Difference between revisions of "Pre-release protocol"

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(Basic changes (still need to figure out the new packets and what happened to particle))
(Updated to 1.21-pre2)
 
(770 intermediate revisions by 48 users not shown)
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This page documents the changes from the [[Protocol|last stable Minecraft release]] (currently [[Protocol version numbers|1.12.2, protocol 340]]) to the current pre-release (currently [[Protocol version numbers|17w45a, protocol 343]]). 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|0x0E|Tab-Complete (clientbound)|pre=removed}}
+
{{PacketList|0x7A|Clientbound Report Details (play)|rel=added}}
−
{{PacketList|{{change|0x0F|0x0E}}|Chat Message (clientbound)|pre=unchanged}}
+
{{PacketList|0x7B|Clientbound Server Links (play)|rel=added}}
−
{{PacketList|{{change|0x10|0x0F}}|Multi Block Change|pre=unchanged}}
 
−
{{PacketList|0x10|Unknown 0x10|rel=added}}
 
−
{{PacketList|0x19|Named Sound Effect}}
 
−
{{PacketList|0x22|Particle}}
 
−
{{PacketList|0x49|Unknown 0x49|rel=added}}
 
−
{{PacketList|{{change|0x49|0x4A}}|Sound Effect|pre=unchanged}}
 
−
{{PacketList|{{change|0x4A|0x4B}}|Player List Header And Footer|pre=unchanged}}
 
−
{{PacketList|{{change|0x4B|0x4C}}|Collect Item|pre=unchanged}}
 
−
{{PacketList|{{change|0x4C|0x4D}}|Entity Teleport|pre=unchanged}}
 
−
{{PacketList|{{change|0x4D|0x4E}}|Advancements|pre=unchanged}}
 
−
{{PacketList|{{change|0x4E|0x4F}}|Entity Properties|pre=unchanged}}
 
−
{{PacketList|{{change|0x4F|0x50}}|Entity Effect|pre=unchanged}}
 
 
  |-
 
  |-
−
!colspan="4"| Play clientbound
+
|}
−
{{PacketList|0x01|Tab-Complete (serverbound)|pre=removed}}
 
−
{{PacketList|{{change|0x02|0x01}}|Chat Message (serverbound)|pre=unchanged}}
 
−
{{PacketList|{{change|0x03|0x02}}|Client Status|pre=unchanged}}
 
−
{{PacketList|{{change|0x04|0x03}}|Client Settings|pre=unchanged}}
 
−
{{PacketList|{{change|0x05|0x04}}|Confirm Transaction (serverbound)|pre=unchanged}}
 
−
{{PacketList|{{change|0x06|0x05}}|Enchant Item|pre=unchanged}}
 
−
{{PacketList|{{change|0x07|0x06}}|Click Window|pre=unchanged}}
 
−
{{PacketList|{{change|0x08|0x07}}|Close Window (serverbound)|pre=unchanged}}
 
−
{{PacketList|{{change|0x09|0x08}}|Plugin Message (serverbound)|pre=unchanged}}
 
−
{{PacketList|{{change|0x0A|0x09}}|Use Entity|pre=unchanged}}
 
−
{{PacketList|{{change|0x0B|0x0A}}|Keep Alive (serverbound)|pre=unchanged}}
 
−
{{PacketList|{{change|0x0C|0x0B}}|Player|pre=unchanged}}
 
−
{{PacketList|{{change|0x0D|0x0C}}|Player Position|pre=unchanged}}
 
−
{{PacketList|{{change|0x0E|0x0D}}|Player Position And Look (serverbound)|pre=unchanged}}
 
−
{{PacketList|{{change|0x0F|0x0E}}|Player Look|pre=unchanged}}
 
−
{{PacketList|{{change|0x10|0x0F}}|Vehicle Move (serverbound)|pre=unchanged}}
 
−
{{PacketList|{{change|0x11|0x10}}|Steer Boat|pre=unchanged}}
 
−
{{PacketList|{{change|0x12|0x11}}|Craft Recipe Request|pre=unchanged}}
 
−
{{PacketList|{{change|0x13|0x12}}|Player Abilities (serverbound)|pre=unchanged}}
 
