🔒 P2P Secure Chat

Live At : https://p2p-chat-x.onrender.com/ (Enjoy With #er)

A secure, private, and minimalist Peer-to-Peer (P2P) chat application built for confidentiality and performance.

✨ Key Features

🛡️ Security & Privacy

• End-to-End Privacy: Uses WebRTC for direct P2P data transfer. Video and Chat data flows directly between users, not the server.
• Secure Authentication: Full login system backed by SQLite and bcrypt. No anonymous lurking.
• Room-Based Architecture: Users are dynamically paired in private isolated rooms (socket.io rooms). No broadcasting to the public lobby.
• Data Minimization: The server only acts as a signaling relay. Chat history is not persisted on the server.

🎨 Modern Minimalist UI

• Theme: Clean Black & White. High-contrast, professional aesthetics using TailwindCSS v4.
• Responsive: Mobile-first design.
• Status Indicators: Visual cues for connection state (🔴 Offline, 🟡 Waiting, 🟢 Paired).
• Smart Features:
  • Reply System: Click any user name or double-click a message to quote and reply.
  • Rich Notifications: Random fun sound effects on new messages.

⚙️ Industry-Standard Engineering

• Containerized: Fully Dockerized with Dockerfile and docker-compose.yml.
• Tested: Integrated Jest testing suite for authentication logic.
• Configurable: Environment variables managed via .env.

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🚀 Getting Started

Prerequisites

• Node.js (v18+)
• npm

Installation

1. Clone the repository

   git clone https://github.com/Priyanshu-x/p2p-chat.git
   cd p2p-chat

2. Install Dependencies

   npm install

3. Setup Environment Create a .env file in the root directory:

   PORT=3000
   SESSION_SECRET=your_super_secret_key_here
   NODE_ENV=development

4. Build Styles (Compiles TailwindCSS)

   npm run build:css

Running the App

Development Mode:

npm start

Visit http://localhost:3000.

Run Tests:

npm test

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🐳 Docker Deployment

For a consistent production environment, run with Docker:

docker compose up --build

The app will be available at http://localhost:3000.

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🛠️ Tech Stack

• Frontend: HTML5, Vanilla JS, TailwindCSS v4
• Backend: Node.js, Express
• Real-time: Socket.io, WebRTC (STUN/TURN ready)
• Database: SQLite (via connect-sqlite3)
• Security: Helmet, Rate-Limit, CSURF protection ready
• DevOps: Docker, Jest

📡 Deployment Note

This application uses WebSockets (Socket.io).

• DO NOT DEPLOY TO VERCEL (Serverless functions kill WebSocket connections).
• Recommended Platforms: Render, Railway, Heroku, or any VPS (DigitalOcean/AWS EC2).

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🤝 Contributing

1. Fork the Project
2. Create your Feature Branch (git checkout -b feature/AmazingFeature)
3. Commit your Changes (git commit -m 'Add some AmazingFeature')
4. Push to the Branch (git push origin feature/AmazingFeature)
5. Open a Pull Request