What's your ping frequency? (class::pingfreq)
Best thing is if you would have the same user connected 2 times _at the same time_, so 1 SSL and 1 non-ssl.. and then see if only ssl dies and the other one keeps going on for like an hour.....because when the same user connects via plain connection (no ssl) he can stay connected for..
Is this what you tried? If not, worth doing so :)