So I made a packet and a handler for it, and I registered it:

public class EventPacket implements IMessage {

    private EventType type;
    private String[] args;

    private EventPacket() {
        
    }

    public EventPacket(EventType type, String[] args) {
        this.type = type;
        this.args = args;
    }

    @Override
    public void fromBytes(ByteBuf buf) {
        //From bytes
    }

    @Override
    public void toBytes(ByteBuf buf) {
        //To bytes
    }

    public enum EventType {
        BREAK_RELAY
    }

    public static class EventPacketHandler implements IMessageHandler<EventPacket, IMessage> {

        public static final HashMap<EventType, EventReceiver> receivers = new HashMap<>();

        @Override
        public EventPacket onMessage(EventPacket message, MessageContext ctx) {
            //Handler code
            return null;
        }
    }
}

 

INSTANCE.registerMessage(EventPacket.EventPacketHandler.class, EventPacket.class, id++, Side.SERVER);
INSTANCE.registerMessage(EventPacket.EventPacketHandler.class, EventPacket.class, id++, Side.CLIENT);

 

Now when I send the packet from the server to the client I get the following error:

[11:21:48] [Netty Local Client IO #0/ERROR] [FML]: FMLIndexedMessageCodec exception caught
io.netty.handler.codec.DecoderException: java.lang.IllegalAccessException: Class net.minecraftforge.fml.common.network.FMLIndexedMessageToMessageCodec can not access a member of class me.koenn.weapons.networking.EventPacket with modifiers "private"
	at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:99) ~[MessageToMessageDecoder.class:4.0.23.Final]
	at io.netty.handler.codec.MessageToMessageCodec.channelRead(MessageToMessageCodec.java:111) ~[MessageToMessageCodec.class:4.0.23.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:333) [AbstractChannelHandlerContext.class:4.0.23.Final]
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:319) [AbstractChannelHandlerContext.class:4.0.23.Final]
	at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:787) [DefaultChannelPipeline.class:4.0.23.Final]
	at io.netty.channel.embedded.EmbeddedChannel.writeInbound(EmbeddedChannel.java:169) [EmbeddedChannel.class:4.0.23.Final]
	at net.minecraftforge.fml.common.network.internal.FMLProxyPacket.processPacket(FMLProxyPacket.java:109) [FMLProxyPacket.class:?]
	at net.minecraft.network.NetworkManager.channelRead0(NetworkManager.java:156) [NetworkManager.class:?]
	at net.minecraft.network.NetworkManager.channelRead0(NetworkManager.java:51) [NetworkManager.class:?]
	at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:105) [SimpleChannelInboundHandler.class:4.0.23.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:333) [AbstractChannelHandlerContext.class:4.0.23.Final]
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:319) [AbstractChannelHandlerContext.class:4.0.23.Final]
	at net.minecraftforge.fml.common.network.handshake.NetworkDispatcher.handleClientSideCustomPacket(NetworkDispatcher.java:410) [NetworkDispatcher.class:?]
	at net.minecraftforge.fml.common.network.handshake.NetworkDispatcher.channelRead0(NetworkDispatcher.java:276) [NetworkDispatcher.class:?]
	at net.minecraftforge.fml.common.network.handshake.NetworkDispatcher.channelRead0(NetworkDispatcher.java:73) [NetworkDispatcher.class:?]
	at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:105) [SimpleChannelInboundHandler.class:4.0.23.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:333) [AbstractChannelHandlerContext.class:4.0.23.Final]
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:319) [AbstractChannelHandlerContext.class:4.0.23.Final]
	at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:787) [DefaultChannelPipeline.class:4.0.23.Final]
	at io.netty.channel.local.LocalChannel.finishPeerRead(LocalChannel.java:326) [LocalChannel.class:4.0.23.Final]
	at io.netty.channel.local.LocalChannel.access$400(LocalChannel.java:45) [LocalChannel.class:4.0.23.Final]
	at io.netty.channel.local.LocalChannel$5.run(LocalChannel.java:312) [LocalChannel$5.class:4.0.23.Final]
	at io.netty.channel.local.LocalEventLoop.run(LocalEventLoop.java:33) [LocalEventLoop.class:4.0.23.Final]
	at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:116) [SingleThreadEventExecutor$2.class:4.0.23.Final]
	at java.lang.Thread.run(Thread.java:745) [?:1.8.0_101]

 

The weird thing is, I have another packet that I made in the exact same way (I think) and it works fine. 

Does anyone know what I'm doing wrong (probably just a stupid mistake)

11 minutes ago, Koenn said:

[11:21:48] [Netty Local Client IO #0/ERROR] [FML]: FMLIndexedMessageCodec exception caught
io.netty.handler.codec.DecoderException: java.lang.IllegalAccessException: Class net.minecraftforge.fml.common.network.FMLIndexedMessageToMessageCodec can not access a member of class me.koenn.weapons.networking.EventPacket with modifiers "private"

 

 

The EventPacket no-argument constructor is private, but it needs to be public so it can be accessed by FML/Netty.

Quote

can not access a member of class me.koenn.weapons.networking.EventPacket with modifiers "private"

 

1 minute ago, Choonster said:

 

 

The EventPacket no-argument constructor is private, but it needs to be public so it can be accessed by FML/Netty.

 

Oh my god, I'm so stupid. Thanks!!!!