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 1.7.4, protocol 4) to the current pre-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.
−
He 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 occured to the respective packets there.
 
  
−
== Protocol History ==
+
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.
  
−
=== 14w03a ===
+
== Contents ==
  
−
* New data type 'Position'
+
<div style="float:right;">__TOC__</div>
−
* 'Spawn Position' now uses the 'Position' data type
 
−
* 'Use Bed' now uses the 'Position' data type
 
−
* 'Block Change' now uses the 'Position' data type
 
−
* 'Block Action' now uses the 'Position' data type
 
−
* 'Block Break Animation' now uses the 'Position' data type
 
−
* 'Effect' now uses the 'Position' data type
 
−
* 'Sign Update' now uses the 'Position' data type
 
−
* 'Update Block Entity' now uses the 'Position' data type
 
−
* 'Sign Editor Open' nows uses the 'Position' data type
 
  
−
=== 14w02a ===
+
=== Data types ===
  
−
* Added 'Position' to Chat Message Clientbound
+
No changes documented so far.
−
* Remove Player Position And Look's 'OnGround' clientbound
 
−
* Added 'Flags' to Player Position And Look clientbound
 
−
* Changed Open Inventory's 'Inventory Type' type from byte to string
 
−
* Added Server Difficulty
 
−
* Removed Client Settings' 'Difficulty'
 
  
−
== Protocol Version ==
+
=== Packets ===
  
 
{| class="wikitable"
 
{| class="wikitable"
−
! Version !! Protocol
+
! ID
−
|-
+
! Packet name
−
| 14w02a || 5
+
!colspan="2"| Documentation
−
|-
+
|-
−
| 14w03a || 6
+
!colspan="4"| Configuration clientbound
 +
{{PacketList|0x0F|Clientbound Report Details (configuration)|rel=added}}
 +
{{PacketList|0x10|Clientbound Server Links (configuration)|rel=added}}
 +
|-
 +
!colspan="4"| Play clientbound
 +
{{PacketList|0x7A|Clientbound Report Details (play)|rel=added}}
 +
{{PacketList|0x7B|Clientbound Server Links (play)|rel=added}}
 +
|-
 
|}
 
|}
  
−
== New data types ==
+
== Handshake ==
  
−
=== Position ===
+
No changes so far.
−
{| class="wikitable"
 
−
! Name !! Type
 
−
|-
 
−
| X || Int
 
−
|-
 
−
| Y || Byte
 
−
|-
 
−
| Z || Int
 
−
|}
 
  
−
== Play ==
+
== Status ==
−
 
 
−
=== Clientbound ===
 
  
−
==== Chat Message ====
+
No changes so far.
  
−
Identifying the difference between Chat/System Message is important as it helps respect the user's chat visibility options. While position 2 accepts json formatting it will not display, old style formatting works
+
== Login ==
−
 
−
{| class="wikitable"
 
−
! Packet ID !! Field Name !! Field Type !! Notes
 
−
|-
 
−
| rowspan=2 | 0x02
 
−
| JSON Data || String || https://gist.github.com/thinkofdeath/e882ce057ed83bac0a1c , Limited to 32767 bytes
 
−
|-
 
−
| Position || Byte || 0 - Chat (chat box) ,1 - System Message (chat box), 2 - Above action bar
 
−
|}
 
−
{{Warning|Malformed JSON will disconnect the client}}
 
  
−
==== Spawn Position ====
+
No changes so far.
  
−
Sent by the server after login to specify the coordinates of the spawn point (the point at which players spawn at, and which the compass points to). It can be sent at any time to update the point compasses point at.
+
== Configuration ==
  
−
{| class="wikitable"
+
=== Clientbound ===
−
! Packet ID !! Field Name !! Field Type !! Notes
 
−
|-
 
−
| rowspan=1 | 0x05
 
−
| Location || Position || Spawn location
 
−
|}
 
  
−
==== Player Position And Look ====  
+
==== Clientbound Report Details (configuration) ====
  
−
Updates the players position on the server.
+
Contains a list of key-value text entries that are included in any crash or disconnection report generated during connection to the server.
−
If the distance between the last known position of the player on the server and the new position set by this packet is greater than 100 units will result in the client being kicked for "You moved too quickly :( (Hacking?)"
 
