xypd

xypd is a secure, peer-to-peer file transfer application powered by Go, WebAssembly (WASM), and WebRTC. It allows you to share files of any size directly between devices without storing them on a server.

Features

• Peer-to-Peer: Direct transfer between clients. No data is stored on the server.
• Secure: End-to-end encryption via WebRTC.
• Unlimited File Size: Smart chunking (16KB) allows transferring large files reliably.
• Simple & Fast: No passwords required. Just share the 6-character Room ID.
• Modern UI: Drag and drop support with real-time progress tracking.
• Go Everywhere: Backend in Go, Frontend logic in Go (WASM).

Tech Stack

• Server: Go (Gorilla WebSocket) for signaling.
• Client: Go (compiled to WASM) for WebRTC logic.
• Frontend: HTML5, CSS3, JavaScript (glue code).
• Deployment: Docker, Railway, Render.

Local Development

1. Prerequisites: Go 1.23+
2. Run:

   make run

   Access at http://localhost:8080.

Deployment

Railway / Render

This project is ready for deployment on Railway or Render.

1. Push to GitHub.
2. Connect repository to Railway/Render.
3. The Dockerfile handles the multi-stage build (Go server + WASM client).

Security

• Room ID: 6-character alphanumeric ID for easy but secure sharing.
• CSP: Strict Content Security Policy to prevent XSS.

Contributing

Feel free to contribute! Open an issue or submit a pull request if you have ideas for improvements or new features.

License

This project is licensed under the MIT License - see the LICENSE file for details.