PeerDrop 🌐💨

A privacy-focused, peer-to-peer (P2P) file sharing app — fast, secure, and serverless.

PeerDrop lets you share large files directly between devices using WebRTC. No file ever touches a server. No storage. No spying. Just pure, encrypted transfer — from you to your peer.

🔧 Tech Stack

| Layer | Tech | |------|------| | Frontend | HTML, Tailwind CSS, JavaScript | | Core Logic | WebRTC DataChannel | | Signaling Server | Node.js + Express + Socket.io | | TURN/STUN | Google STUN servers |

🛠 Features

• 🔒 End-to-End Encrypted via WebRTC
• 🚫 No cloud storage
• ⚡ Instant connection with QR code or sharing code
• 📁 Unlimited file size (limited by RAM + connection)
• 🌍 Works across devices (mobile to PC, etc.)

🚀 How It Works

1. Peer A opens the website and drops a file.
2. A WebRTC offer is created and shared via a link or QR code.
3. Peer B opens the link → signaling handshake via server.
4. Once connected, file is streamed from A to B via WebRTC.
5. File never touches a third-party server.

🏗️ Project Structure

peerdrop/
├── public/                # Static assets (icons, favicon, etc.)
├── src/
│   ├── index.html         # Entry HTML
│   ├── 404.html           # 404 error page
│   ├── styles/            # CSS styles
│   │   └── main.css       # Tailwind CSS
│   └── js/                # JavaScript files
│       └── app.js         # Core WebRTC logic
├── server/
│   ├── index.js           # Express + Socket.io Signaling Server
│   └── config.js          # TURN/STUN configs
├── workers-site/          # Cloudflare Workers configuration
│   ├── index.js           # Worker script
│   └── package.json       # Worker dependencies
├── wrangler.toml          # Cloudflare Wrangler config
├── README.md
└── package.json

🧠 WebRTC Flow Summary

• RTCPeerConnection is used to create a connection.
• createOffer() and createAnswer() are exchanged via Socket.io.
• Files are streamed through DataChannel.

🧪 Local Development

# Clone the repo
git clone https://github.com/sh20raj/peerdrop.git

# Install dependencies
cd peerdrop
npm install

# Start the server
npm start

# For development with auto-restart
npm run dev

Then open http://localhost:3000 in your browser.

🌐 Deployment

Cloudflare Pages Deployment

Method 1: Using Wrangler CLI

1. Install Wrangler CLI:

npm install -g @cloudflare/wrangler

2. Authenticate with Cloudflare:

wrangler login

3. Update your Cloudflare account details in wrangler.toml:

account_id = "your-account-id" # Replace with your Cloudflare account ID
zone_id = "your-zone-id"       # Replace with your Cloudflare zone ID (if applicable)

4. Build the project:

npm run build

5. Deploy to Cloudflare Pages:

npm run deploy

Method 2: Using Cloudflare Dashboard

1. Build the project:

npm run build

2. Go to the Cloudflare Pages dashboard

3. Click "Create a project"

4. Connect your GitHub repository

5. Configure your build settings:

• Build command: npm run build
• Build output directory: src
• Root directory: /

6. Click "Save and Deploy"

Signaling Server Deployment

The signaling server needs to be deployed separately:

• Deploy the server directory to a Node.js hosting service like Heroku, Render, or Railway
• Update the signalingServerUrl in workers-site/index.js to point to your deployed signaling server
• For production, consider setting up a dedicated TURN server for better NAT traversal

🤝 Contributing

Contributions are welcome! If you want to:

• Improve UI
• Add QR scan support
• Make a desktop/mobile app version
• Add password-protected file sharing

Fork the repo and open a PR 🚀

📜 License

MIT License

💡 Inspiration

Inspired by ToffeeShare, built with love and curiosity ❤️