Difference between revisions of "Pre-release protocol"

Latest revision as of 22:19, 9 April 2024

This page documents the changes from the last stable Minecraft release (currently 1.20.4, protocol 765) to the current pre-release (currently 24w13a, protocol Snapshot 182). Note that this page contains bleeding-edge information that may not be completely or correctly documented.

One who wishes to commandeer the merging of this into Protocol when an update is made must be sure to respect any changes that may have occurred to the respective packets there.

1 Contents
- 1.1 Data types
- 1.2 Packets
2 New/modified data types
3 Entity Metadata
4 Block Actions
5 Inventories
6 Plugin Channels
7 Handshake
- 7.1 Serverbound
  - 7.1.1 Handshake
8 Status
- 8.1 Clientbound
- 8.2 Serverbound
9 Login
- 9.1 Clientbound
  - 9.1.1 Encryption Request
  - 9.1.2 Cookie Request (login)
- 9.2 Serverbound
  - 9.2.1 Cookie Response (login)
10 Configuration
- 10.1 Clientbound
- 10.2 Serverbound
  - 10.2.1 Cookie Response (configuration)
  - 10.2.2 Serverbound Known Packs
11 Play
- 11.1 Clientbound
- 11.2 Serverbound

Data types

No changes so far.

Packets

ID	Packet name	Documentation
Handshake serverbound
0x00	Handshake	Current	Pre
Login clientbound
0x01	Encryption Request	Current	Pre
0x05	Cookie Request (login)		Pre
Login serverbound
0x04	Cookie Response (login)		Pre
Configuration clientbound
0x00	Cookie Request (configuration)		Pre
~~0x00~~ 0x01	Clientbound Plugin Message (configuration)	Current	(unchanged)
~~0x01~~ 0x02	Disconnect (configuration)	Current	(unchanged)
~~0x02~~ 0x03	Finish Configuration	Current	(unchanged)
~~0x03~~ 0x04	Clientbound Keep Alive (configuration)	Current	(unchanged)
~~0x04~~ 0x05	Ping (configuration)	Current	(unchanged)
0x06	Reset Chat		Pre
~~0x05~~ 0x07	Registry Data	Current	Pre
~~0x06~~ 0x08	Remove Resource Pack (configuration)	Current	(unchanged)
~~0x07~~ 0x09	Add Resource Pack (configuration)	Current	(unchanged)
0x0A	Store Cookie (configuration)		Pre
0x0B	Transfer (configuration)		Pre
~~0x08~~ 0x0C	Feature Flags	Current	(unchanged)
~~0x09~~ 0x0D	Update Tags (configuration)	Current	(unchanged)
0x0E	Clientbound Known Packs		Pre
Configuration serverbound
0x01	Cookie Response (configuration)		Pre
~~0x01~~ 0x02	Serverbound Plugin Message (configuration)	Current	(unchanged)
~~0x02~~ 0x03	Finish Configuration	Current	(unchanged)
~~0x03~~ 0x04	Serverbound Keep Alive (configuration)	Current	(unchanged)
~~0x04~~ 0x05	Pong (configuration)	Current	(unchanged)
~~0x05~~ 0x06	Resource Pack Response (configuration)	Current	(unchanged)
0x07	Serverbound Known Packs		Pre
Play clientbound
0x16	Cookie Request (Play)		Pre
~~0x16~~ 0x17	Set Cooldown	Current	(unchanged)
~~0x17~~ 0x18	Chat Suggestions	Current	(unchanged)
~~0x18~~ 0x19	Clientbound Plugin Message (play)	Current	(unchanged)
~~0x19~~ 0x1A	Damage Event	Current	(unchanged)
0x1B	Debug Sample		Pre
~~0x1A~~ 0x1C	Delete Message	Current	(unchanged)
~~0x1B~~ 0x1D	Disconnect (play)	Current	(unchanged)
~~0x1C~~ 0x1E	Disguised Chat Message	Current	(unchanged)
~~0x1D~~ 0x1F	Entity Event	Current	(unchanged)
~~0x1E~~ 0x20	Explosion	Current	(unchanged)
~~0x1F~~ 0x21	Unload Chunk	Current	(unchanged)
~~0x20~~ 0x22	Game Event	Current	(unchanged)
~~0x21~~ 0x23	Open Horse Screen	Current	(unchanged)
~~0x22~~ 0x24	Hurt Animation	Current	(unchanged)
~~0x23~~ 0x25	Initialize World Border	Current	(unchanged)
~~0x24~~ 0x26	Clientbound Keep Alive (play)	Current	(unchanged)
~~0x25~~ 0x27	Chunk Data and Update Light	Current	(unchanged)
~~0x26~~ 0x28	World Event	Current	(unchanged)
~~0x27~~ 0x29	Particle	Current	(unchanged)
~~0x28~~ 0x2A	Update Light	Current	(unchanged)
~~0x29~~ 0x2B	Login (play)	Current	Pre
~~0x2A~~ 0x2C	Map Data	Current	(unchanged)
~~0x2B~~ 0x2D	Merchant Offers	Current	(unchanged)
~~0x2C~~ 0x2E	Update Entity Position	Current	(unchanged)
~~0x2D~~ 0x2F	Update Entity Position and Rotation	Current	(unchanged)
~~0x2E~~ 0x30	Update Entity Rotation	Current	(unchanged)
~~0x2F~~ 0x31	Move Vehicle	Current	(unchanged)
~~0x30~~ 0x32	Open Book	Current	(unchanged)
~~0x31~~ 0x33	Open Screen	Current	(unchanged)
~~0x32~~ 0x34	Open Sign Editor	Current	(unchanged)
~~0x33~~ 0x35	Ping (play)	Current	(unchanged)
~~0x34~~ 0x36	Ping Response (play)	Current	(unchanged)
~~0x35~~ 0x37	Place Ghost Recipe	Current	(unchanged)
~~0x36~~ 0x38	Player Abilities	Current	(unchanged)
~~0x37~~ 0x39	Player Chat Message	Current	(unchanged)
~~0x38~~ 0x3A	End Combat	Current	(unchanged)
~~0x39~~ 0x3B	Enter Combat	Current	(unchanged)
~~0x3A~~ 0x3C	Combat Death	Current	(unchanged)
~~0x3B~~ 0x3D	Player Info Remove	Current	(unchanged)
~~0x3C~~ 0x3E	Player Info Update	Current	(unchanged)
~~0x3D~~ 0x3F	Look At	Current	(unchanged)
~~0x3E~~ 0x40	Synchronize Player Position	Current	(unchanged)
~~0x3F~~ 0x41	Update Recipe Book	Current	(unchanged)
~~0x40~~ 0x42	Remove Entities	Current	(unchanged)
~~0x41~~ 0x43	Remove Entity Effect	Current	(unchanged)
~~0x42~~ 0x44	Reset Score	Current	(unchanged)
~~0x43~~ 0x45	Remove Resource Pack (play)	Current	(unchanged)
~~0x44~~ 0x46	Add Resource Pack (play)	Current	(unchanged)
~~0x45~~ 0x47	Respawn	Current	Pre
~~0x46~~ 0x48	Set Head Rotation	Current	(unchanged)
~~0x47~~ 0x49	Update Section Blocks	Current	(unchanged)
~~0x48~~ 0x4A	Select Advancements Tab	Current	(unchanged)
~~0x49~~ 0x4B	Server Data	Current	(unchanged)
~~0x4A~~ 0x4C	Set Action Bar Text	Current	(unchanged)
~~0x4B~~ 0x4D	Set Border Center	Current	(unchanged)
~~0x4C~~ 0x4E	Set Border Lerp Size	Current	(unchanged)
~~0x4D~~ 0x4F	Set Border Size	Current	(unchanged)
~~0x4E~~ 0x50	Set Border Warning Delay	Current	(unchanged)
~~0x4F~~ 0x51	Set Border Warning Distance	Current	(unchanged)
~~0x50~~ 0x52	Set Camera	Current	(unchanged)
~~0x51~~ 0x53	Set Held Item	Current	(unchanged)
~~0x52~~ 0x54	Set Center Chunk	Current	(unchanged)
~~0x53~~ 0x55	Set Render Distance	Current	(unchanged)
~~0x54~~ 0x56	Set Default Spawn Position	Current	(unchanged)
~~0x55~~ 0x57	Display Objective	Current	(unchanged)
~~0x56~~ 0x58	Set Entity Metadata	Current	(unchanged)
~~0x57~~ 0x59	Link Entities	Current	(unchanged)
~~0x58~~ 0x5A	Set Entity Velocity	Current	(unchanged)
~~0x59~~ 0x5B	Set Equipment	Current	(unchanged)
~~0x5A~~ 0x5C	Set Experience	Current	(unchanged)
~~0x5B~~ 0x5D	Set Health	Current	(unchanged)
~~0x5C~~ 0x5E	Update Objectives	Current	(unchanged)
~~0x5D~~ 0x5F	Set Passengers	Current	(unchanged)
~~0x5E~~ 0x60	Update Teams	Current	(unchanged)
~~0x5F~~ 0x61	Update Score	Current	(unchanged)
~~0x60~~ 0x62	Set Simulation Distance	Current	(unchanged)
~~0x61~~ 0x63	Set Subtitle Text	Current	(unchanged)
~~0x62~~ 0x64	Update Time	Current	(unchanged)
~~0x63~~ 0x65	Set Title Text	Current	(unchanged)
~~0x64~~ 0x66	Set Title Animation Times	Current	(unchanged)
~~0x65~~ 0x67	Entity Sound Effect	Current	(unchanged)
~~0x66~~ 0x68	Sound Effect	Current	(unchanged)
~~0x67~~ 0x69	Start Configuration	Current	(unchanged)
~~0x68~~ 0x6A	Stop Sound	Current	(unchanged)
0x6B	Store Cookie (Play)		Pre
~~0x69~~ 0x6C	System Chat Message	Current	(unchanged)
~~0x6A~~ 0x6D	Set Tab List Header And Footer	Current	(unchanged)
~~0x6B~~ 0x6E	Tag Query Response	Current	(unchanged)
~~0x6C~~ 0x6F	Pickup Item	Current	(unchanged)
~~0x6D~~ 0x70	Teleport Entity	Current	(unchanged)
~~0x6E~~ 0x71	Set Ticking State	Current	(unchanged)
~~0x6F~~ 0x72	Step Tick	Current	(unchanged)
0x73	Transfer (Play)		Pre
~~0x70~~ 0x74	Update Advancements	Current	(unchanged)
~~0x71~~ 0x75	Update Attributes	Current	Pre
~~0x72~~ 0x76	Entity Effect	Current	Pre
~~0x73~~ 0x77	Update Recipes	Current	(unchanged)
~~0x74~~ 0x78	Update Tags (play)	Current	(unchanged)
Play serverbound
0x04	Chat Command	Current	Pre
0x05	Signed Chat Command		Pre
~~0x05~~ 0x06	Chat Message	Current	(unchanged)
~~0x06~~ 0x07	Player Session	Current	(unchanged)
~~0x07~~ 0x08	Chunk Batch Received	Current	(unchanged)
~~0x08~~ 0x09	Client Status	Current	(unchanged)
~~0x09~~ 0x0A	Client Information (play)	Current	(unchanged)
~~0x0A~~ 0x0B	Command Suggestions Request	Current	(unchanged)
~~0x0B~~ 0x0C	Acknowledge Configuration	Current	(unchanged)
~~0x0C~~ 0x0D	Click Container Button	Current	(unchanged)
~~0x0D~~ 0x0E	Click Container	Current	(unchanged)
~~0x0E~~ 0x0F	Close Container	Current	(unchanged)
~~0x0F~~ 0x10	Change Container Slot State	Current	(unchanged)
0x11	Cookie Response (play)		Pre
~~0x10~~ 0x12	Serverbound Plugin Message (play)	Current	(unchanged)
0x13	Debug Sample Subscription		Pre
~~0x11~~ 0x14	Edit Book	Current	(unchanged)
~~0x12~~ 0x15	Query Entity Tag	Current	(unchanged)
~~0x13~~ 0x16	Interact	Current	(unchanged)
~~0x14~~ 0x17	Jigsaw Generate	Current	(unchanged)
~~0x15~~ 0x18	Serverbound Keep Alive (play)	Current	(unchanged)
~~0x16~~ 0x19	Lock Difficulty	Current	(unchanged)
~~0x17~~ 0x1A	Set Player Position	Current	(unchanged)
~~0x18~~ 0x1B	Set Player Position and Rotation	Current	(unchanged)
~~0x19~~ 0x1C	Set Player Rotation	Current	(unchanged)
~~0x1A~~ 0x1D	Set Player On Ground	Current	(unchanged)
~~0x1B~~ 0x1E	Move Vehicle	Current	(unchanged)
~~0x1C~~ 0x1F	Paddle Boat	Current	(unchanged)
~~0x1D~~ 0x20	Pick Item	Current	(unchanged)
~~0x1E~~ 0x21	Ping Request (play)	Current	(unchanged)
~~0x1F~~ 0x22	Place Recipe	Current	(unchanged)
~~0x20~~ 0x23	Player Abilities	Current	(unchanged)
~~0x21~~ 0x24	Player Action	Current	(unchanged)
~~0x22~~ 0x25	Player Command	Current	(unchanged)
~~0x23~~ 0x26	Player Input	Current	(unchanged)
~~0x24~~ 0x27	Pong (play)	Current	(unchanged)
~~0x25~~ 0x28	Change Recipe Book Settings	Current	(unchanged)
~~0x26~~ 0x29	Set Seen Recipe	Current	(unchanged)
~~0x27~~ 0x2A	Rename Item	Current	(unchanged)
~~0x28~~ 0x2B	Resource Pack Response (play)	Current	(unchanged)
~~0x29~~ 0x2C	Seen Advancements	Current	(unchanged)
~~0x2A~~ 0x2D	Select Trade	Current	(unchanged)
~~0x2B~~ 0x2E	Set Beacon Effect	Current	(unchanged)
~~0x2C~~ 0x2F	Set Held Item	Current	(unchanged)
~~0x2D~~ 0x30	Program Command Block	Current	(unchanged)
~~0x2E~~ 0x31	Program Command Block Minecart	Current	(unchanged)
~~0x2F~~ 0x32	Set Creative Mode Slot	Current	(unchanged)
~~0x30~~ 0x33	Program Jigsaw Block	Current	(unchanged)
~~0x31~~ 0x34	Program Structure Block	Current	(unchanged)
~~0x32~~ 0x35	Update Sign	Current	(unchanged)
~~0x33~~ 0x36	Swing Arm	Current	(unchanged)
~~0x34~~ 0x37	Teleport To Entity	Current	(unchanged)
~~0x35~~ 0x38	Use Item On	Current	(unchanged)
~~0x36~~ 0x39	Use Item	Current	(unchanged)

New/modified data types

No changes so far.

Entity Metadata

Type	Name	Value	Notes
0	Byte	Byte
1	VarInt	VarInt
2	VarLong	VarLong
3	Float	Float
4	String	String
5	Text Component	Text Component
6	Optional Text Component	(Boolean, Optional Text Component)	Text Component is present if the Boolean is set to true.
7	Slot	Slot
8	Boolean	Boolean
9	Rotations	(Float, Float, Float)	rotation on x, rotation on y, rotation on z
10	Position	Position
11	Optional Position	(Boolean, Optional Position)	Position is present if the Boolean is set to true.
12	Direction	VarInt Enum	Down = 0, Up = 1, North = 2, South = 3, West = 4, East = 5
13	Optional UUID	(Boolean, Optional UUID)	UUID is present if the Boolean is set to true.
14	Block State	VarInt	An ID in the block state registry.
15	Optional Block State	VarInt	0 for absent (air is unrepresentable); otherwise, an ID in the block state registry.
16	NBT	NBT
17	Particle	(VarInt, Varies)	particle type (an ID in the `minecraft:particle_type` registry), particle data (See Particles.)
18	Particles	(VarInt, Array of Particle)	length of array, particle data (See directly above.)
18 19	Villager Data	(VarInt, VarInt, VarInt)	villager type, villager profession, level (See below.)
19 20	Optional VarInt	VarInt	0 for absent; 1 + actual value otherwise. Used for entity IDs.
20 21	Pose	VarInt Enum	STANDING = 0, FALL_FLYING = 1, SLEEPING = 2, SWIMMING = 3, SPIN_ATTACK = 4, SNEAKING = 5, LONG_JUMPING = 6, DYING = 7, CROAKING = 8, USING_TONGUE = 9, SITTING = 10, ROARING = 11, SNIFFING = 12, EMERGING = 13, DIGGING = 14, SLIDING = 15, SHOOTING = 16, INHALING = 17
21 22	Cat Variant	VarInt	An ID in the `minecraft:cat_variant` registry.
22 23	Wolf Variant	VarInt	An ID in the `minecraft:wolf_variant` registry.
22 24	Frog Variant	VarInt	An ID in the `minecraft:frog_variant` registry.
23 25	Optional Global Position	(Boolean, Optional Identifier, Optional Position)	dimension identifier, position; only if the Boolean is set to true.
24 26	Painting Variant	VarInt	An ID in the `minecraft:painting_variant` registry.
25 27	Sniffer State	VarInt Enum	IDLING = 0, FEELING_HAPPY = 1, SCENTING = 2, SNIFFING = 3, SEARCHING = 4, DIGGING = 5, RISING = 6
26 28	Armadillo State	VarInt Enum	IDLE = 0, ROLLING = 1, SCARED = 2
26 29	Vector3	(Float, Float, Float)	x, y, z
27 30	Quaternion	(Float, Float, Float, Float)	x, y, z, w

Living Entity

TODO: This has changed to use the PARTICLES attribute

Wolf

Extends Tameable Animal.Inherited entity Tameable Animal does not existInherited entity Tameable Animal does not exist

Index	Type	Meaning	Default
0	Wolf Variant (22 23)	Wolf Variant	PALE
1	Boolean (8)	Is begging	false
2	VarInt (1)	Collar color (values are those used with dyes)	14 (Red)
3	VarInt (1)	Anger time	0

Armadillo

Extends Animal.

