Is there any way to send an object by IMessage？

themaw · October 24, 2018

As what I say.

I want to send an Customobject by Imessage.But I have no idea.

themaw · October 24, 2018

package mawmanager.maw.GUI.CheckSystem.IMessage.Client;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;

import io.netty.buffer.ByteBuf;
import mawmanager.maw.GUI.CheckSystem.PlayerModDataForCheck;
import net.minecraftforge.fml.common.network.simpleimpl.IMessage;

public class PlayerModDataForCheckSender implements IMessage{
	
	public PlayerModDataForCheck data;
	
	public PlayerModDataForCheckSender(PlayerModDataForCheck da) {
		this.data = da;
	}
	
	@Override
	public void fromBytes(ByteBuf buf) {
		try{
	ByteArrayOutputStream b1 = new ByteArrayOutputStream();
	ObjectOutputStream b2 = new ObjectOutputStream(b1);
	b2.writeObject(data);
	buf.writeBytes(b1.toByteArray());
		}catch(IOException e) {
	e.printStackTrace();
	}
	}
	

	@Override
	public void toBytes(ByteBuf buf) {
		// TODO Auto-generated method stub
		byte[] bytes;
		int offset;
		int length = buf.readableBytes();
		    bytes = new byte[length];
		    buf.readBytes(bytes);
		try {
			ByteArrayInputStream b1 = new ByteArrayInputStream(bytes);
			ObjectInputStream b2 = new ObjectInputStream(b1);
			this.data = (PlayerModDataForCheck)b2.readObject();
		} catch (IOException | ClassNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}
}

This is what I do,but it will throw an error.

themaw · October 24, 2018

PlayerModDataForCheck is the custom object.

Cadiboo · October 24, 2018

NBT or JSON

themaw · October 24, 2018

33 minutes ago, Cadiboo said:

NBT or JSON

Thank you for your answer.But I'm not code a tileentity.

I'm modding a check system with simplempl.

Edited October 24, 2018 by themaw

Cadiboo · October 24, 2018

NBT - Notated Binary Tags

JSON - JavaScript Object Notation

They’re both ways of turning Objects into Strings for transport/saving. You asked how to send an object over the network?

themaw · October 24, 2018

Yes

Edited October 24, 2018 by themaw

themaw · October 24, 2018

2 minutes ago, Cadiboo said:

NBT - Notated Binary Tags

JSON - JavaScript Object Notation

They’re both ways of turning Objects into Strings for transport/saving. You asked how to send an object over the network?

yes

Cadiboo · October 24, 2018

Can you explain in more detail what your trying to do?

themaw · October 24, 2018

36 minutes ago, Cadiboo said:

Can you explain in more detail what your trying to do?

Sure:

This is a check system.

When the player login in a server,it will call this event at the server:

	@SubscribeEvent
	@SideOnly(Side.SERVER)
	public void playerlogeve(PlayerLoggedInEvent e)throws IOException {
		System.out.println("Start Check "+e.player.getName());
		Thread t1 = new Thread(new Runnable() {
			
			@Override
			public void run() {
				// TODO Auto-generated method stub
				Main.CustomMPL.sendTo(new PlayerCheckTaskSender(), (EntityPlayerMP) e.player);
				
			}
		});
		t1.start();
		}

The Main.CustomMPL at the Main Class is:

public static final SimpleNetworkWrapper CustomMPL= NetworkRegistry.INSTANCE.newSimpleChannel(Info.modid);

Info.modid is just a string.

And this is the PlayerCheckTashSender():

public class PlayerCheckTaskSender implements IMessage{

	@Override
	public void fromBytes(ByteBuf buf) {
		// TODO Auto-generated method stub
		
	}

	@Override
	public void toBytes(ByteBuf buf) {
		// TODO Auto-generated method stub
		
	}

	
}

And the client handler is like this:

public class ClientCheckMessageListener implements IMessageHandler<PlayerCheckTaskSender, PlayerModDataForCheckSender>{

	@Override
	public PlayerModDataForCheckSender onMessage(final PlayerCheckTaskSender message, MessageContext ctx) {
		Void.getThreadListener(ctx).addScheduledTask(new Runnable(){

			@Override
			public void run() {
				
			}
		});
		return new PlayerModDataForCheckSender(CheckSystem.getCopyofCurrectList());
	}

