238 lines
8.3 KiB
Plaintext
238 lines
8.3 KiB
Plaintext
<!doctype html>
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<html>
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<body>
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<h1>Download files using the WebTorrent protocol (BitTorrent over WebRTC).</h1>
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<form>
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<label for="torrentId">Download from a magnet link: </label>
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<input name="torrentId", placeholder="magnet:" value="magnet:?xt=urn:btih:08ada5a7a6183aae1e09d831df6748d566095a10&dn=Sintel&tr=udp%3A%2F%2Fexplodie.org%3A6969&tr=udp%3A%2F%2Ftracker.coppersurfer.tk%3A6969&tr=udp%3A%2F%2Ftracker.empire-js.us%3A1337&tr=udp%3A%2F%2Ftracker.leechers-paradise.org%3A6969&tr=udp%3A%2F%2Ftracker.opentrackr.org%3A1337&tr=wss%3A%2F%2Ftracker.btorrent.xyz&tr=wss%3A%2F%2Ftracker.fastcast.nz&tr=wss%3A%2F%2Ftracker.openwebtorrent.com&ws=https%3A%2F%2Fwebtorrent.io%2Ftorrents%2F&xs=https%3A%2F%2Fwebtorrent.io%2Ftorrents%2Fsintel.torrent">
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<button type="submit">Download</button>
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</form>
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<h2>Log</h2>
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<div class="log"></div>
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<!-- Include the latest version of WebTorrent -->
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<script src="https://cdn.jsdelivr.net/webtorrent/latest/webtorrent.min.js"></script>
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<script>
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var client = new WebTorrent()
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client.on('error', function (err) {
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console.error('ERROR: ' + err.message)
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})
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document.querySelector('form').addEventListener('submit', function (e) {
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e.preventDefault() // Prevent page refresh
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var torrentId = document.querySelector('form input[name=torrentId]').value
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log('Adding ' + torrentId)
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client.add(torrentId, onTorrent)
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})
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function onTorrent (torrent) {
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log('Got torrent metadata!')
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log(
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'Torrent info hash: ' + torrent.infoHash + ' ' +
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'<a href="' + torrent.magnetURI + '" target="_blank">[Magnet URI]</a> ' +
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'<a href="' + torrent.torrentFileBlobURL + '" target="_blank" download="' + torrent.name + '.torrent">[Download .torrent]</a>'
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)
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// Print out progress every 5 seconds
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var interval = setInterval(function () {
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log('Progress: ' + (torrent.progress * 100).toFixed(1) + '%')
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}, 5000)
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torrent.on('done', function () {
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log('Progress: 100%')
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clearInterval(interval)
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})
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// Render all files into to the page
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torrent.files.forEach(function (file) {
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file.appendTo('.log')
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log('(Blob URLs only work if the file is loaded from a server. "http//localhost" works. "file://" does not.)')
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file.getBlobURL(function (err, url) {
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if (err) return log(err.message)
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log('File done.')
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log('<a href="' + url + '">Download full file: ' + file.name + '</a>')
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})
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})
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}
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function log (str) {
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var p = document.createElement('p')
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p.innerHTML = str
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document.querySelector('.log').appendChild(p)
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}
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</script>
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</body>
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</html>
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HTML example with status showing UI
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This complete HTML example mimics the UI of the webtorrent.io homepage. It downloads the sintel.torrent file, streams it in the browser and outputs some statistics to the user (peers, progress, remaining time, speed...).
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You can try it right now on CodePen to see what it looks like and play around with it!
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Feel free to replace torrentId with other torrent files, or magnet links, but keep in mind that the browser can only download torrents that are seeded by WebRTC peers (web peers). Use WebTorrent Desktop or Instant.io to seed torrents to the WebTorrent network.
