[jira] [Created] (CAMEL-9101) RabbitMQ specific message properties are forwarded as message headers

["Serge Smertin (JIRA)" <ji...@apache.org>]

Serge Smertin created CAMEL-9101:
------------------------------------

             Summary: RabbitMQ specific message properties are forwarded as message headers
                 Key: CAMEL-9101
                 URL: https://issues.apache.org/jira/browse/CAMEL-9101
             Project: Camel
          Issue Type: Bug
          Components: camel-rabbitmq
    Affects Versions: 2.15.2
            Reporter: Serge Smertin


org.apache.camel.component.rabbitmq.RabbitMQProducer#buildProperties does not remove message headers from exchange after property is set, leading to message header pollution.

so constructs like 

````
final Object contentType = exchange.getIn().getHeader(RabbitMQConstants.CONTENT_TYPE);
        if (contentType != null) {
            properties.contentType(contentType.toString());
        }
````

must be rewritten as

````
final Object contentType = exchange.getIn().removeHeader(RabbitMQConstants.CONTENT_TYPE);
        if (contentType != null) {
            properties.contentType(contentType.toString());
        }
````

I don't think that these are used in business logic as this is solely transport specific.



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