varnish 3.0 + mobile app

[Javier Casares]

Try

sub identify_device {
  if (req.http.User-Agent ~ "mobileapp" ) {
    set req.http.X-UA-Device = "mobileapp";
  } else {
    set req.http.X-UA-Device = "pc";
  }
}

And

sub vcl_hash {
  if (req.http.X-UA-Device) {
    hash_data(req.http.X-UA-Device);
  }
}