Add a HeaderPatternRule to the build-in Jetty Server

I`m searching for a way to add a custom header to the HTTP response of the Jetty Server when delivering certain static files. There is a way to do that as it is described here:

But how can I access the default jetty server instance, or is there another way to achieve this?

If you want to do it statically, then the Jetty configuration file is in:


You can mod this with whatever you need, presumably you were looking at a HeaderPatternRule to force a specific response header so some URL pattern.

Thanks for your answer, but I don’t want to do it statically. This header should only be send while a certain addon is loaded (the cometvisu addon). So I am searching for an programatically way to achieve this.