Difference between revisions of "Pre-release protocol"

From wiki.vg
Jump to navigation Jump to search
(Rough draft of the new configuration packets)
(Updated to 1.21-pre2)
 
(71 intermediate revisions by 7 users not shown)
Line 1: Line 1:
−
This page documents the changes from the [[Protocol|last stable Minecraft release]] (currently [[Protocol version numbers|1.20.1, protocol 763]]) to the current pre-release (currently [[Protocol version numbers|23w31a, protocol {{Snapshot PVN|1073741968}}]]). 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|1.20.6, protocol 766]]) to the current pre-release (currently [[Protocol version numbers|1.21-pre2, protocol {{Snapshot PVN|1073742024}}]]). 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.
 
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.
Line 9: Line 9:
 
=== Data types ===
 
=== Data types ===
  
−
No changes so far.
+
No changes documented so far.
  
 
=== Packets ===
 
=== Packets ===
  
−
=== Packets ===
 
 
{| class="wikitable"
 
{| class="wikitable"
 
  ! ID
 
  ! ID
Line 19: Line 18:
 
  !colspan="2"| Documentation
 
  !colspan="2"| Documentation
 
  |-
 
  |-
−
!colspan="4"| Configuration clientbound
+
!colspan="4"| Configuration clientbound
−
{{PacketList|0x00|Plugin Message (configuration)|rel=added}}
+
{{PacketList|0x0F|Clientbound Report Details (configuration)|rel=added}}
−
{{PacketList|0x01|Disconnect (configuration)|rel=added}}
+
{{PacketList|0x10|Clientbound Server Links (configuration)|rel=added}}
−
{{PacketList|0x02|Finish Configuration|rel=added}}
+
|-
−
{{PacketList|0x03|Keep Alive (configuration)|rel=added}}
+
!colspan="4"| Play clientbound
−
{{PacketList|0x04|Ping (configuration)|rel=added}}
+
{{PacketList|0x7A|Clientbound Report Details (play)|rel=added}}
−
{{PacketList|0x05|Registry Data|rel=added}}
+
{{PacketList|0x7B|Clientbound Server Links (play)|rel=added}}
−
{{PacketList|0x06|Resource Pack (configuration)|rel=added}}
+
|-
−
{{PacketList|0x07|Feature Flags|rel=added}}
 
−
{{PacketList|0x08|Update Tags|rel=added}}
 
−
|-
 
−
!colspan="4"| Configuration serverbound
 
−
{{PacketList|0x00|Plugin Message (configuration)|rel=added}}
 
−
{{PacketList|0x01|Finish Configuration|rel=added}}
 
−
{{PacketList|0x02|Keep Alive (configuration)|rel=added}}
 
−
{{PacketList|0x03|Pong (configuration)|rel=added}}
 
−
{{PacketList|0x04|Resource Pack|rel=added}}
 
 
|}
 
|}
  
−
== New/modified data types ==
+
== Handshake ==
−
 
 
−
No changes so far.
 
−
 
 
−
== Entity Metadata ==
 
−
 
 
−
No changes so far.
 
−
 
 
−
=== Entity ===
 
−
 
 
−
No changes so far.
 
−
 
 
−
== Block Actions ==
 
−
 
 
−
No changes so far.
 
−
 
 
−
== Inventories ==
 
−
 
 
−
No changes so far.
 
−
 
 
−
== Plugin Channels ==
 
−
 
 
−
No changes so far.
 
−
 
 
−
== Play ==
 
−
 
 
−
=== Clientbound ===
 
−
 
 
−
No changes so far.
 
−
 
 
−
=== Serverbound ===
 
  
 
No changes so far.
 
No changes so far.
  
 
== Status ==
 
== Status ==
−
 
−
=== Clientbound ===
 
−
 
−
No changes so far.
 
−
 
−
=== Serverbound ===
 
  
 
No changes so far.
 
No changes so far.
  
 
== Login ==
 
== Login ==
−
 
−
=== Clientbound ===
 
−
 
−
No changes so far.
 
−
 
−
=== Serverbound ===
 
  
 
No changes so far.
 
No changes so far.
Line 96: Line 44:
 
=== Clientbound ===
 
=== Clientbound ===
  
−
==== Plugin Message (configuration) ====
+
==== Clientbound Report Details (configuration) ====
−
 
 
−
{{Main|Plugin channels}}
 
−
 
 
−
Mods and plugins can use this to send their data. Minecraft itself uses the <code>minecraft:payload</code> channel to send many types of payloads, which are documented [[Plugin_channels|here]].
 
−
 
 
−
More documentation on this: [https://dinnerbone.com/blog/2012/01/13/minecraft-plugin-channels-messaging/ https://dinnerbone.com/blog/2012/01/13/minecraft-plugin-channels-messaging/]
 
  
−
Note that the length of Data is known only from the packet length, since the packet has no length field of any kind.
+
Contains a list of key-value text entries that are included in any crash or disconnection report generated during connection to the server.
  