}

And this client handler will return A Imessage like this:

package mawmanager.maw.GUI.CheckSystem.IMessage.Client;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;

import io.netty.buffer.ByteBuf;
import mawmanager.maw.GUI.CheckSystem.PlayerModDataForCheck;
import net.minecraftforge.fml.common.network.simpleimpl.IMessage;

public class PlayerModDataForCheckSender implements IMessage{
	
	public PlayerModDataForCheck data;
	
	public PlayerModDataForCheckSender(PlayerModDataForCheck da) {
		this.data = da;
	}
	
	@Override
	public void fromBytes(ByteBuf buf) {
		try{
	ByteArrayOutputStream b1 = new ByteArrayOutputStream();
	ObjectOutputStream b2 = new ObjectOutputStream(b1);
	b2.writeObject(data);
	buf.writeBytes(b1.toByteArray());
		}catch(IOException e) {
	e.printStackTrace();
	}
	}
	

	@Override
	public void toBytes(ByteBuf buf) {
		// TODO Auto-generated method stub
		byte[] bytes;
		int offset;
		int length = buf.readableBytes();
		    bytes = new byte[length];
		    buf.readBytes(bytes);
		try {
			ByteArrayInputStream b1 = new ByteArrayInputStream(bytes);
			ObjectInputStream b2 = new ObjectInputStream(b1);
			this.data = (PlayerModDataForCheck)b2.readObject();
		} catch (IOException | ClassNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}
}

And this is my PlayerModDataForCheck.Class

package mawmanager.maw.GUI.CheckSystem;

import java.io.Serializable;
import java.util.List;

public class PlayerModDataForCheck implements Serializable{
	private int randomcode = 0;
	private List<Integer> hashes = null;
	private List<String> ids = null;
	/*private int randomcode ;*/
	public PlayerModDataForCheck(List<Integer> i1,List<String> i2) {
		this.hashes = i1;
		this.ids = i2;
		/*this.randomcode = randomc;*/
	}
	
	public PlayerModDataForCheck(List<Integer> i1,List<String> i2,int i3) {
		this.hashes = i1;
		this.ids = i2;
		this.randomcode = i3;
		/*this.randomcode = randomc;*/
	}
	
	public boolean RandomCodeCompare(int i) {
		return i == randomcode;
	}
	
	public PlayerModDataForCheck getCopies() {
		return new PlayerModDataForCheck(this.hashes,this.ids);
	}
	
	protected boolean isEmpty() {
		if(hashes == null|| ids == null)return true; 
		try{if(hashes.size()>0&&ids.size()>0)return false;
		return true;
		}
		catch(Exception e ) {
			return true;
		}
	}
	
	
	protected List<Integer> gethashes() {
		return hashes;
	}
	
	protected List<String> getids() {
		return ids;
	}
	
	protected boolean whetherSubset(PlayerModDataForCheck p) {
		
		if(isEmpty())return true;
		try{
			List<Integer> hashI = p.gethashes();
			List<String> modidI = p.getids();

		for(int i:hashes) {
			boolean isinlist = false;
			for(int i2:hashI) {
				if(i2==i) {isinlist = true;break;}
			}
			if(!isinlist)return false;
		}
		
		for(String i:ids) {
			boolean isinlist = false;
			for(String i2:modidI) {
				if(i2.equals(i)) {isinlist = true;break;}
			}
			if(!isinlist)return false;
		}
		
		
		return true;
		}catch(Exception e) {
			System.out.print(e.getMessage());
			return false;
		}
	
	}
	
	
	/*protected int getradomcode() {
		return this.randomcode;
	}*/

}

Finally is the server side handler:

	@Override
	public IMessage onMessage(final PlayerModDataForCheckSender message, MessageContext ctx) {
		Void.getThreadListener(ctx).addScheduledTask(new Runnable(){

			@Override
			public void run() {
				
				if(message == null||!CheckSystem.check(message.data,ctx.getServerHandler().player.getName())) {
					ctx.getServerHandler().disconnect(new TextComponentString(ChecksystemInfo.kickmessage));
					System.out.println(ctx.getServerHandler().player.getName() + "Has beeen kicked");
				
			}
			
		}
		});
		// TODO Auto-generated method stub
		return null;
	}

And the problem is my custom Imessage Class:

When the void tobytes() which I Overrided is being called,it will appear a java.io.EOFException

at this line ObjectInputStream b2 = new ObjectInputStream(b1);
Or this.data = (PlayerModDataForCheck)b2.readObject();

(Sorry for my poor english)

jabelar · October 24, 2018

Basically, the "payload" you put into an IMessage is up to you. It is just a series of bytes that represents something. As long as you take the bytes out in the same order as you put them in then you have successfully transmitted the data.

