DFOS: Distributed File Orchestration and Synchronization

A multi-client file transfer system built with Python, featuring a robust client-server architecture for handling concurrent file operations.

Architechture

Features

• User Authentication: Secure client login based on a predefined username and password list.
• Concurrent Client Handling: Uses a thread pool to manage multiple client connections simultaneously without data loss.
• User-Specific Storage: Automatically creates and manages a dedicated storage directory for each authenticated user.
• File Operations:
  • Upload: Securely upload files to the user's dedicated directory.
  • Download: Download files from the server.
  • Preview: View the first 1024 bytes of a file without downloading the entire content.
  • Delete: Remove files from the user's server-side directory.
• Performance Logging: Tracks server performance, including connections and file transfer metrics, to a log file.
• Graceful Shutdown: A signal handler ensures the server can shut down safely, logging final performance stats.

Technologies Used

• Python 3
• socket: For core network communication.
• threading & ThreadPoolExecutor: For handling multiple clients concurrently.
• os: For file system operations on the server.
• logging: For detailed performance and event logging.
• psutil: To monitor system resources (CPU/Memory) on shutdown.

Running the System

1. Clone the repository:

   git clone https://github.com/sumukhacharya03/DFOS.git
   cd DFOS

2. Configure Users: Edit the id_passwd.txt file to add or change user credentials.

   user1:password123
   user2:newpassword
   

3. Start the Server: Open a terminal and run the server script.

   python server.py

   The server will start listening on port 5000.

4. Run the Client: Open a second terminal to run the client.

   python client.py

   You will be prompted for your username and password to connect.