DAoC protocol opcodes
Every opcode the 1.130 game client and the OpenDAoC server know, by feature family, with OpenDAoC's name, what it does, its sub-types, and whether OpenDAoC implements it.
- opcodes
- 228
- opcodes
- client → server
- 92
- client → server
- server → client
- 136
- server → client
- missing in OpenDAoC
- 34
- missing in OpenDAoC
Client → server 92 opcodes
0123456789ABCDEF 0
00
01
02
03
04
05
06
07
08
09
0A
0B
0C
0D
0E
0F
1
10
11
12
13
14U
15
16
17
18
19
1A
1B
1C
1D
1E
1F
2
20
21
22
23
24
25
26
27
28
29
2A
2B
2C
2D
2E
2F
3
30
31
32
33
34
35
36
37
38
39
3A
3B
3C
3D
3E
3F
4
40
41
42
43
44
45
46
47
48
49
4A
4B
4C
4D
4E
4F
5
50
51
52
53
54
55
56
57
58
59
5A
5B
5C
5D
5E
5F
6
60
61
62
63
64
65
66
67
68
69
6A
6B
6C
6D
6E
6F
7
70
71
72
73
74
75
76
77
78
79
7A
7B
7C
7D
7E
7F
8
80
81
82
83
84
85
86
87
88
89
8A
8B
8C
8D
8E
8F
9
90
91
92
93
94
95
96
97
98
99
9A
9B
9C
9D
9E
9F
A
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
AA
AB
AC
AD
AE
AF
B
B0
B1
B2
B3
B4
B5
B6
B7
B8
B9
BA
BB
BC
BD
BE
BF
C
C0
C1
C2
C3
C4
C5
C6
C7
C8
C9
CA
CB
CC
CD
CE
CF
D
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
DA
DB
DC
DD
DE
DF
E
E0
E1
E2
E3
E4
E5
E6
E7
E8
E9
EA
EB
EC
ED
EE
EF
F
F0
F1
F2U
F3
F4
F5
F6
F7
F8
F9
FA
FB
FC
FD
FE
FF
Server → client 136 opcodes
0123456789ABCDEF 0
00
01
02
03
04
05
06
07
08
09
0A
0B
0C
0D
0E
0F
1
10
11
12
13
14
15
16
17
18
19
1A
1B
1C
1D
1E
1F
2
20
21
22
23
24
25
26
27
28
29
2A
2B
2C
2D
2E
2FU
3
30
31
32
33
34
35
36
37
38
39
3A
3B
3C
3D
3E
3F
4
40
41
42
43
44
45
46
47
48
49
4A
4B
4C
4D
4E
4F
5
50
51
52
53
54
55
56
57
58
59
5A
5B
5C
5D
5E
5F
6
60
61
62
63
64
65
66
67
68
69
6A
6B
6C
6D
6E
6F
7
70
71
72
73
74
75
76
77
78
79
7A
7B
7C
7D
7E
7F
8
80
81
82
83
84
85
86
87
88
89
8A
8B
8C
8D
8E
8F
9
90
91
92
93
94
95
96
97
98
99
9A
9B
9C
9D
9E
9F
A
A0
A1U
A2
A3
A4
A5
A6
A7
A8
A9U
AA
AB
AC
AD
AE
AF
B
B0
B1
B2
B3
B4
B5
B6
B7
B8
B9
BAU
BB
BC
BD
BE
BF
C
C0
C1
C2
C3
C4
C5
C6
C7
C8
C9
CA
CB
CC
CD
CE
CF
D
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
DA
DB
DC
DD
DE
DF
E
E0
E1
E2
E3
E4
E5
E6
E7
E8
E9
EA
EB
EC
ED
EE
EF
F
F0
F1
F2
F3
F4
F5
F6
F7
F8
F9
FA
FB
FC
FD
FE
FF
Direction
Show
Family
Session & login
17 opcodes · 3 missing in OpenDAoCNo opcodes in this family match the filters.
0x14
C→S
UDPInitRequest
UDP
Client local UDP address; server replies UDP init
handled
0x21
S→C
DebugMode
retail
Toggle client debug mode
sent
0x22
S→C
CryptKey
retail
Server version and encryption handshake
sent
0x28
S→C
SessionID
retail
Assign client session ID
sent
0x29
S→C
PingReply
retail
Reply to client ping with timestamp
sent
0x2A
S→C
LoginGranted
retail
Login accepted: account, server name, ruleset
sent
0x2C
S→C
LoginDenied
Login refused with error reason
23 sub-types
sent
| Value | Sub-type | Note |
|---|---|---|
| 0x01 | IncorrectPassword | |
| 0x02 | InvalidAccount | |
| 0x03 | AuthorizationServerUnavailable | |
| 0x05 | IncorrectClientVersion | |
| 0x06 | Error | |
| 0x07 | AccountNotFound | |
| 0x08 | AccountNoAccessAnyGame | |
| 0x09 | AccountNoAccessThisGame | |
| 0x0A | ClosedAccount | |
| 0x0B | AccountAlreadyLoggedIn | |
| 0x0C | TooManyPlayersLoggedIn | |
| 0x0D | GameCurrentlyClosed | |
| 0x10 | AccountAlreadyLoggedInToOtherServer | |
| 0x11 | AccountIsInLogoutProcedure | |
| 0x12 | TooManyFreeAccountsLoggedIn | |
| 0x13 | AccountNeedsInvite | |
| 0x14 | BannedAccount | |
| 0x15 | Unknown | |
| 0x19 | RequestedServerNotFound | |
| 0xAA | ServiceNotAvailable |
20 of 23 listed.
