module.exports = class TorrentListController {
       .filter((torrent) => { // We're interested in active torrents only.
         return (['downloading', 'seeding'].indexOf(torrent.status) !== -1)
       })
-      .map((torrent) => { // Pause all active torrents except the one that started playing.
+      .forEach((torrent) => { // Pause all active torrents except the one that started playing.
         if (infoHash === torrent.infoHash) return
 
         // Pause torrent without playing sounds.
@@ -175,7 +173,7 @@ module.exports = class TorrentListController {
   resumePausedTorrents () {
     console.log('Playback Priority: resuming paused torrents')
     if (!this.state.saved.torrentsToResume || !this.state.saved.torrentsToResume.length) return
-    this.state.saved.torrentsToResume.map((infoHash) => {
+    this.state.saved.torrentsToResume.forEach((infoHash) => {
       this.toggleTorrent(infoHash)
     })
 
@@ -249,59 +247,59 @@ module.exports = class TorrentListController {
 
   openTorrentContextMenu (infoHash) {
     const torrentSummary = TorrentSummary.getByKey(this.state, infoHash)
-    const menu = new electron.remote.Menu()
+    const menu = new remote.Menu()
 
-    menu.append(new electron.remote.MenuItem({
+    menu.append(new remote.MenuItem({
       label: 'Remove From List',
       click: () => dispatch('confirmDeleteTorrent', torrentSummary.infoHash, false)
     }))
 
-    menu.append(new electron.remote.MenuItem({
+    menu.append(new remote.MenuItem({
       label: 'Remove Data File',
       click: () => dispatch('confirmDeleteTorrent', torrentSummary.infoHash, true)
     }))
 
-    menu.append(new electron.remote.MenuItem({
+    menu.append(new remote.MenuItem({
       type: 'separator'
     }))
 
     if (torrentSummary.files) {
-      menu.append(new electron.remote.MenuItem({
+      menu.append(new remote.MenuItem({
         label: process.platform === 'darwin' ? 'Show in Finder' : 'Show in Folder',
         click: () => showItemInFolder(torrentSummary)
       }))
-      menu.append(new electron.remote.MenuItem({
+      menu.append(new remote.MenuItem({
         type: 'separator'
       }))
     }
 
-    menu.append(new electron.remote.MenuItem({
+    menu.append(new remote.MenuItem({
       label: 'Copy Magnet Link to Clipboard',
-      click: () => electron.clipboard.writeText(torrentSummary.magnetURI)
+      click: () => clipboard.writeText(torrentSummary.magnetURI)
     }))
 
-    menu.append(new electron.remote.MenuItem({
+    menu.append(new remote.MenuItem({
       label: 'Copy Instant.io Link to Clipboard',
-      click: () => electron.clipboard.writeText(`https://instant.io/#${torrentSummary.infoHash}`)
+      click: () => clipboard.writeText(`https://instant.io/#${torrentSummary.infoHash}`)
     }))
 
-    menu.append(new electron.remote.MenuItem({
+    menu.append(new remote.MenuItem({
       label: 'Save Torrent File As...',
       click: () => dispatch('saveTorrentFileAs', torrentSummary.torrentKey),
       enabled: torrentSummary.torrentFileName != null
     }))
 
-    menu.append(new electron.remote.MenuItem({
+    menu.append(new remote.MenuItem({
       type: 'separator'
     }))
 
     const sortedByName = this.state.saved.prefs.sortByName
-    menu.append(new electron.remote.MenuItem({
+    menu.append(new remote.MenuItem({
       label: `${sortedByName ? '✓ ' : ''}Sort by Name`,
       click: () => dispatch('updatePreferences', 'sortByName', !sortedByName)
     }))
 
-    menu.popup({ window: electron.remote.getCurrentWindow() })
+    menu.popup({ window: remote.getCurrentWindow() })
   }
 
   // Takes a torrentSummary or torrentKey
@@ -311,7 +309,7 @@ module.exports = class TorrentListController {
     if (!torrentSummary) throw new TorrentKeyNotFoundError(torrentKey)
     const downloadPath = this.state.saved.prefs.downloadPath
     const newFileName = path.parse(torrentSummary.name).name + '.torrent'
-    const win = electron.remote.getCurrentWindow()
+    const win = remote.getCurrentWindow()
     const opts = {
       title: 'Save Torrent File',
       defaultPath: path.join(downloadPath, newFileName),
@@ -322,7 +320,7 @@ module.exports = class TorrentListController {
       buttonLabel: 'Save'
     }
 
