[1.12.2] Sending Packets from Forge to Sponge

Plugins Plugin Development
1

Hi guys,

I’am trying to send a packet to the server from my forge mod ( client side). And i want to receive this packet in my sponge plugin. So i used ChannelRegistrar etc… BUT! Nothing is happening, nothing is printing in the terminal.
Here my code :

FORGE :
Packet class : public class PacketTest implements IMessage { private String text; - Pastebin.com
Class where i register the packet : public class AlbCommon { public static SimpleNetworkWrapper network; - Pastebin.com
Class where i send the packet: @Override protected void actionPerformed(GuiButton button) throws IOExcept - Pastebin.com

SPONGE :
Main class where i create the ChannelBinding : public class Main { public static ChannelBinding.IndexedMessageChannel ch - Pastebin.com
Class where i receive the packet : public class MessageGui implements Message { private String text; - Pastebin.com

This is supposed to work and at least show the “works” message in the handler class when i receive my packet (last sponge class that i linked ).
I have no error in my terminal…
Please guys I’m struggling on this issue for few days…

I’ve already read these topics : Communication between spongeforge and forge mod client

I apologize in advance for my English.
Thanks.

2

Nobody to help me ?

3

Unfortunately I don’t know the solution, but I want to push this topic because I faced the same challenge this weekend. I would also appreciate any help, because I need to communicate between my plugin and my mod. For example to open a custom GUI on client side and to transfer the result to the server to store the result inside a database and to work with the data in my plugin.

1 Like
4

Yeah i wanna do the same thing. Please help us :’(

5

Well, Sponge networking API (or how this thing is named) is somewhy poorly documented, so yeah, it’s easy to stuck there.
I’m going to help you by giving examples of code I use in my plugin. They work normally.
First off: channel registering (done in init, but I think it doesn’t matter when you register your channel)

ChannelBinding.RawDataChannel yourChannel = Sponge.getGame()
                .getChannelRegistrar()
                .createRawChannel(yourPlugin, "yourChannelName");

Then: my listener

public class ExampleListener implements RawDataListener {
    @Override
    public void handlePayload(ChannelBuf buf, RemoteConnection connection, Platform.Type side) {
        if (!(connection instanceof PlayerConnection)) {
            return;
        }

        Player player = ((PlayerConnection) connection).getPlayer();

        // Do your stuff here.
    }
}

And now, simply invoke yourChannel.addListener(new ExampleListener())
That’s it.

1 Like
6

Hi,
Thanks for your answer.
But i already tried with RawDataChannel, i will try again for being sure.

7

It’ll be strange if it won’t work. I copied code from my plugin where everything is working fine.

8

In your plugin, it was a forge packet?

9

Yeah. I can give you an example of how I send packet from client side to clarify, if you want.

10

Yeah why not, it will be very cool !

11

Here you go.
Registering:

NetworkRegistry.INSTANCE.newEventDrivenChannel(channelName).register(yourProxyHere);

Sending:

Minecraft.getMinecraft().player.connection.sendPacket(new CPacketCustomPayload(channelName, new PacketBuffer(buffer)));
12

Can you show me your buffer please?

13

Sure

ByteBuf buffer = Unpooled.buffer();
buffer.writeBoolean(true);
14

Ok thanks i will test right now ! I appreciate your help !

15

Sorry but what is yourProxyHere

16

It’s simply an event listener object. You can subscribe to an appropriate event in it to listen for incoming packets.

17

Oh okey, but if i dont need an event?

Just i need to create newEventDrivenChannel ? or sending my packet is enough?

18

I think you can ignore registering if you don’t need to listen to anything.

19

Hi thanks,
now i receive my sysout in my terminal (“received”) but i have an another problem
Stacktrace : [09:40:20] [Netty Server IO #2/INFO] [STDOUT]: [fr.frenchdevz.albhybrid.TestList - Pastebin.com
My listener in my plugin : public class TestListener implements RawDataListener { @Override publi - Pastebin.com
how i send my packet : @Override protected void actionPerformed(GuiButton button) throws IOExcepti - Pastebin.com

20

How did you got the registration done? I always receive the exception that the channel is already registered on the server/plugin side.

Registration server side: @Listener public void onServerStart(GameInitializationEvent event) { - Pastebin.com
Server side event handler/listener: public class ModListener implements RawDataListener { @Override publ - Pastebin.com

Client side registration: @EventHandler public static void preInit(FMLPreInitializationEvent event) { - Pastebin.com
Client side packet send: @SideOnly(Side.CLIENT) @SubscribeEvent public void onKeyInput(KeyInputEvent - Pastebin.com