Tomcat CORS filter

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The filter org.apache.catalina.filters.CorsFilter seek first a header in the request: Origin. If this header does not exist, the filter does not add any header in the response. Perhaps for that reason does not work.

Additionally, in a POST request, look for the header Content-Type. Something similar happens to other methods. May you want to see the code of this filter. In another way, there is a flowchart:

CORS Flow Chart

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