To avoid confusion, the MQTT clients does support SSL connections.
Yes, it makes sense to mention that, you are right, Erel !
But,as far as I know, only non-selfed created certificates are supported, issued by certain certificate authorities. My problem is, I only have vservers, which is absolutely fine for pure mqtt. But there is no vserver provider who issue a ssl certificate for vservers (without webserver). At least in Germany
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That brings me to conclusion I need a root server with ssl certificate or I am using mqtt without ssl (which is no option anymore since apple decided not to accept non-ssl anymore)...last option : TLS-PKS.
If there is another option I'more than happy to get a feedback !