Async P2P Chat

Simple peer-to-peer chat application built with Python using asyncio for asynchronous network communication.

Features

• Asynchronous peer-to-peer architecture
• No central server required
• Direct messaging between peers
• Command-line interface
• Automatic peer discovery on local network
• Encrypted messages using TLS

Requirements

• Python 3.7+
• pytest
• poetry

Installation

git clone url cd async-p2p-chat poetry install

Usage

1. Start the chat client:

poetry run python chat.py

2. Available commands:

connect <ip:port> - Connect to a peer disconnect <per> - Disconnect from current peer list - List connected peers send <message> <per> - Send message to a peer quit - Exit application help - Show available commands

How it works

The application uses asyncio to handle multiple concurrent connections. Each peer acts as both server and client, allowing direct communication between nodes. Messages are encrypted using TLS to ensure security.

Key components:

• Network discovery service
• Async message handler
• Peer connection manager
• Encryption layer

Project Structure

. ├── chat.py # Main application file ├── peer.py # Peer connection handling ├── discovery.py # Network discovery service ├── crypto.py # Encryption utilities ├── config.py # Configuration settings ├── pyproject.toml # Poetry configuration └── poetry.lock # Poetry lock file

Contributing

1. Fork the repository
2. Create a feature branch
3. Commit your changes
4. Push to the branch
5. Create a Pull Request

License

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