←  xsendfile.scala 

package ru.circumflex
package web
import java.io.File

X-SendFile feature

Most modern web servers provide the X-SendFile feature: they take control over the process of sending a file to the client. Your application, for example, may check permissions, set some headers, like Content-Disposition, and then delegate the hard stuff to web server.

Refer to the documentation of your favorite web server for more information.

 
trait XSendFileHeader {
  def name: String
  def value(f: File): String
}

object DefaultXSendFileHeader extends XSendFileHeader {
  def name = "X-SendFile"
  def value(f: File): String = f.getAbsolutePath
}

trait NginxXSendFileHeader extends XSendFileHeader {
  def name = "X-Accel-Redirect"
}