Résolu Envoi de packets en 1.12.2

[zombibi57]

Bonjour,
je suis actuellement sur un mod en 1.12.2 pour un serveur et je cherche comment utiliser un SimpleNetworkWrapper pour envoyer des packets.
Je pense qu’il y a une histoire de proxy, j’ai créé un SimpleNetworkWrapper init dans l’event de preInit, ensuite c’est la preInit du proxy et le CommonNetworkHandler s’init(c’est une classe classe où j’enregistre des packets) :

@SidedProxy(clientSide = References.CLIENT_PROXY, serverSide = References.SERVER_PROXY)
public static ExaCommonProxy proxy;
 
public static SimpleNetworkWrapper NETWORK;
 
@EventHandler
    public void preInit(FMLPreInitializationEvent event) {
        NETWORK = NetworkRegistry.INSTANCE.newSimpleChannel(References.MODID);
 
        proxy.preInit();
 
        CommonNetworkHandler.init();
}

Le CommonNetworkHandler :

public class CommonNetworkHandler {
 
    public static void init()
    {
        ExaMod.NETWORK.registerMessage(PacketExacarb.PacketExacarbHandler.class, PacketExacarb.class, 1, Side.CLIENT);
        ExaMod.NETWORK.registerMessage(CPacketMessage.CPacketMessageHandler.class, CPacketMessage.class, 3, Side.CLIENT);
        ExaMod.NETWORK.registerMessage(CPacketOpenGui.CPacketOpenGuiHandler.class, CPacketOpenGui.class, 5, Side.CLIENT);
        ExaMod.NETWORK.registerMessage(CPacketOpenGuiGuilds.CPacketOpenGuiGuildsHandler.class,CPacketOpenGuiGuilds.class, 9, Side.CLIENT);
 
        ExaMod.NETWORK.registerMessage(PacketSpell.PacketSpellHandler.class, PacketSpell.class, 0, Side.SERVER);
    }
}

Le ClientNetworkHandler(la classe des packets destinés au serveur seulement) :

public class ClientNetworkHandler {
	
	public static void init()
	{
		ExaMod.NETWORK.registerMessage(SPacketMessage.SPacketMessageHandler.class, SPacketMessage.class, 4, Side.SERVER);
		ExaMod.NETWORK.registerMessage(SPacketShopBuy.SPacketShopBuyHandler.class, SPacketShopBuy.class, 6, Side.SERVER);
		ExaMod.NETWORK.registerMessage(SPacketShopSell.SPacketShopSellHandler.class, SPacketShopSell.class, 7, Side.SERVER);
		ExaMod.NETWORK.registerMessage(SPacketShopNumberItem.SPacketShopNumberItemHandler.class, SPacketShopNumberItem.class, 8, Side.SERVER);
	}
 
}

Pourrez vous m’aidez svp ?

[robin4002]

Bonsoir,

Ce tutoriel est valide pour la 1.12.2 : https://www.minecraftforgefrance.fr/topic/1000/1-7-2-le-network

Tes paquets doivent toujours être sur les deux sides, il n’y a aucune raison d’avoir des paquets “serveur uniquement” (à la limiter, c’est l’handler du paquet qui va être exécuté que d’un côté, mais le code du paquet doit être sur les deux, car le client doit savoir comment sérialiser le contenu du paquet)

[zombibi57]

@robin4002 d’accord merci, où je devrais init chaque networkHandler ? Dans le CommonProxy tous les deux ? La classe principale ou le client proxy/server proxy ?

[robin4002]

Tu ne devrais avoir qu’un seul network handler, qui est initialisé dans ou depuis la classe principale.

[zombibi57]

@robin4002 c’est quand même étrange que quand je lance mon serveur local (Mohist) j’ai un crash au niveau de certains packets(ici un packet qui ouvre un gui lorsqu’il est reçu par le client) :

