File upload for Page Attachment giving error

I'm getting the same error using FireFox on Drupal 6.1. The file is uploaded. Thought it might have something to do with spaces in the filename, but it does not. I'm using a private file system. I'm using Windows Vista. I checked, and the upload does work using IE 7 (7.0.6).

I get the same error with Safari on a mac.

I uploaded the same file from another page. After that I was able to upload it on the original page.

(I'm not sure if the solution was the extra upload, or if the problem self-solved by some kind of timeout.)

Drupal 6.x, Win XP Pro SP2, FF & IE 7

I get the same error on ALL my pages.

I get the error and the file DOES NOT upload at all.

The file progress bar looks like it's doing something but it's not doing anything.

I have been just dropping img src tag directly into the body to add my images.

Same error. However, it seems to eventually work if I keep pressing the attach button after every failure.

I have tried this twice so far, and both times it has worked on the third try.

Oh good lord, I'm not the only one this is happening to! I thought I was going crazy.

This is a major, major issue. When I was using Drupal 6.0 I had no issues, but I upgraded to 6.1, and the issues have been happening since.

I've made sure my php.ini allows for file uploads that large, and each of my user types is able to upload files that are larger than what I'm trying to upload.

I has this error only in Opera, and not always, but sometimes.

Solution in last version of plugin jquery.form.js.
Try to download last version from
http://jqueryjs.googlecode.com/svn/trunk/plugins/form/jquery.form.js
and replace misc/jquery.form.js by it.

Reasons of this bug described by plugin authors, in jquery.form.js at rows 228-229:

// In Opera 9.2.x the iframe DOM is not always traversable when
// the onload callback fires so we give Opera 100ms to right itself

Same problem here too when using FF (2.0.0.14) with Drupal running on Linux. Works fine in IE7, and works fine with both FF and IE7 when running Drupal locally on my Windows machine.

Have replaced jquery.form.js as per GreenMother's suggestion but no joy.

Not sure where to start looking.

Anyone found a solution to this yet?

Farez

This error can occurs when php generate php-error or php-warning on ajax-page and this error displayed in browser (display_errors = On in php.ini). Results will be is not correct JSON in this case. Look apache logs after Error 0 occurs, path to solution can be there.

I know what causes this error with respect to the Drupal interface
(as opposed to knowing what the bug is in a script somewhere):

In Administer > Site configuration > File uploads

If you leave 'Maximum resolution for uploaded images' set to zero, the http 0 error occurs on affected systems.
If you edit that setting to contain a value such as 400x400, there is no error.

NOTE:
My problem occurred on win2000 with the latest Opera, FF, and IE6.
Replacing the suggested js file (above) did not help the problem on Opera or FF, but *did* fix IE6.

I'll leave someone else with more knowledge than me to decide whether this should be a bug report or not.

Cheers.

I had the exact same problem with my install, and found that the file was uploading correctly, and that the file was appearing in the files folder as expected, but the session didn't seem to know about it.

I had configured my drupal install to use InnoDB tables so that I only had row locks instead of table locks when updating user sessions (for speed). Since this means that we can have a race condition between the page reload on the user side and the database update for their session, I tried an experiment...

I discovered that when I wrapped the session save handler with a transaction, the problem went away (along with a strange login failure bug I thought was unrelated).

Index: /drupal/trunk/includes/session.inc
===================================================================
--- /drupal/trunk/includes/session.inc (revision 6)
+++ /drupal/trunk/includes/session.inc (revision 16)
@@ -71,8 +71,11 @@
     // table rows without breaking throttle module and "Who's Online" block.
     if ($user->uid || $value || count($_COOKIE)) {
+      db_query('start transaction');
       db_query("INSERT INTO {sessions} (sid, uid, cache, hostname, session, timestamp) VALUES ('%s', %d, %d, '%s', '%s', %d)", $key, $user->uid, isset($user->cache) ? $user->cache : '', ip_address(), $value, time());
+      db_query('commit');
     }
   }
   else {
+    db_query('start transaction');
     db_query("UPDATE {sessions} SET uid = %d, cache = %d, hostname = '%s', session = '%s', timestamp = %d WHERE sid = '%s'", $user->uid, isset($user->cache) ? $user->cache : '', ip_address(), $value, time(), $key);
 
@@ -82,4 +85,5 @@
       db_query("UPDATE {users} SET access = %d WHERE uid = %d", time(), $user->uid);
     }
+    db_query('commit;');
   }
 
@@ -103,6 +107,8 @@
 
   session_regenerate_id();
+  db_query('start transaction;');
 
   db_query("UPDATE {sessions} SET sid = '%s' WHERE sid = '%s'", session_id(), $old_session_id);
+  db_query('commit;');
 }

Obviously, the InnoDB is not a "normal" configuration of Drupal, but it really makes a difference for the speed of the user session data. I have not benchmarked since to see if this change destroys any speed advantage.

