updatenetty.md

Updating netty manually for Minecraft 1.12

Get your minecraft_server.1.12.2.jar from the root of your server, download the latest netty 4 full package https://netty.io/downloads.html

Open your server jar with 7zip and navigate to minecraft_server.1.12.2.jar\io\netty\

open the netty package you downloaded and go to netty-4.1.70.Final.tar.gz\netty-4.1.70.Final.tar\netty-4.1.70.Final\jar\all-in-one\netty-all-4.1.70.Final.jar\io\netty\

back in the minecraft server jar delete these 6 folders

now simple copy the same 6 folders from the netty package into the minecraft jar

throw the jar back into the root of your server and you are done!

Could you explain please what this will change for the current downloaded 1.12.2 server version and will this patch added to 1.12.2 and change it maybe to 1.12.3?

Would be nice to know because what whill happen if smth. goes wrong? Safte first ;)

Edit: What about the client side version? Anything to edit here to not run into any conflicts?

Could you explain please what this will change for the current downloaded 1.12.2 server version and will this patch added to 1.12.2 and change it maybe to 1.12.3?

Not quite sure what you are trying to say, this simply updates the included netty version for issues like:
repeated spam of this and frequent disconnects
NetworkDispatcher exception io.netty.channel.unix.Errors$NativeIoException: syscall:writev(…) failed: Broken pipe

It doesn't touch any Mojang code.

Would be nice to know because what whill happen if smth. goes wrong? Safte first ;)

Always take backups, but if you mess this up the server probably doesn't even start and you can just download a clean minecraft_server jar file.

Edit: What about the client side version? Anything to edit here to not run into any conflicts?

No the client doesn't care, and software like Spigot and Bungeecord already do this on their side. Forge is the outlier in this case.

How do I do this on Forge exactly?

this is for Forge or Vanilla

i don't see a io directory

It just crashed:
https://gist.github.com/DesolateIntention/c42dbbd1e095c919534ca376e6bb97a3

Caused by: java.lang.NoClassDefFoundError: org/apache/logging/log4j/Level

try reinstalling forge..

What do you mean.

i actualized and get thats again
https://pastebin.com/0fjyZ2WZ

The link with the netty download does not work for me. It takes me to a blank page which only says "Forbidden".

Is there any other link I can use to get the right netty version. I tried downloading it from https://github.com/netty/netty/releases/tag/netty-4.1.37.Final but there I was not able to locate the right file I needed.

hello! when I enter the netty file I do not get the 6 files to replace

For anyone struggling to find the jar folder, the latest versions do not have it for some reason... If you grab 4.1.27 on https://javalibs.com/artifact/io.netty/netty-all, you can follow the steps normally; if you don't want that old of a version, you can go up to v68 before the jar portion disappears