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<!DOCTYPE html>
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<html>
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<head>
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<meta charset="UTF-8">
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<title>WebTorrent video player</title>
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<style>
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#output video {
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width: 100%;
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}
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#progressBar {
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height: 5px;
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width: 0%;
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background-color: #35b44f;
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transition: width .4s ease-in-out;
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}
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body.is-seed .show-seed {
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display: inline;
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}
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body.is-seed .show-leech {
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display: none;
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}
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.show-seed {
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display: none;
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}
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#status code {
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font-size: 90%;
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font-weight: 700;
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margin-left: 3px;
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margin-right: 3px;
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border-bottom: 1px dashed rgba(255,255,255,0.3);
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}
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.is-seed #hero {
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background-color: #154820;
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transition: .5s .5s background-color ease-in-out;
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}
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#hero {
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background-color: #2a3749;
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}
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#status {
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color: #fff;
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font-size: 17px;
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padding: 5px;
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}
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a:link, a:visited {
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color: #30a247;
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text-decoration: none;
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}
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</style>
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</head>
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<body>
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<div id="hero">
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<div id="output">
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<div id="progressBar"></div>
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<!-- The video player will be added here -->
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</div>
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<!-- Statistics -->
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<div id="status">
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<div>
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<span class="show-leech">Downloading </span>
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<span class="show-seed">Seeding </span>
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<code>
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<!-- Informative link to the torrent file -->
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<a id="torrentLink" href="https://webtorrent.io/torrents/sintel.torrent">sintel.torrent</a>
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</code>
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<span class="show-leech"> from </span>
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<span class="show-seed"> to </span>
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<code id="numPeers">0 peers</code>.
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</div>
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<div>
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<code id="downloaded"></code>
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of <code id="total"></code>
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— <span id="remaining"></span><br/>
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↘<code id="downloadSpeed">0 b/s</code>
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/ ↗<code id="uploadSpeed">0 b/s</code>
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</div>
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</div>
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</div>
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<!-- Include the latest version of WebTorrent -->
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<script src="https://cdn.jsdelivr.net/webtorrent/latest/webtorrent.min.js"></script>
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<!-- Moment is used to show a human-readable remaining time -->
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<script src="http://momentjs.com/downloads/moment.min.js"></script>
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<script>
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var torrentId = 'https://webtorrent.io/torrents/sintel.torrent'
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var client = new WebTorrent()
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// HTML elements
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var $body = document.body
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var $progressBar = document.querySelector('#progressBar')
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var $numPeers = document.querySelector('#numPeers')
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var $downloaded = document.querySelector('#downloaded')
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var $total = document.querySelector('#total')
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var $remaining = document.querySelector('#remaining')
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var $uploadSpeed = document.querySelector('#uploadSpeed')
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var $downloadSpeed = document.querySelector('#downloadSpeed')
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// Download the torrent
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client.add(torrentId, function (torrent) {
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// Torrents can contain many files. Let's use the .mp4 file
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var file = torrent.files.find(function (file) {
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return file.name.endsWith('.mp4')
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})
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// Stream the file in the browser
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file.appendTo('#output')
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// Trigger statistics refresh
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torrent.on('done', onDone)
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setInterval(onProgress, 500)
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onProgress()
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// Statistics
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function onProgress () {
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// Peers
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$numPeers.innerHTML = torrent.numPeers + (torrent.numPeers === 1 ? ' peer' : ' peers')
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// Progress
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var percent = Math.round(torrent.progress * 100 * 100) / 100
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$progressBar.style.width = percent + '%'
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$downloaded.innerHTML = prettyBytes(torrent.downloaded)
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$total.innerHTML = prettyBytes(torrent.length)
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// Remaining time
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var remaining
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if (torrent.done) {
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remaining = 'Done.'
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} else {
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remaining = moment.duration(torrent.timeRemaining / 1000, 'seconds').humanize()
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remaining = remaining[0].toUpperCase() + remaining.substring(1) + ' remaining.'
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}
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$remaining.innerHTML = remaining
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// Speed rates
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$downloadSpeed.innerHTML = prettyBytes(torrent.downloadSpeed) + '/s'
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$uploadSpeed.innerHTML = prettyBytes(torrent.uploadSpeed) + '/s'
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}
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function onDone () {
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$body.className += ' is-seed'
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onProgress()
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}
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})
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// Human readable bytes util
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function prettyBytes(num) {
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var exponent, unit, neg = num < 0, units = ['B', 'kB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB']
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if (neg) num = -num
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if (num < 1) return (neg ? '-' : '') + num + ' B'
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exponent = Math.min(Math.floor(Math.log(num) / Math.log(1000)), units.length - 1)
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num = Number((num / Math.pow(1000, exponent)).toFixed(2))
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unit = units[exponent]
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return (neg ? '-' : '') + num + ' ' + unit
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}
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</script>
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</body>
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</html> |