-    const savePath = electron.remote.dialog.showSaveDialogSync(win, opts)
+    const savePath = remote.dialog.showSaveDialogSync(win, opts)
 
     if (!savePath) return // They clicked Cancel
     console.log('Saving torrent ' + torrentKey + ' to ' + savePath)

src/renderer/lib/telemetry.js

@@ -7,7 +7,7 @@ module.exports = {
   logPlayAttempt
 }
 
-const electron = require('electron')
+const { remote } = require('electron')
 
 const config = require('../../config')
 
@@ -74,7 +74,7 @@ function reset () {
 
 // Track screen resolution
 function getScreenInfo () {
-  return electron.remote.screen.getAllDisplays().map((screen) => ({
+  return remote.screen.getAllDisplays().map((screen) => ({
     width: screen.size.width,
     height: screen.size.height,
     scaleFactor: screen.scaleFactor

src/renderer/main.js

@@ -130,7 +130,10 @@ function onState (err, _state) {
   resumeTorrents()
 
   // Initialize ReactDOM
-  app = ReactDOM.render(<App state={state} />, document.querySelector('#body'))
+  ReactDOM.render(
+    <App state={state} ref={elem => { app = elem }} />,
+    document.querySelector('#body')
+  )
 
   // Calling update() updates the UI given the current state
   // Do this at least once a second to give every file in every torrentSummary
@@ -274,6 +277,8 @@ const dispatchHandlers = {
   previousTrack: () => controllers.playback().previousTrack(),
   skip: (time) => controllers.playback().skip(time),
   skipTo: (time) => controllers.playback().skipTo(time),
+  preview: (x) => controllers.playback().preview(x),
+  clearPreview: () => controllers.playback().clearPreview(),
   changePlaybackRate: (dir) => controllers.playback().changePlaybackRate(dir),
   changeVolume: (delta) => controllers.playback().changeVolume(delta),
   setVolume: (vol) => controllers.playback().setVolume(vol),

src/renderer/pages/player-page.js

@@ -1,5 +1,5 @@
 const React = require('react')
-const Bitfield = require('bitfield')
+const BitField = require('bitfield').default
 const prettyBytes = require('prettier-bytes')
 
 const TorrentSummary = require('../lib/torrent-summary')
@@ -427,22 +427,77 @@ function renderCastScreen (state) {
 
   const isStarting = state.playing.location.endsWith('-pending')
   const castName = state.playing.castName
+  const fileName = state.getPlayingFileSummary().name || ''
   let castStatus
   if (isCast && isStarting) castStatus = 'Connecting to ' + castName + '...'
   else if (isCast && !isStarting) castStatus = 'Connected to ' + castName
   else castStatus = ''
 
+  const prog = state.getPlayingTorrentSummary().progress || {}
+
   // Show a nice title image, if possible
   const style = {
     backgroundImage: cssBackgroundImagePoster(state)
   }
 
