🐍 Python Multi-User Chat Application
Secure Chat Server & Client — Cross-Network Communication
© All rights reserved to Daniel Vihorev & Ilay Zendani (Wild Life Cyber Security)
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📌 Project Overview
This project is a lightweight, scalable Python-based chat system built using sockets and the select module. It enables multiple users to communicate in real-time, even if they are not on the same local network. The server handles multiple concurrent client connections, and each client must authenticate with a username and password upon connection.
Ideal for learning about: • Socket programming • Multi-threading • Authentication flow • Client-server architecture
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🚀 Features • 🔐 Login system: Requires username and password at connection • 🌐 Cross-network support: Clients can connect from different networks • 📡 Multi-user chat: Server handles multiple concurrent clients • ⚙️ Non-blocking I/O with select for efficient message handling • 🖥️ Terminal-based interface for simplicity and transparency
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📁 Project Structure
chat-app/ ├── server.py # The main server logic ├── client.py # Client-side application └── README.md # Project documentation
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⚙️ How It Works
Server • Listens for incoming client connections. • On connection, prompts the client to enter username and password. • Authenticates clients and manages message broadcasting using select.
Client • Connects to the server by IP and port. • Sends credentials for authentication. • Can send and receive messages from other users in real-time.
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🛠️ Technologies Used • Python 3.x • socket • select • threading (optional for improvements) • Plain terminal/console interface
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🧪 How to Run
Server
python server.py
Client
python client.py
📝 Make sure to update the server IP and port in client.py before running.
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🔒 Future Improvements • Encryption (TLS or custom) • GUI using Tkinter or PyQt • Persistent user database (e.g. SQLite or MongoDB) • Chat rooms / Private messaging • Logging and audit trails
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👥 Authors • Daniel Vihorev • Ilay Zendani
(Wild Life Cyber Security)
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📜 License
All rights reserved to Daniel Vihorev and Ilay Zendani (Wild Life Cyber Security). For educational or private use only. Commercial usage prohibited without written permission.
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