Seeding/downloading

[Tercus]

• WebTorrent version: 0.86.1 (win7) / 0.90.2 (linux)
• Node.js version: 5.8.0 (win7) / 5.10.1 (Linux)

I am trying to seed a file and download that file, but I fail to get it to work. Especially Windows is making it very very hard.

I have two scripts, one for seeding and one for downloading:

var WebTorrent = require('webtorrent')
var client = new WebTorrent()
var file = 'testfile.jpg'

client.seed(file, function (torrent) {
    console.log('Seeding: ' + file)
    console.log(torrent.infoHash)
})

var WebTorrent = require('webtorrent')
var client = new WebTorrent()
var fs = require('fs')

//manually add the infoHash
download = 'b8fee5e1dc746256587df78879d440c3979af750'
console.log('download: ' + download)
client.add(download, { path: '/download/' }, function (torrent) {
    console.log('added torrent')
    torrent.files.forEach(function (file) {
        console.log('Started saving ' + file.name)
        file.getBuffer(function (err, buffer) {
            if (err) {
                console.error('Error downloading ' + file.name)
                return
            }
                fs.writeFile(file.name, buffer, function (err) {
                console.error('Error saving ' + file.name)
            })
        })
    })
})

neither one is showing any errors and yet neither one is working in windows. These are the tests I made:

In linux:

• Use scripts as shown -> failed
• Use webtorrent-hybrid instead of webtorrent -> worked
• Use instant.io to seed files and download with script (webtorrent-hybrid) -> worked
• Use script to seed file (webtorrent-hybrid) and download with instant.io -> worked

In windows

• Use scripts as shown -> failed
• Use webtorrent-hybrid instead of webtorrent -> failed
• Use instant.io to seed files and download with script (webtorrent-hybrid) -> failed
• Use script to seed file (webtorrent-hybrid) and download with instant.io -> failed
• Use download script to get random torrent (sintel-torrent from webtorrent.io) -> worked

I am working behind two routers, but Linux is within a VM and still seems to work, so that can't be it?
Are there any errors in my code, or are there any more tests I could do?

[Tercus]

I changed the download test-code a bit and tried a few other things:

var WebTorrent = require('webtorrent-hybrid')
var client = new WebTorrent()
var fs = require('fs')

var sintel = 'https://webtorrent.io/torrents/sintel.torrent'
var magnet = 'magnet:?xt=urn:btih:c3ac6be00f67c88118c71e4971d12c793b99b954&dn=LtUxcQ1.jpg&tr=udp%3A%2F%2Fexodus.desync.com%3A6969&tr=udp%3A%2F%2Ftracker.coppersurfer.tk%3A6969&tr=udp%3A%2F%2Ftracker.internetwarriors.net%3A1337&tr=udp%3A%2F%2Ftracker.leechers-paradise.org%3A6969&tr=udp%3A%2F%2Ftracker.openbittorrent.com%3A80&tr=wss%3A%2F%2Ftracker.btorrent.xyz&tr=wss%3A%2F%2Ftracker.fastcast.nz&tr=wss%3A%2F%2Ftracker.openwebtorrent.com&tr=wss%3A%2F%2Ftracker.webtorrent.io'

var download = magnet
console.log('download: ' + download)
client.add(download, { path: './download/' }, function (torrent) {
    console.log('added torrent')
})
client.on('torrent', function(torrent) {
    console.log('Established connection')
    torrent.on('done', function() {
        console.log('Finished downloading file')
    })
    torrent.on('download', function(chunksize) {
        console.log('progress: ' + torrent.progress)
    })
})

• Use code to download sintel -> worked
• Use code to download magnet link (instant.io) -> failed

I then went on and tried the webtorrent-desktop app to try and download the exact same magnet link. It took quite a bit of time to connect, but worked in the end.

