Proxy-Compatible-Forge Player kicked, but client does not detect that.

OS: Arch Linux 64-bit, latest kernel Forge Version: 47.3.7 Proxy-Compatible-Forge version: Latest

Forge server says com.mojang.authlib.GameProfile@13d3f26[id=!UUID!,name=!My Username!,properties={},legacy=false] (!IP!) lost connection: Disconnected

Stuff in !! is not what it's actually printing, I'm just redacting IP's and stuff.

Aug 26 '24 12:08 Kaloyan501

Are you using Ambassador on your Velocity proxy? What are the full logs on the Forge server/proxy/Forge client? (Use MCLogs to share the logs, as they redact IPs and other sensitive info. Player names/UUIDs are public knowledge and don't really need to be redacted)

Sep 24 '24 17:09 p0t4t0sandwich

Hello together,

I have the same error with my AllTheMods10 Server. I get the same Error Message on my ATm10 NeoForge Server as @Kaloyan501 states in his message above.

Forge server says com.mojang.authlib.GameProfile@13d3f26[id=!UUID!,name=!My Username!,properties={},legacy=false] (!IP!) lost connection: Disconnected

Additionally i get this error log in my Velocity Console:

[22:59:03 ERROR]: [server connection] PlayerXYZ -> atm10: exception encountered in com.velocitypowered.proxy.connection.backend.ConfigSessionHandler@7a3cb38
io.netty.handler.codec.CorruptedFrameException: Error decoding class com.velocitypowered.proxy.protocol.packet.config.KnownPacksPacket Direction CLIENTBOUND Protocol 1.21 State CONFIG ID e
	at com.velocitypowered.proxy.protocol.netty.MinecraftDecoder.handleDecodeFailure(MinecraftDecoder.java:130) ~[velocity.jar:3.4.0-SNAPSHOT (git-cefa3b27-b450)]
	at com.velocitypowered.proxy.protocol.netty.MinecraftDecoder.tryDecode(MinecraftDecoder.java:85) ~[velocity.jar:3.4.0-SNAPSHOT (git-cefa3b27-b450)]
	at com.velocitypowered.proxy.protocol.netty.MinecraftDecoder.channelRead(MinecraftDecoder.java:60) ~[velocity.jar:3.4.0-SNAPSHOT (git-cefa3b27-b450)]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:444) ~[velocity.jar:3.4.0-SNAPSHOT (git-cefa3b27-b450)]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420) ~[velocity.jar:3.4.0-SNAPSHOT (git-cefa3b27-b450)]
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412) ~[velocity.jar:3.4.0-SNAPSHOT (git-cefa3b27-b450)]
	at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:103) ~[velocity.jar:3.4.0-SNAPSHOT (git-cefa3b27-b450)]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:444) ~[velocity.jar:3.4.0-SNAPSHOT (git-cefa3b27-b450)]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420) ~[velocity.jar:3.4.0-SNAPSHOT (git-cefa3b27-b450)]
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412) ~[velocity.jar:3.4.0-SNAPSHOT (git-cefa3b27-b450)]
	at io.netty.handler.timeout.IdleStateHandler.channelRead(IdleStateHandler.java:289) ~[velocity.jar:3.4.0-SNAPSHOT (git-cefa3b27-b450)]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:442) ~[velocity.jar:3.4.0-SNAPSHOT (git-cefa3b27-b450)]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420) ~[velocity.jar:3.4.0-SNAPSHOT (git-cefa3b27-b450)]
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412) ~[velocity.jar:3.4.0-SNAPSHOT (git-cefa3b27-b450)]
	at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:346) ~[velocity.jar:3.4.0-SNAPSHOT (git-cefa3b27-b450)]
