Please read the rules and FAQ before starting a new topic

Illegal Packet Error on Multiplayer Modded Minecraft

Posted October 30, 20222 yr

My friend and I are trying to play some multiplayer modded minecraft hosted on his computer and played over the same network. I keep getting disconnected with the error "Illegal Packet Received, Terminating Connection". It's not consistent with how long it takes for me to get booted from the game and the host doesn't seem to have any issues. We've tried both the latest version of forge and this version of forge. Thank you for any help you can provide.

Minecraft Version: 1.19.2
Forge Version: 43.1.43

My debug log:

https://www.dropbox.com/s/4fmzx8meaq8kari/Player latest log.log?dl=0

Host debug log:

https://www.dropbox.com/s/s37wostm3dmncj3/Host latest log.log?dl=0

Quote

October 31, 20222 yr

One of your mods has broken networking code.

Mojang don't put these errors in the log by default. For us to see the error you will need to add the following property to your jvm arguments.

Quote

-Dforge.logging.mojang.level=debug

Since it looks you are using curseforge this in their minecraft settings. Beneath where you change the memory used.

For the server you change user_jvm_args.txt

But I also noticed you have hexerei. There is a known issue with the 1.19 version not working properly in multiplayer.

https://github.com/JoeFoxe/Hexerei-1.18/issues/56

Boilerplate:

If you don't post your logs/debug.log we can't help you. For curseforge you need to enable the forge debug.log in its minecraft settings. You should also post your crash report if you have one.

If there is no error in the log file and you don't have a crash report then post the launcher_log.txt from the minecraft folder. Again for curseforge this will be in your curseforge/minecraft/Install

Large files should be posted to a file sharing site like https://gist.github.com You should also read the support forum sticky post.

Quote

October 31, 20222 yr

Author

Thank you Warjort,

I won't be able to test your suggestions till this weekend but I'll definitely try removing Hexerei first and if it keeps happening I'll put in the jvm argument and get the updated logs.

Quote

November 3, 20222 yr

Author

Alright, we tried both disabling Hexerei and putting the JVM argument in.
Here are the latest logs.

My debug log:

https://www.dropbox.com/s/mozf9vdvx45xjoz/Player latest log.log?dl=0

Host debug log:

https://www.dropbox.com/s/0y9v59bp6b1dgb9/Host latest log.log?dl=0

Thank you again for any help you can give.

Quote

November 4, 20222 yr

Youd didn't post the debug.logs

Those are the latest.logs which doesn't show debug information.

Since it looks like you are using curseforge, you need to enable the forge debug.log in curseforge's minecraft settings.

Anyway, one of your logs contains this.

Quote

[19:14:46] [Netty Client IO #0/ERROR]: Received empty payload on channel create:main

Which looks like this create issue reported by somebody else: https://github.com/Creators-of-Create/Create/issues/3973

Boilerplate:

If you don't post your logs/debug.log we can't help you. For curseforge you need to enable the forge debug.log in its minecraft settings. You should also post your crash report if you have one.

If there is no error in the log file and you don't have a crash report then post the launcher_log.txt from the minecraft folder. Again for curseforge this will be in your curseforge/minecraft/Install

Large files should be posted to a file sharing site like https://gist.github.com You should also read the support forum sticky post.

Quote

November 4, 20222 yr

Author

I am sorry, I thought I had enabled it through the Minecraft launcher in the JVM Arguments as when I go through the profile options through Curseforge there is no entry field for JVM Arguments under where you change the memory settings. I will try to find a tutorial tomorrow.

Thank you again for the help you've been giving me.

Quote

November 4, 20222 yr

The problem is you haven't told curseforge that it needs to enable the debug.log for forge.

It is a toggle button in the "advanced" section.

Curseforge calls the jvm arguments "additional arguments". It's at the very bottom.

Anyway, I think your problem is with the create mod, see the link to the issue I posted above.

You should be speaking to them on how to fix it.

If the issue is only with LAN games, you can try setting up a real server.

Boilerplate:

If you don't post your logs/debug.log we can't help you. For curseforge you need to enable the forge debug.log in its minecraft settings. You should also post your crash report if you have one.

If there is no error in the log file and you don't have a crash report then post the launcher_log.txt from the minecraft folder. Again for curseforge this will be in your curseforge/minecraft/Install

Large files should be posted to a file sharing site like https://gist.github.com You should also read the support forum sticky post.

Quote

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Unfortunately, your content contains terms that we do not allow. Please edit your content to remove the highlighted words below.

Reply to this topic...

https://forums.minecraftforge.net/topic/117870-illegal-packet-error-on-multiplayer-modded-minecraft/

Followers

Go to topic listing

IPS spam blocked by CleanTalk.

