Protocol: Revision history

14 September 2024

• curprev 12:0212:02, 14 September 2024‎ imported>LPT4‎ 245,587 bytes 0‎ →‎Status: updated section names
• curprev 12:0112:01, 14 September 2024‎ imported>LPT4‎ 245,587 bytes 0‎ →‎Handshaking: updated handshake section name
• curprev 12:0012:00, 14 September 2024‎ imported>LPT4‎ 245,587 bytes +436‎ →‎Login: added resource locations to packets
• curprev 11:4211:42, 14 September 2024‎ imported>LPT4‎ 245,151 bytes +106‎ →‎Status: added resource locations to packets
• curprev 11:3511:35, 14 September 2024‎ imported>LPT4‎ 245,045 bytes +22‎ →‎Handshaking: added resource location for the "Handshake" packet
• curprev 11:3411:34, 14 September 2024‎ imported>LPT4‎ 245,023 bytes 0‎ →‎Packet format
• curprev 11:3111:31, 14 September 2024‎ imported>LPT4‎ 245,023 bytes +80‎ →‎Packet format: added information about the packets report

10 September 2024

• curprev 17:2117:21, 10 September 2024‎ imported>LukynkaCZE‎ m 244,943 bytes +23‎ Add "Downloaded" to Resource Pack Response (play)

30 August 2024

• curprev 21:0621:06, 30 August 2024‎ imported>Wiserdis‎ m 244,920 bytes +46‎ clarified that "Strict Error Handling" field is still present in the packet as of version 1.21.1
• curprev 19:4719:47, 30 August 2024‎ imported>Wiserdis‎ m 244,874 bytes 0‎ Changed "Ping Response" to "Pong Response" in the "Status" phase

26 August 2024

• curprev 12:3612:36, 26 August 2024‎ imported>LassiPulkkinen‎ 244,874 bytes +554‎ →‎Set Default Spawn Position: Document use as default player position, default values.
• curprev 04:5904:59, 26 August 2024‎ imported>Matdoesdev‎ 244,320 bytes +106‎ add payload length to Store Cookie (configuration)

23 August 2024

• curprev 19:4119:41, 23 August 2024‎ imported>ZWORX52‎ m 244,214 bytes +4‎ →‎Server Links (configuration): Reword note for "is built-in" to clarify that true means it's an enum

12 August 2024

• curprev 15:1015:10, 12 August 2024‎ imported>Rmheuer‎ 244,210 bytes +2‎ 1.21.1 has no protocol changes from 1.21

11 August 2024

• curprev 18:3218:32, 11 August 2024‎ imported>ZWORX52‎ m 244,208 bytes −1‎ →‎Encryption Request: typo "wheather" -> "whether"

8 August 2024

• curprev 20:3720:37, 8 August 2024‎ imported>LassiPulkkinen‎ 244,209 bytes −436‎ Undo revision 19452 by Epixix (talk); I agree with this in principle, but "packet" is unfortunately a very established term in the community and is also used in the Minecraft source code. Changing it now would probably lead to a lot of confusion, which wouldn't necessarily fade over time unless Mojang also got on board.
• curprev 20:2620:26, 8 August 2024‎ imported>Epixix‎ 244,645 bytes +436‎ The term "packet" is ambiguous since it can either refer to an IP Protocol Data Unit (IP PDU/IP Packet), or in more loose terms, any grouping of bytes that is sent over the network. "Message" removes the confusion as it is already established in terms like "reliable message stream"; for example, Minecraft implements a "reliable message stream" over TCP, and TCP itself implements a "reliable byte stream". See https://en.wikipedia.org/wiki/Reliable_byte_stream

5 August 2024

• curprev 00:4600:46, 5 August 2024‎ imported>LassiPulkkinen‎ 244,209 bytes +18‎ →‎Cookie Response (login): Make payload length optional (update duplidate packet to reflect edit on Cookie Response (play)).

4 August 2024

• curprev 23:5823:58, 4 August 2024‎ imported>ZWORX52‎ m 244,191 bytes +1‎ →‎Store Cookie (configuration): fix Byte Array type (add space)
• curprev 20:2920:29, 4 August 2024‎ imported>ZWORX52‎ m 244,190 bytes +18‎ →‎Cookie Response (configuration): there is no VarInt for the payload length if there is no payload: make the VarInt optional

2 August 2024

• curprev 17:0217:02, 2 August 2024‎ imported>Lumin0u‎ m 244,172 bytes 0‎ →‎Merchant Offers: typo

31 July 2024

• curprev 02:1902:19, 31 July 2024‎ imported>ZWORX52‎ 244,172 bytes +22‎ move paragraph about Property field to the Login Success packet and reference it in Player Info Update

