SendIt: Secure Direct File Sharing

SendIt offers a secure, serverless method to directly share files between users, facilitated by WebSockets. This Python Flask-based application ensures files are transferred peer-to-peer without ever being stored on a server, preserving privacy and reducing dependency on cloud storage.

Features

• Direct Peer-to-Peer Transfers: Utilizes WebSockets for real-time, direct file sharing without server storage.
• Temporary Transfer Codes: Generates temporary codes for file transfers, which expire after 10 minutes to secure each transaction.
• Real-Time Notifications: Updates senders and receivers about file status, including download progress and time until expiry.
• Web Interface: Simple, intuitive web-based interface for easy file transfers from any modern browser.

Technologies

• Backend: Python Flask with Flask-SocketIO for handling WebSocket connections.
• Frontend: HTML5, CSS3, and Vanilla JavaScript for a dynamic user experience.

Installation and Setup

1. Clone the repository:

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

2. Install dependencies:

   pip install Flask Flask-SocketIO
   

3. Run the application:

   python app.py
   

Usage

• Uploading a File: Drag and drop a file into the web interface or click to select a file. A unique code will be generated.
• Downloading a File: Enter the code received from the sender to begin the direct download.

Workflow

sequenceDiagram
    participant Sender
    participant WebInterface
    participant Receiver

    Sender->>WebInterface: Starts file upload
    WebInterface->>Sender: Provide unique code
    Sender->>Receiver: Share unique code
    Receiver->>WebInterface: Enter unique code
    WebInterface->>Sender: Notify file ready for download
    Sender->>Receiver: Transfer file directly
    Receiver->>Sender: Notify file received
    Receiver->>WebInterface: Transfer completed

    Note right of WebInterface: Once file transfer is completed, the connection is closed and resources are cleaned up.

Contributing

Contributions to enhance functionality, improve design, or fix bugs are always welcome. Please fork the repository, make your changes, and submit a pull request.