Hello,
I've a problem with my application when an ajax call on
the server takes too much time : it queue all
the others queries from
the user until it's done server
side (I realized that canceling
the call
client side has no effect and
the user still have to wait).
Here is my test case :
<script type="text/javascript" src="jquery-1.4.1.min.js"></script>
<a href="another-page.php">Go to another page on
the same server</a>
<script type="text/javascript">
url = 'http://localserver/some-very-long-complex-query';
$.get(url);
</script>
So when
the get is fired and then after I click on
the link,
the server finish serving
the first call before bringing me to
the other page. My problem is that I want to avoid this behavior.
I'm on a LAMP server and I'm looking in a way to inform
the server that
the user aborted
the query with function like connection_aborted(), do you think that's
the way to go ? Also, I know that
the longest part of this PHP script is a MySQL query, so even if I know that connection_aborted() can detect that
the user cancel
the call, I still need to check this during
the MySQL query... I'm not really sure that PHP can handle this kind of "event".
So if you have
any better idea, I can't wait to hear it.
Thank you.
Update :
After further investigation, I found that
the problem happen only with
the Symfony framework (that I omitted to precise, my bad). It seems that an Ajax call lock
any other future call. It maybe related to
the controller or
the routing system, I'm looking into it.
Also for those interested by
the problem here is my new test case :
-new project with Symfony 1.4.3, default configuration, I just created an app and a default module.
-jquery 1.4 for
the ajax query.
Here is my actions.class.php (in my unique module) :
class defaultActions extends sfActions
{
public function executeIndex(sfWebRequest $request)
{
//Do nothing
}
public function executeNewpage()
{
//Do also nothing
}
public function executeWaitingaction(){
// Wait
sleep(30);
return false;
}
}
Here is my indexSuccess.php template file :
<script type="text/javascript" src="jquery-1.4.1.min.js"></script>
<a href="<?php echo url_for('default/newpage');?>">Go to another symfony action</a>
<script type="text/javascript">
url = '<?php echo url_for('default/waitingaction');?>';
$.get(url);
</script>
For
the new page template, it's not very relevant... But with this, I'm able to reproduce
the lock problem I've on my real application.
Is somebody else having
the same issue ?
Thanks.
