if (!transport.equalsIgnoreCase("UDP")
&& !transport.equalsIgnoreCase("TLS")
&& !transport.equalsIgnoreCase("TCP")
&& !transport.equalsIgnoreCase("SCTP"))
throw new TransportNotSupportedException("bad transport "
+ transport);
/** Reusing an old stack instance */
if (!this.isAlive()) {
this.toExit = false;