−
{{PacketList|{{change|0x14|0x13}}|Player Digging|pre=unchanged}}
 
−
{{PacketList|{{change|0x15|0x14}}|Entity Action|pre=unchanged}}
 
−
{{PacketList|{{change|0x16|0x15}}|Steer Vehicle|pre=unchanged}}
 
−
{{PacketList|{{change|0x17|0x16}}|Crafting Book Data|pre=unchanged}}
 
−
{{PacketList|{{change|0x18|0x17}}|Resource Pack Status|pre=unchanged}}
 
−
{{PacketList|{{change|0x19|0x18}}|Advancement Tab|pre=unchanged}}
 
−
{{PacketList|{{change|0x1A|0x19}}|Held Item Change (serverbound)|pre=unchanged}}
 
−
{{PacketList|{{change|0x1B|0x1A}}|Creative Inventory Action|pre=unchanged}}
 
−
{{PacketList|{{change|0x1C|0x1B}}|Update Sign|pre=unchanged}}
 
−
{{PacketList|{{change|0x1D|0x1C}}|Animation (serverbound)|pre=unchanged}}
 
−
{{PacketList|{{change|0x1E|0x1D}}|Spectate|pre=unchanged}}
 
−
{{PacketList|{{change|0x1F|0x1E}}|Player Block Placement|pre=unchanged}}
 
−
{{PacketList|{{change|0x20|0x1F}}|Use Item|pre=unchanged}}
 
−
|}
 
  
−
== New/modified data types ==
+
== Handshake ==
  
 
No changes so far.
 
No changes so far.
  
−
== Block Actions ==
+
== Status ==
  
−
No changes so far.  
+
No changes so far.
  
−
== Play ==
+
== Login ==
  
−
=== Clientbound ===
+
No changes so far.
  
−
==== Unknown 0x10 ====
+
== Configuration ==
  
−
Unknown, appears to have no data.
+
=== Clientbound ===
  
−
==== Named Sound Effect ====
+
==== Clientbound Report Details (configuration) ====
−
{{See also|#Sound Effect}}
 
  
−
Used to play a sound effect on the client. Custom sounds may be added by resource packs.
+
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="7"| 0x19
+
  | rowspan="3"| 0x0F
−
  |rowspan="7"| Play
+
  | rowspan="3"| Configuration
−
  |rowspan="7"| Client
+
  | rowspan="3"| Client
−
  | Sound Name
+
  | colspan="2"| Details Count
−
  | {{Change|String (256)|Identifier}}
+
  | colspan="2"| {{Type|VarInt}} (32)
−
  | All sound effect names as of 1.12.2 can be seen [http://pokechu22.github.io/Burger/1.12.2.html#sounds here].
+
  | The number of details in the following array.
 
  |-
 
  |-
−
  | Sound Category
+
  | rowspan="2"| Details
−
  | VarInt Enum
+
  | Title
−
  | The category that this sound will be played from ([https://gist.github.com/konwboj/7c0c380d3923443e9d55 current categories])
+
| rowspan="2"| {{Type|Array}}
 +
  | {{Type|String}} (128)
 +
|
 
  |-
 
  |-
−
  | Effect Position X
+
  | Description
−
  | Int
+
  | {{Type|String}} (4096)
−
  | Effect X multiplied by 8 ([[Data types#Fixed-point numbers|fixed-point number]] with only 3 bits dedicated to the fractional part)
+
  |
 +
|}
 +
 
 +
==== 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).
 +
 
 +
{| class="wikitable" {{added}}
 +
! Packet ID
 +
! State
 +
! Bound To
 +
! colspan="2"| Field Name
 +
! colspan="2"| Field Type
 +
! Notes
 
  |-
 
  |-
−
  | Effect Position Y
+
  | rowspan="4"| 0x10
−
  | Int
+
| rowspan="4"| Configuration
−
  | Effect Y multiplied by 8 ([[Data types#Fixed-point numbers|fixed-point number]] with only 3 bits dedicated to the fractional part)
+
| rowspan="4"| Client
 +
  | colspan="2"| Links Count
 +
  | colspan="2"| {{Type|VarInt}}
 +
| The number of links in the following array.
 