So then it depends on how complicated the object is. If it contains collections of other objects it could get pretty complicated, but still doable if you just take your time to think about the order things get written to the buffer. If your object has simple fields then it is super easy -- just add them to the buffer and read them back in the same order.

There is nothing special about IMessage really -- it just takes a buffer full of bytes and gets them on and off the network. Up to you what you do with those bytes.

IMPORTANT: You're never really "sending the object" but instead you're sending enough information to recreate the object (or sync it if it already exists). Technically there are two objects, one on each side of the connection and the packets are making sure they have the same data.

Edited October 24, 2018 by jabelar

themaw · October 25, 2018

On 10/24/2018 at 3:50 PM, diesieben07 said:

Do not use Java's native serialization (ObjectInputStream, ObjectOutputStream). It's god-awfully slow, cumbersome and just overall terrible.

How to send an object depends on what kind of functionality that object has. If it's simply a data bag (or "POJO"), simply recursively decompose it until you're at the primitive level: Go through all properties of the object. Is it a primitive or a String? Okay, write it to the stream. Is it a collection? Okay, write it's contents to the stream (including length, usually). Is it another POJO? Okay, write it to the stream in the same manner described.

If your object is something like a Block or any other IForgeRegistryEntry, you need to use the helper methods in ByteBufUtils (writeRegistryEntry and friends).

22 hours ago, jabelar said:

Basically, the "payload" you put into an IMessage is up to you. It is just a series of bytes that represents something. As long as you take the bytes out in the same order as you put them in then you have successfully transmitted the data.

So then it depends on how complicated the object is. If it contains collections of other objects it could get pretty complicated, but still doable if you just take your time to think about the order things get written to the buffer. If your object has simple fields then it is super easy -- just add them to the buffer and read them back in the same order.

There is nothing special about IMessage really -- it just takes a buffer full of bytes and gets them on and off the network. Up to you what you do with those bytes.

IMPORTANT: You're never really "sending the object" but instead you're sending enough information to recreate the object (or sync it if it already exists). Technically there are two objects, one on each side of the connection and the packets are making sure they have the same data.

Thank you for your answer.

Can you give me a example that

How to send both a List<String> and a List<Integer> through Imessage?

If i do like this,

At the PlayerModDataForCheckSender.class:

public void writeToByteBuf(ByteBuf b) {
        int modidsl1 = ids.size();
        int hashesl1 = hashes.size();
        
        
        b.writeInt(modidsl1);
        for(String s : ids) 
        ByteBufUtils.writeUTF8String(b, s);
        
        b.writeInt(hashesl1);
        for(int i :hashes) {
            b.writeInt(i);
        }
        
    }
    
    public static PlayerModDataForCheck readFromByteBuf(ByteBuf b) {
        int modidsl1 = b.readInt();
        List<String> modidsread = new LinkedList<String>();
        for(int i = 0;i<modidsl1;i++)
        modidsread.add(ByteBufUtils.readUTF8String(b));
        
        int hashesl1 = b.readInt();
        List<Integer> hashesread = new LinkedList<Integer>();
        for(int i = 0;i<hashesl1;i++) {
        hashesread.add(b.readInt());
        }
        
        return new PlayerModDataForCheck(hashesread,modidsread);
    
    }
                                      
The Imessage:
                                      public class PlayerModDataForCheckSender implements IMessage{
	
	public PlayerModDataForCheck data;
	
	public PlayerModDataForCheckSender(PlayerModDataForCheck da) {
		this.data = da;
	}
	
	@Override
	public void fromBytes(ByteBuf buf) {
		data.writeToByteBuf(buf);
		
	}
	

	@Override
	public void toBytes(ByteBuf buf) {
		data = PlayerModDataForCheck.readFromByteBuf(buf);
	}
}

