🔗 DrizLink - P2P File Sharing Application 🔗

A peer-to-peer file sharing application with integrated chat functionality, allowing users to connect, communicate, and share files directly with each other.

✨ Features

• 👤 User Authentication: Connect with a username and maintain persistent sessions
• 💬 Real-time Chat: Send and receive messages with all connected users
• 📁 File Sharing: Transfer files directly between users
• 📂 Folder Sharing: Share entire folders with other users
• 🔍 File Discovery: Look up and browse other users' shared directories
• 🔄 Automatic Reconnection: Seamlessly reconnect with your existing session
• 👥 Status Tracking: Monitor which users are currently online
• 🎨 Colorful UI: Enhanced CLI interface with colors and emojis
• 📊 Progress Bars: Visual feedback for file and folder transfers

🚀 Installation

Prerequisites

• Go (1.16 or later) 🔧

Steps

1. Clone the repository ⬇️

git clone https://github.com/yourusername/drizlink.git
cd drizlink

2. Build the application 🛠️

go build -o drizlink

🎮 Usage

Starting the Server 🖥️

./drizlink server --port 8080

Connecting as a Client 📱

./drizlink client --server 127.0.0.1:8080 --username YourName --path /path/to/shared/folder

🏗️ Architecture

The application follows a hybrid P2P architecture:

• 🌐 A central server handles user registration, discovery, and connection brokering
• ↔️ File and folder transfers occur directly between peers
• 💓 Server maintains connection status through regular heartbeat checks

📝 Commands

Chat Commands 💬

Command	Description
/help	Show all available commands
/status	Show online users
exit	Disconnect and exit the application

File Operations 📂

Command	Description
/lookup <userId>	Browse user's shared files
/sendfile <userId> <filePath>	Send a file to another user
/sendfolder <userId> <folderPath>	Send a folder to another user
/download <userId> <filename>	Download a file from another user

Terminal UI Features 🎨

• 🌈 Color-coded messages:

  • Commands appear in blue
  • Success messages appear in green
  • Error messages appear in red
  • User status notifications in yellow

• 📊 Progress bars for file transfers:

  [===================================>------] 75% (1.2 MB/1.7 MB)
  

• 📁 Improved file listings:

  === FOLDERS ===
  📁 [FOLDER] documents (Size: 0 bytes)
  📁 [FOLDER] images (Size: 0 bytes)
  
  === FILES ===
  📄 [FILE] document.pdf (Size: 1024 bytes)
  📄 [FILE] image.jpg (Size: 2048 bytes)
  

🔒 Security

The application implements basic reconnection security by tracking IP addresses and user sessions.

Made with ❤️ by the DrizLink Team