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Does IE have prefetch header?

Firefox will give a "X-Moz: prefetch" header, will IE give?

   
2:35 pm on Mar 3, 2008 (gmt 0)

5+ Year Member



Hi there

We know firefox will give a header "X-Moz: prefetch" when it perform prefetch, will IE (IE7) do the same thing?

Btw, for this header, do you think it's a fake by spider (because it claw my spidertrap page from different IPs.

Connection: Close
Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, */*
Accept-Language: en-us
Host: www.example.net
User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 2.0.50727; .NET CLR 1.1.4322)
UA-CPU: x86
X-Rewrite-URL: /url.htm

[edited by: tedster at 2:25 am (utc) on Mar. 9, 2008]
[edit reason] switch to example.net - it can never be owned [/edit]

12:56 am on Mar 9, 2008 (gmt 0)

5+ Year Member



I don't think IE7 is responsive to the link type="prefetch" or link type="next" (which was mentioned in the HTML 3.2 standard). The only web pages I was able to find having to do with PreFetch had to do with FireFox 2.
2:34 am on Mar 9, 2008 (gmt 0)

WebmasterWorld Senior Member tedster is a WebmasterWorld Top Contributor of All Time 10+ Year Member



According to IE developer Venkat Kudallur on the IE blog: "Prefetching through html markup or META tags did not make it for IE7, but we do have it on radar for the subsequent rev."

However, there are many applications and add-ons that piggyback on IE. For instance, various ISPs offer their users some kind of "web accelerator" software that might prefetch various links on a page that is already loaded.

That is an interesting snippet you posted - it's only looking for media files of various kinds, not text/html!

8:56 am on Mar 9, 2008 (gmt 0)

5+ Year Member



"""
That is an interesting snippet you posted - it's only looking for media files of various kinds, not text/html!'"""

That's why I think it's a spider

7:58 pm on Mar 9, 2008 (gmt 0)

5+ Year Member



Here is what IE7 is sending from my machine:


Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-ms-application, application/vnd.ms-xpsdocument, application/xaml+xml, application/x-ms-xbap, application/x-shockwave-flash, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, application/x-silverlight, */*

I don't think IE7 puts "text/html" in the Accept header.

The weird header that I don't understand in the original message is:

X-Rewrite-URL: /url.htm

I have only seen this header coming from servers, and not in the GET from a client. This is the weird one that makes me think it might not be a browser sending this request.

7:58 pm on Mar 10, 2008 (gmt 0)

5+ Year Member



Ohh, after you install "ISAPI_Rewrite3_0014_Lite.msi", then will have X-Rewrite header for 404 page. I use it catch 404 errors. I made an unexisit page for spiders.
 

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