ClassNotFoundException for HttpDecoderConfig using reactor-netty-http

[MSchacherbauer]

While upgrading to SpringBoot 3.2.4 using reactor-netty-http we noticed our previously running tests failing, due to the ClassNotFoundException for HttpDecoderConfig.

The managed Artifact netty-codec-http 4.1.96.Final does not contain the HttpDecoderConfig.
Manually overwriting the version to 4.1.107.Final fixes the problem.

Expected Behavior

The managed version for netty-codec-http should be 4.1.107.Final

Actual Behavior

The managed version for netty-codec-http should is 4.1.96.Final which does not contain HttpDecoderConfig

StackTrace

java.lang.NoClassDefFoundError: io/netty/handler/codec/http/HttpDecoderConfig
	at reactor.netty.http.client.HttpClientConfig.configureHttp11Pipeline(HttpClientConfig.java:712) ~[reactor-netty-http-1.1.17.jar:1.1.17]
	at reactor.netty.http.client.HttpClientConfig$HttpClientChannelInitializer.onChannelInit(HttpClientConfig.java:1013) ~[reactor-netty-http-1.1.17.jar:1.1.17]
	at reactor.netty.transport.TransportConfig$TransportChannelInitializer.initChannel(TransportConfig.java:418) ~[reactor-netty-core-1.1.17.jar:1.1.17]
	at io.netty.channel.ChannelInitializer.initChannel(ChannelInitializer.java:129) ~[netty-transport-4.1.96.Final.jar:4.1.96.Final]
	at io.netty.channel.ChannelInitializer.handlerAdded(ChannelInitializer.java:112) ~[netty-transport-4.1.96.Final.jar:4.1.96.Final]
	at io.netty.channel.AbstractChannelHandlerContext.callHandlerAdded(AbstractChannelHandlerContext.java:1114) ~[netty-transport-4.1.96.Final.jar:4.1.96.Final]
	at io.netty.channel.DefaultChannelPipeline.callHandlerAdded0(DefaultChannelPipeline.java:609) ~[netty-transport-4.1.96.Final.jar:4.1.96.Final]
	at io.netty.channel.DefaultChannelPipeline.addFirst(DefaultChannelPipeline.java:181) ~[netty-transport-4.1.96.Final.jar:4.1.96.Final]
	at io.netty.channel.DefaultChannelPipeline.addFirst(DefaultChannelPipeline.java:358) ~[netty-transport-4.1.96.Final.jar:4.1.96.Final]
	at io.netty.channel.DefaultChannelPipeline.addFirst(DefaultChannelPipeline.java:339) ~[netty-transport-4.1.96.Final.jar:4.1.96.Final]
	at reactor.netty.resources.DefaultPooledConnectionProvider$PooledConnectionAllocator$PooledConnectionInitializer.initChannel(DefaultPooledConnectionProvider.java:571) ~[reactor-netty-core-1.1.17.jar:1.1.17]
	at io.netty.channel.ChannelInitializer.initChannel(ChannelInitializer.java:129) ~[netty-transport-4.1.96.Final.jar:4.1.96.Final]
	at io.netty.channel.ChannelInitializer.handlerAdded(ChannelInitializer.java:112) ~[netty-transport-4.1.96.Final.jar:4.1.96.Final]
	at io.netty.channel.AbstractChannelHandlerContext.callHandlerAdded(AbstractChannelHandlerContext.java:1114) ~[netty-transport-4.1.96.Final.jar:4.1.96.Final]
	at io.netty.channel.DefaultChannelPipeline.callHandlerAdded0(DefaultChannelPipeline.java:609) ~[netty-transport-4.1.96.Final.jar:4.1.96.Final]
	at io.netty.channel.DefaultChannelPipeline.access$100(DefaultChannelPipeline.java:46) ~[netty-transport-4.1.96.Final.jar:4.1.96.Final]
