Add an HTTP endopoint to resolve magnet URL to bytes (address #177)

[ikatson]

curl -v --data-raw 'magnet:?...' http://localhost:3030/torrents/resolve_magnet > /tmp/file.torrent

[josecelano]

Hi @ikatson Thank you so much! Looks good! Just a couple of things:

Missing info key

I've tried with a torrent, and the response is:

{
   "length": 4932407296,
   "name": "ubuntu-23.04-desktop-amd64.iso",
   "piece length": 262144,
   "pieces": "<hex>OMITTED</hex>"
}

and it should be:

{
   "info": {
      "length": 4932407296,
      "name": "ubuntu-23.04-desktop-amd64.iso",
      "piece length": 262144,
      "pieces": "<hex>OMITTED</hex>"
   }
}

That's the torrent file in JSON format (by using https://chocobo1.github.io/bencode_online/).

Timeout for the endpoint

It seems there is no timeout if the client can't find the torrent. That's not a problem for me because I can't put the timeout in the API client, but it would be good for the server. Some examples: torrust/torrust-index#467

[ikatson]

Fixed the first one, please check

For the timeout one, there are no timeouts anywhere in HTTP API, so this would be a separate issue / PR

[josecelano]

Fixed the first one, please check

For the timeout one, there are no timeouts anywhere in HTTP API, so this would be a separate issue / PR

Hi @ikatson, It works!

Just for the record, I'm testing this way:

Run the client with:

cargo run server start ~/Downloads/TorrentSeeds/

Download the torrent from the magnet link:

curl -v --data-raw 'magnet:?xt=urn:btih:443c7602b4fde83d1154d6d9da48808418b181b6' http://localhost:3030/torrents/resolve_magnet > ~/Downloads/Torrents/2024-08-13-ubuntu-23.04-desktop-amd64.iso.torrent

The downloaded torrent (2024-08-13-ubuntu-23.04-desktop-amd64.iso.torrent) in JSON format (omitting pieces) using https://chocobo1.github.io/bencode_online/:

{
   "announce": "",
   "announce-list": [
      []
   ],
   "info": {
      "length": 4932407296,
      "name": "ubuntu-23.04-desktop-amd64.iso",
      "piece length": 262144,
      "pieces": "<hex>OMITTED. TOO BIG</hex>"
   }
}