0x2F
S→C
UDPInitReply
UDP
UDP channel initialised (UDP)
sent
0x37
C→S
ClientCrash
Client crash report; server disconnects
handled
0xA3
C→S
PingRequest
retail
TCP ping; server echoes timestamp
handled
0xA4
S→C
Quit
retail
Logout: quit game or back to character select
2 sub-types
sent
| Value | Sub-type | Note |
|---|---|---|
| 0 | to character select | totalOut=false |
| 1 | total quit | totalOut=true |
0xA7
C→S
LoginRequest
retail
Account login with version, username, password
handled
0xAC
C→S
Leave-world notice confirmed live
retail
Sent on /quit to character select and on exit; 1 byte, always 0
no handler
0xB8
C→S
Quit notice with reason confirmed live
Sent only on game exit; 01 clean exit, 00 after a crash
no handler
0xB8
S→C
Realm lockout notice likely
Handler prints "cannot log into this realm for another N minutes"
never sent
0xF2
C→S
UDPPingRequest
UDP
UDP keepalive; confirms UDP path
handled
0xF4
C→S
CryptKeyRequest
retail
Client type and version handshake
handled
Character select & create
16 opcodes · 2 missing in OpenDAoCNo opcodes in this family match the filters.
0x10
C→S
CharacterSelectRequest
retail
Character chosen; server grants login and session ID
handled
Payload ignored.
0x52
C→S
Character-select request with name guess
Built in character-select code; u16 + 24-char name. Not delete
no handler
0x52
S→C
Character-select reply guess
Handled before entering the world; pairs with C->S 0x52
never sent
0xC0
C→S
CharacterDeleteRequest
Delete character by name
client never sends
0xC2
C→S
Unknown
Check character name against invalid-name list
client never sends
0xC3
S→C
BadNameCheckReply
Character name allowed/forbidden reply
client ignores
0xCB
C→S
DuplicateNameCheck
Check if character name is taken or invalid
handled
0xCC
S→C
DupNameCheckReply
Character name duplicate check result
sent
0xD4
S→C
PlayerCreate
older clients only
0xD5
C→S
CreatePlayerRequest
Request creation packet for another player
handled
0xF0
S→C
CharacterCreateReply
Confirm character created
client ignores
0xFC
C→S
CharacterOverviewRequest
retail
Choose realm / request character list
4 sub-types
handled
| Value | Sub-type | Note |
|---|---|---|
| 0 | realm query | SendRealm |
| 1 | Albion | SendCharacterOverview |
| 2 | Midgard | |
| 3 | Hibernia |
0xFC
S→C
CharacterOverview1126
retail
Character select list for a realm
sent
0xFD
S→C
CharacterOverview
older clients only
0xFE
S→C
Realm
retail
Selected realm for character screen
sent
0xFF
C→S
CharacterCreateRequest
Create, customize or delete a character
3 sub-types
handled
Pre-1.125 clients used 32-bit operation codes.
| Value | Sub-type | Note |
|---|---|---|
| 1 | create | |
| 2 | customize | CustomizeType byte follows: 1 face, 2 attributes, 3 both |
| 3 | delete | only when name empty |
World entry & regions
22 opcodes · 7 missing in OpenDAoCNo opcodes in this family match the filters.
0x1D
C→S
World-entry notice likely
retail
Sent 3x (zeros) on every world entry; retail sends no specific reply
no handler
0x20
S→C
PositionAndObjectID
retail
Own position, object ID and region on zone-in
sent
0x24
S→C
World-entry flag guess
retail
Retail sends 4 zero bytes in the world-entry burst
never sent
0x2B
S→C
CharacterInitFinished
retail
Character world initialisation complete
sent
0x2D
S→C
GameOpenReply
retail
Acknowledge game open request
sent
0x42
C→S
Area-list notice likely
retail
Sent with 0x43 from the zone/area-list code on world entry
no handler
0x43
C→S
Refresh request likely
retail
Sent on world entry, after dialog responses and with warmap requests
no handler
0x50
S→C
World-entry value guess
retail
Retail sends 4 bytes (00000bdc) just before GameOpenReply
never sent
0x5C
S→C
XFire
XFire integration flag
client ignores
0x5F
S→C
World-entry notice guess
retail
Retail sends it 3x (1 byte, 00) on world entry
never sent
0x7E
S→C
Time
retail
Game time and day increment
sent
0x90
C→S
PlayerRegionChangeRequest
Use zone point / jump to another region
handled
0x92
S→C
Weather
retail
Region weather/storm parameters
sent
0x9D
C→S
RegionListRequest
retail
Request region list for character-select slot
handled
0x9E
S→C
ClientRegions
Region list with server IP and ports
client ignores
0xA6
S→C
Zone-entry info (new in 1.130) likely
retail
Only opcode new in 1.130; retail sends 72 00 00 after "You have entered"
never sent
0xB1
S→C
ClientRegion
retail
Region server IP and port (1.126+)
sent
0xB7
S→C
RegionChanged
Client region/zone changed
sent
0xBF
C→S
GameOpenRequest
retail
Enter play state; UDP confirmation flag
handled
0xD4
C→S
WorldInitRequest
retail
Load selected character and enter world
handled
0xE8
C→S
PlayerInitRequest
retail
Region-enter init; server sends world state
handled
0xEF
S→C
RegionSound
Level-up or region-enter sound
2 sub-types
sent
| Value | Sub-type | Note |
|---|---|---|
| 1 | level up sound | + realm byte |
| 2 | region enter sound | + sound ID |
Movement & position
12 opcodesNo opcodes in this family match the filters.
