Difference between revisions of "Pre-release protocol"

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m (→‎Client to Server: Added further info to modified handshake)
(Updated to 1.21-pre2)
 
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−
This page documents the changes from the [[Protocol|last stable Minecraft release]] (currently 1.1) to the current pre-release (currently 12w03a)
+
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.
  
−
== New packets ==
+
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.
  
−
=== Entity Head Look (0x23) ===
+
== Contents ==
  
−
Changes the direction an entity's head is facing.
+
<div style="float:right;">__TOC__</div>
 +
 
 +
=== Data types ===
 +
 
 +
No changes documented so far.
 +
 
 +
=== Packets ===
  
 
{| class="wikitable"
 
{| class="wikitable"
−
|- class="row0"
+
! ID
−
! class="col0" | Packet ID
+
! Packet name
−
! class="col1" | Field Name
+
!colspan="2"| Documentation
−
! class="col2" | Field Type
+
|-
−
! class="col3" | Example
+
!colspan="4"| Configuration clientbound
−
! class="col4" | Notes
+
{{PacketList|0x0F|Clientbound Report Details (configuration)|rel=added}}
−
|- class="row1"
+
{{PacketList|0x10|Clientbound Server Links (configuration)|rel=added}}
−
| class="col0 centeralign" rowspan="2" | 0x23
+
|-
−
| class="col1 centeralign" | Entity ID
+
!colspan="4"| Play clientbound
−
| class="col2 centeralign" | int
+
{{PacketList|0x7A|Clientbound Report Details (play)|rel=added}}
−
| class="col3 centeralign" |
+
{{PacketList|0x7B|Clientbound Server Links (play)|rel=added}}
−
| class="col4" |
+
|-
−
|- class="row2"
 
−
| class="col0 centeralign" | Head Yaw
 
−
| class="col1 centeralign" | byte
 
−
| class="col2 centeralign" |
 
−
| class="col3" | Head yaw in steps of 2π/256
 
−
|- class="row3"
 
−
! class="col0" | Total Size:
 
−
| class="col1 rightalign" colspan="4" | 6 bytes
 
 
|}
 
|}
  
−
=== Update Tile Entity (0x84) ===
+
== Handshake ==
 +
 
 +
No changes so far.
  
−
Essentially a block update on a tile entity.
+
== Status ==
  
−
{| class="wikitable"
+
No changes so far.
−
|- class="row0"
+
 
−
! class="col0" | Packet ID
+
== Login ==
−
! class="col1" | Field Name
+
 
−
! class="col2" | Field Type
+
No changes so far.
−
! class="col3" | Example
+
 
−
! class="col4" | Notes
+
== Configuration ==
−
|- class="row1"
+
 
−
| class="col0 centeralign" rowspan="7" | 0x84
+
=== Clientbound ===
−
| class="col1 centeralign" | X
+
 
−
| class="col2 centeralign" | int
+
==== Clientbound Report Details (configuration) ====
−
| class="col3 centeralign" |  
+
 
−
| class="col4" |  
+
Contains a list of key-value text entries that are included in any crash or disconnection report generated during connection to the server.
−
|- class="row2"
+
 
−
| class="col0 centeralign" | Y
+
{| class="wikitable" {{added}}
−
| class="col1 centeralign" | short
+
! Packet ID
−
| class="col2 centeralign" |  
+
! State
−
| class="col3" |  
+
! Bound To
−
|- class="row3"
+
! colspan="2"| Field Name
−
| class="col0 centeralign" | Z
+
! colspan="2"| Field Type
−
| class="col1 centeralign" | int
+
! Notes
−
| class="col2 centeralign" |  
+
|-
−
| class="col3" |
+
| rowspan="3"| 0x0F
−
|- class="row4"
+
| rowspan="3"| Configuration
−
| class="col0 centeralign" | Action
+
| rowspan="3"| Client
−
| class="col1 centeralign" | byte
+
| colspan="2"| Details Count
−
| class="col2 centeralign" |
+
| colspan="2"| {{Type|VarInt}} (32)
−
| class="col3" | The type of update to perform
+
| The number of details in the following array.
−
|- class="row5"
+
|-
−
| class="col0 centeralign" | Custom 1
+
| rowspan="2"| Details
−
| class="col1 centeralign" | int
+
| Title
−
| class="col2 centeralign" |  
+
| rowspan="2"| {{Type|Array}}
−
| class="col3" | Varies
+
| {{Type|String}} (128)
−
|- class="row6"
+
|
−
| class="col0 centeralign" | Custom 2
+
|-
−
| class="col1 centeralign" | int
+
| Description
−
| class="col2 centeralign" |  
+
| {{Type|String}} (4096)
−
| class="col3" | Varies
+
|
−
|- class="row7"
+
|}
−
| class="col0 centeralign" | Custom 3
+
 
−
| class="col1 centeralign" | int
+
==== Clientbound Server Links (configuration) ====
−
| class="col2 centeralign" |  
+
 
−
| class="col3" | Varies
+
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="row8"
+
 
−
! class="col0" | Total Size:
+
{| class="wikitable" {{added}}
−
| class="col1 rightalign" colspan="4" | 24 bytes
+
! Packet ID
 +
! State
 +
! Bound To
 +
! colspan="2"| Field Name
 +
! 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.
 
|}
 
|}
  
−
==== Actions ====
 
  
−
* '''1''': Set mob displayed inside a mob spawner. Custom 1 contains the [[Entities#Mobs|mob type]]
+
{| 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
 +
|
 +
|-
 +
|}
  
−
== Changed packets ==
+
=== Serverbound ===
  
−
=== [[Protocol#Handshake_.280x02.29|Handshake (0x02)]] ===
+
No changes so far.
  
