currently this is a Proxy Server for the Raspberry Pi to control GPIO pins through a web ui

Flask - Client/http-Server -> Socket - Server -> GPIO

proxyserver.py -> piserver-main.py -> GPIO

Flask is the http server that acts as the client to the Socket Server

give your Pi a static IP address

https://www.modmypi.com/blog/tutorial-how-to-give-your-raspberry-pi-a-static-ip-address