I will get this:

21:23:43] [Netty Client IO #0/ERROR] [FML]: There was a critical exception handling a packet on channel mawgui
io.netty.handler.codec.EncoderException: java.lang.IndexOutOfBoundsException: readerIndex(0) + length(4) exceeds writerIndex(1): UnpooledByteBufAllocator$InstrumentedUnpooledUnsafeHeapByteBuf(ridx: 0, widx: 1, cap: 256)
   at io.netty.handler.codec.MessageToMessageEncoder.write(MessageToMessageEncoder.java:106) ~[MessageToMessageEncoder.class:4.1.9.Final]
   at io.netty.handler.codec.MessageToMessageCodec.write(MessageToMessageCodec.java:116) ~[MessageToMessageCodec.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:738) ~[AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.invokeWriteAndFlush(AbstractChannelHandlerContext.java:801) ~[AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:814) ~[AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.writeAndFlush(AbstractChannelHandlerContext.java:794) ~[AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.writeAndFlush(AbstractChannelHandlerContext.java:831) ~[AbstractChannelHandlerContext.class:4.1.9.Final]
   at net.minecraftforge.fml.common.network.simpleimpl.SimpleChannelHandlerWrapper.channelRead0(SimpleChannelHandlerWrapper.java:60) ~[SimpleChannelHandlerWrapper.class:?]
   at net.minecraftforge.fml.common.network.simpleimpl.SimpleChannelHandlerWrapper.channelRead0(SimpleChannelHandlerWrapper.java:36) ~[SimpleChannelHandlerWrapper.class:?]
   at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:105) ~[SimpleChannelInboundHandler.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) ~[AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) ~[AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340) ~[AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:102) ~[MessageToMessageDecoder.class:4.1.9.Final]
   at io.netty.handler.codec.MessageToMessageCodec.channelRead(MessageToMessageCodec.java:111) ~[MessageToMessageCodec.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) ~[AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) ~[AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340) ~[AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1334) ~[DefaultChannelPipeline$HeadContext.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) ~[AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) ~[AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:926) ~[DefaultChannelPipeline.class:4.1.9.Final]
   at io.netty.channel.embedded.EmbeddedChannel.writeInbound(EmbeddedChannel.java:274) ~[EmbeddedChannel.class:4.1.9.Final]
   at net.minecraftforge.fml.common.network.internal.FMLProxyPacket.processPacket(FMLProxyPacket.java:108) [FMLProxyPacket.class:?]
   at net.minecraft.network.NetworkManager.channelRead0(NetworkManager.java:155) [NetworkManager.class:?]
   at net.minecraft.network.NetworkManager.channelRead0(NetworkManager.java:49) [NetworkManager.class:?]
   at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:105) [SimpleChannelInboundHandler.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) [AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) [AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340) [AbstractChannelHandlerContext.class:4.1.9.Final]
   at net.minecraftforge.fml.common.network.handshake.NetworkDispatcher.handleClientSideCustomPacket(NetworkDispatcher.java:409) [NetworkDispatcher.class:?]
   at net.minecraftforge.fml.common.network.handshake.NetworkDispatcher.channelRead0(NetworkDispatcher.java:274) [NetworkDispatcher.class:?]
   at net.minecraftforge.fml.common.network.handshake.NetworkDispatcher.channelRead0(NetworkDispatcher.java:74) [NetworkDispatcher.class:?]
   at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:105) [SimpleChannelInboundHandler.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) [AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) [AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340) [AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:293) [ByteToMessageDecoder.class:4.1.9.Final]
   at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:267) [ByteToMessageDecoder.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) [AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) [AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340) [AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:293) [ByteToMessageDecoder.class:4.1.9.Final]
   at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:267) [ByteToMessageDecoder.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) [AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) [AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340) [AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:293) [ByteToMessageDecoder.class:4.1.9.Final]
   at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:267) [ByteToMessageDecoder.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) [AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) [AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340) [AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.handler.timeout.IdleStateHandler.channelRead(IdleStateHandler.java:287) [IdleStateHandler.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) [AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) [AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340) [AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1334) [DefaultChannelPipeline$HeadContext.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) [AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) [AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:926) [DefaultChannelPipeline.class:4.1.9.Final]
   at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:134) [AbstractNioByteChannel$NioByteUnsafe.class:4.1.9.Final]
   at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:624) [NioEventLoop.class:4.1.9.Final]
   at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:559) [NioEventLoop.class:4.1.9.Final]
   at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:476) [NioEventLoop.class:4.1.9.Final]
   at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:438) [NioEventLoop.class:4.1.9.Final]
   at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:858) [SingleThreadEventExecutor$5.class:4.1.9.Final]
   at java.lang.Thread.run(Unknown Source) [?:1.8.0_121]

themaw · October 25, 2018

1 hour ago, diesieben07 said:

