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From: Eric Wong <normalperson@yhbt.net>
To: unicorn list <mongrel-unicorn@rubyforge.org>
Subject: Re: Unicorn and HAProxy, 500 Internal errors after checks
Date: Mon, 6 Dec 2010 10:39:24 -0800	[thread overview]
Message-ID: <20101206183924.GA8320@dcvr.yhbt.net> (raw)
In-Reply-To: <5BF35DCB-342A-4902-8DF0-B961A08F9E7F@slofith.org>

russell muetzelfeldt <russm-rubyforge@slofith.org> wrote:
> On 05/12/2010, at 10:38 AM, Eric Wong wrote:
> > Pierre <oct@fotopedia.com> wrote:
> >> On Thu, Dec 2, 2010 at 6:39 PM, Eric Wong <normalperson@yhbt.net> wrote:
> >>> Pierre <oct@fotopedia.com> wrote:
> >>>> Connecting endpoint:
> >>>> 
> >>>> [08:22][virtual] root@infrabox:~# telnet localhost 2002
> >>>> Trying 127.0.0.1...
> >>>> Connected to infrabox.virtual.ftnz.net.
> >>>> Escape character is '^]'.
> >>>> ^]
> >>>> telnet> quit
> >>>> Connection closed.
> >>> 
> >>> Hi, you started writing an HTTP message ("quit" can be a valid HTTP
> >>> method name) and disconnected; don't do that.
> >> 
> >> No, quit is typed in the telnet console and not in the network stream.
> > 
> > Are you sure?  With my telnet, "quit" definitely goes out to the server
> > since you're already connected.

> he connects, then sends an escape ("^]") to the telnet process, then
> types "quit" at the prompt the telnet process shows to tell the local
> telnet process to close the connection.

Ah, I missed the "^]" :x

> the connection *might* see some traffic in attempted telnet option
> negotiation (unless the server end initiates that - I forget), but the
> "quit" string isn't transmitted to the remote end.

Due to TCP_DEFER_ACCEPT, older Linux kernels won't even wake up Unicorn.
Newer ones treat the TCP_DEFER_ARGUMENT as a timeout but it's just a
quick EOFError.

-- 
Eric Wong
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  reply	other threads:[~2010-12-06 19:07 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-12-01 11:59 Unicorn and HAProxy, 500 Internal errors after checks Pierre
2010-12-01 16:12 ` Clifton King
2010-12-01 17:02   ` Pierre
2010-12-01 16:52 ` Eric Wong
2010-12-01 17:14   ` Pierre
2010-12-01 19:58     ` Eric Wong
2010-12-02  0:42       ` Lawrence Pit
2010-12-02  4:59         ` Eric Wong
2010-12-02  8:38       ` Pierre
2010-12-02 17:39         ` Eric Wong
2010-12-03  8:41           ` Pierre
2010-12-04 23:38             ` Eric Wong
2010-12-05  1:04               ` russell muetzelfeldt
2010-12-06 18:39                 ` Eric Wong [this message]
2010-12-02 17:41     ` Eric Wong

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