Nginix 0.5.34 returns 499's for proxied content

Server NGINX
1

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

2

On Wednesday 02 January 2008, Dave C. wrote:

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

special code 499 means client closed connection
before nginx response

3

Thank you very much. I guess my only question is, can I rewrite this
error code to 200 (as the 499 upsets awstats)

Cheers

Dave

4

Are you sure you want it to return 200? My understanding is that the
user
never received the content because they closed the connection.

5

However, from the applications point of view, we handled the request
successfully, and invested processing resources doing so, so it should
be accounted for.

Cheers

Dave

6

That’s why it returned a 4xx error instead of a 5xx error. 4xx errors
(like
404 - File not found, 403 - Unauthorized) tend to be because the client
has
done something wrong, 5xx errors are when the server did something
wrong.