0x04
S→C
CharacterJump
Teleport/jump player to position and heading
sent
0x4E
S→C
ControlledHorse
retail
Player horse appearance (self when OID 0)
sent
0xA9
C→S
PositionUpdate
retail
Player position, speed, zone, heading and state
handled
State and action fields are bit flags, not sub-types.
0xA9
S→C
PlayerPosition
UDP
Broadcast another player's position, speed, state
sent
0xB6
S→C
MaxSpeed
retail
Max speed percent, turning lock, water speed
sent
0xBA
C→S
PlayerHeadingUpdate
retail
Heading and state flags update (short state)
handled
0xBA
S→C
PlayerHeading
UDP
Broadcast another player's heading and state
sent
0xC7
C→S
PlayerSitRequest
Sit down or stand up
handled
0xC8
C→S
PlayerDismountRequest
Dismount from steed
handled
0xC8
S→C
Riding
Mount or dismount rider on steed
2 sub-types
sent
| Value | Sub-type | Note |
|---|---|---|
| 1 | mount | with seat slot |
| 0 | dismount |
0xD0
C→S
CheckLosRequest
Client reply to a server line-of-sight check
handled
0xD0
S→C
CheckLOSRequest
Ask client to check line of sight
sent
Objects, NPCs & targeting
21 opcodes · 1 missing in OpenDAoCNo opcodes in this family match the filters.
0x12
S→C
MovingObjectCreate
Create boat/siege moving object
sent
0x4B
S→C
PlayerCreate172
Create another player in view
sent
0x7A
C→S
ObjectInteractRequest
Interact with (right-click) a world object
handled
No sub-type: the server passes it to the target object.
0x99
C→S
DoorRequest
Open or close a door
2 sub-types
handled
The door ID says which kind: keep door or house door.
| Value | Sub-type | Note |
|---|---|---|
| 0x01 | open | |
| other | close |
0x99
S→C
DoorState
Door open/closed state and sound flag
sent
0xA1
S→C
ObjectUpdate
UDPretail
NPC/object position, speed, target and health
sent
0xA2
S→C
RemoveObject
Remove object from client view
sent
0xA5
C→S
ObjectUpdateRequest
Request object refresh (ignored by server)
client never sends
0xAC
S→C
Object removal guess
Handler removes an object ID from a client-side table
never sent
0xB0
C→S
PlayerTarget
Change current target (with LOS/examine flags)
handled
0xB5
C→S
PickUpRequest
Pick up targeted ground object
handled
0xBE
C→S
CreateObjectRequest
retail
Request creation packet for an object ID
handled
0xD9
S→C
ObjectCreate
retail
Create static object/door in world
sent
0xDA
S→C
NPCCreate
retail
Create NPC with model, level, flags, name
sent
0xDB
S→C
ModelChange
Change object model and size
sent
0xDE
S→C
ObjectGuildID
retail
Set object's guild ID
sent
0xE1
S→C
ObjectDelete
Delete object from client
sent
0xEC
C→S
PlayerGroundTarget
Set ground target position
handled
0xEC
S→C
ChangeGroundTarget
Set ground target (GroundAssist)
sent
0xEE
S→C
ObjectDataUpdate
Update living level, guild and name
sent
0xF6
S→C
ChangeTarget
Force client target change
sent
Combat, death & pets
9 opcodesNo opcodes in this family match the filters.
0x74
C→S
PlayerAttackRequest
Toggle melee attack mode on or off
handled
0x74
S→C
AttackMode
Toggle player melee attack mode
sent
0x88
S→C
PetWindow
Open/update/close pet window with stance and buffs
3 sub-types
sent
| Value | Sub-type | Note |
|---|---|---|
| 2 | Open | ePetWindowAction.Open: create window |
| 1 | Update | ePetWindowAction.Update |
| 0 | Close | ePetWindowAction.Close / released |
0x89
S→C
PlayerRevive
Player was resurrected
sent
0x8A
C→S
PetWindow
Pet window button: stance, movement or command
9 sub-types
handled
| Value | Sub-type | Note |
|---|---|---|
| b0=1 | aggro Aggressive | |
| b0=2 | aggro Defensive | |
| b0=3 | aggro Passive | |
| b1=1 | walk Follow | |
| b1=2 | walk Stay | |
| b1=3 | walk GoTarget | |
| b1=4 | walk ComeHere | |
| b2=1 | command Attack | |
| b2=2 | command Release |
0x8D
S→C
PlayerModelTypeChange
retail
Change player model type (e.g. form)
sent
0xAD
S→C
CharacterStatusUpdate
retail
Own health/mana/endurance/concentration values
sent
0xAE
S→C
PlayerDeath
Player killed, with killer object
sent
0xBC
S→C
CombatAnimation
Melee attack animation and result
sent
Spells, skills & effects
15 opcodesNo opcodes in this family match the filters.