+  function renderEta (total, downloaded) {
+    const missing = (total || 0) - (downloaded || 0)
+    const downloadSpeed = prog.downloadSpeed || 0
+    if (downloadSpeed === 0 || missing === 0) return
+
+    const rawEta = missing / downloadSpeed
+    const hours = Math.floor(rawEta / 3600) % 24
+    const minutes = Math.floor(rawEta / 60) % 60
+    const seconds = Math.floor(rawEta % 60)
+
+    const hoursStr = hours ? hours + 'h' : ''
+    const minutesStr = (hours || minutes) ? minutes + 'm' : ''
+    const secondsStr = seconds + 's'
+
+    return (<span>{hoursStr} {minutesStr} {secondsStr} remaining</span>)
+  }
+
+  function renderDownloadProgress () {
+    if (!prog.files) return
+
+    const fileProg = prog.files[state.playing.fileIndex]
+    const fileProgress = fileProg.numPiecesPresent / fileProg.numPieces
+    const fileLength = state.getPlayingFileSummary().length
+    const fileDownloaded = fileProgress * fileLength
+
+    const progress = Math.round(100 * fileProgress)
+    const total = prettyBytes(fileLength)
+    const completed = prettyBytes(fileDownloaded)
+
+    const downloadSpeed = prettyBytes(prog.downloadSpeed || 0)
+    const uploadSpeed = prettyBytes(prog.uploadSpeed || 0)
+
+    let sizes
+    if (fileProgress < 1) {
+      sizes = <span> | {completed} / {total}</span>
+    } else {
+      sizes = <span> | {completed}</span>
+    }
+
+    return (
+      <div key='download-progress'>
+        <span className='progress'>{progress}% downloaded {sizes}</span>
+        <br />
+        <span>↓ {downloadSpeed}/s ↑ {uploadSpeed}/s | {prog.numPeers || 0} peer(s)</span>
+        <br />
+        {renderEta(fileLength, fileDownloaded)}
+      </div>
+    )
+  }
+
   return (
     <div key='cast' className='letterbox' style={style}>
       <div className='cast-screen'>
         <i className='icon'>{castIcon}</i>
         <div key='type' className='cast-type'>{castType}</div>
         <div key='status' className='cast-status'>{castStatus}</div>
+        <div key='name' className='name'>{fileName}</div>
+        {renderDownloadProgress()}
       </div>
     </div>
   )
@@ -536,6 +591,8 @@ function renderPlayerControls (state) {
   const nextClass = Playlist.hasNext(state) ? '' : 'disabled'
 
   const elements = [
+    renderPreview(state),
+
     <div key='playback-bar' className='playback-bar'>
       {renderLoadingBar(state)}
       <div
@@ -547,6 +604,8 @@ function renderPlayerControls (state) {
         key='scrub-bar'
         className='scrub-bar'
         draggable
+        onMouseMove={handleScrubPreview}
+        onMouseOut={clearPreview}
         onDragStart={handleDragStart}
         onClick={handleScrub}
         onDrag={handleScrub}
@@ -655,10 +714,14 @@ function renderPlayerControls (state) {
   // Render volume slider
   const volume = state.playing.volume
   const volumeIcon = 'volume_' + (
-    volume === 0 ? 'off'
-      : volume < 0.3 ? 'mute'
-        : volume < 0.6 ? 'down'
-          : 'up')
+    volume === 0
+      ? 'off'
+      : volume < 0.3
+        ? 'mute'
+        : volume < 0.6
+          ? 'down'
+          : 'up'
+  )
   const volumeStyle = {
     background: '-webkit-gradient(linear, left top, right top, ' +
       'color-stop(' + (volume * 100) + '%, #eee), ' +
@@ -722,6 +785,19 @@ function renderPlayerControls (state) {
     }
   }
 
+  // Handles a scrub hover (preview another position in the video)
+  function handleScrubPreview (e) {
+    // Only show for videos
+    if (!e.clientX || state.playing.type !== 'video') return
+    dispatch('mediaMouseMoved')
+    dispatch('preview', e.clientX)
+  }
+
+  function clearPreview (e) {
+    if (state.playing.type !== 'video') return
+    dispatch('clearPreview')
+  }
+
   // Handles a click or drag to scrub (jump to another position in the video)
   function handleScrub (e) {
     if (!e.clientX) return
@@ -760,6 +836,56 @@ function renderPlayerControls (state) {
   }
 }
 