	at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:318) ~[velocity.jar:3.4.0-SNAPSHOT (git-cefa3b27-b450)]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:444) ~[velocity.jar:3.4.0-SNAPSHOT (git-cefa3b27-b450)]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420) ~[velocity.jar:3.4.0-SNAPSHOT (git-cefa3b27-b450)]
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412) ~[velocity.jar:3.4.0-SNAPSHOT (git-cefa3b27-b450)]
	at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1357) ~[velocity.jar:3.4.0-SNAPSHOT (git-cefa3b27-b450)]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:440) ~[velocity.jar:3.4.0-SNAPSHOT (git-cefa3b27-b450)]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420) ~[velocity.jar:3.4.0-SNAPSHOT (git-cefa3b27-b450)]
	at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:868) ~[velocity.jar:3.4.0-SNAPSHOT (git-cefa3b27-b450)]
	at io.netty.channel.epoll.AbstractEpollStreamChannel$EpollStreamUnsafe.epollInReady(AbstractEpollStreamChannel.java:799) ~[velocity.jar:3.4.0-SNAPSHOT (git-cefa3b27-b450)]
	at io.netty.channel.epoll.EpollEventLoop.processReady(EpollEventLoop.java:501) ~[velocity.jar:3.4.0-SNAPSHOT (git-cefa3b27-b450)]
	at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:399) ~[velocity.jar:3.4.0-SNAPSHOT (git-cefa3b27-b450)]
	at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997) ~[velocity.jar:3.4.0-SNAPSHOT (git-cefa3b27-b450)]
	at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) ~[velocity.jar:3.4.0-SNAPSHOT (git-cefa3b27-b450)]
	at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) ~[velocity.jar:3.4.0-SNAPSHOT (git-cefa3b27-b450)]
	at java.base/java.lang.Thread.run(Thread.java:1583) [?:?]
Caused by: com.velocitypowered.proxy.util.except.QuietDecoderException: too many known packs
[22:59:03 INFO]: [server connection] PlayerXYZ -> atm10 has disconnected
[22:59:03 ERROR]: [connected player] PlayerXYZ (/88.888.888.88:88888): unable to connect to server atm10
java.io.IOException: Unexpectedly disconnected from remote server
	at com.velocitypowered.proxy.connection.backend.ConfigSessionHandler.disconnected(ConfigSessionHandler.java:335) ~[velocity.jar:3.4.0-SNAPSHOT (git-cefa3b27-b450)]
	at com.velocitypowered.proxy.connection.MinecraftConnection.channelInactive(MinecraftConnection.java:126) ~[velocity.jar:3.4.0-SNAPSHOT (git-cefa3b27-b450)]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:303) ~[velocity.jar:3.4.0-SNAPSHOT (git-cefa3b27-b450)]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:281) ~[velocity.jar:3.4.0-SNAPSHOT (git-cefa3b27-b450)]
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:274) ~[velocity.jar:3.4.0-SNAPSHOT (git-cefa3b27-b450)]
	at io.netty.channel.ChannelInboundHandlerAdapter.channelInactive(ChannelInboundHandlerAdapter.java:81) ~[velocity.jar:3.4.0-SNAPSHOT (git-cefa3b27-b450)]
	at com.velocitypowered.proxy.protocol.netty.PlayPacketQueueOutboundHandler.channelInactive(PlayPacketQueueOutboundHandler.java:79) ~[velocity.jar:3.4.0-SNAPSHOT (git-cefa3b27-b450)]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:303) ~[velocity.jar:3.4.0-SNAPSHOT (git-cefa3b27-b450)]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:281) ~[velocity.jar:3.4.0-SNAPSHOT (git-cefa3b27-b450)]
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:274) ~[velocity.jar:3.4.0-SNAPSHOT (git-cefa3b27-b450)]
	at io.netty.channel.ChannelInboundHandlerAdapter.channelInactive(ChannelInboundHandlerAdapter.java:81) ~[velocity.jar:3.4.0-SNAPSHOT (git-cefa3b27-b450)]