−
==== Client to Server ====
+
== Play ==
−
The hostname and port were added to this packet, most likely to allow [http://en.wikipedia.org/wiki/Virtual_hosting virtual hosting] .([https://github.com/sadimusi/MVHP/blob/master/mvhp.py sample implementation])
 
−
{| class="wikitable"
 
−
|- class="row0"
 
−
! class="col0" | Packet ID
 
−
! class="col1" | Field Name
 
−
! class="col2" | Field Type
 
−
! class="col3" | Example
 
−
! class="col4" | Notes
 
−
|- class="row1"
 
−
| class="col0 centeralign" | 0x02
 
−
| class="col1 centeralign" | UsernameAndHost
 
−
| class="col2 centeralign" | string
 
−
| class="col3 centeralign" | <code>TkTech;localhost:25565</code>
 
−
| class="col4" | The username of the player attempting to connect, and the host he is connecting to, seperated by a semicolon.
 
−
|- class="row2"
 
−
! class="col0" | Total Size:
 
−
| class="col1 rightalign" colspan="4" | 3 bytes + length of strings
 
−
|}
 
  
−
=== [[Protocol#Mob_Spawn_.280x18.29|Mob Spawn (0x18)]] ===
+
=== Clientbound ===
  
−
New byte field: head yaw
+
==== Clientbound Report Details (play) ====
  
−
This needs confirmation!
+
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}}
−
|- class="row0"
+
! Packet ID
−
! class="col0" | Packet ID
+
! State
−
! class="col1" | Field Name
+
! Bound To
−
! class="col2" | Field Type
+
! colspan="2"| Field Name
−
! class="col3" | Example
+
! colspan="2"| Field Type
−
! class="col4" | Notes
+
! Notes
−
|- class="row1"
+
|-
−
| class="col0 centeralign" rowspan="9" | 0x18
+
| rowspan="3"| 0x7A
−
| class="col1 centeralign" | EID
+
| rowspan="3"| Configuration
−
| class="col2 centeralign" | int
+
| rowspan="3"| Client
−
| class="col3 centeralign" | <code>446</code>
+
| colspan="2"| Details Count
−
| class="col4" | Entity ID
+
| colspan="2"| {{Type|VarInt}} (32)
−
|- class="row2"
+
| The number of details in the following array.
−
| class="col0 centeralign" | Type
+
|-
−
| class="col1 centeralign" | byte
+
| rowspan="2"| Details
−
| class="col2 centeralign" | <code>91</code>
+
| Title
−
| class="col3" | The type of mob. See [[Entities#Mobs]]
+
| rowspan="2"| {{Type|Array}}
−
|- class="row3"
+
| {{Type|String}} (128)
−
| class="col0 centeralign" | X
+
|
−
| class="col1 centeralign" | int
+
|-
−
| class="col2 centeralign" | <code>13366</code>
+
| Description
−
| class="col3" | The Absolute Integer X Position of the object
+
| {{Type|String}} (4096)
−
|- class="row4"
+
|
−
| class="col0 centeralign" | Y
 
−
| class="col1 centeralign" | int
 
−
| class="col2 centeralign" | <code>2176</code>
 
−
| class="col3" | The Absolute Integer Y Position of the object
 
−
|- class="row5"
 
−
| class="col0 centeralign" | Z
 
−
| class="col1 centeralign" | int
 
−
| class="col2 centeralign" | <code>1680</code>
 
−
| class="col3" | The Absolute Integer Z Position of the object
 
−
|- class="row6"
 
−
| class="col0 centeralign" | Yaw
 
−
| class="col1 centeralign" | byte
 
−
| class="col2 centeralign" | <code>-27</code>
 
−
| class="col3" | The yaw in steps of 2π/256
 
−
|- class="row7"
 
−
| class="col0 centeralign" | Pitch
 
−
| class="col1 centeralign" | byte
 
−
| class="col2 centeralign" | <code>0</code>
 
−
| class="col3" | The pitch in steps of 2π/256
 
−
|- class="row8"
 
−
| class="col0 centeralign" | '''Head Yaw'''
 
−
| class="col1 centeralign" | byte
 
−
| class="col2 centeralign" |
 
−
| class="col3" | Head yaw in steps of 2π/256
 
−
|- class="row9"
 
−
| class="col0 centeralign" | Metadata
 
−
| class="col1 centeralign" | Metadata
 
−
| class="col2 centeralign" | <code>127</code>
 
−
| class="col3" | Varies by mob, see [[Entities]]
 
−
|- class="row10"
 
−
! class="col0" | Total Size:
 
−
| class="col1 rightalign" colspan="4" | 21 bytes + Metadata (at least 1)
 
 
|}
 
|}
  
−
== Other changes ==
+
==== Clientbound Server Links (play) ====
  
−
Protocol version is now 25.
+
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
 +
|-
 +
| 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.
 +
|}
  
−
== Protocol History ==
+
{| 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
 +
|
 +
|-
 +
|}
  
−
=== 2012-02-09 ===
+
=== Serverbound ===
−
* 12w06a
 
−
* Protocol version is now 25
 
−
* New packet: 0x84
 
  
−
=== 2012-01-26 ===
+
No changes so far.
−
* 12w04a
 
−
* Protocol version has not been changed
 
−
* Handshake Packet by client (0x02) now contains the server host and port
 
−
* Window Open Packet (0x64): WindowTitle is now longer than accepted by older clients. Contains a keyword such as "container.furnace"
 
  
−
=== 2012-01-19 ===
+
[[Category:Minecraft Modern]]
−
* 12w03a
 
−
* Protocol version is now 24
 
−
* New packet: 0x23
 
−
* MobSpawn: new field, 1 byte inserted before metadata.
 

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"