Try turning off 'Optimize JS / CSS files' in Performance.. see if that helps.

Also, after replacing new jquery.form.js, remember to clear your cache. It works in my case.

I also have this problem. It ushaly happens when i try to upload larger files. I set the php.ini to allow uploads to 100mb. but i still get the problem. I tried it in Firefox 2 and 3, Safari and IE 7. All of them same problem. Is there anyway to fix this?

I also got this error in every browser.
I clicked Save button, BUT I FORGET to click ATTACH button before, and it works!

Just got this error and I think it was a caching problem -- the admin/settings/uploads page wasn't available either.

Is this not to do with edit permissions on certain users?

I'm running D6.10, FF 3.06, OSX.5
I recently installed jqBrowser, which broke file attachments for me.

Upgrading to the latest version of jquery.form.js (v2.21) resolved this issue for me....
Haven't seen any additional errors due to this upgrade yet.

hth,
/a

Hi,
I tried replacing the jquery.form.js in the /misc folder but the file attachment error was still occuring. Then i figured out the jquery.form.js was being used by other modules i have installed. For example advpoll module. By replacing these modules folders' jquery.form.js file that fixed the problem.
The new jquery.form.js file is available here:
http://jqueryjs.googlecode.com/svn/trunk/plugins/form/jquery.form.js

None of the jquery solutions worked for me. I noticed a similar problem trying to upload files through fckeditor, but this gave far more useful errors and I was able to figure out that I needed to enable Write access to the /tmp and /sites/default/files foders. All seems to work fine now.

this is driving me crazy too. when I press "upload" I get the HTTP error 0, but if i just save then everything works fine.

I was getting this issue and noticed that it was down to the prevent default statements on the submit events for buttons other than the main save button not being fired. So it is obvious that something is breaking jQuery and submitting the form rather than issuing an ajax request. In my case the culprit was Advanced poll including jquery.form.js from its own directory when it was already being included by the admin function. My guess is that by including it twice all of the form event handlers are being overwritten.
If you are getting this issue it is probably worth your time to view the source of your page and see if this file is being included twice. The hard to pin down nature of this issue probably means that it is more than one module doing this.

I resolved my problem by adding "node/add/*" to the Latest poll block exclude path. (i already had admin/* excluded but forgot that in drupal's **** reasoning adding content isn't an admin function)

Reproducing the same issue on Internet Explorer 8 (Win XP) on:

- Drupal 6.22
- jQuery 1.2
- jQuery form plugin 2.01.

Tried to upgrade to:
- jQuery v1.7.1
- jQuery form plugin 2.96

but that doesn't helps.

The problem occurs when I try to upload files larger than ~100K.
There is no any problem for small text files like 1-2Kb or even up to ~100K

But when trying to upload 300K - I receive this strange error Alert displayed:
"An HTTP error 0 occurred\n/upload/js"

Web server error log shows nothing, and even web server access log shows nothing.

BUT web server access log displays successfull POST requests if I upload small files (< 20Kb)
and nothing for file like 300Kb

So it looks like in my case it even doesn't initiates the request to server.

I've installed HTTP sniffer "Fiddler" and it returns error:

"Fiddler has detected a protocol violation in session #453.
Content-Length mismatch: Request Header indicated 382,366 bytes, but client sent 0 bytes."

It looks like IE fails with something like "Out of memory" for large files and doesn't appends body to HTTP requests.

Possibly someone will have any ideas on how to resolve this?

We have been dealing with the issue of FileField not allowing us to upload more than 1MB files and giving us a "HTTP error 0 occurred" message for several months, despite upping the servers upload limit and several other tweaks.

We finally reached a SOLUTION yesterday after 40+ hours of troubleshooting. We are on a MediaTemple Dedicated Virtual Server running Drupal 6.26.

We tried the following edits to the php.ini file:
upload_max_filesize = 64M
post_max_size = 32M
memory_limit = 32M
max_execution_time = 300

That didn't work.

We tried implemented several patches from posts on Drupal.org. None of them worked for us.

And finally the SOLUTION for us was to update to the newest jquery.form.js file (released on 11/20/12) in one of the following directories:

/drupal/misc/jquery.form.js

or if you have the JQuery Update module installed:

/drupal/sites/all/modules/jquery_update/replace/jquery.form.js

The newest version can be found at:
http://malsup.github.com/jquery.form.js

Hope this helps!