0x1B
S→C
SpellEffectAnimation
Spell hit/bolt visual effect on target
sent
0x4C
S→C
VisualEffect
retail
Multiplexed per-object visual/UI effects
10 sub-types
sent
| Value | Sub-type | Note |
|---|---|---|
| 0x03 | hex / warlock chamber | 5 effect bytes; used by SendHexEffect and SendWarlockChamberEffect |
| 0x04 | vampiir flight | 0 enable, 1 disable |
| 0x05 | region colour scheme | |
| 0x07 | NPC quest indicator | eQuestIndicator: None/Available/Finish/Lesson/Lore/Pending |
| 0x08 | blink UI panel | |
| 0x09 | free level state | |
| 0x0B | player title | |
| 0x0C | RvR guild banner | |
| 0x0D | minotaur relic window | |
| 0x0E | minotaur relic bar XP |
0x72
S→C
SpellCastAnimation
Start spell casting animation
sent
0x73
S→C
InterruptSpellCast
Interrupt casting animation
sent
0x75
S→C
ConcentrationList
retail
Concentration buffs list
sent
0x76
C→S
RemoveConcentrationEffect
Cancel a concentration spell by index
handled
0x7D
C→S
UseSpell
Cast spell, style or ability from a spell line
handled
The server decides whether the index is a spell, style or ability.
0x7F
S→C
UpdateIcons
Player active effect icons
sent
0xBB
C→S
UseSkill
Use ability, style, spell or spec from skill list
2 sub-types
handled
| Value | Sub-type | Note |
|---|---|---|
| 0 | full list index | index into all usable skills incl. specializations |
| >0 | non-spec index | index offset past specializations |
0xC4
S→C
DetailWindow
Text detail window (stats/titles or custom text)
2 sub-types
sent
| Value | Sub-type | Note |
|---|---|---|
| 1 | player statistics + titles | SendPlayerTitles: stats lines, 200 marker, then titles list |
| 0 | custom text window | SendCustomTextWindow: caption + text lines |
0xCA
C→S
BonusesListRequest
Request item/stat bonuses text window
handled
0xD6
S→C
DisableSkills
retail
Skill/spell cooldown (disabled) timers
2 sub-types
sent
| Value | Sub-type | Note |
|---|---|---|
| 1 | hybrid skill | entries: skill index + duration |
| 2 | list spells | entries: line index + spell index; shared duration |
0xD8
C→S
DetailRequest
Delve/info request for item, spell, style, etc.
28 sub-types
handled
More values: 3 hybrid spells, 15 chat group, 20-23 trainer styles, songs, spells and abilities, 101 self-craft, 102 salvage; anything else is champion lines.
| Value | Sub-type | Note |
|---|---|---|
| 1 | inventory item | |
| 2 | spell list | |
| 4 | merchant item | |
| 5 | buff/effect icon | |
| 6 | style | |
| 7 | trade window item | |
| 8 | ability | |
| 9 | trainer window info | |
| 10 | market search item | |
| 12 | item info to guild chat | |
| 14 | item info to group chat | |
| 17 | item info to battlegroup | |
| 19 | quest reward item | |
| 24 | SpellsNew tooltip | |
| 25 | StylesNew tooltip | |
| 26 | SongsNew tooltip | |
| 27 | RANew tooltip | |
| 28 | AbilityNew tooltip | |
| 29 | quest window item (1.115+) | |
| 100 | repair |
20 of 28 listed.
0xD8
S→C
DelveInfo
Delve (item/spell info) text
sent
0xF8
C→S
PlayerCancelsEffect
Cancel own effect by tooltip ID
handled
Character progression
9 opcodesNo opcodes in this family match the filters.
0x13
S→C
MasterLevelWindow
Master level progress bars and step descriptions
sent
Byte 8 is the requested master level (0 = current).
