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Re: 500 Error with certain User Agent strings from w3.org

From: Ian Jacobs <ij@w3.org>
Date: Mon, 8 Nov 2010 08:13:48 -0600
To: Dan Quaroni <dq@kayak.com>
Message-Id: <55D16244-689D-4E11-9372-F5B41E58B68C@w3.org>
Cc: site-comments@w3.org

On 5 Nov 2010, at 8:05 AM, Dan Quaroni wrote:

> Hello.  I'm encountering an error retrieving the following document:
>
> http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd
>

Hello Dan,

Please see our blog post on this:
  http://www.w3.org/blog/systeam/2008/02/08/w3c_s_excessive_dtd_traffic

Ian

> When the user agent string Java/1.6.0_16 is passed in..  Details of  
> the request/response at the bottom of this email.
>
> I can successfully retrieve the dtd at this URL if a 'normal'  
> browser user agent is passed in, for example, "Mozilla/5.0 (X11; U;  
> Linux x86_64; en-US) AppleWebKit/534.7 (KHTML, like Gecko) Chrome/ 
> 7.0.517.41 Safari/534.7 "
>
> A reproducible test case is as follows:
>
> WORKS: wget http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd
> WORKS: wget -U 'Mozilla/5.0 (X11; U; Linux x86_64; en-US)  
> AppleWebKit/534.7 (KHTML, like Gecko) Chrome/7.0.517.41 Safari/ 
> 534.7' http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd
> FAILS: wget -U 'Java/1.6.0_16' http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd
>
>
> GET /TR/xhtml1/DTD/xhtml1-transitional.dtd HTTP/1.1
> User-Agent: Java/1.6.0_16
> Host: www.w3..org
> Accept: text/html, image/gif, image/jpeg, *; q=.2, */*; q=.2
> Connection: keep-alive
>
> HTTP/1.0 500 Server Error
> Cache-Control: no-cache
> Connection: close
> Content-Type: text/html
>
> <html><body><h1>500 Server Error</h1>
> An internal server error occured.
> </body></html>
>

--
Ian Jacobs (ij@w3.org)    http://www.w3.org/People/Jacobs/
Tel:                                      +1 718 260 9447
Received on Monday, 8 November 2010 14:13:52 GMT

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