Index	Type	Meaning		Default
17	Armadillo State (26 28)	Armadillo State		IDLE

Block Actions

No changes so far.

Inventories

No changes so far.

Plugin Channels

No changes so far.

Handshake

Serverbound

Handshake

This causes the server to switch into the target state.

Packet ID	State	Bound To	Field Name	Field Type	Notes
0x00	Handshaking	Server	Protocol Version	VarInt	See protocol version numbers (currently 765 in Minecraft 1.20.4).
			Server Address	String (255)	Hostname or IP, e.g. localhost or 127.0.0.1, that was used to connect. The Notchian server does not use this information. Note that SRV records are a simple redirect, e.g. if _minecraft._tcp.example.com points to mc.example.org, users connecting to example.com will provide example.org as server address in addition to connecting to it.
			Server Port	Unsigned Short	Default is 25565. The Notchian server does not use this information.
			Next State	VarInt Enum	1 for Status, 2 for Login, 3 for Transfer.

Status

Clientbound

No changes so far.

Serverbound

No changes so far.

Login

Clientbound

Encryption Request

Packet ID	State	Bound To	Field Name	Field Type	Notes
0x01	Login	Client	Server ID	String (20)	Appears to be empty.
			Public Key Length	VarInt	Length of Public Key.
			Public Key	Byte Array	The server's public key, in bytes.
			Verify Token Length	VarInt	Length of Verify Token. Always 4 for Notchian servers.
			Verify Token	Byte Array	A sequence of random bytes generated by the server.
			Should Authenticate	Boolean

Cookie Request (login)

Requests a cookie that was previously stored.

Packet ID	State	Bound To	Field Name		Field Type		Notes
0x05	Login	Client	Key		Identifier		The identifier of the cookie.

Serverbound

Cookie Response (login)

Response to a Cookie Request (login) from the server. The Notchian server only accepts responses of up to 5 kiB in size.

Packet ID	State	Bound To	Field Name	Field Type	Notes
0x04	Login	Server	Key	Identifier	The identifier of the cookie.
			Has Payload	Boolean	The payload is only present if the cookie exists on the client.
			Payload Length	VarInt	Length of the following byte array.
			Payload	Optional Byte Array (5120)	The data of the cookie, if any.

Configuration

Clientbound

Cookie Request (configuration)

Requests a cookie that was previously stored.

Packet ID	State	Bound To	Field Name		Field Type		Notes
0x00	Configuration	Client	Key		Identifier		The identifier of the cookie.

Reset Chat

Packet ID	State	Bound To	Field Name	Field Type	Notes
0x06	Configuration	Client	no fields

Registry Data

Represents certain registries that are sent from the server and are applied on the client. The packet is sent for each of the following registries: minecraft:worldgen/biome, minecraft:chat_type, minecraft:trim_pattern, minecraft:trim_material, minecraft:wolf_variant, minecraft:dimension_type, minecraft:damage_type, and minecraft:banner_pattern.

Packet ID	State	Bound To	Field Name		Field Type		Notes
0x07	Configuration	Client	Registry Codec		NBT (Compound)		See Registry Data.
			Registry ID		Identifier
			Entry Count		VarInt		Number of entries in the following array.
			Entries	Entry ID	Array	Identifier
				Has Data		Boolean	Whether the entry has any data following.
				Data		NBT Tag	Entry data. Only present if Has Data is true.

Store Cookie (configuration)

Stores some arbitrary data on the client, which persists between server transfers. The Notchian client only accepts cookies of up to 5 kiB in size.

Packet ID	State	Bound To	Field Name		Field Type		Notes
0x0A	Configuration	Client	Key		Identifier		The identifier of the cookie.
0x0A	Configuration	Client	Payload		ByteArray(5120)		The data of the cookie.

Transfer (configuration)

Notifies the client that it should transfer to the given server. Cookies previously stored are preserved between server transfers.

Packet ID	State	Bound To	Field Name		Field Type		Notes
0x0B	Configuration	Client	Host		String		The hostname of IP of the server.
0x0B	Configuration	Client	Port		VarInt		The port of the server.

Clientbound Known Packs

Packet ID	State	Bound To	Field Name		Field Type		Notes
0x0E	Configuration	Client	Known Pack Count		VarInt		The number of known packs in the following array.
			Known Packs	Namespace	Array	String
				ID		String
				Version		String

Serverbound

Cookie Response (configuration)

Response to a Cookie Request (configuration) from the server. The Notchian server only accepts responses of up to 5 kiB in size.

Packet ID	State	Bound To	Field Name	Field Type	Notes
0x01	Configuration	Server	Key	Identifier	The identifier of the cookie.
			Has Payload	Boolean	The payload is only present if the cookie exists on the client.
			Payload Length	VarInt	Length of the following byte array.
			Payload	Optional Byte Array (5120)	The data of the cookie, if any.

Serverbound Known Packs

ID 0x07, same structure as Clientbound Known Packs. If the client specifies a pack in this packet, the server should omit its contained data from Registry Data.

Play

Clientbound

Cookie Request (play)

Requests a cookie that was previously stored.

Packet ID	State	Bound To	Field Name		Field Type		Notes
0x16	Play	Client	Key		Identifier		The identifier of the cookie.

Debug Sample

Packet ID	State	Bound To	Field Name	Field Type	Notes
0x1B	Play	Client	Sample Length	VarInt	The length of the following array.
			Sample	Long Array	TODO: What is the structure of the data in this array?
			Sample Type	VarInt Enum	The type of sample data. Currently always 0 (TICK_TIME).

Login (play)

Packet ID	State	Bound To	Field Name	Field Type	Notes
0x2B	Play	Client	Entity ID	Int	The player's Entity ID (EID).
			Is hardcore	Boolean
			Dimension Count	VarInt	Size of the following array.
			Dimension Names	Array of Identifier	Identifiers for all dimensions on the server.
			Max Players	VarInt	Was once used by the client to draw the player list, but now is ignored.
			View Distance	VarInt	Render distance (2-32).
			Simulation Distance	VarInt	The distance that the client will process specific things, such as entities.
			Reduced Debug Info	Boolean	If true, a Notchian client shows reduced information on the debug screen. For servers in development, this should almost always be false.
			Enable respawn screen	Boolean	Set to false when the doImmediateRespawn gamerule is true.
			Do limited crafting	Boolean	Whether players can only craft recipes they have already unlocked. Currently unused by the client.
			Dimension Type	~~Identifier~~ VarInt	The ID of the type of dimension in the `minecraft:dimension_type` registry, defined by the Registry Data packet.
			Dimension Name	Identifier	Name of the dimension being spawned into.
			Hashed seed	Long	First 8 bytes of the SHA-256 hash of the world's seed. Used client side for biome noise
			Game mode	Unsigned Byte	0: Survival, 1: Creative, 2: Adventure, 3: Spectator.
			Previous Game mode	Byte	-1: Undefined (null), 0: Survival, 1: Creative, 2: Adventure, 3: Spectator. The previous game mode. Vanilla client uses this for the debug (F3 + N & F3 + F4) game mode switch. (More information needed)
			Is Debug	Boolean	True if the world is a debug mode world; debug mode worlds cannot be modified and have predefined blocks.
			Is Flat	Boolean	True if the world is a superflat world; flat worlds have different void fog and a horizon at y=0 instead of y=63.
			Has death location	Boolean	If true, then the next two fields are present.
			Death dimension name	Optional Identifier	Name of the dimension the player died in.
			Death location	Optional Position	The location that the player died at.
			Portal cooldown	VarInt	The number of ticks until the player can use the portal again.
			Enforces Secure Chat	Boolean

Respawn

Packet ID	State	Bound To	Field Name	Field Type	Notes
0x47	Play	Client	Dimension Type	~~Identifier~~ VarInt	The ID of the type of dimension in the `minecraft:dimension_type` registry, defined by the Registry Data packet.
			Dimension Name	Identifier	Name of the dimension being spawned into.
			Hashed seed	Long	First 8 bytes of the SHA-256 hash of the world's seed. Used client side for biome noise
			Game mode	Unsigned Byte	0: Survival, 1: Creative, 2: Adventure, 3: Spectator.
			Previous Game mode	Byte	-1: Undefined (null), 0: Survival, 1: Creative, 2: Adventure, 3: Spectator. The previous game mode. Vanilla client uses this for the debug (F3 + N & F3 + F4) game mode switch. (More information needed)
			Is Debug	Boolean	True if the world is a debug mode world; debug mode worlds cannot be modified and have predefined blocks.
			Is Flat	Boolean	True if the world is a superflat world; flat worlds have different void fog and a horizon at y=0 instead of y=63.
			Has death location	Boolean	If true, then the next two fields are present.
			Death dimension Name	Optional Identifier	Name of the dimension the player died in.
			Death location	Optional Position	The location that the player died at.
			Portal cooldown	VarInt	The number of ticks until the player can use the portal again.
			Data kept	Byte	Bit mask. 0x01: Keep attributes, 0x02: Keep metadata. Tells which data should be kept on the client side once the player has respawned. In the Notchian implementation, this is context dependent: normal respawns (after death) keep no data; exiting the end poem/credits keeps the attributes; other dimension changes (portals or teleports) keep all data.

Store Cookie (play)

Stores some arbitrary data on the client, which persists between server transfers. The Notchian client only accepts cookies of up to 5 kiB in size.

Packet ID	State	Bound To	Field Name	Field Type	Notes
0x6B	Play	Client	Key	Identifier	The identifier of the cookie.
			Payload Length	VarInt	Length of the following byte array.
			Payload	Byte Array (5120)	The data of the cookie.

Transfer (play)

Notifies the client that it should transfer to the given server. Cookies previously stored are preserved between server transfers.

Packet ID	State	Bound To	Field Name		Field Type		Notes
0x73	Play	Client	Host		String		The hostname of IP of the server.
0x73	Play	Client	Port		VarInt		The port of the server.

Update Attributes

Sets attributes on the given entity.

Packet ID	State	Bound To	Field Name		Field Type		Notes
0x71	Play	Client	Entity ID		VarInt
			Number Of Properties		VarInt		Number of elements in the following array.
			Property	~~Key~~ Id	Array	~~Identifier~~ VarInt Enum	See below.
				Value		Double	See below.
				Number Of Modifiers		VarInt	Number of elements in the following array.
				Modifiers		Array of Modifier Data	See Attribute#Modifiers. Modifier Data defined below.

Known Key values (see also Attribute#Modifiers):

These changed between 24w03b and 24w13a, TODO: Update this

Id	Key	Default	Min	Max	Label
0	generic.armor	0.0	0.0	30.0	Armor.
1	generic.armor_toughness	0.0	0.0	20.0	Armor Toughness.
2	generic.attack_damage	2.0	0.0	2048.0	Attack Damage.
3	generic.attack_knockback	0.0	0.0	5.0	Attack Knockback.
4	generic.attack_speed	4.0	0.0	1024.0	Attack Speed.
5	generic.block_interaction_range	4.5	0.0	64.0	Block Interaction Range.
6	generic.entity_interaction_range	3.0	0.0	64.0	Entity Interaction Range.
7	generic.flying_speed	0.4	0.0	1024.0	Flying Speed.
8	generic.follow_range	32.0	0.0	2048.0	Follow Range.
9	horse.jump_strength	0.7	0.0	2.0	Jump Strength.
10	generic.knockback_resistance	0.0	0.0	1.0	Knockback Resistance.
11	generic.luck	0.0	-1024.0	1024.0	Luck.
12	generic.max_absorption	0.0	0.0	2048.0	Max Absorption.
13	generic.max_health	20.0	1.0	1024.0	Max Health.
14	generic.movement_speed	0.7	0.0	1024.0	Movement Speed.
15	generic.scale	1.0	0.0625	16.0	Scale.
16	zombie.spawn_reinforcements	0.0	0.0	1.0	Spawn Reinforcements Chance.
17	generic.step_height	0.6	0.0	10.0	Step Height.

Modifier Data structure:

Field Name	Field Type	Notes
UUID	UUID
Amount	Double	May be positive or negative.
Operation	Byte	See below.

The operation controls how the base value of the modifier is changed.

0: Add/subtract amount
1: Add/subtract amount percent of the current value
2: Multiply by amount percent

All of the 0's are applied first, and then the 1's, and then the 2's.

Entity Effect

Packet ID	State	Bound To	Field Name	Field Type	Notes
0x72	Play	Client	Entity ID	VarInt
			Effect ID	VarInt	See this table.
			Amplifier	Byte	Notchian client displays effect level as Amplifier + 1.
			Duration	VarInt	Duration in ticks. (-1 for infinite)
			Flags	Byte	Bit field, see below.
			Has Factor Data	Boolean	Used in DARKNESS effect
			Factor Codec	NBT Tag	See below

	The following information needs to be added to this page:
	What exact effect does the blend bit flag have on the client? What happens if it is used on effects besides DARKNESS?

Within flags:

0x01: Is ambient - was the effect spawned from a beacon? All beacon-generated effects are ambient. Ambient effects use a different icon in the HUD (blue border rather than gray). If all effects on an entity are ambient, the "Is potion effect ambient" living metadata field should be set to true. Usually should not be enabled.
0x02: Show particles - should all particles from this effect be hidden? Effects with particles hidden are not included in the calculation of the effect color, and are not rendered on the HUD (but are still rendered within the inventory). Usually should be enabled.
0x04: Show icon - should the icon be displayed on the client? Usually should be enabled.
0x08: Blend - should the effect's hard-coded blending be applied? Currently only used in the DARKNESS effect to apply extra void fog and adjust the gamma value for lighting.

~~Factor Data~~

Name	Type	Notes
padding_duration	TAG_INT
factor_start	TAG_FLOAT
factor_target	TAG_FLOAT
factor_current	TAG_FLOAT
effect_changed_timestamp	TAG_INT
factor_previous_frame	TAG_FLOAT
had_effect_last_tick	TAG_BOOLEAN

Serverbound

Chat Command

Packet ID	State	Bound To	Field Name		Field Type		Notes
0x04	Play	Server	Command		String (256)		The command typed by the client.
			Timestamp		Long		The timestamp that the command was executed.
			Salt		Long		The salt for the following argument signatures.
			Array length		VarInt		Number of entries in the following array. The maximum length in Notchian server is 8.
			Array of argument signatures	Argument name	Array (8)	String (16)	The name of the argument that is signed by the following signature.
			Array of argument signatures	Signature	Array (8)	Byte Array (256)	The signature that verifies the argument. Always 256 bytes and is not length-prefixed.
			Message Count		VarInt
			Acknowledged		Fixed BitSet (20)

Signed Chat Command

Packet ID	State	Bound To	Field Name		Field Type		Notes
0x05	Play	Server	Command		String(256)		The command typed by the client.
			Timestamp		Long		The timestamp that the command was executed. Milliseconds since the Unix epoch.
			Salt		Long		The salt for the following argument signatures.
			Argument Signature Count		VarInt		Number of elements in the following array. The maximum length in Notchian server is 8.
			Argument Signatures	Name	Array	String(16)	The name of the argument that is signed by the following signature.
			Argument Signatures	Signature	Array	ByteArray(256)	The signature that verifies the argument. Always 256 bytes and is not length-prefixed.
			Seen Messages Offset		VarInt
			Seen Messages Acknowledged		Fixed BitSet(20)

Cookie Response (play)

Response to a Cookie Request (play) from the server. The Notchian server only accepts responses of up to 5 kiB in size.

Packet ID	State	Bound To	Field Name	Field Type	Notes
0x11	Play	Server	Key	Identifier	The identifier of the cookie.
			Has Payload	Boolean	The payload is only present if the cookie exists on the client.
			Payload Length	Optional VarInt	Length of the following byte array.
			Payload	Optional Byte Array (5120)	The data of the cookie, if any.

Debug Sample Subscription

Packet ID	State	Bound To	Field Name	Field Type	Notes
0x13	Play	Server	Sample Type	VarInt Enum	The type of debug sample to subscribe to. Currently always 0 (TICK_TIME).

