Difference between revisions of "Pre-release protocol"

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(Updated to 1.21-pre2)
 
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−
This page documents the changes from the [[Protocol|last stable Minecraft release]] (currently 1.4.5, protocol 49) to the current pre-release (or weekly release). 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.
  
−
== 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.
−
-None-
 
  
−
== Changed Packets ==
+
== Contents ==
  
−
-None-
+
<div style="float:right;">__TOC__</div>
  
−
== Changed Data Types ==
+
=== Data types ===
  
−
=== Spawn Object/Vehicle (0x17) ===
+
No changes documented so far.
  
−
''Server to Client''
+
=== 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="9" | 0x17
+
|-
−
| class="col1 centeralign" | EID
+
!colspan="4"| Play clientbound
−
| class="col2 centeralign" | int
+
{{PacketList|0x7A|Clientbound Report Details (play)|rel=added}}
−
| class="col3 centeralign" | <code>62</code>
+
{{PacketList|0x7B|Clientbound Server Links (play)|rel=added}}
−
| class="col4" | Entity ID of the Object
+
|-
−
|- class="row2"
 
−
| class="col0 centeralign" | Type
 
−
| class="col1 centeralign" | byte
 
−
| class="col2 centeralign" | <code>11</code>
 
−
| class="col3" | The type of object (see [[Entities#Objects]])
 
−
|- class="row3"
 
−
| class="col0 centeralign" | X
 
−
| class="col1 centeralign" | int
 
−
| class="col2 centeralign" | <code>16080</code>
 
−
| class="col3" | The Absolute Integer X Position of the object
 
−
|- class="row4"
 
−
| class="col0 centeralign" | Y
 
−
| class="col1 centeralign" | int
 
−
| class="col2 centeralign" | <code>2299</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>592</code>
 
−
| class="col3" | The Absolute Integer Z Position of the object
 
−
|- class="row5"
 
−
| class="col0 centeralign" | '''Yaw'''
 
−
| class="col1 centeralign" | '''byte'''
 
−
| class="col2 centeralign" | '''<code>0</code>'''
 
−
| class="col3" | '''The yaw in steps of 2p/256'''
 
−
|- class="row5"
 
−
| class="col0 centeralign" | '''Pitch'''
 
−
| class="col1 centeralign" | '''byte'''
 
−
| class="col2 centeralign" | '''<code>67</code>'''
 
−
| class="col3" | '''The pitch in steps of 2p/256 '''
 
−
|- class="row6"
 
−
| class="col0 centeralign" | [[Object Data]]
 
−
| class="col1 centeralign" |
 
−
| class="col2 centeralign" |
 
−
| class="col3" | [[Object Data]]
 
−
|- class="row6"
 
−
| class="col0" | Total Size:
 
−
| class="col1 rightalign" colspan="4" | 22 or 28 bytes
 
 
|}
 
|}
  
−
=== Map Chunk Bulk (0x38) ===
+
== Handshake ==
  
−
''Server to Client''
+
No changes so far.
  
−
{| class="wikitable"
+
== Status ==
−
|- class="row0"
+
 
−
| class="col0" | Packet ID
+
No changes so far.
−
| class="col1" | Field Name
+
 
−
| class="col2" | Field Type
+
== Login ==
−
| class="col3" | Example
+
 
−
| class="col4" | Notes
+
No changes so far.
−
|- class="row1"
+
 
−
| class="col0 centeralign" rowspan=5 | 0x38
+
== Configuration ==
−
| class="col1 centeralign" | Chunk Count
+
 
−
| class="col2 centeralign" | short
+
=== Clientbound ===
−
| class="col3 centeralign" |  
+
 
−
| class="col4" | The number of chunks in this packet
+
==== Clientbound Report Details (configuration) ====
−
|- class="row2"
+
 
−
| class="col0 centeralign" | Chunk data length
+
Contains a list of key-value text entries that are included in any crash or disconnection report generated during connection to the server.
−
| class="col1 centeralign" | int
+
 
−
| class="col2 centeralign" |  
+
{| class="wikitable" {{added}}
−
| class="col3" | the size of the data field
+
! Packet ID
−
|- class="row2"
+
! State
−
| class="col0 centeralign" | '''Unknown use'''
+
! Bound To
−
| class="col1 centeralign" | '''boolean'''
+
! colspan="2"| Field Name
−
| class="col2 centeralign" |  
+
! colspan="2"| Field Type
−
| class="col3" | '''Has only been observed as true when sniffing a vanilla connection.'''
+
! Notes
−
|- class="row3"
+
|-
−
| class="col0 centeralign" | Data
+
| rowspan="3"| 0x0F
−
| class="col1 centeralign" | byte array
+
| rowspan="3"| Configuration
−
| class="col2 centeralign" |  
+
| rowspan="3"| Client
−
| class="col3" | Compressed chunk data
+
| colspan="2"| Details Count
−
|- class="row4"
+
| colspan="2"| {{Type|VarInt}} (32)
−
| class="col0 centeralign" | meta information
+
| The number of details in the following array.
−
| class="col1 centeralign" | chunk bulk meta information
+
|-
−
| class="col2 centeralign" |
+
| rowspan="2"| Details
−
| class="col3 centeralign" | Chunk count times the Meta information structure (See notes for details)
+
| Title
−
|- class="row5"
+
| rowspan="2"| {{Type|Array}}
−
| class="col0" | Total Size:
+
| {{Type|String}} (128)
−
| class="col1 rightalign" colspan="4" | 7 + (Chunk data size) + 12 * (Chunk Count) bytes
+
|
 +
|-
 +
| Description
 +
| {{Type|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).
 +
 
 +
{| class="wikitable" {{added}}
 +
! 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.
 +
|}
 +
 
 +
 
 +
{| 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.
 +
 
 +
== 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.
 +
 
 +
{| class="wikitable" {{added}}
 +
! Packet ID
 +
! State
 +
! Bound To
 +
! colspan="2"| Field Name
 +
! colspan="2"| Field Type
 +
! Notes
 +
|-
 +
| rowspan="3"| 0x7A
 +
| rowspan="3"| Configuration
 +
| rowspan="3"| Client
 +
| colspan="2"| Details Count
 +
| colspan="2"| {{Type|VarInt}} (32)
 +
| The number of details in the following array.
 +
|-
 +
| rowspan="2"| Details
 +
| Title
 +
| rowspan="2"| {{Type|Array}}
 +
| {{Type|String}} (128)
 +
|
 +
|-
 +
| Description
 +
| {{Type|String}} (4096)
 +
|
 
|}
 
|}
  
−
== Removed Packets ==
+
==== Clientbound Server Links (play) ====
  
−
0x15 "Spawn Dropped Item" has been removed, and its purpose is now handled by 0x17 "Spawn Object/Vehicle". The entity type ID is 0x02. You can set the item type by sending an 0x28 "Entity Metadata" packet with a slot at index 10. [https://gist.github.com/4325656 Vanilla packet dump]
+
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
 +
! 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.
 +
|}
  
−
'''1.4.6 Pre-release'''
+
{| 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
 +
|
 +
|-
 +
|}
  
−
Protocol version is now 51. Spawn dropped item (0x15) removed, merged into spawn object (0x17). Map chunk bulk (0x38) adds a boolean field with unknown purpose.
+
=== Serverbound ===
  
−
'''12w49a'''
+
No changes so far.
  
−
Protocol version is now 50. Packet 0x10 is sent both ways. Packet 0x17 has two new bytes, currently unknown.
+
[[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"