	at com.velocitypowered.proxy.protocol.netty.PlayPacketQueueInboundHandler.channelInactive(PlayPacketQueueInboundHandler.java:75) ~[velocity.jar:3.4.0-SNAPSHOT (git-cefa3b27-b450)]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:303) ~[velocity.jar:3.4.0-SNAPSHOT (git-cefa3b27-b450)]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:281) ~[velocity.jar:3.4.0-SNAPSHOT (git-cefa3b27-b450)]
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:274) ~[velocity.jar:3.4.0-SNAPSHOT (git-cefa3b27-b450)]
	at io.netty.channel.ChannelInboundHandlerAdapter.channelInactive(ChannelInboundHandlerAdapter.java:81) ~[velocity.jar:3.4.0-SNAPSHOT (git-cefa3b27-b450)]
	at io.netty.handler.timeout.IdleStateHandler.channelInactive(IdleStateHandler.java:280) ~[velocity.jar:3.4.0-SNAPSHOT (git-cefa3b27-b450)]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:303) ~[velocity.jar:3.4.0-SNAPSHOT (git-cefa3b27-b450)]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:281) ~[velocity.jar:3.4.0-SNAPSHOT (git-cefa3b27-b450)]
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:274) ~[velocity.jar:3.4.0-SNAPSHOT (git-cefa3b27-b450)]
	at io.netty.handler.codec.ByteToMessageDecoder.channelInputClosed(ByteToMessageDecoder.java:412) ~[velocity.jar:3.4.0-SNAPSHOT (git-cefa3b27-b450)]
	at io.netty.handler.codec.ByteToMessageDecoder.channelInactive(ByteToMessageDecoder.java:377) ~[velocity.jar:3.4.0-SNAPSHOT (git-cefa3b27-b450)]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:303) ~[velocity.jar:3.4.0-SNAPSHOT (git-cefa3b27-b450)]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:281) ~[velocity.jar:3.4.0-SNAPSHOT (git-cefa3b27-b450)]
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:274) ~[velocity.jar:3.4.0-SNAPSHOT (git-cefa3b27-b450)]
	at io.netty.channel.DefaultChannelPipeline$HeadContext.channelInactive(DefaultChannelPipeline.java:1352) ~[velocity.jar:3.4.0-SNAPSHOT (git-cefa3b27-b450)]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:301) ~[velocity.jar:3.4.0-SNAPSHOT (git-cefa3b27-b450)]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:281) ~[velocity.jar:3.4.0-SNAPSHOT (git-cefa3b27-b450)]
	at io.netty.channel.DefaultChannelPipeline.fireChannelInactive(DefaultChannelPipeline.java:850) ~[velocity.jar:3.4.0-SNAPSHOT (git-cefa3b27-b450)]
	at io.netty.channel.AbstractChannel$AbstractUnsafe$7.run(AbstractChannel.java:811) ~[velocity.jar:3.4.0-SNAPSHOT (git-cefa3b27-b450)]
	at io.netty.util.concurrent.AbstractEventExecutor.runTask(AbstractEventExecutor.java:173) ~[velocity.jar:3.4.0-SNAPSHOT (git-cefa3b27-b450)]
	at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:166) ~[velocity.jar:3.4.0-SNAPSHOT (git-cefa3b27-b450)]
	at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:472) ~[velocity.jar:3.4.0-SNAPSHOT (git-cefa3b27-b450)]
	at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:405) ~[velocity.jar:3.4.0-SNAPSHOT (git-cefa3b27-b450)]
	at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997) ~[velocity.jar:3.4.0-SNAPSHOT (git-cefa3b27-b450)]
	at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) ~[velocity.jar:3.4.0-SNAPSHOT (git-cefa3b27-b450)]
	at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) ~[velocity.jar:3.4.0-SNAPSHOT (git-cefa3b27-b450)]
	at java.base/java.lang.Thread.run(Thread.java:1583) [?:?]
[22:59:03 INFO]: [connected player] PlayerXYZ (/88.888.888.88:88888) has disconnected: Unable to connect you to atm10. Please try again later.

