Receiving data from the site

Here is my task:
The program should fill in the form on the site, then send it and take some of them from the data (for example, data from a tag with some identifier in a variable)
How to do it?

I tried to do it myself, but nothing came of it :frowning:

Have you tried the Actix-web framework?

It has bits of functionality helpful in such typical website related tasks.