Force to Redirect

sub vcl_recv {
if (req.url ~ "mredirect=yes" || req.http.Cookie ~ "X-UA-Device") {
}
elseif (req.http.user-agent ~ "iP(hone|od)|android|(?i)^samsung|(?i)android|(?i)android 3") {
error 750 "Moved Temporarily";
}
}
sub vcl_error {
if (obj.status == 750) {
set obj.http.Location = "http://m.website.com" + req.url;
set obj.status = 301;
return(deliver);
}
}
sub vcl_deliver {
if (resp.http.X-UA-Device == "yes") {
set resp.http.Set-Cookie = resp.http.Set-Cookie +
"; X-UA-Device=yes; expires=" + resp.http.X-UA-Device-expire + "; path=/; domain=.website.com; httponly";
}
}