−
Also if the fixed-point number of X or Z is set greater than <code>3.2E7D</code> the client will be kicked for "Illegal position"
 
  
−
Yaw is measured in degrees, and does not follow classical trigonometry rules. The unit circle of yaw on the XZ-plane starts at (0, 1) and turns counterclockwise, with 90 at (-1, 0), 180 at (0,-1) and 270 at (1, 0). Additionally, yaw is not clamped to between 0 and 360 degrees; any number is valid, including negative numbers and numbers greater than 360.
+
{| class="wikitable" {{added}}
−
 
+
! Packet ID
−
Pitch is measured in degrees, where 0 is looking straight ahead, -90 is looking straight up, and 90 is looking straight down.
+
! State
−
 
+
! Bound To
−
The yaw of player (in degrees), standing at point (x0,z0) and looking towards point (x,z) one can be calculated with:
+
! colspan="2"| Field Name
−
  l = x-x0
+
! colspan="2"| Field Type
−
  w = z-z0
+
! Notes
−
  c = sqrt( l*l + w+w )
+
|-
−
  alpha1 = -arcsin(l/c)/PI*180
+
| rowspan="3"| 0x0F
−
  alpha2 =  arccos(w/c)/PI*180
+
| rowspan="3"| Configuration
−
  if alpha2 > 90 then
+
| rowspan="3"| Client
−
    yaw = 180 - alpha1
+
| colspan="2"| Details Count
−
  else
+
| colspan="2"| {{Type|VarInt}} (32)
−
    yaw = alpha1
+
| The number of details in the following array.
−
 
+
|-
−
You can get a unit vector from a given yaw/pitch via:
+
| rowspan="2"| Details
−
  x = -cos(pitch) * sin(yaw)
+
| Title
−
  y = -sin(pitch)
+
| rowspan="2"| {{Type|Array}}
−
  z =  cos(pitch) * cos(yaw)
+
| {{Type|String}} (128)
−
 
+
|
−
About the flags field:
+
|-
−
  <Dinnerbone> It's a bitfield, X/Y/Z/Y_ROT/X_ROT. If X is set, the x value is relative and not absolute.
+
| Description
−
 
+
| {{Type|String}} (4096)
−
{| class="wikitable"
+
|
−
! Packet ID !! Field Name !! Field Type !! Notes
 
−
|-
 
−
| rowspan=6| 0x08
 
−
| X || Double || Absolute/Relative position
 
−
|-
 
−
| Y || Double || Absolute/Relative position
 
−
|-
 
−
| Z || Double || Absolute/Relative position
 
−
|-
 
−
| Yaw || Float || Absolute/Relative rotation on the X Axis, in degrees
 
−
|-
 
−
| Pitch || Float || Absolute/Relative rotation on the Y Axis, in degrees
 
−
|-
 
−
| Flags || Byte ||
 
−
{| class="wikitable"
 
−
| X || 0x01
 
−
|-
 
−
| Y || 0x02
 
−
|-
 
−
| Z || 0x04
 
−
|-
 
−
| Y_ROT || 0x08
 
−
|-
 
−
| X_ROT || 0x10
 
−
|}
 
 
|}
 
|}
  
−
==== Use Bed ====  
+
==== Clientbound Server Links (configuration) ====
  
−
This packet tells that a player goes to bed.
+
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).
  
−
The client with the matching  Entity ID will go into bed mode.
+
{| class="wikitable" {{added}}
−
 
+
! Packet ID
−
This Packet is sent to all nearby players including the one sent to bed.
+
! State
−
 
+
! Bound To
−
{| class="wikitable"
+
! colspan="2"| Field Name
−
! Packet ID !! Field Name !! Field Type !! Notes
+
! colspan="2"| Field Type
−
|-
+
! Notes
−
| rowspan=2 | 0x0A
+
|-
−
| Entity ID || Int || Player ID
+
| rowspan="4"| 0x10
−
|-
+
| rowspan="4"| Configuration
−
| Location || Position || Block location of the head part of the bed
+
| 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.
 
|}
 
|}
  
−
==== Block Change ====
 
−
{| class="wikitable"
 
