/** * 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; } } }