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https://issues.apache.org/jira/browse/CAMEL-10985?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15981454#comment-15981454
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James Netherton commented on CAMEL-10985:
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I'm no expert on CoAP, but, does CORS even make sense in this context? See
method codes listed in this document (OPTIONS is not mentioned):
https://github.com/markushx/coap-cheatsheet/blob/master/coap-cheatsheet.pdf
The reason things are not working, is because when CORS is enabled, camel is
[automatically
adding|https://github.com/apache/camel/blob/master/components/camel-coap/src/main/java/org/apache/camel/coap/CoAPComponent.java#L119-L121]
{{OPTIONS}} to the list of allowed method verbs configured on the endpoint.
This screws up the logic to retrieve the correct consumer to handle the
request, since it's expecting to match against individual verb names like
{{GET}} or {{POST}} etc. Not {{GET,OPTIONS}} or {{POST,OPTIONS}} etc.
> camel-coap fails to return results when enableCORS(true) is set
> ---------------------------------------------------------------
>
> Key: CAMEL-10985
> URL: https://issues.apache.org/jira/browse/CAMEL-10985
> Project: Camel
> Issue Type: Bug
> Components: camel-coap
> Affects Versions: 2.19.0
> Reporter: Scott Cranton
> Priority: Minor
>
> In the CoAPRestVerbTest, if you add to the restConfiguration()
> .enableCORS(true), then all of the unit tests that return a result fail as no
> response is returned
> https://github.com/apache/camel/blob/master/components/camel-coap/src/test/java/org/apache/camel/coap/CoAPRestVerbTest.java#L106
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