[richfaces-issues] [JBoss JIRA] Created: (RF-7452) org.ajax4jsf.DEFAULT_EXPIRE needs to override 'Pragma' header

[Richard Kennard (JIRA)]

org.ajax4jsf.DEFAULT_EXPIRE needs to override 'Pragma' header
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                 Key: RF-7452
                 URL: https://jira.jboss.org/jira/browse/RF-7452
             Project: RichFaces
          Issue Type: Bug
          Components: browser compatibility
    Affects Versions: 3.3.1
            Reporter: Richard Kennard


The flag org.ajax4jsf.DEFAULT_EXPIRE, which defaults to 86400, is meant to set client-side expiry for static resources (see RF-2506 and RF-4212). This is a great idea but it is incorrectly implemented.

The problem is browsers differ on what they consider as the 'expires header'. For correct operation, a combination of 'Pragma', 'Cache-Control' and 'Expires' is needed. At the moment the code is setting 'Pragma: No-cache', which means expiry does not work on Firefox. If you use Firebug, you can see all the resources are reloaded every page.

This is what RichFaces currently sets as its headers, by default:

Pragma: No-cache
Cache-Control: max-age=86400
Expires: Fri, 26 Jun 2009 22:32:50 GMT

This is what it should set:

Pragma:
Cache-Control: max-age=86400
Expires: Fri, 26 Jun 2009 22:32:50 GMT


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