The error handler if an error is thrown.
The error handler if an error is thrown. This is used automatically when an HttpHandler fires a Throwable but can be explicitly used for more specific errors. The error handler is responsible for applying an existing status on the HttpResponse or setting one if the status is a non-error.
Defaults to DefaultErrorHandler
Init is called on start(), but only the first time.
Init is called on start(), but only the first time. If the server is restarted it is not invoked again.