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https://issues.apache.org/jira/browse/CAMEL-7884?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15268602#comment-15268602
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Claus Ibsen commented on CAMEL-7884:
------------------------------------
Okay so the issue is that when you use async processor then netty will complete
the http server request and deallocate its buffer, which you cannot read from
afterwards when your thread wake up.
So either you need to convert the content to byte[] / string etc to not use
netty's buffer anymore. Or we have to add some logic in
NettyChannelBufferStreamCache to detect hand over the lifecycle of the buffer,
or do a copy of the buffer (a copy will cause 2x memory usage)
> camel-netty4-http does not work for HTTP POST requests on routingSlip
> ---------------------------------------------------------------------
>
> Key: CAMEL-7884
> URL: https://issues.apache.org/jira/browse/CAMEL-7884
> Project: Camel
> Issue Type: Bug
> Components: camel-netty4-http
> Affects Versions: 2.14.0
> Reporter: Yaron A
> Assignee: Claus Ibsen
> Attachments: Reproduce2.zip.001, Reproduce2.zip.002, bug-reproduce.zip
>
>
> I tried to add the camel-netty4-http component to a proper working project
> that uses camel-netty-http.
> HTTP GET requests are working properly but POST requests are not working.
> It might be an issue in Netty but I could not find a solution to get it to
> work.
> Here is the exception I see:
> 2014-10-01 09:12:18,012 DEBUG [042ase_1412143933559.data]
> [n.s.ehcache.store.disk.Segment] fault removed 0 from heap
> 2014-10-01 09:12:18,012 DEBUG [042ase_1412143933559.data]
> [n.s.ehcache.store.disk.Segment] fault added 0 on disk
> 2014-10-01 09:12:18,012 TRACE [pool-1-thread-1 ]
> [o.a.c.i.c.DefaultTypeConverter] Converting
> io.netty.util.IllegalReferenceCountException -> java.lang.Throwable with
> value: {}
> io.netty.util.IllegalReferenceCountException: refCnt: 0
> at
> io.netty.buffer.AbstractByteBuf.ensureAccessible(AbstractByteBuf.java:1187)
> ~[netty-buffer-4.0.23.Final.jar:4.0.23.Final]
> at
> io.netty.buffer.AbstractByteBuf.checkReadableBytes(AbstractByteBuf.java:1170)
> ~[netty-buffer-4.0.23.Final.jar:4.0.23.Final]
> at io.netty.buffer.AbstractByteBuf.readBytes(AbstractByteBuf.java:676)
> ~[netty-buffer-4.0.23.Final.jar:4.0.23.Final]
> at
> io.netty.buffer.CompositeByteBuf.readBytes(CompositeByteBuf.java:1461)
> ~[netty-buffer-4.0.23.Final.jar:4.0.23.Final]
> at io.netty.buffer.CompositeByteBuf.readBytes(CompositeByteBuf.java:40)
> ~[netty-buffer-4.0.23.Final.jar:4.0.23.Final]
> at
> org.apache.camel.component.netty4.http.NettyChannelBufferStreamCache.read(NettyChannelBufferStreamCache.java:69)
> ~[camel-netty4-http-2.14.0.jar:2.14.0]
> at sun.nio.cs.StreamDecoder.readBytes(StreamDecoder.java:284)
> ~[na:1.8.0]
> at sun.nio.cs.StreamDecoder.implRead(StreamDecoder.java:326) ~[na:1.8.0]
> at sun.nio.cs.StreamDecoder.read(StreamDecoder.java:178) ~[na:1.8.0]
> at java.io.InputStreamReader.read(InputStreamReader.java:184)
> ~[na:1.8.0]
> at java.io.BufferedReader.fill(BufferedReader.java:161) ~[na:1.8.0]
> at java.io.BufferedReader.read1(BufferedReader.java:212) ~[na:1.8.0]
