Excellent tutorial

[siideffect]

Hello Stéphane,
i found your tutorial some time ago and i found it helpful, essential for my testing project (i needed a web interface from which to control a led).
So, thank you definitely.
Considering im an iOS developer, i dedicated several time to some concepts like the websocket one. However, your tutorial pointed to 2 different types of the protocol setup: ws and wss.
Could you point me to some useful resource about this topic, on how to pass from a ws to a wss/how to implement a wss?
Some instruction like
"You need to"
"and do this, and then this"
will surely help