367079 - "about:neterror" page in iframe does not fire "onload" event

Status: RESOLVED DUPLICATE of bug 444165

(Core :: DOM: Events, defect)

Description

[nrlz]

User-Agent:       Mozilla/5.0 (Macintosh; U; Intel Mac OS X; en-US; rv:1.8.0.9) Gecko/20061206 Firefox/1.5.0.9
Build Identifier: 

We are trying to submit a form to an iframe and detecting when the request is complete by listening for "onload" on the iframe. In normal operations this works. But for certain server errors which trigger the "about:neterror" page, namely "413 Request Entity Too Large" and "DNS errors", the "onload" event doesn't fire. FYI: "Request Entity Too Large" is when the user uploads a large file to Apache and Apache rejects it at the proxy level before the backend scripts even begin to process it. 

I would suspect that this technique will be used more and more as the web uses more AJAX methods. This technique is the only way to upload files to a server and to detect when they are complete.

Reproducible: Always

Steps to Reproduce:
1. See testcase.

Comment 1

[nrlz]

Attachment: testcase: uploading very large files to trigger HTTP 413