	at io.netty.channel.DefaultChannelPipeline$PendingHandlerAddedTask.execute(DefaultChannelPipeline.java:1463) ~[netty-transport-4.1.96.Final.jar:4.1.96.Final]
	at io.netty.channel.DefaultChannelPipeline.callHandlerAddedForAllHandlers(DefaultChannelPipeline.java:1115) ~[netty-transport-4.1.96.Final.jar:4.1.96.Final]
	at io.netty.channel.DefaultChannelPipeline.invokeHandlerAddedIfNeeded(DefaultChannelPipeline.java:650) ~[netty-transport-4.1.96.Final.jar:4.1.96.Final]
	at io.netty.channel.AbstractChannel$AbstractUnsafe.register0(AbstractChannel.java:514) ~[netty-transport-4.1.96.Final.jar:4.1.96.Final]
	at io.netty.channel.AbstractChannel$AbstractUnsafe.register(AbstractChannel.java:480) ~[netty-transport-4.1.96.Final.jar:4.1.96.Final]
	at reactor.netty.transport.TransportConnector.doInitAndRegister(TransportConnector.java:293) ~[reactor-netty-core-1.1.17.jar:1.1.17]
	at reactor.netty.transport.TransportConnector.connect(TransportConnector.java:164) ~[reactor-netty-core-1.1.17.jar:1.1.17]
	at reactor.netty.resources.DefaultPooledConnectionProvider$PooledConnectionAllocator.lambda$connectChannel$0(DefaultPooledConnectionProvider.java:540) ~[reactor-netty-core-1.1.17.jar:1.1.17]
	at reactor.core.publisher.MonoCreate.subscribe(MonoCreate.java:61) ~[reactor-core-3.6.4.jar:3.6.4]
	at reactor.core.publisher.Mono.subscribe(Mono.java:4568) ~[reactor-core-3.6.4.jar:3.6.4]
	at reactor.core.publisher.Mono.subscribeWith(Mono.java:4634) ~[reactor-core-3.6.4.jar:3.6.4]
	at reactor.core.publisher.Mono.subscribe(Mono.java:4534) ~[reactor-core-3.6.4.jar:3.6.4]
	at reactor.core.publisher.Mono.subscribe(Mono.java:4470) ~[reactor-core-3.6.4.jar:3.6.4]
	at reactor.netty.internal.shaded.reactor.pool.SimpleDequePool.drainLoop(SimpleDequePool.java:442) ~[reactor-netty-core-1.1.17.jar:1.1.17]
	at reactor.netty.internal.shaded.reactor.pool.SimpleDequePool.pendingOffer(SimpleDequePool.java:607) ~[reactor-netty-core-1.1.17.jar:1.1.17]
	at reactor.netty.internal.shaded.reactor.pool.SimpleDequePool.doAcquire(SimpleDequePool.java:301) ~[reactor-netty-core-1.1.17.jar:1.1.17]
	at reactor.netty.internal.shaded.reactor.pool.AbstractPool$Borrower.request(AbstractPool.java:436) ~[reactor-netty-core-1.1.17.jar:1.1.17]
	at reactor.core.publisher.FluxContextWrite$ContextWriteSubscriber.request(FluxContextWrite.java:136) ~[reactor-core-3.6.4.jar:3.6.4]
	at reactor.core.publisher.FluxOnAssembly$OnAssemblySubscriber.request(FluxOnAssembly.java:649) ~[reactor-core-3.6.4.jar:3.6.4]
	at reactor.netty.resources.DefaultPooledConnectionProvider$DisposableAcquire.onSubscribe(DefaultPooledConnectionProvider.java:216) ~[reactor-netty-core-1.1.17.jar:1.1.17]
	at reactor.core.publisher.FluxOnAssembly$OnAssemblySubscriber.onSubscribe(FluxOnAssembly.java:633) ~[reactor-core-3.6.4.jar:3.6.4]
	at reactor.core.publisher.FluxContextWrite$ContextWriteSubscriber.onSubscribe(FluxContextWrite.java:101) ~[reactor-core-3.6.4.jar:3.6.4]