−
! Packet ID !! Field Name !! Field Type !! Notes
 
−
|-
 
−
| rowspan=3 | 0x23
 
−
| Location || Position|| Block Coordinates
 
−
|-
 
−
| Block ID || VarInt || The new block ID for the block
 
−
|-
 
−
| Block Metadata || Unsigned Byte || The new metadata for the block
 
−
|}
 
  
−
==== Block Action ====
+
{| 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
 +
|
 +
|-
 +
|}
  
−
This packet is used for a number of things:
+
=== Serverbound ===
−
* <div class="li">Chests opening and closing
 
−
* Pistons pushing and pulling
 
−
* Note blocks playing
 
  
−
See Also: [[Block Actions]]
+
No changes so far.
  
−
{| class="wikitable"
+
== Play ==
−
! Packet ID !! Field Name !! Field Type !! Notes
 
−
|-
 
−
| rowspan=4 | 0x24
 
−
| Location || Position || Block Coordinates
 
−
|-
 
−
| Byte 1 || Unsigned Byte || Varies depending on block - see [[Block_Actions]]
 
−
|-
 
−
| Byte 2 || Unsigned Byte || Varies depending on block - see [[Block_Actions]]
 
−
|-
 
−
| Block Type || VarInt || The block type for the block
 
−
|}
 
  
−
==== Block Break Animation ====
+
=== Clientbound ===
−
 
 
−
0-9 are the displayable destroy stages and each other number means that there is no animation on this coordinate.
 
  
−
You can also set an animation to air! The animation will still be visible.
+
==== Clientbound Report Details (play) ====
  
−
If you need to display several break animations at the same time you have to give each of them a unique Entity ID.
+
Contains a list of key-value text entries that are included in any crash or disconnection report generated during connection to the server.
  
−
Also if you set the coordinates to a special block like water etc. it won't show the actual break animation but some other interesting effects. (Water will loose it's transparency)
+
{| class="wikitable" {{added}}
−
 
+
! Packet ID
−
{| class="wikitable"
+
! State
−
! Packet ID !! Field Name !! Field Type !! Notes
+
! Bound To
−
|-
+
! colspan="2"| Field Name
−
| rowspan=3 | 0x25
+
! colspan="2"| Field Type
−
| Entity ID || VarInt || Entity's ID
+
! Notes
−
|-
+
|-
−
| Location || Position || Block Position
+
| rowspan="3"| 0x7A
−
|-
+
| rowspan="3"| Configuration
−
| Destroy Stage || Byte || 0 - 9
+
| 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)
 +
|
 
|}
 
|}
  
−
==== Effect ====
+
==== Clientbound Server Links (play) ====
  
−
Sent when a client is to play a sound or particle effect.
+
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).
  
−
By default, the minecraft client adjusts the volume of sound effects based on distance. The final boolean field is used to disable this, and instead the effect is played from 2 blocks away in the correct direction. Currently this is only used for effect 1013 (mob.wither.spawn), and is ignored for any other value by the client.
+
{| class="wikitable" {{added}}
−
 
+
! Packet ID
−
{| class="wikitable"
+
! State
−
! Packet ID !! Field Name !! Field Type !! Notes
+
! Bound To
−
|-
+
! colspan="2"| Field Name
−
| rowspan="4" | 0x28
+
! colspan="2"| Field Type
−
| Effect ID || Int || The ID of the effect, see below.
+
! Notes
−
|-
+
|-
−
| Location || Position|| The location of the effect
+
| rowspan="4"| 0x7B
−
|-
+
| rowspan="4"| Configuration
−
| Data || Int || Extra data for certain effects, see below.
+
| rowspan="4"| Client
−
|-
+
| colspan="2"| Links Count
−
| Disable relative volume || Bool || See above
+
| 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.
 
