Some nasty redirect in a client-side script

[peterbe]

URL: https://console.aws.amazon.com/cloudfront/home
Browser: Firefox
Version: 30.0a2
Problem type: Looks like the website has a bug.
Site owner: No

Steps to Reproduce
Hopefully this short video explains it well enough
http://people.mozilla.org/~pbengtsson/Screencast_2014_03_31_11_20_29.mov

[miketaylr]

Just tried to look into this--unfortunately I don't have an AWS account. Trying to create a test account requires a credit card...

Could someone with an account go to the problematic page in question and save the page (File > Save Page As... All files), zip that up and toss it somewhere publicly accessible? That would help a lot.

[peterbe]

I can save the HTML but that's not reproducible. The main bulk of the page (all the icons) is loaded in with AJAX on page load.

Skimming through the HTML source, I see

(function() {
    ...
        window.onload = function(){
            waitForLoad = false;
            navCss = createElement('csem-nav-css-indicator');
            appCss = createElement('csem-app-css-indicator');
            reportErrors();
        };
})()

That waitForLoad looks suspicious. Also, if the following .js files tries to attach itself to window.onload there might be a bug because this code (mentioned above) hijacks window.onload. Basically if you have

window.onload = function() { console.log('A') }
window.onload = function() { console.log('B') }

it will only ever print out B on the console. Perhaps their code is expecting more from window.onload.

[peterbe]

Twitter shaming

[miketaylr]

Thx @peterbe, looks like I need to actually sign up to be able to debug this further.

[hallvors]

I can save the HTML but that's not reproducible

@peterbe what if you copy the code from "View source" to an editor and save it? With some luck, just adding a BASE HREF tag might give you a page that loads the relevant JS - the AJAX calls will quite likely fail, but we might get enough details to investigate the onload mechanics.

[peterbe]

I did that. Fortunately all CSS and Javascript is referenced to their CDN with an absolute URL.
https://www.dropbox.com/s/t3mrg3fuxyit5x4/home.htm
Unfortunately it's not happening when opening this link locally :(

[hallvors]

Intriguing..! Almost like something that breaks when you load it locally causes the problem?!

[peterbe]

It's happening on this page too
http://blogs.aws.amazon.com/application-management/post/Tx1ZLAHMVBEDCOC/Dockerizing-a-Python-Web-App

At least for me. It's constantly reloading itself.

[hallvors]

Works for me (when not logged in)

Peter, can we talk on IRC or something?

[peterbe]

I'm peterbe on irc. You'll find me in #webdev

[karlcow]

@hallvors @peterbe Is this still going on? Did you talk?
What is the next step?

[peterbe]

May 16 was a very different time in an actively maintained project. I'd consider this closed. Please correct me if it's still a problem.