From: Jim Zhan <firstname.lastname@example.org>
To: Eric Wong <email@example.com>
Subject: Re: Unicorn configuration to increase max header size
Date: Thu, 20 Nov 2014 15:35:26 -0800 [thread overview]
Message-ID: <CAD6h1mi0=2b-iScdD39yeMq7xcyHV7t_esVMHH9MZMDmThFPqQ@mail.gmail.com> (raw)
Thank you for the quick reply. I checked out hosts and we are using Unicorn
3.4.1. Unfortunately there is only one setting for client_body_buffer_size.
So how does this parameter work? Will it only put a limitation on the body
itself or it applied proportionally to header and body (e.g., header 8k,
body 104k, etc).
We did experiments using curl by sending header exceeding 8k manually and I
am getting 404. So it's unicorn itself, not nginx that has the 8k header
The command we used for the experiment:
curl -v -H "$(./http-header-pumper.bat 8000)" <service_url>
The script we used to generate header:
printf "x-header-pump: "
for ((i=0; i<$1; i++))
let "n = $i % 10"
if [ $n = 0 ]; then
printf "%d" $n
Thank you and I am looking forward to hearing from you soon on the issue!
On Thu, Nov 20, 2014 at 1:59 PM, Eric Wong <firstname.lastname@example.org> wrote:
> Jim Zhan <email@example.com> wrote:
> > We are using Unicorn as the http server for one of our ruby applications
> > and we recently encountered an issue that some browsers won't limit the
> > cookie size so we will get requests with http header greater than 8k and
> > users are receiving "400-bad request". Is there a way to increase the
> > maximum allowed header size? I searched online but didn't find a lot of
> > useful information on it.
> This is subject to change in the next major release, but you can
> change it in unicorn 4.x using:
> Unicorn::HttpRequest.max_header_len = <number>
> However, the default is already 112K, so I'm wondering if the 8K is
> the result of your nginx configuration or similar.
next prev parent reply other threads:[~2014-11-20 23:35 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-20 21:54 Unicorn configuration to increase max header size Jim Zhan
2014-11-20 21:59 ` Eric Wong
2014-11-20 23:35 ` Jim Zhan [this message]
2014-11-21 0:31 ` Eric Wong
2014-11-21 1:33 ` Jim Zhan
2014-11-22 3:15 ` Jim Zhan
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