Nginx proxy to apache ERR_TOO_MANY_REDIRECTS

i have the following setup which uses nginx as proxy to an apache
instance
running prestashop, this works ok, but i get from time to time Error 310
ERR_TOO_MANY_REDIRECTS and i can’t figure out where this is coming from
and
i also get these error in the apache log:

[Sun Jun 09 18:57:01 2013] [error] [client xx.xx.xx.xx] client sent

HTTP/1.1 request without hostname (see RFC2616 section 14.23):
/w00tw00t.at.ISC.SANS.DFind:)
[Sun Jun 09 19:21:29 2013] [error] [client xx.xx.xx.xx] client sent
HTTP/1.1 request without hostname (see RFC2616 section 14.23):
/w00tw00t.at.ISC.SANS.DFind:)

here is my setup:

# nginx -V
nginx version: nginx/1.4.1
TLS SNI support enabled
configure arguments: --prefix=/usr/local/etc/nginx --with-cc-opt='-I

/usr/local/include’ --with-ld-opt=‘-L /usr/local/lib’
–conf-path=/usr/local/etc/nginx/nginx.conf
–sbin-path=/usr/local/sbin/nginx --pid-path=/var/run/nginx.pid
–error-log-path=/var/log/nginx-error.log --user=www --group=www
–with-ipv6
–with-google_perftools_module
–http-client-body-temp-path=/var/tmp/nginx/client_body_temp
–http-fastcgi-temp-path=/var/tmp/nginx/fastcgi_temp
–http-proxy-temp-path=/var/tmp/nginx/proxy_temp
–http-scgi-temp-path=/var/tmp/nginx/scgi_temp
–http-uwsgi-temp-path=/var/tmp/nginx/uwsgi_temp
–http-log-path=/var/log/nginx-access.log --with-http_geoip_module
–with-http_gzip_static_module --with-http_realip_module
–with-http_stub_status_module
–add-module=/usr/ports/www/nginx/work/simpl-ngx_devel_kit-48bc5dd
–add-module=/usr/ports/www/nginx/work/chaoslawful-lua-nginx-module-3915187
–with-pcre
–add-module=/usr/ports/www/nginx/work/yaoweibin-nginx_tcp_proxy_module-b83e5a6
–with-http_ssl_module

# httpd -M
Loaded Modules:
 core_module (static)
 mpm_prefork_module (static)
 http_module (static)
 so_module (static)
 authn_file_module (shared)
 authn_dbm_module (shared)
 authn_anon_module (shared)
 authn_default_module (shared)
 authn_alias_module (shared)
 authz_host_module (shared)
 authz_groupfile_module (shared)
 authz_user_module (shared)
 authz_dbm_module (shared)
 authz_owner_module (shared)
 authz_default_module (shared)
 auth_basic_module (shared)
 auth_digest_module (shared)
 file_cache_module (shared)
 cache_module (shared)
 disk_cache_module (shared)
 dumpio_module (shared)
 reqtimeout_module (shared)
 include_module (shared)
 filter_module (shared)
 charset_lite_module (shared)
 deflate_module (shared)
 log_config_module (shared)
 logio_module (shared)
 env_module (shared)
 mime_magic_module (shared)
 cern_meta_module (shared)
 expires_module (shared)
 headers_module (shared)
 usertrack_module (shared)
 unique_id_module (shared)
 setenvif_module (shared)
 version_module (shared)
 ssl_module (shared)
 mime_module (shared)
 dav_module (shared)
 status_module (shared)
 autoindex_module (shared)
 asis_module (shared)
 info_module (shared)
 cgi_module (shared)
 dav_fs_module (shared)
 vhost_alias_module (shared)
 negotiation_module (shared)
 dir_module (shared)
 imagemap_module (shared)
 actions_module (shared)
 speling_module (shared)
 userdir_module (shared)
 alias_module (shared)
 rewrite_module (shared)
 php5_module (shared)
 rpaf_module (shared)

then in my /usr/local/etc/nginx/nginx.conf i have:

#user  nobody;
worker_processes  4; #x2 per CPU

error_log  /var/www/logs/nginx_error.log  notice;

#pid        logs/nginx.pid;


events {
    worker_connections  1024;
}


http {
    include       mime.types;
    default_type  application/octet-stream;
sendfile        on;

keepalive_timeout  5;

gzip  on;
gzip_http_version 1.1;
gzip_vary on;
gzip_comp_level 6;
gzip_proxied any;
gzip_types text/plain text/css application/json 

application/javascript
application/x-javascript text/javascript text/xml application/xml
application/rss+xml application/atom+xml application/rdf+xml;

gzip_buffers 16 8k;
server {
    listen 178.xxx.xxx.xxx:80;
    server_name test.domain.tld;
    location ~ ^.+\.(jpg|jpeg|gif|png|ico|css|js)$ {
            root /www/domain.tld/http;
            expires max;
            access_log off;
            include custom/prestashop_params;
    }
    include custom/expires_params;
    location / {
            include custom/proxy_params;
            proxy_pass              http://127.0.0.1:81;
    }
}

the custom/prestashop_params are as follows:

