How can I set HTTP headers to a Portal response to avoid caching at proxy level?

Solution Verified - Updated -

Issue

  • The proxy server fronting JBoss Portal caches content. We would like to avoid caching, and have tried to set the response headers by adding the following to $EPP_HOME/server/$SERVER_CONFIG/deploy/jboss-portal.sar/portal-core.war/WEB-INF/jsp/header/header.jsp, however this does not have an effect, the headers are not added as expected:

     response.setHeader("Cache-Control","no-store");
 response.setHeader("Pragma","no-cache"); 
 response.setDateHeader ("Expires", -1);

Environment

  • JBoss Enterprise Portal Platform (EPP) 4.3

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