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packet listener for forge 1.8.9 doesn't work


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Greetings, I am currently trying to register a packet listener for forge 1.8.9 like this:

public class NameChangePacketListener {
    public void onPacketReceived(FMLNetworkEvent.ClientCustomPacketEvent event) throws IOException {

        if (event.packet.toS3FPackets() instanceof S38PacketPlayerListItem) {
            S38PacketPlayerListItem packet = (S38PacketPlayerListItem) event.packet.toS3FPackets();

            if (packet.func_179768_b() == S38PacketPlayerListItem.Action.UPDATE_DISPLAY_NAME) {
                for (S38PacketPlayerListItem.AddPlayerData playerData : packet.func_179767_a()) {
                    String newName = playerData.getDisplayName().getUnformattedText();

                    IChatComponent chatComponent = new ChatComponentText("Your name has been changed")
                            .setChatStyle(new ChatStyle().setColor(EnumChatFormatting.GREEN));

Now, in the init method, I register this listener to the event bus like so:

    public static void init(FMLInitializationEvent event){
        MinecraftForge.EVENT_BUS.register(new NameChangePacketListener());

I know for a fact the init method works, so why does the "onPacketReceived" method not get called? the "test" doesn't print at all

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1.8.9 is no longer supported as it is really really old https://forums.minecraftforge.net/topic/91712-supported-version-directory/

That being said, unfortunately I don't know how to help in this case, but since this version is unsupported I don't know if some will eventually come (hopefully it will, but it's unlikely)

Don't blame me if i always ask for your help. I just want to learn to be better :)

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