Send RCON Commands to Quake Based Games

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Introduction

This is my first article on CodeProject.

RCON (Remote Console) is used to manage game servers remotely. RCON commands can be sent through games. But in my recent project, I had to send RCON commands through software. After doing a lot of R&D, I was able to find a way in which Quake based games send RCON commands to the server.

RCON command syntax is as follows:

0xFF 0xFF 0xFF 0xFF 0x02 rcon password command

The first five characters are special and should be sent before any RCON command. Every RCON command should contain the RCON password. I set the RCON password for MOHAA by executing the following command in the console:

set rconpassword 123456

I test the code on MOHAA and Medal of Honor SpearHead. But I think it will work fine on other games which are based on Quake Engine.

Using the Code

I have written a class with the name RCON. It has one method, sendCommand. Pass it a game server IP, port, password and RCON command and this method returns a response from the server.

I use this method for Mohaa as follows:

rcon.sendCommand(txtCommand.Text, txtGameServerIP.Text, "123456", 12203);