|}
 
|}
  
−
===== Effects =====
+
{| class="wikitable" {{added}}
−
 
+
! ID
−
{| class="wikitable"
+
! Name
−
! ID !! Name
+
! Notes
−
|-
+
|-
−
| colspan=2 | '''Sound'''
+
| 0
−
|-
+
| Bug Report
−
| 1000|| <code>random.click</code>
+
| Displayed on connection error screen; included as a comment in the disconnection report.
−
|-
+
|-
−
| 1001|| <code>random.click</code>
+
| 1
−
|-
+
| Community Guidelines
−
| 1002|| <code>random.bow</code>
+
|  
−
|-
+
|-
−
| 1003|| <code>random.door_open</code> or <code>random.door_close</code> (50/50 chance)
+
| 2
−
|-
+
| Support
−
| 1004|| <code>random.fizz</code>
+
|  
−
|-
+
|-
−
| 1005|| Play a music disc. '''Data''' [http://www.minecraftwiki.net/wiki/Music_Discs Record ID]
+
| 3
−
|-
+
| Status
−
| ''(1006 not assigned)'' ||
+
|  
−
|-
+
|-
−
| 1007|| <code>mob.ghast.charge</code>
+
| 4
−
|-
+
| Feedback
−
| 1008|| <code>mob.ghast.fireball</code>
+
|  
−
|-
+
|-
−
| 1009|| <code>mob.ghast.fireball</code>, but with a lower volume.
+
| 5
−
|-
+
| Community
−
| 1010|| <code>mob.zombie.wood</code>
+
|  
−
|-
+
|-
−
| 1011|| <code>mob.zombie.metal</code>
+
| 6
−
|-
+
  | Website
−
| 1012|| <code>mob.zombie.woodbreak</code>
+
  |  
−
|-
+
|-
−
| 1013|| <code>mob.wither.spawn</code>
+
| 7
−
|-
+
| Forums
−
| 1014|| <code>mob.wither.shoot</code>
+
|  
−
|-
+
|-
−
| 1015|| <code>mob.bat.takeoff</code>
+
| 8
−
|-
+
| News
−
| 1016|| <code>mob.zombie.infect</code>
+
|  
−
|-
+
|-
−
| 1017|| <code>mob.zombie.unfect</code>
+
| 9
−
|-
+
| Announcements
−
| 1018|| <code>mob.enderdragon.end</code>
+
|  
−
|-
+
|-
−
| 1020|| <code>random.anvil_break</code>
+
|}
−
|-
 
−
| 1021|| <code>random.anvil_use</code>
 
−
|-
 
−
| 1022|| <code>random.anvil_land</code>
 
−
|-
 
−
| colspan=2 | '''Particle'''
 
−
|-
 
−
| 2000|| Spawns 10 smoke particles, e.g. from a fire. '''Data''' direction, see below
 
−
|-
 
−
| 2001|| Block break. '''Data''' [http://www.minecraftwiki.net/wiki/Data_values Block ID]
 
−
|-
 
−
| 2002|| Splash potion. Particle effect + glass break sound. '''Data''' [http://www.lb-stuff.com/Minecraft/PotionDataValues1.9pre3.txt Potion ID]
 
−
|-
 
−
| 2003|| Eye of ender entity break animation - particles and sound
 
−
|-
 
−
| 2004|| Mob spawn particle effect: smoke + flames
 
−
|-
 
−
| 2005|| Spawn "happy villager" effect (green crosses), used for bonemealing vegetation.
 
−
|}
 
−
 
 
−
Smoke directions:
 
−
 
 
−
{| class="wikitable"
 
−
! ID !! Direction
 
−
|-
 
−
| 0 || South - East
 
−
|-
 
−
| 1 || South
 
−
|-
 
−
| 2 || South - West
 
−
|-
 
−
| 3 || East
 
−
|-
 
−
| 4 || (Up or middle ?)
 
−
|-
 
−
| 5 || West
 
−
|-
 
−
| 6 || North - East
 
−
|-
 
−
| 7 || North
 
−
|-
 
−
| 8 || North - West
 
−
|}
 
−
 
 
−
==== Open Window ====
 
−
 
 
−
This is sent to the client when it should open an inventory, such as a chest, workbench, or furnace. This message is not sent anywhere for clients opening their own inventory.
 
−
 
 
−
{| class="wikitable"
 
−
! Packet ID !! Field Name !! Field Type !! Notes
 
−
|-
 
−
| rowspan="6" | 0x2D
 
−
| Window id || Unsigned Byte || A unique id number for the window to be displayed. Notchian server implementation is a counter, starting at 1.
 