−
{| class="wikitable"
+
{| class="wikitable" {{added}}
 
  ! Packet ID
 
  ! Packet ID
 
  ! State
 
  ! State
 
  ! Bound To
 
  ! Bound To
−
  ! Field Name
+
  ! colspan="2"| Field Name
−
  ! Field Type
+
  ! colspan="2"| Field Type
 
  ! Notes
 
  ! Notes
 
  |-
 
  |-
−
  | rowspan="2"| 0x00
+
  | rowspan="3"| 0x0F
−
  | rowspan="2"| Configuration  
+
  | rowspan="3"| Configuration
−
  | rowspan="2"| Client
+
  | rowspan="3"| Client
−
  | Channel
+
  | colspan="2"| Details Count
−
| Identifier
+
  | colspan="2"| {{Type|VarInt}} (32)
−
| Name of the [[plugin channel]] used to send the data.
+
| The number of details in the following array.
−
|-
 
−
| Payload
 
−
| Byte Array (1048576)
 
−
| Any data, depending on the channel. <code>minecraft:payload</code> payloads are documented [[plugin channel|here]]. The length of this array must be inferred from the packet length.
 
−
|}
 
−
 
 
−
In Notchian client, the maximum data length is 1048576 bytes.
 
−
 
 
−
==== Disconnect (configuration) ====
 
−
 
 
−
{| class="wikitable"
 
−
! Packet ID
 
−
! State
 
−
! Bound To
 
−
! Field Name
 
−
! Field Type
 
−
! Notes
 
−
|-
 
−
| 0x01
 
−
| Configuration
 
−
| Client
 
−
| Reason
 
−
| [[Chat]]
 
−
| The reason why the player was disconnected.
 
−
|}
 
−
 
 
−
==== Finish Configuration ====
 
−
 
 
−
Sent by the server to notify the client that all the configuration has finish. The client answers with its own [[#Finish_Configuration_2|Finish Configuration]] whenever it is ready to continue.
 
−
 
 
−
{| class="wikitable"
 
−
! Packet ID
 
−
! State
 
−
! Bound To
 
−
! Field Name
 
−
! Field Type
 
−
! Notes
 
−
|-
 
−
| rowspan="1"| 0x02
 
−
| rowspan="1"| Configuration
 
−
| rowspan="1"| Client
 
−
  | colspan="3"| ''no fields''
 
−
|}
 
−
 
 
−
==== Keep Alive (configuration) ====
 
−
 
 
−
The server will frequently send out a keep-alive, each containing a random ID. The client must respond with the same payload (see [[#Keep Alive (configuration) 2|serverbound Keep Alive]]). If the client does not respond to them for over 30 seconds, the server kicks the client. Vice versa, if the server does not send any keep-alives for 20 seconds, the client will disconnect and yields a "Timed out" exception.
 
−
 
 
−
The Notchian server uses a system-dependent time in milliseconds to generate the keep alive ID value.
 
−
 
 
−
{| class="wikitable"
 
−
! Packet ID
 
−
! State
 
−
! Bound To
 
−
! Field Name
 
−
! Field Type
 
−
! Notes
 
 
  |-
 
  |-
−
  | 0x03
+
  | rowspan="2"| Details
−
  | Configuration
+
  | Title
−
  | Client
+
  | rowspan="2"| {{Type|Array}}
−
  | Keep Alive ID
+
  | {{Type|String}} (128)
−
| Long
 
 
  |
 
  |
−
|}
 
−
 
−
==== Ping (configuration) ====
 
−
 
−
Packet is not used by the Notchian server. When sent to the client, client responds with a [[#Pong (configuration)|Pong]] packet with the same id.
 
−
 
−
{| class="wikitable"
 
−
! Packet ID
 
−
! State
 
−
! Bound To
 
−
! Field Name
 
−
! Field Type
 
−
! Notes
 
 
  |-
 
  |-
−
  | 0x04
+
  | Description
−
  | Configuration
+
  | {{Type|String}} (4096)
−
| Client
 
−
| ID
 
−
| Int
 
 
  |
 
  |
−
|}
+
|}
  
−
==== Registry Data ====
+
==== Clientbound Server Links (configuration) ====
  
−
Represents certain registries that are sent from the server and are applied on the client.
+
This packet contains a list of links that the Notchian client will display in the menu available from the pause menu. Link labels can be built-in or custom (i.e., any text).
  
