ZF-7450: Action helper contextswitch - Headers of context xml can not be modified

Description

Though context xml is removed and then added with new headers, the headers are not acknowledged.

Works fine for the other default context json and all new context switches though:

 
$contextSwitch->removeContext('xml');
$contextSwitch->removeContext('json');

        $context = 'xml';
        $spec = array(
            'headers'       => array(
                'Content-type' => 'text/xml',
                'Expires' => 'Mon, 26 Jul 1997 05:00:00 GMT',
                'Last-Modified' => gmdate( 'D, d M Y H:i:s' ) . ' GMT',
                'Cache-Control' => 'no-cache, must-revalidate',              
                'Pragma' => 'no-cache'   
            ),
            'callbacks'     => array(
                'post'          => array($this,'showXml')
            )
        );
        $contextSwitch->addContext($context, $spec);

        $context = 'json';
        $spec = array(
            'headers'       => array(
                'Content-type' => 'text/json',
                'Expires' => 'Mon, 26 Jul 1997 05:00:00 GMT',
                'Last-Modified' => gmdate( 'D, d M Y H:i:s' ) . ' GMT',
                'Cache-Control' => 'no-cache, must-revalidate',              
                'Pragma' => 'no-cache'                 
            ),
            'callbacks'     => array(
                'post'          => array($this,'showJson')
            )
        );
        
        $contextSwitch->addContext($context, $spec);
wrong for xml:
curl -I "http://url/format/xml"
HTTP/1.1 200 OK
Date: Mon, 03 Aug 2009 09:17:30 GMT
Server: Apache
Vary: Accept-Encoding
Content-Type: text/xml

correct for json:
curl -I "http://url/format/json"
HTTP/1.1 200 OK
Date: Mon, 03 Aug 2009 09:17:28 GMT
Server: Apache
Expires: Mon, 26 Jul 1997 05:00:00 GMT
Last-Modified: Mon, 03 Aug 2009 09:17:28 GMT
Cache-Control: no-cache, must-revalidate
Pragma: no-cache
Vary: Accept-Encoding
Content-Type: text/json

Comments

Bulk change of all issues last updated before 1st January 2010 as "Won't Fix".

Feel free to re-open and provide a patch if you want to fix this issue.