27 July 2024

• curprev 23:2723:27, 27 July 2024‎ imported>Oq‎ m 244,150 bytes −9‎ →‎Custom Report Details: fix
• curprev 15:3815:38, 27 July 2024‎ imported>LassiPulkkinen‎ 244,159 bytes +20‎ →‎Other definitions: Update data generator command to work with server.jar bundler (1.18+).
• curprev 11:2311:23, 27 July 2024‎ imported>PhilippDE‎ m 244,139 bytes −2‎ fix Client Status reference

22 July 2024

• curprev 19:3719:37, 22 July 2024‎ imported>Oq‎ m 244,141 bytes +51‎ →‎Player Chat Message: more info
• curprev 06:2406:24, 22 July 2024‎ imported>Oq‎ m 244,090 bytes −9‎ →‎Server Links: fix

15 July 2024

• curprev 23:4323:43, 15 July 2024‎ imported>Targz‎ 244,099 bytes +186‎ →‎Clientbound Known Packs: Added that the minecraft:core pack is required for a normal login sequence

13 July 2024

• curprev 21:2421:24, 13 July 2024‎ imported>LassiPulkkinen‎ 243,913 bytes +57‎ →‎Synchronize Player Position: Link to bug report about lack of yaw clamping.
• curprev 17:3717:37, 13 July 2024‎ imported>Mudkipdev‎ 243,856 bytes +32‎ explain offline mode uuids better

12 July 2024

• curprev 03:0603:06, 12 July 2024‎ imported>Patyhank‎ m 243,824 bytes −343‎ Remove added comment in Header in previous changes
• curprev 03:0403:04, 12 July 2024‎ imported>Patyhank‎ 244,167 bytes +1,212‎ Merchant Offers: InputItem was changed to special type in 1.21

29 June 2024

• curprev 22:4122:41, 29 June 2024‎ imported>LassiPulkkinen‎ 242,955 bytes +90‎ Add Template:Main links to Chat on chat-related packets.

27 June 2024

• curprev 02:4702:47, 27 June 2024‎ imported>WinX64‎ 242,865 bytes +285‎ →‎Update Attributes: Updated to 1.21

26 June 2024

• curprev 14:3114:31, 26 June 2024‎ imported>LaserSlimeHD‎ 242,580 bytes −76‎ →‎Projectile Power: This was changed to a single field in 1.21
• curprev 14:2314:23, 26 June 2024‎ imported>LaserSlimeHD‎ 242,656 bytes +144‎ Add rotation fields that were added to the Use Item packet in 1.21

23 June 2024

• curprev 18:5918:59, 23 June 2024‎ imported>LukynkaCZE‎ m 242,512 bytes 0‎ Fix position of the Particle ID field in the Particle packet

18 June 2024

• curprev 10:3010:30, 18 June 2024‎ imported>Bse‎ m 242,512 bytes 0‎ →‎Transfer (configuration): typo

14 June 2024

• curprev 17:2217:22, 14 June 2024‎ imported>WinX64‎ 242,512 bytes −310‎ →‎Registry Data: Added reference to the Registry Data page

13 June 2024

• curprev 18:3918:39, 13 June 2024‎ imported>Mudkipdev‎ 242,822 bytes −3‎ No edit summary
• curprev 18:3418:34, 13 June 2024‎ imported>Mudkipdev‎ 242,825 bytes −60‎ No edit summary
• curprev 18:3318:33, 13 June 2024‎ imported>Mudkipdev‎ 242,885 bytes +2,823‎ forgot to add pre-release docs
• curprev 16:5216:52, 13 June 2024‎ imported>Mudkipdev‎ 240,062 bytes +974‎ new packet stubs
• curprev 16:4716:47, 13 June 2024‎ imported>Mudkipdev‎ 239,088 bytes −79‎ begin 1.21 update

11 June 2024

• curprev 19:2819:28, 11 June 2024‎ imported>LassiPulkkinen‎ 239,167 bytes −40‎ Rewrite explanation of entity position deltas, remove the two step multiplication (32 * 128); I presume the point there was to contrast with the old pre-1.9 fixed-point absolute positioning scheme, but now it just makes no sense.
• curprev 14:3714:37, 11 June 2024‎ imported>WinX64‎ 239,207 bytes +259‎ →‎Login Success: Added clarification to the deprecated field

9 June 2024

• curprev 11:3911:39, 9 June 2024‎ imported>WinX64‎ m 238,948 bytes +5‎ →‎Set Equipment: Typo
• curprev 11:3811:38, 9 June 2024‎ imported>WinX64‎ 238,943 bytes +147‎ →‎Set Equipment: Added missing slot type

6 June 2024

• curprev 16:1216:12, 6 June 2024‎ imported>Norbiros‎ m 238,796 bytes +27‎ Missing information about Transfer
• curprev 00:0400:04, 6 June 2024‎ imported>LassiPulkkinen‎ 238,769 bytes +74‎ →‎Login: The 1.20.6 server is still hardcoded to only send Encryption Request in online mode.