How to write a local proxy server in c++?

Question

Qt

Good day! Do not tell me how to implement your local proxy server in c++ - to intercept http/https; Maybe someone faced such a problem and already implemented it, searched the net, but did not find examples. But on the network I found a huge number of examples where you can find out the length of the packet, the destination address, but there is no place where you can parse http by headers. And get even the content of the page. I write everything in qt and I want a solution for both linux and windows. I will be very grateful.

Answer 1

doc.qt.io/qt-5/qnetworkaccessmanager.html
It is cross-platform