This is backwards. You are trying to write data in fromBytes and trying to read data in toBytes.

Oh.....I finally noticed the problem and corrected it and a new error has arisen

Quote

[23:36:53] [Netty Server IO #2/ERROR] [FML]: SimpleChannelHandlerWrapper exception
io.netty.handler.codec.DecoderException: java.lang.InstantiationException: mawmanager.maw.GUI.CheckSystem.IMessage.Client.PlayerModDataForCheckSender
   at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:98) ~[MessageToMessageDecoder.class:4.1.9.Final]
   at io.netty.handler.codec.MessageToMessageCodec.channelRead(MessageToMessageCodec.java:111) ~[MessageToMessageCodec.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) [AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) [AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340) [AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1334) [DefaultChannelPipeline$HeadContext.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) [AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) [AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:926) [DefaultChannelPipeline.class:4.1.9.Final]
   at io.netty.channel.embedded.EmbeddedChannel.writeInbound(EmbeddedChannel.java:274) [EmbeddedChannel.class:4.1.9.Final]
   at net.minecraftforge.fml.common.network.internal.FMLProxyPacket.processPacket(FMLProxyPacket.java:108) [FMLProxyPacket.class:?]
   at net.minecraft.network.NetworkManager.channelRead0(NetworkManager.java:155) [NetworkManager.class:?]
   at net.minecraft.network.NetworkManager.channelRead0(NetworkManager.java:49) [NetworkManager.class:?]
   at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:105) [SimpleChannelInboundHandler.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) [AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) [AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340) [AbstractChannelHandlerContext.class:4.1.9.Final]
   at net.minecraftforge.fml.common.network.handshake.NetworkDispatcher.handleServerSideCustomPacket(NetworkDispatcher.java:448) [NetworkDispatcher.class:?]
   at net.minecraftforge.fml.common.network.handshake.NetworkDispatcher.channelRead0(NetworkDispatcher.java:270) [NetworkDispatcher.class:?]
   at net.minecraftforge.fml.common.network.handshake.NetworkDispatcher.channelRead0(NetworkDispatcher.java:74) [NetworkDispatcher.class:?]
   at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:105) [SimpleChannelInboundHandler.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) [AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) [AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340) [AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:293) [ByteToMessageDecoder.class:4.1.9.Final]
   at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:267) [ByteToMessageDecoder.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) [AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) [AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340) [AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:293) [ByteToMessageDecoder.class:4.1.9.Final]
   at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:267) [ByteToMessageDecoder.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) [AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) [AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340) [AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:293) [ByteToMessageDecoder.class:4.1.9.Final]
   at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:267) [ByteToMessageDecoder.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) [AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) [AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340) [AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.handler.timeout.IdleStateHandler.channelRead(IdleStateHandler.java:287) [IdleStateHandler.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) [AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) [AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340) [AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1334) [DefaultChannelPipeline$HeadContext.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) [AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) [AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:926) [DefaultChannelPipeline.class:4.1.9.Final]
   at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:134) [AbstractNioByteChannel$NioByteUnsafe.class:4.1.9.Final]
   at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:624) [NioEventLoop.class:4.1.9.Final]
   at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:559) [NioEventLoop.class:4.1.9.Final]
   at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:476) [NioEventLoop.class:4.1.9.Final]
   at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:438) [NioEventLoop.class:4.1.9.Final]