Announcements

Is this forum active?

hello everyone..!

By WinX · 1 hour ago1 hr
How to add my mob to another mod's biome in 1.20.1.

tysm

By ilov3gam3z · 14 hours ago14 hr
Orbital strike cannon fishing rod mod

was focused on school so didnt respond u think ur gonna get 1.21+ done by this week? @FoxyWoxy

By Astoxy · 21 hours ago21 hr
How to add my mob to another mod's biome in 1.20.1.

You can add mob spawns using Forge's Biome Modifiers feature. I won't go into details on how to use a data generator for them, but here's a simple example:
{ "type": "forge:add_spawns", // Required "biomes": "#namespace:biome_tag", // Accepts a biome id, [list of biome ids], or #namespace:biome_tag "spawners": { "type": "namespace:entity_type", // Type of mob to spawn "weight": 100, // int, spawn weighting "minCount": 1, // int, minimum pack size "maxCount": 4 // int, maximum pack size } }This JSON file would go somewhere like this: data/modid/forge/biome_modifier/your_biome_modifier.json

By Jonathing · Yesterday at 12:10 AM1 day
How to change player renderer and transform model parts?

I have been trying for a while now to make a custom player renderer, and replace the vanilla player renderer with it. So far I've come up with a custom player renderer class that extends vanilla PlayerRenderer:
package com.FireDude123.BOTW.entity.renderer; import com.mojang.blaze3d.vertex.PoseStack; import net.minecraft.client.player.AbstractClientPlayer; import net.minecraft.client.renderer.MultiBufferSource; import net.minecraft.client.renderer.entity.player.PlayerRenderer; import net.minecraft.client.renderer.entity.EntityRendererProvider; import net.minecraftforge.client.event.RenderPlayerEvent; import net.minecraftforge.common.MinecraftForge; public class PoseablePlayerRenderer extends PlayerRenderer { public PoseablePlayerRenderer(EntityRendererProvider.Context ctx, boolean slim) { super(ctx, slim); System.out.println("here too"); } @Override public void render(AbstractClientPlayer p_117788_, float p_117789_, float p_117790_, PoseStack poseStack, MultiBufferSource p_117792_, int p_117793_) { System.out.println("didnt get here lol"); model.leftArm.xRot=(float)Math.toRadians(160); super.render(p_117788_, p_117789_, p_117790_, poseStack, p_117792_, p_117793_); } } As you can see, the intended purpose of this is to raise the player's left arm by 160 degrees. However, combined with this logic in ClientModEvents:
@Mod.EventBusSubscriber(modid = MODID, bus = Mod.EventBusSubscriber.Bus.MOD, value = Dist.CLIENT) public static class ClientModEvents { @SubscribeEvent public static void onClientSetup(FMLClientSetupEvent event) { EntityRenderers.register((EntityType<? extends AbstractClientPlayer>)(EntityType<?)EntityType.PLAYER, ctx -> new PoseablePlayerRenderer(ctx, true)); EntityRenderers.register(Entities.MAGNESIS_BLOCK.get(), com.FireDude123.BOTW.entity.renderer.BlockDisplayRenderer::new); EntityRenderers.register(Entities.REMOTE_BOMB.get(), ThrownItemRenderer::new); EntityRenderers.register(Entities.CRYONIS_ICE.get(), com.FireDude123.BOTW.entity.renderer.BlockDisplayRenderer::new); EntityRenderers.register(Entities.STASIS_BLOCK.get(), FallingBlockRenderer::new); } @SubscribeEvent public static void registerLayerDefinitions(EntityRenderersEvent.RegisterLayerDefinitions event) { event.registerLayerDefinition(new ModelLayerLocation(new ResourceLocation(BOTW.MODID, "paraglider"), "main"), ParagliderLayer::createBodyLayer); } }(I also have a paraglider layer here for something else, it's working perfectly fine, also I used the slim setting because the player is slim in 1.20.1 forge)
This logic isn't replacing the renderer, as far as I can tell. Can someone please advise as to why, and how to fix it?

By FireDude123 · Posted Thursday at 12:07 AM2 days

Choonster

Sign In

Illegal Packet Error on Multiplayer Modded Minecraft

Featured Replies

Join the conversation

Posts

Is this forum active?

How to add my mob to another mod's biome in 1.20.1.

Orbital strike cannon fishing rod mod

How to add my mob to another mod's biome in 1.20.1.

How to change player renderer and transform model parts?

Who's Online (See full list)

Important Information

Account

Navigation

Search

Configure browser push notifications

Chrome (Android)

Chrome (Desktop)

Safari (iOS 16.4+)

Safari (macOS)

Edge (Android)

Edge (Desktop)

Firefox (Android)

Firefox (Desktop)