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https://issues.apache.org/jira/browse/CAMEL-8370?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14325486#comment-14325486
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Claus Ibsen commented on CAMEL-8370:
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If you want to help with doc then see here
http://camel.apache.org/how-do-i-edit-the-website.html

> CamelHttpResponseCode missing from documentation
> ------------------------------------------------
>
>                 Key: CAMEL-8370
>                 URL: https://issues.apache.org/jira/browse/CAMEL-8370
>             Project: Camel
>          Issue Type: Task
>          Components: documentation
>    Affects Versions: 2.14.1
>            Reporter: Mark Mindenhall
>            Priority: Minor
>
> I sent the following to the [email protected] list earlier today:
> {quote}
> I’m using the camel-netty4-http (latest 2.14.2-SNAPSHOT) component to create 
> an endpoint that receives an HTTP POST from a device, translates the message 
> from binary to JSON, then sends it along to a kafka topic for further 
> processing.  When there are errors in validating or translating the incoming 
> message, I need to be able to return a HTTP response code and response body.
> The camel-netty4-http documentation has an “Access to Netty types” section, 
> which says that I should be able to do the following to access the instance 
> of io.netty.handler.codec.http.HttpResponse:
>     HttpResponse response = 
> exchange.getIn(NettyHttpMessage.class).getHttpResponse();
> Regardless of where I access the exchange within the route, getHttpResponse() 
> is always returning null.  On the "happy path” I can return 200 by calling 
> exchange.getOut().setBody(myResponse), but I have been unable to figure out 
> how to return another response code.
> Is this a bug?  Or is there another way to accomplish what I’m trying to do?
> {quote}
> After digging around in the code, it looks like the HTTP status code is set 
> via the CamelHttpResponseCode message header 
> (org.apache.camel.component.netty4.http.DefaultNettyHttpBinding, line 308).  
> However, there is no mention of this message header in either the 
> camel-netty-http or camel-netty4-http documentation.  It would be helpful to 
> add this header to the list of applicable message headers, and also to 
> include an example that demonstrates how to set the response status code and 
> body:
> Finally, the existing "Access to Netty types" example should be modified to 
> be clear that only the request can be accessed in this way.
> {code}
> // specify response body and status
> exchange.getOut().setBody(myResponseBody);               
> exchange.getOut().setHeader(Exchange.HTTP_RESPONSE_CODE, 401);
> {code}



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