FS#852 Search function does not work under IIS 6.0 + php-cgi.exe

Backend

• 

  2006-06-27 jmvally

  The function call "@ignore_user_abort(true);" does not seem to work correctly under IIS 6.0 (Windows 2003 SP1) + PHP 5.0.5 using the php-cgi.exe handler. The routine that reindexes a page after a change does not seem to complete, causing the indexes to be always empty and preventing the search function to find anything. Moving the call to "sendGif" after the call to "runIndexer" seems to fix the problem. I understand that this is not optimal (downloading the gif completes only when the indexing is done), but as it is, the search function does not work (indexes are never created or upadted).
  
  Following is a snippet of the change I performed on the file lib/exe/indexer.php (move call to "sendGif" after call to "runIndexer"
  
  <?php
  /**
  * DokuWiki indexer
  *
  * @license    GPL 2 (http://www.gnu.org/licenses/gpl.html)
  * @author     Andreas Gohr <andi@splitbrain.org>
  */
  if(!defined('DOKU_INC')) define('DOKU_INC',realpath(dirname(__FILE__).'/../../').'/');
  require_once(DOKU_INC.'inc/init.php');
  require_once(DOKU_INC.'inc/auth.php');
  session_write_close();  //close session
  if(!defined('NL')) define('NL',"n");
  
  // keep running after browser closes connection
  @ignore_user_abort(true);
  
  // send gif
  // ### IIS6 Note: calling sendGif does trigger re-indexing the page
  // ### under IIS 6 + php-cgi.exe. Calling sendGif after the indexing
  // ### is done works
  // sendGIF();
  
  // Catch any possible output (e.g. errors)
  if(!$_REQUEST['debug']) ob_start();
  
  // run one of the jobs
  runIndexer() or runSitemapper();
  
  if(!$_REQUEST['debug']) ob_end_clean();
  
  // ### IIS6: Send the image after runIndexer is executed
  sendGIF();
  exit;
  
• 

  2006-07-01 andi

  I just pushed a patch which checks if ignore_user_abort was successful and will defer the GIF output if not. I'm not sure if this will work with your config so it would be great if you could check either the current devel release or just replace your indexer.php with the one at http://dev.splitbrain.org/view/darcs/dokuwiki/lib/exe/indexer.php
• 

  2006-09-05 grin

  I've got the same problem and came to the same conclusion Jean-Max. By manually debugging and going through the code and browsing the darcs repository I found the update for indexer.php. I have just tested this using my setup (PHP 5.1.1 on IIS 6 on Win2003server using the php-cgi.exe handler).
  
  The result was that it didn't help.
  
  I then created a small script to test the behaviour of ignore_user_abort() on my platform:
  
  <?
  if(@ignore_user_abort()){
     $defer = "ignore";
  }else{
     $defer = "don't ignore";
  }
  
  echo $defer."<br>";
  
  @ignore_user_abort(true);
  
  if(@ignore_user_abort()){
     $defer = "ignore";
  }else{
     $defer = "don't ignore";
  }
  
  echo $defer;
  ?>
  
  The output of this script is:
  don't ignore
  ignore
  
  So apparently ignore_user_abort gets set...
  
  Unfortunately I'm not experienced enough on Windows (using it because of company policy, not my own preference) to suggest a fix other than the one posted by Jean-Max, that one works for now.
• 

  2007-02-08 andi

  I just pushed a patch which allows to set a config option, to work around the problem on broken platforms.