+function renderPreview (state) {
+  const { previewXCoord = null } = state.playing
+
+  // Calculate time from x-coord as fraction of track width
+  const windowWidth = document.querySelector('body').clientWidth
+  const fraction = previewXCoord / windowWidth
+  const time = fraction * state.playing.duration /* seconds */
+
+  const height = 70
+  let width = 0
+
+  const previewEl = document.querySelector('video#preview')
+  if (previewEl !== null && previewXCoord !== null) {
+    previewEl.currentTime = time
+
+    // Auto adjust width to maintain video aspect ratio
+    width = Math.floor((previewEl.videoWidth / previewEl.videoHeight) * height)
+  }
+
+  // Center preview window on mouse cursor,
+  // while avoiding falling off the left or right edges
+  const xPos = Math.min(Math.max(previewXCoord - (width / 2), 5), windowWidth - width - 5)
+
+  return (
+    <div
+      key='preview' style={{
+        position: 'absolute',
+        bottom: 50,
+        left: xPos,
+        display: previewXCoord == null && 'none' // Hide preview when XCoord unset
+      }}
+    >
+      <div style={{ width, height, backgroundColor: 'black' }}>
+        <video
+          src={Playlist.getCurrentLocalURL(state)}
+          id='preview'
+          style={{ border: '1px solid lightgrey', borderRadius: 2 }}
+        />
+      </div>
+      <p
+        style={{
+          textAlign: 'center', margin: 5, textShadow: '0 0 2px rgba(0,0,0,.5)', color: '#eee'
+        }}
+      >
+        {formatTime(time, state.playing.duration)}
+      </p>
+    </div>
+  )
+}
+
 // Renders the loading bar. Shows which parts of the torrent are loaded, which
 // can be 'spongey' / non-contiguous
 function renderLoadingBar (state) {
@@ -779,7 +905,7 @@ function renderLoadingBar (state) {
   const parts = []
   let lastPiecePresent = false
   for (let i = fileProg.startPiece; i <= fileProg.endPiece; i++) {
-    const partPresent = Bitfield.prototype.get.call(prog.bitfield, i)
+    const partPresent = BitField.prototype.get.call(prog.bitfield, i)
     if (partPresent && !lastPiecePresent) {
       parts.push({ start: i - fileProg.startPiece, count: 1 })
     } else if (partPresent) {

src/renderer/webtorrent.js

@@ -5,7 +5,7 @@ console.time('init')
 const crypto = require('crypto')
 const util = require('util')
 const defaultAnnounceList = require('create-torrent').announceList
-const electron = require('electron')
+const { ipcRenderer } = require('electron')
 const fs = require('fs')
 const mm = require('music-metadata')
 const networkAddress = require('network-address')
@@ -16,9 +16,6 @@ const config = require('../config')
 const { TorrentKeyNotFoundError } = require('./lib/errors')
 const torrentPoster = require('./lib/torrent-poster')
 
-// Send & receive messages from the main window
-const ipc = electron.ipcRenderer
-
 // Force use of webtorrent trackers on all torrents
 global.WEBTORRENT_ANNOUNCE = defaultAnnounceList
   .map((arr) => arr[0])
@@ -55,7 +52,7 @@ const PEER_ID = Buffer.from(VERSION_PREFIX + crypto.randomBytes(9).toString('bas
 
 // Connect to the WebTorrent and BitTorrent networks. WebTorrent Desktop is a hybrid
 // client, as explained here: https://webtorrent.io/faq
-let client = window.client = new WebTorrent({ peerId: PEER_ID })
+let client = window.client = new WebTorrent({ peerId: PEER_ID, utp: true })
 
 // WebTorrent-to-HTTP streaming sever
 let server = null
@@ -68,29 +65,29 @@ init()
 function init () {
   listenToClientEvents()
 
-  ipc.on('wt-start-torrenting', (e, torrentKey, torrentID, path, fileModtimes, selections) =>
+  ipcRenderer.on('wt-start-torrenting', (e, torrentKey, torrentID, path, fileModtimes, selections) =>
     startTorrenting(torrentKey, torrentID, path, fileModtimes, selections))
-  ipc.on('wt-stop-torrenting', (e, infoHash) =>
+  ipcRenderer.on('wt-stop-torrenting', (e, infoHash) =>
     stopTorrenting(infoHash))
-  ipc.on('wt-create-torrent', (e, torrentKey, options) =>
+  ipcRenderer.on('wt-create-torrent', (e, torrentKey, options) =>
     createTorrent(torrentKey, options))
-  ipc.on('wt-save-torrent-file', (e, torrentKey) =>
+  ipcRenderer.on('wt-save-torrent-file', (e, torrentKey) =>
     saveTorrentFile(torrentKey))
-  ipc.on('wt-generate-torrent-poster', (e, torrentKey) =>
+  ipcRenderer.on('wt-generate-torrent-poster', (e, torrentKey) =>
     generateTorrentPoster(torrentKey))
-  ipc.on('wt-get-audio-metadata', (e, infoHash, index) =>
+  ipcRenderer.on('wt-get-audio-metadata', (e, infoHash, index) =>
     getAudioMetadata(infoHash, index))
-  ipc.on('wt-start-server', (e, infoHash) =>
+  ipcRenderer.on('wt-start-server', (e, infoHash) =>
     startServer(infoHash))
-  ipc.on('wt-stop-server', (e) =>
+  ipcRenderer.on('wt-stop-server', (e) =>
     stopServer())
-  ipc.on('wt-select-files', (e, infoHash, selections) =>
+  ipcRenderer.on('wt-select-files', (e, infoHash, selections) =>
     selectFiles(infoHash, selections))
 
