Client closed keepalive connection

[Wilson Bilkovich]

On 4/28/07, Igor Sysoev <is at rambler-co.ru> wrote:
> On Sat, Apr 28, 2007 at 01:02:16PM -0400, Wilson Bilkovich wrote:
>
> > On 4/28/07, Igor Sysoev <is at rambler-co.ru> wrote:
> > >On Fri, Apr 27, 2007 at 09:10:47PM -0700, Cliff Wells wrote:
> > >
> > >> On Fri, 2007-04-27 at 21:53 +0400, Igor Sysoev wrote:
> > >>
> > >> > Does the client do POST and pass "Expect: continue" ?
> > >> > nginx does not support "Expect: continue/100 Continue" dialog because
> > >> > current browsers still do not support it (at least I never see).
> > >>
> > >> I'm not aware of any browsers that support "Expect: continue", however
> > >> there are some tools and libraries that do (curl/libcurl for one).
> > >
> > >As for me, the main use of "Expect: continue/100 Continue" dialog is
> > >the request body limitation. I had even written article (sorry, in Russian)
> > >"Why it's impossible to limit correctly the uploaded file size":
> > >http://sysoev.ru/web/upload.html
> > >
> > >The problem is that browsers do not read server response until they
> > >will send whole request body. If server will close connection before they
> > >have sent body, the browsers issue some network or common error,
> > >that has no relation to the "413 Request Entity Too Large" error.
> > >
> >
> > OK. I've disabled the "100 Continue" piece of the response, and I am
> > still seeing these error messages.
>
> Do you mean these messages ?
>
> With "use kqueue"
> 2007/04/26 22:26:15 [info] 4133#0: *3048 kevent() reported that client
> 192.168.0.100 closed keepalive connection
>
> With "use poll"
> 2007/04/26 22:59:48 [info] 10189#0: *375 client 192.168.0.100 closed
> keepalive connection
>
> They are not actually errors, they are the info messages and this is normal.
> If client is MSIE you will see
>
> "... [info] ... client ... closed keepalive connection (54: Connection
> reset by peer)"
>
> It's also normal: MSIE always closes keep-alive connection with RST packet.
>
>

I guess my question is this.. Why does nginx think that there is a
keepalive connection when, to my knowledge, I have not requested one?
Is this a message I can receive even if there is no keepalive
connection?

I am not using a web browser, but rather an HTTP library, so I have a
good amount of control over the request itself.