FS#94 Session control disables browser caching

CSS, XHTML, JS, Browsers

• 

  2005-01-27 jbe

  This is a request for comment regarding the disabled browser caching rather than a bugreport.
  
  Default PHP session handling sends a bunch of headers preventing the browser from caching pages. This is extremely inconvenient when reading a long article, following a link and forced to wait for a full reload when returning back (which moreover leads to the very top of the previous page).
  
  This forces me to ask: is the non-caching behavior of PHP sessions necessary?
  
  I enabled browser caching using the following simple modification in inc/common.php:
  //init session
  session_name("DokuWiki");
  session_cache_limiter('private_no_expire');
  session_start();
  
  It works fine for me.
  
   Honza
• 

  2005-05-23 andi

  Tried the suggested option but it causes problems in Firefox. After saving the page is not updated correctly. The better way would be to send correct last-modified and etag headers and handle corresponding request header correctly.
• 

  2005-05-25 rm

  This can be fixed by adding an unique "nocache" parameter to each after-edit redirect. (Of course you can remove the bit about IDNs for now, and/or consider it separately)
  
  diff -Pur -x .cache -x _cache -x rm -x .htaccess -x images -x includes -x interwiki -x lang -x media -x conf dokuwiki-2005-05-07\\inc\\actions.php roshia\\wiki\\inc\\actions.php
  --- dokuwiki-2005-05-07\\inc\\actions.php Sat May 07 15:22:56 2005
  +++ roshia\\wiki\\inc\\actions.php Thu May 19 02:53:53 2005
  @@ -166,7 +166,11 @@
       
    //show it
    session_write_close();
  -  header("Location: ".wl($ID,'',true));
  +  // Add an unique parameter so that browser does not show
  +  // a cached (unedited) version of the page.
  +  // Also, change absolute redirect URL to relative, to make it
  +  // work correctly with Firefox and International Domain Names.
  +  header("Location: ".wl($ID,'',false).'?nocache='.time());
    exit();
  }
   
• 

  2005-05-30 rupert0

  Dont know how smart is my solution but seems to work ....
  
  i just moved the line for the session_register to beginning of the file........
• 

  2006-10-16 gb

  This is the oldest issue we have :-) Does anyone know if anything here still applies to the current versions of DW?
• 

  2006-10-20 gb

  Stale issue