   at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:858) [SingleThreadEventExecutor$5.class:4.1.9.Final]
   at java.lang.Thread.run(Unknown Source) [?:1.8.0_121]
Caused by: java.lang.InstantiationException: mawmanager.maw.GUI.CheckSystem.IMessage.Client.PlayerModDataForCheckSender
   at java.lang.Class.newInstance(Unknown Source) ~[?:1.8.0_121]
   at net.minecraftforge.fml.common.network.FMLIndexedMessageToMessageCodec.decode(FMLIndexedMessageToMessageCodec.java:101) ~[FMLIndexedMessageToMessageCodec.class:?]
   at net.minecraftforge.fml.common.network.FMLIndexedMessageToMessageCodec.decode(FMLIndexedMessageToMessageCodec.java:40) ~[FMLIndexedMessageToMessageCodec.class:?]
   at io.netty.handler.codec.MessageToMessageCodec$2.decode(MessageToMessageCodec.java:81) ~[MessageToMessageCodec$2.class:4.1.9.Final]
   at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:88) ~[MessageToMessageDecoder.class:4.1.9.Final]
   ... 53 more
Caused by: java.lang.NoSuchMethodException: mawmanager.maw.GUI.CheckSystem.IMessage.Client.PlayerModDataForCheckSender.<init>()
   at java.lang.Class.getConstructor0(Unknown Source) ~[?:1.8.0_121]
   at java.lang.Class.newInstance(Unknown Source) ~[?:1.8.0_121]
   at net.minecraftforge.fml.common.network.FMLIndexedMessageToMessageCodec.decode(FMLIndexedMessageToMessageCodec.java:101) ~[FMLIndexedMessageToMessageCodec.class:?]
   at net.minecraftforge.fml.common.network.FMLIndexedMessageToMessageCodec.decode(FMLIndexedMessageToMessageCodec.java:40) ~[FMLIndexedMessageToMessageCodec.class:?]
   at io.netty.handler.codec.MessageToMessageCodec$2.decode(MessageToMessageCodec.java:81) ~[MessageToMessageCodec$2.class:4.1.9.Final]
   at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:88) ~[MessageToMessageDecoder.class:4.1.9.Final]
   ... 53 more
[23:36:53] [Netty Server IO #2/ERROR] [FML]: There was a critical exception handling a packet on channel mawgui
io.netty.handler.codec.DecoderException: java.lang.InstantiationException: mawmanager.maw.GUI.CheckSystem.IMessage.Client.PlayerModDataForCheckSender
   at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:98) ~[MessageToMessageDecoder.class:4.1.9.Final]
   at io.netty.handler.codec.MessageToMessageCodec.channelRead(MessageToMessageCodec.java:111) ~[MessageToMessageCodec.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) ~[AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) ~[AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340) ~[AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1334) ~[DefaultChannelPipeline$HeadContext.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) ~[AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) ~[AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:926) ~[DefaultChannelPipeline.class:4.1.9.Final]
   at io.netty.channel.embedded.EmbeddedChannel.writeInbound(EmbeddedChannel.java:274) ~[EmbeddedChannel.class:4.1.9.Final]
   at net.minecraftforge.fml.common.network.internal.FMLProxyPacket.processPacket(FMLProxyPacket.java:108) [FMLProxyPacket.class:?]
   at net.minecraft.network.NetworkManager.channelRead0(NetworkManager.java:155) [NetworkManager.class:?]
   at net.minecraft.network.NetworkManager.channelRead0(NetworkManager.java:49) [NetworkManager.class:?]
   at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:105) [SimpleChannelInboundHandler.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) [AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) [AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340) [AbstractChannelHandlerContext.class:4.1.9.Final]
   at net.minecraftforge.fml.common.network.handshake.NetworkDispatcher.handleServerSideCustomPacket(NetworkDispatcher.java:448) [NetworkDispatcher.class:?]
   at net.minecraftforge.fml.common.network.handshake.NetworkDispatcher.channelRead0(NetworkDispatcher.java:270) [NetworkDispatcher.class:?]
   at net.minecraftforge.fml.common.network.handshake.NetworkDispatcher.channelRead0(NetworkDispatcher.java:74) [NetworkDispatcher.class:?]
   at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:105) [SimpleChannelInboundHandler.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) [AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) [AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340) [AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:293) [ByteToMessageDecoder.class:4.1.9.Final]
   at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:267) [ByteToMessageDecoder.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) [AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) [AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340) [AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:293) [ByteToMessageDecoder.class:4.1.9.Final]
