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MSN/Live Search SERPs have a malformed http header
Connection: keep-alive, Transfer-Encoding
NemoNemo




msg:3905575
 5:21 pm on May 2, 2009 (gmt 0)

Here are response headers from both search.live.com and search.msn.com. Notice that Connection header has an extrenious "Transfer-Encoding"

HTTP/1.1 200 OK
Content-Type: text/html; charset=utf-8
X-Powered-By: ASP.NET
P3P: CP="NON UNI COM NAV STA LOC CURa DEVa PSAa PSDa OUR IND", policyref="http://privacy.msn.com/w3c/p3p.xml"
Vary: Accept-Encoding
Content-Encoding: gzip
Date: Sat, 02 May 2009 16:56:37 GMT
Transfer-Encoding: chunked
Connection: keep-alive, Transfer-Encoding
Cache-Control: private

I've noticed this problem today using Firefox browser with Live HTTP headers extension. Earlier i reported bad header issues with msnbot. That header error (typo?) seems not to have been fixed yet. Hey MSNDude what's up with MSN and the http header problems?

 

jdMorgan




msg:3905578
 5:34 pm on May 2, 2009 (gmt 0)

They've got other HTTP header problems as well. I note that a particular variant of msnbot/1.1 sends an HTTP From: header reading:
From: If-Modified-Since <appropriate date here>
when fetching pages.

Apparently, they don't have much in the way of quality assurance checking at the most fundamental protocol levels. I'm not sure how you can build up a good search engine when the critical infrastructure has bugs... :(

Jim

NemoNemo




msg:3905667
 9:49 pm on May 2, 2009 (gmt 0)

Ditto.

I've reported the issue via their SERP Feedback link. We'll see if and when they do anything about it.

The reason i noticed it is that this morning search.msn.com servers changed their behavior with respect to Accept-Encoding request header.

[edited by: NemoNemo at 10:00 pm (utc) on May 2, 2009]

msndude




msg:3907323
 5:46 pm on May 5, 2009 (gmt 0)

Hi,

Thanks for reporting this. I'm on it. I'll update you as soon as I have more information!

Brett

msndude




msg:3908028
 4:19 pm on May 6, 2009 (gmt 0)

Update:

We found the cause yesterday and we are working to correct it. Let me know if you continue to have these problems.

Thanks,

Brett

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