reader.scala

def string[T](req: HttpRequest[T])(implicit codec: Codec = Codec.UTF8) = {    
    loan(new InputStreamReader(req.inputStream, codec.charSet)) { reader =>
      val writer = new java.io.StringWriter
      val ca = new Array[Char](4096)
      @scala.annotation.tailrec def read() {
        val len = reader.read(ca)
        if (len > 0) writer.write(ca, 0, len)
        if (len >= 0) read
      }
      read()
      writer.toString
    }
    
}

def loan[A <: java.io.Closeable, B](c: => A)(f: (A) => B): B = {
  val cached = c
  try { f(cached)} finally { cached.close() }
}