ServerConfiguration

Summary

The server configuration file is named server.xml, and is located in the same folder as the file named Server.exe on Windows or Server on Linux.
You can use a custom server configuration file with the -config option. Example: Server.exe -config my-config.xml. See the server command arguments page for more info on accepted command arguments. The file uses the XML syntax, with a root node named server.
Official XML Specification

Settings

Server Property Name	Default Value	Description
compresspackets	false	The status of whether packets are compressed. This is only available in GTAC versions 1.0.66 and newer.
duplicatenames	false	The status of whether to allow players with duplicate names.
game	gta:iii (required)	The identifier of the game that the server should run for. See game identifiers for more information.
gamemode	n/a (required)	The name of the game mode, which appears in the server browser.
httpport	22000	The port for the server to transfer HTTP data on, between 0 and 65,535.
httpserver	true	Whether or not to run the HTTP server. If you don't run it, you'll need to host the HTTP server elsewhere, with the port found in httpport.
logpath	"" (empty string)	The path to store the server logs. Leave blank to not use server logs.
logtimestamp	"" (empty string)	The timestamp format to use in the log files. Based on the strftime format from C++. Some examples: [%H:%M:%S] This displays only the time [%d/%m/%Y %H:%M:%S] This would display the date in dd/mm/yyyy format followed by the time in hour:minute:second format.
maxplayers	32	The maximum amount of players that can connect to the server, between 0 and 256.
minclientversion	1.0.0	The minimum version that clients can connect with.
modules	(empty node)	The modules to load. Use the <module> tag inside the <modules> tag, for each module to load, including the src attribute for the directory path.
packetcompressionlevel	default	The compression level for compressed packets, between 0 and 9, or the word default. Default is 6 (ZLib's Z_DEFAULT_COMPRESSION)
password	"" (empty string)	The password to connect to the server.
pickupstreamindistance	50.0	The distance that a pickup is sent to the client, recommended to be about 50.0.
pickupstreamoutdistance	100.0	The distance that a pickup is removed from the client, recommended to be about 100.0.
port	22000	The port for the server to listen on, between 0 and 65,535. Players only need to know the port if using the /connect command in-game, not when using the server browser.
processinterval	50	The interval, in milliseconds, of each process-once occurrence, between 0 and 65,535.
rcon	false	The status of whether the server will host the remote console service, use true or false.
rconpassword	"" (empty string)	The password to connect to the remote console service.
resources	(empty node)	The resources to load. Use the <resource> tag inside the <resources> tag, for each resource to load, including the src attribute for the directory path.
serverbrowser	false	The status of whether to show the server in the server browser, use true or false.
servername	n/a (required)	The name of the server, which appears in the server browser.
streamindistance	100.0	The distance that an entity is sent to the client, recommended to be about 100.0.
streamoutdistance	200.0	The distance that an entity is removed from the client, recommended to be about 200.0.
syncinterval	30	The interval, in milliseconds, of each sync occurrence for the regularly sync'd data, between 0 and 65,535.
syncmethod	interval	The sync type for regularly sync'd data. Use none, interval, replay, or peer2peer. (See sync methods section below)
cvar	null	Sets a server's cvar value (See cvars section for accepted cvars)
ipv4	true	Enables/disables support for ipv4
ipv6	true	Enables/disables support for ipv6
bindip	true	Forces the server to use a specific IP. Only for hosts that have multiple IP addresses.
iv_gamemode	30	Sets the built-in gamemode for IV. See IV Gamemodes for more information.
iv_episode	0	Sets the DLC to use for IV. See IV Episodes for more information

CVars

CVars are values that affect specific game features. For example, the "Traffic" cvar will toggle the server traffic on/off, depending on the value provided. See the "Settings" section above to see how to add a cvar to a server configuration. Below is a list of built in cvars and values for each. You can also add custom cvars and access them with server.getCVar. CVars added to server config are not case sensitive.

CVar Name	Type	Description
Nametags	boolean	Enable/disable built-in nametags
GunShops	boolean	Enable/disable singleplayer gunshops (ammunations)
UniqueStuntJumps	boolean	Enable/disable the slow-motion unique jumps from singleplayer (example, the Callahan Bridge median)
StuntJumps	boolean	Enable/disable the bonuses provided by doing stunts (and what a great landing!)
StauntonToiletCamera	boolean	Force the multi-stage fixed camera used when entering the toilet in Belleville Park
Gates	boolean	Enable/disable the automatic singleplayer gates (example: the one at LCPD when you show up in a police car)
Trains	boolean	Enable/disable trains. This does not have any effect on GTA Vice City
Planes	boolean	Enable/disable the overhead ambience planes. The position and status of these are synced as well.
MaximumWantedLevel	integer	Set's the highest possible wanted level. Use 0 to disable automatic wanted levels altogether.
DefaultParkedCars	boolean	If enabled, spawns default parked vehicles found in singleplayer
Ambulances	boolean	Enables/disable the singleplayer rescue ambulances and paramedics when somebody is killed
Traffic	boolean	Enables/disable AI traffic. With peer2peer enabled, this will be synced with everyone.
Civilians	boolean	Enables/disable AI peds that walk around the city. With peer2peer enabled, this will be synced with everyone.
DefaultPickups	boolean	Enables/disable the default pickups found in singleplayer
SinglePlayer	boolean	Enables/disable general singleplayer features

Sync Methods

There are a few different config options for server sync. Here is the list of them and a brief description of each.

Name	Description
none	Disables element sync entirely. Not recommended for multiplayer environments.
replay	Default. This will sync elements as soon as they're processed. If CPU usage is too busy and processing is slow, sync will be too.
interval	This forces sync of elements at a specified interval. Use <syncinterval> in server config to set the interval time in milliseconds (ms)
peer2peer	Syncs elements from client to client directly. Server receives sync every few seconds to keep up to date.

Sync Priority

There are a few different config options for sync packet priority. Here is the list of them and a brief description of each.

Name	Description
immediate	Sends sync immediately without delay
high	Sends sync twice as much as medium (if both levels are waiting to be sent)
medium	Sends sync twice as much as low (if both levels are waiting to be sent)
low	Sends sync with the lowest priority