−
{| class="wikitable"
+
{| class="wikitable" {{added}}
 
  ! Packet ID
 
  ! Packet ID
 
  ! State
 
  ! State
 
  ! Bound To
 
  ! Bound To
−
  ! Field Name
+
  ! colspan="2"| Field Name
−
  ! Field Type
+
  ! colspan="2"| Field Type
 
  ! Notes
 
  ! Notes
 
  |-
 
  |-
−
  | rowspan="1"| 0x05
+
  | rowspan="4"| 0x10
−
  | rowspan="1"| Configuration
+
  | rowspan="4"| Configuration
−
  | rowspan="1"| Client
+
  | rowspan="4"| Client
−
  | Registry Codec
+
  | colspan="2"| Links Count
−
  | [[NBT|NBT Tag Compound]]
+
  | colspan="2"| {{Type|VarInt}}
−
| Information included below.
+
  | The number of links in the following array.
−
  |}
 
−
 
 
−
 
 
−
The '''Registry Codec''' NBT Tag Compound ([https://gist.github.com/rj00a/f2970a8ce4d09477ec8f16003b9dce86 Default value in JSON as of 1.19], [https://gist.github.com/nikes/aff59b758a807858da131a1881525b14 1.19.2], [https://pastebin.com/guryvw56 1.20.1]) includes three registries: "minecraft:dimension_type", "minecraft:worldgen/biome", and "minecraft:chat_type".
 
−
 
 
−
{| class="wikitable"
 
−
!Name
 
−
!Type
 
−
!style="width: 250px;" colspan="2"| Notes
 
 
  |-
 
  |-
−
  | minecraft:dimension_type
+
  | rowspan="3"| Links
−
  | TAG_Compound
+
| Is built-in
−
  | The dimension type registry (see below).
+
  | rowspan="3"| {{Type|Array}}
 +
  | {{Type|Boolean}}
 +
| Determines if the following label is built-in (from enum) or custom (text component).
 
  |-
 
  |-
−
  | minecraft:worldgen/biome
+
  | Label
−
  | TAG_Compound
+
  | {{Type|VarInt}} {{Type|Enum}} / {{Type|Text Component}}
−
  | The biome registry (see below).
+
  | See below.
 
  |-
 
  |-
−
  | minecraft:chat_type
+
  | URL
−
  | TAG_Compound
+
  | {{Type|String}}
−
  | The chat type registry (see below).
+
  | Valid URL.
−
|}
+
|}
  
−
Dimension type registry:
 
  
−
{| class="wikitable"
+
{| class="wikitable" {{added}}
−
!Name
+
  ! ID
−
!Type
 
−
!style="width: 250px;" colspan="2"| Notes
 
−
|-
 
−
| type
 
−
| TAG_String
 
−
| The name of the registry. Always "minecraft:dimension_type".
 
−
|-
 
−
| value
 
−
| TAG_List
 
−
| List of dimension types registry entries (see below).
 
−
|}
 
−
 
 
−
Dimension type registry entry:
 
−
 
 
−
{| class="wikitable"
 
−
  !Name
 
−
!Type
 
−
!style="width: 250px;" colspan="2"| Notes
 
−
|-
 
−
| name
 
−
| TAG_String
 
−
| The name of the dimension type (for example, "minecraft:overworld").
 
−
|-
 
−
| id
 
−
| TAG_Int
 
−
| The protocol ID of the dimension (matches the index of the element in the registry list).
 
−
|-
 
−
| element
 
−
| TAG_Compound
 
−
| The dimension type (see below).
 
−
|}
 
−
 
 
−
Dimension type:
 
−
 
 
−
{| class="wikitable"
 
 
  ! Name
 
  ! Name
−
  ! Type
+
  ! Notes
−
!style="width: 250px;" colspan="2"| Meaning
 
−
! Values
 
 
  |-
 
  |-
−
  | piglin_safe
+
  | 0
−
| TAG_Byte
+
  | Bug Report
−
  | colspan="2"| Whether piglins shake and transform to zombified piglins.
+
  | Displayed on connection error screen; included as a comment in the disconnection report.
−
  | 1: true, 0: false.
 
 
  |-
 
  |-
−
  | has_raids
+
  | 1
−
| TAG_Byte
+
  | Community Guidelines
−
  | colspan="2"| Whether players with the Bad Omen effect can cause a raid.
+
  |  
−
  | 1: true, 0: false.
 
 
  |-
 
  |-
−
  | monster_spawn_light_level
+
  | 2
−
| TAG_Int or TAG_Compound
+
  | Support
−
  | Possibly the light level(s) at which monsters can spawn.
+
  |  
−
  | colspan="2"| When TAG_Int, 0 - 15. When TAG_Compound, contains the fields: type (TAG_String), appears to be always "minecraft:uniform", and value (TAG_Compound), which contains the fields: max_inclusive (TAG_Int), min_inclusive (TAG_Int).
 
 
  |-
 
  |-
−
  | monster_spawn_block_light_limit
+
  | 3
−
  | TAG_Int
+
  | Status
−
| colspan="2"|
+
  |  
−
  |
 
 
  |-
 
  |-
−
  | natural
+
  | 4
−
  | TAG_Byte
+
  | Feedback
−
  | colspan="2"| When false, compasses spin randomly. When true, nether portals can spawn zombified piglins.
+
  |  
−
| 1: true, 0: false.
 
