499 error in nginx

[Igor Sysoev]

On Tue, Aug 28, 2007 at 02:32:46PM +0530, Abhishek Singh wrote:

> On 8/27/07, Abhishek Singh <opensourcelearning at gmail.com> wrote:
> >
> > On 8/27/07, Igor Sysoev <is at rambler-co.ru> wrote:
> > >
> > > On Mon, Aug 27, 2007 at 04:30:59PM +0530, Abhishek Singh wrote:
> > >
> > > > thanks for replying so fast , i am using nginx as a proxy for mongrel
> > > , so
> > > > in this scenario my nginx will be client or browser (who has sent this
> > >
> > > > request) because i am using alertra for website monitoring by urls so
> > > there
> > > > is one url where i am getting error and alertra is showing
> > > >
> > > > Time: 08/27/2007 04:03:09 US/Eastern
> > > >  Abbreviation: slidview
> > > >  URL: http://www.example.com/inet/scalable-web-a
> > > >  Checked From: Atlanta USA
> > > >  Result: Error
> > > >  Result Message: Connection to HTTP service failed
> > > >  Server Code: None
> > > >  Server Message: Unrecognized HTTP error
> > > >  File Size: N/A
> > > >  Elapsed Time: 30.07 Seconds
> > > >
> > > > when i am checking in nginx log so for the same url i am getting 499
> > > from
> > > > www.alertra.com
> > > >
> > > > as per source file definition "when a client closed
> > > > * the connection while we are processing its request" then nginx will
> > > log
> > > > 499 in log file so why alertra will close the connection. or it can
> > > happen
> > > > timeout setting in alertra, there is timeout setting  of 30 second for
> > > that
> > > > url. Igor can u please explain me this.
> > >
> > > I think, the request goes to mongrel and it does not response for
> > > 30 seconds. The client closes connection after its timeout.
> > >
> > > Thanks allot Igor , i was also thinking same thing .
> > I really appreciate ur fast reponse.
> > Keep it up buddy.
> 
> Should i worry about 499 error , is this serious issue for a popular web
> site . Please share your views on this. Waiting for your response .

You may log $request_time. If you see 499 with long $request_time it
means in general that client does not wait your server.


-- 
Igor Sysoev
http://sysoev.ru/en/