	at reactor.netty.internal.shaded.reactor.pool.SimpleDequePool$QueueBorrowerMono.subscribe(SimpleDequePool.java:725) ~[reactor-netty-core-1.1.17.jar:1.1.17]
	at reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:76) ~[reactor-core-3.6.4.jar:3.6.4]
	at reactor.netty.resources.PooledConnectionProvider.lambda$acquire$3(PooledConnectionProvider.java:185) ~[reactor-netty-core-1.1.17.jar:1.1.17]
	at reactor.core.publisher.MonoCreate.subscribe(MonoCreate.java:61) ~[reactor-core-3.6.4.jar:3.6.4]
	at reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:76) ~[reactor-core-3.6.4.jar:3.6.4]
	at reactor.netty.http.client.HttpClientConnect$MonoHttpConnect.lambda$subscribe$0(HttpClientConnect.java:273) ~[reactor-netty-http-1.1.17.jar:1.1.17]
	at reactor.core.publisher.MonoCreate.subscribe(MonoCreate.java:61) ~[reactor-core-3.6.4.jar:3.6.4]
	at reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:76) ~[reactor-core-3.6.4.jar:3.6.4]
	at reactor.core.publisher.FluxRetryWhen$RetryWhenMainSubscriber.resubscribe(FluxRetryWhen.java:220) ~[reactor-core-3.6.4.jar:3.6.4]
	at reactor.core.publisher.FluxRetryWhen$RetryWhenOtherSubscriber.onNext(FluxRetryWhen.java:274) ~[reactor-core-3.6.4.jar:3.6.4]
	at reactor.core.publisher.FluxOnAssembly$OnAssemblySubscriber.onNext(FluxOnAssembly.java:539) ~[reactor-core-3.6.4.jar:3.6.4]
	at reactor.core.publisher.FluxOnAssembly$OnAssemblySubscriber.onNext(FluxOnAssembly.java:539) ~[reactor-core-3.6.4.jar:3.6.4]
	at reactor.core.publisher.FluxContextWrite$ContextWriteSubscriber.onNext(FluxContextWrite.java:107) ~[reactor-core-3.6.4.jar:3.6.4]
	at reactor.core.publisher.FluxOnAssembly$OnAssemblySubscriber.onNext(FluxOnAssembly.java:539) ~[reactor-core-3.6.4.jar:3.6.4]
	at reactor.core.publisher.FluxConcatMapNoPrefetch$FluxConcatMapNoPrefetchSubscriber.innerNext(FluxConcatMapNoPrefetch.java:259) ~[reactor-core-3.6.4.jar:3.6.4]
	at reactor.core.publisher.FluxConcatMap$ConcatMapInner.onNext(FluxConcatMap.java:865) ~[reactor-core-3.6.4.jar:3.6.4]
	at reactor.core.publisher.FluxOnAssembly$OnAssemblySubscriber.onNext(FluxOnAssembly.java:539) ~[reactor-core-3.6.4.jar:3.6.4]
	at reactor.core.publisher.FluxContextWrite$ContextWriteSubscriber.onNext(FluxContextWrite.java:107) ~[reactor-core-3.6.4.jar:3.6.4]
	at reactor.core.publisher.FluxOnAssembly$OnAssemblySubscriber.onNext(FluxOnAssembly.java:539) ~[reactor-core-3.6.4.jar:3.6.4]
	at reactor.core.publisher.MonoFlatMap$FlatMapMain.secondComplete(MonoFlatMap.java:245) ~[reactor-core-3.6.4.jar:3.6.4]
	at reactor.core.publisher.MonoFlatMap$FlatMapInner.onNext(MonoFlatMap.java:305) ~[reactor-core-3.6.4.jar:3.6.4]
	at reactor.core.publisher.FluxOnAssembly$OnAssemblySubscriber.onNext(FluxOnAssembly.java:539) ~[reactor-core-3.6.4.jar:3.6.4]
	at reactor.core.publisher.MonoIgnoreThen$ThenIgnoreMain.complete(MonoIgnoreThen.java:294) ~[reactor-core-3.6.4.jar:3.6.4]
	at reactor.core.publisher.MonoIgnoreThen$ThenIgnoreMain.onNext(MonoIgnoreThen.java:188) ~[reactor-core-3.6.4.jar:3.6.4]
