set $mobile_request '0';
if ($http_user_agent ~* (Android|webOS|iPhone|iPod|BlackBerry)) {
set $mobile_request '1';
}
if ( $request_uri ~* (error)) {
set $mobile_request '2';
}
if ($mobile_request = '0') {
rewrite ^.+ http://www.baidu.com/error.html;
}