@@ Line 1: / Line 1: @@
-This page documents the changes from the [[Protocol|last stable Minecraft release]] (currently 1.6.2, protocol 74) to the current pre-release. Note that this page contains bleeding-edge information that may not be completely or correctly documented.
+This page documents the changes from the [[Protocol|last stable Minecraft release]] (currently [[Protocol version numbers|1.20.4, protocol 765]]) to the current pre-release (currently [[Protocol version numbers|24w13a, protocol {{Snapshot PVN|1073742006}}]]). Note that this page contains bleeding-edge information that may not be completely or correctly documented.
-He who wishes to commandeer the merging of this into [[Protocol]] when an update is made must be sure to respect any changes that may have occured to the respective packets there.
-== Protocol History ==
+One who wishes to commandeer the merging of this into [[Protocol]] when an update is made must be sure to respect any changes that may have occurred to the respective packets there.
-=== 13w36a ===
-* Added sound category byte to 0x3E
-* Changed 0xC8 to a string:int map
-=== 13w37b ===
+== Contents ==
-=== 1.6.3 ===
+<div style="float:right;">__TOC__</div>
-* Terrain fixes to help moving to 1.7, no packet changes from 1.6.2
-=== 1.6.4 ===
+=== Data types ===
-=== 13w38a/b/c ===
+No changes so far.
-=== 13w39a/b ===
+=== Packets ===
-* UUIDs added to spawn named entity
-* Game state 'gamemode' byte -> float
-=== 13w41a ===
-* Large protocol rework
-=== 13w41b ===
-{{Warning|Note this isn't backwards compatible with 13w41a due to Handshakes's Server Port type change}}
-* Removed Player (Clientbound), Player Position (Clientbound), Player Look (Clientbound)
-* Removed Player Position and Look (Clientbound)'s 'Stance'
-* Removed Join Game's 'N/A' and 'Level Type'
-* Changed Join Game's 'Gamemode' 'Difficulty' 'Max Players' types to Unsigned Byte
-* Changed Handshake's 'Server Port' type to Unsigned Short
-* Removed Respawn's 'World Height' 'Level Type'
-* Changed Respawn's 'Difficulty' and 'Gamemode' types to Unsigned Byte
-* Changed Held Item Change's 'Slot' type to Byte
-* Removed Use Bed's 'unknown byte'
-* Changed Animation's 'Animation' type to Unsigned Byte
-* Changed Animation's 'Entity ID' type to VarInt
-* Changed Spawn Player's 'Entity ID' type to VarInt
-* Changed Spawn Object's 'Entity ID' type to VarInt
-* Changed Spawn Mob's 'Entity ID' type to VarInt
-* Changed Spawn Painting's 'Entity ID' type to VarInt
-* Changed Spawn Experience Orb's 'Entity ID' type to VarInt
-* Changed Multi Block Change's 'Chunk X' and 'Chunk Z' types to VarInt
-* Changed Block Change's 'Block Type' type to VarInt
-* Changed Block Action's 'Block Type' type to VarInt
-* Changed Block Break Animation's 'Entity ID' type to VarInt
-* Changed Explosion's 'X' 'Y' and 'Z' types to Float
-* Changed Change Game State's 'Reason' type to Unsigned Byte
-* Changed Spawn Global Entity's 'Entity ID' type to VarInt
-* Changed Close Window's 'Window ID' type to Unsigned Byte
-* Changed Set Slot's 'Window ID' type to Unsigned Byte
-* Changed Window Items's 'Window ID' type to Unsigned Byte
-* Changed Window Property's 'Window ID' type to Unsigned Byte
-* Changed Comfirm Transaction's 'Window ID' type to Unsigned Byte
-* Changed Maps' 'Item Damage' type to VarInt
-* Removed Maps' 'Item Type'
-* Changed Update Block Entity's 'Action' type to Unsigned Byte
-* Block Editor Open -> Sign Editor Open
-* Removed Sign Editor Open's 'Tile Entity Id'
-* Changed Statistics's 'Count' and 'Amount' types to VarInt
-* Changed Tab-Complete from \x00 String to Array of Strings
-=== 13w42a ===
-* Added 'Level Type' to Join Game
-* Added 'Level Type' to Respawn
-* Removed Sound Effect's 'Sound Category'
-=== 13w42b ===
-== Protocol Version ==
 {| class="wikitable"
-! Version(s) !! Protocol Version
+ ! ID
-|-
+ ! Packet name
-| 13w42a/b || 1
+ !colspan="2"| Documentation
-|-
+ |-
-| 13w41b || 0
+ !colspan="4"| Handshake serverbound
-|-
+ {{PacketList|0x00|Handshake}}
-| 13w41a || 0
+ |-
-|-
+ !colspan="4"| Login clientbound
-| 13w39a/b || 80
+ {{PacketList|0x01|Encryption Request}}
-|-
+ {{PacketList|0x05|Cookie Request (login)|rel=added}}
-| 13w38a/b/c || 79
+ |-
-|-
+ !colspan="4"| Login serverbound
-| 1.6.4 || 78
+ {{PacketList|0x04|Cookie Response (login)|rel=added}}
-|-
+ |-
-| 1.6.3 || 77
+ !colspan="4"| Configuration clientbound
-|-
+ {{PacketList|0x00|Cookie Request (configuration)|rel=added}}
-| 13w37b || 76
+ {{PacketList|{{change|0x00|0x01}}|Clientbound Plugin Message (configuration)|pre=unchanged}}
-|-
+ {{PacketList|{{change|0x01|0x02}}|Disconnect (configuration)|pre=unchanged}}
-| 13w36a || 75
+ {{PacketList|{{change|0x02|0x03}}|Finish Configuration|pre=unchanged}}
-|}
+ {{PacketList|{{change|0x03|0x04}}|Clientbound Keep Alive (configuration)|pre=unchanged}}
+ {{PacketList|{{change|0x04|0x05}}|Ping (configuration)|pre=unchanged}}
+ {{PacketList|0x06|Reset Chat|rel=added}}
+ {{PacketList|{{change|0x05|0x07}}|Registry Data}}
+ {{PacketList|{{change|0x06|0x08}}|Remove Resource Pack (configuration)|pre=unchanged}}
+ {{PacketList|{{change|0x07|0x09}}|Add Resource Pack (configuration)|pre=unchanged}}
+ {{PacketList|0x0A|Store Cookie (configuration)|rel=added}}
+ {{PacketList|0x0B|Transfer (configuration)|rel=added}}
+ {{PacketList|{{change|0x08|0x0C}}|Feature Flags|pre=unchanged}}
+ {{PacketList|{{change|0x09|0x0D}}|Update Tags (configuration)|pre=unchanged}}
+ {{PacketList|0x0E|Clientbound Known Packs|rel=added}}
+ |-
+ !colspan="4"| Configuration serverbound
+ {{PacketList|0x01|Cookie Response (configuration)|rel=added}}
+ {{PacketList|{{change|0x01|0x02}}|Serverbound Plugin Message (configuration)|pre=unchanged}}
+ {{PacketList|{{change|0x02|0x03}}|Finish Configuration|pre=unchanged}}
+ {{PacketList|{{change|0x03|0x04}}|Serverbound Keep Alive (configuration)|pre=unchanged}}
+ {{PacketList|{{change|0x04|0x05}}|Pong (configuration)|pre=unchanged}}
+ {{PacketList|{{change|0x05|0x06}}|Resource Pack Response (configuration)|pre=unchanged}}
+ {{PacketList|0x07|Serverbound Known Packs|rel=added}}
+ |-
+ !colspan="4"| Play clientbound
+ {{PacketList|0x16|Cookie Request (Play)|rel=added}}
+ {{PacketList|{{change|0x16|0x17}}|Set Cooldown|pre=unchanged}}
+ {{PacketList|{{change|0x17|0x18}}|Chat Suggestions|pre=unchanged}}
+ {{PacketList|{{change|0x18|0x19}}|Clientbound Plugin Message (play)|pre=unchanged}}
+ {{PacketList|{{change|0x19|0x1A}}|Damage Event|pre=unchanged}}
+ {{PacketList|0x1B|Debug Sample|rel=added}}
+ {{PacketList|{{change|0x1A|0x1C}}|Delete Message|pre=unchanged}}
+ {{PacketList|{{change|0x1B|0x1D}}|Disconnect (play)|pre=unchanged}}
+ {{PacketList|{{change|0x1C|0x1E}}|Disguised Chat Message|pre=unchanged}}
+ {{PacketList|{{change|0x1D|0x1F}}|Entity Event|pre=unchanged}}
+ {{PacketList|{{change|0x1E|0x20}}|Explosion|pre=unchanged}}
+ {{PacketList|{{change|0x1F|0x21}}|Unload Chunk|pre=unchanged}}
+ {{PacketList|{{change|0x20|0x22}}|Game Event|pre=unchanged}}
+ {{PacketList|{{change|0x21|0x23}}|Open Horse Screen|pre=unchanged}}
+ {{PacketList|{{change|0x22|0x24}}|Hurt Animation|pre=unchanged}}
+ {{PacketList|{{change|0x23|0x25}}|Initialize World Border|pre=unchanged}}
+ {{PacketList|{{change|0x24|0x26}}|Clientbound Keep Alive (play)|pre=unchanged}}
+ {{PacketList|{{change|0x25|0x27}}|Chunk Data and Update Light|pre=unchanged}}
+ {{PacketList|{{change|0x26|0x28}}|World Event|pre=unchanged}}
+ {{PacketList|{{change|0x27|0x29}}|Particle|pre=unchanged}}
+ {{PacketList|{{change|0x28|0x2A}}|Update Light|pre=unchanged}}
+ {{PacketList|{{change|0x29|0x2B}}|Login (play)}}
+ {{PacketList|{{change|0x2A|0x2C}}|Map Data|pre=unchanged}}
+ {{PacketList|{{change|0x2B|0x2D}}|Merchant Offers|pre=unchanged}}
+ {{PacketList|{{change|0x2C|0x2E}}|Update Entity Position|pre=unchanged}}
+ {{PacketList|{{change|0x2D|0x2F}}|Update Entity Position and Rotation|pre=unchanged}}
+ {{PacketList|{{change|0x2E|0x30}}|Update Entity Rotation|pre=unchanged}}
+ {{PacketList|{{change|0x2F|0x31}}|Move Vehicle|pre=unchanged}}
+ {{PacketList|{{change|0x30|0x32}}|Open Book|pre=unchanged}}
+ {{PacketList|{{change|0x31|0x33}}|Open Screen|pre=unchanged}}
+ {{PacketList|{{change|0x32|0x34}}|Open Sign Editor|pre=unchanged}}
+ {{PacketList|{{change|0x33|0x35}}|Ping (play)|pre=unchanged}}
+ {{PacketList|{{change|0x34|0x36}}|Ping Response (play)|pre=unchanged}}
+ {{PacketList|{{change|0x35|0x37}}|Place Ghost Recipe|pre=unchanged}}
+ {{PacketList|{{change|0x36|0x38}}|Player Abilities|pre=unchanged}}
+ {{PacketList|{{change|0x37|0x39}}|Player Chat Message|pre=unchanged}}
+ {{PacketList|{{change|0x38|0x3A}}|End Combat|pre=unchanged}}
+ {{PacketList|{{change|0x39|0x3B}}|Enter Combat|pre=unchanged}}
+ {{PacketList|{{change|0x3A|0x3C}}|Combat Death|pre=unchanged}}
+ {{PacketList|{{change|0x3B|0x3D}}|Player Info Remove|pre=unchanged}}
+ {{PacketList|{{change|0x3C|0x3E}}|Player Info Update|pre=unchanged}}
+ {{PacketList|{{change|0x3D|0x3F}}|Look At|pre=unchanged}}
+ {{PacketList|{{change|0x3E|0x40}}|Synchronize Player Position|pre=unchanged}}
+ {{PacketList|{{change|0x3F|0x41}}|Update Recipe Book|pre=unchanged}}
+ {{PacketList|{{change|0x40|0x42}}|Remove Entities|pre=unchanged}}
+ {{PacketList|{{change|0x41|0x43}}|Remove Entity Effect|pre=unchanged}}
+ {{PacketList|{{change|0x42|0x44}}|Reset Score|pre=unchanged}}
+ {{PacketList|{{change|0x43|0x45}}|Remove Resource Pack (play)|pre=unchanged}}
+ {{PacketList|{{change|0x44|0x46}}|Add Resource Pack (play)|pre=unchanged}}
+ {{PacketList|{{change|0x45|0x47}}|Respawn}}
+ {{PacketList|{{change|0x46|0x48}}|Set Head Rotation|pre=unchanged}}
+ {{PacketList|{{change|0x47|0x49}}|Update Section Blocks|pre=unchanged}}
+ {{PacketList|{{change|0x48|0x4A}}|Select Advancements Tab|pre=unchanged}}
+ {{PacketList|{{change|0x49|0x4B}}|Server Data|pre=unchanged}}
+ {{PacketList|{{change|0x4A|0x4C}}|Set Action Bar Text|pre=unchanged}}
+ {{PacketList|{{change|0x4B|0x4D}}|Set Border Center|pre=unchanged}}
+ {{PacketList|{{change|0x4C|0x4E}}|Set Border Lerp Size|pre=unchanged}}
+ {{PacketList|{{change|0x4D|0x4F}}|Set Border Size|pre=unchanged}}
+ {{PacketList|{{change|0x4E|0x50}}|Set Border Warning Delay|pre=unchanged}}
+ {{PacketList|{{change|0x4F|0x51}}|Set Border Warning Distance|pre=unchanged}}
+ {{PacketList|{{change|0x50|0x52}}|Set Camera|pre=unchanged}}
+ {{PacketList|{{change|0x51|0x53}}|Set Held Item|pre=unchanged}}
+ {{PacketList|{{change|0x52|0x54}}|Set Center Chunk|pre=unchanged}}
+ {{PacketList|{{change|0x53|0x55}}|Set Render Distance|pre=unchanged}}
+ {{PacketList|{{change|0x54|0x56}}|Set Default Spawn Position|pre=unchanged}}
+ {{PacketList|{{change|0x55|0x57}}|Display Objective|pre=unchanged}}
+ {{PacketList|{{change|0x56|0x58}}|Set Entity Metadata|pre=unchanged}}
+ {{PacketList|{{change|0x57|0x59}}|Link Entities|pre=unchanged}}
+ {{PacketList|{{change|0x58|0x5A}}|Set Entity Velocity|pre=unchanged}}
+ {{PacketList|{{change|0x59|0x5B}}|Set Equipment|pre=unchanged}}
+ {{PacketList|{{change|0x5A|0x5C}}|Set Experience|pre=unchanged}}
+ {{PacketList|{{change|0x5B|0x5D}}|Set Health|pre=unchanged}}
+ {{PacketList|{{change|0x5C|0x5E}}|Update Objectives|pre=unchanged}}
+ {{PacketList|{{change|0x5D|0x5F}}|Set Passengers|pre=unchanged}}
+ {{PacketList|{{change|0x5E|0x60}}|Update Teams|pre=unchanged}}
+ {{PacketList|{{change|0x5F|0x61}}|Update Score|pre=unchanged}}
+ {{PacketList|{{change|0x60|0x62}}|Set Simulation Distance|pre=unchanged}}
+ {{PacketList|{{change|0x61|0x63}}|Set Subtitle Text|pre=unchanged}}
+ {{PacketList|{{change|0x62|0x64}}|Update Time|pre=unchanged}}
+ {{PacketList|{{change|0x63|0x65}}|Set Title Text|pre=unchanged}}
+ {{PacketList|{{change|0x64|0x66}}|Set Title Animation Times|pre=unchanged}}
+ {{PacketList|{{change|0x65|0x67}}|Entity Sound Effect|pre=unchanged}}
+ {{PacketList|{{change|0x66|0x68}}|Sound Effect|pre=unchanged}}
+ {{PacketList|{{change|0x67|0x69}}|Start Configuration|pre=unchanged}}
+ {{PacketList|{{change|0x68|0x6A}}|Stop Sound|pre=unchanged}}
+ {{PacketList|0x6B|Store Cookie (Play)|rel=added}}
+ {{PacketList|{{change|0x69|0x6C}}|System Chat Message|pre=unchanged}}
+ {{PacketList|{{change|0x6A|0x6D}}|Set Tab List Header And Footer|pre=unchanged}}
+ {{PacketList|{{change|0x6B|0x6E}}|Tag Query Response|pre=unchanged}}
+ {{PacketList|{{change|0x6C|0x6F}}|Pickup Item|pre=unchanged}}
+ {{PacketList|{{change|0x6D|0x70}}|Teleport Entity|pre=unchanged}}
+ {{PacketList|{{change|0x6E|0x71}}|Set Ticking State|pre=unchanged}}
+ {{PacketList|{{change|0x6F|0x72}}|Step Tick|pre=unchanged}}
+ {{PacketList|0x73|Transfer (Play)|rel=added}}
+ {{PacketList|{{change|0x70|0x74}}|Update Advancements|pre=unchanged}}
+ {{PacketList|{{change|0x71|0x75}}|Update Attributes}}
+ {{PacketList|{{change|0x72|0x76}}|Entity Effect}}
+ {{PacketList|{{change|0x73|0x77}}|Update Recipes|pre=unchanged}}
+ {{PacketList|{{change|0x74|0x78}}|Update Tags (play)|pre=unchanged}}
+ |-
+ !colspan="4"| Play serverbound
+ {{PacketList|0x04|Chat Command}}
+ {{PacketList|0x05|Signed Chat Command|rel=added}}
+ {{PacketList|{{change|0x05|0x06}}|Chat Message|pre=unchanged}}
+ {{PacketList|{{change|0x06|0x07}}|Player Session|pre=unchanged}}
+ {{PacketList|{{change|0x07|0x08}}|Chunk Batch Received|pre=unchanged}}
+ {{PacketList|{{change|0x08|0x09}}|Client Status|pre=unchanged}}
+ {{PacketList|{{change|0x09|0x0A}}|Client Information (play)|pre=unchanged}}
+ {{PacketList|{{change|0x0A|0x0B}}|Command Suggestions Request|pre=unchanged}}
+ {{PacketList|{{change|0x0B|0x0C}}|Acknowledge Configuration|pre=unchanged}}
+ {{PacketList|{{change|0x0C|0x0D}}|Click Container Button|pre=unchanged}}
+ {{PacketList|{{change|0x0D|0x0E}}|Click Container|pre=unchanged}}
+ {{PacketList|{{change|0x0E|0x0F}}|Close Container|pre=unchanged}}
+ {{PacketList|{{change|0x0F|0x10}}|Change Container Slot State|pre=unchanged}}
+ {{PacketList|0x11|Cookie Response (play)|rel=added}}
+ {{PacketList|{{change|0x10|0x12}}|Serverbound Plugin Message (play)|pre=unchanged}}
+ {{PacketList|0x13|Debug Sample Subscription|rel=added}}
+ {{PacketList|{{change|0x11|0x14}}|Edit Book|pre=unchanged}}
+ {{PacketList|{{change|0x12|0x15}}|Query Entity Tag|pre=unchanged}}
+ {{PacketList|{{change|0x13|0x16}}|Interact|pre=unchanged}}
+ {{PacketList|{{change|0x14|0x17}}|Jigsaw Generate|pre=unchanged}}
+ {{PacketList|{{change|0x15|0x18}}|Serverbound Keep Alive (play)|pre=unchanged}}
+ {{PacketList|{{change|0x16|0x19}}|Lock Difficulty|pre=unchanged}}
+ {{PacketList|{{change|0x17|0x1A}}|Set Player Position|pre=unchanged}}
+ {{PacketList|{{change|0x18|0x1B}}|Set Player Position and Rotation|pre=unchanged}}
+ {{PacketList|{{change|0x19|0x1C}}|Set Player Rotation|pre=unchanged}}
+ {{PacketList|{{change|0x1A|0x1D}}|Set Player On Ground|pre=unchanged}}
+ {{PacketList|{{change|0x1B|0x1E}}|Move Vehicle|pre=unchanged}}
+ {{PacketList|{{change|0x1C|0x1F}}|Paddle Boat|pre=unchanged}}
+ {{PacketList|{{change|0x1D|0x20}}|Pick Item|pre=unchanged}}
+ {{PacketList|{{change|0x1E|0x21}}|Ping Request (play)|pre=unchanged}}
+ {{PacketList|{{change|0x1F|0x22}}|Place Recipe|pre=unchanged}}
+ {{PacketList|{{change|0x20|0x23}}|Player Abilities|pre=unchanged}}
+ {{PacketList|{{change|0x21|0x24}}|Player Action|pre=unchanged}}
+ {{PacketList|{{change|0x22|0x25}}|Player Command|pre=unchanged}}
+ {{PacketList|{{change|0x23|0x26}}|Player Input|pre=unchanged}}
+ {{PacketList|{{change|0x24|0x27}}|Pong (play)|pre=unchanged}}
+ {{PacketList|{{change|0x25|0x28}}|Change Recipe Book Settings|pre=unchanged}}
+ {{PacketList|{{change|0x26|0x29}}|Set Seen Recipe|pre=unchanged}}
+ {{PacketList|{{change|0x27|0x2A}}|Rename Item|pre=unchanged}}
+ {{PacketList|{{change|0x28|0x2B}}|Resource Pack Response (play)|pre=unchanged}}
