/** Starts the unicast and multicast receiver threads */
void startThreads() throws Exception {
if (ucast_receiver == null) {
// start the listener thread of the ucast_recv_sock
ucast_receiver = new UcastReceiver();
ucast_receiver.start();
if (Trace.trace) {
Trace.info("UDP.startThreads()", "created unicast receiver thread");
}
}
if (ip_mcast) {
if (mcast_receiver != null) {
if (mcast_receiver.isAlive()) {
if (Trace.trace) {
Trace.info(
"UDP.createThreads()",
"did not create new multicastreceiver thread as existing "
+ "multicast receiver thread is still running");
}
} else {
mcast_receiver = null; // will be created just below...
}
}
if (mcast_receiver == null) {
mcast_receiver = new Thread(this, "UDP mcast receiver");
mcast_receiver.setPriority(Thread.MAX_PRIORITY); // needed ????
mcast_receiver.setDaemon(true);
mcast_receiver.start();
}
}
if (use_outgoing_packet_handler) {
outgoing_packet_handler.start();
}
if (use_incoming_packet_handler) {
incoming_packet_handler.start();
}
}
void stop() {
stopTimer();
super.stop();
}