 
  |-
 
  |-
−
  | ambient_light
+
  | 5
−
  | TAG_Float
+
  | Community
−
  | colspan="2"| How much light the dimension has.
+
  |  
−
| 0.0 to 1.0.
 
 
  |-
 
  |-
−
  | fixed_time
+
  | 6
−
  | Optional TAG_Long
+
  | Website
−
  | colspan="2"| If set, the time of the day is the specified value.
+
  |  
−
| If set, 0 to 24000.
 
 
  |-
 
  |-
−
  | infiniburn
+
  | 7
−
  | TAG_String
+
  | Forums
−
  | colspan="2"| A resource location defining what block tag to use for infiniburn.
+
  |  
−
| "#" or minecraft resource "#minecraft:...".
 
 
  |-
 
  |-
−
  | respawn_anchor_works
+
  | 8
−
  | TAG_Byte
+
  | News
−
  | colspan="2"| Whether players can charge and use respawn anchors.
+
  |  
−
| 1: true, 0: false.
 
 
  |-
 
  |-
−
  | has_skylight
+
  | 9
−
  | TAG_Byte
+
  | Announcements
−
  | colspan="2"| Whether the dimension has skylight access or not.
+
  |  
−
| 1: true, 0: false.
 
 
  |-
 
  |-
−
| bed_works
 
−
| TAG_Byte
 
−
| colspan="2"| Whether players can use a bed to sleep.
 
−
| 1: true, 0: false.
 
−
|-
 
−
| effects
 
−
| TAG_String
 
−
| colspan="2"| ?
 
−
| "minecraft:overworld", "minecraft:the_nether", "minecraft:the_end" or something else.
 
−
|-
 
−
| min_y
 
−
| TAG_Int
 
−
| colspan="2"| The minimum Y level.
 
−
| A multiple of 16. Example: -64
 
−
|-
 
−
| height
 
−
| TAG_Int
 
−
| colspan="2"| The maximum height.
 
−
| A multiple of 16. Example: 256
 
−
|-
 
−
| logical_height
 
−
| TAG_Int
 
−
| colspan="2"| The maximum height to which chorus fruits and nether portals can bring players within this dimension. (Must be lower than height)
 
−
| 0-384.
 
−
|-
 
−
| coordinate_scale
 
−
| TAG_Double
 
−
| colspan="2"| The multiplier applied to coordinates when traveling to the dimension.
 
−
| 0.00001 - 30000000.0
 
−
|-
 
−
| ultrawarm
 
−
| TAG_Byte
 
−
| colspan="2"| Whether the dimensions behaves like the nether (water evaporates and sponges dry) or not. Also causes lava to spread thinner.
 
−
| 1: true, 0: false.
 
−
|-
 
−
| has_ceiling
 
−
| TAG_Byte
 
−
| colspan="2"| Whether the dimension has a bedrock ceiling or not. When true, causes lava to spread faster.
 
−
| 1: true, 0: false.
 
 
  |}
 
  |}
  
−
Biome registry:
+
=== Serverbound ===
  
−
{| class="wikitable"
+
No changes so far.
−
!Name
 
−
!Type
 
−
!style="width: 250px;" colspan="2"| Notes
 
−
|-
 
−
| type
 
−
| TAG_String
 
−
| The name of the registry. Always "minecraft:worldgen/biome".
 
−
|-
 
−
| value
 
−
| TAG_List
 
−
| List of biome registry entries (see below).
 
−
|}
 
  
−
Biome registry entry:
+
== Play ==
  
−
{| class="wikitable"
+
=== Clientbound ===
−
!Name
 
−
!Type
 
−
!style="width: 250px;" colspan="2"| Notes
 
−
|-
 
−
| name
 
−
| TAG_String
 
−
| The name of the biome (for example, "minecraft:ocean").
 
−
|-
 
−
| id
 
−
| TAG_Int
 
−
| The protocol ID of the biome (matches the index of the element in the registry list).
 
−
|-
 
−
| element
 
−
| TAG_Compound
 
−
| The biome properties (see below).
 
−
|}
 
  
−
Biome properties:
+
==== Clientbound Report Details (play) ====
  
−
{| class="wikitable"
+
Contains a list of key-value text entries that are included in any crash or disconnection report generated during connection to the server.
−
! colspan="3"|Name
 
−
! colspan="2"|Type
 
−
!style="width: 250px;" colspan="2"| Meaning
 
−
! colspan="2"|Values
 
−
|-
 
−
| colspan="3"|has_precipitation
 
−
| colspan="2"|TAG_Byte
 
−
| colspan="2"| Determines whether or not the biome has precipitation.
 
−
| colspan="2"| 1: true, 0: false.
 
−
|-
 
−
| colspan="3"| depth
 
−
| colspan="2"| Optional TAG_Float
 
−
| colspan="2"| The depth factor of the biome.
 
−
| colspan="2"| The default values vary between 1.5 and -1.8.
 
