Change IP in query string?

Question

Computer networks

Hello!
There is some client application which is started under Windows. It makes HTTP requests to the server using an IP as the URL, not a domain name.
You need to change this IP. It is possible to install additional software (proxy?).
Important: the application does not provide for setting up a connection through a proxy, so please explain how to make the application go to a different address.
Those. needed:
GET 1.2.3.4/example replaced with GET 4.5.6.7/example.
Thank you!

Answer 1

You need a Linux router, squid is in transparent mode on it, url_rewrite rules are configured in squid (usually through external modules) - you can do anything there.

Answer 2

You can specify in the hosts file what to redirect where.