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request canceled in IE8 - Printable Version

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request canceled in IE8 - nilskuhn - 11-29-2012 09:46 PM

Hi,

we've some "request canceled"-problems in tests with IE8. We use wpt version 2.8 with non-virtualized agents. Same tests in Firefox doesn't have canceled requests.

Example: http://www.webpagetest.org/result/121129_W3_8FM/1/details/

For test-instances of the shop we have even much more canceled requests (see attached waterfall). What could be the reason for cancellation?

Regards, Nils


RE: request canceled in IE8 - pmeenan - 11-30-2012 12:27 AM

Usually cancellations are caused by this: http://blogs.msdn.com/b/ieinternals/archive/2011/07/18/optimal-html-head-ordering-to-avoid-parser-restarts-redownloads-and-improve-performance.aspx

I've never seen it that pervasive or happening to tracking beacons but I guess it's possible if those are loading in an iFrame. It is very much an IE-specific behavior so I wouldn't expect to see it in Firefox or Chrome.