   at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:267) [ByteToMessageDecoder.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) [AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) [AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340) [AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:293) [ByteToMessageDecoder.class:4.1.9.Final]
   at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:267) [ByteToMessageDecoder.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) [AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) [AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340) [AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.handler.timeout.IdleStateHandler.channelRead(IdleStateHandler.java:287) [IdleStateHandler.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) [AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) [AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340) [AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1334) [DefaultChannelPipeline$HeadContext.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) [AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) [AbstractChannelHandlerContext.class:4.1.9.Final]
   at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:926) [DefaultChannelPipeline.class:4.1.9.Final]
   at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:134) [AbstractNioByteChannel$NioByteUnsafe.class:4.1.9.Final]
   at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:624) [NioEventLoop.class:4.1.9.Final]
   at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:559) [NioEventLoop.class:4.1.9.Final]
   at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:476) [NioEventLoop.class:4.1.9.Final]
   at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:438) [NioEventLoop.class:4.1.9.Final]
   at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:858) [SingleThreadEventExecutor$5.class:4.1.9.Final]
   at java.lang.Thread.run(Unknown Source) [?:1.8.0_121]
Caused by: java.lang.InstantiationException: mawmanager.maw.GUI.CheckSystem.IMessage.Client.PlayerModDataForCheckSender
   at java.lang.Class.newInstance(Unknown Source) ~[?:1.8.0_121]
   at net.minecraftforge.fml.common.network.FMLIndexedMessageToMessageCodec.decode(FMLIndexedMessageToMessageCodec.java:101) ~[FMLIndexedMessageToMessageCodec.class:?]
   at net.minecraftforge.fml.common.network.FMLIndexedMessageToMessageCodec.decode(FMLIndexedMessageToMessageCodec.java:40) ~[FMLIndexedMessageToMessageCodec.class:?]
   at io.netty.handler.codec.MessageToMessageCodec$2.decode(MessageToMessageCodec.java:81) ~[MessageToMessageCodec$2.class:4.1.9.Final]
   at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:88) ~[MessageToMessageDecoder.class:4.1.9.Final]
   ... 53 more
Caused by: java.lang.NoSuchMethodException: mawmanager.maw.GUI.CheckSystem.IMessage.Client.PlayerModDataForCheckSender.<init>()
   at java.lang.Class.getConstructor0(Unknown Source) ~[?:1.8.0_121]
   at java.lang.Class.newInstance(Unknown Source) ~[?:1.8.0_121]
   at net.minecraftforge.fml.common.network.FMLIndexedMessageToMessageCodec.decode(FMLIndexedMessageToMessageCodec.java:101) ~[FMLIndexedMessageToMessageCodec.class:?]
   at net.minecraftforge.fml.common.network.FMLIndexedMessageToMessageCodec.decode(FMLIndexedMessageToMessageCodec.java:40) ~[FMLIndexedMessageToMessageCodec.class:?]
   at io.netty.handler.codec.MessageToMessageCodec$2.decode(MessageToMessageCodec.java:81) ~[MessageToMessageCodec$2.class:4.1.9.Final]
   at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:88) ~[MessageToMessageDecoder.class:4.1.9.Final]
   ... 53 more
[23:36:53] [Netty Server IO #2/ERROR] [FML]: Network Disconnect: A fatal error has occurred, this connection is terminated
[23:36:53] [Server thread/INFO]: Player813 lost connection: A fatal error has occurred, this connection is terminated
[23:36:53] [Server thread/INFO]: Player813 left the game

V0idWa1k3r · October 25, 2018

13 minutes ago, themaw said:

Caused by: java.lang.NoSuchMethodException: mawmanager.maw.GUI.CheckSystem.IMessage.Client.PlayerModDataForCheckSender.<init>()

Your IMessage implementation must have a parameterless constructor.

Also this forum has a spoiler tag. Use it.

Spoiler

It has an eye icon

Edited October 25, 2018 by V0idWa1k3r

themaw · October 25, 2018

14 minutes ago, V0idWa1k3r said:

Your IMessage implementation must have a parameterless constructor.

Also this forum has a spoiler tag. Use it.

Hide contents

It has an eye icon

...I......dont't know what to say.

You solved my problem that I haven't solved for many days

Quote

Your IMessage implementation must have a parameterless constructor.

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Is there any way to send an object by IMessage？

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