0x16
S→C
VariousUpdate
retail
Multiplexed character sheet updates (skills, stats, group, crafting)
6 sub-types
sent
| Value | Sub-type | Note |
|---|---|---|
| 0x01 | skills | usable skills/specs/abilities/styles list; subtype 0x03, 99 = more pages |
| 0x02 | spell lines | non-hybrid spell lines; subtype 0x02 per line, 99 footer |
| 0x03 | player info | name, class, realm rank, guild, titles |
| 0x05 | weapon/armor stats | weapon damage, weapon skill, effective AF |
| 0x06 | group window | group member names, classes, levels |
| 0x08 | crafting skills | crafting skill points list |
0x53
C→S
TrainHandler
Train specializations and realm abilities from trainer window
handled
0x7B
C→S
TrainWindowHandler
Request trainer window
handled
0x7B
S→C
TrainerWindow
Trainer window: specs, realm abilities, champion lines
6 sub-types
sent
| Value | Sub-type | Note |
|---|---|---|
| 0 | specs | trainable spec levels |
| 1 | realm abilities | RA list with costs |
| 2 | champion | champion line tree |
| 3 | skill descriptions | per-spec skill entries |
| 4 | name index | skill names |
| 5 | realm ability details | RA levels and per-level costs |
0x7C
C→S
ChampionTrainHandler
Train a champion-level ability
handled
0x91
S→C
CharacterPointsUpdate
retail
Realm/bounty/skill points and XP progress
sent
0xBD
S→C
Encumberance
retail
Carrying capacity and inventory weight
sent
0xFB
S→C
StatsUpdate
retail
Character stats or resists breakdown
2 sub-types
sent
| Value | Sub-type | Note |
|---|---|---|
| 0x00 | stats | SendCharStatsUpdate: base/buff/item/cap/RA per stat |
| 0xFF | resists | SendCharResistsUpdate |
Inventory & items
7 opcodesNo opcodes in this family match the filters.
0x02
S→C
InventoryUpdate
retail
Inventory slot contents update, optionally opening a window
8 sub-types
sent
| Value | Sub-type | Note |
|---|---|---|
| 0x00 | Update | slot refresh, no window |
| 0x01 | Equipment | |
| 0x02 | Inventory | |
| 0x03 | PlayerVault | |
| 0x04 | HouseVault | byte 3 carries vault number |
| 0x05 | ConsignmentOwner | |
| 0x06 | ConsignmentViewer | |
| 0x07 | HorseBags |
0x15
S→C
EquipmentUpdate
retail
Visible equipment models of a living
sent
0x71
C→S
UseSlot
Use an inventory or quickbar item slot
3 sub-types
handled
| Value | Sub-type | Note |
|---|---|---|
| 0 | Click | simple click on icon |
| 1 | Use1 | /use |
| 2 | Use2 | /use2 |
0x80
C→S
DestroyItemRequest
Destroy an inventory item by slot
handled
0xDD
C→S
PlayerMoveItem
Move/split item between slots, drop or give
4 sub-types
handled
| Value | Sub-type | Note |
|---|---|---|
| >1000 | give to object | object ID = toSlot - 1000 (trade/NPC/give) |
| 100 / 600 | PlayerPaperDoll / NewPlayerPaperDoll | auto-equip into resolved slot |
| 1 | Ground | drop item |
| 601 | GeneralVault | shift-click move with vault open |
0xE0
C→S
PlayerAppraiseItemRequest
Ask merchant or lot marker to appraise item
handled
0xFA
S→C
MoneyUpdate
retail
Player money (copper..mithril)
sent
Trade, merchants & market
10 opcodesNo opcodes in this family match the filters.
0x11
C→S
MarketSearchRequest
Market explorer item search query
handled
0x17
S→C
MerchantWindow
Merchant item list page
14 sub-types
sent
| Value | Sub-type | Note |
|---|---|---|
| 0x00 | Normal | |
| 0x01 | Bp | |
| 0x02 | Count | |
| 0x03 | HousingDeedMenu | |
| 0x04 | HousingOutsideMenu | |
| 0x05 | HousingNPCHookpoint | |
| 0x06 | HousingInsideShop | |
| 0x07 | HousingOutsideShop | |
| 0x08 | HousingVaultHookpoint | |
| 0x09 | HousingCraftingHookpoint | |
| 0x0A | HousingBindstoneHookpoint | |
| 0x0B | HousingInsideMenu | |
| 0x0C | HousingTicket | |
| 0x0D | HousingGuildTicket |
0x1A
C→S
SetMarketPrice
Set consignment merchant price for a slot
handled
0x1C
C→S
WithDrawMerchantMoney
Withdraw money from consignment merchant
handled
0x1E
S→C
ConsignmentMerchantMoney
Consignment merchant stored money
sent
0x1F
S→C
MarketExplorerWindow
Market explorer search results page
sent
Count 255 means an empty result window.
0x78
C→S
BuyRequest
Buy item from merchant or housing menu
8 sub-types
handled
| Value | Sub-type | Note |
|---|---|---|
| 0 | Normal | default: forwarded to targeted merchant/guard merchant/lot marker |
| 3 | HousingDeedMenu | |
| 5 | HousingNPCHookpoint | |
| 6 | HousingInsideShop | |
| 7 | HousingOutsideShop | |
| 8 | HousingVaultHookpoint | |
| 9 | HousingCraftingHookpoint | |
| 10 | HousingBindstoneHookpoint |
0x79
C→S
SellRequest
Sell inventory item to targeted merchant
handled
0xEA
S→C
TradeWindow
Trade window contents; all-zero closes it
sent
0xEB
C→S
ModifyTrade
Update, accept or close trade window
3 sub-types
handled
| Value | Sub-type | Note |
|---|---|---|
| 0 | close | CloseTrade |
| 1 | update | repair/combine flags, 10 item slots, money |
| 2 | accept | AcceptTrade |
Chat, commands & UI
11 opcodes · 1 missing in OpenDAoCNo opcodes in this family match the filters.
