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[1.19.3] Capabilities - Unknown custom packet but working


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I'm getting Unknown custom packet identifier: argonauts:simple_channel but when i send the packet it works. After some search, the problem could be the symmetry of encoding and decoding but even after writing a simple buf.readInt() and buf.writeInt() i also get the message.


Also, i'm sending an nbt with my packet. I've seen that it exist buf.writerIndex() but don't know how to correctly use it. (Show i just use index + 1 each time i had something, or should i use an other number ?) Could i add multiple data in one buffer ?


I'm send that packet each tick when i refill the mana capability of the player.


Here is the source of my packet : https://github.com/Ddasb/argonauts/blob/master/src/main/java/com/kiuseii/argonauts/network/packets/AttributesDataSyncS2CPacket.java

Source of my capability : https://github.com/Ddasb/argonauts/blob/master/src/main/java/com/kiuseii/argonauts/capabilities/attributes/AttributesCapability.java

My Packet handler : https://github.com/Ddasb/argonauts/blob/master/src/main/java/com/kiuseii/argonauts/network/PacketHandler.java

Where i refill the mana  https://github.com/Ddasb/argonauts/blob/master/src/main/java/com/kiuseii/argonauts/events/ModEvents.java


Thanks for the help provided

Edited by Kiuseii
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  • Kiuseii changed the title to [1.19.3] Capabilities - Unknown custom packet but working

using your code i fix mi issue 
in your code i dont see the problem but the way is structured is way different from the mine 



	private void commonSetup(final FMLCommonSetupEvent event) {




			package merctool.networking;				
			import net.minecraft.resources.ResourceLocation;
		import net.minecraft.server.level.ServerPlayer;
		import net.minecraftforge.network.NetworkDirection;
		import net.minecraftforge.network.NetworkRegistry;
		import net.minecraftforge.network.PacketDistributor;
		import net.minecraftforge.network.simple.SimpleChannel;
		import merctool.merctool;				
			public class ModMessage{				
			     private static SimpleChannel INSTANCE;
		     private static int packetId = 0;
		     private static int id() {
		         return packetId ++;
		     public static void register() {
		         SimpleChannel net = NetworkRegistry.ChannelBuilder
		                 .named(new ResourceLocation( merctool.MOD_ID, "messages"))
		         .networkProtocolVersion(() -> "1.0")
		         .clientAcceptedVersions(s -> true)
		         .serverAcceptedVersions(s -> true)
		         INSTANCE = net;
		            net.messageBuilder(onmousedown_middle.class, id(), NetworkDirection.PLAY_TO_SERVER)
		            net.messageBuilder(onmouseup_middle.class, id(), NetworkDirection.PLAY_TO_SERVER)
		            net.messageBuilder(onmousedown_left.class, id(), NetworkDirection.PLAY_TO_SERVER)
		            net.messageBuilder(onmouseup_left.class, id(), NetworkDirection.PLAY_TO_SERVER)
		     public static <MSG> void sendToServer(MSG message) {
		     public static <MSG> void sendToPlayer(MSG message, ServerPlayer pe) {
		         INSTANCE.send( PacketDistributor.PLAYER.with( () -> pe),  message) ;




			package merctool.networking;				
			import net.minecraft.nbt.CompoundTag;
		import net.minecraft.network.FriendlyByteBuf;
		import net.minecraft.server.level.ServerLevel;
		import net.minecraft.server.level.ServerPlayer;
		import net.minecraft.world.entity.EntityType;
		import net.minecraft.world.entity.MobSpawnType;
		import net.minecraftforge.network.NetworkEvent;				
			import java.util.function.Supplier;				
			public class onmouseup_middle {
		    private int val0 = 0;
		    private int val1 = 0;
		    public onmouseup_middle(int val0, int val1) {
		        this.val0 = val0;
		        this.val1 = val1;
			    public onmouseup_middle(FriendlyByteBuf buf) {
		         CompoundTag nbt = buf.readNbt();
		        this.val0 = nbt.getInt("val0");
		        this.val1 = nbt.getInt("val1");				
			    public void toBytes(FriendlyByteBuf buf) {
		        CompoundTag nbt = new CompoundTag();
		        nbt.putInt("val0", val0);
		        nbt.putInt("val1", val1);
			    public boolean handle(Supplier<NetworkEvent.Context> supplier) {
		        NetworkEvent.Context context = supplier.get();
		        context.enqueueWork(() -> {
		            // HERE WE ARE ON THE SERVER!
		            ServerPlayer player = context.getSender();
		            ServerLevel level = player.getLevel();
		            System.out.println("Package recived");
		            System.out.println("val0=" + val0);
		            System.out.println("val1=" + val1);
		            //EntityType.COW.spawn(level, null, null, player.blockPosition(),
		                   //MobSpawnType.COMMAND, true, false);
		        return true;


i send the event whit 

ModMessage.sendToServer(new onmouseup_middle(3,7));


mi code actually does nothing just send two numbers on middle click 



	[07:50:01] [Render thread/INFO] [minecraft/ChatComponent]: [System] [CHAT] Drinking WATA
	Package recived
	[07:50:01] [Render thread/INFO] [minecraft/ChatComponent]: [System] [CHAT] Drinking WATA
	Package recived
	[07:50:01] [Render thread/INFO] [minecraft/ChatComponent]: [System] [CHAT] Drinking WATA
	Package recived
	[07:50:01] [Render thread/INFO] [minecraft/ChatComponent]: [System] [CHAT] Drinking WATA
	Package recived
	[07:50:06] [Server thread/INFO] [minecraft/IntegratedServer]: Saving and pausing game...



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