−
|-
 
−
| colspan="3"| temperature
 
−
| colspan="2"| TAG_Float
 
−
| colspan="2"| The temperature factor of the biome.
 
−
| colspan="2"| The default values vary between 2.0 and -0.5.
 
−
|-
 
−
| colspan="3"| scale
 
−
| colspan="2"| Optional TAG_Float
 
−
| colspan="2"| ?
 
−
| colspan="2"| The default values vary between 1.225 and 0.0.
 
−
|-
 
−
| colspan="3"| downfall
 
−
| colspan="2"| TAG_Float
 
−
| colspan="2"| ?
 
−
| colspan="2"| The default values vary between 1.0 and 0.0.
 
−
|-
 
−
| colspan="3"| category
 
−
| colspan="2"| Optional TAG_String
 
−
| colspan="2"| The category of the biome.
 
−
| colspan="2"| Known values are "ocean", "plains", "desert", "forest", "extreme_hills", "taiga", "swamp", "river", "nether", "the_end", "icy", "mushroom", "beach", "jungle", "mesa", "savanna", and "none".
 
−
|-
 
−
| colspan="3"| temperature_modifier
 
−
| colspan="2"| Optional TAG_String
 
−
| colspan="2"| ?
 
−
| colspan="2"| The only known value is "frozen".
 
−
|-
 
−
| rowspan="13"| effects
 
−
| colspan="2"| sky_color
 
−
| rowspan="11"| TAG_Compound
 
−
| TAG_Int
 
−
| colspan="2"| The color of the sky.
 
−
| Example: 8364543, which is #7FA1FF in RGB.
 
−
|-
 
−
| colspan="2"| water_fog_color
 
−
| TAG_Int
 
−
| colspan="2"| Possibly the tint color when swimming.
 
−
| Example: 8364543, which is #7FA1FF in RGB.
 
−
|-
 
−
| colspan="2"| fog_color
 
−
| TAG_Int
 
−
| colspan="2"| Possibly the color of the fog effect when looking past the view distance.
 
−
| Example: 8364543, which is #7FA1FF in RGB.
 
−
|-
 
−
| colspan="2"| water_color
 
−
| TAG_Int
 
−
| colspan="2"| The tint color of the water blocks.
 
−
| Example: 8364543, which is #7FA1FF in RGB.
 
−
|-
 
−
| colspan="2"| foliage_color
 
−
| Optional TAG_Int
 
−
| colspan="2"| The tint color of the grass.
 
−
| Example: 8364543, which is #7FA1FF in RGB.
 
−
|-
 
−
| colspan="2"| grass_color
 
−
| Optional TAG_Int
 
−
| colspan="2"| ?
 
−
| Example: 8364543, which is #7FA1FF in RGB.
 
−
|-
 
−
| colspan="2"| grass_color_modifier
 
−
| Optional TAG_String
 
−
| colspan="2"| Unknown, likely affects foliage color.
 
−
| If set, known values are "swamp" and "dark_forest".
 
−
|-
 
−
| colspan="2"| music
 
−
| Optional TAG_Compound
 
−
| colspan="2"| Music properties for the biome.
 
−
| If present, contains the fields: replace_current_music (TAG_Byte), sound (TAG_String), max_delay (TAG_Int), min_delay (TAG_Int).
 
−
|-
 
−
| colspan="2"| ambient_sound
 
−
| Optional TAG_String
 
−
| colspan="2"| Ambient soundtrack.
 
−
| If present, the ID of a soundtrack. Example: "minecraft:ambient.basalt_deltas.loop".
 
−
|-
 
−
| colspan="2"| additions_sound
 
−
| Optional TAG_Compound
 
−
| colspan="2"| Additional ambient sound that plays randomly.
 
−
| If present, contains the fields: sound (TAG_String), tick_chance (TAG_Double).
 
−
|-
 
−
| colspan="2"| mood_sound
 
−
| Optional TAG_Compound
 
−
| colspan="2"| Additional ambient sound that plays at an interval.
 
−
| If present, contains the fields: sound (TAG_String), tick_delay (TAG_Int), offset (TAG_Double), block_search_extent (TAG_Int).
 
−
|-
 
−
| rowspan="2"| particle
 
−
| probability
 
−
| rowspan="2"| Optional TAG_Compound
 
−
| TAG_FLOAT
 
−
| rowspan="2"| Particles that appear randomly in the biome.
 
−
| Possibly the probability of spawning the particle.
 
−
| ?
 
−
|-
 
−
| options
 
−
| TAG_COMPOUND
 
−
| The properties of the particle to spawn.
 
−
| Contains the field "type" (TAG_String), which identifies the particle type.
 
−
|}
 
−
 
 
−
Chat registry:
 
−
 
 
−
{| class="wikitable"
 
−
!Name
 
−
!Type
 
−
!style="width: 250px;" colspan="2"| Notes
 
−
|-
 
−
| type
 
−
| TAG_String
 
−
| The name of the registry. Always "minecraft:chat_type".
 
