How to redirect from one domain to another?

Question

Computer networks

I have a client application that accesses my server with an https request.
I want to write a second application that will change the address of my server to localhost and accept / respond to a request. Approximately such functionality is available in Open Server, when we create a domain folder, and it redirects all windows requests to example.com to open server

But there is one problem. I wrote a python server that runs on localhost:80, made a temporary redirect in the host file.
Example of my request:
example.com/api/sayhello
Without a redirect will return 200, with a redirect to host "localhost example.com" it will return 404, I think because it only refers to the example.com domain. I xs why he addresses only to the domain.
Python took only because you can quickly sketch a server, but I did not think that there would be a big problem in the redirect.
Why is 404 returned? Maybe there is a better way than redirecting via host ?
Maybe via c++ immediately change the address of the package to example.com on localhost ?

Answer 1

I'm sorry, one fable comes to mind, there's something about glasses ... It's not python's fault here, and not the programming language, but the lack of knowledge about:
- dns
- tcp / ip
- http
- operating system and in particular the hosts file
1) show your hosts
2) from which computer and where are you accessing?
3) does what you want work on localhost:80 ?
PS, if there is something to change, in assembler - definitely!