	at reactor.core.publisher.MonoIgnoreThen$ThenIgnoreMain.subscribeNext(MonoIgnoreThen.java:237) ~[reactor-core-3.6.4.jar:3.6.4]
	at reactor.core.publisher.MonoIgnoreThen.subscribe(MonoIgnoreThen.java:51) ~[reactor-core-3.6.4.jar:3.6.4]
	at reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:76) ~[reactor-core-3.6.4.jar:3.6.4]
	at reactor.core.publisher.MonoFlatMap$FlatMapMain.onNext(MonoFlatMap.java:165) ~[reactor-core-3.6.4.jar:3.6.4]
	at reactor.core.publisher.FluxOnAssembly$OnAssemblySubscriber.onNext(FluxOnAssembly.java:539) ~[reactor-core-3.6.4.jar:3.6.4]
	at reactor.core.publisher.MonoIgnoreThen$ThenIgnoreMain.request(MonoIgnoreThen.java:164) ~[reactor-core-3.6.4.jar:3.6.4]
	at reactor.core.publisher.FluxOnAssembly$OnAssemblySubscriber.request(FluxOnAssembly.java:649) ~[reactor-core-3.6.4.jar:3.6.4]
	at reactor.core.publisher.MonoFlatMap$FlatMapMain.request(MonoFlatMap.java:194) ~[reactor-core-3.6.4.jar:3.6.4]
	at reactor.core.publisher.FluxOnAssembly$OnAssemblySubscriber.request(FluxOnAssembly.java:649) ~[reactor-core-3.6.4.jar:3.6.4]
	at reactor.core.publisher.FluxContextWrite$ContextWriteSubscriber.request(FluxContextWrite.java:136) ~[reactor-core-3.6.4.jar:3.6.4]
	at reactor.core.publisher.FluxOnAssembly$OnAssemblySubscriber.request(FluxOnAssembly.java:649) ~[reactor-core-3.6.4.jar:3.6.4]
	at reactor.core.publisher.Operators$MultiSubscriptionSubscriber.request(Operators.java:2331) ~[reactor-core-3.6.4.jar:3.6.4]
	at reactor.core.publisher.FluxConcatMapNoPrefetch$FluxConcatMapNoPrefetchSubscriber.request(FluxConcatMapNoPrefetch.java:339) ~[reactor-core-3.6.4.jar:3.6.4]
	at reactor.core.publisher.FluxOnAssembly$OnAssemblySubscriber.request(FluxOnAssembly.java:649) ~[reactor-core-3.6.4.jar:3.6.4]
	at reactor.core.publisher.FluxContextWrite$ContextWriteSubscriber.request(FluxContextWrite.java:136) ~[reactor-core-3.6.4.jar:3.6.4]
	at reactor.core.publisher.FluxOnAssembly$OnAssemblySubscriber.request(FluxOnAssembly.java:649) ~[reactor-core-3.6.4.jar:3.6.4]
	at reactor.core.publisher.FluxOnAssembly$OnAssemblySubscriber.request(FluxOnAssembly.java:649) ~[reactor-core-3.6.4.jar:3.6.4]
	at reactor.core.publisher.Operators$DeferredSubscription.request(Operators.java:1743) ~[reactor-core-3.6.4.jar:3.6.4]
	at reactor.core.publisher.FluxRetryWhen$RetryWhenMainSubscriber.onError(FluxRetryWhen.java:196) ~[reactor-core-3.6.4.jar:3.6.4]
	at reactor.core.publisher.FluxOnAssembly$OnAssemblySubscriber.onError(FluxOnAssembly.java:544) ~[reactor-core-3.6.4.jar:3.6.4]
	at reactor.core.publisher.MonoCreate$DefaultMonoSink.error(MonoCreate.java:205) ~[reactor-core-3.6.4.jar:3.6.4]
	at reactor.netty.http.client.HttpClientConnect$MonoHttpConnect$ClientTransportSubscriber.onError(HttpClientConnect.java:311) ~[reactor-netty-http-1.1.17.jar:1.1.17]
	at reactor.core.publisher.FluxOnAssembly$OnAssemblySubscriber.onError(FluxOnAssembly.java:544) ~[reactor-core-3.6.4.jar:3.6.4]
	at reactor.core.publisher.MonoCreate$DefaultMonoSink.error(MonoCreate.java:205) ~[reactor-core-3.6.4.jar:3.6.4]