−
|-
 
−
| value
 
−
| TAG_List
 
−
| List of chat type registry entries (see below).
 
−
|}
 
  
−
Chat type:
+
{| class="wikitable" {{added}}
−
 
 
−
{| class="wikitable"
 
−
!Name
 
−
!Type
 
−
!style="width: 250px;" colspan="2"| Notes
 
−
|-
 
−
| name
 
−
| TAG_String
 
−
| The type's name (eg "minecraft:chat")
 
−
|-
 
−
| id
 
−
| TAG_Int
 
−
|
 
−
|-
 
−
| elements
 
−
| TAG_Compound
 
−
| "chat" and "narration" TAG_Compound's (see below)
 
−
|}
 
−
 
 
−
Chat type "chat" and "narration":
 
−
 
 
−
{| class="wikitable"
 
−
!Name
 
−
!Type
 
−
!style="width: 250px;" colspan="2"| Notes
 
−
|-
 
−
| translation_key
 
−
| TAG_String
 
−
|
 
−
|-
 
−
| style
 
−
| TAG_Compound
 
−
| Similar to Chat JSON (only present in "chat" TAG_Compound)
 
−
|-
 
−
| parameters
 
−
| TAG_List of TAG_String
 
−
| Values can be "sender", "target" and "content"
 
−
|}
 
−
 
 
−
==== Resource Pack ====
 
−
 
 
−
{| class="wikitable"
 
 
  ! Packet ID
 
  ! Packet ID
 
  ! State
 
  ! State
 
  ! Bound To
 
  ! Bound To
−
  ! Field Name
+
  ! colspan="2"| Field Name
−
  ! Field Type
+
  ! colspan="2"| Field Type
 
  ! Notes
 
  ! Notes
 
  |-
 
  |-
−
  | rowspan="5"| 0x06
+
  | rowspan="3"| 0x7A
−
  | rowspan="5"| Configuration
+
  | rowspan="3"| Configuration
−
  | rowspan="5"| Client
+
  | rowspan="3"| Client
−
  | URL
+
  | colspan="2"| Details Count
−
  | String (32767)
+
  | colspan="2"| {{Type|VarInt}} (32)
−
  | The URL to the resource pack.
+
  | The number of details in the following array.
 
  |-
 
  |-
−
  | Hash
+
  | rowspan="2"| Details
−
  | String (40)
+
| Title
−
  | A 40 character hexadecimal and lowercase [[wikipedia:SHA-1|SHA-1]] hash of the resource pack file.<br />If it's not a 40 character hexadecimal string, the client will not use it for hash verification and likely waste bandwidth — but it will still treat it as a unique id
+
  | rowspan="2"| {{Type|Array}}
 +
| {{Type|String}} (128)
 +
  |
 
  |-
 
  |-
−
  | Forced
+
  | Description
−
  | Boolean
+
  | {{Type|String}} (4096)
−
| The notchian client will be forced to use the resource pack from the server. If they decline they will be kicked from the server.
 
−
|-
 
−
| Has Prompt Message
 
−
| Boolean
 
−
| <code>true</code> If the next field will be sent <code>false</code> otherwise. When <code>false</code>, this is the end of the packet
 
−
|-
 
−
| Prompt Message
 
−
| Optional [[Chat]]
 
−
| This is shown in the prompt making the client accept or decline the resource pack.
 
−
|}
 
−
 
 
−
==== Feature Flags ====
 
−
 
 
−
Used to enable and disable features, generally experimental ones, on the client.
 
−
 
 
−
{| class="wikitable"
 
−
! Packet ID
 
−
! State
 
−
! Bound To
 
−
! Field Name
 
−
! Field Type
 
−
! Notes
 
−
|-
 
−
| rowspan="2"| 0x07
 
−
| rowspan="2"| Configuration
 
−
| rowspan="2"| Client
 
−
| Total Features
 
−
| VarInt
 
−
| Number of features that appear in the array below.
 
−
|-
 
−
| Feature Flags
 
−
| Identifier Array
 
 
  |
 
  |
−
|}
+
|}
−
 
 
−
As of 23w31a, the following feature flags are available:
 
  
−
* minecraft:vanilla - enables vanilla features</li>
+
==== Clientbound Server Links (play) ====
−
* minecraft:bundle - enables support for the bundle</li>
 
−
* minecraft:trade_rebalance - enables support for the rebalanced villager trades</li>
 
  
−
==== Update Tags ====
+
This packet contains a list of links that the Notchian client will display in the menu available from the pause menu. Link labels can be built-in or custom (i.e., any text).
  