0x81
S→C
Dialog
Show dialog box (invite, confirm, quest offer)
15 sub-types
sent
| Value | Sub-type | Note |
|---|---|---|
| 0x00 | SimpleWarning | OK-only warning dialog |
| 0x03 | GuildInvite | guild invite yes/no (SendGuildInviteCommand) |
| 0x05 | GroupInvite | group invite yes/no (SendGroupInviteCommand) |
| 0x06 | CustomDialog | custom server message with callback |
| 0x08 | GuildLeave | confirm leaving guild |
| 0x14 | HousePayRent | house rent payment dialog |
| 0x19 | MasterLevelWindow | master level dialog |
| 0x1A | KeepClaim | confirm keep claim |
| 0x20 | BuyRespec | enum member; no caller in source |
| 0x21 | QuestFinish | quest window, finish/not-yet (SendQuestWindow offer=false) |
| 0x22 | QuestOffer | quest window, accept/decline (SendQuestWindow offer=true) |
| 0x30 | WarmapWindowHibernia | warmap teleport confirm, Hibernia |
| 0x31 | WarmapWindowAlbion | warmap teleport confirm, Albion |
| 0x32 | WarmapWindowMidgard | warmap teleport confirm, Midgard |
| 0x64 | QuestSubscribe | quest accept (data3=0) or abort (data3=1) |
0x82
C→S
DialogResponse
Player answer to a server dialog box
8 sub-types
handled
| Value | Sub-type | Note |
|---|---|---|
| 0x03 | GuildInvite | accept/decline guild invite |
| 0x05 | GroupInvite | accept group invite |
| 0x06 | CustomDialog | invokes stored callback when data2==1 |
| 0x08 | GuildLeave | confirm leaving guild |
| 0x14 | HousePayRent | deposit money/BPs into house lockbox |
| 0x19 | MasterLevelWindow | request ML window page |
| 0x1A | KeepClaim | guild claims nearby keep |
| 0x64 | QuestSubscribe | accept/decline/abort quest offer |
0x98
C→S
Appeal sub-request guess
Built inside the /appeal command code; the appeal dialog doesn't send it
no handler
0xAF
C→S
CommandHandler
retail
Slash command text from the player
handled
182 player slash commands route through this opcode.
0xAF
S→C
Message
retail
Chat or system text message
38 sub-types
sent
38 of the 39 chat types are used; the most common are listed.
| Value | Sub-type | Note |
|---|---|---|
| 0x01 | CT_Say | |
| 0x12 | CT_System | |
| 0x1C | CT_Important | |
| 0x1B | CT_SpellResisted | |
| 0x10 | CT_Spell | |
| 0x04 | CT_Guild | |
| 0x05 | CT_Broadcast | |
| 0xC8 | CT_ScreenCenter | |
| 0x11 | CT_YouHit | |
| 0x08 | CT_Chat | |
| 0x19 | CT_SpellExpires | |
| 0x06 | CT_Emote | |
| 0x0F | CT_Staff | |
| 0x14 | CT_Merchant | |
| 0x13 | CT_Items | |
| 0x0C | CT_BattleGroup | |
| 0x1E | CT_Action | |
| 0x1A | CT_Loot | |
| 0x03 | CT_Group | |
| 0x02 | CT_Send |
20 of 38 listed.
0xC9
S→C
SoundEffect
Play positional sound effect in zone
sent
0xD3
S→C
PlaySound
Play sound by type and ID
2 sub-types
sent
| Value | Sub-type | Note |
|---|---|---|
| 0x01 | Craft | |
| 0x02 | Divers |
0xDC
C→S
ClientFilterSettings
retail
Chat-type and spell-effect filter settings
handled
0xF3
S→C
TimerWindow
Open or close countdown timer window
2 sub-types
sent
| Value | Sub-type | Note |
|---|---|---|
| 1 | open | seconds + title |
| 0 | close | SendCloseTimerWindow |
0xF7
S→C
HelpWindow
Open help topic window
2 sub-types
sent
| Value | Sub-type | Note |
|---|---|---|
| 1 | starter help | SendStarterHelp |
| 106 | rent reminder | SendRentReminder, + house lot |
0xF9
S→C
EmoteAnimation
Play emote animation on object
sent
Quests & tasks
4 opcodes · 1 missing in OpenDAoCNo opcodes in this family match the filters.
0x40
C→S
QuestRewardChosen
Accept quest and chosen reward items
handled
Response byte 1 confirms; anything else is ignored.
0x41
C→S
Task request likely
Its caller prints [Task] messages
no handler
0x4F
C→S
RemoveQuestRequest
Abandon a quest by journal index
handled
0x83
S→C
QuestEntry
retail
Journal quest/task entry at index
sent
Crafting
1 opcodeNo opcodes in this family match the filters.
0xED
C→S
CraftRequest
Craft selected recipe item
handled
Housing
20 opcodesNo opcodes in this family match the filters.
