Package net.minecraft.network.message

Class MessageChain

java.lang.Object

net.minecraft.network.message.MessageChain

public class MessageChain
extends Object

A class for handling the "message chain".

A message chain (since 1.19.3) is implemented using an integer that is incremented for each message, called "index". MessageLink represents the link that a particular message has.

Clients signing a message with its preceding message's index is called "packing", and the server creating a signed message with its preceding message's index is called "unpacking". Unpacked messages can then be verified to check the chain's legitimacy.

See Also:

• MessageLink

Mappings:

Namespace	Name
named	net/minecraft/network/message/MessageChain
intermediary	net/minecraft/class_7610
official	yj

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	MessageChain.MessageChainException
static interface	MessageChain.Packer	Packers sign a message on the client with its preceding message's index.
static interface	MessageChain.Unpacker	Unpacker creates a signed message on the server with the server's preceding message index when they receive a message.

Field Summary

Fields

Modifier and Type	Field	Description
(package private) Instant	lastTimestamp
(package private) @Nullable MessageLink	link
(package private) static final Logger	LOGGER

Constructor Summary

Constructors

Constructor	Description
MessageChain(UUID sender, UUID sessionId)

Method Summary

Modifier and Type	Method	Description
MessageChain.Packer	getPacker(Signer signer)
MessageChain.Unpacker	getUnpacker(PlayerPublicKey playerPublicKey)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

LOGGER

static final Logger LOGGER

Mappings:

Namespace	Name	Mixin selector
named	LOGGER	Lnet/minecraft/network/message/MessageChain;LOGGER:Lorg/slf4j/Logger;
intermediary	field_40691	Lnet/minecraft/class_7610;field_40691:Lorg/slf4j/Logger;
official	a	Lyj;a:Lorg/slf4j/Logger;

link

@Nullable
@Nullable MessageLink link

Mappings:

Namespace	Name	Mixin selector
named	link	Lnet/minecraft/network/message/MessageChain;link:Lnet/minecraft/network/message/MessageLink;
intermediary	field_40692	Lnet/minecraft/class_7610;field_40692:Lnet/minecraft/class_7826;
official	b	Lyj;b:Lyk;

lastTimestamp

Instant lastTimestamp

Mappings:

Namespace	Name	Mixin selector
named	lastTimestamp	Lnet/minecraft/network/message/MessageChain;lastTimestamp:Ljava/time/Instant;
intermediary	field_47703	Lnet/minecraft/class_7610;field_47703:Ljava/time/Instant;
official	c	Lyj;c:Ljava/time/Instant;

Constructor Details

MessageChain

public MessageChain(UUID sender,
 UUID sessionId)

Mappings:

Namespace	Name	Mixin selector
named	<init>	Lnet/minecraft/network/message/MessageChain;<init>(Ljava/util/UUID;Ljava/util/UUID;)V
intermediary	<init>	Lnet/minecraft/class_7610;<init>(Ljava/util/UUID;Ljava/util/UUID;)V
official	<init>	Lyj;<init>(Ljava/util/UUID;Ljava/util/UUID;)V

Method Details

getPacker

public MessageChain.Packer getPacker(Signer signer)

Mappings:

Namespace	Name	Mixin selector
named	getPacker	Lnet/minecraft/network/message/MessageChain;getPacker(Lnet/minecraft/network/encryption/Signer;)Lnet/minecraft/network/message/MessageChain$Packer;
intermediary	method_44880	Lnet/minecraft/class_7610;method_44880(Lnet/minecraft/class_7501;)Lnet/minecraft/class_7610$class_7612;
official	a	Lyj;a(Lazn;)Lyj$c;

getUnpacker

public MessageChain.Unpacker getUnpacker(PlayerPublicKey playerPublicKey)

Mappings:

Namespace	Name	Mixin selector
named	getUnpacker	Lnet/minecraft/network/message/MessageChain;getUnpacker(Lnet/minecraft/network/encryption/PlayerPublicKey;)Lnet/minecraft/network/message/MessageChain$Unpacker;
intermediary	method_44874	Lnet/minecraft/class_7610;method_44874(Lnet/minecraft/class_7428;)Lnet/minecraft/class_7610$class_7611;
official	a	Lyj;a(Lcnc;)Lyj$b;