-  ipc.send('ipcReadyWebTorrent')
+  ipcRenderer.send('ipcReadyWebTorrent')
 
   window.addEventListener('error', (e) =>
-    ipc.send('wt-uncaught-error', { message: e.error.message, stack: e.error.stack }),
+    ipcRenderer.send('wt-uncaught-error', { message: e.error.message, stack: e.error.stack }),
   true)
 
   setInterval(updateTorrentProgress, 1000)
@@ -98,8 +95,8 @@ function init () {
 }
 
 function listenToClientEvents () {
-  client.on('warning', (err) => ipc.send('wt-warning', null, err.message))
-  client.on('error', (err) => ipc.send('wt-error', null, err.message))
+  client.on('warning', (err) => ipcRenderer.send('wt-warning', null, err.message))
+  client.on('error', (err) => ipcRenderer.send('wt-error', null, err.message))
 }
 
 // Starts a given TorrentID, which can be an infohash, magnet URI, etc.
@@ -133,44 +130,44 @@ function createTorrent (torrentKey, options) {
   const torrent = client.seed(paths, options)
   torrent.key = torrentKey
   addTorrentEvents(torrent)
-  ipc.send('wt-new-torrent')
+  ipcRenderer.send('wt-new-torrent')
 }
 
 function addTorrentEvents (torrent) {
   torrent.on('warning', (err) =>
-    ipc.send('wt-warning', torrent.key, err.message))
+    ipcRenderer.send('wt-warning', torrent.key, err.message))
   torrent.on('error', (err) =>
-    ipc.send('wt-error', torrent.key, err.message))
+    ipcRenderer.send('wt-error', torrent.key, err.message))
   torrent.on('infoHash', () =>
-    ipc.send('wt-parsed', torrent.key, torrent.infoHash, torrent.magnetURI))
+    ipcRenderer.send('wt-parsed', torrent.key, torrent.infoHash, torrent.magnetURI))
   torrent.on('metadata', torrentMetadata)
   torrent.on('ready', torrentReady)
   torrent.on('done', torrentDone)
 
   function torrentMetadata () {
     const info = getTorrentInfo(torrent)
-    ipc.send('wt-metadata', torrent.key, info)
+    ipcRenderer.send('wt-metadata', torrent.key, info)
 
     updateTorrentProgress()
   }
 
   function torrentReady () {
     const info = getTorrentInfo(torrent)
-    ipc.send('wt-ready', torrent.key, info)
-    ipc.send('wt-ready-' + torrent.infoHash, torrent.key, info)
+    ipcRenderer.send('wt-ready', torrent.key, info)
+    ipcRenderer.send('wt-ready-' + torrent.infoHash, torrent.key, info)
 
     updateTorrentProgress()
   }
 
   function torrentDone () {
     const info = getTorrentInfo(torrent)
-    ipc.send('wt-done', torrent.key, info)
+    ipcRenderer.send('wt-done', torrent.key, info)
 
     updateTorrentProgress()
 
     torrent.getFileModtimes(function (err, fileModtimes) {
       if (err) return onError(err)
-      ipc.send('wt-file-modtimes', torrent.key, fileModtimes)
+      ipcRenderer.send('wt-file-modtimes', torrent.key, fileModtimes)
     })
   }
 }
@@ -207,7 +204,7 @@ function saveTorrentFile (torrentKey) {
     const fileName = torrent.infoHash + '.torrent'
     if (!err) {
       // We've already saved the file
-      return ipc.send('wt-file-saved', torrentKey, fileName)
+      return ipcRenderer.send('wt-file-saved', torrentKey, fileName)
     }
 
