Difference between revisions of "Pre-release protocol"

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This page documents the changes from the [[Protocol|last stable Minecraft release]] (currently [[Protocol version numbers|1.12, protocol 335]]) to the current pre-release (currently [[Protocol version numbers|17w31a, protocol 336]]). 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 ===
Line 18: Line 18:
 
  !colspan="2"| Documentation
 
  !colspan="2"| Documentation
 
  |-
 
  |-
!colspan="4"| Handshaking serverbound
+
!colspan="4"| Configuration clientbound
{{PacketList|0x00|Handshake}}
+
{{PacketList|0x0F|Clientbound Report Details (configuration)|rel=added}}
 +
{{PacketList|0x10|Clientbound Server Links (configuration)|rel=added}}
 
  |-
 
  |-
!colspan="4"| Play clientbound
+
!colspan="4"| Play clientbound
{{PacketList|0x2B|Unknown (clientbound)|rel=added}}
+
{{PacketList|0x7A|Clientbound Report Details (play)|rel=added}}
{{PacketList|{{Change|0x2B|0x2C}}|Player Abilities (clientbound)|pre=unchanged}}
+
{{PacketList|0x7B|Clientbound Server Links (play)|rel=added}}
{{PacketList|{{Change|0x2C|0x2D}}|Combat Event|pre=unchanged}}
 
{{PacketList|{{Change|0x2D|0x2E}}|Player List Item|pre=unchanged}}
 
{{PacketList|{{Change|0x2E|0x2F}}|Player Position And Look (clientbound)|pre=unchanged}}
 
