Difference between revisions of "Pre-release protocol"

From wiki.vg
Jump to navigation Jump to search
(Update for weekly releases: New packet 0xFA, 0x01 login and 0x09 respawn changed)
 
(Updated to 1.21-pre2)
 
Line 1: Line 1:
−
This page documents the changes from the [[Protocol|last stable Minecraft release]] (currently 1.0.1) to the current pre-release (currently 12w01a)
+
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.
  
−
=== Unknown (0xFA) ===
+
== Contents ==
 +
 
 +
<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=3 | 0xFA
+
|-
−
| class="col1 centeralign" | Unknown
+
!colspan="4"| Play clientbound
−
| class="col2 centeralign" | string
+
{{PacketList|0x7A|Clientbound Report Details (play)|rel=added}}
−
| class="col3 centeralign" |  
+
{{PacketList|0x7B|Clientbound Server Links (play)|rel=added}}
−
| class="col4" |
+
|-
−
|- class="row2"
 
−
| class="col1 centeralign" | Length of array
 
−
| class="col2 centeralign" | short
 
−
| class="col3 centeralign" |
 
−
| class="col4" | Length of the following array
 
−
|- class="row3"
 
−
| class="col1 centeralign" | Array
 
−
| class="col2 centeralign" | byte[]
 
−
| class="col3 centeralign" |
 
−
| class="col4" |
 
−
|- class="row4"
 
−
! class="col0" | Total Size:
 
−
| class="col1 rightalign" colspan="4" | 5 bytes + string + array
 
 
|}
 
|}
  
−
== Changed packets ==
+
== Handshake ==
  
−
=== [[Protocol#Login_Request_.280x01.29|Login Request (0x01)]] ===
+
No changes so far.
  
−
New string field added
+
== Status ==
  
−
==== Client to Server ====
+
No changes so far.
  
−
{| class="wikitable"
+
== Login ==
−
|- class="row0"
+
 
−
! class="col0" | Packet ID
+
No changes so far.
−
! class="col1" | Field Name
+
 
−
! class="col2" | Field Type
+
== Configuration ==
−
! class="col3" | Example
+
 
−
! class="col4" | Notes
+
=== Clientbound ===
−
|- class="row1"
+
 
−
| class="col0 centeralign" rowspan="9" | 0x01
+
==== Clientbound Report Details (configuration) ====
−
| class="col1 centeralign" | Protocol Version
+
 
−
| class="col2 centeralign" | int
+
Contains a list of key-value text entries that are included in any crash or disconnection report generated during connection to the server.
−
| class="col3 centeralign" | <code>20</code>
+
 
−
| class="col4" | 1.0.0's protocol version is <code>22</code>
+
{| class="wikitable" {{added}}
−
|- class="row2"
+
! Packet ID
−
| class="col0 centeralign" | Username
+
! State
−
| class="col1 centeralign" | string
+
! Bound To
−
| class="col2 centeralign" | <code>TkTech</code>
+
! colspan="2"| Field Name
−
| class="col3" | The name of the user attempting to login, max length of 16
+
! colspan="2"| Field Type
−
|- class="row3"
+
! Notes
−
| class="col0 centeralign" | Not used
+
|-
−
| class="col1 centeralign" | long
+
| rowspan="3"| 0x0F
−
| class="col2 centeralign" | <code>0</code>
+
| rowspan="3"| Configuration
−
| class="col3" |
+
| rowspan="3"| Client
−
|- class="row4"
+
| colspan="2"| Details Count
−
| class="col0 centeralign" | '''Unknown'''
+
| colspan="2"| {{Type|VarInt}} (32)
−
| class="col1 centeralign" | string
+
| The number of details in the following array.
−
| class="col2 centeralign" |
+
|-
−
| class="col3" |
+
| rowspan="2"| Details
−
|- class="row5"
+
| Title
−
| class="col0 centeralign" | Not used
+
| rowspan="2"| {{Type|Array}}
−
| class="col1 centeralign" | int
+
| {{Type|String}} (128)
−
| class="col2 centeralign" | <code>0</code>
+
|
−
| class="col3" |
+
|-
−
|- class="row6"
+
| Description
−
| class="col0 centeralign" | Not used
+
| {{Type|String}} (4096)
−
| class="col1 centeralign" | byte
+
|
−
| class="col2 centeralign" | <code>0</code>
 
