/**
* Creates and starts the {@link #sendKeepAliveMessageThread} which is to send STUN keep-alive
* <tt>Message</tt>s to the STUN server associated with the <tt>StunCandidateHarvester</tt> of
* this instance in order to keep the <tt>Candidate</tt>s harvested by this instance alive.
*/
private void createSendKeepAliveMessageThread() {
synchronized (sendKeepAliveMessageSyncRoot) {
Thread t = new SendKeepAliveMessageThread(this);
t.setDaemon(true);
t.setName(getClass().getName() + ".sendKeepAliveMessageThread: " + hostCandidate);
boolean started = false;
sendKeepAliveMessageThread = t;
try {
t.start();
started = true;
} finally {
if (!started && (sendKeepAliveMessageThread == t)) sendKeepAliveMessageThread = null;
}
}
}
