gistfile1.txt

<script src="https://cdn.jsdelivr.net/webtorrent/latest/webtorrent.min.js"></script>
<script>
var client = new WebTorrent()
var xhttp;
if (window.XMLHttpRequest) {
    xhttp = new XMLHttpRequest();
    } else {
    // code for IE6, IE5
    xhttp = new ActiveXObject("Microsoft.XMLHTTP");
}

client.on('error', (err) => {
	console.error('ERROR: ' + err.message)
})

document.querySelector('form').addEventListener('submit', function (e) {
	e.preventDefault() // Prevent page refresh
	
	var selectedFiles = document.querySelector('form input[name=file]').files
	var fto = []
	for (var i = 0; i < selectedFiles.length; i++) {
		fto.push(selectedFiles.item(i))
	}
	console.log('Adding: ' + fto)
	client.seed(fto, { announceList: [['https://localhost:8080'], ['udp://localhost:8080'], ['ws://localhost:8080']] })
})

client.on('torrent', function (torrent) {
  //tell Node that it is supposed to download now.
	xhttp.open('POST', 'http://localhost/upload', true)
	xhttp.send(torrent.infoHash)
})

</script>