NPE "io.micronaut.http.filter.FilterContext.response()" because "newFilterContext" is null

[sdelamo]

Expected Behavior

App does not crash

Actual Behaviour

App crashes with:

09:55:59.419 [default-nioEventLoopGroup-1-2] ERROR i.m.http.server.RouteExecutor - Unexpected error occurred: Cannot invoke "io.micronaut.http.filter.FilterContext.response()" because "newFilterContext" is null
java.lang.NullPointerException: Cannot invoke "io.micronaut.http.filter.FilterContext.response()" because "newFilterContext" is null
	at io.micronaut.http.filter.AroundLegacyFilter$FilterChainImpl.lambda$proceed$1(AroundLegacyFilter.java:124)
	at java.base/java.util.concurrent.CompletableFuture$UniApply.tryFire(CompletableFuture.java:646)
	at java.base/java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:510)
	at java.base/java.util.concurrent.CompletableFuture.complete(CompletableFuture.java:2179)
	at io.micronaut.core.execution.ExecutionFlow.lambda$toCompletableFuture$2(ExecutionFlow.java:213)
	at io.micronaut.core.execution.ImperativeExecutionFlowImpl.onComplete(ImperativeExecutionFlowImpl.java:132)
	at io.micronaut.core.execution.DelayedExecutionFlowImpl$OnComplete.apply(DelayedExecutionFlowImpl.java:330)
	at io.micronaut.core.execution.DelayedExecutionFlowImpl.work(DelayedExecutionFlowImpl.java:51)
	at io.micronaut.core.execution.DelayedExecutionFlowImpl.complete0(DelayedExecutionFlowImpl.java:64)
	at io.micronaut.core.execution.DelayedExecutionFlowImpl.complete(DelayedExecutionFlowImpl.java:70)
	at io.micronaut.http.netty.body.StreamingNettyByteBody$SharedBuffer.complete(StreamingNettyByteBody.java:557)
	at io.micronaut.http.server.netty.handler.PipeliningServerHandler$StreamingInboundHandler.read(PipeliningServerHandler.java:542)
	at io.micronaut.http.server.netty.handler.PipeliningServerHandler.channelRead(PipeliningServerHandler.java:218)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:444)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
	at io.netty.channel.CombinedChannelDuplexHandler$DelegatingChannelHandlerContext.fireChannelRead(CombinedChannelDuplexHandler.java:436)
	at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:346)
	at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:318)
	at io.netty.channel.CombinedChannelDuplexHandler.channelRead(CombinedChannelDuplexHandler.java:251)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:442)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
	at io.netty.handler.timeout.IdleStateHandler.channelRead(IdleStateHandler.java:289)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:442)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
	at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1357)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:440)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
	at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:868)
	at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:166)
	at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:788)
	at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:724)
	at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:650)
	at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:562)
	at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997)
	at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
	at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
	at java.base/java.lang.Thread.run(Thread.java:1583)

Steps To Reproduce

Clone https://github.com/Micronaut-TODO/micronauttodo/tree/bug branch bug.

Run the app with ./gradlew run

Attempt to login with bogus credentials. Try several times, it is a flaky error. You will see the above error.

Environment Information

No response

Example Application

https://github.com/Micronaut-TODO/micronauttodo/tree/bug

Version

4.7.0

[yawkat]

I tried many times and also in an infinite loop with curl, wasn't able to reproduce the issue

[sdelamo]

see a video showing the issue @yawkat Were you using the bug branch. Can you reproduce it?

bug.mp4

if signup work, try to login and logout and you may see the error as well.