+ {{PacketList|{{change|0x29|0x2C}}|Seen Advancements|pre=unchanged}}
+ {{PacketList|{{change|0x2A|0x2D}}|Select Trade|pre=unchanged}}
+ {{PacketList|{{change|0x2B|0x2E}}|Set Beacon Effect|pre=unchanged}}
+ {{PacketList|{{change|0x2C|0x2F}}|Set Held Item|pre=unchanged}}
+ {{PacketList|{{change|0x2D|0x30}}|Program Command Block|pre=unchanged}}
+ {{PacketList|{{change|0x2E|0x31}}|Program Command Block Minecart|pre=unchanged}}
+ {{PacketList|{{change|0x2F|0x32}}|Set Creative Mode Slot|pre=unchanged}}
+ {{PacketList|{{change|0x30|0x33}}|Program Jigsaw Block|pre=unchanged}}
+ {{PacketList|{{change|0x31|0x34}}|Program Structure Block|pre=unchanged}}
+ {{PacketList|{{change|0x32|0x35}}|Update Sign|pre=unchanged}}
+ {{PacketList|{{change|0x33|0x36}}|Swing Arm|pre=unchanged}}
+ {{PacketList|{{change|0x34|0x37}}|Teleport To Entity|pre=unchanged}}
+ {{PacketList|{{change|0x35|0x38}}|Use Item On|pre=unchanged}}
+ {{PacketList|{{change|0x36|0x39}}|Use Item|pre=unchanged}}
+ |}
-== Packet format ==
+== New/modified data types ==
-{| class="wikitable"
+No changes so far.
-! Field Name !! Field Type !! Notes
-|-
-| Length || VarInt || Includes the type's length
-|-
-| Type || VarInt ||
-|-
-| Data || ||
-|}
-== Data Types ==
-{| class="wikitable"
-! Type !! Notes
-|-
-| VarInt || [http://developers.google.com/protocol-buffers/docs/encoding#varints Protocol Buffer 32-bit Varint]
-|-
-| String || UTF-8 String prefixed with a VarInt
-|-
-|Metadata || Strings are now UTF-8 too
-|}
-== Handshaking ==
+== Entity Metadata ==
-=== Serverbound ===
+{{#vardefine: meta_prerelease | 1}}
-==== Handshake ====
+{{Metadata type definition/begin}}
-This causes the server to switch into the target state.
+ ! Value
-{| class="wikitable"
+ ! Notes
-! Packet ID !! Field Name !! Field Type !! Notes
+{{Metadata type definition|Byte}}
-|-
+ | {{Type|Byte}}
-| rowspan=4 | 0x00
+ |
-| Protocol Version || VarInt ||
+{{Metadata type definition|VarInt}}
-|-
+ | {{Type|VarInt}}
-| Server Address (hostname or IP) || String || localhost
+ |
-|-
+{{Metadata type definition|VarLong}}
-| Server Port || Unsigned Short|| 25565
+ | {{Type|VarLong}}
-|-
+ |
-| Current state || VarInt || 1 for status, 2 for login
+{{Metadata type definition|Float}}
-|}
+ | {{Type|Float}}
+ |
+{{Metadata type definition|String}}
+ | {{Type|String}}
+ |
+{{Metadata type definition|Text Component}}
+ | {{Type|Text Component}}
+ |
+{{Metadata type definition|Optional Text Component}}
+ | ({{Type|Boolean}}, {{Type|Optional}} {{Type|Text Component}})
+ | Text Component is present if the Boolean is set to true.
+{{Metadata type definition|Slot}}
+ | {{Type|Slot}}
+ |
+{{Metadata type definition|Boolean}}
+ | {{Type|Boolean}}
+ |
+{{Metadata type definition|Rotations}}
+ | ({{Type|Float}}, {{Type|Float}}, {{Type|Float}})
+ | rotation on x, rotation on y, rotation on z
+{{Metadata type definition|Position}}
+ | {{Type|Position}}
+ |
+{{Metadata type definition|Optional Position}}
+ | ({{Type|Boolean}}, {{Type|Optional}} {{Type|Position}})
+ | Position is present if the Boolean is set to true.
+{{Metadata type definition|Direction}}
+ | {{Type|VarInt}} {{Type|Enum}}
+ | Down = 0, Up = 1, North = 2, South = 3, West = 4, East = 5
+{{Metadata type definition|Optional UUID}}
+ | ({{Type|Boolean}}, {{Type|Optional}} {{Type|UUID}})
+ | UUID is present if the Boolean is set to true.
+{{Metadata type definition|Block State}}
+ | {{Type|VarInt}}
+ | An ID in the block state registry.
+{{Metadata type definition|Optional Block State}}
+ | {{Type|VarInt}}
+ | 0 for absent (air is unrepresentable); otherwise, an ID in the block state registry.
+{{Metadata type definition|NBT}}
+ | {{Type|NBT}}
+ |
+{{Metadata type definition|Particle}}
+ | ({{Type|VarInt}}, Varies)
+ | particle type (an ID in the <code>minecraft:particle_type</code> registry), particle data (See [[Particles]].)
+{{Metadata type definition|Particles|rel=added}}
+ | ({{Type|VarInt}}, Array of Particle)
+ | length of array, particle data (See directly above.)
+{{Metadata type definition|Villager Data}}
+ | ({{Type|VarInt}}, {{Type|VarInt}}, {{Type|VarInt}})
+ | villager type, villager profession, level (See below.)
+{{Metadata type definition|Optional VarInt}}
+ | {{Type|VarInt}}
+ | 0 for absent; 1 + actual value otherwise. Used for entity IDs.
+{{Metadata type definition|Pose}}
+ | {{Type|VarInt}} {{Type|Enum}}
+ | STANDING = 0, FALL_FLYING = 1, SLEEPING = 2, SWIMMING = 3, SPIN_ATTACK = 4, SNEAKING = 5, LONG_JUMPING = 6, DYING = 7, CROAKING = 8, USING_TONGUE = 9, SITTING = 10, ROARING = 11, SNIFFING = 12, EMERGING = 13, DIGGING = 14{{change||2=, SLIDING = 15, SHOOTING = 16, INHALING = 17}}
+{{Metadata type definition|Cat Variant}}
+ | {{Type|VarInt}}
+ | An ID in the <code>minecraft:cat_variant</code> registry.
+{{Metadata type definition|Wolf Variant|rel=added}}
+ | {{Type|VarInt}}
+ | An ID in the <code>minecraft:wolf_variant</code> registry.
+{{Metadata type definition|Frog Variant}}
+ | {{Type|VarInt}}
+ | An ID in the <code>minecraft:frog_variant</code> registry.
+{{Metadata type definition|Optional Global Position}}
+ | ({{Type|Boolean}}, {{Type|Optional}} {{Type|Identifier}}, {{Type|Optional}} {{Type|Position}})
+ | dimension identifier, position; only if the Boolean is set to true.
+{{Metadata type definition|Painting Variant}}
+ | {{Type|VarInt}}
+ | An ID in the <code>minecraft:painting_variant</code> registry.
+{{Metadata type definition|Sniffer State}}
+ | {{Type|VarInt}} {{Type|Enum}}
+ | IDLING = 0, FEELING_HAPPY = 1, SCENTING = 2, SNIFFING = 3, SEARCHING = 4, DIGGING = 5, RISING = 6
+{{Metadata type definition|Armadillo State|rel=added}}
+ | {{Type|VarInt}} {{Type|Enum}}
+ | IDLE = 0, ROLLING = 1, SCARED = 2
+{{Metadata type definition|Vector3}}
+ | ({{Type|Float}}, {{Type|Float}}, {{Type|Float}})
+ | x, y, z
+{{Metadata type definition|Quaternion}}
+ | ({{Type|Float}}, {{Type|Float}}, {{Type|Float}}, {{Type|Float}})
+ | x, y, z, w
+ |}
-== Play ==
+=== Living Entity ===
-=== Clientbound ===
+TODO: This has changed to use the PARTICLES attribute
-==== Keep Alive ====
+=== Wolf ===
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan=1 | 0x00
-| Keep Alive ID || Int ||
-|}
+{{Metadata inherit|Wolf|inherits=Tameable Animal}}
-==== Join Game ====
 {| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
+ ! Index
-|-
+ ! Type
-| rowspan=6 | 0x01
+ !style="width: 250px;" colspan="2"| Meaning
-| Entity ID || Int || The player's Entity ID
+ ! Default
-|-
+ |- {{added}}
-| Gamemode || Unsigned Byte || 0: survival, 1: creative, 2: adventure. Bit 3 (0x8) is the hardcore flag
+ | {{Metadata id|}}
-|-
+ | {{Metadata type|Wolf Variant}}
-| Dimension || Byte || -1: nether, 0: overworld, 1: end
+ |colspan="2"| Wolf Variant
-|-
+ | PALE
-| Difficulty || Unsigned Byte || 0 thru 3 for Peaceful, Easy, Normal, Hard
+ |-
-|-
+ | {{Metadata id|}}
-| Max Players || Unsigned Byte || Used by the client to draw the player list
+ | {{Metadata type|Boolean}}
-|-
+ |colspan="2"| Is begging
-| Level Type || String || default, flat, largeBiomes, amplified, default_1_1
+ | false
-|}
+ |-
-{{Warning|If the Dimension isn't valid then the client will crash}}
+ | {{Metadata id|}}
+ | {{Metadata type|VarInt}}
+ |colspan="2"| Collar color (values are those {{Minecraft Wiki|Data_values#Dyes|used with dyes}})
+ | 14 (Red)
+ |-
+ | {{Metadata id|}}
+ | {{Metadata type|VarInt}}
+ |colspan="2"| Anger time
+ | 0
+ |}
-==== Chat Message ====
+=== Armadillo ===
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan=1 | 0x02
-| JSON Data || String || https://gist.github.com/thinkofdeath/e882ce057ed83bac0a1c
-|}
-{{Warning|Malformed JSON will disconnect the client}}
-==== Time Update ====
+{{Metadata inherit|Armadillo|inherits=Animal|start_at=17}}
-{| class="wikitable"
+{| class="wikitable" {{added}}
-! Packet ID !! Field Name !! Field Type !! Notes
+ ! Index
-|-
+ ! Type
-| rowspan=2 | 0x03
+ !style="width: 250px;" colspan="2"| Meaning
-| Age of the world || Long || In ticks; not changed by server commands
+ ! Default
-|-
+ |-
-| Time of day || Long || The world (or region) time, in ticks. If negative the sun will stop moving at the Math.abs of the time
+ | {{Metadata id|added}}
-|}
+ | {{Metadata type|Armadillo State}}
+ |colspan="2"| Armadillo State
+ | IDLE
+ |}
-==== Entity Equipment ====
+== Block Actions ==
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan=3 | 0x04
-| EntityID || Int || Entity's ID
-|-
-| Slot || Short || Equipment slot: 0=held, 1-4=armor slot (1 - boots, 2 - leggings, 3 - chestplate, 4 - helmet)
-|-
-| Item || [[Slot_Data|Slot]] || Item in slot format
-|}
-==== Spawn Position ====
+No changes so far.
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan=3 | 0x05
-| X || Int || Spawn X in block coordinates
-|-
-| Y || Int || Spawn Y in block coordinates
-|-
-| Z || Int || Spawn | in block coordinates
-|}
-==== Update Health ====
+== Inventories ==
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan=3 | 0x06
-| Health || Float || 0 or less = dead, 20 = full HP
-|-
-| Food || Short || 0 - 20
-|-
-| Food Saturation || Float || Seems to vary from 0.0 to 5.0 in integer increments
-|}
-==== Respawn ====
+No changes so far.
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan=4 | 0x07
-| Dimension || Int || -1: The Nether, 0: The Overworld, 1: The End
-|-
-| Difficulty || Unsigned Byte || 0 thru 3 for Peaceful, Easy, Normal, Hard.
-|-
-| Gamemode || Unsigned Byte || 0: survival, 1: creative, 2: adventure. The hardcore flag is not included
-|-
-| Level Type || String || Same as Join Game
-|}
-{{Warning|If the Dimension isn't valid then the client will crash}}
-==== Player Position And Look ====
+== Plugin Channels ==
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan=6| 0x08
-| X || Double || Absolute position
-|-
-| Y || Double || Absolute position
-|-
-| Z || Double || Absolute position
-|-
-| Yaw || Float || Absolute rotation on the X Axis, in degrees
-|-
-| Pitch || Float || Absolute rotation on the Y Axis, in degrees
-|-
-| On Ground || Bool || True if the client is on the ground, False otherwise
-|}
-==== Held Item Change ====
+No changes so far.
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan=1 | 0x09
-| Slot || Byte || The slot which the player has selected (0-8)
-|}
-==== Use Bed ====
+== Handshake ==
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan=5 | 0x0A
-| Entity ID || Int || Player ID
-|-
-| X || Int || Bed headboard X as block coordinate
-|-
-| Y || Unsigned Byte || Bed headboard Y as block coordinate
-|-
-| Z || Int || Bed headboard Z as block coordinate
-|}
-==== Animation ====
+=== Serverbound ===
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan=2 | 0x0B
-| Entity ID || VarInt || Player ID
-|-
-| Animation || Unsigned Byte || Animation ID
-|}
-Animation can be one of the following values:
+==== Handshake ====
-{| class="wikitable"
+This causes the server to switch into the target state.
-! ID !! Animation
-|-
-| 0 || No animation
-|-
-| 1 || Swing arm
-|-
-| 2 || Damage animation
-|-
-| 3 || Leave bed
-|-
-| 5 || Eat food
-|-
-| 6 || Critical effect
-|-
-| 7 || Magic critical effect
-|-
-| 102 || (unknown)
-|-
-| 104 || Crouch
-|-
-| 105 || Uncrouch
-|}
-==== Spawn Player ====
 {| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
+ ! Packet ID
-|-
+ ! State
-| rowspan=10 | 0x0C
+ ! Bound To
-| Entity ID || VarInt || Player's Entity ID
+ ! Field Name
-|-
+ ! Field Type
-| Player UUID || String || Player's UUID
+ ! Notes
-|-
+ |-
-| Player Name || String || Player's Name
+ | rowspan="4"| 0x00
-|-
+ | rowspan="4"| Handshaking
-| X || Int || Player X as a [[Data_Types#Fixed-point_numbers|Fixed-Point number]]
+ | rowspan="4"| Server
-|-
+ | Protocol Version
-| Y || Int || Player X as a [[Data_Types#Fixed-point_numbers|Fixed-Point number]]
+ | [[#Definitions:varint|VarInt]]
-|-
+ | See [[protocol version numbers]] (currently 765 in Minecraft 1.20.4).
-| Z || Int || Player X as a [[Data_Types#Fixed-point_numbers|Fixed-Point number]]
+ |-
-|-
+ | Server Address
-| Yaw || Byte || Player rotation as a packed byte
+ | [[#Definitions:string|String]] (255)
-|-
+ | Hostname or IP, e.g. localhost or 127.0.0.1, that was used to connect. The Notchian server does not use this information. Note that SRV records are a simple redirect, e.g. if _minecraft._tcp.example.com points to mc.example.org, users connecting to example.com will provide example.org as server address in addition to connecting to it.
-| Pitch || Byte || Player rotation as a packet byte
+ |-
-|-
+ | Server Port
-| Current Item || Short || The item the player is currently holding. Note that this should be 0 for "no item", unlike -1 used in other packets. A negative value crashes clients.
+ | [[#Definitions:unsigned-short|Unsigned Short]]
-|-
+ | Default is 25565. The Notchian server does not use this information.
-| Metadata || [[Entities#Entity_Metadata_Format|Metadata]] || The client will crash if no metadata is sent
+ |-
-|}
+ | Next State
-{{Warning|The client will crash if no metadata is sent}}
+ | [[#Definitions:varint|VarInt]] [[#Definitions:enum|Enum]]
+ | 1 for [[#Status|Status]], 2 for [[#Login|Login]]{{change||, 3 for [[#Login|Transfer]]}}.
+ |}
-==== Collect Item ====
+== Status ==
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan=2 | 0x0D
-| Collected Entity ID || Int ||
-|-
-| Collector Entity ID || Int ||
-|}
-==== Spawn Object ====
+=== Clientbound ===
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan=8| 0x0E
-| Entity ID || VarInt || Entity ID of the object
-|-
-| Type || Byte || The of object (See [[Entities#Objects|Objects]]
-|-
-| X || Int || X position as a [[Data_Types#Fixed-point_numbers|Fixed-Point number]]
-|-
-| Y || Int || Y position as a [[Data_Types#Fixed-point_numbers|Fixed-Point number]]
-|-
-| Z || Int || Z position as a [[Data_Types#Fixed-point_numbers|Fixed-Point number]]
-|-
-| Pitch || Byte || The pitch in steps of 2p/256
-|-
-| Yaw || Byte || The yaw in steps of 2p/256
-|-
-| Data || [[Object_Data|Object Data]] ||
-|}
-==== Spawn Mob ====
+No changes so far.
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan=12 | 0x0F
-| Entity ID || VarInt || Entity's ID
-|-
-| Type || Unsigned Byte || The type of mob. See [[Entities#Mobs|Mobs]]
-|-
-| X || Int || X position as a [[Data_Types#Fixed-point_numbers|Fixed-Point number]]
-|-
-| Y || Int || Y position as a [[Data_Types#Fixed-point_numbers|Fixed-Point number]]
-|-
-| Z || Int || Z position as a [[Data_Types#Fixed-point_numbers|Fixed-Point number]]
-|-
-| Pitch || Byte || The pitch in steps of 2p/256
-|-
-| Head Pitch || Byte || The pitch in steps of 2p/256
-|-
-| Yaw || Byte || The yaw in steps of 2p/256
-|-
-| Velocity X || Short ||
-|-
-| Velocity Y || Short ||
-|-
-| Velocity Z || Short ||
-|-
-| Metadata || [[Entities#Entity_Metadata_Format|Metadata]] ||
-|}
-==== Spawn Painting ====
+=== Serverbound ===
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan=6 | 0x10
-| Entity ID || VarInt || Entity's ID
-|-
-| Title || String || Name of the painting. Max length 13
-|-
-| X || Int || Center X coordinate
-|-
-| Y || Int || Center Y coordinate
-|-
-| Z || Int || Center Z coordinate
-|-
-| Direction || Int || Direction the painting faces (0 -z, 1 -x, 2 +z, 3 +x)
-|}
-==== Spawn Experience Orb ====
+No changes so far.
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan=5 | 0x11
-| Entity ID || VarInt || Entity's ID
-|-
-| X || Int || X position as a [[Data_Types#Fixed-point_numbers|Fixed-Point number]]
-|-
-| Y || Int || Y position as a [[Data_Types#Fixed-point_numbers|Fixed-Point number]]
-|-
-| Z || Int || Z position as a [[Data_Types#Fixed-point_numbers|Fixed-Point number]]
-|-
-| Count || Short || The amount of experience this orb will reward once collected