{{PacketList|{{Change|0x2F|0x30}}|Use Bed|pre=unchanged}}
 
{{PacketList|{{Change|0x30|0x31}}|Unlock Recipes|pre=unchanged}}
 
{{PacketList|{{Change|0x31|0x32}}|Destroy Entities|pre=unchanged}}
 
{{PacketList|{{Change|0x32|0x33}}|Remove Entity Effect|pre=unchanged}}
 
{{PacketList|{{Change|0x33|0x34}}|Resource Pack Send|pre=unchanged}}
 
{{PacketList|{{Change|0x34|0x35}}|Respawn|pre=unchanged}}
 
{{PacketList|{{Change|0x35|0x36}}|Entity Head Look|pre=unchanged}}
 
{{PacketList|{{Change|0x36|0x37}}|Select Advancement Tab|pre=unchanged}}
 
{{PacketList|{{Change|0x37|0x38}}|World Border|pre=unchanged}}
 
{{PacketList|{{Change|0x38|0x39}}|Camera|pre=unchanged}}
 
{{PacketList|{{Change|0x39|0x3A}}|Held Item Change (clientbound)|pre=unchanged}}
 
{{PacketList|{{Change|0x3A|0x3B}}|Display Scoreboard|pre=unchanged}}
 
{{PacketList|{{Change|0x3B|0x3C}}|Entity Metadata|pre=unchanged}}
 
{{PacketList|{{Change|0x3C|0x3D}}|Attach Entity|pre=unchanged}}
 
{{PacketList|{{Change|0x3D|0x3E}}|Entity Velocity|pre=unchanged}}
 
{{PacketList|{{Change|0x3E|0x3F}}|Entity Equipment|pre=unchanged}}
 
{{PacketList|{{Change|0x3F|0x40}}|Set Experience|pre=unchanged}}
 
{{PacketList|{{Change|0x40|0x41}}|Update Health|pre=unchanged}}
 
{{PacketList|{{Change|0x41|0x42}}|Scoreboard Objective|pre=unchanged}}
 
{{PacketList|{{Change|0x42|0x43}}|Set Passengers|pre=unchanged}}
 
{{PacketList|{{Change|0x43|0x44}}|Teams|pre=unchanged}}
 
{{PacketList|{{Change|0x44|0x45}}|Update Score|pre=unchanged}}
 
{{PacketList|{{Change|0x45|0x46}}|Spawn Position|pre=unchanged}}
 
{{PacketList|{{Change|0x46|0x47}}|Time Update|pre=unchanged}}
 
{{PacketList|{{Change|0x47|0x48}}|Title|pre=unchanged}}
 
{{PacketList|{{Change|0x48|0x49}}|Sound Effect|pre=unchanged}}
 
{{PacketList|{{Change|0x49|0x4A}}|Player List Header And Footer|pre=unchanged}}
 
{{PacketList|{{Change|0x4A|0x4B}}|Collect Item|pre=unchanged}}
 
{{PacketList|{{Change|0x4B|0x4C}}|Entity Teleport|pre=unchanged}}
 
{{PacketList|{{Change|0x4C|0x4D}}|Advancements|pre=unchanged}}
 
{{PacketList|{{Change|0x4D|0x4E}}|Entity Properties|pre=unchanged}}
 
{{PacketList|{{Change|0x4E|0x4F}}|Entity Effect|pre=unchanged}}
 
 
  |-
 
  |-
!colspan="4"| Play serverbound
+
|}
{{PacketList|0x01|Prepare Crafting Grid|pre=removed}}
 
{{PacketList|{{Change|0x02|0x01}}|Tab-Complete (serverbound)|pre=unchanged}}
 
{{PacketList|{{Change|0x03|0x02}}|Chat Message (serverbound)|pre=unchanged}}
 
{{PacketList|{{Change|0x04|0x03}}|Client Status|pre=unchanged}}
 
{{PacketList|{{Change|0x05|0x04}}|Client Settings|pre=unchanged}}
 
{{PacketList|{{Change|0x06|0x05}}|Confirm Transaction (serverbound)|pre=unchanged}}
 
{{PacketList|{{Change|0x07|0x06}}|Enchant Item|pre=unchanged}}
 
{{PacketList|{{Change|0x08|0x07}}|Click Window|pre=unchanged}}
 
{{PacketList|{{Change|0x09|0x08}}|Close Window (serverbound)|pre=unchanged}}
 
{{PacketList|{{Change|0x0A|0x09}}|Plugin Message (serverbound)|pre=unchanged}}
 
{{PacketList|{{Change|0x0B|0x0A}}|Use Entity|pre=unchanged}}
 
{{PacketList|{{Change|0x0C|0x0B}}|Keep Alive (serverbound)|pre=unchanged}}
 
{{PacketList|{{Change|0x0D|0x0C}}|Player|pre=unchanged}}
 
{{PacketList|{{Change|0x0E|0x0D}}|Player Position|pre=unchanged}}
 
{{PacketList|{{Change|0x0F|0x0E}}|Player Position And Look (serverbound)|pre=unchanged}}
 
{{PacketList|{{Change|0x10|0x0F}}|Player Look|pre=unchanged}}
 
{{PacketList|{{Change|0x11|0x10}}|Vehicle Move (serverbound)|pre=unchanged}}
 
{{PacketList|{{Change|0x12|0x11}}|Steer Boat|pre=unchanged}}
 
{{PacketList|0x12|Unknown (serverbound)|rel=added}}
 
|}
 
  
== New/modified data types ==
+
== Handshake ==
  
 
No changes so far.
 
No changes so far.
  
== Block Actions ==
+
== Status ==
 +
 
 +
No changes so far.
  
No changes so far.
+
== Login ==
  
[[Category:Minecraft Modern]]
+
No changes so far.
  
== Play ==
+
== Configuration ==
  
 
=== Clientbound ===
 
=== Clientbound ===
  
==== Unknown (clientbound) ====
+
==== Clientbound Report Details (configuration) ====
  
Related to the recipe book.
+
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"| 0x2B
+
  | rowspan="3"| 0x0F
  |rowspan="2"| Play
+
| rowspan="3"| Configuration
  |rowspan="2"| Client
+
| rowspan="3"| Client
  | Window ID
+
| colspan="2"| Details Count
  | Byte
+
  | colspan="2"| {{Type|VarInt}} (32)
 +
| The number of details in the following array.
 +
|-
 +
  | rowspan="2"| Details
 +
| Title
 +
  | rowspan="2"| {{Type|Array}}
 +
  | {{Type|String}} (128)
 
  |
 
  |
 
  |-
 
  |-
  | Recipe
+
  | Description
  | VarInt
+
  | {{Type|String}} (4096)
  | A recipe ID
+
  |
|}
+
|}
 
 
=== Serverbound ===
 
  
==== Unknown (serverbound) ====
+
==== Clientbound Server Links (configuration) ====
  
