Internal exception io netty handler codec encoderexception java lang out of memory error

In order to do pipelining, we implemented this helper method:

    def answer(rsp: FullHttpResponse) {
      ctx.nextOutboundMessageBuffer().add(rsp)
      if (!keepAlive) ctx.flush().addListener(ChannelFutureListener.CLOSE)
    }

When using this, we have massive issues where clients don’t get their according response. We also get lots of these:

03:12:48.148 WARN  ThruputHandler$ - io.netty.handler.codec.EncoderException: java.lang.OutOfMemoryError: Direct buffer memory
io.netty.handler.codec.EncoderException: java.lang.OutOfMemoryError: Direct buffer memory
at io.netty.handler.codec.MessageToByteEncoder.flush(MessageToByteEncoder.java:81)
at io.netty.channel.DefaultChannelHandlerContext.invokeFlush0(DefaultChannelHandlerContext.java:1525)
at io.netty.channel.DefaultChannelHandlerContext.write0(DefaultChannelHandlerContext.java:1663)
at io.netty.channel.DefaultChannelHandlerContext.access$2700(DefaultChannelHandlerContext.java:39)
at io.netty.channel.DefaultChannelHandlerContext$24.run(DefaultChannelHandlerContext.java:1638)
at io.netty.channel.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:259)
at io.netty.channel.socket.nio.NioEventLoop.run(NioEventLoop.java:298)
at io.netty.channel.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:110)
at java.lang.Thread.run(Thread.java:722)
Caused by: java.lang.OutOfMemoryError: Direct buffer memory
at java.nio.Bits.reserveMemory(Bits.java:658)
at java.nio.DirectByteBuffer.<init>(DirectByteBuffer.java:123)
at java.nio.ByteBuffer.allocateDirect(ByteBuffer.java:306)
at io.netty.buffer.PoolArena$DirectArena.newUnpooledChunk(PoolArena.java:369)
at io.netty.buffer.PoolArena.allocateHuge(PoolArena.java:158)
at io.netty.buffer.PoolArena.allocate(PoolArena.java:135)
at io.netty.buffer.PoolArena.reallocate(PoolArena.java:232)
at io.netty.buffer.PooledByteBuf.capacity(PooledByteBuf.java:111)
at io.netty.buffer.AbstractByteBuf.ensureWritable(AbstractByteBuf.java:261)
at io.netty.handler.codec.http.websocketx.WebSocket08FrameEncoder.encode(WebSocket08FrameEncoder.java:150)
at io.netty.handler.codec.http.websocketx.WebSocket08FrameEncoder.encode(WebSocket08FrameEncoder.java:72)
at io.netty.handler.codec.MessageToByteEncoder.flush(MessageToByteEncoder.java:76)... 8 more

If we use the old write, everything is fine:

    def answer(rsp: FullHttpResponse) {
      val f = ctx.write(rsp)
      if (!keepAlive) f.addListener(ChannelFutureListener.CLOSE)
    }

I have created 2 Microservices with Spring Boot (version 1.5.1 RELEASE), Spring Cloud(Edgware.SR3), Spring Cloud Starter Config (version 1.4.3 RELEASE) and Netflix’s Eureka naming server (Spring Cloud Starter Netflix Eureka Client/Server 1.4.4 RELEASE):

1. A Eureka Server (a service meant to register microservices)
2. A Eureka Client (a DB service meant for save/update operations)

Eureka Client is a simple Restful Service with a single@PostMapping annotated method which accepts a sizeable object as an argument (@RequestBody MyObject object).

Eureka client registers itself with Eureka server successfully.

