A implementation of the RCON protocol on the server side.
rcon-server is primarily designed as a tool for testing, e.g. with unit tests. Installing, running, updating, etc a regular srcds server might use a lot of resources. >10GB of storage space per server is not uncommon. Also it is hard to get some results from an server in a test environment. A server only reports the amount of users which are on the server. Getting several people on a server for testing is pretty annoying and time consuming. rcon-server allows you to implement a function that returns an answer per command.
The RCON Specification can be found here: [https://developer.valvesoftware.com/wiki/Source_RCON_Protocol]
pip install rcon-server
cd rcon_server
python3 -m unittest