−
| class="col3" |
 
−
|- class="row7"
 
−
| class="col0 centeralign" | Not used
 
−
| class="col1 centeralign" | byte
 
−
| class="col2 centeralign" | <code>0</code>
 
−
| class="col3" |
 
−
|- class="row8"
 
−
| class="col0 centeralign" | Not used
 
−
| class="col1 centeralign" | unsigned byte
 
−
| class="col2 centeralign" | <code>0</code>
 
−
| class="col3" |
 
−
|- class="row9"
 
−
| class="col0 centeralign" | Not used
 
−
| class="col1 centeralign" | unsigned byte
 
−
| class="col2 centeralign" | <code>0</code>
 
−
| class="col3" |
 
−
|- class="row10"
 
−
! class="col0" | Total Size:
 
−
| class="col1 rightalign" colspan="4" | 25 bytes + length of strings
 
 
|}
 
|}
  
−
==== Server to Client ====
+
==== 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"
+
{| 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" | 0x01
+
| rowspan="4"| 0x10
−
| class="col1 centeralign" | Entity ID
+
| rowspan="4"| Configuration
−
| class="col2 centeralign" | int
+
| rowspan="4"| Client
−
| class="col3 centeralign" | <code>1298</code>
+
| colspan="2"| Links Count
−
| class="col4" | The Players Entity ID
+
| colspan="2"| {{Type|VarInt}}
−
|- class="row2"
+
| The number of links in the following array.
−
| class="col0 centeralign" | Not used
+
|-
−
| class="col1 centeralign" | string
+
| rowspan="3"| Links
−
| class="col2 centeralign" | (empty string)
+
| Is built-in
−
| class="col3" | Not used
+
| rowspan="3"| {{Type|Array}}
−
|- class="row3"
+
| {{Type|Boolean}}
−
| class="col0 centeralign" | Map Seed
+
| Determines if the following label is built-in (from enum) or custom (text component).
−
| class="col1 centeralign" | long
+
|-
−
| class="col2 centeralign" | <code>971768181197178410</code>
+
| Label
−
| class="col3" | The server's map seed. Must be sent in respawn packets by the client.
+
| {{Type|VarInt}} {{Type|Enum}} / {{Type|Text Component}}
−
|- class="row4"
+
| See below.
−
| class="col0 centeralign" | '''Unknown'''
+
|-
−
| class="col1 centeralign" | string
+
| URL
−
| class="col2 centeralign" |
+
| {{Type|String}}
−
| class="col3" |  
+
| Valid URL.
−
|- class="row5"
 
−
| class="col0 centeralign" | Server mode
 
−
| class="col1 centeralign" | int
 
−
| class="col2 centeralign" | <code>0</code>
 
−
| class="col3" | 0 for survival, 1 for creative
 
−
|- class="row6"
 
−
| class="col0 centeralign" | Dimension
 
−
| class="col1 centeralign" | byte
 
−
| class="col2 centeralign" | <code>0</code>
 
−
| class="col3" | <code>-1</code>: The Nether, <code>0</code>: The Overworld, <code>1</code>: The End
 
−
|- class="row7"
 
−
| class="col0 centeralign" | Difficulty
 
−
| class="col1 centeralign" | byte
 
−
| class="col2 centeralign" | <code>1</code>
 
−
| class="col3" | <code>0</code> thru <code>3</code> for Peaceful, Easy, Normal, Hard
 
−
|- class="row8"
 
−
| class="col0 centeralign" | World height
 
−
| class="col1 centeralign" | unsigned byte
 
−
| class="col2 centeralign" | <code>128</code>
 
−
| class="col3" | Defaults to <code>128</code>
 
−
|- class="row9"
 
−
| class="col0 centeralign" | Max players
 
−
| class="col1 centeralign" | unsigned byte
 
−
| class="col2 centeralign" | <code>8</code>
 
−
| class="col3" | Used by the client to draw the player list
 
−
|- class="row10"
 
−
! class="col0" | Total Size:
 
−
| class="col1 rightalign" colspan="4" | 25 bytes + length of strings
 
 
|}
 
|}
  
−
=== [[Protocol#Respawn_.280x09.29|Respawn (0x09) ]] ===
 
  
−
New string field added
+
{| 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 ===
 +
 
 +
No changes so far.
  