---- Rapport de plantage de Mohist ----
 
 
Temps: 24/11/20 21:17
Description: Erreur dans la boucle de tick du serveur
 
net.minecraftforge.fml.common.LoaderExceptionModCrash: Caught exception from ExaMod (examod)
Caused by: java.lang.NoClassDefFoundError: net/minecraft/client/gui/GuiScreen
	at java.lang.Class.getDeclaredConstructors0(Native Method)
	at java.lang.Class.privateGetDeclaredConstructors(Unknown Source)
	at java.lang.Class.getConstructor0(Unknown Source)
	at java.lang.Class.newInstance(Unknown Source)
	at net.minecraftforge.fml.common.network.simpleimpl.SimpleNetworkWrapper.instantiate(SimpleNetworkWrapper.java:163)
	at net.minecraftforge.fml.common.network.simpleimpl.SimpleNetworkWrapper.registerMessage(SimpleNetworkWrapper.java:156)
	at fr.exatium.examod.ExaMod.preInit(ExaMod.java:90)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at net.minecraftforge.fml.common.FMLModContainer.handleModStateEvent(FMLModContainer.java:632)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at com.google.common.eventbus.Subscriber.invokeSubscriberMethod(Subscriber.java:91)
	at com.google.common.eventbus.Subscriber$SynchronizedSubscriber.invokeSubscriberMethod(Subscriber.java:150)
	at com.google.common.eventbus.Subscriber$1.run(Subscriber.java:76)
	at com.google.common.util.concurrent.MoreExecutors$DirectExecutor.execute(MoreExecutors.java:399)
	at com.google.common.eventbus.Subscriber.dispatchEvent(Subscriber.java:71)
	at com.google.common.eventbus.Dispatcher$PerThreadQueuedDispatcher.dispatch(Dispatcher.java:116)
	at com.google.common.eventbus.EventBus.post(EventBus.java:217)
	at net.minecraftforge.fml.common.LoadController.sendEventToModContainer(LoadController.java:215)
	at net.minecraftforge.fml.common.LoadController.propogateStateMessage(LoadController.java:193)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at com.google.common.eventbus.Subscriber.invokeSubscriberMethod(Subscriber.java:91)
	at com.google.common.eventbus.Subscriber$SynchronizedSubscriber.invokeSubscriberMethod(Subscriber.java:150)
	at com.google.common.eventbus.Subscriber$1.run(Subscriber.java:76)
	at com.google.common.util.concurrent.MoreExecutors$DirectExecutor.execute(MoreExecutors.java:399)
	at com.google.common.eventbus.Subscriber.dispatchEvent(Subscriber.java:71)
	at com.google.common.eventbus.Dispatcher$PerThreadQueuedDispatcher.dispatch(Dispatcher.java:116)
	at com.google.common.eventbus.EventBus.post(EventBus.java:217)
	at net.minecraftforge.fml.common.LoadController.distributeStateMessage(LoadController.java:132)
	at net.minecraftforge.fml.common.Loader.preinitializeMods(Loader.java:635)
	at net.minecraftforge.fml.server.FMLServerHandler.beginServerLoading(FMLServerHandler.java:102)
	at net.minecraftforge.fml.common.FMLCommonHandler.onServerStart(FMLCommonHandler.java:329)
	at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:171)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:593)
	at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.ClassNotFoundException: net.minecraft.client.gui.GuiScreen
	at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	... 43 more
Caused by: net.minecraftforge.fml.common.asm.ASMTransformerWrapper$TransformerException: Exception in class transformer net.minecraftforge.fml.common.asm.transformers.SideTransformer@4f7dc426 from coremod FMLCorePlugin
	at net.minecraftforge.fml.common.asm.ASMTransformerWrapper$TransformerWrapper.transform(ASMTransformerWrapper.java:256)
	at net.minecraft.launchwrapper.LaunchClassLoader.runTransformers(LaunchClassLoader.java:279)
	at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:176)
	... 45 more
Caused by: java.lang.RuntimeException: Attempted to load class blk for invalid side SERVER
	at net.minecraftforge.fml.common.asm.transformers.SideTransformer.transform(SideTransformer.java:60)
	at net.minecraftforge.fml.common.asm.ASMTransformerWrapper$TransformerWrapper.transform(ASMTransformerWrapper.java:252)
	... 47 more
 
 
Une description détaillée de l'erreur, de son chemin de code et de tous les détails connus suivent:
---------------------------------------------------------------------------------------
 
-- Détails du système --
Details:
	Version de Mohist: 1.12.2-102
	Système d'Exploitation: Windows 10 (amd64) version 10.0
	Version de Java: 1.8.0_271, Oracle Corporation
	Version de Java VM: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Mémoire: 197394624 bytes (188 MB) / 433586176 bytes (413 MB) up to 954728448 bytes (910 MB)
	Drapeaux JVM: 1 total; -Xmx1G
	IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
	Information de CraftBukkit: 
   Running: 
   Failed to handle CraftCrashReport: craftbukkit not runs
 
	FML: MCP 9.42 Powered by Forge 14.23.5.2854 6 mods loaded, 6 mods active
	States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored
 
	| State | ID        | Version      | Source        | Signature |
	|:----- |:--------- |:------------ |:------------- |:--------- |
	| LCH   | minecraft | 1.12.2       | minecraft.jar | None      |
	| LCH   | mcp       | 9.42         | minecraft.jar | None      |
	| LCH   | mohist    | 1.12.2-102   | mohist.jar    | None      |
	| LCH   | FML       | 8.0.99.99    | Mohist.jar    | None      |
	| LCH   | forge     | 14.23.5.2854 | Mohist.jar    | None      |
	| LCE   | examod    | 1.0          | Examod.jar    | None      |
 
	Loaded coremods (and transformers): 
	Profiler Position: N/A (disabled)
	Is Modded: Definitely; Server brand changed to 'Mohist'
	Type: Dedicated Server (map_server.txt)

[robin4002]

Il faut mettre un SideOnly(Side.CLIENT) au dessus de la fonction onMessage de ton handler, dans le cas des paquets envoyé au client.

[zombibi57]

Merci beaucoup ^^ le problème est résolu !