Description:
A pre-flight OPTIONS call is rejected by the CORS filter with a "HTTP 403 Forbidden" response.

To resolve this issue, make a note of all the headers being passed in the OPTIONS call and add them to the CORS filter's "allowed.headers" property.

Example:
------------
A request with the following headers is rejected:
.........
Request Headersview source

    Accept:
    */*
    Accept-Encoding:
    gzip, deflate, sdch
    Accept-Language:
    en-US,en;q=0.8,cs;q=0.6,hi;q=0.4
    Access-Control-Request-Headers:
    accept, apikey, content-type, publickey, userid
    Access-Control-Request-Method:
    GET
    Connection:
    keep-alive
    Host:
    dev-api.company.com
    Origin:
    http://enable-cors.org
    Referer:
    http://enable-cors.org/
    User-Agent:
    Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/43.0.2357.134 Safari/537.36
.........

To resolve, add these values (publickey and userid, as they are being passed in the pre-flight OPTIONS request) to the allowed headers.

Example:

 <property name="be.http.filter.cors.param.cors.allowed.headers" value="publickey, userid, Origin, Accept, apikey, X-Requested-With, Content-Type, Access-Control-Request-Method, Access-Control-Request-Headers"/>
------------

How to resolve the issue where an OPTIONS call is rejected with HTTP 403?

Information about CORS is available in the documentation at:
Home >> User's Guide >> Appendix A >> Configuration Tasks >> Enabling Cross-Origin Resource Sharing(CORS) Filter Properties