RCon Protocol
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
No Data
Load the next map in the rotation.
KICK_PLAYER
| Data Type | Description |
|---|---|
| Long (8 Bytes) | Steam ID |
| String | Reason |
Kick the given player.
TEMP_BAN_PLAYER
| Data Type | Description |
|---|---|
| Long (8 Bytes) | Steam ID |
| String | Reason |
| Int (4 Bytes) | Duration in Seconds |
Temporarily ban the given player on the game server.
BAN_PLAYER
| Data Type | Description |
|---|---|
| Long (8 Bytes) | Steam ID |
| String | Reason |
Ban the given player on the game server.
UNBAN_PLAYER
| Data Type | Description |
|---|---|
| Long (8 Bytes) | Steam ID |
Unban the given player on the game server.