man freeciv-server (6): The server for the Freeciv game

SYNOPSIS

Auth aware servers have additional parameters: [ -a|--auth ] [ -D|--Database file ] [ -G|--Guests ] [ -N|--Newusers ]

Servers with AI module support have an additional parameter: [ -L|--LoadAI module ]

DESCRIPTION

Freeciv is a free turn-based multiplayer strategy game, in which each player becomes the leader of a civilization, fighting to obtain the ultimate goal: To become the greatest civilization.

Players of Civilization II® by Microprose® should feel at home, since one aim of Freeciv is to have compatible rules.

Freeciv is maintained by an international team of coders and enthusiasts, and is easily one of the most fun and addictive network games out there!

This is the server program used to establish a Freeciv server - see also freeciv-client(6) .

This manual page only lists the command line arguments. For details of the directives necessary to configure freeciv-server see the Server Manual which can be found at the Freeciv website as well as the documentation which is part of the Freeciv distribution.

OPTIONS

The following options are accepted on the command line of the server. They may not be combined; that is, "freeciv-server -fp savegame.sav 5557" will not work, instead you would need to enter "freeciv-server -f savegame.sav -p 5557". Most options have a short form (single hyphen and single letter) and a long form (double hyphen and a complete word); their effects are identical.

-A protocol, --Announce protocol

Uses protocol when announcing game in LAN. Possible values for protocol are:

IPv4

IPv6

none

-a, --auth

Enables server authentication and allows access to registered players only. Requires the --Database option to be specified.

-b address, --bind address

Sets the address on which the server will listen for clients.

-B address, --Bind-meta address

Sets the address which request to metaserver are sent from. Defaults to address given by -b option.

-d level_number, --debug level_number

Sets the amount of debugging information to be logged in the file named by the -l option. Acceptable values for the level_number are:

0 for fatal messages only.

1 for fatal and error messages.

2 for fatal, error and normal messages (default).

3 for fatal, error, normal, and verbose messages.

-D filename, --Database filename

Specifies a database configuration file for authentication. This file specifies the details of the database. See README.fcdb in the Freeciv distribution for details of its format.

-e, --exit-on-end

When a game ends, exit instead of restarting.

-F [ signal_number ], --Fatal [ signal_number ]

Raise a custom signal on failed assertion. If signal_number is not specified, then the ABRT signal will be used.

-f filename, --file filename

Loads a saved game (filename) into the server before initialization, instead of starting a new game. This is for reloading saved games, or for loading scenarios. See ENVIRONMENT for where the server looks for these files.

The distribution comes with several scenarios, typically stored in /usr/local/share/freeciv/scenarios, for example:

• british-isles-85x80-v2.80.sav

• earth-160x90-v2.sav

• earth-80x50-v3.sav

• europe-200x100-v2.sav

• hagworld-120x60-v1.2.sav

• iberian-peninsula-136x100-v1.0.sav

-G, --Guests

Allow guests to login as 'guest' when authentication is enabled.

-h, --help

Prints out a description of the command line options and exits.

-i address, --identity address

Reports the address to the metaserver. Then, the metaserver will use this address to redirect the users.

-L module, --LoadAI module

Loads AI module. This option can appear multiple times to load different modules.

-l filename, --log filename

Defines a log file, filename, to be produced during processing. Use the -d option to set how much is logged. By default, fatal, error, and normal messages are printed to standard output. With a log file, such messages go to the log instead.

-M address, --Metaserver address

Specifies the address of the metaserver to send your server's information to. By default, the standard metaserver run by the Freeciv maintainers will be used.

-m, --meta

Directs the server to communicate with a metaserver, a place where Freeciv servers can publish their presence. Freeciv clients consult the metaserver to offer users a selection of games to join. By default the standard Freeciv metaserver is used. You may specify an alternate metaserver with the -M option.

-N, --Newusers

Allow new users to login and be registered in the players base if authentication is enabled.

-p port, --port port

Specifies the TCP port number to which clients will connect; players must know this number to be able to connect if they are not to use the default of 5556 decimal. You may need to use this if 5556 is not available for your use on your system, or if you would like to run multiple servers on the same system.

-q time, --quitidle time

Quits if no players are present for the specified time, in seconds, and restarts a new server.

-R filename, --Ranklog filename

Defines a log file, filename, to be produced during processing. This log contains information for player ranking.

-r filename, --read filename

Specifies a file, filename, of server commands which the server will automatically read and process, as if you had typed them in at the server's prompt. The distribution comes with a few examples, including files that set options to be similar to Civilization I® and Civilization II® . The files are named civ1.serv and civ2.serv, and are typically found at /usr/local/share/freeciv/.

-S id, --Serverid id

Sets the server id. This is used to identify a particular running game.

-s directory, --saves directory

Specifies the directory to place save game files created by the server. This is especially useful when you're running more than one server on the same system, as it inhibits your servers from clobbering other's save game files.

(This does not influence where the server looks when loading save game files; see FREECIV_SAVE_PATH for that.)

--scenarios directory

Specifies the directory to place scenarios saved by the server (for instance, those created with the in-game editor).

