The blank http request cause performance on ie

[Eric Yan]

When load compact dojo.js,it generates an blank request. Some pc take about 30 seconds to load this request ,the first time open it.

​http://blog.httpwatch.com/2007/11/20/error_internet_invalid_url-httpwatch/comment-page-1/#comment-14186

[James Burke]

This URL should not leave the browser, (you can verify by using a plain HTTP proxy like Charles).

If you comment out that suspect line in dojo.js does the 30 seconds go away?

Perhaps the issue is that it takes IE internally more time than it should to deal with the URL, recognize it as invalid.

I am hoping we will move away from this solution for Dojo 1.5. There is a discussion thread here: ​http://thread.gmane.org/gmane.comp.web.dojo.devel/12154

Also, in Dojo 1.4, you can set djConfig.skipIeDomLoaded = true to bypass the use of the odd URL. But it means all initialization will happen on window onload, after images and iframes load.

[James Burke]

Fixed as part of #10918