XHR request is denoted as being cancelled although it seems to be successful [closed]
There was a bug in Chrome DevTools, it is already fixed: http://code.google.com/p/chromium/issues/detail?id=104920
it may happen when Chrome sees that the actual data doesn’t match the headers.
If you return your answer with header type added, it shouldnt say canceled (Content-type: text/plain. for example)
You can check them by looking Event tabs - response headers.