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  1. XWiki Platform
  2. XWIKI-6830

Downloads and Exports not working with Internet Explorer when server in HTTPS with Kerberos

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Details

    • Bug
    • Resolution: Won't Fix
    • Major
    • None
    • 3.0.1
    • Old Core
    • Unknown

    Description

      The Export and Attachment download fail on Internet Explorer (tested with IE8), with a combination of HTTPS and Kerberos on XE 3.0.
      I was not able to reproduce the issue with HTTPS only with XE 3.1 (I see that there are no cache-control headers with 3.1)

      The issue is related to: http://support.microsoft.com/kb/323308/en-us
      Indeed changing the registry value BypassSSLNoCacheCheck to 1 also fixes the issue.

      To workaround the issue, a modification to DownloadAction and ExportAction to force specific Cache-Control and Pragma headers will work:

      response.setHeader("Cache-Control", "public, must-revalidate");
      response.setHeader("Pragma", "hack");
      

      It is important to "set" the header and not "add" them. If the Cache-Control "no-cache" header is still there it will fail.

      On HTTPS only without Kerberos it was possible to witness a similar issue with the following script:

      {{velocity}}
      #if($request.confirm)
      #set($ok = $response.setContentType("application/rtf"))
      #set($ok = $response.setHeader("Content-Disposition", "attachment; filename='Main.WebHome.rtf'"))
      #set($ok = $response.setHeader("Pragma", "no-cache"))
      #set($ok = $response.setHeader("Cache-Control", "no-cache"))
      #set($ok = $response.setHeader("Content-Language", "fr"))
      #set($ok = $response.setHeader("Expires", "Thu, 01 Jan 1970 01:00:00 CET"))
      ##set($ok = $response.setHeader("Cache-Control", "public, must-revalidate"))
      ##set($ok = $response.setHeader("Pragma", "hack"))
      
      Hello, this is a download test.
      #else
      [[Confirm>>?confirm=1]]
      #end
      {{/velocity}}
      

      Activating the 2 setHeader lines will make the download work.

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            tmortagne Thomas Mortagne
            ludovic Ludovic Dubost
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              Created:
              Updated:
              Resolved: