[1.8]Sync server data with all clients

[FLUFFY2]

Hi there,

Basically i have a data saved into the player with ExtendedPlayerProperties.

That data is synced between the ACTUAL client and server. This data is used for rendering.

For my client i can see the rendering, but for other clients they can see sh*t.

Thats because i need to send the data from the server to their clients to update the info.

 

I know how pakets work i have a working SNW and everything.

The problem is how can i make others clients to readn my client data?

DataWatcher works and makes render the model for other clients, but i dont want to use that, because of the limited IDs.

 

Here is what im doing now:

I grab the data form the server and send to all clients.

But what? How can i make other clients to set my client data with the correct value???

They cant access my player, because there is only 2 way to access players in pakets.

.getServerHandler().playerEntity or Minecraft.getMinecraft().

 

Nothing like .getTheSenderPlayer().

 

Thanks for helping!

[coolAlias]

You have to send the player's info, e.g. entityId or UUID, along with the packet so the receiving player can fetch the sending player from the World object.

 

Once you have the sending player instance, you can read the IEEP data in for them, and not the current client player.

[FLUFFY2]

Thank you guys for the help!

So i used entityID and think throught the logic 100 times now, yet its not working.

I got a crash on the other clients side.

 

Here is what i have done so far:

 

On a PlayerTick event i have this:

if(!world.isRemote){
if(player.inventory.mainInventory[8] != null && player.inventory.mainInventory[8].getItem() == AmnesiaLights.LanternOn){
	if(props.hotbarLantern() != 1) //NOTE: I do this to not constantly send pakets
		props.setHotbarLantern(1);
	}else if(player.inventory.mainInventory[8] != null && player.inventory.mainInventory[8].getItem() == AmnesiaLights.LanternOff){
		if(props.hotbarLantern() != 2)
			props.setHotbarLantern(2);
	}else{
		if(props.hotbarLantern() != 0)
			props.setHotbarLantern(0);
	}
}

 

On the ExtendedPlayerProps i have this:

public void setHotbarLantern(int state){
this.hotbarLantern = state;
AmnesiaLights.snw.sendToAll(new HotbarLanternMessageHandler(player));
        //Yes ALL for now, i will use the player tracking later diesieben.
}

 

And the actual packet, what yields the crash:

private NBTTagCompound data;
private int playerID;

public HotbarLanternMessageHandler(){
}

public HotbarLanternMessageHandler(EntityPlayer player){
data = new NBTTagCompound();
playerID = player.getEntityId();
ExtendedPlayerPropertiesHandler.get(player).saveNBTData(data);
}

@Override
public void toBytes(ByteBuf buf) {
ByteBufUtils.writeTag(buf, data);
buf.writeInt(playerID);
}

@Override
public void fromBytes(ByteBuf buf) { 
this.data = ByteBufUtils.readTag(buf);
this.playerID = buf.readInt();
}

@Override
public IMessage onMessage(HotbarLanternMessageHandler message, MessageContext ctx){
EntityPlayer player = (EntityPlayer)Minecraft.getMinecraft().theWorld.getEntityByID(message.playerID);
ExtendedPlayerPropertiesHandler.get(player).loadNBTData(message.data);

return null;
}

 

And the crash:

[Netty Client IO #5/ERROR]: FMLIndexedMessageCodec exception caught
io.netty.handler.codec.DecoderException: java.lang.NullPointerException: Undefined message for discriminator 10 in channel AmnesiaLights
at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:99) ~[MessageToMessageDecoder.class:4.0.15.Final]
at io.netty.handler.codec.MessageToMessageCodec.channelRead(MessageToMessageCodec.java:111) ~[MessageToMessageCodec.class:4.0.15.Final]
at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:338) [DefaultChannelHandlerContext.class:4.0.15.Final]
at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:324) [DefaultChannelHandlerContext.class:4.0.15.Final]
at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:785) [DefaultChannelPipeline.class:4.0.15.Final]
at io.netty.channel.embedded.EmbeddedChannel.writeInbound(EmbeddedChannel.java:169) [EmbeddedChannel.class:4.0.15.Final]
at net.minecraftforge.fml.common.network.internal.FMLProxyPacket.processPacket(Unknown Source) [FMLProxyPacket.class:?]
at net.minecraft.network.NetworkManager.channelRead0(Unknown Source) [NetworkManager.class:?]
at net.minecraft.network.NetworkManager.channelRead0(Unknown Source) [NetworkManager.class:?]
at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:103) [simpleChannelInboundHandler.class:4.0.15.Final]
at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:338) [DefaultChannelHandlerContext.class:4.0.15.Final]
at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:324) [DefaultChannelHandlerContext.class:4.0.15.Final]
at net.minecraftforge.fml.common.network.handshake.NetworkDispatcher.handleClientSideCustomPacket(Unknown Source) [NetworkDispatcher.class:?]
at net.minecraftforge.fml.common.network.handshake.NetworkDispatcher.channelRead0(Unknown Source) [NetworkDispatcher.class:?]
at net.minecraftforge.fml.common.network.handshake.NetworkDispatcher.channelRead0(Unknown Source) [NetworkDispatcher.class:?]
at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:103) [simpleChannelInboundHandler.class:4.0.15.Final]
at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:338) [DefaultChannelHandlerContext.class:4.0.15.Final]
at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:324) [DefaultChannelHandlerContext.class:4.0.15.Final]
at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:153) [byteToMessageDecoder.class:4.0.15.Final]
at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:338) [DefaultChannelHandlerContext.class:4.0.15.Final]
at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:324) [DefaultChannelHandlerContext.class:4.0.15.Final]
at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:153) [byteToMessageDecoder.class:4.0.15.Final]
at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:338) [DefaultChannelHandlerContext.class:4.0.15.Final]
at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:324) [DefaultChannelHandlerContext.class:4.0.15.Final]
at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:153) [byteToMessageDecoder.class:4.0.15.Final]
at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:338) [DefaultChannelHandlerContext.class:4.0.15.Final]
at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:324) [DefaultChannelHandlerContext.class:4.0.15.Final]
at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:103) [MessageToMessageDecoder.class:4.0.15.Final]
at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:338) [DefaultChannelHandlerContext.class:4.0.15.Final]
at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:324) [DefaultChannelHandlerContext.class:4.0.15.Final]
at io.netty.handler.timeout.ReadTimeoutHandler.channelRead(ReadTimeoutHandler.java:149) [ReadTimeoutHandler.class:4.0.15.Final]
at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:338) [DefaultChannelHandlerContext.class:4.0.15.Final]
at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:324) [DefaultChannelHandlerContext.class:4.0.15.Final]
at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:785) [DefaultChannelPipeline.class:4.0.15.Final]
at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:132) [AbstractNioByteChannel$NioByteUnsafe.class:4.0.15.Final]
at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:485) [NioEventLoop.class:4.0.15.Final]
at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:452) [NioEventLoop.class:4.0.15.Final]
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:346) [NioEventLoop.class:4.0.15.Final]
at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:101) [singleThreadEventExecutor$2.class:4.0.15.Final]
at java.lang.Thread.run(Unknown Source) [?:1.8.0_60]

 

Something is null, but i dont really get what. I tried null checks it still crashes.

 

Thanks for helping!

[FLUFFY2]

Okay, i changed so it only sends the data.

I registered with this, in the main class inside preInit():

public static SimpleNetworkWrapper snw; 
.........
snw = NetworkRegistry.INSTANCE.newSimpleChannel(AmnesiaLights.ModID); 
snw.registerMessage(HotbarLanternMessageHandler.class, HotbarLanternMessageHandler.class, 3, Side.CLIENT);

I checked it and the ID 3 isn't duplicated!

 

The full packet is this:

public class HotbarLanternMessageHandler implements IMessage, IMessageHandler<HotbarLanternMessageHandler, IMessage> { 

private int hotbarLantern;
private int playerID;

public HotbarLanternMessageHandler(){
}

public HotbarLanternMessageHandler(EntityPlayer player, int hotbarLantern){
	this.hotbarLantern = hotbarLantern;
	this.playerID = player.getEntityId();
}

@Override
public void toBytes(ByteBuf buf) {
	buf.writeInt(hotbarLantern);
	buf.writeInt(playerID);
}

@Override
public void fromBytes(ByteBuf buf) { 
	this.hotbarLantern = buf.readInt();
	this.playerID = buf.readInt();
}

@Override
public IMessage onMessage(HotbarLanternMessageHandler message, MessageContext ctx){
	EntityPlayer player = (EntityPlayer)Minecraft.getMinecraft().theWorld.getEntityByID(message.playerID);
	ExtendedPlayerPropertiesHandler.get(player).setHotbarLantern(message.hotbarLantern);

	return null;
}
}

 

Thanks for helping!

[FLUFFY2]

Wait... i got new resoults, but wierd ones.

 

1st client finally get to know the 2nd client data, the resould is the 1st can see the rendering.

But when the 1st client toggled the data, the 2nd client didn't see anything. Hows that???

 

The 1st client(the LAN host) can see the other player and his rendering.

The 2nd client cant see the other and his rendering, but the 1st client gets the updated info.

 

I play more around that in a bit.

 

 

[Ernio]

Aside from other problems:

1. Thread safety: http://greyminecraftcoder.blogspot.com.au/2015/01/thread-safety-with-network-messages.html

2. Don't use sendToAll - it sends data to all players, which is no necessary (even bad because clients can't analyse that data anyway, if they don't have player which data should be assigned to). Use combination of PlayerEvent.StartTracking and WorldServer#getEntityTracker() as diesieben suggested.

[FLUFFY2]

1. What the hell is that??? Never heard of it..... oh.... 1.8 and its great features, i see now.

2.I just used it for temp testing, but if that could be the problem than okay, i change it fast.

 

Thanks!

[FLUFFY2]

Okay, i managed to get some things working, but sometimes i got a crash.

I done the Tracking and closest player part. So it not cause all players to get the packet.

FMLIndexedMessageCodec exception caught
io.netty.handler.codec.DecoderException: java.lang.IndexOutOfBoundsException: readerIndex(0) + length(1) exceeds writerIndex(9): UnpooledHeapByteBuf(ridx: 0, widx: 9, cap: 256)
at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:99) ~[MessageToMessageDecoder.class:4.0.15.Final]
at io.netty.handler.codec.MessageToMessageCodec.channelRead(MessageToMessageCodec.java:111) ~[MessageToMessageCodec.class:4.0.15.Final]
at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:338) [DefaultChannelHandlerContext.class:4.0.15.Final]
at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:324) [DefaultChannelHandlerContext.class:4.0.15.Final]
at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:785) [DefaultChannelPipeline.class:4.0.15.Final]
at io.netty.channel.embedded.EmbeddedChannel.writeInbound(EmbeddedChannel.java:169) [EmbeddedChannel.class:4.0.15.Final]
at net.minecraftforge.fml.common.network.internal.FMLProxyPacket.processPacket(Unknown Source) [FMLProxyPacket.class:?]
at net.minecraft.network.NetworkManager.channelRead0(Unknown Source) [NetworkManager.class:?]
at net.minecraft.network.NetworkManager.channelRead0(Unknown Source) [NetworkManager.class:?]
at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:103) [simpleChannelInboundHandler.class:4.0.15.Final]
at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:338) [DefaultChannelHandlerContext.class:4.0.15.Final]
at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:324) [DefaultChannelHandlerContext.class:4.0.15.Final]
at net.minecraftforge.fml.common.network.handshake.NetworkDispatcher.handleClientSideCustomPacket(Unknown Source) [NetworkDispatcher.class:?]
at net.minecraftforge.fml.common.network.handshake.NetworkDispatcher.channelRead0(Unknown Source) [NetworkDispatcher.class:?]
at net.minecraftforge.fml.common.network.handshake.NetworkDispatcher.channelRead0(Unknown Source) [NetworkDispatcher.class:?]
at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:103) [simpleChannelInboundHandler.class:4.0.15.Final]
at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:338) [DefaultChannelHandlerContext.class:4.0.15.Final]
at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:324) [DefaultChannelHandlerContext.class:4.0.15.Final]
at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:785) [DefaultChannelPipeline.class:4.0.15.Final]
at io.netty.channel.local.LocalChannel.finishPeerRead(LocalChannel.java:312) [LocalChannel.class:4.0.15.Final]
at io.netty.channel.local.LocalChannel.access$400(LocalChannel.java:44) [LocalChannel.class:4.0.15.Final]
at io.netty.channel.local.LocalChannel$6.run(LocalChannel.java:298) [LocalChannel$6.class:4.0.15.Final]
at io.netty.channel.local.LocalEventLoop.run(LocalEventLoop.java:33) [LocalEventLoop.class:4.0.15.Final]
at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:101) [singleThreadEventExecutor$2.class:4.0.15.Final]
at java.lang.Thread.run(Unknown Source) [?:1.8.0_60]
Caused by: java.lang.IndexOutOfBoundsException: readerIndex(0) + length(1) exceeds writerIndex(9): UnpooledHeapByteBuf(ridx: 0, widx: 9, cap: 256)
at io.netty.buffer.AbstractByteBuf.checkReadableBytes(AbstractByteBuf.java:1161) ~[AbstractByteBuf.class:4.0.15.Final]
at io.netty.buffer.AbstractByteBuf.readByte(AbstractByteBuf.java:563) ~[AbstractByteBuf.class:4.0.15.Final]
at net.minecraft.network.PacketBuffer.readByte(Unknown Source) ~[PacketBuffer.class:?]
at net.minecraftforge.fml.common.network.FMLIndexedMessageToMessageCodec.decode(Unknown Source) ~[FMLIndexedMessageToMessageCodec.class:?]
at net.minecraftforge.fml.common.network.FMLIndexedMessageToMessageCodec.decode(Unknown Source) ~[FMLIndexedMessageToMessageCodec.class:?]
at io.netty.handler.codec.MessageToMessageCodec$2.decode(MessageToMessageCodec.java:81) ~[MessageToMessageCodec$2.class:4.0.15.Final]
at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:89) ~[MessageToMessageDecoder.class:4.0.15.Final]
... 24 more
[18:08:22] [Netty Local Client IO #1/ERROR]: SimpleChannelHandlerWrapper exception
io.netty.handler.codec.DecoderException: java.lang.IndexOutOfBoundsException: readerIndex(0) + length(1) exceeds writerIndex(9): UnpooledHeapByteBuf(ridx: 0, widx: 9, cap: 256)
at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:99) ~[MessageToMessageDecoder.class:4.0.15.Final]
at io.netty.handler.codec.MessageToMessageCodec.channelRead(MessageToMessageCodec.java:111) ~[MessageToMessageCodec.class:4.0.15.Final]
at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:338) [DefaultChannelHandlerContext.class:4.0.15.Final]
at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:324) [DefaultChannelHandlerContext.class:4.0.15.Final]
at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:785) [DefaultChannelPipeline.class:4.0.15.Final]
at io.netty.channel.embedded.EmbeddedChannel.writeInbound(EmbeddedChannel.java:169) [EmbeddedChannel.class:4.0.15.Final]
at net.minecraftforge.fml.common.network.internal.FMLProxyPacket.processPacket(Unknown Source) [FMLProxyPacket.class:?]
at net.minecraft.network.NetworkManager.channelRead0(Unknown Source) [NetworkManager.class:?]
at net.minecraft.network.NetworkManager.channelRead0(Unknown Source) [NetworkManager.class:?]
at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:103) [simpleChannelInboundHandler.class:4.0.15.Final]
at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:338) [DefaultChannelHandlerContext.class:4.0.15.Final]
at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:324) [DefaultChannelHandlerContext.class:4.0.15.Final]
at net.minecraftforge.fml.common.network.handshake.NetworkDispatcher.handleClientSideCustomPacket(Unknown Source) [NetworkDispatcher.class:?]
at net.minecraftforge.fml.common.network.handshake.NetworkDispatcher.channelRead0(Unknown Source) [NetworkDispatcher.class:?]
at net.minecraftforge.fml.common.network.handshake.NetworkDispatcher.channelRead0(Unknown Source) [NetworkDispatcher.class:?]
at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:103) [simpleChannelInboundHandler.class:4.0.15.Final]
at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:338) [DefaultChannelHandlerContext.class:4.0.15.Final]
at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:324) [DefaultChannelHandlerContext.class:4.0.15.Final]
at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:785) [DefaultChannelPipeline.class:4.0.15.Final]
at io.netty.channel.local.LocalChannel.finishPeerRead(LocalChannel.java:312) [LocalChannel.class:4.0.15.Final]
at io.netty.channel.local.LocalChannel.access$400(LocalChannel.java:44) [LocalChannel.class:4.0.15.Final]
at io.netty.channel.local.LocalChannel$6.run(LocalChannel.java:298) [LocalChannel$6.class:4.0.15.Final]
at io.netty.channel.local.LocalEventLoop.run(LocalEventLoop.java:33) [LocalEventLoop.class:4.0.15.Final]
at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:101) [singleThreadEventExecutor$2.class:4.0.15.Final]
at java.lang.Thread.run(Unknown Source) [?:1.8.0_60]
Caused by: java.lang.IndexOutOfBoundsException: readerIndex(0) + length(1) exceeds writerIndex(9): UnpooledHeapByteBuf(ridx: 0, widx: 9, cap: 256)
at io.netty.buffer.AbstractByteBuf.checkReadableBytes(AbstractByteBuf.java:1161) ~[AbstractByteBuf.class:4.0.15.Final]
at io.netty.buffer.AbstractByteBuf.readByte(AbstractByteBuf.java:563) ~[AbstractByteBuf.class:4.0.15.Final]
at net.minecraft.network.PacketBuffer.readByte(Unknown Source) ~[PacketBuffer.class:?]
at net.minecraftforge.fml.common.network.FMLIndexedMessageToMessageCodec.decode(Unknown Source) ~[FMLIndexedMessageToMessageCodec.class:?]
at net.minecraftforge.fml.common.network.FMLIndexedMessageToMessageCodec.decode(Unknown Source) ~[FMLIndexedMessageToMessageCodec.class:?]
at io.netty.handler.codec.MessageToMessageCodec$2.decode(MessageToMessageCodec.java:81) ~[MessageToMessageCodec$2.class:4.0.15.Final]
at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:89) ~[MessageToMessageDecoder.class:4.0.15.Final]
... 24 more

 

Im pretty sure i registered my pakets and its IDs correctly.

 

Also sometimes i can see this when sending a packet, not always, just sometimes appears:

[Netty Server IO #0/ERROR]: java.lang.IndexOutOfBoundsException: readerIndex: 10 (expected: 0 <= readerIndex <= writerIndex(9))

It appears like 3-5 times than crash happends.

[Ernio]

Please make git repo or pastebin ALL relevant files. From packets and sending methods to registering.

[FLUFFY2]

Okay, here we go.

 

Main class:

http://pastebin.com/82VEuvp6

 

PlayerEvent.StartTracking:

http://pastebin.com/v9Z0081W

 

The Extended Player Properties:

http://pastebin.com/fpTqb4i1

 

The packet:

http://pastebin.com/UriYbsu4

[FLUFFY2]

OMG WHAT THE FUUUUUU*K???!!!!

snw.registerMessage(SettingsMessageHandler.class, SettingsMessageHandler.class, 1, Side.CLIENT);

 

This was the whole problem.

I set up a config system, where the joining player gets the server config, and when leaves it changes back to original. Since i set the packet to recieve on SERVER side instead of CLIENT all the configs get null.

 

And the actual value needed to do the visible rendering was null. So the system worked, but the another value was null.

 

Yeah i hate when myself.

 

Anyways thany for the help guys.

The "Client to Clients" sync works now!