Transfer.coffee is a simple Node.js web application that allows users to share files using WebTorrent. Users can upload files, generate mnemonic seeds, and share these seeds with others to download the files directly via peer-to-peer connections. The application supports optional configuration of STUN and TURN servers to facilitate NAT traversal.
## Features
- Peer-to-peer file sharing using WebTorrent
- Mnemonic seed generation for easy file sharing
- Optional STUN and TURN server configuration for NAT traversal
- Progress indicators for file upload and download
- Configurable tracker URL
- Bundled WebTorrent tracker
## Prerequisites
- Node.js (tested with v22.3 but anything recent should work)
3. Optional, but recommended for production: Put the application (:8105) and the tracker (:8106) behind a reverse proxy (e.g. Caddy or nginx) and configure SSL.
2. Create a `.env` file in the root directory of the project and set the environment variables:
```bash
TRACKER_URL="wss://tracker.your-domain.com" # URL of the WebTorrent tracker - default: ws://localhost:8106, use wss:// for secure connections
STUN_SERVER_URL="stun:stun.nextcloud.com:443" # Optional - there are public STUN servers available - not used if unset
TURN_SERVER_URL="turn:your-turn-server-url" # Optional - you would need to set up your own TURN server - don't set this if you don't have one
TURN_SECRET="your-static-auth-secret" # Required if you have a TURN server - don't set this if you don't have one
```
If you are using a reverse proxy, you should set the `TRACKER_URL` to the URL of the tracker behind the reverse proxy, e.g. `wss://tracker.your-domain.com`.
The STUN and TURN server URLs should be set to the public URLs of your STUN and TURN servers, if you have them.
