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Internal Exception: io.netty.handler.codec (random messages)
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Bombay-duck posted this in #questions
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Bombay-duckOP
I am running a standard official vanilla server on the latest release. Whenever I try to google this problem, I am met with everyone having a problem with their modded server, their server with plugins, their aternos server, their spigot, what have you. I am none of those.
Not only am I on an ordinary server.jar, but this problem extends to server files of previous versions. I attempted this for 1.21.11, 1.21.10, 1.21.8, 1.21.5, 1.21.4, 1.20.4, 1.19.3. The problem replicated.
I have also tried this with two different people, but the same problem arises.
Not only am I on an ordinary server.jar, but this problem extends to server files of previous versions. I attempted this for 1.21.11, 1.21.10, 1.21.8, 1.21.5, 1.21.4, 1.20.4, 1.19.3. The problem replicated.
I have also tried this with two different people, but the same problem arises.
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Bombay-duckOP
However, I found out that if I make a void world, my friends do not get kicked?
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So maybe it has to do with the actual complexity of the world itself or something?
java -Xmx4096M -Xms4096M -jar server.jar noguias for the dc message on my end, it's no more illuminating.
[21:50:30] [Server thread/INFO]: _SL1ME lost connection: Disconnected
[21:50:30] [Server thread/INFO]: _SL1ME left the game@Bombay-duck
java -Xmx4096M -Xms4096M -jar server.jar nogui Bombay-duckOP
I changed the ram range to go from 1024 to 6144 and that didn't make any difference
I heard someone suggest making sure that Java and Minecraft were allowed through the firewall on public and private, but that didn't fix it.
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I've also been doing servers for years, I have a subdomain, I know which IP address to use, which port to give if I'm using one. Irregardless of if I give my IP straight, or give my subdomain, whether I'm on :25565 or something other, this error persists.
Pixiebob
A few of those screenshots indicate corrupted worlds. Can you walk me through your process of switching version and how it is done? Do you always use a backup copy of the world while you are switching back and forth between versions?
This is rather your world is corrupted or your actual server.jar file is corrupted
Or your RAM is dying but you would notice issues outside of Minecraft as well if that was the case
Or your RAM is dying but you would notice issues outside of Minecraft as well if that was the case
@Pixiebob A few of those screenshots indicate corrupted worlds. Can you walk me through your process of switching version and how it is done? Do you always use a backup copy of the world while you are switching back and forth between versions?
Bombay-duckOP
But I'm not porting my world, I'm running newly made worlds...
@Programmer / Nerd / Human This is rather your world is corrupted or your actual server.jar file is corrupted
Or your RAM is dying but you would notice issues outside of Minecraft as well if that was the case
Or your RAM is dying but you would notice issues outside of Minecraft as well if that was the case
Bombay-duckOP
I went to the site and got the server.jar they provided, and the older server.jars (from the same source) have always served me well
I refuse to believe it's my RAM
I refuse to believe it's my RAM
Though, I wonder if it has to do with my cold storage. I've been running my server on an HDD 
The HDD hasn't been giving me any bad file reads and it's always worked in the past, but I'll redownload a server.jar to my SSD and see if anything changes.
Will post update in a few hours
The HDD hasn't been giving me any bad file reads and it's always worked in the past, but I'll redownload a server.jar to my SSD and see if anything changes.Will post update in a few hours
Bombay-duckOP
Also if the world/server were corrupted I wonder why then I wouldn't be crashing
I get in and stay in via localhost just fine
as I was testing with my friends, I'd be running around the world as they logged in and DC'd
I get in and stay in via localhost just fine
as I was testing with my friends, I'd be running around the world as they logged in and DC'dIt leads me to think that maybe it's my Internet, but I don't even know where to begin with that.
Bombay-duckOP
But I'm not having Internet problems as far as I know
I can also log into any other server fine
My roommates aren't having Internet problems
I can also log into any other server fine
My roommates aren't having Internet problems
I could maybe have my roommate set up a server off his PC to single out if it's just happening for my PC for whatever reason
Check your ISP if they're inspecting packets and accidentally corrupting Minecraft packets
Try with superflat with and no entities too
Try with packet compression disabled
Just like try to figure out what's causing it i have no idea
@Programmer / Nerd / Human Try with packet compression disabled
Bombay-duckOP
What is this? How would I do this?
@Bombay-duck What is this? How would I do this?
Go to you server.properties set packet compression threshold to something really big like 999999999999
And also disable encryption by disabling online-mode
Bombay-duckOP
that seems like a really shady thing to do but I can do that
To minimize your packets looking like random data and being blocked by the ISP
If they're doing that
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