Then with the help of Spring Boot Webflux, I try to access my Eureka Client with the help of class WebClient which is introduced in Spring 5 and is an improvisation on AsyncRestTemplate class. I do something like below :

WebClient webClient = WebClient.create();
reactor.core.publisher.Mono result = (Mono) webClient.post()
.uri("http://localhost:8080/eureka-client")
.body(BodyInserters.fromObject(//myComplexObject here))
.retrieve()
.bodyToMono(String.class);

result.subscribe();

On debugging, I found that I get OOM exception after last line of above code.

io.netty.handler.codec.EncoderException: java.lang.OutOfMemoryError

Full Stack Trace below :

[reactor-http-nio-4] WARN  io.netty.util.concurrent.AbstractEventExecutor  - A task raised an exception. Task: reactor.ipc.netty.channel.ContextHandler$$Lambda$401/11401686@10ae5a2

reactor.core.Exceptions$ErrorCallbackNotImplemented: io.netty.handler.codec.EncoderException: java.lang.OutOfMemoryError

Caused by: io.netty.handler.codec.EncoderException: java.lang.OutOfMemoryError

                at io.netty.handler.codec.MessageToMessageEncoder.write(MessageToMessageEncoder.java:106)

                at io.netty.channel.CombinedChannelDuplexHandler.write(CombinedChannelDuplexHandler.java:348)

                at io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:738)

                at io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:730)

                at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:816)

                at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:723)

                at reactor.ipc.netty.channel.ChannelOperationsHandler.doWrite(ChannelOperationsHandler.java:291)

                at reactor.ipc.netty.channel.ChannelOperationsHandler.drain(ChannelOperationsHandler.java:465)

                at reactor.ipc.netty.channel.ChannelOperationsHandler.flush(ChannelOperationsHandler.java:191)

                at io.netty.channel.AbstractChannelHandlerContext.invokeFlush0(AbstractChannelHandlerContext.java:776)

                at io.netty.channel.AbstractChannelHandlerContext.invokeWriteAndFlush(AbstractChannelHandlerContext.java:802)

                at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:814)

                at io.netty.channel.AbstractChannelHandlerContext.writeAndFlush(AbstractChannelHandlerContext.java:794)

                at io.netty.channel.AbstractChannelHandlerContext.writeAndFlush(AbstractChannelHandlerContext.java:831)

                at io.netty.channel.DefaultChannelPipeline.writeAndFlush(DefaultChannelPipeline.java:1051)

                at io.netty.channel.AbstractChannel.writeAndFlush(AbstractChannel.java:300)

                at reactor.ipc.netty.http.HttpOperations.lambda$then$0(HttpOperations.java:135)

                at reactor.ipc.netty.FutureMono.lambda$deferFuture$0(FutureMono.java:68)

                at reactor.ipc.netty.FutureMono$DeferredFutureMono.subscribe(FutureMono.java:134)

                at reactor.core.publisher.Mono.subscribe(Mono.java:3008)

                at reactor.core.publisher.MonoIgnoreThen$ThenIgnoreMain.drain(MonoIgnoreThen.java:167)

                at reactor.core.publisher.MonoIgnoreThen.subscribe(MonoIgnoreThen.java:56)

                at reactor.core.publisher.Mono.subscribe(Mono.java:3008)

                at reactor.core.publisher.FluxConcatIterable$ConcatIterableSubscriber.onComplete(FluxConcatIterable.java:141)

                at reactor.core.publisher.FluxConcatIterable.subscribe(FluxConcatIterable.java:60)

                at reactor.core.publisher.MonoSourceFlux.subscribe(MonoSourceFlux.java:47)

                at reactor.ipc.netty.channel.ChannelOperations.applyHandler(ChannelOperations.java:380)

                at reactor.ipc.netty.http.client.HttpClientOperations.onHandlerStart(HttpClientOperations.java:501)

                at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:163)

                at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:404)

                at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:463)

                at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:886)

                at java.lang.Thread.run(Thread.java:745)

Caused by: java.lang.OutOfMemoryError

                at sun.misc.Unsafe.allocateMemory(Native Method)

                at io.netty.util.internal.PlatformDependent0.allocateDirectNoCleaner(PlatformDependent0.java:430)

                at io.netty.util.internal.PlatformDependent.allocateDirectNoCleaner(PlatformDependent.java:596)

                at io.netty.buffer.PoolArena$DirectArena.allocateDirect(PoolArena.java:764)

                at io.netty.buffer.PoolArena$DirectArena.newChunk(PoolArena.java:740)

                at io.netty.buffer.PoolArena.allocateNormal(PoolArena.java:244)

                at io.netty.buffer.PoolArena.allocate(PoolArena.java:214)

