'Return L{True} if this channel is using a secure transport.
Normally this method returns L{True} if this instance is using a
transport that implements L{interfaces.ISSLTransport}.
@returns: L{True} if this request is secure
@rtype: C{bool}'

def isSecure(self):

    if (interfaces.ISSLTransport(self.transport, None) is not None):
        return True
    return False
