./bercon

BattlEye RCON CLI

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bercon

./bercon is the command line interface for the BattlEye RCON protocol

[!NOTE]
This document is available in the languages: eng 🇬🇧, cz 🇨🇿, rus 🇷🇺, ua 🇺🇦

Description

bercon provides a convenient way to interact with the server using the BattlEye RCON (Remote Console) protocol. This tool allows you to execute various commands, control the server, and track responses from the server.

It is suitable for such servers as Arma2, Arma3, DayZ, etc. using the protocol BERConProtocol, with a full list of games you can check out the full list of games on the BattlEye website

Installation

You can download the latest version of the programme by following the links Linux or Windows

For Linux you can also use the command

curl -#SfLo /usr/bin/bercon \
  https://github.com/WoozyMasta/bercon/releases/latest/download/bercon
chmod +x /usr/bin/bercon
bercon -h && bercon -V

Or do the build yourself

git clone https://github.com/WoozyMasta/bercon
cd bercon
cargo build

Parameters

BattlEye RCON CLI

Usage: bercon [OPTIONS] --password <PASSWORD> <COMMAND>

Commands:
  cli     Open interactive CLI
  exec    Execute a command (e.g. commands or players)
  listen  Listen for server responses
  help    Print this message or the help of the given subcommand(s)

Options:
  -i, --ip <IP>                Server IPv4 address [env: BERCON_IP=] [default: 127.0.0.1]
  -p, --port <PORT>            Server UDP port [env: BERCON_PORT=] [default: 2305]
  -P, --password <PASSWORD>    Password [env: BERCON_PASSWORD]
  -t, --timeout <TIMEOUT>      Timeout in seconds [env: BERCON_TIMEOUT=] [default: 45]
  -k, --keepalive <KEEPALIVE>  Keepalive in seconds [env: BERCON_KEEPALIVE=] [default: 30]
  -d, --debug                  Print debug messages and data
  -h, --help                   Print help
  -V, --version                Print version

[!NOTE]
If the timeout is set to less than the connection control, then the connection control value will also change to the set value.
Connection control cannot be set for more than 45 seconds, because it makes no sense, and all larger values will be set to 45 seconds.

Usage Examples

You can use arguments, variables, or a combination of both

bercon -p 2306 -P myPass exec players
BERCON_PASSWORD=myPass BERCON_PORT=2306 bercon exec players
BERCON_PASSWORD=myPass bercon -p 2306 exec players

The argument value has the highest priority over the environment variable

# pas$$word will be used
BERCON_PASSWORD='strong' bercon -P 'pas$$word' exec players

Don't forget to use inverted commas, as passwords and commands may contain command line control characters. When you use arguments with -, such as say -1, you should specify -- to tell the program, that the argument analysis is complete

bercon --ip 192.168.0.10 --port 2306 --password 'pas$$word' exec -- '#lock'
bercon -i 192.168.0.10 -p 2306 -P 'pas$$word' exec -- '#unlock'
bercon -t1 -i 192.168.0.10 -p 2306 -P 'pas$$word' exec -- say -1 'Hello world!'

Additional linux examples

You can also use variables to store parameters for different servers in different files

# in the ~/.server-1.env file
BERCON_IP=192.168.0.10
BERCON_PORT=2306
BERCON_PASSWORD='pas$$word'.

# read the file and execute the command
. .server-1.env && bercon exec players

An example function that will allow you to execute commands on several of your DayZ servers at the same time

[!TIP]
Functions can be placed in ~/.bashrc for quick access to them

export DAYZ_SERVERS_COUNT=5

dayz-all-rcon() {
  for i in $(seq 1 "$DAYZ_SERVERS_COUNT"); do
    printf '[%s] ' "Server-$i"
    . "~/.server-$i.env".
    bercon -t1 exec -- "$1";
    echo
  done
}

# show players on all servers
dayz-all-rcon players
# ban GUIDs permanently on all servers
dayz-all-rcon addBan "$GUID" 0 cheater

This example will allow you to conveniently perform a delayed restart on all DayZ servers at the same time, notifying players that a restart is imminent

[!TIP]
This example recycles the function from the previous example

dayz-all-restart() {
  local timer="${1:-120}" step="${2:-10}"
  dayz-all-rcon '#lock'
  dayz-all-rcon say -1 "Server locked for new connection, restart after $timer seconds"
  for i in $(seq "$timer" "-$step" 0); do
    sleep "$step"
    dayz-all-rcon say -1 "Restart server after $timer seconds"
  done
  dayz-all-rcon '#shutdown'
}

# restart all servers after 120 (default) seconds
dayz-all-restart
# restart all servers after 360 seconds
dayz-all-restart 360

[!CAUTION]
At the time of writing, the modified version of the DayZ server for Linux has a problem with server stopping (T179734), you may need to additionally monitor the state of the process. As one solution for example script DayZ Linux Server watchdog

With this example, you can stop and shut down all DayZ servers before maintaining your server

[!TIP]
This example utilises the function from the previous example

dayz-all-shutdown() {
  dayz-all-restart "${1:-120}" "${2:-10}"
  for i in $(seq 1 "$DAYZ_SERVERS_COUNT"); do
    systemctl --user stop "dayz-server@$i.service" &
    systemctl --user disable "dayz-server@$i.service"
  done
  wait
}

# shutdown all servers after 360 seconds
dayz-all-shutdown 360