-|}
-==== Entity Velocity ====
+== Login ==
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan=4 | 0x12
-| Entity ID || Int || Entity's ID
-|-
-| Velocity X || Short || Velocity on the X axis
-|-
-| Velocity Y || Short || Velocity on the Y axis
-|-
-| Velocity Z || Short || Velocity on the Z axis
-|}
-==== Destroy Entities====
+=== Clientbound ===
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan=2 | 0x13
-| Count || Byte || Length of following array
-|-
-| Entity IDs || Array of Int || The list of entities of destroy
-|}
-==== Entity ====
+==== Encryption Request ====
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan=1 | 0x14
-| Entity ID || Int || Entity's ID
-|}
-==== Entity Relative Move ====
 {| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
+ ! Packet ID
-|-
+ ! State
-| rowspan=4| 0x15
+ ! Bound To
-| Entity ID || Int || Entity's ID
+ ! Field Name
-|-
+ ! Field Type
-| DX || Byte || Change in X position as a [[Data_Types#Fixed-point_numbers|Fixed-Point number]]
+ ! Notes
-|-
+ |-
-| DY || Byte || Change in Y position as a [[Data_Types#Fixed-point_numbers|Fixed-Point number]]
+ | rowspan="6"| 0x01
-|-
+ | rowspan="6"| Login
-| DZ || Byte || Change in Z position as a [[Data_Types#Fixed-point_numbers|Fixed-Point number]]
+ | rowspan="6"| Client
-|}
+ | Server ID
+ | {{Type|String}} (20)
+ | Appears to be empty.
+ |-
+ | Public Key Length
+ | {{Type|VarInt}}
+ | Length of Public Key.
+ |-
+ | Public Key
+ | {{Type|Byte Array}}
+ | The server's public key, in bytes.
+ |-
+ | Verify Token Length
+ | {{Type|VarInt}}
+ | Length of Verify Token. Always 4 for Notchian servers.
+ |-
+ | Verify Token
+ | {{Type|Byte Array}}
+ | A sequence of random bytes generated by the server.
+ |- {{added}}
+ | Should Authenticate
+ | {{Type|Boolean}}
+ |
+ |}
-==== Entity Look ====
+==== Cookie Request (login) ====
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan=3 | 0x16
-| Entity ID || Int || Entity's ID
-|-
-| Yaw || Byte || The X Axis rotation as a fraction of 360
-|-
-| Pitch || Byte || The Y Axis rotation as a fraction of 360
-|}
-==== Entity Look and Relative Move ====
+Requests a cookie that was previously stored.
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan=6 | 0x17
-| Entity ID || Int || Entity's ID
-|-
-| DX || Byte || Change in X position as a [[Data_Types#Fixed-point_numbers|Fixed-Point number]]
-|-
-| DY || Byte || Change in Y position as a [[Data_Types#Fixed-point_numbers|Fixed-Point number]]
-|-
-| DZ || Byte || Change in Z position as a [[Data_Types#Fixed-point_numbers|Fixed-Point number]]
-|-
-| Yaw || Byte || The X Axis rotation as a fraction of 360
-|-
-| Pitch || Byte || The Y Axis rotation as a fraction of 360
-|}
-==== Entity Teleport ====
+{| class="wikitable" {{added}}
-{| class="wikitable"
+ ! Packet ID
-! Packet ID !! Field Name !! Field Type !! Notes
+ ! State
-|-
+ ! Bound To
-| rowspan=6 | 0x18
+ ! colspan="2"| Field Name
-| Entity ID || Int || Entity's ID
+ ! colspan="2"| Field Type
-|-
+ ! Notes
-| X || Int || X position as a [[Data_Types#Fixed-point_numbers|Fixed-Point number]]
+ |-
-|-
+ | rowspan="1"| 0x05
-| Y || Int || Y position as a [[Data_Types#Fixed-point_numbers|Fixed-Point number]]
+ | rowspan="1"| Login
-|-
+ | rowspan="1"| Client
-| Z || Int || Z position as a [[Data_Types#Fixed-point_numbers|Fixed-Point number]]
+ | colspan="2"| Key
-|-
+ | colspan="2"| Identifier
-| Yaw || Byte || The X Axis rotation as a fraction of 360
+ | The identifier of the cookie.
-|-
+ |}
-| Pitch || Byte || The Y Axis rotation as a fraction of 360
-|}
-==== Entity Head Look ====
+=== Serverbound ===
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan=2 | 0x19
-| Entity ID || Int || Entity's ID
-|-
-| Head Yaw || Byte || Head yaw in steps of 2p/256
-|}
-==== Entity Status ====
+==== Cookie Response (login) ====
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan=2 | 0x1A
-| Entity ID || Int || Entity's ID
-|-
-| Entity Status || Byte || See below
-|}
-{| class="wikitable"
+Response to a [[#Cookie_Request_(login)|Cookie Request (login)]] from the server. The Notchian server only accepts responses of up to 5 kiB in size.
-|-
-! Entity Status !! Meaning
-|-
-| 2 || Entity hurt
-|-
-| 3 || Entity dead
-|-
-| 6 || Wolf taming
-|-
-| 7 || Wolf tamed
-|-
-| 8 || Wolf shaking water off itself
-|-
-| 9 || (of self) Eating accepted by server
-|-
-| 10 || Sheep eating grass
-|-
-| 11 || Iron Golem handing over a rose
-|-
-| 12 || Spawn "heart" particles near a villager
-|-
-| 13 || Spawn particles indicating that a villager is angry and seeking revenge
-|-
-| 14 || Spawn happy particles near a villager
-|-
-| 15 || Spawn a "magic" particle near the Witch
-|-
-| 16 || Zombie converting into a villager by shaking violently (unused in recent update)
-|-
-| 17 || A firework exploding
-|}
-==== Attach Entity ====
+{| class="wikitable" {{added}}
-{| class="wikitable"
+ ! Packet ID
-! Packet ID !! Field Name !! Field Type !! Notes
+ ! State
-|-
+ ! Bound To
-| rowspan=3 | 0x1B
+ ! colspan="2"| Field Name
-| Entity ID || Int || Entity's ID
+ ! colspan="2"| Field Type
-|-
+ ! Notes
-| Vehicle ID || Int || Vechicle's Entity ID
+ |-
-|-
+ | rowspan="4"| 0x04
-| Leash || Bool || If true leashes the entity to the vehicle
+ | rowspan="4"| Login
-|}
+ | rowspan="4"| Server
+ | colspan="2"| Key
+ | colspan="2"| Identifier
+ | The identifier of the cookie.
+ |-
+ | colspan="2"| Has Payload
+ | colspan="2"| Boolean
+ | The payload is only present if the cookie exists on the client.
+ |-
+ | colspan="2"| Payload Length
+ | colspan="2"| VarInt
+ | Length of the following byte array.
+ |-
+ | colspan="2"| Payload
+ | colspan="2"| Optional Byte Array (5120)
+ | The data of the cookie, if any.
+ |}
-==== Entity Metadata ====
+== Configuration ==
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan=2 | 0x1C
-| Entity ID || Int || Entity's ID
-|-
-| Metadata || [[Entities#Entity_Metadata_Format|Metadata]] ||
-|}
-==== Entity Effect ====
+=== Clientbound ===
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan=4 | 0x1D
-| Entity ID || Int || Entity's ID
-|-
-| Effect ID || Byte || See [[http://www.minecraftwiki.net/wiki/Potion_effect#Parameters]]
-|-
-| Amplifier || Byte ||
-|-
-| Duration || Short ||
-|}
-==== Remove Entity Effect ====
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan=2 | 0x1E
-| Entity ID || Int || Entity's ID
-|-
-| Effect ID || Byte ||
-|}
-==== Set Experience ====
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan=3 | 0x1F
-| Experience bar || Float || Between 0 and 1
-|-
-| Level || Short ||
-|-
-| Total Experience || Short ||
-|}
-==== Entity Properties ====
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan=3 | 0x20
-| Entity ID || Int | Entity's ID
-|-
-| Count || Int || Length of following array
-|-
-| Properties || Array of Property Data ||
-|}
-'''Property Data''' structure:
-{| class="wikitable"
-|-
-! Field Name !! Field Type !! Notes
-|-
-| Key || String ||
-|-
-| Value || Double ||
-|-
-| List Length || Short || Number of list elements that follow.
-|-
-| Modifiers || Array of Modifier Data || http://www.minecraftwiki.net/wiki/Attribute#Modifiers
-|}
-Known key values:
-{| class="wikitable"
-|-
-! Key !! Default !! Min !! Max !! Label
-|-
-| generic.maxHealth || 20.0 || 0.0 || Double.MaxValue || Max Health
-|-
-| generic.followRange || 32.0 || 0.0 || 2048.0 || Follow Range
-|-
-| generic.knockbackResistance || 0.0 || 0.0 || 1.0 || Knockback Resistance
-|-
-| generic.movementSpeed || 0.699999988079071 || 0.0 || Double.MaxValue || Movement Speed
-|-
-| generic.attackDamage || 2.0 || 0.0 || Double.MaxValue ||
-|-
-| horse.jumpStrength || 0.7 || 0.0 || 2.0 || Jump Strength
-|-
-| zombie.spawnReinforcements || 0.0 || 0.0 || 1.0 || Spawn Reinforcements Chance
-|}
-'''Modifier Data''' structure:
-{| class="wikitable"
-|-
-! Field Name !! Field Type !! Notes
-|-
-| UUID || 128-bit integer ||
-|-
-| Amount || Double ||
-|-
-| Operation || Byte ||
-|}
-==== Chunk Data ====
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan=7 | 0x21
-| Chunk X || Int || Chunk X coordinate
-|-
-| Chunk Z || Int || Chunk Z coordinate
-|-
-| Ground-Up continuous || Boolean || This is True if the packet represents all sections in this vertical column, where the primary bit map specifies exactly which sections are included, and which are air
-|-
-| Primary bit map || Unsigned Short || Bitmask with 1 for every 16x16x16 section which data follows in the compressed data.
-|-
-| Add bit map || Unsigned Short || Same as above, but this is used exclusively for the 'add' portion of the payload
-|-
-| Compressed size || Int || Size of compressed chunk data
-|-
-| Compressed data || Byte array || The chunk data is compressed using Zlib Deflate
-|}
-==== Multi Block Change ====
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan=5 | 0x22
-| Chunk X || VarInt || Chunk X coordinate
-|-
-| Chunk Z || VarInt || Chunk Z Coordinate
-|-
-| Record count || Short || The number of blocks affected
-|-
-| Data size || Int ||  The total size of the data, in bytes. Should always be 4*record count
-|-
-| Records || Array of Records ||
-|}
-'''Record'''
-{| class="wikitable"
-|-
-! Bit mask !! Width !! Meaning
-|-
-| 00 00 00 0F || 4 bits || Block metadata
-|-
-| 00 00 FF F0 || 12 bits || Block ID
-|-
-| 00 FF 00 00 || 8 bits || Y co-ordinate
-|-
-| 0F 00 00 00 || 4 bits || Z co-ordinate, relative to chunk
-|-
-| F0 00 00 00 || 4 bits || X co-ordinate, relative to chunk
-|}
-==== Block Change ====
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan=5 | 0x23
-| X || Int || Block X Coordinate
-|-
-| Y || Unsigned Byte || Block Y Coordinate
-|-
-| Z || Int || Block Z Coordinate
-|-
-| Block Type || VarInt || The new block type for the block
-|-
-| Block Data || Unsigned Byte || The new data for the block
-|}
-==== Block Action ====
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan=6 | 0x24
-| X || Int || Block X Coordinate
-|-
-| Y || Short || Block Y Coordinate
-|-
-| Z || Int || Block Z Coordinate
-|-
-| Byte 1 || Unsigned Byte || Varies depending on block - see [[Block_Actions]]
-|-
-| Byte 2 || Unsigned Byte || Varies depending on block - see [[Block_Actions]]
-|-
-| Block Type || VarInt || The block type for the block
-|}
-==== Block Break Animation ====
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan=5 | 0x25
-| Entity ID || VarInt || Entity's ID
-|-
-| X || Int || rowspan=3 | Block Position
-|-
-| Y || Int
-|-
-| Z || Int
-|-
-| Destroy Stage || Byte || 0 - 9
-|}
-==== Map Chunk Bulk ====
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan=5 | 0x26
-| Chunk column count || Short || The number of chunk in this packet
-|-
-| Data length || Int || The size of the data field
-|-
-| Sky light sent || Bool || Whether or not the chunk data contains a light nibble array. This is true in the main world, false in the end + nether
-|-
-| Data || Byte Array || Compressed chunk data
-|-
-| Meta information || Meta || See below
-|}
-'''Meta'''
-{| class="wikitable"
-! Field Name !! Field Type !! Notes
-|-
-|Chunk X || Int || The X Coordinate of the chunk
-|-
-|Chunk Z || Int || The Z Coordinate of the chunk
-|-
-|Primary bitmap || Unsigned Short || A bitmap which specifies which sections are not empty in this chunk
-|-
-|Add bitmap || Unsigned Short || A bitmap which specifies which sections need add information because of very high block ids. not yet used
-|}
-==== Explosion ====
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan="9" | 0x27
-| X || Float ||
-|-
-| Y || Float ||
-|-
-| Z || Float ||
-|-
-| Radius || Float || Currently unused in the client
-|-
-| Record count || Int || This is the count, not the size. The size is 3 times this value.
-|-
-| Records || (Byte, Byte, Byte) × count || Each record is 3 signed bytes long, each bytes are the XYZ (respectively) offsets of affected blocks.
-|-
-| Player Motion X || Float || X velocity of the player being pushed by the explosion
-|-
-| Player Motion Y || Float || Y velocity of the player being pushed by the explosion
-|-
-| Player Motion Z || Float || Z velocity of the player being pushed by the explosion
-|}
-==== Effect ====
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan="6" | 0x28
-| Effect ID || Int || The ID of the effect, see below.
-|-
-| X || Int || The X location of the effect multiplied by 8
-|-
-| Y || Byte || The Y location of the effect multiplied by 8
-|-
-| Z || Int || The Z location of the effect multiplied by 8
-|-
-| Data || Int || Extra data for certain effects, see below.
-|-
-| Disable relative volume || Bool || See above
-|}
-'''Sound''':
-*1000: <code>random.click</code>
-*1001: <code>random.click</code>
-*1002: <code>random.bow</code>
-*1003: <code>random.door_open</code> or <code>random.door_close</code> (50/50 chance)
-*1004: <code>random.fizz</code>
-*1005: Play a music disc. '''Data''': [http://www.minecraftwiki.net/wiki/Music_Discs Record ID]
-*''(1006 not assigned)''
-*1007: <code>mob.ghast.charge</code>
-*1008: <code>mob.ghast.fireball</code>
-*1009: <code>mob.ghast.fireball</code>, but with a lower volume.
-*1010: <code>mob.zombie.wood</code>
-*1011: <code>mob.zombie.metal</code>
-*1012: <code>mob.zombie.woodbreak</code>
-*1013: <code>mob.wither.spawn</code>
-*1014: <code>mob.wither.shoot</code>
-*1015: <code>mob.bat.takeoff</code>
-*1016: <code>mob.zombie.infect</code>
-*1017: <code>mob.zombie.unfect</code>
-*1018: <code>mob.enderdragon.end</code>
-*1020: <code>random.anvil_break</code>
-*1021: <code>random.anvil_use</code>
-*1022: <code>random.anvil_land</code>
-'''Particle''':
-*2000: Spawns 10 smoke particles, e.g. from a fire. '''Data''': direction, see below
-*2001: Block break. '''Data''': [http://www.minecraftwiki.net/wiki/Data_values Block ID]
-*2002: Splash potion. Particle effect + glass break sound. '''Data''': [http://www.lb-stuff.com/Minecraft/PotionDataValues1.9pre3.txt Potion ID]
-*2003: Eye of ender entity break animation - particles and sound
-*2004: Mob spawn particle effect: smoke + flames
-*2005: Spawn "happy villager" effect (hearts).
-Smoke directions:
-{| class="wikitable"
-! ID !! Direction
-|-
-| 0 || South - East
-|-
-| 1 || South
-|-
-| 2 || South - West
-|-
-| 3 || East
-|-
-| 4 || (Up or middle ?)
-|-
-| 5 || West
-|-
-| 6 || North - East
-|-
-| 7 || North
-|-
-| 8 || North - West
-|}
-==== Sound Effect ====
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan="7" | 0x29
-| Sound name || String ||
-|-
-| Effect position X || Int || Effect X multiplied by 8
-|-
-| Effect position Y || Int || Effect Y multiplied by 8
-|-
-| Effect position Z || Int || Effect Z multiplied by 8
-|-
-| Volume || Float || 1 is 100%, can be more
-|-
-| Pitch || Unsigned Byte || 63 is 100%, can be more
-|}
-==== Particle ====
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan="9" | 0x2A
-| Particle name || String || The name of the particle to create. A list can be found [https://gist.github.com/thinkofdeath/5110835 here]
-|-
-| X || Float || X position of the particle
-|-
-| Y || Float || Y position of the particle
-|-
-| Z || Float || Z position of the particle
-|-
-| Offset X || Float || This is added to the X position after being multiplied by random.nextGaussian()
-|-
-| Offset Y || Float || This is added to the Y position after being multiplied by random.nextGaussian()
-|-
-| Offset Z || Float || This is added to the Z position after being multiplied by random.nextGaussian()
-|-
-| Particle speed || Float || The speed of each particle
-|-
-| Number of particles || Int || The number of particles to create
-|}
-==== Change Game State ====
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan="2" | 0x2B
-| Reason || Unsigned Byte ||