(This does not influence where the server looks when loading scenario files; see FREECIV_SCENARIO_PATH for that.)

-v, --version

Causes the server to display its version number and exit.

EXAMPLES

freeciv-server --file oldgame.sav --port 2244: Starts a server on port 2244, loading the save game file oldgame.sav.
freeciv-server -R ranklog -l logfile -r script -f oldgame.sav.gz -p 2244: Starts a server on port 2244, loading the save game file oldgame.sav.gz. Ranking related events are written to ranklog, other logging information is written to logfile. When the server starts, it immediately executes the commands contained in script.
freeciv-server -m -a -D fc_auth.conf -q 60 -p 2244 -d 2 -l logfile -r script -s ~/saves: Starts a server on port 2244 with authentication enabled and communicates its existence to the standard Freeciv metaserver. Fatal, error, and normal messages are written to logfile. When the server starts it immediately executes the commands contained in script. Save game files are stored in the ~/saves directory. When there are no users on the server for 60 seconds, the server will restart.

COMMANDS

You may enter commands into the server at any time, either before or during the running of a game.

Type "help" or "help help" for starters.

FILES

The Freeciv server requires the following files in the Freeciv data directory, which is /usr/local/share/freeciv by default:

• default/buildings.ruleset

• default/cities.ruleset

• default/effects.ruleset

• default/game.ruleset

• default/governments.ruleset

• default/nations.ruleset

• default/techs.ruleset

• default/terrain.ruleset

• default/units.ruleset

• default/default.lua

• default/script.lua

These are the default rule sets used for the game. Alternate sets of rules can be used by placing them in a separate directory and using the rulesetdir command to change your server's ruleset directory.

Type help rulesetdir for more information.

ENVIRONMENT

The Freeciv server accepts these environment variables:

FREECIV_CAPS: A string containing a list of "capabilities" provided by the server. The compiled-in default should be correct for most purposes, but if you are familiar with the capability facility in the source you may use it to enforce some constraints between clients and server.
FREECIV_COMPRESSION_LEVEL: Sets the compression level for network traffic.
FREECIV_DATA_ENCODING: Sets the character encoding used for data files, savegames, and network strings). This should not normally be changed from the default of UTF-8, since that is the format of the supplied rulesets and the standard network protocol.
FREECIV_INTERNAL_ENCODING: Sets the character encoding used internally by freeciv-server; this encoding should not be visible at any interface. Defaults to UTF-8.
FREECIV_LOCAL_ENCODING: Sets the local character encoding (used for the command line and terminal output). The default is inferred from other aspects of the environment.
FREECIV_MULTICAST_GROUP: Sets the multicast group (for the LAN tab).
FREECIV_DATA_PATH: A colon separated list of directories pointing to the freeciv data directories. By default Freeciv looks in the following directories, in order, for any data files: the current directory; the "data" subdirectory of the current directory; the subdirectory ".freeciv/2.5" in the user's home directory; and the directory where the files are placed by running "make install". If not set, FREECIV_PATH is checked before these defaults are used.
FREECIV_SAVE_PATH: A colon separated list of directories pointing to the freeciv save directories. By default Freeciv looks in the following directories, in order, for save files: the current directory; and the subdirectory ".freeciv/saves" in the user's home directory. If not set, FREECIV_PATH is checked before these defaults are used; in this case Freeciv also looks in "saves" potential subdirectories.
(This does not affect where the server creates save game files; see the --saves option for that.)
FREECIV_SCENARIO_PATH: A colon separated list of directories pointing to the freeciv scenario directories. By default Freeciv looks in the following directories, in order, for scenario files: the current directory; the "data/scenarios" subdirectory of the current directory; the subdirectories ".freeciv/2.5/scenarios" and then ".freeciv/scenarios" in the user's home directory; and the directory where the files are placed by running "make install". If not set, FREECIV_PATH is checked before these defaults are used; in this case Freeciv also looks in "scenario" and "scenarios" potential subdirectories.
(This does not affect where the server creates scenario files; see the --scenarios option for that.)
FREECIV_PATH: A colon separated list of directories to look for various files. This variable has no effect if FREECIV_DATA_PATH, FREECIV_SAVE_PATH and FREECIV_SCENARIO_PATH are defined together; those variables are the recommended way to override paths, with FREECIV_PATH provided for backward compatibility with older versions of Freeciv. The precise search path depends on the type of file being searched for.
HOME: Specifies the user's home directory.
http_proxy: Set this variable accordingly when using a proxy.
LANG or LANGUAGE: Sets the language and locale on some platforms.
LC_ALL or LC_CTYPE: Similar to LANG (see documentation for your system).
USER: Specifies the username of the current user.

BUGS

Please report bugs to the Freeciv bug tracker .

MORE INFO

See the Freeciv homepage .

Updates and new info is first posted there.

AUTHORS

The Freeciv Team <freeciv-dev AT gna.org>.

This manpage was originally put together by Florian Ernst <florian_ernst AT gmx.net> using the Server Manual and the comments in the sourcecode. It was updated by Ben Bettin <bwbettin AT gmail.com> to add new features, integrate information from the website's online documentation, and for slight formatting adjustments. Feel free to use it as you wish.