[CAMEL-14098] netty throws exception if post does not have an empty body

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.24.2, 3.0.0.RC2
• Fix Version/s: 2.24.3, 3.0.0, 2.25.0
• Component/s: camel-netty-http, camel-netty4-http

Environment

Java 1.8 running on a Mac

• Estimated Complexity: Unknown
• Assignee: Zheng Feng
• Reporter: Mark Grand
• Created: 22/Oct/19 17:33
• Updated: 21/Nov/19 19:53
• Resolved: 28/Oct/19 09:25

Description

I have a very simple route:

class UiaRouteConfig extends RouteBuilder {
    @Override
    public void configure() {
        from("netty-http:http://0.0.0.0:8080/authorization")
                .to("mock:foo");
    }
}

If I send a post with no data like this, it works as expected:

curl -v -X POST http://localhost:8080/authorization

However, if I send even one byte of data like this

curl -v -X POST http://localhost:8080/authorization -d x

netty throws this exception:

13:10:14.370 [Camel (camel-1) thread #5 - NettyEventExecutorGroup] DEBUG o.a.c.c.netty.http.NettyHttpConsumer - Closing channel as an exception was thrown from Netty13:10:14.370 [Camel (camel-1) thread #5 - NettyEventExecutorGroup] DEBUG o.a.c.c.netty.http.NettyHttpConsumer - Closing channel as an exception was thrown from Nettyio.netty.util.IllegalReferenceCountException: refCnt: 0, decrement: 1 at io.netty.util.internal.ReferenceCountUpdater.toLiveRealRefCnt(ReferenceCountUpdater.java:74) at io.netty.util.internal.ReferenceCountUpdater.release(ReferenceCountUpdater.java:138) at io.netty.buffer.AbstractReferenceCountedByteBuf.release(AbstractReferenceCountedByteBuf.java:100) at io.netty.handler.codec.http.HttpObjectAggregator$AggregatedFullHttpMessage.release(HttpObjectAggregator.java:379) at io.netty.util.ReferenceCountUtil.release(ReferenceCountUtil.java:88) at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:112) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:374) at io.netty.channel.AbstractChannelHandlerContext.access$600(AbstractChannelHandlerContext.java:56) at io.netty.channel.AbstractChannelHandlerContext$7.run(AbstractChannelHandlerContext.java:365) at io.netty.util.concurrent.DefaultEventExecutor.run(DefaultEventExecutor.java:66) at io.netty.util.concurrent.SingleThreadEventExecutor$6.run(SingleThreadEventExecutor.java:1044) at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) at java.base/java.lang.Thread.run(Thread.java:834)

If it helps, I have uploaded the two classes in this example, along with a maven pom file to build an executable .jar.

Issue Links

• links to: GitHub Pull Request #3280
• links to: GitHub Pull Request #3286
• links to: GitHub Pull Request #3287