This is the NFCGate server application using Python 3 and the Google Protobuf library, version 3.

To run, simply start the server using python server.py. You can then connect to the server using the IP address of your device and the default port of 5566.
The server features a plugin system for data filtering. When starting the server, you can specify a list of plugins to be loaded as parameters, e.g. python server.py log. For an example, see the shipped mod_log.py plugin.