If you are looking to serve a .rar file from a local server to a user, here is a standard implementation: javascript
Knowing the URL structure or the API you're interacting with will allow me to write the specific request logic. Generic Example (Node.js/Express)
Is this a file hosted on a private server, a specific cloud storage provider (like AWS S3 or Google Drive), or a database? What is your tech stack?js), PHP , or another language?