Rack::XStatic Middleware - 'X-Sendfile' for Rack

Posted by stoyan

After I found the Rails X-Sendfile plugin , decided to code something similar for Rack (and Ramaze). The result: Rack::XStatic middleware . Example usage: xfile.ru rackup file . Start it with: 
rackup -s thin -p 7000 xfile.ru
For using it with nginx ’X-Accel-Redirect’ : 
# inside your .ru rackup file:
use Rack::XStatic, :urls => ["/down", "/files"], :root => "public",  :extra => { 
  'X-Sendfile-Type' => 'nginx',
  'X-Accel-Limit-Rate' => '1024',
  'X-Accel-Charset' => 'utf-8'
}
# inside your nginx.conf file:
location ~ ^/(down|files)/ {
  internal;
  root /full/path/to/rack/public;
}

‘X-Sendfile-Type’ can be also ‘lighttpd’ , ‘apache’ or just ‘yes’ for adding only the ‘X-Sendfile’ header.

Rack::XStatic also allow me to add custom headers to the response : 
use Rack::XStatic, :urls => ["/css","/images"], :root => "public", :extra => { 
  'Cache-Control' => 'max-age=86400, public',
  'Expires' => (Time.now + 86400).utc.rfc2822
}
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