Nov 12 '24 23:11 CREW8

Add the -Dvelocity.max-known-packs=264 startup arg to Velocity, replacing the number with roughly the number-of-modsx1.5 to make sure the number is bumped high enough

Hard to tell if it's the same error, since the original user never provided any info

Nov 13 '24 03:11 p0t4t0sandwich

Thank you for the fast reply! This worked and solved the issue!

Nov 13 '24 12:11 CREW8

Closed, as there hasn't been any word from the OP, and the error they provided matches the "too many packs" logging behavior

Dec 17 '24 09:12 p0t4t0sandwich

@p0t4t0sandwich Hello, sorry for bumping this issue and not replying. I am using ambassador on my velocity proxy, I will try the fix you have to @CREW8 and see if it fixes things.

Jan 02 '25 16:01 Kaloyan501

I was using the latest version of Ambassador on my Velocity proxy at the time, will try this fix and if it doesn't work, I will provide the full logs from the proxy, forge client and server.

Jan 02 '25 16:01 Kaloyan501

Ok, the issue did not get fixed when I added the argument. My current args are: java -Xms512M -Xmx512M -Dvelocity.max-known-packs=310 -jar velocity-3.4.0-SNAPSHOT-459.jar nogui for the Velocity Proxy.

Jan 02 '25 17:01 Kaloyan501

Here are the Velocity proxy log: https://mclo.gs/K2Iy1W0 Here are the Paper server logs: https://mclo.gs/NQQbSaw (Connection to it is successful) Here are the Forge server logs: https://mclo.gs/JZBNBj5 What I have checked:

Latest version of Ambassador is installed on the Velocity proxy.
Latest version of PCF is installed on the forge server.
Forwarding secret matches one from Velocity proxy.
Online-mode on the Forge server is set to false
Here is my PCF-common with the key redacted #Modern Forwarding Settings [modernForwarding] forwardingSecret = ""

[commandWrapping] #List of argument types that are not vanilla but are integrated into the server (found in the Vanilla registry) moddedArgumentTypes = ["livingthings:sampler_types"]

Port on Velocity Proxy matches actual server port

Jan 02 '25 17:01 Kaloyan501

@p0t4t0sandwich Please reopen issue.

Jan 02 '25 17:01 Kaloyan501

I don't know if this is relevant info, but all my servers are managed under Crafty Controller, which connect to the server port to get stuff like is the server online, its motd, etc.

Jan 02 '25 17:01 Kaloyan501

I also have 2 questions. First, does it matter in what order I starts the proxy and 2 servers, second is it a problem to place a larger value to -Dvelocity.max-known-packs because I multiplied the amount of mods by 1.8, not 1.5

Jan 02 '25 17:01 Kaloyan501

Do I need to count the mods that are shown in places like the CurseForge client or the amount that is listed on the mods screen in minecraft?

Jan 02 '25 17:01 Kaloyan501

Also, I am using Forge version 47.3.7, will try to update later and post if anything different happens.

Jan 02 '25 17:01 Kaloyan501

I updated ambassador, velocity and PCF before trying the fix.

Jan 02 '25 17:01 Kaloyan501

New development of the bug: At first, when I typed /server survival1, I just got Connection Reset, now minecraft says Please Reconnect. The server still says that it received and empty payload on channel fml:handshake every time.

Jan 02 '25 18:01 Kaloyan501

"Please Reconnect" is normal, that's how Ambassador resets the Forge handshake+resources when switching servers. (read the Ambassador Readme for more information)

Jan 02 '25 21:01 p0t4t0sandwich

@p0t4t0sandwich Yeah, I know, it was just wasn't displaying it, and I just wrote it here if it's related to the issue. I am still receiving the fml:handshake error on the forge server side. Should I make a new issue for this?

