411 Length Required error

Igor Sysoev is at rambler-co.ru
Sun Aug 17 11:24:06 MSD 2008

On Sun, Aug 17, 2008 at 02:14:18PM +0700, Chris Savery wrote:

> I've been getting this error a lot in my testing. I never received it 
> with Apache. I understand what the message say but not why it's coming 
> about. My headers being sent have length. Or is this message referring 
> to content returned by PHP at the server end? I'm sure one of you 
> experts here knows what's going on with this. I only get it on POST 
> requests and not most of my ajax calls (which are GET).
> Thanks for any help with tracking this down. I'm seeing it in Firebug 
> and when it occurs I cannot see the real response content - even though 
> content is indeed returned as well since it has effect on my javascript 
> code and updates the screen. Weird.
> Chris :)

Set error_log level to info:

error_log  /path/to/log info;

Then nginx will log a reason. Now there are 3 reasons:

"client sent invalid "Content-Length" header"
"client sent ... method without "Content-Length" header"
"client sent "Transfer-Encoding: chunked" header"

The last reason is nginx feature: it still does not support chunked body.

> Response from server:
> <html>
> <head><title>411 Length Required</title></head>
> <body bgcolor="white">
> <center><h1>411 Length Required</h1></center>
> <hr><center>nginx/0.6.32</center>
> </body>
> </html>
> Header sent to server using ajax (only removed some identity info, HOST 
> line):
> User-Agent 	Mozilla/5.0 (X11; U; Linux i686; en-US; rv: 
> Gecko/2008072820 Firefox/3.0.1
> Accept 	text/javascript, text/html, application/xml, text/xml, */*
> Accept-Language 	en-us,en;q=0.5
> Accept-Encoding 	gzip,deflate
> Accept-Charset 	ISO-8859-1,utf-8;q=0.7,*;q=0.7
> Keep-Alive 	300
> Connection 	keep-alive
> X-Requested-With 	XMLHttpRequest
> Content-Type 	application/x-www-form-urlencoded; charset=utf-8
> Referer 	http://www.xxxxx.com/
> Content-Length 	269
> Cookie 	ZZZZSession=3ce34bb3dbc257ff61405175f941f1d7
> Pragma 	no-cache
> Cache-Control 	no-cache

Igor Sysoev

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