-|-
-| Value || Float || Depends on reason
-|}
-'''Reason codes'''
-{| class="wikitable"
-! Code !! Effect !! Notes
-|-
-| 0 || Invalid Bed || "tile.bed.notValid"
-|-
-| 1 || Begin raining ||
-|-
-| 2 || End raining ||
-|-
-| 3 || Change game mode || "gameMode.changed" 0 - Survival, 1 - Creative, 2 - Adventure
-|-
-| 4 || Enter credits ||
-|-
-| 5 || Demo messages || 0 - Show welcome to demo screen, 101 - Tell movement controls, 102 - Tell jump control, 103 - Tell inventory control
-|-
-| 6 | Bow hit sound ||
-|-
-| 7 || Fade value || The current darkness value. 1 = Dark, 0 = Bright, Setting the value higher causes the game to change color and freeze
-|-
-| 8 || Fade time || Time in ticks for the sky to fade
-|}
-==== Spawn Global Entity ====
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan="5" | 0x2C
-| Entity ID || VarInt || The entity ID of the thunderbolt
-|-
-| Type || Byte || The global entity type, currently always 1 for thunderbolt.
-|-
-| X || Int || Thunderbolt X a [[Data_Types#Fixed-point_numbers|fixed-point number]]
-|-
-| Y || Int || Thunderbolt Y a [[Data_Types#Fixed-point_numbers|fixed-point number]]
-|-
-| Z || Int || Thunderbolt Z a [[Data_Types#Fixed-point_numbers|fixed-point number]]
-|}
-==== Open Window ====
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan="6" | 0x2D
-| Window id || Unsigned Byte || A unique id number for the window to be displayed.  Notchian server implementation is a counter, starting at 1.
-|-
-| Inventory Type || Unsigned Byte || The window type to use for display.  Check below
-|-
-| Window title || String || The title of the window.
-|-
-| Number of Slots || Unsigned Byte || Number of slots in the window (excluding the number of slots in the player inventory).
-|-
-| Use provided window title || Bool || If false, the client will look up a string like "window.minecart". If true, the client uses what the server provides.
-|-
-| Entity ID || Int || EntityHorse's entityId. Only sent when window type is equal to 11 (AnimalChest).
-|}
-See [[Inventory#Windows|inventory windows]] for further information.
-==== Close Window ====
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| 0x2E
-| Window ID || Unsigned Byte || This is the id of the window that was closed. 0 for inventory.
-|}
-==== Set Slot ====
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan="3" | 0x2F
-| Window ID || Unsigned Byte
-| The window which is being updated. 0 for player inventory. Note that all known window types include the player inventory. This packet will only be sent for the currently opened window while the player is performing actions, even if it affects the player inventory. After the window is closed, a number of these packets are sent to update the player's inventory window (0).
-|-
-| Slot || Short || The slot that should be updated
-|-
-| Slot data || [[Slot_Data|Slot]] ||
-|}
-==== Window Items ====
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan="3" | 0x30
-| Window ID || Unsigned Byte || The id of window which items are being sent for. 0 for player inventory.
-|-
-| Count || Short || The number of slots (see below)
-|-
-| Slot data || Array of [[Slot_Data|Slot]]s ||
-|}
-See [[Inventory#Windows|inventory windows]] for further information about how slots are indexed.
-==== Window Property ====
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan="3" | 0x31
-| Window ID || Unsigned Byte || The id of the window.
-|-
-| Property || Short || Which property should be updated.
-|-
-| Value || Short || The new value for the property.
-|}
-'''Furnace'''
-Properties:
-* 0: Progress arrow
-* 1: Fire icon (fuel)
-Values:
-* 0-200 for progress arrow
-* 0-200 for fuel indicator
-Ranges are presumably in in-game ticks
-'''Enchantment Table'''
+==== Cookie Request (configuration) ====
-Properties: 0, 1 or 2 depending on the "enchantment slot" being given.
+Requests a cookie that was previously stored.
-Values: The enchantment's level.
+{| class="wikitable" {{added}}
+ ! Packet ID
+ ! State
+ ! Bound To
+ ! colspan="2"| Field Name
+ ! colspan="2"| Field Type
+ ! Notes
+ |-
+ | rowspan="1"| 0x00
+ | rowspan="1"| Configuration
+ | rowspan="1"| Client
+ | colspan="2"| Key
+ | colspan="2"| Identifier
+ | The identifier of the cookie.
+ |}
-==== Confirm Transaction  ====
+==== Reset Chat ====
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan="3" | 0x32
-| Window ID || Unsigned Byte || The id of the window that the action occurred in.
-|-
-| Action number || Short || Every action that is to be accepted has a unique number. This field corresponds to that number.
-|-
-| Accepted || Bool || Whether the action was accepted.
-|}
-==== Update Sign ====
+{| class="wikitable" {{added}}
-{| class="wikitable"
+ ! Packet ID
-! Packet ID !! Field Name !! Field Type !! Notes
+ ! State
-|-
+ ! Bound To
-| rowspan="7" | 0x33
+ ! Field Name
-| X || Int || Block X Coordinate
+ ! Field Type
-|-
+ ! Notes
-| Y || Short || Block Y Coordinate
+ |-
-|-
+ | 0x06
-| Z || Int || Block Z Coordinate
+ | Configuration
-|-
+ | Client
-| Line 1 || String || First line of text in the sign
+ | colspan="3"| ''no fields''
-|-
+ |}
-| Line 2 || String || Second line of text in the sign
-|-
-| Line 3 || String || Third line of text in the sign
-|-
-| Line 4 || String || Fourth line of text in the sign
-|}
-==== Maps ====
+==== Registry Data ====
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan="4" | 0x34
-| Item Damage || VarInt || The damage value of the map being modified
-|-
-| Length || Short || Length of following byte array
-|-
-| Data || Byte Array || Array data
-|}
-If the first byte of the array is 0, the next two bytes are X start and Y start and the rest of the bytes are the colors in that column.
+Represents certain registries that are sent from the server and are applied on the client. {{change||The packet is sent for each of the following registries: <code>minecraft:worldgen/biome</code>, <code>minecraft:chat_type</code>, <code>minecraft:trim_pattern</code>, <code>minecraft:trim_material</code>, <code>minecraft:wolf_variant</code>, <code>minecraft:dimension_type</code>, <code>minecraft:damage_type</code>, and <code>minecraft:banner_pattern</code>.}}
-If the first byte of the array is 1, the rest of the bytes are in groups of three: (data, x, y). The lower half of the data is the type (always 0 under vanilla) and the upper half is the direction.
-If the first byte of the array is 2, the second byte is the map scale.
-==== Update Block Entity ====
 {| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
+ ! Packet ID
-|-
+ ! State
-| rowspan="6" | 0x35
+ ! Bound To
-| X || Int ||
+ ! colspan="2"| Field Name
-|-
+ ! colspan="2"| Field Type
-| Y || Short ||
+ ! Notes
-|-
+ |-
-| Z || Int ||
+ | rowspan="6"| 0x07
-|-
+ | rowspan="6"| Configuration
-| Action || Unsigned Byte || The type of update to perform
+ | rowspan="6"| Client
-|-
+ |{{removed}} colspan="2"| Registry Codec
-| Data length || Short || Varies
+ |{{removed}} colspan="2"| {{Type|NBT}} (Compound)
-|-
+ |{{removed}}| See [[Registry Data]].
-| NBT Data || Byte Array || Present if data length > 0. Compressed with [[wikipedia:Gzip|gzip]]. Varies
+ |- {{added}}
-|}
+ | colspan="2"| Registry ID
+ | colspan="2"| Identifier
-'''Actions'''
+ |
+ |- {{added}}
+ | colspan="2"| Entry Count
+ | colspan="2"| VarInt
+ | Number of entries in the following array.
+ |- {{added}}
+ | rowspan="3"| Entries
+ | Entry ID
+ | rowspan="3"| Array
+ | Identifier
+ |
+ |- {{added}}
+ | Has Data
+ | Boolean
+ | Whether the entry has any data following.
+ |- {{added}}
+ | Data
+ | NBT Tag
+ | Entry data. Only present if Has Data is true.
+ |}
-* '''1''': Set mob displayed inside a mob spawner. Custom 1 contains the [[Entities#Mobs|mob type]]
+==== Store Cookie (configuration) ====
-==== Sign Editor Open ====
+Stores some arbitrary data on the client, which persists between server transfers. The Notchian client only accepts cookies of up to 5 kiB in size.
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan="3" | 0x36
-| X || Int || X in block coordinates
-|-
-| Y || Int || Y in block coordinates
-|-
-| Z || Int || Z in block coordinates
-|}
-==== Statistics ====
+{| class="wikitable" {{added}}
-{| class="wikitable"
+ ! Packet ID
-! Packet ID
+ ! State
-! colspan="2" | Field Name
+ ! Bound To
-! Field Type !! Notes
+ ! colspan="2"| Field Name
-|-
+ ! colspan="2"| Field Type
-| rowspan="3" | 0x37
+ ! Notes
-| colspan="2" | Count || VarInt || Number of entrys
+ |-
-|-
+ | rowspan="2"| 0x0A
-| rowspan=2 | Entry
+ | rowspan="2"| Configuration
-| Statistic's name || String ||
+ | rowspan="2"| Client
-|-
+ | colspan="2"| Key
-| Amount || VarInt || The amount to increase by
+ | colspan="2"| Identifier
-|}
+ | The identifier of the cookie.
+ |-
+ | colspan="2"| Payload
+ | colspan="2"| ByteArray(5120)
+ | The data of the cookie.
+ |}
-==== Player List Item ====
+==== Transfer (configuration) ====
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan="3" | 0x38
-| Player name || String || Supports chat colouring, limited to 16 characters.
-|-
-| Online || Bool || The client will remove the user from the list if false.
-|-
-| Ping || Short || Ping, presumably in ms.
-|}
-==== Player Abilities ====
+Notifies the client that it should transfer to the given server. Cookies previously stored are preserved between server transfers.
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan="3" | 0x39
-| Flags || Byte ||
-|-
-| Flying speed || Float|| previous integer value divided by 250
-|-
-| Walking speed || Float || previous integer value divided by 250
-|}
-==== Tab-Complete ====
+{| class="wikitable" {{added}}
-{| class="wikitable"
+ ! Packet ID
-! Packet ID !! Field Name !! Field Type !! Notes
+ ! State
-|-
+ ! Bound To
-| rospan=2| 0x3A
+ ! colspan="2"| Field Name
-| Count || VarInt || Number of following strings
+ ! colspan="2"| Field Type
-|-
+ ! Notes
-| Match || String || Possible Tab-Complete
+ |-
-|}
+ | rowspan="2"| 0x0B
+ | rowspan="2"| Configuration
+ | rowspan="2"| Client
+ | colspan="2"| Host
+ | colspan="2"| String
+ | The hostname of IP of the server.
+ |-
+ | colspan="2"| Port
+ | colspan="2"| VarInt
+ | The port of the server.
+ |}
-==== Scoreboard Objective ====
+==== Clientbound Known Packs ====
-{| class="wikitable"
+{| class="wikitable" {{added}}
-! Packet ID !! Field Name !! Field Type !! Notes
+ ! Packet ID
-|-
+ ! State
-| rowspan="3" | 0x3B
+ ! Bound To
-| Objective name || String || An unique name for the objective
+ ! colspan="2"| Field Name
-|-
+ ! colspan="2"| Field Type
-| Objective value || String || The text to be displayed for the score.
+ ! Notes
-|-
+ |-
-| Create/Remove || Byte || 0 to create the scoreboard. 1 to remove the scoreboard. 2 to update the display text.
+ | rowspan="4"| 0x0E
-|}
+ | rowspan="4"| Configuration
+ | rowspan="4"| Client
-==== Update Score ====
+ | colspan="2"| Known Pack Count
-{| class="wikitable"
+ | colspan="2"| VarInt
-! Packet ID !! Field Name !! Field Type !! Notes
+ | The number of known packs in the following array.
-|-
+ |-
-| rowspan="4" | 0x3C
+ | rowspan="3"| Known Packs
-| Item Name || String || An unique name to be displayed in the list.
+ | Namespace
-|-
+ | rowspan="3"| Array
-| Update/Remove || Byte || 0 to create/update an item. 1 to remove an item.
+ | String
-|-
+ |
-| Score Name || String || The unique name for the scoreboard to be updated. Only sent when Update/Remove does not equal 1.
+ |-
-|-
+ | ID
-| Value || Int || The score to be displayed next to the entry. Only sent when Update/Remove does not equal 1.
+ | String
-|}
+ |
+ |-
-==== Display Scoreboard ====
+ | Version
-{| class="wikitable"
+ | String
-! Packet ID !! Field Name !! Field Type !! Notes
+ |
-|-
+ |}
-| rowspan="2" | 0x3D
-| Position || Byte || The position of the scoreboard. 0 = list, 1 = sidebar, 2 = belowName.
-|-
-| Score Name || String || The unique name for the scoreboard to be displayed.
-|}
-==== Teams ====
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan="8" | 0x3E
-| Team Name || String || A unique name for the team. (Shared with scoreboard).
-|-
-| Mode || Byte || If 0 then the team is created.
-If 1 then the team is removed.
-If 2 the team team information is updated.
-If 3 then new players are added to the team.
-If 4 then players are removed from the team.
-|-
-| Team Display Name || String || Only if Mode = 0 or 2.
-|-
-| Team Prefix || String || Only if Mode = 0 or 2. Displayed before the players' name that are part of this team.
-|-
-| Team Suffix || String || Only if Mode = 0 or 2. Displayed after the players' name that are part of this team.
-|-
-| Friendly fire || Byte || Only if Mode = 0 or 2; 0 for off, 1 for on, 3 for seeing friendly invisibles
-|-
-| Player count || Short || Only if Mode = 0 or 3 or 4. Number of players in the array
-|-
-| Players || Array of strings || Only if Mode = 0 or 3 or 4. Players to be added/remove from the team.
-|}
-==== Plugin Message ====
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan="3" | 0x3F
-| Channel || String || Name of the "channel" used to send the data.
-|-
-| Length || Short || Length of the following byte array
-|-
-| Data || Byte Array || Any data.
-|}
-More documentation on this: http://dinnerbone.com/blog/2012/01/13/minecraft-plugin-channels-messaging/
-==== Disconnect ====
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| 0x40
-| Reason || String || Displayed to the client when the connection terminates
-|}
 === Serverbound ===
-==== Keep Alive ====
+==== Cookie Response (configuration) ====
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan=1 | 0x00
-| Keep Alive ID || Int ||
-|}
-==== Chat Message ====
+Response to a [[#Cookie_Request_(configuration)|Cookie Request (configuration)]] from the server. The Notchian server only accepts responses of up to 5 kiB in size.
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan=1 | 0x01
-| JSON Data || String || https://gist.github.com/thinkofdeath/e882ce057ed83bac0a1c
-|}
-==== Use Entity ====
+{| class="wikitable" {{added}}
-{| class="wikitable"
+ ! Packet ID
-! Packet ID !! Field Name !! Field Type !! Notes
+ ! State
-|-
+ ! Bound To
-| rowspan=2 | 0x02
+ ! colspan="2"| Field Name
-| Target || Int ||
+ ! colspan="2"| Field Type
-|-
+ ! Notes
-| Mouse || Byte ||
+ |-
-|}
+ | rowspan="4"| 0x01
+ | rowspan="4"| Configuration
+ | rowspan="4"| Server
+ | colspan="2"| Key
+ | colspan="2"| Identifier
+ | The identifier of the cookie.
+ |-
+ | colspan="2"| Has Payload
+ | colspan="2"| Boolean
+ | The payload is only present if the cookie exists on the client.
+ |-
+ | colspan="2"| Payload Length
+ | colspan="2"| VarInt
+ | Length of the following byte array.
+ |-
+ | colspan="2"| Payload
+ | colspan="2"| Optional Byte Array (5120)
+ | The data of the cookie, if any.
+ |}
-==== Player ====
+==== Serverbound Known Packs ====
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan=1 | 0x03
-| On Ground || Bool || True if the client is on the ground, False otherwise
-|}
-==== Player Position ====
+ID 0x07, same structure as Clientbound Known Packs. If the client specifies a pack in this packet, the server should omit its contained data from Registry Data.
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan=5| 0x04
-| X || Double || Absolute position
-|-
-| Y || Double || Absolute position
-|-
-| Stance || Double || Used to modify the players bounding box when going up stairs, crouching, etc…
-|-
-| Z || Double || Absolute position
-|-
-| On Ground || Bool || True if the client is on the ground, False otherwise
-|}
-==== Player Look ====
+== Play ==
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan=3| 0x05
-| Yaw || Float || Absolute rotation on the X Axis, in degrees
