public void start() throws Exception {
if (can_bind_to_mcast_addr) // https://jira.jboss.org/jira/browse/JGRP-836 - prevent cross
// talking on Linux
mcast_sock =
Util.createMulticastSocket(
getSocketFactory(), Global.MPING_MCAST_SOCK, mcast_addr, mcast_port, log);
else mcast_sock = getSocketFactory().createMulticastSocket(Global.MPING_MCAST_SOCK, mcast_port);
mcast_sock.setTimeToLive(ip_ttl);
if (receive_on_all_interfaces
|| (receive_interfaces != null && !receive_interfaces.isEmpty())) {
List<NetworkInterface> interfaces;
if (receive_interfaces != null) interfaces = receive_interfaces;
else interfaces = Util.getAllAvailableInterfaces();
bindToInterfaces(interfaces, mcast_sock, mcast_addr);
} else {
if (bind_addr != null) mcast_sock.setInterface(bind_addr);
mcast_sock.joinGroup(mcast_addr);
}
// 3b. Create mcast sender socket
if (send_on_all_interfaces || (send_interfaces != null && !send_interfaces.isEmpty())) {
List interfaces;
NetworkInterface intf;
if (send_interfaces != null) interfaces = send_interfaces;
else interfaces = Util.getAllAvailableInterfaces();
mcast_send_sockets = new MulticastSocket[interfaces.size()];
int index = 0;
for (Iterator it = interfaces.iterator(); it.hasNext(); ) {
intf = (NetworkInterface) it.next();
mcast_send_sockets[index] = new MulticastSocket();
mcast_send_sockets[index].setNetworkInterface(intf);
mcast_send_sockets[index].setTimeToLive(ip_ttl);
index++;
}
}
startReceiver();
super.start();
}
public void stop() {
Util.close(mcast_sock);
mcast_sock = null;
receiver = null;
super.stop();
}
public void init() throws Exception {
super.init();
if (log.isDebugEnabled())
log.debug(
"bind_addr=" + bind_addr + " mcast_addr=" + mcast_addr + ", mcast_port=" + mcast_port);
}