Difference between revisions of "Pre-release protocol"

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This page documents the changes from the [[Protocol|last stable Minecraft release]] (currently [[Protocol version numbers|1.9, protocol 107]]) to the current pre-release (currently [[Protocol version numbers|1.9.1-pre2, protocol 108]]). Note that this page contains bleeding-edge information that may not be completely or correctly documented.
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There is currently a pre-release version available: 1.21-pre2, but it has not yet been documented. For the latest stable Minecraft release, see the [[Protocol|Protocol]] page. For previous pre-release pages, see the [[Protocol version numbers|Protocol version numbers]] page.
  
 
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.
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=== Packets ===
 
=== Packets ===
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{| class="wikitable"
 
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! ID
 
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! Packet name
 
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!colspan="2"| Documentation
 
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|-
 
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!colspan="4"| Handshaking serverbound
 
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{{PacketList|0x00|Handshake}}
 
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|-
 
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!colspan="4"| Play clientbound
 
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{{PacketList|0x23|Join Game}}
 
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|}
 
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== New/modified data types ==
 
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None so far.
 
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== Handshaking ==
 
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=== Clientbound ===
 
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No changes so far.
 
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=== Serverbound ===
 
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==== Handshake ====
 
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This causes the server to switch into the target state.
 
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{| class="wikitable"
 
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! Packet ID
 
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! State
 
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! Bound To
 
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! Field Name
 
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! Field Type
 
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! Notes
 
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|-
 
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|rowspan="4"| 0x00
 
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|rowspan="4"| Handshaking
 
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|rowspan="4"| Server
 
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| Protocol Version
 
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| VarInt
 
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| See [[protocol version numbers]] (currently {{Change|107|108}})
 
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|-
 
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| Server Address
 
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| String
 
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| hostname or IP, e.g. localhost or 127.0.0.1 (does this support IPv6?)
 
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|-
 
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| Server Port
 
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| Unsigned Short
 
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| default is 25565
 
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|-
 
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| Next State
 
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| VarInt Enum
 
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| 1 for [[#Status|status]], 2 for [[#Login|login]]
 
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|}
 
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== Play ==
 
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=== Clientbound ===
 
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==== Join Game ====
 
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See [[Protocol Encryption]] for information on logging in.
 
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{| class="wikitable"
 
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! Packet ID
 
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! State
 
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! Bound To
 
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! Field Name
 
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! Field Type
 
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! Notes
 
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|-
 
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|rowspan="7"| 0x23
 
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|rowspan="7"| Play
 
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|rowspan="7"| Client
 
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| Entity ID
 
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| Int
 
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| The player's Entity ID (EID)
 
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|-
 
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| Gamemode
 
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| Unsigned Byte
 
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| 0: Survival, 1: Creative, 2: Adventure, 3: Spectator. Bit 3 (0x8) is the hardcore flag.
 
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|-
 
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| Dimension
 
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| {{Change|Byte|Int}} Enum
 
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| -1: Nether, 0: Overworld, 1: End
 
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|-
 
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| Difficulty
 
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| Unsigned Byte
 
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| 0: peaceful, 1: easy, 2: normal, 3: hard
 
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|-
 
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| Max Players
 
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| Unsigned Byte
 
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| Used by the client to draw the player list
 
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|-
 
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| Level Type
 
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| String
 
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| default, flat, largeBiomes, amplified, default_1_1
 
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|-
 
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| Reduced Debug Info
 
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| Boolean
 
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| If true, a Notchian client shows reduced information on the {{Minecraft Wiki|debug screen}}.
 
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|}
 
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=== Serverbound ===
 
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No changes so far.
 
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== Status ==
 
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=== Clientbound ===
 
  
 
No changes so far.
 
No changes so far.
  
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=== Serverbound ===
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[[Category:Minecraft Modern]]
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No changes so far.
 
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== Login ==
 
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=== Clientbound ===
 
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No changes so far.
 
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=== Serverbound ===
 
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No changes so far.
 

Latest revision as of 09:24, 6 June 2024

There is currently a pre-release version available: 1.21-pre2, but it has not yet been documented. For the latest stable Minecraft release, see the Protocol page. For previous pre-release pages, see the Protocol version numbers page.

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 so far.

Packets

No changes so far.

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