	at reactor.netty.resources.DefaultPooledConnectionProvider$DisposableAcquire.onError(DefaultPooledConnectionProvider.java:172) ~[reactor-netty-core-1.1.17.jar:1.1.17]
	at reactor.netty.internal.shaded.reactor.pool.AbstractPool$Borrower.fail(AbstractPool.java:488) ~[reactor-netty-core-1.1.17.jar:1.1.17]
	at reactor.netty.internal.shaded.reactor.pool.SimpleDequePool.lambda$drainLoop$9(SimpleDequePool.java:436) ~[reactor-netty-core-1.1.17.jar:1.1.17]
	at reactor.core.publisher.FluxDoOnEach$DoOnEachSubscriber.onError(FluxDoOnEach.java:186) ~[reactor-core-3.6.4.jar:3.6.4]
	at reactor.core.publisher.FluxOnAssembly$OnAssemblySubscriber.onError(FluxOnAssembly.java:544) ~[reactor-core-3.6.4.jar:3.6.4]
	at reactor.core.publisher.MonoCreate$DefaultMonoSink.error(MonoCreate.java:205) ~[reactor-core-3.6.4.jar:3.6.4]
	at reactor.netty.resources.DefaultPooledConnectionProvider$PooledConnectionAllocator$PooledConnectionInitializer.onError(DefaultPooledConnectionProvider.java:583) ~[reactor-netty-core-1.1.17.jar:1.1.17]
	at reactor.core.publisher.FluxOnAssembly$OnAssemblySubscriber.onError(FluxOnAssembly.java:544) ~[reactor-core-3.6.4.jar:3.6.4]
	at reactor.core.publisher.MonoFlatMap$FlatMapMain.secondError(MonoFlatMap.java:241) ~[reactor-core-3.6.4.jar:3.6.4]
	at reactor.core.publisher.MonoFlatMap$FlatMapInner.onError(MonoFlatMap.java:315) ~[reactor-core-3.6.4.jar:3.6.4]
	at reactor.core.publisher.FluxOnAssembly$OnAssemblySubscriber.onError(FluxOnAssembly.java:544) ~[reactor-core-3.6.4.jar:3.6.4]
	at reactor.core.publisher.FluxOnErrorResume$ResumeSubscriber.onError(FluxOnErrorResume.java:106) ~[reactor-core-3.6.4.jar:3.6.4]
	at org.springframework.security.config.annotation.web.configuration.SecurityReactorContextConfiguration$SecurityReactorContextSubscriber.onError(SecurityReactorContextConfiguration.java:191) ~[spring-security-config-6.2.3.jar:6.2.3]
	at reactor.core.publisher.FluxOnAssembly$OnAssemblySubscriber.onError(FluxOnAssembly.java:544) ~[reactor-core-3.6.4.jar:3.6.4]
	at reactor.core.publisher.Operators.error(Operators.java:198) ~[reactor-core-3.6.4.jar:3.6.4]
	at reactor.core.publisher.MonoError.subscribe(MonoError.java:53) ~[reactor-core-3.6.4.jar:3.6.4]
	at reactor.core.publisher.Mono.subscribe(Mono.java:4568) ~[reactor-core-3.6.4.jar:3.6.4]
	at reactor.core.publisher.FluxOnErrorResume$ResumeSubscriber.onError(FluxOnErrorResume.java:103) ~[reactor-core-3.6.4.jar:3.6.4]
	at reactor.netty.transport.TransportConnector$MonoChannelPromise.tryFailure(TransportConnector.java:576) ~[reactor-netty-core-1.1.17.jar:1.1.17]
	at reactor.netty.transport.TransportConnector$MonoChannelPromise.setFailure(TransportConnector.java:522) ~[reactor-netty-core-1.1.17.jar:1.1.17]
	at reactor.netty.transport.TransportConnector.lambda$doConnect$7(TransportConnector.java:261) ~[reactor-netty-core-1.1.17.jar:1.1.17]
	at io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:590) ~[netty-common-4.1.96.Final.jar:4.1.96.Final]