     // Otherwise, save the .torrent file, under the app config folder
@@ -215,7 +212,7 @@ function saveTorrentFile (torrentKey) {
       fs.writeFile(torrentPath, torrent.torrentFile, function (err) {
         if (err) return console.log('error saving torrent file %s: %o', torrentPath, err)
         console.log('saved torrent file %s', torrentPath)
-        return ipc.send('wt-file-saved', torrentKey, fileName)
+        return ipcRenderer.send('wt-file-saved', torrentKey, fileName)
       })
     })
   })
@@ -235,7 +232,7 @@ function generateTorrentPoster (torrentKey) {
       fs.writeFile(posterFilePath, buf, function (err) {
         if (err) return console.log('error saving poster: %o', err)
         // show the poster
-        ipc.send('wt-poster', torrentKey, posterFileName)
+        ipcRenderer.send('wt-poster', torrentKey, posterFileName)
       })
     })
   })
@@ -247,7 +244,7 @@ function updateTorrentProgress () {
   if (prevProgress && util.isDeepStrictEqual(progress, prevProgress)) {
     return /* don't send heavy object if it hasn't changed */
   }
-  ipc.send('wt-progress', progress)
+  ipcRenderer.send('wt-progress', progress)
   prevProgress = progress
 }
 
@@ -317,8 +314,8 @@ function startServerFromReadyTorrent (torrent, cb) {
       networkAddress: networkAddress()
     }
 
-    ipc.send('wt-server-running', info)
-    ipc.send('wt-server-' + torrent.infoHash, info)
+    ipcRenderer.send('wt-server-running', info)
+    ipcRenderer.send('wt-server-' + torrent.infoHash, info)
   })
 }
 
@@ -336,14 +333,14 @@ function getAudioMetadata (infoHash, index) {
 
   // Set initial matadata to display the filename first.
   const metadata = { title: file.name }
-  ipc.send('wt-audio-metadata', infoHash, index, metadata)
+  ipcRenderer.send('wt-audio-metadata', infoHash, index, metadata)
 
   const options = {
     native: false,
     skipCovers: true,
     fileSize: file.length,
     observer: event => {
-      ipc.send('wt-audio-metadata', infoHash, index, {
+      ipcRenderer.send('wt-audio-metadata', infoHash, index, {
         common: metadata.common,
         format: metadata.format
       })
@@ -358,7 +355,7 @@ function getAudioMetadata (infoHash, index) {
   onMetadata
     .then(
       metadata => {
-        ipc.send('wt-audio-metadata', infoHash, index, metadata)
+        ipcRenderer.send('wt-audio-metadata', infoHash, index, metadata)
         console.log(`metadata for file='${file.name}' completed.`)
       },
       err => {

static/linux/webtorrent-desktop.ejs

@@ -1,6 +1,5 @@
 [Desktop Entry]
 Type=Application
-<% if (version) { %>Version=<%= version %><% } %>
 Name=<%= productName %>
 <% if (genericName) { %>GenericName=<%= genericName %><% } %>
 <% if (description) { %>Comment=<%= description %><% } %>
@@ -11,7 +10,7 @@ Actions=CreateNewTorrent;OpenTorrentFile;OpenTorrentAddress;
 <% if (mimeType && mimeType.length) { %>MimeType=<%= mimeType.join(';') %>;<% } %>
 <% if (categories && categories.length) { %>Categories=<%= categories.join(';') %>;<% } %>
 StartupNotify=true
-<% if (name) { %>StartupWMClass=<%= name %> <% } %>
+StartupWMClass=<%= productName %>
 
 [Desktop Action CreateNewTorrent]
 Name=Create New Torrent...

static/main.css

@@ -558,6 +558,13 @@ body.drag .app::after {
   width: 100%;
 }
 
+.player .name {
+  font-size: 20px;
+  font-weight: bold;
+  line-height: 1.5em;
+  margin-bottom: 6px;
+}
+
 /*
  * PLAYER CONTROLS
  */