−
{| class="wikitable"
+
== Play ==
−
|- class="row0"
+
 
−
! class="col0" | Packet ID
+
=== Clientbound ===
−
! class="col1" | Field Name
+
 
−
! class="col2" | Field Type
+
==== Clientbound Report Details (play) ====
−
! class="col3" | Example
+
 
−
! class="col4" | Notes
+
Contains a list of key-value text entries that are included in any crash or disconnection report generated during connection to the server.
−
|- class="row1"
+
 
−
| class="col0 centeralign" rowspan="6" | 0x09
+
{| class="wikitable" {{added}}
−
| class="col1 centeralign" | Dimension
+
! Packet ID
−
| class="col2 centeralign" | byte
+
! State
−
| class="col3 centeralign" | <code>1</code>
+
! Bound To
−
| class="col4" | <code>-1</code>: The Nether, <code>0</code>: The Overworld, <code>1</code>: The End
+
! colspan="2"| Field Name
−
|- class="row2"
+
! colspan="2"| Field Type
−
| class="col1 centeralign" | Difficulty
+
! Notes
−
| class="col2 centeralign" | byte
+
|-
−
| class="col3 centeralign" | <code>1</code>
+
| rowspan="3"| 0x7A
−
| class="col4" | <code>0</code> thru <code>3</code> for Peaceful, Easy, Normal, Hard. <code>1</code> is always sent c->s
+
| rowspan="3"| Configuration
−
|- class="row2"
+
| rowspan="3"| Client
−
| class="col1 centeralign" | Creative mode
+
| colspan="2"| Details Count
−
| class="col2 centeralign" | byte
+
| colspan="2"| {{Type|VarInt}} (32)
−
| class="col3 centeralign" | <code>1</code>
+
| The number of details in the following array.
−
| class="col4" | <code>0</code> for survival, <code>1</code> for creative.
+
|-
−
|- class="row1"
+
| rowspan="2"| Details
−
| class="col1 centeralign" | World height
+
| Title
−
| class="col2 centeralign" | short
+
| rowspan="2"| {{Type|Array}}
−
| class="col3 centeralign" | <code>128</code>
+
| {{Type|String}} (128)
−
| class="col4" | Defaults to <code>128</code>
+
|
−
|- class="row1"
+
|-
−
| class="col1 centeralign" | Map Seed
+
| Description
−
| class="col2 centeralign" | long
+
| {{Type|String}} (4096)
−
| class="col3 centeralign" | <code>-3815848935435401459</code>
+
|
−
|- class="row1"
 
−
| class="col1 centeralign" | '''Unknown'''
 
−
| class="col2 centeralign" | string
 
−
| class="col3 centeralign" |  
 
−
| class="col4" |
 
−
|- class="row2"
 
−
! class="col0" | Total Size:
 
−
| class="col1 rightalign" colspan="4" | 16 bytes + length of string
 
 
|}
 
|}
  
−
== Other changes ==
+
==== Clientbound Server Links (play) ====
  
−
None currently.
+
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).
  
−
== Protocol History ==
+
{| class="wikitable" {{added}}
−
 
+
! Packet ID
−
=== 2012-01-05 ===
+
! State
−
* 12w01a
+
! Bound To
−
* Protocol version is now 23
+
! 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.
 +
|}
  
−
=== 2011-12-15 ===
+
{| class="wikitable" {{added}}
−
* 11w50a
+
! 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
 +
|
 +
|-
 +
|}
  
−
=== 2011-12-08 ===
+
=== Serverbound ===
−
* 11w49a
 
  
−
=== 2011-12-01 ===
+
No changes so far.
−
* 11w48a
 
  
−
=== 2011-11-24 ===
+
[[Category:Minecraft Modern]]
−
* 11w47a
 

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"