you might look into increasing large_client_header_buffers so the
buffer is large enough to hold the cookie.

http://wiki.nginx.org/NginxHttpCoreModule#large_client_header_buffers

V/r,
Rob Schultz

On Jun 13, 2009, at 5:29 PM, snacktime wrote:

> Well I figured out exactly what causes this after getting someone
> that had the errors to install the firefox livehttpheaders plugin.
> It's the cookie size. Cookie too large, nginx returns a 400 and
> doesn't log it. Unfortunately there isn't much we can do about the
> cookie size. With the fb connect iframe stuff there are other
> parties setting cookies on our domain.
>
> I tried in the past upping some buffers because I thought this might
> possibly be an issue, but it didn't help. Maybe I set the wrong
> ones. What specific setting can I use to allow large cookie headers?
>
> Below is a session of one of the requests causing the error:
>
> GET /forums?
> facebook
> =
> 1
> &token
> =
> 56be59ba413134e28e2976e35545960c
> &user_id
> =
> 8
> &app_name
> =
> mogul
> &fb_sig_in_iframe
> =
> 1
> &fb_sig_locale
> =
> en_US
> &fb_sig_in_new_facebook
> =
> 1
> &fb_sig_time
> =
> 1244858147.2827
> &fb_sig_added
> =
> 1
> &fb_sig_profile_update_time
> =
> 1232413305
> &fb_sig_expires
> =
> 0
> &fb_sig_user
> =
> 542007204
> &fb_sig_session_key
> =deec04765ed50ee023ae5cf1-542007204&fb_sig_ext_perms=offline_access
> %2Cemail
> %2Cauto_publish_recent_activity
> &fb_sig_api_key
> =
> cf73a4d662d5ce97b44ec8a9f3121c9d
> &fb_sig_app_id=15420082636&fb_sig=b88fd355c67517fb5d67230415750609
> HTTP/1.1
> Host: facebook.offbeat-creations.com
> User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:
> 1.9.0.11) Gecko/2009060215 Firefox/3.0.11
> Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/
> *;q=0.8
> Accept-Language: en-us
> Accept-Encoding: gzip,deflate
> Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
> Keep-Alive: 300
> Connection: keep-alive
> Referer: http://apps.facebook.com/beatycoon/wall/forums
> Cookie:
> __utma
> =131917208.1556222345328091100.1244852730.1244856612.1244858119.3;
> __utmz=131917208.1244858119.3.3.utmcsr=apps.facebook.com|
> utmccn=(referral)|utmcmd=referral|utmcct=/beatycoon/; user_542007204=
> %5B%7B%22activities%22%3A%22%22%2C%22affiliations%22%3A%5B%7B%22nid
> %22%3A67108883%2C%22name%22%3A%22Seattle%2C%20WA%22%2C%22type%22%3A
> %22region%22%2C%22status%22%3A%22%22%2C%22year%22%3A0%7D%5D%2C
> %22birthday%22%3A%22December%2024%22%2C%22books%22%3A%22%22%2C
> %22current_location%22%3A%7B%22zip%22%3A%22%22%7D%2C
> %22education_history%22%3A%7B%7D%2C%22first_name%22%3A%22Chia%20Chin
> %22%2C%22interests%22%3A%22%22%2C%22meeting_for%22%3A%7B%7D%2C
> %22meeting_sex%22%3A%7B%7D%2C%22movies%22%3A%22%22%2C%22music%22%3A
> %22%22%2C%22name%22%3A%22Chia%20Chin%20Lee%22%2C%22pic%22%3A%22http
> %3A//profile.ak.facebook.com/profile5/772/114/s542007204_148.jpg
> %22%2C%22pic_small%22%3A%22http%3A//profile.ak.facebook.com/
> profile5/772/114/t542007204_148.jpg%22%2C%22relationship_status%22%3A
