nginix 0.5.34 returns 499's for proxied content

[Dave Cheney]

Hi,

	I just noticed something in our AWStats analysis, a small percentage  
(1.7% by awstats' count) of requests are being returned 499.

71.104.220.183 - - [03/Jan/2008:00:45:56 +1100] "GET /people/dairygirl/ 
art/506041-1-the-view HTTP/1.1" 499 0 "http://www.redbubble.com/people/dairygirl 
" "Mozilla/5.0 (Macintosh; U; Intel Mac OS X; en-us) AppleWebKit/ 
523.10.6 (KHTML, like Gecko) Version/3.0.4 Safari/523.10.6"

	However the rails production log indicates that it send a 200

Jan 03 00:46:35 xserve1 rails[20472]: Parameters: {"action"=>"show",  
"id"=>"506041-1-the-view", "controller"=>"artist/art",  
"person_id"=>"dairygirl"}
Jan 03 00:46:35 xserve1 rails[20472]: Completed in 0.06647 (15 reqs/ 
sec) | Rendering: 0.03452 (51%) | DB: 0.01799 (27%) | 200 OK [http://www.redbubble.com/people/dairygirl/art/506041-1-the-view 
] | Records: 445 | Selects: 25

	Visiting the offending URL with curl or firefox+firebug can't trigger  
the problem. Has anyone seen this behavior before?

Cheers

Dave