How to tell if a servlet is running in hosted mode?

[Nano Elefant]

Hello,
Is there a reliable way to determine if a servlet is running in hosted mode or on a production server (for example from compiled code)?
GWT.isScript() and GWT.isProdMode() can't be used on the server side. So there must be an other way...

[Jens]

As the server has no idea in which mode the client runs, the client has to tell it the server.

The default RpcRequestBuilder adds the header "x-gwt-permutation" to server requests to prevent CSRF attacks. It contains the permutation name in production mode and "HostedMode" when running DevMode. So maybe you can simply evaluate this header in the servlet.

-- J.

[Nano Elefant]

Exactly what I was looking for.
Thank you!