Can someone using CF10 confirm if CF10 supports secure websocket wss://?
On the basis of there being not a single mention of "secure websocket" or "wss" in the CF10 docs (according to Google), and in all the blogging Ray Camden has done on the topic there is not a single mention of it either, and indeed the only relevant match on all of Google for "cf10 wss" is back to this very question, I would say "no".
But that would be rather an odd implementation omission, I think.