	at io.netty.util.concurrent.DefaultPromise.notifyListenersNow(DefaultPromise.java:557) ~[netty-common-4.1.96.Final.jar:4.1.96.Final]
	at io.netty.util.concurrent.DefaultPromise.notifyListeners(DefaultPromise.java:492) ~[netty-common-4.1.96.Final.jar:4.1.96.Final]
	at io.netty.util.concurrent.DefaultPromise.addListener(DefaultPromise.java:185) ~[netty-common-4.1.96.Final.jar:4.1.96.Final]
	at io.netty.channel.DefaultChannelPromise.addListener(DefaultChannelPromise.java:95) ~[netty-transport-4.1.96.Final.jar:4.1.96.Final]
	at io.netty.channel.DefaultChannelPromise.addListener(DefaultChannelPromise.java:30) ~[netty-transport-4.1.96.Final.jar:4.1.96.Final]
	at reactor.netty.transport.TransportConnector.lambda$doConnect$8(TransportConnector.java:246) ~[reactor-netty-core-1.1.17.jar:1.1.17]
	at io.netty.util.concurrent.AbstractEventExecutor.runTask$$$capture(AbstractEventExecutor.java:174) [netty-common-4.1.96.Final.jar:4.1.96.Final]
	at io.netty.util.concurrent.AbstractEventExecutor.runTask(AbstractEventExecutor.java) [netty-common-4.1.96.Final.jar:4.1.96.Final]
	at io.netty.util.concurrent.AbstractEventExecutor.safeExecute$$$capture(AbstractEventExecutor.java:167) [netty-common-4.1.96.Final.jar:4.1.96.Final]
	at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java) [netty-common-4.1.96.Final.jar:4.1.96.Final]
	at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:470) [netty-common-4.1.96.Final.jar:4.1.96.Final]
	at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:569) [netty-transport-4.1.96.Final.jar:4.1.96.Final]
	at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997) [netty-common-4.1.96.Final.jar:4.1.96.Final]
	at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) [netty-common-4.1.96.Final.jar:4.1.96.Final]
	at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) [netty-common-4.1.96.Final.jar:4.1.96.Final]
	at java.base/java.lang.Thread.run(Thread.java:840) [?:?]

Possible Solution

The managed version for netty-codec-http should be 4.1.107.Final

• Reactor version(s) used: 1.1.17
• Other relevant libraries versions (eg. netty, ...): netty-codec-http: 4.1.96

[violetagg]

@MSchacherbauer

Reactor Netty 1.1.17 (part of Reactor BOM 2023.0.4) has a transitive dependency to Netty 4.1.107.Final
https://github.com/reactor/reactor-netty/releases/tag/v1.1.17

Spring Boot 3.2.4 specifies dependencies to:

• Reactor BOM 2023.0.4 https://github.com/spring-projects/spring-boot/blob/f2988d3f25ce03f823df65b769a582b54f578395/spring-boot-project/spring-boot-dependencies/build.gradle#L1330
• Netty version 4.1.107.Final https://github.com/spring-projects/spring-boot/blob/f2988d3f25ce03f823df65b769a582b54f578395/spring-boot-project/spring-boot-dependencies/build.gradle#L1084

So both projects specified a transitive dependency to Netty 4.1.107.Final

Please check your class path and the library that brings an older version of Netty

[MSchacherbauer]

Thank you for the quick answer. I now see, that something manages the wrong version.

[violetagg]

I'm closing this issue. We can reopen it, if needed.