Minecraft Forge Handshake - Revision history

imported>ORelio: Document the FML2 handshake protocol for Minecraft 1.13+

2020-08-13T19:07:40Z

Document the FML2 handshake protocol for Minecraft 1.13+

← Older revision	Revision as of 19:07, 13 August 2020
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imported>ORelio: Document the FML2 handshake protocol for Minecraft 1.13+

2020-08-13T19:07:40Z

Document the FML2 handshake protocol for Minecraft 1.13+

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imported>Iceiix: add 1.7.10 ModIdData mapping name discriminator bytes

2019-05-15T16:19:55Z

add 1.7.10 ModIdData mapping name discriminator bytes

← Older revision	Revision as of 16:19, 15 May 2019
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imported>Iceiix: add 1.7.10 ModIdData mapping name discriminator bytes

2019-05-15T16:19:55Z

add 1.7.10 ModIdData mapping name discriminator bytes

← Older revision	Revision as of 16:19, 15 May 2019
(No difference)

imported>Iceiix: add 1.7.10 ModIdData mapping name discriminator bytes

2019-05-15T16:19:55Z

add 1.7.10 ModIdData mapping name discriminator bytes

← Older revision	Revision as of 16:19, 15 May 2019
(No difference)

imported>Iceiix: add 1.7.10 ModIdData mapping name discriminator bytes

2019-05-15T16:19:55Z

add 1.7.10 ModIdData mapping name discriminator bytes

← Older revision		Revision as of 16:19, 15 May 2019
Line 391:		Line 391:
	\| rowspan="2"\|Array		\| rowspan="2"\|Array
	\| String		\| String
	\| Name of the block/item.		\| Name of the block/item. Prefixed with a [https://github.com/MinecraftForge/MinecraftForge/blob/1.7.10/fml/src/main/java/cpw/mods/fml/common/registry/GameData.java#L763-L766 discriminator byte], 01 = block, 02 = item.
	\|-		\|-
	\| ID		\| ID

imported>Iceiix: update for 1.13.2 new server list ping json

2019-05-12T01:26:49Z

update for 1.13.2 new server list ping json

← Older revision	Revision as of 01:26, 12 May 2019
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imported>Iceiix: update for 1.13.2 new server list ping json

2019-05-12T01:26:49Z

update for 1.13.2 new server list ping json

@@ Line 5: / Line 5: @@
 == Changes to [[Server List Ping]] ==
-When forge is installed, the [[Server List Ping]] changes with an additional <code>modinfo</code>.  Example:
+When forge is installed, the [[Server List Ping]] changes with an additional mod information.  Example for 1.13.2:
 <syntaxhighlight lang="javascript">

imported>TimmyRS: /* Definitions */ Fix dead link

2019-03-17T06:09:16Z

Definitions: Fix dead link

← Older revision	Revision as of 06:09, 17 March 2019
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imported>TimmyRS: /* Definitions */ Fix dead link

2019-03-17T06:09:16Z

Definitions: Fix dead link

← Older revision		Revision as of 06:09, 17 March 2019
Line 89:		Line 89:
	Minecraft Forge uses an additional type not covered in [[data types]] for some things -- a varshort. This is essentially the same as a regular short, except that if the top byte (what is normally sign) is set, it is followed by an additional byte. This allows forge to retain backwards compatibility but extend the length of certain numbers -- the varshort is only used in places where, in vanilla Minecraft, the sign bit would not have been set. It is implemented in [https://github.com/MinecraftForge/MinecraftForge/blob/ebe9b6d4cbc4a5281c386994f1fbda04df5d2e1f/src/main/java/net/minecraftforge/fml/common/network/ByteBufUtils.java#L58-L89 ByteBufUtils].		Minecraft Forge uses an additional type not covered in [[data types]] for some things -- a varshort. This is essentially the same as a regular short, except that if the top byte (what is normally sign) is set, it is followed by an additional byte. This allows forge to retain backwards compatibility but extend the length of certain numbers -- the varshort is only used in places where, in vanilla Minecraft, the sign bit would not have been set. It is implemented in [https://github.com/MinecraftForge/MinecraftForge/blob/ebe9b6d4cbc4a5281c386994f1fbda04df5d2e1f/src/main/java/net/minecraftforge/fml/common/network/ByteBufUtils.java#L58-L89 ByteBufUtils].

	Discriminator bytes are the way that Minecraft Forge allows sending multiple messages on one [[plugin channel]]. They aren't part of the original specification, but a similar concept is used with the [~~[Plugin channel~~#MC~~\|AdvCdm\|~~<code>MC\|AdvCdm</code> plugin channel]] (used for command blocks). That packet decides whether a block location is being sent or an entity ID (minecart command blocks) is being sent based off of the value of the first byte in the packet.		Discriminator bytes are the way that Minecraft Forge allows sending multiple messages on one [[plugin channel]]. They aren't part of the original specification, but a similar concept is used with the [https://wiki.vg/index.php?title=Plugin_channels&oldid=14089#MC.7CAdvCmd <code>MC\|AdvCdm</code> plugin channel] (used for command blocks). That packet decides whether a block location is being sent or an entity ID (minecart command blocks) is being sent based off of the value of the first byte in the packet.

	In the same way, forge uses the first byte of the plugin message to specify which packet to use. It uses [https://github.com/MinecraftForge/MinecraftForge/blob/ebe9b6d4cbc4a5281c386994f1fbda04df5d2e1f/src/main/java/net/minecraftforge/fml/common/network/FMLIndexedMessageToMessageCodec.java FMLIndexedMessageToMessageCodec] to automatically switch the value.		In the same way, forge uses the first byte of the plugin message to specify which packet to use. It uses [https://github.com/MinecraftForge/MinecraftForge/blob/ebe9b6d4cbc4a5281c386994f1fbda04df5d2e1f/src/main/java/net/minecraftforge/fml/common/network/FMLIndexedMessageToMessageCodec.java FMLIndexedMessageToMessageCodec] to automatically switch the value.