Showing IP address of client when page is opened and when file received

Objective -
Showing the IP address of the Client who opened the page and showing IP of the client who uploaded the file after upload received.

Prototype message want:-
- when opened.
Someone at xxx.xx.xxx.xxx has opened your page.
- when received.
File received from xxx.xx.xxx.xxx .

The issue is about adding IP address logging to a Flask-based file-sharing CLI. Look at the Flask app's request handling, likely in the main server file, to capture the client's IP when a page is accessed and when a file is uploaded. The IP can be obtained from request.remote_addr. Add log messages or display them in the console as specified. Check existing routes for file upload and page serving to see where to insert the logging.

索引モデルが issue の本文から書いたものです。