[Tercus]

I tried copying the method with which webtorrent-desktop is able to download the torrent. So far I haven't managed it, but I did learn a few things and got a few error-messages that were missing before.
New code I used:

var WebTorrent = require('webtorrent-hybrid')
var client = new WebTorrent()
var fs = require('fs')

var sintel = 'https://webtorrent.io/torrents/sintel.torrent'
var magnet = 'magnet:?xt=urn:btih:c3ac6be00f67c88118c71e4971d12c793b99b954&dn=LtUxcQ1.jpg&tr=udp%3A%2F%2Fexodus.desync.com%3A6969&tr=udp%3A%2F%2Ftracker.coppersurfer.tk%3A6969&tr=udp%3A%2F%2Ftracker.internetwarriors.net%3A1337&tr=udp%3A%2F%2Ftracker.leechers-paradise.org%3A6969&tr=udp%3A%2F%2Ftracker.openbittorrent.com%3A80&tr=wss%3A%2F%2Ftracker.btorrent.xyz&tr=wss%3A%2F%2Ftracker.fastcast.nz&tr=wss%3A%2F%2Ftracker.openwebtorrent.com&tr=wss%3A%2F%2Ftracker.webtorrent.io'

var download = magnet
console.log('download: ' + download)
var torrent = client.add(download, { path: './download/' })
addTorrentEvents(torrent)

function addTorrentEvents(torrent) {
    torrent.on('warning', (err) =>
        console.log('warning: ', err.message))
    torrent.on('error', (err) =>
        console.log('error: ', err.message))
    torrent.on('infoHash', () =>
        console.log('infohash: ', torrent.infoHash))
    torrent.on('metadata', torrentMetadata)
    torrent.on('ready', torrentReady)
    torrent.on('done', torrentDone)

    function torrentMetadata () {
        console.log('metadata received')
    }

    function torrentReady () {
        console.log('Torrent ready to download')
    }

    function torrentDone () {
        console.log('Torrent downloaded')
    }
}

Error-messages I received:

D:\Programming\Projects\web\crowder\tests>node download-test.js

(electron) ipc module is deprecated. Use require("electron").ipcMain instead.
download: magnet:?xt=urn:btih:c3ac6be00f67c88118c71e4971d12c793b99b954&dn=LtUxcQ
1.jpg&tr=udp%3A%2F%2Fexodus.desync.com%3A6969&tr=udp%3A%2F%2Ftracker.coppersurfe
r.tk%3A6969&tr=udp%3A%2F%2Ftracker.internetwarriors.net%3A1337&tr=udp%3A%2F%2Ftr
acker.leechers-paradise.org%3A6969&tr=udp%3A%2F%2Ftracker.openbittorrent.com%3A8
0&tr=wss%3A%2F%2Ftracker.btorrent.xyz&tr=wss%3A%2F%2Ftracker.fastcast.nz&tr=wss%
3A%2F%2Ftracker.openwebtorrent.com&tr=wss%3A%2F%2Ftracker.webtorrent.io
infohash:  c3ac6be00f67c88118c71e4971d12c793b99b954
warning:  connection error to wss://tracker.openwebtorrent.com
warning:  tracker request timed out (started) (udp://exodus.desync.com:6969)
warning:  tracker request timed out (started) (udp://tracker.leechers-paradise.o
rg:6969)
warning:  tracker request timed out (started) (udp://tracker.openbittorrent.com:
80)
warning:  connection error to wss://tracker.openwebtorrent.com
warning:  connection error to wss://tracker.openwebtorrent.com
warning:  connection error to wss://tracker.fastcast.nz
warning:  connection error to wss://tracker.fastcast.nz
warning:  connection error to wss://tracker.openwebtorrent.com
warning:  connection error to wss://tracker.fastcast.nz
warning:  connection error to wss://tracker.openwebtorrent.com

so all in all still same behaviour: sintel downloads fine, instant.io fails

[andreapaiola]

I noticed that

it's fine with
magnet:?xt=urn:btih:6a9759bffd5c0af65319979fb7832189f4f3c35d&dn=sintel.mp4&tr=wss%3A%2F%2Ftracker.btorrent.xyz&tr=wss%3A%2F%2Ftracker.fastcast.nz&tr=wss%3A%2F%2Ftracker.openwebtorrent.com&tr=wss%3A%2F%2Ftracker.webtorrent.io&ws=https%3A%2F%2Fwebtorrent.io%2Ftorrents%2Fsintel-1024-surround.mp4

This doesn't work
magnet:?xt=urn:btih:6a9759bffd5c0af65319979fb7832189f4f3c35d

in the browser

confirmed?

[feross]

@andreapaiola That makes sense. You need to use the full magnet link -- not just an info hash -- in order for the WebTorrent script to find peers in the browser. The webtorrent library no longer appends a default list of trackers when you call client.add with no trackers.

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