Likely related to recipe book as a replacement for [[Protocol#Prepare Crafting Grid|Prepare Crafting Grid]].
+
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
 +
|-
 +
| rowspan="4"| 0x10
 +
| rowspan="4"| Configuration
 +
| rowspan="4"| Client
 +
| colspan="2"| Links Count
 +
| 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).
 +
|-
 +
| Label
 +
| {{Type|VarInt}} {{Type|Enum}} / {{Type|Text Component}}
 +
| See below.
 +
|-
 +
| URL
 +
| {{Type|String}}
 +
| Valid URL.
 +
|}
 +
 
 +
 
 +
{| class="wikitable" {{added}}
 +
! ID
 +
! Name
 
  ! Notes
 
  ! Notes
 
  |-
 
  |-
  |rowspan="3"| 0x12
+
  | 0
  |rowspan="3"| Play
+
| Bug Report
  |rowspan="3"| Server
+
| Displayed on connection error screen; included as a comment in the disconnection report.
  | Window ID
+
|-
  | Byte
+
| 1
  |
+
| Community Guidelines
 +
|
 +
|-
 +
| 2
 +
| Support
 +
|
 +
|-
 +
| 3
 +
| Status
 +
|
 +
|-
 +
| 4
 +
| Feedback
 +
|
 +
|-
 +
| 5
 +
  | Community
 +
|
 +
|-
 +
| 6
 +
| Website
 +
|
 +
|-
 +
| 7
 +
| Forums
 +
  |  
 +
|-
 +
  | 8
 +
  | News
 +
  |  
 
  |-
 
  |-
  | Recipe
+
  | 9
  | VarInt
+
  | Announcements
  | A recipe ID
+
  |  
 
  |-
 
  |-
| Make all
 
| Boolean
 
| Affects the amount of items processed; true if shift is down when clicked
 
 
  |}
 
  |}
  
== Handshaking ==
+
=== Serverbound ===
 
 
=== Clientbound ===
 
  
 
No changes so far.
 
No changes so far.
  
=== Serverbound ===
+
== Play ==
  
<!-- Version number will change meaning that this needs to be uncommented -->
+
=== Clientbound ===
  
==== Handshake ====
+
==== Clientbound Report Details (play) ====
  
This causes the server to switch into the target state.
+
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="4"| 0x00
+
  | rowspan="3"| 0x7A
  |rowspan="4"| Handshaking
+
  | rowspan="3"| Configuration
  |rowspan="4"| Server
+
  | rowspan="3"| Client
  | Protocol Version
+
  | colspan="2"| Details Count
  | VarInt
+
  | colspan="2"| {{Type|VarInt}} (32)
| See [[protocol version numbers]] (currently {{change|335|336}})
+
| The number of details in the following array.
 
  |-
 
  |-
  | Server Address
+
  | rowspan="2"| Details
  | String
+
  | Title
  | Hostname or IP, e.g. localhost or 127.0.0.1, that was used to connect.  The Notchian server does not use this information.
+
  | rowspan="2"| {{Type|Array}}
|-
+
  | {{Type|String}} (128)
  | Server Port
+
  |
| Unsigned Short
 
  | Default is 25565.  The Notchian server does not use this information.
 
 
  |-
 
  |-
  | Next State
+
  | Description
  | VarInt Enum
+
  | {{Type|String}} (4096)
  | 1 for [[#Status|status]], 2 for [[#Login|login]]
+
  |
|}
+
|}
 +
 
 +
==== Clientbound Server Links (play) ====
  
== Status ==
+
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).
  
=== Clientbound ===
+
{| class="wikitable" {{added}}
 +
! Packet ID
 +
! State
 +
! Bound To
 +
! colspan="2"| Field Name
 +
! colspan="2"| Field Type
 +
! Notes
 +
|-
 +
| rowspan="4"| 0x7B
 +
| rowspan="4"| Configuration
 +
| rowspan="4"| Client
 +
| colspan="2"| Links Count
 +
| 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).
 +
|-
 +
| Label
 +
| {{Type|VarInt}} {{Type|Enum}} / {{Type|Text Component}}
 +
| See below.
 +
|-
 +
| URL
 +
| {{Type|String}}
 +
| Valid URL.
 +
|}
  
No changes so far.
+
{| class="wikitable" {{added}}
 +
! 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 ===
 
=== Serverbound ===
Line 202: Line 279:
 
No changes so far.
 
No changes so far.
  
== Login ==
+
[[Category:Minecraft Modern]]
 
 
=== Clientbound ===
 
 
 
No changes so far.
 
 
 
=== Serverbound ===
 
 
 
No changes so far.
 

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.