  |-
 
  |-
−
  | Effect Position Z
+
  | rowspan="3"| Links
−
  | Int
+
| Is built-in
−
  | Effect Z multiplied by 8 ([[Data types#Fixed-point numbers|fixed-point number]] with only 3 bits dedicated to the fractional part)
+
  | rowspan="3"| {{Type|Array}}
 +
  | {{Type|Boolean}}
 +
| Determines if the following label is built-in (from enum) or custom (text component).
 
  |-
 
  |-
−
  | Volume
+
  | Label
−
  | Float
+
  | {{Type|VarInt}} {{Type|Enum}} / {{Type|Text Component}}
−
  | 1 is 100%, can be more
+
  | See below.
 
  |-
 
  |-
−
  | Pitch
+
  | URL
−
  | Float
+
  | {{Type|String}}
−
  | Float between 0.5 and 2.0 by Notchian clients
+
  | Valid URL.
−
|}
+
|}
  
−
==== Particle ====
 
  
−
Changes unknown.
+
{| class="wikitable" {{added}}
−
 
+
  ! ID
−
==== Unknown 0x49 ====
+
  ! Name
−
 
 
−
{| class="wikitable"
 
−
  ! Packet ID
 
−
  ! State
 
−
! Bound To
 
−
! Field Name
 
−
! Field Type
 
 
  ! Notes
 
  ! Notes
 
  |-
 
  |-
−
  |rowspan="7"| 0x49
+
  | 0
−
  |rowspan="7"| Play
+
| Bug Report
−
  |rowspan="7"| Client
+
| Displayed on connection error screen; included as a comment in the disconnection report.
−
  | Flags
+
|-
−
  | Byte
+
  | 1
−
  | Appears to control whether the following fields are present. 0-3.
+
| Community Guidelines
 +
  |  
 +
|-
 +
  | 2
 +
  | Support
 +
  |  
 +
  |-
 +
| 3
 +
| Status
 +
|
 +
|-
 +
| 4
 +
| Feedback
 +
|
 +
|-
 +
| 5
 +
| Community
 +
|
 +
|-
 +
| 6
 +
| Website
 +
|
 +
|-
 +
| 7
 +
| Forums
 +
|
 +
|-
 +
| 8
 +
| News
 +
|
 
  |-
 
  |-
−
  |
+
  | 9
−
  | Optional VarInt enum
+
  | Announcements
−
  | Only if flags is 3 or 1
+
  |  
 
  |-
 
  |-
−
|
 
−
| Optional Identifier
 
−
| Only if flags is 2 or 3
 
 
  |}
 
  |}
  
Line 167: Line 160:
 
No changes so far.
 
No changes so far.
  
−
== Handshaking ==
+
== Play ==
  
 
=== Clientbound ===
 
=== Clientbound ===
  
−
There are no clientbound packets in the Handshaking state, since the protocol immediately switches to a different state after the client sends the first packet.
+
==== Clientbound Report Details (play) ====
−
 
 
−
=== Serverbound ===
 
−
 
 
−
==== Handshake ====
 
  
−
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|340|343}})
+
| 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]]
+
  |
−
|}
+
|}
  
−
== Status ==
+
==== Clientbound Server Links (play) ====
  
−
=== Clientbound ===
+
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).
  
−
No changes so far.
+
{| 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.
 +
|}
  
−
=== Serverbound ===
+
{| class="wikitable" {{added}}
−
 
+
! ID
−
No changes so far.
+
! Name
−
 
+
! Notes
−
== Login ==
+
|-
−
 
+
| 0
−
=== Clientbound ===
+
| Bug Report
−
 
+
| Displayed on connection error screen; included as a comment in the disconnection report.
−
No changes so far.
+
|-
 +
| 1
 +
| Community Guidelines
 +
|
 +
|-
 +
| 2
 +
| Support
 +
|
 +
|-
 +
| 3
 +
| Status
 +
|
 +
|-
 +
| 4
 +
| Feedback
 +
|
 +
|-
 +
| 5
 +
| Community
 +
|
 +
|-
 +
| 6
 +
| Website
 +
|
 +
|-
 +
| 7
 +
| Forums
 +
|
 +
|-
 +
| 8
 +
| News
 +
|
 +
|-
 +
| 9
 +
| Announcements
 +
|
 +
|-
 +
|}
  
 
=== Serverbound ===
 
=== Serverbound ===
  
 
No changes so far.
 
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"