0x00
C→S
HouseMenuRequest
Open a house menu or merchant window
10 sub-types
handled
| Value | Sub-type | Note |
|---|---|---|
| 0 | HousingOutsideShop | |
| 1 | HousingInsideShop | |
| 2 | HousingDeedMenu | |
| 3 | HousingOutsideMenu | |
| 4 | HousingNPCHookpoint | |
| 5 | HousingVaultHookpoint | |
| 6 | HousingCraftingHookpoint | |
| 7 | HousingBindstoneHookpoint | |
| 8 | HousingInsideMenu | flag byte: 0x00 roof, 0xFF floor/wall |
| 9 | HouseInfo | sends house info instead of a window |
0x01
C→S
HouseEdit
Change house exterior appearance (up to 10 changes)
handled
0x03
C→S
HouseUserPermissionRequest
Request house per-player permission list
handled
0x03
S→C
HouseUserPermissions
House per-player/guild permission list
sent
0x05
C→S
HousePermissionRequest
Request house permission levels table
handled
0x05
S→C
HousingPermissions
House permission level table
sent
0x06
C→S
HouseUserPermissionSet
Set or remove a player's house permission slot
handled
A new level of 100 removes the slot.
0x07
C→S
HousePermissionSet
Save one house permission level's flags
handled
0x08
S→C
HouseEnter
Enter house interior: model, emblem, rug colours
sent
0x09
S→C
HousingItem
House interior furniture list or single item update
2 sub-types
sent
| Value | Sub-type | Note |
|---|---|---|
| 0x00 | update | single item add/change/remove |
| 0x80 | complete | full furniture list |
0x0A
S→C
HouseExit
Leave house interior
sent
0x0B
C→S
HouseEnterLeave
Enter or leave a house
2 sub-types
handled
| Value | Sub-type | Note |
|---|---|---|
| 0 | leave | |
| 1 | enter | requires within 1000 units and entry permission |
0x0C
C→S
HousePlaceItem
Place item, decoration or rent money in a house
7 sub-types
handled
| Value | Sub-type | Note |
|---|---|---|
| 1 | garden | server-forced for garden object type 49 |
| 2 | wall | client-sent |
| 3 | floor | client-sent |
| 4 | porch | server-forced for porch/consignment deeds |
| 5 | hookpoint | server-forced for object types 53/55/68 |
| 6 | banner/shield | server-forced for object types 57/58/66/67 |
| 7 | vault | server-forced for HouseVault on hookpoint |
0x0D
C→S
PlayerPickupHouseItem
Remove a placed house item back to inventory
3 sub-types
handled
| Value | Sub-type | Note |
|---|---|---|
| 1 | garden | |
| 2 | wall | |
| 3 | floor |
0x0E
C→S
HouseDecorationRotate
Rotate a placed indoor decoration
handled
0x0F
S→C
HouseTogglePoints
Toggle house decoration placement points
sent
0x18
C→S
HouseDecorationRequest
Request rotation info for a house decoration
handled
0x18
S→C
HouseDecorationRotate
Acknowledge house decoration rotate request
sent
0xD1
S→C
HouseCreate
retail
Create or remove house on lot
2 sub-types
sent
| Value | Sub-type | Note |
|---|---|---|
| create | SendHouse | full house model/materials/name |
| remove | SendRemoveHouse | model/material bytes zeroed, byte 0x03 at offset 27, empty name |
0xD2
S→C
HouseChangeGarden
retail
House garden items or occupied flag
3 sub-types
sent
| Value | Sub-type | Note |
|---|---|---|
| count,0x80 | full garden | SendGarden(house): all outdoor items |
| 0x01,0x00 | single item update | SendGarden(house,i) |
| 0x00,flag | occupied flag | SendHouseOccupied: flag 1/0 |
Keeps, RvR & siege
23 opcodes · 1 missing in OpenDAoCNo opcodes in this family match the filters.
0x48
C→S
ShowWarmapRequest
retail
Warmap page select, refresh, or teleport
3 sub-types
handled
| Value | Sub-type | Note |
|---|---|---|
| 0 | set_page | stores realm map page |
| 1 | update | sends keep list and fight info |
| 2 | teleport | teleport to border keep (ids 1-6) or keep portal stone |
0x49
S→C
WarMapClaimedKeeps
retail
Warmap keep/tower ownership, claims, relics
sent
0x4A
S→C
WarMapDetailUpdate
retail
Warmap fight and group markers
sent
No sub-type: fight records, then group records.
