1.1 The Socket Server is a Windows Form running in Visual Studio 2017 Community, written by Python with IronPython 2.7 (32 bit) 1.2 The Socket Client is running in your EV3 Brick installed with EV3Dev ...
Codatex RFID Sensor for NXT (http://www.codatex.com/lego-sensor.html) also works with the EV3 (at least with LeJOS and RobotC) but there is no driver yet for ev3dev ...