Using TLS

      /** 
         Used by the application to add in a new built-in transport.  The transport is
         created and then added to the Transport Selector.
 
         @throws Transport::Exception If the transport couldn't be added, usually
                                      because the port was already bound.
 
         @param protocol              TCP, UDP, TLS, DTLS, etc.
 
         @param port                  Specifies which port to bind to.
 
         @param version               Protocol Version:  V4 or V6
 
         @param ipInterface           Specifies which ethernet interface to bind to. If set to 
                                      Data::Empty, bind to all interfaces.
 
         @param sipDomainname         Only allow messages to 
                                      be sent as the specified domain.  For default case, 
                                      you can pass in domainname = DnsUtil::getLocalDomainName().
 
         @param privateKeyPassPhrase  Private key pass phrase used to decrypt private key 
                                      certificates.  Note:  For now this parameter is not used
                                      we are loading PKCS7 keys, so a pass phrase is not required.
 
         @param sslType               Version of the TLS specification to use:  SSLv23 or TLSv1
      */      
      Transport* addTransport( TransportType protocol,
                         int port, 
                         IpVersion version=V4,
                         StunSetting stun=StunDisabled,
                         const Data& ipInterface = Data::Empty, 
                         const Data& sipDomainname = Data::Empty, // only used
                                                                  // for TLS
                                                                  // based stuff 
                         const Data& privateKeyPassPhrase = Data::Empty,
                         SecurityTypes::SSLType sslType = SecurityTypes::TLSv1);