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From: "Jason Pyeron" <jpyeron@pdinc.us>
To: "'Tomcat Users List'" <users@tomcat.apache.org>
References: <B7554865-0B7D-40F1-8193-7C19607625B7@gmail.com>
Subject: RE: Request Line Truncated and Caused 501
Date: Wed, 19 Jan 2011 15:05:29 -0500
Organization: PD Inc
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> -----Original Message-----
> From: Yuesong Wang > Sent: Wednesday, January 19, 2011 14:55
> To: users@tomcat.apache.org
> Subject: Request Line Truncated and Caused 501
> 
> Hi,
> 
> I have tomcat 6.0.29 configured using the NIO connector 
> running on linux. My access log shows strange 501 errors like this:
> 

Does the NIO think it is on windows?

> 86.24.156.114 - - [19/Jan/2011:14:41:28 -0500] "eferer: 
> /static/r07/sh30.html " 501 1235 "-" "-"
> 41.203.64.251 - - [19/Jan/2011:14:39:18 -0500] "ET <actual 
> url> HTTP/1.1" 501 1220 "<actual referrer>" "Mozilla/4.0 
> (compatible; MSIE 8.0; Windows NT 6.1; WOW64; Trident/4.0; 
> GTB6.6; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET 
> CLR 3.0.30729; Media Center PC 6.0; CPNTDF; .NET4.0C)"
> 

If chomping off the 0x0A when there is none, you could get this.

> It seems something went wrong while reading the request, and 
> a rather random chunk is treated as the request uri. I 
> thought it had to do with the maxHttpHeaderSize being too 
> small, and tried to reproduce it but couldn't. I suspect the 
> http request itself is malformed, but can't be sure because I 
> can't get to the raw request (RequestDumperValve happens 
> after the raw request is parsed I think).
> 
> Any idea what the problem may be or how to go about 
> investigating this?

Try using a low level tool like curl to reproduce problems.





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This message is copyright PD Inc, subject to license 20080407P00.



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