Page Comparison

Message Format

Data Type	Description
Short (2 Bytes)	Message Type
Int (4 Bytes)	Size of Data
Byte Array	Data

All messages are sent in this format. The Data depends on the Message Type. See Below.

String Format

Data Type	Description
Int (4 Bytes)	Length of String
Byte Array	String encoded in UTF-8

This format is used for the String data types below.

Message Types

SERVER_CONNECT = 0
SERVER_CONNECT_SUCCESS = 1
PASSWORD = 2
PLAYER_CHAT = 3
PLAYER_CONNECT = 4
PLAYER_DISCONNECT = 5
SAY_ALL = 6
SAY_ALL_BIG = 7
SAY = 8
MAP_CHANGED = 9
MAP_LIST = 10
CHANGE_MAP = 11
ROTATE_MAP = 12
TEAM_CHANGED = 13
NAME_CHANGED = 14
KILL = 15
SUICIDE = 16
KICK_PLAYER = 17
TEMP_BAN_PLAYER = 18
BAN_PLAYER = 19
UNBAN_PLAYER = 20
ROUND_END = 21
PING = 22

Game Events (from server)

SERVER_CONNECT

Data Type	Description
String	Challenge String

Sent when a connection attempt is received. Use the challenge string and send a PASSWORD message.

SERVER_CONNECT_SUCCESS

No Data

Sent after the password has been accepted.

PLAYER_CHAT

Data Type	Description
Long (8 Bytes)	Steam ID
String	Message
Int (4 bytes)	Team ID

Sent when a player types a message in the in-game chat.

PLAYER_CONNECT

Data Type	Description
Long (8 Bytes)	Steam ID
String	Player Name

Sent when a player joins the game.

PLAYER_DISCONNECT

Data Type	Description
Long (8 Bytes)	Steam ID

Sent which a player leaves the game.

MAP_CHANGED

Data Type	Description
Int (4 bytes)	Index in Map Rotation.
String	Map Name

Sent when a new map has started.

ROUND_END

Data Type	Description
Int (4 bytes)	Winning Team ID.

Sent when a round is over.

MAP_LIST

Data Type	Description
String	Map Name

The map list is sent one time after SERVER_CONNECT_SUCCESS. Each map name is sent as an individual message.

TEAM_CHANGED

Data Type	Description
Long (8 Bytes)	Steam ID
Int (4 bytes)	Team ID

Sent when a player joins a team.

NAME_CHANGED

Data Type	Description
Long (8 Bytes)	Steam ID
String	Player Name

Sent when a player's name changes.

KILL

Data Type	Description
Long (8 Bytes)	Killer Steam ID
Long (8 Bytes)	Victim Steam ID

Sent when a player kills another player.

SUICIDE

Data Type	Description
Long (8 Bytes)	Steam ID

Sent when a player commits suicide.

PING

Data Type	Description
Long (8 Bytes)	Steam ID
Int (4 bytes)	Ping

Each player's ping is sent periodically.

RCon Commands (to server)

PASSWORD

Data Type

Description

String

Password concatenated with the challenge string (from SERVER_CONNECT).

Encoded using SHA-1 and sent as a 40 character hex string.

Send after receiving SERVER_CONNECT message.

SAY_ALL

Data Type	Description
String	Message

Broadcast a message to all players.

SAY_ALL_BIG

Data Type	Description
String	Message

Broadcast a message to all players in a way that will catch their attention.

SAY

Data Type	Description
Long (8 Bytes)	Steam ID
String	Message

Display a message to a given player.

CHANGE_MAP

Data Type	Description
String	Map Name

Load the given map.

ROTATE_MAP