Hey Nick,
Seems that I have not interpreted your "I'd suggest a design that allows the user to provide a function that Node-RED will call at the desired" correctly. Thought you meant a separate function.
But an (optional) function for the https setting itself indeed would be better. Have been thinking about that also at the time being, but thought it could break existing nodes that use the current https setting (and which don't test whether it is a function or not).
Will go back to the drawing table, as soon as I have time ...
Enjoy your holidays!!!
That Letsencrypt node was indeed the trigger for this pull request proposal. But I have no time anyway to do it all at once. Unfortunately ...
