Pre-release protocol

This page documents the changes from the 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.

New Packets

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Changed Packets

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Changed Data Types

-None-

Removed Packets

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. Vanilla packet dump

Protocol History

1.4.6 Pre-release

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.

12w49a

Protocol version is now 50. Packet 0x10 is sent both ways. Packet 0x17 has two new bytes, currently unknown.