nginx + cookies + firefox = 400 Bad Request

[Neil Sheth]

Setting the error_log to info, I'm seeing that a lot of the 400
requests have a corresponding entry in the error log saying "client
closed prematurely connection while reading client request line" - any
suggestions from that?

Thanks!

On Tue, Dec 16, 2008 at 12:22 AM, Igor Sysoev <is at rambler-co.ru> wrote:
> On Mon, Dec 15, 2008 at 05:59:07PM -0800, Neil Sheth wrote:
>
>> I'm continuing to also see issues with nginx returning 400s, I posted
>> another thread about this earlier.  The suggestions here are worth
>> trying, hopefully they help!
>>
>> For the large_client_header_buffers setting, what values are recommended?
>
> To see 400' reasons you should set error_log level to info:
>
> error_log  /path/to/log  info;
>
> They may be not associated with bufers at all.
>
> As to large_client_header_buffers, Apache's default one header limit is 8K:
> http://httpd.apache.org/docs/2.0/mod/core.html#limitrequestfieldsize
>
> nginx's defaults are
>
> client_header_buffer_size    1k;
> large_client_header_buffers  4 4k;
>                        # or 4 8k for sparc64/ppc64 (but not amd64)
>
> You will see in log that these buffers are no enough, you may set
>
> client_header_buffer_size    1k;
> large_client_header_buffers  8 8k;
>
>> Also, for proxy_buffers, I have the following:
>>             proxy_buffer_size          4k;
>>             proxy_buffers              4 32k;
>>             proxy_busy_buffers_size    64k;
>>             proxy_temp_file_write_size 64k;
>>
>> Any suggestions if those should be tweaked in any manner?
>>
>> Thanks!
>>
>>
>>
>> On Mon, Dec 15, 2008 at 2:46 AM, Oliver Pestring <lists at ruby-forum.com> wrote:
>> > Maxim Dounin wrote:
>> >> You should tune large_client_header_buffers in your nginx config, see
>> >> http://wiki.codemongers.com/NginxHttpCoreModule#large_client_header_buffers
>> >> for details.
>> >>
>> >> The problem AFAIK is vbulletin which sets enormous number of
>> >> various cookies.
>> >
>> >
>> > Many thanks guys! It seems that the issue doesnt occur with the
>> > 0.7.26-version. I compiled it manually yesterday evening and vbulletin
>> > and Mantis work perfectly with the previous config until now.
>> > Just to be sure Ive now followed your advices and added some larger
>> > values for large_client_header_buffers and proxy_buffer_size too. Also
>> > switched from cookie-based activity to db-based for vb.
>> >
>> > My testsystem is still on lennys 0.6.32 and here an increased
>> > large_client_header_buffers was even enough to get it working again.
>> > Perfect ;)
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> > --
>> > Posted via http://www.ruby-forum.com/.
>> >
>> >
>
> --
> Igor Sysoev
> http://sysoev.ru/en/
>
>