−
{| class="wikitable"
+
{| class="wikitable" {{added}}
 
  ! Packet ID
 
  ! Packet ID
 
  ! State
 
  ! State
Line 662: Line 206:
 
  ! Notes
 
  ! Notes
 
  |-
 
  |-
−
  | rowspan="3"| 0x08
+
  | rowspan="4"| 0x7B
−
  | rowspan="3"| Configuration
+
  | rowspan="4"| Configuration
−
  | rowspan="3"| Client
+
  | rowspan="4"| Client
−
  | colspan="2"| Length of the array
+
  | colspan="2"| Links Count
−
  | colspan="2"| VarInt
+
| colspan="2"| {{Type|VarInt}}
−
  |
+
| The number of links in the following array.
 +
  |-
 +
| rowspan="3"| Links
 +
| Is built-in
 +
| rowspan="3"| {{Type|Array}}
 +
| {{Type|Boolean}}
 +
  | Determines if the following label is built-in (from enum) or custom (text component).
 
  |-
 
  |-
−
  | rowspan="2"| Array of tags
+
  | Label
−
  | Tag type
+
  | {{Type|VarInt}} {{Type|Enum}} / {{Type|Text Component}}
−
| rowspan="2"| Array
+
  | See below.
−
| Identifier
 
−
  | Tag identifier (Vanilla required tags are <code>minecraft:block</code>, <code>minecraft:item</code>, <code>minecraft:fluid</code>, <code>minecraft:entity_type</code>, and <code>minecraft:game_event</code>)
 
 
  |-
 
  |-
−
  | Array of Tag
+
  | URL
−
  | (See below)
+
  | {{Type|String}}
−
  |
+
  | Valid URL.
−
|}
+
|}
  
−
Tags look like:
+
{| class="wikitable" {{added}}
−
 
+
  ! ID
−
{| class="wikitable"
+
  ! Name
−
  ! colspan="2"| Field Name
 
−
  ! colspan="2"| Field Type
 
 
  ! Notes
 
  ! Notes
 
  |-
 
  |-
−
  | colspan="2"| Length
+
  | 0
−
  | colspan="2"| VarInt
+
  | Bug Report
−
  | Number of elements in the following array
+
  | Displayed on connection error screen; included as a comment in the disconnection report.
 
  |-
 
  |-
−
  | rowspan="3"| Tags
+
  | 1
−
  | Tag name
+
| Community Guidelines
−
  | rowspan="3"| Array
+
|
−
  | Identifier
+
|-
−
  |
+
| 2
 +
| Support
 +
|  
 +
  |-
 +
  | 3
 +
  | Status
 +
  |  
 
  |-
 
  |-
−
  | Count
+
  | 4
−
  | VarInt
+
  | Feedback
−
  | Number of elements in the following array
+
  |  
 
  |-
 
  |-
−
  | Entries
+
  | 5
−
  | Array of VarInt
+
  | Community
−
  | Numeric ID of the given type (block, item, etc.).
+
  |  
−
|}
 
−
 
 
−
More information on tags is available at: https://minecraft.gamepedia.com/Tag
 
−
 
 
−
And a list of all tags is here: https://minecraft.gamepedia.com/Tag#List_of_tags
 
−
 
 
−
 
 
−
=== Serverbound ===
 
−
 
 
−
==== Plugin Message (configuration) ====
 
−
 
 
−
{{Main|Plugin channels}}
 
−
 
 
−
Mods and plugins can use this to send their data. Minecraft itself uses the <code>minecraft:payload</code> channel to send many types of payloads, which are documented [[Plugin_channels|here]].
 
−
 
 
−
More documentation on this: [https://dinnerbone.com/blog/2012/01/13/minecraft-plugin-channels-messaging/ https://dinnerbone.com/blog/2012/01/13/minecraft-plugin-channels-messaging/]
 
−
 
 
−
Note that the length of Data is known only from the packet length, since the packet has no length field of any kind.
 
−
 
 
−
{| class="wikitable"
 
−
! Packet ID
 
−
! State
 
−
! Bound To
 
−
! Field Name
 
−
! Field Type
 
−
! Notes
 
 
  |-
 
  |-
−
  | rowspan="2"| 0x00
+
  | 6
−
| rowspan="2"| Configuration
+
  | Website
−
| rowspan="2"| Server
+
  |  
−
| Channel
 
−
  | Identifier
 
−
  | Name of the [[plugin channel]] used to send the data.
 
 
  |-
 
  |-
−
  | Payload
+
  | 7
−
  | Byte Array (32767)
+
  | Forums
−
  | Any data, depending on the channel. <code>minecraft:payload</code> payloads are documented [[plugin channel|here]]. The length of this array must be inferred from the packet length.
+
  |  
−
|}
 
−
 
 
−
In Notchian server, the maximum data length is 32767 bytes.
 
−
 
 
−
==== Finish Configuration ====
 
−
 
 
−
Sent by the client to notify the client that all the configuration has finished. It is sent after the server sends its own [[#Finish_Configuration|Finish Configuration]].
 
