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Problem with rewrite or internal redirection cycle

July 18, 2012 11:55AM

I have recently moved my website from Litespeed to nginx. I had to change some lines in my PHP script to use x-sendfile function and because of it I also had to change my nginx config. Unfortunately, when I'm executing my PHP script, I receive 500 Internal Server Error. My error.log says:

2012/07/18 17:39:52 [error] 23510#0: *20011855 rewrite or internal redirection cycle while internal redirect to "/index.php", client:, server: modbase.pl, request: "GET [...]

I'm not sure what's causing this problem and how to fix it and I really need your help.

My nginx website's config:
server {
listen 80;
server_name modbase.pl;
server_name_in_redirect off;
client_max_body_size 1024m;
access_log /home/log/nginx/localhost.access_log;
error_log /home/log/nginx/localhost.error_log;
send_timeout 180;
root /home/modbase.pl/public_html;
index index.php;
# Support Clean (aka Search Engine Friendly) URLs
location / {
client_max_body_size 1024m;
try_files $uri $uri/ /index.php?q=$uri&$args;
proxy_read_timeout 120;
send_timeout 180;
autoindex on;

index index.php index.html index.htm default.html default.htm;
# deny running scripts inside writable directories
location ~* /(images|cache|media|logs|tmp)/.*\.(php|pl|py|jsp|asp|sh|cgi)$ {
return 403;
#error_page 403 /403_error.html;

location ~ .*.php$ {
include /etc/nginx/fastcgi_params;
fastcgi_connect_timeout 320;

fastcgi_read_timeout 320;
client_max_body_size 1024m;
fastcgi_index index.php;
include fastcgi_params;
send_timeout 180;
fastcgi_param SCRIPT_FILENAME /home/modbase.pl/public_html$fastcgi_script_name;

location /downloads {

# caching of files
location ~* \.(ico|pdf|flv)$ {
expires 1y;

location ~* \.(js|css|png|jpg|jpeg|gif|swf|xml|txt)$ {
expires 14d;


My PHP script snippet that uses x-sendfile:

$filename_directoo = '/'.$cat_dir.'/'.$file_url;
header('Content-Disposition: attachment; filename="'.$filename.'"');
Subject Author Posted

Problem with rewrite or internal redirection cycle

drakerc July 18, 2012 11:55AM

Re: Problem with rewrite or internal redirection cycle

Maxim Dounin July 19, 2012 10:30AM

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