Query the current port used via API

Is there an API call I can use from a LifeCycleListener to query all connectors for their ports and configuration (SSL / Plain). I would like to advertise the presence of Tomcat on the network via zeroconf / bonjour. I am hoping there is an API call I can use rather then parse the server.xm

Using JSF Converter to handle NULL values for empty Strings ""

I am using a JSF convert to convert empty string submitted to null values. I am able to see the converter doing it's thing and returning null as expected, however the controller is not updated with a null value, but an empty string instead. I then had a dig around online for the cause of th