This API is available on Firefox OS for privileged or certified applications only.
Summary
The ssl property allows to know if the socket is an SSL socket (true) or not (false).
Syntax
var isSSL = instanceOfTCPSocket.ssl;
Value
A boolean
Specification
Not part of any specification yet; however, this API is discussed at W3C as part of the System Applications Working Group under the Raw Sockets proposal.