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https://issues.apache.org/jira/browse/CAMEL-7894?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Willem Jiang resolved CAMEL-7894.
---------------------------------
Resolution: Fixed
Fix Version/s: 2.15.0
2.14.1
Applied the patch into camel master, camel-2.14.x branches.
> Encoder exception after sending a message with null body
> --------------------------------------------------------
>
> Key: CAMEL-7894
> URL: https://issues.apache.org/jira/browse/CAMEL-7894
> Project: Camel
> Issue Type: Bug
> Components: camel-netty4-http
> Affects Versions: 2.14.0
> Reporter: Elyran Kogan
> Assignee: Willem Jiang
> Fix For: 2.14.1, 2.15.0
>
>
> when sending a request with a null body ( it was GET request in my case)
> I got the following exception.
> after investigating the issue I found that because the body is null - the
> request is created with type DefaultHttpRequest and not
> DefaultFullHttpRequest which is created when there is a body
> this causes the HttpObjectEncoder to stay in a wrong state after the request
> is sent, because of this code:
> if (msg instanceof LastHttpContent) {
> state = ST_INIT;
> }
> so the next request will fail with the exception.
> the workaround is simple - use an empty string as body
> also - this did not happen in camel-netty-http
> the exception:
> Caused by: io.netty.handler.codec.EncoderException:
> java.lang.IllegalStateException: unexpected message type:
> DefaultFullHttpRequest at
> io.netty.handler.codec.MessageToMessageEncoder.write(MessageToMessageEncoder.java:107)
> at
> io.netty.channel.CombinedChannelDuplexHandler.write(CombinedChannelDuplexHandler.java:192)
> at
> io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:658)
> at
> io.netty.channel.AbstractChannelHandlerContext.access$2000(AbstractChannelHandlerContext.java:32)
> at
> io.netty.channel.AbstractChannelHandlerContext$AbstractWriteTask.write(AbstractChannelHandlerContext.java:939)
> at
> io.netty.channel.AbstractChannelHandlerContext$WriteAndFlushTask.write(AbstractChannelHandlerContext.java:991)
> at
> io.netty.channel.AbstractChannelHandlerContext$AbstractWriteTask.run(AbstractChannelHandlerContext.java:924)
> at
> io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:380)
> at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:357) at
> io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:116)
> at java.lang.Thread.run(Thread.java:745) Caused by:
> java.lang.IllegalStateException: unexpected message type:
> DefaultFullHttpRequest at
> io.netty.handler.codec.http.HttpObjectEncoder.encode(HttpObjectEncoder.java:63)
> at
> io.netty.handler.codec.http.HttpClientCodec$Encoder.encode(HttpClientCodec.java:106)
> at
> io.netty.handler.codec.MessageToMessageEncoder.write(MessageToMessageEncoder.java:89)
> ... 10 more
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