Jan 02 '25 21:01 Kaloyan501

Is that after reconnecting to the proxy after the Please Reconnect message? If so, try connecting to the server directly, instead of switching servers. Valkyrien Skies operates really poorly in proxied setups. With the lack of a real error I'd guess that would be the main culprit, hard to tell without additional info regarding the modpack. Note, if the issue is Valkyrien skies, that isn't an issue on PCF's end, and I doubt they'd fix it on their end considering the complexity of their mod.

Jan 03 '25 00:01 p0t4t0sandwich

I get the fml:handshake error when I type /servers to connect to my Forge server and after I try to reconnect to the proxy like the Please reconnect message told me.

Jan 03 '25 01:01 Kaloyan501

No, I mean make the Forge server the primary server and see if that works

Jan 03 '25 02:01 p0t4t0sandwich

With the lack of a real error I'd guess that would be the main culprit, hard to tell without additional info regarding the modpack.

Here is the modpack I am using: https://www.curseforge.com/minecraft/modpacks/workload/files/6046700

Jan 03 '25 11:01 Kaloyan501

I also noticed I had a mod called Simple Login on the server, will try to remove that, see if it works, and if it doesn't, try to change the forge server to primary.

Jan 03 '25 11:01 Kaloyan501

Ok, so I haven't removed Simple Login yet, but I noticed when I try to reconnect to the Forge server trough the proxy after the disconnect message, my client gets stuck on Encrypting... for a solid 30 seconds and then just says Disconnected. When It is on encrypting, nothing shows up on the Forge server console, when the client says Disconected, nothing shows up on the console again (no FML error) but the proxy says [connected player] MineManiack (<REDACTED>): read timed out

Jan 03 '25 11:01 Kaloyan501

Simple Login is not the problem, I also get stuck on Encrypting when I change the Forge server to the main one in the proxy. No message is displayed on the Forge server, but the proxy says [14:01:01 ERROR]: [connected player] MineManiack (/192.168.0.101:58578): read timed out. There is some communication between the proxy and the server, because when I set it as the secondary and try to connect from my Paper server, it throws the FML error and shows the disconnected message.

Jan 03 '25 12:01 Kaloyan501

When I connect to the server directly, everything works just fine.

Jan 03 '25 12:01 Kaloyan501

Sorry, missed these issue comments in my notifications. Please share the full, unedited logs, from your Client, Velocity Proxy, and Forge server (https://mclo.gs/) And when you encounter errors in Github issues, please share the full log, along with the error message, otherwise it's nearly impossible to help.

(also note, Forge has an issue with the recipe book packet and vanilla servers, fixed with https://modrinth.com/plugin/modpacketfix)

Jan 18 '25 21:01 p0t4t0sandwich

Here are the Velocity proxy log: https://mclo.gs/K2Iy1W0 Here are the Paper server logs: https://mclo.gs/NQQbSaw (Connection to it is successful) Here are the Forge server logs: https://mclo.gs/JZBNBj5 What I have checked:

Latest version of Ambassador is installed on the Velocity proxy.

Latest version of PCF is installed on the forge server.

Forwarding secret matches one from Velocity proxy.

Online-mode on the Forge server is set to false

Here is my PCF-common with the key redacted #Modern Forwarding Settings [modernForwarding] forwardingSecret = ""

[commandWrapping] #List of argument types that are not vanilla but are integrated into the server (found in the Vanilla registry) moddedArgumentTypes = ["livingthings:sampler_types"]

Port on Velocity Proxy matches actual server port

I already did that. I don't have the client logs, will retest everything with new versions of Forge, Paper, Velocity, Ambassador and PCF is any new versions are available and send all the logs, hopefully later today when I have time.

Jan 18 '25 21:01 Kaloyan501

I more mean, share the logs from your tests, as it'll have updated info from that attempt

Jan 19 '25 01:01 p0t4t0sandwich

valkyrienskies is also a known "probably incompatible" mod when it comes to switching servers, in which case you'd make the Forge server the primary and see if that connects fine. If it does, then you'd use Velocity's forced-hosts feature to proxy the server on a different subdomain.

Jan 19 '25 01:01 p0t4t0sandwich