0x61
S→C
KeepComponentInteractResponse
Keep component info: realm, health, level, guild
sent
0x62
S→C
KeepClaim
Keep claim/lord window
4 sub-types
sent
| Value | Sub-type | Note |
|---|---|---|
| 0 | Info | |
| 1 | KeepTargetLevel | |
| 2 | KeepLordType | |
| 4 | Release | only value sent |
0x63
S→C
KeepComponentHookpointStore
Hookpoint purchase list (guards, siege, oil)
sent
0x64
C→S
BuyHookPoint
Buy siege weapon or guard for keep hookpoint
5 sub-types
handled
| Value | Sub-type | Note |
|---|---|---|
| 0x00-0x20 | RedHPInventory | guards |
| 0x21-0x40 | BlueHPInventory | NPCs |
| 0x41-0x60 | LightGreenHPInventory | small siege |
| 0x61-0x80 | GreenHPInventory | large siege |
| 0x81+ | YellowHPInventory | oil |
0x65
S→C
KeepComponentHookpointUpdate
Free hookpoints on keep component
sent
0x66
C→S
WarmapBonusRequest
Request realm warmap bonuses
handled
0x66
S→C
WarmapBonuses
Realm keep/tower/relic bonus counts
sent
0x67
S→C
KeepComponentUpdate
Keep level and component state flags
sent
0x69
S→C
KeepInfo
Create keep: position, realm, level
sent
0x6A
S→C
KeepRealmUpdate
Keep realm and level change
sent
0x6B
S→C
KeepRemove
Remove keep
sent
0x6C
S→C
KeepComponentInfo
Create keep component (wall/tower piece)
sent
0x6D
S→C
KeepComponentDetailUpdate
Keep component health/status update
sent
0x6E
S→C
KeepComponentRemove
Remove keep component
sent
0x6F
C→S
KeepComponentInteract
Keep wall/tower info and hookpoint selection
3 sub-types
handled
| Value | Sub-type | Note |
|---|---|---|
| 0 | show_info | SendKeepComponentInteract |
| 1 | hookpoint_button | SendKeepComponentHookPoint |
| 2 | select_hookpoint | clears hookpoint and sends hookpoint store |
0xE3
S→C
SiegeWeaponAnimation
Siege weapon aim/arm/load/fire animation
5 sub-types
sent
| Value | Sub-type | Note |
|---|---|---|
| 0x00 | None | |
| 0x01 | Aiming | + target health, target ID |
| 0x02 | Arming | + target health |
| 0x03 | Loading | |
| 0x04 | Fire | SendSiegeWeaponFireAnimation |
0xE4
C→S
ShipHookPoint
Boat hookpoint interaction (switch seat)
2 sub-types
handled
Other flag values are logged as unhandled.
| Value | Sub-type | Note |
|---|---|---|
| 0 | none | |
| 3 | switch seat | move to empty boat seat |
0xE5
S→C
Keep-related guess
Handler sits among the keep handlers
never sent
0xF5
C→S
SiegeCommandRequest
Siege weapon control command
10 sub-types
handled
| Value | Sub-type | Note |
|---|---|---|
| 1 | load | select ammo (ammo byte at offset 3) |
| 2 | arm | |
| 3 | aim | |
| 4 | fire | |
| 5 | move | |
| 6 | repair | |
| 7 | salvage | |
| 8 | release | |
| 9 | stop move | |
| 10 | swing | calls Fire |
0xF5
S→C
SiegeWeaponInterface
Open/update or close siege weapon UI
2 sub-types
sent
| Value | Sub-type | Note |
|---|---|---|
| 0 | open/update | ammo list, action, name |
| 1 | close | SendSiegeWeaponCloseInterface |
Relics
8 opcodes · 5 missing in OpenDAoCNo opcodes in this family match the filters.
0x44
S→C
Minotaur relic update likely
Handler next to the relic-map handlers; opcode just below 0x45
never sent
0x45
S→C
MinotaurRelicMapRemove
Remove minotaur relic from map
sent
0x46
S→C
MinotaurRelicMapUpdate
Minotaur relic map position
sent
0x47
S→C
Minotaur relic update likely
Handler next to the relic-map handlers; opcode just above 0x46
never sent
0x4C
C→S
MinotaurRelicWindow
Minotaur relic window command (unimplemented)
client never sends
Server handler is empty.
0x59
S→C
MinotaurRelicRealm
retail
never sent
0x5A
S→C
Minotaur relic state guess
Follows 0x59 MinotaurRelicRealm in numbering and code
never sent
0x5B
S→C
Minotaur relic state guess
Follows 0x59 MinotaurRelicRealm in numbering and code
never sent
Unclassified
7 opcodes · 7 missing in OpenDAoCNo opcodes in this family match the filters.
0x23
S→C
Pairs with 0xA6 unknown
Handler related to 0xA6
never sent
0x38
S→C
Unknown unknown
never sent
0x48
S→C
Unknown unknown
never sent
0x4D
S→C
Unknown unknown
never sent
0x51
S→C
Unknown unknown
never sent
0xD5
S→C
Unknown unknown
never sent
0xED
S→C
Unknown unknown
never sent
How we know
The client side is daoc-re's map of the official 1.130 game client: every opcode its receive code dispatches, and every message it builds for its TCP and UDP send functions. The server side comes from OpenDAoC's source: the handlers it registers for client opcodes and the methods it has for each message it sends. Names, purposes and sub-types are OpenDAoC's. The comparison itself is written up in What the client knows that the server doesn't.
An opcode is not a message
Many opcodes carry a sub-type that selects a different message: chat types, update kinds, character-create operations. Character delete, for one, is operation 3 inside character create. Open a row to see its sub-types.
Guesses are marked
Opcodes OpenDAoC has no name for carry a best guess, from daoc-re's clues about where the client uses them, with how sure it is: confirmed live, likely, guess or unknown. "Retail" marks the opcodes seen in one decoded session on the official servers. We update this page as sessions confirm or correct the guesses. Corrections are welcome.
The same table, laid out as a 24 × 36 in poster, is the PDF above; the data is the JSON file.
Data generated 2026-10-28.