What kind of network error is Chrome encountering when 'Status = (failed)' and 'Type = undefined'

javascript google-chrome cross-domain
Stephen Ierodiaconou picture Stephen Ierodiaconou · Apr 12, 2012 · Viewed 28.5k times · Source

Sometimes I randomly see network requests from Chrome failing with Status = '(failed)' (status code 0 from the request object in JavaScript) and the response type as 'undefined' . I cannot isolate why, my internet connection seems to be up and the same endpoint on the server works if requested from say cURL.

Viewing the request details does not show any more response information, only the request info.

I thought it might be missing CORS headers, but I have verified they are there and anyway on a CORS permission problem Chrome reports the status as '(cancelled)'.

Any thoughts? Is it just that the host is unreachable? Why does it seem that all retries from the web app also fail until the browser is restarted?

(failed) request status text in Chrome inspector

Answer

rob5408 picture rob5408 · May 28, 2013

I ran into this while working on an ad serving network. It ended up being the AdBlock Plus Chrome extension blocking any assets, probably the "ad" in the path. I whitelisted my domain and it worked.

Related questions

"Origin null is not allowed by Access-Control-Allow-Origin" in Chrome. Why?

I am working on some Javascript to run locally on my PC. I am using a jQuery CSV plugin (http://plugins.jquery.com/project/csv) to load load a csv file into javascript arrays. The script is simple: $(function(){ $.get("…

Read More
Cross-origin data in HTML5 canvas

I'm loading an image in js and draw it into a canvas. After drawing, i retrieve imageData from the canvas: var img = new Image(); img.onload = function() { canvas.drawImage(img, 0, 0); originalImageData = canvas.getImageData(0,0,width, height)); //chrome fails } img.src = 'picture.…

Read More
Cross-origin image load denied with three.js in chrome

Trying to add material in THREE.js like this var materialWall = new materialClass( { color: 0xffffff, map: THREE.ImageUtils.loadTexture( 'images/a.png' ) } ); It works fine in Chrome, IE, FF, until 3 days ago, after Chrome updated itself to the latest dev …

Read More