-|-
-| Pitch || Float || Absolute rotation on the Y Axis, in degrees
-|-
-| On Ground || Bool || True if the client is on the ground, False otherwise
-|}
-==== Player Position And Look ====
+=== Clientbound ===
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan=7| 0x06
-| X || Double || Absolute position
-|-
-| Y || Double || Absolute position
-|-
-| Stance || Double || Used to modify the players bounding box when going up stairs, crouching, etc…
-|-
-| Z || Double || Absolute position
-|-
-| Yaw || Float || Absolute rotation on the X Axis, in degrees
-|-
-| Pitch || Float || Absolute rotation on the Y Axis, in degrees
-|-
-| On Ground || Bool || True if the client is on the ground, False otherwise
-|}
-==== Player Digging ====
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan="5" | 0x07
-| Status || Byte || The action the player is taking against the block (see below)
-|-
-| X || Int || Block position
-|-
-| Y || Byte || Block position
-|-
-| Z || Int || Block position
-|-
-| Face || Byte || The face being hit (see below)
-|}
-Status can (currently) be one of six values:
+==== Cookie Request (play) ====
-{| class="wikitable"
+Requests a cookie that was previously stored.
-! Meaning !! Value
-|-
-| Started digging || <code>0</code>
-|-
-| Cancelled digging || <code>1</code>
-|-
-| Finished digging || <code>2</code>
-|-
-| Drop item stack || <code>3</code>
-|-
-| Drop item || <code>4</code>
-|-
-| Shoot arrow / finish eating || <code>5</code>
-|}
-Notchian clients send a 0 (started digging) when they start digging and a 2 (finished digging) once they think they are finished. If digging is aborted, the client simply send a 1 (Cancel digging).
+{| class="wikitable" {{added}}
+ ! Packet ID
+ ! State
+ ! Bound To
+ ! colspan="2"| Field Name
+ ! colspan="2"| Field Type
+ ! Notes
+ |-
+ | rowspan="1"| 0x16
+ | rowspan="1"| Play
+ | rowspan="1"| Client
+ | colspan="2"| Key
+ | colspan="2"| Identifier
+ | The identifier of the cookie.
+ |}
-Status code 4 (drop item) is a special case.  In-game, when you use the Drop Item command (keypress 'q'), a dig packet with a status of 4, and all other values set to 0, is sent from client to server. Status code 3 is similar, but drops the entire stack.
+==== Debug Sample ====
-Status code 5 (shoot arrow / finish eating) is also a special case. The x, y and z fields are all set to 0 like above, with the exception of the face field, which is set to 255.
+{| class="wikitable" {{added}}
+ ! Packet ID
+ ! State
+ ! Bound To
+ ! Field Name
+ ! Field Type
+ ! Notes
+ |-
+ | rowspan="3"| 0x1B
+ | rowspan="3"| Play
+ | rowspan="3"| Client
+ | Sample Length
+ | VarInt
+ | The length of the following array.
+ |-
+ | Sample
+ | Long Array
+ | TODO: What is the structure of the data in this array?
+ |-
+ | Sample Type
+ | VarInt Enum
+ | The type of sample data. Currently always 0 (TICK_TIME).
+ |}
-The face can be one of six values, representing the face being hit:
+==== Login (play) ====
 {| class="wikitable"
-|-
+ ! Packet ID
-| Value || 0 || 1 || 2 || 3 || 4 || 5
+ ! State
-|-
+ ! Bound To
-| Offset || -Y || +Y || -Z || +Z || -X || +X
+ ! Field Name
-|}
+ ! Field Type
+ ! Notes
+ |-
+ | rowspan="22"| 0x2B
+ | rowspan="22"| Play
+ | rowspan="22"| Client
+ | Entity ID
+ | {{Type|Int}}
+ | The player's Entity ID (EID).
+ |-
+ | Is hardcore
+ | {{Type|Boolean}}
+ |
+ |-
+ | Dimension Count
+ | {{Type|VarInt}}
+ | Size of the following array.
+ |-
+ | Dimension Names
+ | {{Type|Array}} of {{Type|Identifier}}
+ | Identifiers for all dimensions on the server.
+ |-
+ | Max Players
+ | {{Type|VarInt}}
+ | Was once used by the client to draw the player list, but now is ignored.
+ |-
+ | View Distance
+ | {{Type|VarInt}}
+ | Render distance (2-32).
+ |-
+ | Simulation Distance
+ | {{Type|VarInt}}
+ | The distance that the client will process specific things, such as entities.
+ |-
+ | Reduced Debug Info
+ | {{Type|Boolean}}
+ | If true, a Notchian client shows reduced information on the {{Minecraft Wiki|debug screen}}.  For servers in development, this should almost always be false.
+ |-
+ | Enable respawn screen
+ | {{Type|Boolean}}
+ | Set to false when the doImmediateRespawn gamerule is true.
+ |-
+ | Do limited crafting
+ | {{Type|Boolean}}
+ | Whether players can only craft recipes they have already unlocked. Currently unused by the client.
+ |-
+ | Dimension Type
+ | {{change|Identifier|VarInt}}
+ | The ID of the type of dimension in the <code>minecraft:dimension_type</code> registry, defined by the Registry Data packet.
+ |-
+ | Dimension Name
+ | {{Type|Identifier}}
+ | Name of the dimension being spawned into.
+ |-
+ | Hashed seed
+ | {{Type|Long}}
+ | First 8 bytes of the SHA-256 hash of the world's seed. Used client side for biome noise
+ |-
+ | Game mode
+ | {{Type|Unsigned Byte}}
+ | 0: Survival, 1: Creative, 2: Adventure, 3: Spectator.
+ |-
+ | Previous Game mode
+ | {{Type|Byte}}
+ | -1: Undefined (null), 0: Survival, 1: Creative, 2: Adventure, 3: Spectator. The previous game mode. Vanilla client uses this for the debug (F3 + N & F3 + F4) game mode switch. (More information needed)
+ |-
+ | Is Debug
+ | {{Type|Boolean}}
+ | True if the world is a {{Minecraft Wiki|debug mode}} world; debug mode worlds cannot be modified and have predefined blocks.
+ |-
+ | Is Flat
+ | {{Type|Boolean}}
+ | True if the world is a {{Minecraft Wiki|superflat}} world; flat worlds have different void fog and a horizon at y=0 instead of y=63.
+ |-
+ | Has death location
+ | {{Type|Boolean}}
+ | If true, then the next two fields are present.
+ |-
+ | Death dimension name
+ | {{Type|Optional}} {{Type|Identifier}}
+ | Name of the dimension the player died in.
+ |-
+ | Death location
+ | {{Type|Optional}} {{Type|Position}}
+ | The location that the player died at.
+ |-
+ | Portal cooldown
+ | {{Type|VarInt}}
+ | The number of ticks until the player can use the portal again.
+ |-
+ | Enforces Secure Chat
+ | {{Type|Boolean}}
+ |
+ |}
-In 1.7.3, when a player opens a door with left click the server receives Packet 0xE+start digging and opens the door.
+==== Respawn ====
-==== Player Block Placement ====
-{| class="wikitable"
-|-
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan="8" | 0x08
-| X || Int || Block position
-|-
-| Y || Unsigned Byte || Block position
-|-
-| Z || Int || Block position
-|-
-| Direction || Byte || The offset to use for block/item placement (see below)
-|-
-| Held item || [[Slot_Data|Slot]] ||
-|-
-| Cursor position X || Byte || The position of the crosshair on the block
-|-
-| Cursor position Y || Byte ||
-|-
-| Cursor position Z || Byte ||
-|}
-In normal operation (ie placing a block), this packet is sent once, with the values set normally.
-This packet has a special case where X, Y, Z, and Direction are all -1. (Note that Y is unsigned so set to 255.) This special packet indicates that the currently held item for the player should have its state updated such as eating food, shooting bows, using buckets, etc.
-In a Notchian Beta client, the block or item ID corresponds to whatever the client is currently holding, and the client sends one of these packets any time a right-click is issued on a surface, so no assumptions can be made about the safety of the ID.  However, with the implementation of server-side inventory, a Notchian server seems to ignore the item ID, instead operating on server-side inventory information and holding selection. The client has been observed (1.2.5 and 1.3.2) to send both real item IDs and -1 in a single session.
-Special note on using buckets:  When using buckets, the Notchian client might send two packets:  first a normal and then a special case.  The first normal packet is sent when you're looking at a block (e.g. the water you want to scoop up).  This normal packet does not appear to do anything with a Notchian server.  The second, special case packet appears to perform the action - based on current position/orientation and with a distance check - it appears that buckets can only be used within a radius of 6 units.
-==== Held Item Change ====
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan=1 | 0x09
-| Slot || Short || The slot which the player has selected (0-8)
-|}
-==== Animation ====
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan=2 | 0x0A
-| Entity ID || Int || Player ID
-|-
-| Animation || Byte || Animation ID
-|}
-Animation can be one of the following values:
 {| class="wikitable"
-! ID !! Animation
+ ! Packet ID
-|-
+ ! State
-| 0 || No animation
+ ! Bound To
-|-
+ ! Field Name
-| 1 || Swing arm
+ ! Field Type
-|-
+ ! Notes
-| 2 || Damage animation
+ |-
-|-
+ | rowspan="12"| 0x47
-| 3 || Leave bed
+ | rowspan="12"| Play
-|-
+ | rowspan="12"| Client
-| 5 || Eat food
+ | Dimension Type
-|-
+ | {{change|Identifier|VarInt}}
-| 6 || Critical effect
+ | The ID of the type of dimension in the <code>minecraft:dimension_type</code> registry, defined by the [[Protocol#Registry_Data|Registry Data]] packet.
-|-
+ |-
-| 7 || Magic critical effect
+ | Dimension Name
-|-
+ | {{Type|Identifier}}
-| 102 || (unknown)
+ | Name of the dimension being spawned into.
-|-
+ |-
-| 104 || Crouch
+ | Hashed seed
-|-
+ | {{Type|Long}}
-| 105 || Uncrouch
+ | First 8 bytes of the SHA-256 hash of the world's seed. Used client side for biome noise
-|}
+ |-
+ | Game mode
+ | {{Type|Unsigned Byte}}
+ | 0: Survival, 1: Creative, 2: Adventure, 3: Spectator.
+ |-
+ | Previous Game mode
+ | {{Type|Byte}}
+ | -1: Undefined (null), 0: Survival, 1: Creative, 2: Adventure, 3: Spectator. The previous game mode. Vanilla client uses this for the debug (F3 + N & F3 + F4) game mode switch. (More information needed)
+ |-
+ | Is Debug
+ | {{Type|Boolean}}
+ | True if the world is a {{Minecraft Wiki|debug mode}} world; debug mode worlds cannot be modified and have predefined blocks.
+ |-
+ | Is Flat
+ | {{Type|Boolean}}
+ | True if the world is a {{Minecraft Wiki|superflat}} world; flat worlds have different void fog and a horizon at y=0 instead of y=63.
+ |-
+ | Has death location
+ | {{Type|Boolean}}
+ | If true, then the next two fields are present.
+ |-
+ | Death dimension Name
+ | {{Type|Optional}} {{Type|Identifier}}
+ | Name of the dimension the player died in.
+ |-
+ | Death location
+ | {{Type|Optional}} {{Type|Position}}
+ | The location that the player died at.
+ |-
+ | Portal cooldown
+ | {{Type|VarInt}}
+ | The number of ticks until the player can use the portal again.
+ |-
+ | Data kept
+ | {{Type|Byte}}
+ | Bit mask. 0x01: Keep attributes, 0x02: Keep metadata. Tells which data should be kept on the client side once the player has respawned.
+In the Notchian implementation, this is context dependent:
+* normal respawns (after death) keep no data;
+* exiting the end poem/credits keeps the attributes;
+* other dimension changes (portals or teleports) keep all data.
+ |}
-==== Entity Action ====
+==== Store Cookie (play) ====
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan="3" | 0x0B
-| Entity ID || Int || Player ID
-|-
-| Action ID || Byte || The ID of the action, see below.
-|-
-| Jump Boost || Int || Horse jump boost. Ranged from 0 -> 100.
-|}
-Action ID can be one of the following values:
-{| class="wikitable"
-! ID !! Action
-|-
-| 1 || Crouch
-|-
-| 2 || Uncrouch
-|-
-| 3 || Leave bed
-|-
-| 4 || Start sprinting
-|-
-| 5 || Stop sprinting
-|}
-==== Steer Vehicle ====
+Stores some arbitrary data on the client, which persists between server transfers. The Notchian client only accepts cookies of up to 5 kiB in size.
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan="4" | 0x0C
-| Sideways || Float || Positive to the left of the player
-|-
-| Forward || Float || Positive forward
-|-
-| Jump || Bool ||
-|-
-| Unmount || Bool || True when leaving the vehicle
-|}
-==== Close Window ====
+{| class="wikitable" {{added}}
-{| class="wikitable"
+ ! Packet ID
-! Packet ID !! Field Name !! Field Type !! Notes
+ ! State
-|-
+ ! Bound To
-| 0x0D
+ ! colspan="2"| Field Name
-| Window id || byte || This is the id of the window that was closed. 0 for inventory.
+ ! colspan="2"| Field Type
-|}
+ ! Notes
+ |-
+ | rowspan="3"| 0x6B
+ | rowspan="3"| Play
+ | rowspan="3"| Client
+ | colspan="2"| Key
+ | colspan="2"| Identifier
+ | The identifier of the cookie.
+ |-
+ | colspan="2"| Payload Length
+ | colspan="2"| VarInt
+ | Length of the following byte array.
+ |-
+ | colspan="2"| Payload
+ | colspan="2"| Byte Array (5120)
+ | The data of the cookie.
+ |}
+==== Transfer (play) ====
-==== Click Window ====
+Notifies the client that it should transfer to the given server. Cookies previously stored are preserved between server transfers.
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan="6" | 0x0E
-| Window ID || Byte || The id of the window which was clicked. 0 for player inventory.
-|-
-| Slot || Short || The clicked slot. See below.
-|-
-| Button || Byte || The button used in the click. See below.
-|-
-| Action number || Short || A unique number for the action, used for transaction handling (See the Transaction packet).
-|-
-| Mode || Byte || Inventory operation mode. See below.
-|-
-| Clicked item || [[Slot_Data|Slot]] ||
-|}
-See [[Inventory#Windows|inventory windows]] for further information about how slots are indexed.
+{| class="wikitable" {{added}}
+ ! Packet ID
+ ! State
+ ! Bound To
+ ! colspan="2"| Field Name
+ ! colspan="2"| Field Type
+ ! Notes
+ |-
+ | rowspan="2"| 0x73
+ | rowspan="2"| Play
+ | rowspan="2"| Client
+ | colspan="2"| Host
+ | colspan="2"| String
+ | The hostname of IP of the server.
+ |-
+ | colspan="2"| Port
+ | colspan="2"| VarInt
+ | The port of the server.
+ |}
-When right-clicking on a stack of items, half the stack will be picked up and half left in the slot.  If the stack is an odd number, the half left in the slot will be smaller of the amounts.
+==== Update Attributes ====
-The Action number is actually a counter, starting at 1.  This number is used by the server as a transaction ID to send back a [[#0x6A|Transaction packet]].
+Sets {{Minecraft Wiki|Attribute|attributes}} on the given entity.
-The distinct type of click performed by the client is determined by the combination of the "Mode" and "Button" fields.
 {| class="wikitable"
-! Mode !! Button !! Slot !! Trigger
+ ! Packet ID
-|-
+ ! State
-! rowspan="2" | 0
+ ! Bound To
-| 0 || Normal || Left mouse click
+ ! colspan="2"| Field Name
-|-
+ ! colspan="2"| Field Type
-| 1 || Normal || Right mouse click
+ ! Notes
-|-
+ |-
-! rowspan="2" | 1
+ | rowspan="6"| 0x71
-| 0 || Normal || Shift + left mouse click
+ | rowspan="6"| Play
-|-
+ | rowspan="6"| Client
-| 1 || Normal || Shift + right mouse click ''(Identical behavior)''
+ | colspan="2"| Entity ID
-|-
+ | colspan="2"| VarInt
-! rowspan="5" | 2
+ |
-| 0 || Normal || Number key 1
+ |-
-|-
+ | colspan="2"| Number Of Properties
-| 1 || Normal || Number key 2
+ | colspan="2"| VarInt
-|-
+ | Number of elements in the following array.
-| 2 || Normal || Number key 3
+ |-
-|-
+ | rowspan="4"| Property
-| ...
+ | {{change|Key|Id}}
-| ...
+ | rowspan="4"| Array
-| ...
+ | {{change|Identifier|VarInt Enum}}
-|-
+ | See below.
-| 8 || Normal || Number key 9
+ |-
-|-
+ | Value
-! rowspan="1" | 3
+ | Double
-| 2 || Normal || Middle click
+ | See below.
-|-
+ |-
-! rowspan="4" | 4
+ | Number Of Modifiers
-| 0 || Normal || Drop key (Q)
+ | VarInt
-|-
+ | Number of elements in the following array.
-| 1 || Normal || Ctrl + Drop key (Ctrl-Q)
+ |-
-|-
+ | Modifiers
-| 0 || -999 || Left click outside inventory holding nothing ''(No-op)''
+ | Array of Modifier Data
-|-
+ | See {{Minecraft Wiki|Attribute#Modifiers}}. Modifier Data defined below.
-| 1 || -999 || Right click outside inventory holding nothing ''(No-op)''
