A real-time messaging platform built for the Computer Networking Lab (CSE 312) project at Green University of Bangladesh.
Green Chats enables secure, fast, and user-friendly communication with support for text and emoji messaging using Socket.IO.

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Green Chats is designed to facilitate instant communication between users through a secure login system and real-time messaging. The application demonstrates key networking concepts such as:

• Socket-based real-time communication
• User authentication & data security
• Scalable client-server architecture

This project applies networking fundamentals learned in class to a practical communication tool.

• Improve real-time efficiency and security in chat applications
• Create a lightweight and user-friendly messaging system
• Explore Socket.IO for instant data synchronization

• User Registration & Login with email/password authentication
• Real-Time Messaging powered by Socket.IO
• Emoji Support for expressive communication
• Secure Data Handling with HTTPS and password encryption
• Concurrent User Sessions with minimal latency
• Cross-Platform Compatibility (works across browsers and devices)

Frontend: HTML, CSS, JavaScript

Backend: Node.js, Socket.IO

Database: MongoDB (or MySQL)

Others: Git & GitHub for version control, HTTPS for secure communication

• Node.js
• MongoDB / MySQL
• Modern browser (Chrome, Firefox, Edge)

• Client: Dual-core CPU, 4GB RAM, stable internet
• Server: Quad-core CPU, 8GB RAM, high-speed network

1. Clone the repository

   git clone https://github.com/israil-fakir/Green_Chat.git
   cd Green_Chat

2. Install dependencies

   npm install

3. Configure Environment Variables

   Create a .env file with:

   DB_URI=your_database_connection_string
   PORT=3000

4. Start the server

   npm start

5. Open your browser and visit:

   http://localhost:3000

• Instant message delivery under stable network conditions
• Secure login with proper validation and encryption
• Handles multiple concurrent users without performance degradation
• Clean, intuitive UI for easy navigation

• No file sharing or voice/video calls yet
• No multi-factor authentication (MFA)
• Dependent on stable internet connection
• Limited scalability for extremely high concurrent users

• End-to-end encryption
• Multi-factor authentication
• File sharing & media support
• Voice & video calling
• Offline messaging & message queuing
• Group chat functionality
• AI-based features like chatbots or sentiment analysis

• Md. Israil Fakir (221902125)
• Md. Sabbir Hossain (221902126)
• Nazmul Hossain (221902337)

Course Instructor: Sharifur Rahman
Green University of Bangladesh

This project is for educational purposes as part of Computer Networking Lab coursework.

For questions or feedback, please open an issue on GitHub.