> at java.io.BufferedReader.read(BufferedReader.java:286) ~[na:1.8.0]
> at java.io.Reader.read(Reader.java:140) ~[na:1.8.0]
> at
> org.apache.camel.converter.IOConverter.toString(IOConverter.java:304)
> ~[camel-core-2.14.0.jar:2.14.0]
> at
> org.apache.camel.converter.IOConverter.toString(IOConverter.java:290)
> ~[camel-core-2.14.0.jar:2.14.0]
> at
> org.apache.camel.converter.IOConverter.toString(IOConverter.java:351)
> ~[camel-core-2.14.0.jar:2.14.0]
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> ~[na:1.8.0]
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> ~[na:1.8.0]
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> ~[na:1.8.0]
> at java.lang.reflect.Method.invoke(Method.java:483) ~[na:1.8.0]
> at
> org.apache.camel.util.ObjectHelper.invokeMethod(ObjectHelper.java:1002)
> ~[camel-core-2.14.0.jar:2.14.0]
> at
> org.apache.camel.impl.converter.StaticMethodTypeConverter.convertTo(StaticMethodTypeConverter.java:59)
> ~[camel-core-2.14.0.jar:2.14.0]
> at
> org.apache.camel.impl.converter.BaseTypeConverterRegistry.doConvertTo(BaseTypeConverterRegistry.java:276)
> ~[camel-core-2.14.0.jar:2.14.0]
> at
> org.apache.camel.impl.converter.BaseTypeConverterRegistry.mandatoryConvertTo(BaseTypeConverterRegistry.java:165)
> ~[camel-core-2.14.0.jar:2.14.0]
> at
> org.apache.camel.impl.MessageSupport.getMandatoryBody(MessageSupport.java:99)
> ~[camel-core-2.14.0.jar:2.14.0]
> at
> org.apache.camel.builder.ExpressionBuilder$41.evaluate(ExpressionBuilder.java:1011)
> ~[camel-core-2.14.0.jar:2.14.0]
> at
> org.apache.camel.support.ExpressionAdapter.evaluate(ExpressionAdapter.java:36)
> ~[camel-core-2.14.0.jar:2.14.0]
> at
> org.apache.camel.component.bean.MethodInfo$2.evaluateParameterBinding(MethodInfo.java:595)
> ~[camel-core-2.14.0.jar:2.14.0]
> at
> org.apache.camel.component.bean.MethodInfo$2.evaluate(MethodInfo.java:485)
> ~[camel-core-2.14.0.jar:2.14.0]
> at
> org.apache.camel.component.bean.MethodInfo.createMethodInvocation(MethodInfo.java:240)
> ~[camel-core-2.14.0.jar:2.14.0]
> at
> org.apache.camel.component.bean.BeanInfo.createInvocation(BeanInfo.java:280)
> ~[camel-core-2.14.0.jar:2.14.0]
> at
> org.apache.camel.component.bean.BeanInfo.createInvocation(BeanInfo.java:180)
> ~[camel-core-2.14.0.jar:2.14.0]
> at
> org.apache.camel.component.bean.BeanProcessor.process(BeanProcessor.java:149)
> ~[camel-core-2.14.0.jar:2.14.0]
> at
> org.apache.camel.processor.RedeliveryErrorHandler.process(RedeliveryErrorHandler.java:398)
> ~[camel-core-2.14.0.jar:2.14.0]
> at
> org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:191)
> [camel-core-2.14.0.jar:2.14.0]
> at org.apache.camel.processor.Pipeline.process(Pipeline.java:118)
> [camel-core-2.14.0.jar:2.14.0]
> at org.apache.camel.processor.Pipeline.access$100(Pipeline.java:43)
> [camel-core-2.14.0.jar:2.14.0]
> at org.apache.camel.processor.Pipeline$1.done(Pipeline.java:136)
> [camel-core-2.14.0.jar:2.14.0]
> at
> org.apache.camel.processor.CamelInternalProcessor$InternalCallback.done(CamelInternalProcessor.java:251)
> [camel-core-2.14.0.jar:2.14.0]
> at
> org.apache.camel.processor.RedeliveryErrorHandler$1.done(RedeliveryErrorHandler.java:410)
> [camel-core-2.14.0.jar:2.14.0]
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