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Chat Application

Secure, real-time messaging platform

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Project Overview

A modern, feature-rich chat application that enables real-time communication with a focus on security and user experience. Built with WebSocket technology for instant message delivery and end-to-end encryption to ensure privacy.

🔒 End-to-End Encrypted ⚡ Real-time 📱 Cross-platform
💬 Chat Interface Screenshot

Key Features

⚡ Real-time Messaging

  • Instant message delivery
  • WebSocket connections
  • Typing indicators
  • Read receipts

👥 Group Chats

  • Create public/private groups
  • Admin controls
  • Member management
  • Group settings

📎 File Sharing

  • Images and videos
  • Documents and PDFs
  • Drag and drop upload
  • File preview

🔐 Security

  • End-to-end encryption
  • Secure authentication
  • Private conversations
  • Data protection

🔔 Notifications

  • Push notifications
  • Desktop alerts
  • Customizable sounds
  • Notification preferences

😊 Rich Content

  • Emoji reactions
  • GIF support
  • Message formatting
  • Link previews

Advanced Features

🔍 Search

Search through message history with powerful filters

📌 Pinned Messages

Pin important messages to the top of conversations

🎨 Themes

Customize the look with light and dark themes

📱 Mobile Responsive

Works seamlessly on all devices and screen sizes

Technology Stack

React
Socket.io
Express
MongoDB
Node.js
JWT
WebRTC
Redis

Technical Highlights

Architecture & Implementation

  • Socket.io for bidirectional real-time communication
  • End-to-end encryption using Web Crypto API
  • Optimistic UI updates for instant feedback
  • Message queuing for offline support
  • Redis for session management and caching
  • File uploads with chunking for large files
  • Message pagination with infinite scroll
  • Presence detection (online/offline status)
  • Reconnection logic with exponential backoff
  • MongoDB for efficient message storage and retrieval
  • JWT authentication with refresh tokens
  • Rate limiting to prevent spam and abuse

Security & Privacy

🛡️ Security Measures

  • End-to-end encryption for all messages
  • Secure WebSocket connections (WSS)
  • XSS and CSRF protection
  • Input sanitization and validation
  • Secure file upload handling
  • Password hashing with bcrypt
  • Regular security audits
  • GDPR compliance features

Interested in this project?

View the source code or get in touch to discuss similar projects

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