> %22Married%22%2!
> C%22religion%22%3A%22%22%2C%22sex%22%3A%22male%22%2C%22status%22%3A
> %7B%22message%22%3A%22%22%2C%22time%22%3A0%2C%22status_id%22%3A0%7D
> %2C%22tv%22%3A%22%22%2C%22uid%22%3A542007204%2C%22wall_count
> %22%3A305%2C%22work_history%22%3A%7B%7D%2C%22pic_square%22%3A%22http
> %3A//profile.ak.facebook.com/profile5/772/114/q542007204_148.jpg
> %22%7D%5D; gtl=131174; photos_542007204=%5B%7B%22subject%22%3A
> %22565010917%22%7D%2C%7B%22subject%22%3A%22603403123%22%7D%2C%7B
> %22subject%22%3A%22604053658%22%7D%2C%7B%22subject%22%3A
> %22636124705%22%7D%2C%7B%22subject%22%3A%22639286473%22%7D%2C%7B
> %22subject%22%3A%22644531360%22%7D%2C%7B%22subject%22%3A
> %22679766796%22%7D%2C%7B%22subject%22%3A%22700195562%22%7D%2C%7B
> %22subject%22%3A%22708288958%22%7D%2C%7B%22subject%22%3A
> %22708288958%22%7D%2C%7B%22subject%22%3A%22746248293%22%7D%2C%7B
> %22subject%22%3A%22746248293%22%7D%2C%7B%22subject%22%3A
> %22757564008%22%7D%2C%7B%22subject%22%3A%221165467950%22%7D%2C%7B
> %22subject%22%3A%221165467950%22%7D%2C%7B%22subject%22%!
> 3A%221165467950%22%7D%2C%7B%22subject%22%3A%221182339204%22%7D!
> %2C%7B%2
> 2subject%22%3A%221223236240%22%7D%2C%7B%22subject%22%3A
> %221223236240%22%7D%2C%7B%22subject%22%3A%221223236240%22%7D%2C%7B
> %22subject%22%3A%221303717901%22%7D%2C%7B%22subject%22%3A
> %221303717901%22%7D%2C%7B%22subject%22%3A%221313378551%22%7D%2C%7B
> %22subject%22%3A%221313378551%22%7D%2C%7B%22subject%22%3A
> %221347486368%22%7D%2C%7B%22subject%22%3A%221347486368%22%7D%2C%7B
> %22subject%22%3A%221347486368%22%7D%2C%7B%22subject%22%3A
> %221444025780%22%7D%2C%7B%22subject%22%3A%221507201538%22%7D%2C%7B
> %22subject%22%3A%221536746061%22%7D%2C%7B%22subject%22%3A
> %221536746061%22%7D%2C%7B%22subject%22%3A%221536746061%22%7D%5D;
> __utmb=131917208.4.7.1244858119139; __utmc=131917208;
> mogul_game_session=BAh7DTogX3JmYWNlYm9va19mYnNlc3Npb25faG9sZGVydToiUkZhY2Vib29rOjpGYWNlYm9va1dlYlNlc3Npb24CFAEECHsPIhhAbGFzdF9lcnJvcl9tZXNzYWdlMCILQHF1aWV0RiIQQGFwaV9zZWNyZXQiJWRjM2E5OTAxZDVkNTYxOWRjOGMzYzllMGE5OTcxMjkyIg1AbmV0d29yayINZmFjZWJvb2siEUBzZXNzaW9uX2tleSInZGVlYzA0NzY1ZWQ1MGVlMDIzYWU1Y2YxLTU0MjAwNzIwNCIVQHNlc3Np!
> 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
> %3D%3D--c75e1ae9b191ce2f330ce702f2549ece203baff8;
> fbsetting_cf73a4d662d5ce97b44ec8a9f3121c9d=%7B%22connectState
> %22%3A1%2C%22oneLineStorySetting%22%3A1%2C%22shortStorySetting
> %22%3A1%2C%22inFacebook%2!
> 2%3Atrue%7D; cf73a4d662d5ce97b44ec8a9f3121c9d=dca5f61a4d674f57!
> b6ce07e3
> e1261045; cf73a4d662d5ce97b44ec8a9f3121c9d_user=542007204;
> cf73a4d662d5ce97b44ec8a9f3121c9d_ss
> =d867120f5c1cc5eac268e3cdae6c43cc;
> cf73a4d662d5ce97b44ec8a9f3121c9d_session_key
> =deec04765ed50ee023ae5cf1-542007204;
> cf73a4d662d5ce97b44ec8a9f3121c9d_expires=0
>
> HTTP/1.x 400 Bad Request
> Server: nginx/0.6.34
> Date: Sat, 13 Jun 2009 01:55:53 GMT
> Content-Type: text/html
> Content-Length: 173
> Connection: close
>
> Posted at Nginx Forum: http://forum.nginx.org/read.php?2,2757,2891#msg-2891
>
>