                at io.netty.buffer.PoolArena.allocate(PoolArena.java:146)

                at io.netty.buffer.PooledByteBufAllocator.newDirectBuffer(PooledByteBufAllocator.java:324)

                at io.netty.buffer.AbstractByteBufAllocator.directBuffer(AbstractByteBufAllocator.java:185)

                at io.netty.buffer.AbstractByteBufAllocator.directBuffer(AbstractByteBufAllocator.java:176)

                at io.netty.buffer.AbstractByteBufAllocator.buffer(AbstractByteBufAllocator.java:113)

                at io.netty.handler.codec.http.HttpObjectEncoder.encode(HttpObjectEncoder.java:92)

                at io.netty.handler.codec.http.HttpClientCodec$Encoder.encode(HttpClientCodec.java:167)

                at io.netty.handler.codec.MessageToMessageEncoder.write(MessageToMessageEncoder.java:88)

                ... 32 more

I have jackson library in my classpath and rely on spring to serialize my complex object while passing it to Restful service. I am not sure what may cause this. Any pointers please?

Minecraft Forums

HELP! I can’t connect to ANY servers! :((

I’m using minecraft 1.7.4. So far the only versions I can play is 1.7.4 and 1.7.9.

Btw, is there any good virus scanners that you can introduce?

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• Minecraft: zeldalover52
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Notch just said creepers are ready to be able to live with humans!

WE’RE ALL GONNA DIE.

I told you you would be scared.

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So I was playing minecraft earlier today but when I tried to connect to multiplayer servers, it keep saying the following:

Internal Exception: io.netty.handler.codec.DecoderException: java.util.zip.ZipException: invalid bit length repeat

Internal Exception: io.netty.handler.codec.DecoderException: java.util.zip.ZipException: Bad packet id **********

Internal Exception: io.netty.handler.codec.DecoderException: java.io.IOException: Bad compressed data format

Failed to login: Invalid session (Try restarting your game)

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Minecraft Forums

HELP! I can’t connect to ANY servers! :((

I’m using minecraft 1.7.4. So far the only versions I can play is 1.7.4 and 1.7.9.

Btw, is there any good virus scanners that you can introduce?

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• Member Details

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• Coal Miner
• Join Date: 10/18/2013
• Posts: 109
• Minecraft: zeldalover52
• Xbox: NOPE
• PSN: NOPE
• Member Details

Notch just said creepers are ready to be able to live with humans!

WE’RE ALL GONNA DIE.

I told you you would be scared.

• Out of the Water
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• The Meaning of Life, the Universe, and Everything.
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So I was playing minecraft earlier today but when I tried to connect to multiplayer servers, it keep saying the following:

Internal Exception: io.netty.handler.codec.DecoderException: java.util.zip.ZipException: invalid bit length repeat

Internal Exception: io.netty.handler.codec.DecoderException: java.util.zip.ZipException: Bad packet id **********

Internal Exception: io.netty.handler.codec.DecoderException: java.io.IOException: Bad compressed data format

Failed to login: Invalid session (Try restarting your game)

Источник

Internal Exception: io.netty.handler.codec.EncoderException #489

I have a problem, if i try to join my server then i got kicked! In my console is shown this:

[13:16:35] [Server thread/WARN]: [ViaVersion] You are running a development version, please report any bugs to GitHub.
[13:16:42] [Thread-23/INFO]: UUID of player PixlByte is 97d8882e-c5ea-49fd-b5f9-6f1b69b953ff
[13:16:43] [Server thread/INFO]: PixlByte[/95.90.248.167:59250] logged in with entity id 770 at ([Lobby]66.0, 64.0, -396.0)
[13:16:43] [Netty Epoll Server IO #0/ERROR]: java.lang.NullPointerException
[13:16:43] [Server thread/INFO]: PixlByte lost connection: Internal Exception: io.netty.handler.codec.EncoderException: us.myles.ViaVersion.exception.InformativeException: Please post this error to http://github.com/MylesIsCool/ViaVersion/issues
, Pair, Pair, Pair], Packet ID: 4>
Actual Error:

Q: What version of ViaVersion are you using? Type /ver viaversion
A: ViaVersion version 0.9.9-SNAPSHOT

Q: What version of Spigot are you using? Type /ver
A: Spigot 1.8.8-R0.1-SNAPSHOT

Q: What plugins are you using? Type /plugins
A: TTA, NCP, AdvancedPortals, Citizensm WorldEdit, Essentials, VoxelSniper, BKCommonLib, EssentialsChat, PermissionsEx, NoWeather, ViaVersion, HolographicDisplays, EssentialsSpawn, Tenskiobby, WorldGuard, CTSNC!

