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From: Joe Van Dyk <joe@tanga.com>
To: unicorn list <mongrel-unicorn@rubyforge.org>
Subject: Re: Rack content-length Rack::Lint::LintErrors errors with unicorn
Date: Tue, 23 Aug 2011 11:22:01 -0700	[thread overview]
Message-ID: <CACfv+p+RJjgxFa7bY9YfLR6xSRjKVdbw+nUTv=cQgVRp0xuNrA@mail.gmail.com> (raw)
In-Reply-To: <20110822203846.GA16913@dcvr.yhbt.net>

On Mon, Aug 22, 2011 at 1:38 PM, Eric Wong <normalperson@yhbt.net> wrote:
> Joe Van Dyk <joe@tanga.com> wrote:
>> Narrowed this down a little bit more.
>>
>> Nginx is receiving a HEAD request, unicorn is logging a GET.
>> Somewhere along the chain, the http method is getting mangled.
>
> That's not good.  I'm pretty sure all versions of nginx send HEAD
> requests as-is to Unicorn, so something in your Rack middleware stack is
> rewriting HEAD => GET.
>
> You can strace  a Unicorn worker to confirm it receives a HEAD and not a
> GET at the socket level.  Do it on a server that's not receiving any
> other traffic and use one worker process so you're always stracing the
> correct worker process.

I started a new Rails application at
https://github.com/joevandyk/unicorn-head-requests

When I send unicorn a HEAD request, it logs it as a GET.  This shows
up in the unicorn log:
127.0.0.1 - - [23/Aug/2011 11:15:38] "GET / HTTP/1.1" 200 - 0.0231

But this is what shows up in Rails:
Started HEAD "/" for 127.0.0.1 at 2011-08-23 11:15:58 -0700
  Processing by WelcomeController#index as
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  reply	other threads:[~2011-08-23 18:34 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-08-12  4:39 Rack content-length Rack::Lint::LintErrors errors with unicorn Joe Van Dyk
2011-08-12  5:42 ` Eric Wong
2011-08-12 18:09   ` Joe Van Dyk
2011-08-12 19:22     ` Joe Van Dyk
2011-08-12 22:36       ` Eric Wong
2011-08-13  4:09   ` Joe Van Dyk
2011-08-13  4:51     ` Eric Wong
2011-08-13  7:24       ` Joe Van Dyk
2011-08-13  8:29         ` Eric Wong
2011-08-13  7:29       ` Joe Van Dyk
2011-08-13  8:17         ` Eric Wong
2011-08-22 20:13   ` Joe Van Dyk
2011-08-22 20:38     ` Eric Wong
2011-08-23 18:22       ` Joe Van Dyk [this message]
2011-08-23 18:29         ` Joe Van Dyk
2011-08-23 19:54           ` Joe Van Dyk
2011-08-23 20:00             ` Eric Wong

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