Lighttpd

{{{
#!rst ===============
URL Redirection ===============

--------------------
Module: mod_redirect
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.. meta::
:keywords: lighttpd, redirect

.. contents:: Table of Contents

Description ===========

The redirect module is used to specify redirects for a set of URLs.

Options =======

url.redirect
redirects a set of URLs externally

e.g. ::

url.redirect = ( "^/show/([0-9]+)/([0-9]+)$" => "http://www.example.org/show.php?isdn=$1&page$2",
                     "^/get/([0-9]+)/([0-9]+)$"  => "http://www.example.org/get.php?isdn=$1&page$2" )

1. make an external redirect
2. from any www.host (with www.) to the host (without www.)
   $HTTP["host"] =~ "^www\.(.*)$" {
   url.redirect = ( "^/(.*)" => "http://%1/$1" )
   }

Some people love the www part in the url. A general solution to move all non www. hosts to its www equivalent: ::

$HTTP["host"] =~ "^([^.]+\.[^.]+)$" {
      url.redirect = (
        ".*" => "http://www.%1$0" 
      )
    }

Moving any subdomains except a few to www.example.org: (Note: The second match is required since a non-match doesn't set any groups) ::

$HTTP["host"] !~ "^(www|mail|mysql)\.(example\.org)$" {
      $HTTP["host"] =~ "^([^.]+)\.(example\.org)$" {
        url.redirect = (
          "^/(.*)" => "http://www.%2/$1" 
        )
      }
    }

}}}