−
|-
 
−
| Inventory Type || String || The window type to use for display. Check below
 
−
|-
 
−
| Window title || String || The title of the window.
 
−
|-
 
−
| Number of Slots || Unsigned Byte || Number of slots in the window (excluding the number of slots in the player inventory).
 
−
|-
 
−
| Use provided window title || Bool || If false, the client will look up a string like "window.minecart". If true, the client uses what the server provides.
 
−
|-
 
−
| Entity ID || Int || EntityHorse's entityId. Only sent when window type is equal to "EntityHorse".
 
−
|}
 
−
 
 
−
See [[Inventory#Windows|inventory windows]] for further information.
 
−
 
 
−
==== Update Sign ====
 
−
 
 
−
This message is sent from the server to the client whenever a sign is discovered or created. This message is NOT sent when a sign is destroyed or unloaded.
 
−
 
 
−
{| class="wikitable"
 
−
! Packet ID !! Field Name !! Field Type !! Notes
 
−
|-
 
−
| rowspan="7" | 0x33
 
−
| Location || Position || Block Coordinates
 
−
|-
 
−
| Line 1 || String || First line of text in the sign
 
−
|-
 
−
| Line 2 || String || Second line of text in the sign
 
−
|-
 
−
| Line 3 || String || Third line of text in the sign
 
−
|-
 
−
| Line 4 || String || Fourth line of text in the sign
 
−
|}
 
−
 
 
−
==== Update Block Entity ====
 
−
 
 
−
Essentially a block update on a block entity.
 
−
 
 
−
{| class="wikitable"
 
−
! Packet ID !! Field Name !! Field Type !! Notes
 
−
|-
 
−
| rowspan="4" | 0x35
 
−
| Location || Position ||
 
−
|-
 
−
| Action || Unsigned Byte || The type of update to perform
 
−
|-
 
−
| Data length || Short || Varies
 
−
|-
 
−
| NBT Data || Byte Array || Present if data length > 0. Compressed with [[wikipedia:Gzip|gzip]]. Varies
 
−
|}
 
−
 
 
−
'''Actions'''
 
−
 
 
−
* '''1''': Set mob displayed inside a mob spawner. Custom 1 contains the [[Entities#Mobs|mob type]]
 
−
 
 
−
==== Sign Editor Open ====
 
−
 
 
−
Sent on placement of sign.
 
−
 
 
−
{| class="wikitable"
 
−
! Packet ID !! Field Name !! Field Type !! Notes
 
−
|-
 
−
| rowspan="3" | 0x36
 
−
| Location || Position || Block coordinates
 
−
|}
 
−
 
 
−
 
 
−
==== Server Difficulty ====
 
−
 
 
−
Changes the difficulty setting in the client's option menu
 
−
{| class="wikitable"
 
−
! Packet ID !! Field Name !! Field Type !! Notes
 
−
|-
 
−
| rowspan="1" | 0x41
 
−
| Difficulty || Unsigned Byte || 0:PEACEFUL, 1:EASY, 2:NORMAL, 3: HARD
 
−
|}
 
  
 
=== Serverbound ===
 
=== Serverbound ===
  
−
==== Client Settings ====
+
No changes so far.
−
 
 
−
Sent when the player connects, or when settings are changed.
 
−
 
 
−
{| class="wikitable"
 
−
! Packet ID !! Field Name !! Field Type !! Notes
 
−
|-
 
−
| rowspan="6" | 0x15
 
−
| Locale || String || en_GB
 
−
|-
 
−
| View distance || Byte || 0-3 for 'far', 'normal', 'short', 'tiny'.
 
−
|-
 
−
| Chat flags || Byte || Chat settings. See notes below.
 
−
|-
 
−
| Chat colours || Bool || "Colours" multiplayer setting
 
−
|-
 
−
| Show Cape || Bool || Client-side "show cape" option
 
−
|}
 
−
 
 
−
Chat flags has several values packed into one byte.
 
  
−
'''Chat Enabled:''' Bits 0-1. 00: Enabled.  01: Commands only.  10: Hidden.
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[[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.

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