+ |}
-|-
-! rowspan="6" | 5
-| 0 || -999 || Starting left mouse drag ''(Or middle mouse)''
-|-
-| 4 || -999 || Starting right mouse drag
-|-
-| 1 || Normal || Add slot for left-mouse drag
-|-
-| 5 || Normal || Add slot for right-mouse drag
-|-
-| 2 || -999 || Ending left mouse drag
-|-
-| 6 || -999 || Ending right mouse drag
-|-
-! 6
-| 0 || Normal || Double click
-|}
-Starting from version 1.5, "painting mode" is available for use in inventory windows. It is done by picking up stack of something (more than 1 items), then holding mouse button (left, right or middle) and dragging holded stack over empty (or same type in case of right button ) slots. In that case client sends the following to server after mouse button release (omitting first pickup packet which is sent as usual):
+Known Key values (see also {{Minecraft Wiki|Attribute#Modifiers}}):
-# packet with mode 5, slot -999 , button (0 for left | 4 for right);
+These changed between 24w03b and 24w13a, TODO: Update this
-# packet for every slot painted on, mode is still 5, button (1 | 5);
-# packet with mode 5, slot -999, button (2 | 6);
-If any of the painting packets other than the "progress" ones are sent out of order (for example, a start, some slots, then another start; or a left-click in the middle) the painting status will be reset.
-==== Confirm Transaction  ====
 {| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
+ |-
-|-
+ ! Id
-| rowspan="3" | 0x0F
+ ! Key
-| Window ID || Byte || The id of the window that the action occurred in.
+ ! Default
-|-
+ ! Min
-| Action number || Short || Every action that is to be accepted has a unique number. This field corresponds to that number.
+ ! Max
-|-
+ ! Label
-| Accepted || Bool || Whether the action was accepted.
+ |-
-|}
+ | 0
+ | generic.armor
+ | 0.0
+ | 0.0
+ | 30.0
+ | Armor.
+ |-
+ | 1
+ | generic.armor_toughness
+ | 0.0
+ | 0.0
+ | 20.0
+ | Armor Toughness.
+ |-
+ | 2
+ | generic.attack_damage
+ | 2.0
+ | 0.0
+ | 2048.0
+ | Attack Damage.
+ |-
+ | 3
+ | generic.attack_knockback
+ | 0.0
+ | 0.0
+ | 5.0
+ | Attack Knockback.
+ |-
+ | 4
+ | generic.attack_speed
+ | 4.0
+ | 0.0
+ | 1024.0
+ | Attack Speed.
+ |- {{added}}
+ | 5
+ | generic.block_interaction_range
+ | 4.5
+ | 0.0
+ | 64.0
+ | Block Interaction Range.
+ |- {{added}}
+ | 6
+ | generic.entity_interaction_range
+ | 3.0
+ | 0.0
+ | 64.0
+ | Entity Interaction Range.
+ |-
+ | 7
+ | generic.flying_speed
+ | 0.4
+ | 0.0
+ | 1024.0
+ | Flying Speed.
+ |-
+ | 8
+ | generic.follow_range
+ | 32.0
+ | 0.0
+ | 2048.0
+ | Follow Range.
+ |-
+ | 9
+ | horse.jump_strength
+ | 0.7
+ | 0.0
+ | 2.0
+ | Jump Strength.
+ |-
+ | 10
+ | generic.knockback_resistance
+ | 0.0
+ | 0.0
+ | 1.0
+ | Knockback Resistance.
+ |-
+ | 11
+ | generic.luck
+ | 0.0
+ | -1024.0
+ | 1024.0
+ | Luck.
+ |-
+ | 12
+ | generic.max_absorption
+ | 0.0
+ | 0.0
+ | 2048.0
+ | Max Absorption.
+ |-
+ | 13
+ | generic.max_health
+ | 20.0
+ | 1.0
+ | 1024.0
+ | Max Health.
+ |-
+ | 14
+ | generic.movement_speed
+ | 0.7
+ | 0.0
+ | 1024.0
+ | Movement Speed.
+ |- {{added}}
+ | 15
+ | generic.scale
+ | 1.0
+ | 0.0625
+ | 16.0
+ | Scale.
+ |-
+ | 16
+ | zombie.spawn_reinforcements
+ | 0.0
+ | 0.0
+ | 1.0
+ | Spawn Reinforcements Chance.
+ |- {{added}}
+ | 17
+ | generic.step_height
+ | 0.6
+ | 0.0
+ | 10.0
+ | Step Height.
+ |}
-==== Creative Inventory Action ====
+''Modifier Data'' structure:
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan="2" | 0x10
-| Slot || Short || Inventory slot
-|-
-| Clicked item || [[Slot_Data|Slot]] ||
-|}
-==== Enchant Item ====
 {| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
+ |-
-|-
+ ! Field Name
-| rowspan="2" | 0x11
+ ! Field Type
-| Window ID || Byte || The ID sent by [[#0x64|Open Window]]
+ ! Notes
-|-
+ |-
-| Enchantment || Byte || The position of the enchantment on the enchantment table window, starting with 0 as the topmost one.
+ | UUID
-|}
+ | UUID
+ |
+ |-
+ | Amount
+ | Double
+ | May be positive or negative.
+ |-
+ | Operation
+ | Byte
+ | See below.
+ |}
-==== Update Sign ====
+The operation controls how the base value of the modifier is changed.
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan="7" | 0x12
-| X || Int || Block X Coordinate
-|-
-| Y || Short || Block Y Coordinate
-|-
-| Z || Int || Block Z Coordinate
-|-
-| Line 1 || String || First line of text in the sign
-|-
-| Line 2 || String || Second line of text in the sign
-|-
-| Line 3 || String || Third line of text in the sign
-|-
-| Line 4 || String || Fourth line of text in the sign
-|}
-==== Player Abilities ====
+* 0: Add/subtract amount
-{| class="wikitable"
+* 1: Add/subtract amount percent of the current value
-! Packet ID !! Field Name !! Field Type !! Notes
+* 2: Multiply by amount percent
-|-
-| rowspan="3" | 0x13
-| Flags || Byte ||
-|-
-| Flying speed || Float|| previous integer value divided by 250
-|-
-| Walking speed || Float || previous integer value divided by 250
-|}
-==== Tab-Complete ====
+All of the 0's are applied first, and then the 1's, and then the 2's.
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| 0x14
-| Text || String ||
-|}
+==== Entity Effect ====
-==== Client Settings ====
 {| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
+ ! Packet ID
-|-
+ ! State
-| rowspan="6" | 0x15
+ ! Bound To
-| Locale || String || en_GB
+ ! Field Name
-|-
+ ! Field Type
-| View distance || Byte || 0-3 for 'far', 'normal', 'short', 'tiny'.
+ ! Notes
-|-
+ |-
-| Chat flags || Byte || Chat settings. See notes below.
+ | rowspan="7"| 0x72
-|-
+ | rowspan="7"| Play
-| Unused || Bool || Only observed as true
+ | rowspan="7"| Client
-|-
+ | Entity ID
-| Difficulty || Byte || Client-side difficulty from options.txt
+ | VarInt
-|-
+ |
-| Show Cape || Bool || Client-side "show cape" option
+ |-
-|}
+ | Effect ID
+ | VarInt
+ | See {{Minecraft Wiki|Status effect#Effect list|this table}}.
+ |-
+ | Amplifier
+ | Byte
+ | Notchian client displays effect level as Amplifier + 1.
+ |-
+ | Duration
+ | VarInt
+ | Duration in ticks. (-1 for infinite)
+ |-
+ | Flags
+ | Byte
+ | Bit field, see below.
+ |- {{removed}}
+ | Has Factor Data
+ | Boolean
+ | Used in DARKNESS effect
+ |- {{removed}}
+ | Factor Codec
+ | NBT Tag
+ | See below
+ |}
-Chat flags has several values packed into one byte.
+{{Need Info|What exact effect does the blend bit flag have on the client? What happens if it is used on effects besides DARKNESS?}}
-'''Chat Enabled:''' Bits 0-1. 00: Enabled.  01: Commands only.  10: Hidden.
+Within flags:
-'''Colors Enabled:''' Bit 3.  0: Disabled.  1: Enabled.
+* 0x01: Is ambient - was the effect spawned from a beacon?  All beacon-generated effects are ambient.  Ambient effects use a different icon in the HUD (blue border rather than gray).  If all effects on an entity are ambient, the [[Entity_metadata#Living Entity|"Is potion effect ambient" living metadata field]] should be set to true.  Usually should not be enabled.
+* 0x02: Show particles - should all particles from this effect be hidden?  Effects with particles hidden are not included in the calculation of the effect color, and are not rendered on the HUD (but are still rendered within the inventory).  Usually should be enabled.
+* 0x04: Show icon - should the icon be displayed on the client?  Usually should be enabled.
+* {{change||0x08: Blend - should the effect's hard-coded blending be applied?  Currently only used in the DARKNESS effect to apply extra void fog and adjust the gamma value for lighting.}}
-==== Client Status ====
+{{change|Factor Data|}}
-{| class="wikitable"
+{| class="wikitable" {{removed}}
-! Packet ID !! Field Name !! Field Type !! Notes
+ !Name
-|-
+ !Type
-| rowspan=1 | 0x16
+ !style="width: 250px;" colspan="2"| Notes
-| Action ID || Byte || See below
+ |-
-|}
+ | padding_duration
+ | TAG_INT
-Action ID values:
+ |
-{| class="wikitable"
+ |-
-|-
+ | factor_start
-! Action ID !! Name
+ | TAG_FLOAT
-|-
+ |
-| 1 || Perform respawn
+ |-
-|-
+ | factor_target
-| 2 || Request stats
+ | TAG_FLOAT
-|-
+ |
-| 3 || Open inventory achievement
+ |-
-|}
+ | factor_current
+ | TAG_FLOAT
-==== Plugin Message ====
+ |
-{| class="wikitable"
+ |-
-! Packet ID !! Field Name !! Field Type !! Notes
+ | effect_changed_timestamp
-|-
+ | TAG_INT
-| rowspan="3" | 0x17
+ |-
-| Channel || String || Name of the "channel" used to send the data.
+ | factor_previous_frame
-|-
+ | TAG_FLOAT
-| Length || Short || Length of the following byte array
+ |-
-|-
+ | had_effect_last_tick
-| Data || Byte Array || Any data.
+ | TAG_BOOLEAN
-|}
+ |}
-More documentation on this: http://dinnerbone.com/blog/2012/01/13/minecraft-plugin-channels-messaging/
-== Status ==
-The status ping works as follows.
-    C->S : Handshake State=1
-    C->S : Request
-    S->C : Response
-    C->S : Ping
-    S->C : Ping
-=== Clientbound ===
-==== Response ====
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan=1 | 0x00
-| JSON Response || String || https://gist.github.com/thinkofdeath/6927216
-|}
-==== Ping ====
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan=1 | 0x01
-| Time || Long || Should be the same as sent by the client
-|}
 === Serverbound ===
-==== Request ====
+==== Chat Command ====
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan=1 | 0x00 || || ||
-|}
-==== Ping ====
 {| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
+ ! Packet ID
-|-
+ ! State
-| rowspan=1 | 0x01
+ ! Bound To
-| Time || Long ||
+ ! colspan="2"| Field Name
-|}
+ ! colspan="2"| Field Type
+ ! Notes
+ |-
+ | rowspan="8"| 0x04
+ | rowspan="8"| Play
+ | rowspan="8"| Server
+ | colspan="2"| Command
+ | colspan="2"| {{Type|String}} (256)
+ | colspan="2"| The command typed by the client.
+ |- {{removed}}
+ | colspan="2"| Timestamp
+ | colspan="2"| {{Type|Long}}
+ | colspan="2"| The timestamp that the command was executed.
+ |- {{removed}}
+ | colspan="2"| Salt
+ | colspan="2"| {{Type|Long}}
+ | colspan="2"| The salt for the following argument signatures.
+ |- {{removed}}
+ | colspan="2"| Array length
+ | colspan="2"| {{Type|VarInt}}
+ | colspan="2"| Number of entries in the following array. The maximum length in Notchian server is 8.
+ |- {{removed}}
+ | rowspan="2"| Array of argument signatures
+ | Argument name
+ | rowspan="2"| {{Type|Array}} (8)
+ | {{Type|String}} (16)
+ | The name of the argument that is signed by the following signature.
+ |- {{removed}}
+ | Signature
+ | {{Type|Byte Array}} (256)
+ | The signature that verifies the argument. Always 256 bytes and is not length-prefixed.
+ |- {{removed}}
+ | colspan="2"| Message Count
+ | colspan="2"| {{Type|VarInt}}
+ | colspan="2"|
+ |- {{removed}}
+ | colspan="2"| Acknowledged
+ | colspan="2"| {{Type|Fixed BitSet}} (20)
+ | colspan="2"|
+ |}
-== Login ==
-The login process is as follows:
+==== Signed Chat Command ====
-    C->S : Handshake State=2
-    C->S : Login Start
-    S->C : Encryption Key Request
-    C->S : Encryption Key Response
-    (Auth & enable encryption)
-    S->C : Login Success
-For unauthenticated and* localhost connections there is no encryption.
+{| class="wikitable" {{added}}
-In that case Login Start is directly followed by Login Success.
+ ! Packet ID
+ ! State
+ ! Bound To
+ ! colspan="2"| Field Name
+ ! colspan="2"| Field Type
+ ! Notes
+ |-
+ | rowspan="8"| 0x05
+ | rowspan="8"| Play
+ | rowspan="8"| Server
+ | colspan="2"| Command
+ | colspan="2"| String(256)
+ | The command typed by the client.
+ |-
+ | colspan="2"| Timestamp
+ | colspan="2"| Long
+ | The timestamp that the command was executed. Milliseconds since the Unix epoch.
+ |-
+ | colspan="2"| Salt
+ | colspan="2"| Long
+ | The salt for the following argument signatures.
+ |-
+ | colspan="2"| Argument Signature Count
+ | colspan="2"| VarInt
+ | Number of elements in the following array. The maximum length in Notchian server is 8.
+ |-
+ | rowspan="2"| Argument Signatures
+ | Name
+ | rowspan="2"| Array
+ | String(16)
+ | The name of the argument that is signed by the following signature.
+ |-
+ | Signature
+ | ByteArray(256)
+ | The signature that verifies the argument. Always 256 bytes and is not length-prefixed.
+ |-
+ | colspan="2"| Seen Messages Offset
+ | colspan="2"| VarInt
+ |
+ |-
+ | colspan="2"| Seen Messages Acknowledged
+ | colspan="2"| Fixed BitSet(20)
+ |
+ |}
-<nowiki>*</nowiki> It could be that only one of the two conditions is enough for an unencrypted connection.
+==== Cookie Response (play) ====
-=== Clientbound ===
+Response to a [[#Cookie_Request_(play)|Cookie Request (play)]] from the server. The Notchian server only accepts responses of up to 5 kiB in size.
-==== Disconnect ====
+{| class="wikitable" {{added}}
-{| class="wikitable"
+ ! Packet ID
-! Packet ID !! Field Name !! Field Type !! Notes
+ ! State
-|-
+ ! Bound To
-| rowspan=1 | 0x00
+ ! colspan="2"| Field Name
-| JSON Data || String ||
+ ! colspan="2"| Field Type
-|}
+ ! Notes
+ |-
+ | rowspan="4"| 0x11
+ | rowspan="4"| Play
+ | rowspan="4"| Server
+ | colspan="2"| Key
+ | colspan="2"| Identifier
+ | The identifier of the cookie.
+ |-
+ | colspan="2"| Has Payload
+ | colspan="2"| Boolean
+ | The payload is only present if the cookie exists on the client.
+ |-
+ | colspan="2"| Payload Length
+ | colspan="2"| Optional VarInt
+ | Length of the following byte array.
+ |-
+ | colspan="2"| Payload
+ | colspan="2"| Optional Byte Array (5120)
+ | The data of the cookie, if any.
+ |}
-==== Encryption Request ====
+==== Debug Sample Subscription ====
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan=5 | 0x01
-| Server ID || String ||
-|-
-| Length || Short || length of public key
-|-
-| Public Key || Byte array ||
-|-
-| Length || Short || length of verify token
-|-
-| Verify Token || Byte array ||
-|-
-|}
-==== Login Success ====
+{| class="wikitable" {{added}}
-{| class="wikitable"
+ ! Packet ID
-! Packet ID !! Field Name !! Field Type !! Notes
+ ! State
-|-
+ ! Bound To
-| rowspan=2 | 0x02
+ ! Field Name
-| UUID || String ||
+ ! Field Type
-|-
+ ! Notes
-| Username || String ||
+ |-
-|}
+ | 0x13
+ | Play
+ | Server
+ | Sample Type
+ | VarInt Enum
+ | The type of debug sample to subscribe to. Currently always 0 (TICK_TIME).
+ |}
-=== Serverbound ===
+[[Category:Minecraft Modern]]
-==== Login Start  ====
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan=1 | 0x00
-| Name || String ||
-|}
-==== Encryption Response ====
-{| class="wikitable"
-! Packet ID !! Field Name !! Field Type !! Notes
-|-
-| rowspan=4 | 0x01
-| Length || Short || length of public key
-|-
-| Public Key || Byte array ||
-|-
-| Length || Short || length of verify token
-|-
-| Verify Token || Byte array ||
-|-
-|}
-== Plugin Channels ==
-=== MC|RPack ===
-{| class="wikitable"
-! Field Name !! Field Type !! Example !! Notes
-|-
-| Resource pack URL || UTF8 string || http://example.com/pack.zip ||
-|}

Difference between revisions of "Pre-release protocol"

Latest revision as of 22:19, 9 April 2024

Contents

Contents

Data types

Packets

New/modified data types

Entity Metadata

Living Entity

Wolf

Armadillo

Block Actions

Inventories

Plugin Channels

Handshake

Serverbound

Handshake

Status

Clientbound

Serverbound

Login

Clientbound

Encryption Request

Cookie Request (login)

Serverbound

Cookie Response (login)

Configuration

Clientbound

Cookie Request (configuration)

Reset Chat

Registry Data

Store Cookie (configuration)

Transfer (configuration)

Clientbound Known Packs

Serverbound

Cookie Response (configuration)

Serverbound Known Packs

Play

Clientbound

Cookie Request (play)

Debug Sample

Login (play)

Respawn

Store Cookie (play)

Transfer (play)

Update Attributes

Entity Effect

Serverbound

Chat Command

Signed Chat Command

Cookie Response (play)

Debug Sample Subscription

Navigation menu

Search