−
 
 
−
{| class="wikitable"
 
−
! Packet ID
 
−
! State
 
−
! Bound To
 
−
! Field Name
 
−
! Field Type
 
−
! Notes
 
 
  |-
 
  |-
−
  | rowspan="1"| 0x01
+
  | 8
−
| rowspan="1"| Configuration
+
  | News
−
  | rowspan="1"| Server
+
  |  
−
  | colspan="3"| ''no fields''
 
−
|}
 
−
 
 
−
==== Keep Alive (configuration) ====
 
−
 
 
−
The server will frequently send out a keep-alive (see [[#Keep Alive (configuration)|clientbound Keep Alive]]), each containing a random ID. The client must respond with the same packet.
 
−
 
 
−
{| class="wikitable"
 
−
! Packet ID
 
−
! State
 
−
! Bound To
 
−
! Field Name
 
−
! Field Type
 
−
! Notes
 
 
  |-
 
  |-
−
  | 0x02
+
  | 9
−
  | Configuration
+
  | Announcements
−
  | Server
+
  |  
−
| Keep Alive ID
 
−
| Long
 
−
|
 
−
|}
 
−
 
 
−
==== Pong (configuration) ====
 
−
 
 
−
Response to the clientbound packet ([[#Ping (configuration)|Ping]]) with the same id.
 
−
 
 
−
{| class="wikitable"
 
−
! Packet ID
 
−
! State
 
−
! Bound To
 
−
! Field Name
 
−
! Field Type
 
−
! Notes
 
 
  |-
 
  |-
−
| 0x03
 
−
| Configuration
 
−
| Server
 
−
| ID
 
−
| Int
 
−
| id is the same as the ping packet
 
 
  |}
 
  |}
  
−
==== Resource Pack ====
+
=== Serverbound ===
−
 
 
−
{| class="wikitable"
 
−
! Packet ID
 
−
! State
 
−
! Bound To
 
−
! Field Name
 
−
! Field Type
 
−
! Notes
 
−
|-
 
−
| 0x04
 
−
| Configuration
 
−
| Server
 
−
| Result
 
−
| VarInt Enum
 
−
| 0: successfully loaded, 1: declined, 2: failed download, 3: accepted.
 
−
|}
 
  
 +
No changes so far.
  
 
[[Category:Minecraft Modern]]
 
[[Category:Minecraft Modern]]

Latest revision as of 10:40, 8 June 2024

This page documents the changes from the last stable Minecraft release (currently 1.20.6, protocol 766) to the current pre-release (currently 1.21-pre2, protocol Snapshot 200). 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.

Contents

Data types

No changes documented so far.

Packets

ID Packet name Documentation
Configuration clientbound
0x0F Clientbound Report Details (configuration) Pre
0x10 Clientbound Server Links (configuration) Pre
Play clientbound
0x7A Clientbound Report Details (play) Pre
0x7B Clientbound Server Links (play) Pre

Handshake

No changes so far.

Status

No changes so far.

Login

No changes so far.

Configuration

Clientbound

Clientbound Report Details (configuration)

Contains a list of key-value text entries that are included in any crash or disconnection report generated during connection to the server.

Packet ID State Bound To Field Name Field Type Notes
0x0F Configuration Client Details Count VarInt (32) The number of details in the following array.
Details Title Array String (128)
Description String (4096)

Clientbound Server Links (configuration)

This packet contains a list of links that the Notchian client will display in the menu available from the pause menu. Link labels can be built-in or custom (i.e., any text).

Packet ID State Bound To Field Name Field Type Notes
0x10 Configuration Client Links Count VarInt The number of links in the following array.
Links Is built-in Array Boolean Determines if the following label is built-in (from enum) or custom (text component).
Label VarInt Enum / Text Component See below.
URL String Valid URL.


ID Name Notes
0 Bug Report Displayed on connection error screen; included as a comment in the disconnection report.
1 Community Guidelines
2 Support
3 Status
4 Feedback
5 Community
6 Website
7 Forums
8 News
9 Announcements

Serverbound

No changes so far.

Play

Clientbound

Clientbound Report Details (play)

Contains a list of key-value text entries that are included in any crash or disconnection report generated during connection to the server.

Packet ID State Bound To Field Name Field Type Notes
0x7A Configuration Client Details Count VarInt (32) The number of details in the following array.
Details Title Array String (128)
Description String (4096)

Clientbound Server Links (play)

This packet contains a list of links that the Notchian client will display in the menu available from the pause menu. Link labels can be built-in or custom (i.e., any text).

Packet ID State Bound To Field Name Field Type Notes
0x7B Configuration Client Links Count VarInt The number of links in the following array.
Links Is built-in Array Boolean Determines if the following label is built-in (from enum) or custom (text component).
Label VarInt Enum / Text Component See below.
URL String Valid URL.
ID Name Notes
0 Bug Report Displayed on connection error screen; included as a comment in the disconnection report.
1 Community Guidelines
2 Support
3 Status
4 Feedback
5 Community
6 Website
7 Forums
8 News
9 Announcements

Serverbound

No changes so far.

Retrieved from "https://wiki.vg/index.php?title=Pre-release_protocol&oldid=19307"