# cat custom/prestashop_params
rewrite "^/([a-z]{2})/js/(.+)$" /js/$2 last;
rewrite ^/([0-9])(\-[_a-zA-Z0-9-]*)?(-[0-9]+)?/.+\.jpg$

/img/p/$1/$1$2$3.jpg last;
rewrite ^/([0-9])([0-9])(-[_a-zA-Z0-9-])?(-[0-9]+)?/.+.jpg$
/img/p/$1/$2/$1$2$3$4.jpg last;
rewrite
^/([0-9])([0-9])([0-9])(-[_a-zA-Z0-9-]
)?(-[0-9]+)?/.+.jpg$
/img/p/$1/$2/$3/$1$2$3$4$5.jpg last;
rewrite
^/([0-9])([0-9])([0-9])([0-9])(-[_a-zA-Z0-9-])?(-[0-9]+)?/.+.jpg$
/img/p/$1/$2/$3/$4/$1$2$3$4$5$6.jpg last;
rewrite
^/([0-9])([0-9])([0-9])([0-9])([0-9])(-[_a-zA-Z0-9-]
)?(-[0-9]+)?/.+.jpg$
/img/p/$1/$2/$3/$4/$5/$1$2$3$4$5$6$7.jpg last;
rewrite
^/([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])(-[_a-zA-Z0-9-])?(-[0-9]+)?/.+.jpg$
/img/p/$1/$2/$3/$4/$5/$6/$1$2$3$4$5$6$7$8.jpg last;
rewrite
^/([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])(-[_a-zA-Z0-9-]
)?(-[0-9]+)?/.+.jpg$
/img/p/$1/$2/$3/$4/$5/$6/$7/$1$2$3$4$5$6$7$8$9.jpg last;
rewrite
^/([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])(-[_a-zA-Z0-9-])?(-[0-9]+)?/.+.jpg$
/img/p/$1/$2/$3/$4/$5/$6/$7/$8/$1$2$3$4$5$6$7$8$9$10.jpg last;
rewrite ^/c/([0-9]+)(-[.
a-zA-Z0-9-]*)(-[0-9]+)?/.+.jpg$
/img/c/$1$2$3.jpg last;
rewrite ^/c/([a-zA-Z
-]+)(-[0-9]+)?/.+.jpg$ /img/c/$1$2.jpg last;
rewrite ^/images_ie/?([^/]+).(jpe?g|png|gif)$
/js/jquery/plugins/fancybox/images/$1.$2 last;

and custom/proxy_params:

# cat custom/proxy_params
proxy_set_header        Host            $http_host;
proxy_set_header        X-Real-IP       $remote_addr;
proxy_set_header        X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header        X-NginX-Proxy   true;
proxy_set_header        Range           "";
proxy_set_header        Request-Range   "";
client_max_body_size    10m;
client_body_buffer_size 128k;
proxy_connect_timeout   90;
proxy_send_timeout      90;
proxy_read_timeout      90;
proxy_buffers           16 128k;
proxy_busy_buffers_size 128k;
proxy_buffer_size       128k;
proxy_cache             nginx-cache;
proxy_cache_valid       200 302         60m;
proxy_cache_valid       404             1m;
proxy_redirect          off;

http.conf is setup to listen to port 81 and the vhost is:

<VirtualHost *:81>
    ServerAdmin [email protected]
    DocumentRoot /www/domain.tld/http/
    ServerName domain.tld
    <Directory "/www/domain.tld/http">
        Options Indexes FollowSymLinks
        AllowOverride All
        Order allow,deny
        Allow from all
    </Directory>
    ErrorLog  /www/domain.tld/logs/error_log
    CustomLog /www/domain.tld/logs/access_log common
</VirtualHost>

i also have IPFW setup on my server and have opened both port 80 and 81
but
not sure this has anything to do with it.

is there a way to trace this, so that i can understand it better?
perhaps
the issue is the .htaccess in the /www/domain.tld/http root directory
that
is causing this!

and can this setup be made simpler, as i will have several prestashops
instances running from this server with individual SSL certificates?

any advice much appreciated.

Posted at Nginx Forum:

On 10 June 2013 12:04, khine [email protected] wrote:

i also get these error in the apache log:

[Sun Jun 09 18:57:01 2013] [error] [client xx.xx.xx.xx] client sent

HTTP/1.1 request without hostname (see RFC2616 section 14.23):
/w00tw00t.at.ISC.SANS.DFind:)
[Sun Jun 09 19:21:29 2013] [error] [client xx.xx.xx.xx] client sent
HTTP/1.1 request without hostname (see RFC2616 section 14.23):
/w00tw00t.at.ISC.SANS.DFind:)

Jonathan