allenkim67/allen-torrent

Learn to build a bittorrent client in node.js

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Install

• You need to have ruby installed in your system.
• Install bundler which helps in specifying and installing dependencies of any Ruby project. gem install bundler
• Go to the root of the repo and run this - bundle install
• Then - bundle exec jekyll serve

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License

• MIT

allen-torrent's Issues

Wrong verification condition for handshake messages?

I think that, in the isHandshake() method, the correct condition check for the "pstr" field is supposed to be:
message.toString('utf8', 1, 1 + message.readUInt8(0)) === "BitTorrent protocol"
instead of:
message.toString('utf8', 1) === "BitTorrent protocol",
because, otherwise, we're comparing <info_hash><peer_id> to "BitTorrent protocol" !

Peer to Peer connect , does need to consider Nat traversal

get peers ip and port from tracker ,
if other peers are behind Nat , does it can tcp connect directly to them ?
if not , how to solve it ?

need to replace 80 to 84

allen-torrent/src/tracker.js

Line 88 in 983355b

buf.writeUInt32BE(0, 80);

Hangs indefinitely

As soon as I run,
node index.js torr.torrent
(torr.torrent is the name of the torrent and its in the root of the project)
everything just hangs.
I don't even get an output for the connected peers.

Also, the torrent I'm using has a lot of peers and it works fine when I use BitTorrent.

Issue with downloading bignum package

I could not install bignum package on MacOS Catalina;

I tried

npm install --save bignum, and,
npm install -g --save bignum

global download is working but after calling node index.js, the program is failing due to bignum.

Get stuck in 99%

Excuse me, I'm having some problems with some torrents. When the download starts, the downloaded file immediately starts to grow really fast, and when it completes it final size, It got stuck in 99%. I think that I have to upload pieces that I just download to download remaining pieces.

If I try downloading this same torrent with other client it works normally.

Any idea?
Thanks.

Regards,

Not getting any peers

So far following the tutorial I have completed till the part where we can get Peers.
For some reason in my getPeers function the program never goes inside socket.on("message" , (res) => {console.log("Connected")}
Here is my repo.
Any help is appreciated been stuck here for a while now.

OS: WSL Ubuntu
Node: 22.2.0
NPM: 10.7.0

When running
sudo tcpdump -i any udp -v
I am able to see that a response is coming from the tracker server

Error: connect ECONNREFUSED and Error: connect ETIMEDOUT

i'm receiving an error like this
Error: connect ECONNREFUSED 118.70.180.108:34105
at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1141:16) {
errno: 'ECONNREFUSED',
code: 'ECONNREFUSED',
syscall: 'connect',
address: '118.70.180.108',
port: 34105
}

and

Error: connect ETIMEDOUT 197.185.113.183:63659
at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1141:16) {
errno: 'ETIMEDOUT',
code: 'ETIMEDOUT',
syscall: 'connect',
address: '197.185.113.183',
port: 63659
}

hangs after it opens the torrent

Hi Allen, i wanted to use allen-torrent as a quick way to download torrents after i have searched a few torrent APIs as part of a school project, however there is no documentation (granted this, i assume was a tut).

When i try:

node index.js path/to/file-torrent

It just hangs, no information before the hang either. I am quite sure i added all the npm dependencies. Why does it just hang?

No response to connect request.

Hey Allen,
Even after trying multiple healthy torrents (with UDP trackers), when I run index.js, it hangs and doesn't proceed.
I debugged a little and noticed that the socket.on('message', ...) is not being run at all, meaning that the tracker is not sending a connect response.
Do you have any idea what might be the problem?

Tutorial link in readme is broken (404)

Error in buildBitField() in messages.js

allen-torrent/src/message.js

Line 73 in c7c204d

const buf = Buffer.alloc(14);

As per the spec doc,
https://wiki.theory.org/BitTorrentSpecification#Messages

The size of bitfield message is variable, depending upon length of bitfield.

fix :
const buf = Buffer.alloc(bitfield.length + 1 + 4);

Help to run the project.

Can anyone show me the step, how to get this project running on my computer?

What are the steps to get this web-torrent open in my browser?

basically, i am a total newbie so how to deploy this project?