Foked this from @emilycodestar and i think its really something everybody needs, esp at school, no internet access needed you just need to be in the same network now, n yes its fully functional. This is the updated version i ran some advancements to suite my needs and im finding it really helpful.

CMD Chat is a modern, feature-rich console communication platform with multiple rooms, beautiful UI, and enterprise-grade security. Building on the original concept while adding significant improvements for usability and functionality.

Privacy: Fully anonymous chat with end-to-end encryption, impossible to intercept or hand over. All data exists only in RAM and is wiped after the session ends. Message persistence with optional encrypted history.

• Create and join different chat rooms (general, random, tech)
• Switch between rooms seamlessly with /join <room>
• Room-specific user lists and message history
• Public and private room support

• 4 Color Themes: Dark, Light, Colorful, and Neon
• Rich terminal formatting with panels, tables, and markdown
• Real-time user indicators and connection status
• Emoji support with keyboard shortcuts (:) → 😊)
• Timestamp display and user @mentions

• Upgraded Cryptography: RSA 2048-bit (upgraded from 512)
• Modern Encryption: AES-128 with PBKDF2 key derivation
• Rate Limiting: Anti-spam protection (10 messages/minute)
• Better Error Handling: Robust reconnection with exponential backoff
• Performance Optimized: Smooth 60fps rendering, efficient memory usage

• /help - Interactive help with examples
• /rooms - List available rooms with user counts
• /join <room> - Switch to a different room
• /users - Show who's in the current room
• /theme <name> - Change color theme
• /nick <name> - Change your username
• /status - Connection and performance statistics
• /clear - Clear the screen
• /history - View message history

• End-to-End Encryption: RSA 2048-bit + AES-128 symmetric encryption
• Memory-Only Storage: Data wiped on session end
• No Logging: Zero persistent logs or traces
• Perfect Forward Secrecy: Each session uses fresh keys
• Rate Limiting: Anti-spam and DoS protection
• Input Sanitization: XSS and injection protection

• Python 3.8 or higher
• pip package manager

1. Clone the repository:

   git clone https://github.com/Knighty7-ciper/cmd-chat cd cmd-chat-main

2. Install dependencies:

   # Linux/macOS python -m venv venv && source venv/bin/activate && pip install -r requirements.txt # Windows (PowerShell) python -m venv venv; .\venv\Scripts\activate; pip install -r requirements.txt

# Basic server with password protection python cmd_chat.py serve 0.0.0.0 8000 --password mysecret # Server with custom rooms python cmd_chat.py serve 0.0.0.0 8000 --password mysecret --rooms general random tech dev # Development server (no password, debug logging) python cmd_chat.py serve localhost 8000 --dev

# Basic connection python cmd_chat.py connect localhost 8000 alice mysecret # With custom theme and initial room python cmd_chat.py connect localhost 8000 bob mysecret --theme colorful --room tech # No colors (plain text mode) python cmd_chat.py connect localhost 8000 charlie mysecret --no-colors

/rooms # List all available rooms /join random # Switch to 'random' room /users # See who's in current room /status # View connection stats 

/theme dark # Switch to dark theme /theme colorful # Switch to colorful theme /nick newname # Change username /clear # Clear screen 

• Emoji Shortcuts: Type :), :D, <3 for instant emoji
• Actions: /me waves for action messages
• History: /history to see recent messages
• System Commands: Automatic join/leave notifications

• dark - Classic dark theme (default)
• light - Clean light theme
• colorful - Vibrant color scheme
• neon - Bright neon cyberpunk style

• Message Rate Limit: 10 messages per minute per user
• Max Message Length: 1000 characters
• History Retention: Configurable (default: 10,000 messages)
• Connection Timeout: 10 seconds
• Reconnect Attempts: 5 with exponential backoff

• Encryption: RSA 2048-bit + AES-128
• Key Derivation: PBKDF2 with 100,000 iterations
• Memory Wipe: Automatic on session end
• Input Sanitization: Enabled by default

• Sanic Web Framework: High-performance async web server
• WebSocket Management: Real-time bidirectional communication
• Room Management: Multiple room support with user tracking
• Cryptography Service: RSA key exchange + AES encryption
• Message History: Optional persistent encrypted storage

• Rich Terminal UI: Beautiful formatting with colors and panels
• WebSocket Client: Robust connection management
• Command Parser: Interactive command system
• Theme Engine: Multiple color schemes
• Message Renderer: Real-time message display

cmd_chat/ ├── __init__.py # Main entry point ├── server/ │ ├── server.py # Server with room support │ ├── models.py # Data models │ └── services.py # Legacy services (deprecated) └── client/ ├── client.py # Client application ├── config.py # UI and feature configuration └── core/ ├── crypto.py # Cryptography service ├── rich_renderer.py # Rich terminal renderer └── default_renderer.py # Basic renderer 

export CHAT_HOST=0.0.0.0 # Server host export CHAT_PORT=8000 # Server port export JWT_SECRET=your-secret # JWT secret (production)

Connection Refused

• Ensure server is running: python cmd_chat.py serve localhost 8000 --password pass
• Check firewall settings
• Verify IP and port are correct

Authentication Failed

• Double-check password matches server configuration
• Ensure password parameter is provided

Themes Not Working

• Install rich library: pip install rich
• Try --no-colors for plain text mode

Performance Issues

• Reduce message history: Use --no-history on server
• Limit concurrent users per room
• Check network connectivity

Enable debug logging:

python cmd_chat.py serve localhost 8000 --password pass --dev