Q: Are you using any additional software like BungeeCord? If so, what software and version? (Please list your plugins as well)
A: Yes i use BC but with no plugins!

Q: How does this error happen? login? Using an item?
A: On login!

Q: Is there an error in the console? Use pastebin.com. Is there a kick message?
A: Jep, [13:16:35] [Server thread/WARN]: [ViaVersion] You are running a development version, please report any bugs to GitHub. [13:16:42] [Thread-23/INFO]: UUID of player PixlByte is 97d8882e-c5ea-49fd-b5f9-6f1b69b953ff [13:16:43] [Server thread/INFO]: PixlByte[/95.90.248.167:59250] logged in with entity id 770 at ([Lobby]66.0, 64.0, -396.0) [13:16:43] [Netty Epoll Server IO #0/ERROR]: java.lang.NullPointerException [13:16:43] [Server thread/INFO]: PixlByte lost connection: Internal Exception: io.netty.handler.codec.EncoderException: us.myles.ViaVersion.exception.InformativeException: Please post this error to http://github.com/MylesIsCool/ViaVersion/issues , Pair, Pair, Pair], Packet ID: 4> Actual Error:

The text was updated successfully, but these errors were encountered:

What is the disconnect message and the full error in the console?

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Connection failing 9/10 io.netty.handler.codec.decoderexception java.lang.nullpointerexception #2407

Describe the bug
Every time I try to cconnect to my server, I get:
Minecraft Error internal exception io.netty.handler.codec.decoderexception java.lang.nullpointerexception

To Reproduce
Steps to reproduce the behavior:

1. Connect to an online server

Screenshots

Additional context
I tried Java8/11 on client and server and curseapp and MultiMC. Sometimes I am able to connect, my friends dont have the problem. Server was started the usual way and with itzg docker java11 image, no changes.

Logs
Server-Log:

The text was updated successfully, but these errors were encountered:

i’m having the same issue

Hmmm, fresh Windows Install doesnt change anything, so its either the server or account related I guess.

Same issue here.

Steps I’ve taken to rule out issues:

• Figured out it is not related to properly logging out prior to game closing (tested ending process and quitting server using GUI, no change)
• Used clean install of modpack from curseforge loader, no change
• Tried restarting server with no modification (server is running in docker container, using the official curseforge image), no change
• Tried restarting client, no change

Edit: further testing:

• Tried exiting and re-joining properly, no change
• Now, whenever I exit and re-join, it causes this error

So far, the only workaround I have is to restore from the most recent backup, which allows me to log back in.

Edit: at this point, every time I log off and back on, I have to do the workaround above.

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Minecraft Forums

This thread was marked as Locked by user-6840779 .

Internal Exception: io.netty.handler.codec.DecoderException

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Recently, I have been experiencing an issue with Minecraft Multiplayer on 1.8. I usually play on mc.hypixel.net but every minute or so, I get kicked from the server and get this error:

Internal Exception: io.netty.handler.codec.DecoderException: java.util.zip.DataFormatException: incorrect header check

Internal Exception: io.netty.handler.codec.DecoderException: Badly compressed packet — size of (some random number) is below server threshold of 256

I tried using the latest version of Minecraft (1.8.3) and it still kept kicking me. I am not sure if switching to 1.7 will help but I want to use 1.8 because some games require it.

I do use a version of 1.8 with Optifine
I tried restarting my router several times (without any results)
I tried using a non-Optifine version of 1.8 (once again, without any results)

If you know anything about this problem, please help. It makes playing almost impossible and extremely frustrating.

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