How to write a proxy server for android?

Question

Java

I'm trying to write a proxy server that will work on an android device, to which you can connect from another device and redirect all your traffic through it.
I wanted to do it using sockets, but I don’t understand how to work with packets on the server, so that the request would be on behalf of this server. Does anyone have any ideas about this?

Answer 1

 There is a solution!
Here is this repository to help those who want to implement this!

Answer 2

Have a look at this thread, it might work for you.
How to make a proxy server from android behind NAT?