require_once( dirname(__FILE__) . '/wp-load.php' );

global $wpdb;

$uri = $_SERVER["REQUEST_URI"];
$pattern = "/^\/(\d{4})\/(\d{2})\/(\d{2})\/([^\d].*|\d+[.^-]*).html$/";
if (preg_match($pattern, $uri, $match) == 1)
{
$year = $match[1];
$month = $match[2];
$mday = $match[3];
$post_name = $match[4];

if ((string)(int)$post_name == $post_name) {
$id = (int)$post_name;
$link = get_permalink($id);
if ($link)
wp_redirect($link, '301'); // Permanent redirect
}
$query = "SELECT post_id FROM $wpdb->postmeta, $wpdb->posts WHERE ID=post_id “.
“AND YEAR(post_date) = $year AND MONTH(post_date) = $month AND DAYOFMONTH(post_date) = $mday “.
“AND post_name = \”$post_name\” LIMIT 1″;

$id = (int)$wpdb->get_var($query);
$link = get_permalink($id);
if ($link) wp_redirect($link, ’301′); // Permanent redirect

$query = “SELECT ID FROM $wpdb->posts WHERE “.
“YEAR(post_date) = $year AND MONTH(post_date) = $month AND DAYOFMONTH(post_date) = $mday “.
“AND post_name = \”$post_name\” LIMIT 1″;
$id = (int)$wpdb->get_var($query);
$link = get_permalink($id);
if ($link) wp_redirect($link, ’301′); // Permanent redirect

$link = “/$year/$month/$mday/”;

if (strstr($_SERVER["HTTP_USER_AGENT"], “Mozilla”) === FALSE) // if it’s not a user
{
wp_redirect($link, ’302′);
}
?>

“>the date archive page. It would be nice if you can report broken links to feuvan#feuvan.net.

Corresponding nginx configuration block:

server {
listen 80;
server_name blog.feuvan.net;

root /home/feuvan/wwwdata/blog;
index index.php;
if (-e $request_filename) {
break;
}

rewrite ^/index.php/(.+)$ /index.php?q=$1 last;
rewrite “^/([0-9]{4})/([0-9]{2})/([0-9]{2})/([^\d].*|\d+[.^-]*).html” /brokenlinkhelper.php last;
#rewrite ^/(.+)$ /index.php?q=$1 last;
rewrite ^/ /index.php last;

location ~ \.php$ {
fastcgi_pass unix:/tmp/php.sock;
}
}

Hope it helps.

                          

Most of the bandwidth of feuvan.net is contributed to a web game proxy using proxy mod of lighttpd 1.4.13 : http://chaoswar.feuvan.net (official: http://alpha.chaoswar.cn:8080 ),  the lighttpd causes many TIME_WAIT connections in high load condition. Therefore, I want to use a powerful proxy like squid to do the proxy work. nginx ( Engine X ) is my selection. Squid is too heavy ;-).

It’s easy to install in debian, just type aptitude install nginx as root. Then I changed lighttpd listening port to localhost:81, and configure nginx to run on 0.0.0.0:80.

nginx.conf:

user www-data;
worker_processes  1;

error_log  /var/log/nginx/error.log;
pid        /var/run/nginx.pid;

events {
    worker_connections  4096;
    use epoll;
}

http {
    include       /etc/nginx/mime.types;
    default_type  application/octet-stream;

    access_log  /var/log/nginx/access.log;

    sendfile        on;
    tcp_nopush     on;

    keepalive_timeout  35;
    tcp_nodelay        on;

    gzip  on;

    server {
        listen       80;

        location / {
            proxy_pass http://127.0.0.1:81;
            include         /etc/nginx/proxy.conf;
        }

    }

    upstream chaoswar_cn {
        server alpha.chaoswar.cn:8080;
    }
    server {
        listen          80;
        server_name     chaoswar.feuvan.net;

        location / {
            proxy_pass http://chaoswar_cn;
            include         /etc/nginx/proxy.conf;
        }
    }
}

proxy.conf:

proxy_redirect          off;
proxy_set_header        Host $host;
proxy_set_header        X-Real-IP $remote_addr;
proxy_set_header        X-Forwarded-For $proxy_add_x_forwarded_for;
client_max_body_size    10m;
client_body_buffer_size 128k;
proxy_connect_timeout   30;
proxy_send_timeout      30;
proxy_read_timeout      30;
proxy_buffer_size       4k;
proxy_buffers           4 32k;
proxy_busy_buffers_size 64k;
proxy_temp_file_write_size 64k;

The most content of configure files are copied from nginx wiki, it’s easy to read. And may be I can do more optimizations like static content (picuture) cache ( expire 30d?). But the main purpose of this article is to show you a general whole picture of the proxy function of Nginx.

BTW, nginx is not just a light-weight squid like proxy server! It’s also a HTTP/MAIL Server.

Anyway, I’m still waiting for 1.5.0 release of lighttpd.

See also: nginx, nginx wiki, lighttpd 1.4.x mod_proxy, lighttpd 1.5.x mod_proxy_core

Nginx vs Lighttpd for a small VPS