public static void main(String[] args) {
long sleep_time = 0;
String props = null;
String name = null;
for (int i = 0; i < args.length; i++) {
if ("-props".equals(args[i])) {
props = args[++i];
continue;
}
if ("-sleep".equals(args[i])) {
sleep_time = Long.parseLong(args[++i]);
continue;
}
if ("-name".equals(args[i])) {
name = args[++i];
continue;
}
help();
return;
}
try {
UnicastTest test = new UnicastTest();
test.init(props, sleep_time, name);
test.eventLoop();
} catch (Exception ex) {
System.err.println(ex);
}
}
/**
* Setup the Protocol instance acording to the configuration string The following properties are
* being read by the UDP protocol param mcast_addr - the multicast address to use default is
* 224.0.0.200 param mcast_port - (int) the port that the multicast is sent on default is 7500
* param ip_mcast - (boolean) flag whether to use IP multicast - default is true param ip_ttl -
* Set the default time-to-live for multicast packets sent out on this socket. default is 32
*
* @return true if no other properties are left. false if the properties still have data in them,
* ie , properties are left over and not handled by the protocol stack
*/
public boolean setProperties(Properties props) {
String str, tmp;
tmp = System.getProperty("UDP.bind_addr");
if (tmp != null) {
str = tmp;
} else {
str = props.getProperty("bind_addr");
}
if (str != null) {
try {
bind_addr = InetAddress.getByName(str);
} catch (UnknownHostException unknown) {
Trace.fatal("UDP.setProperties()", "(bind_addr): host " + str + " not known");
return false;
}
props.remove("bind_addr");
}
str = props.getProperty("bind_port");
if (str != null) {
bind_port = new Integer(str).intValue();
props.remove("bind_port");
}
str = props.getProperty("start_port");
if (str != null) {
bind_port = new Integer(str).intValue();
props.remove("start_port");
}
str = props.getProperty("port_range");
if (str != null) {
port_range = new Integer(str).intValue();
props.remove("port_range");
}
str = props.getProperty("mcast_addr");
if (str != null) {
mcast_addr_name = new String(str);
props.remove("mcast_addr");
}
str = props.getProperty("mcast_port");
if (str != null) {
mcast_port = new Integer(str).intValue();
props.remove("mcast_port");
}
str = props.getProperty("ip_mcast");
if (str != null) {
ip_mcast = new Boolean(str).booleanValue();
props.remove("ip_mcast");
}
str = props.getProperty("ip_ttl");
if (str != null) {
ip_ttl = new Integer(str).intValue();
props.remove("ip_ttl");
}
str = props.getProperty("mcast_send_buf_size");
if (str != null) {
mcast_send_buf_size = Integer.parseInt(str);
props.remove("mcast_send_buf_size");
}
str = props.getProperty("mcast_recv_buf_size");
if (str != null) {
mcast_recv_buf_size = Integer.parseInt(str);
props.remove("mcast_recv_buf_size");
}
str = props.getProperty("ucast_send_buf_size");
if (str != null) {
ucast_send_buf_size = Integer.parseInt(str);
props.remove("ucast_send_buf_size");
}
str = props.getProperty("ucast_recv_buf_size");
if (str != null) {
ucast_recv_buf_size = Integer.parseInt(str);
props.remove("ucast_recv_buf_size");
}
str = props.getProperty("loopback");
if (str != null) {
loopback = new Boolean(str).booleanValue();
props.remove("loopback");
}
// this is deprecated, just left for compatibility (use use_incoming_packet_handler)
str = props.getProperty("use_packet_handler");
if (str != null) {
use_incoming_packet_handler = new Boolean(str).booleanValue();
props.remove("use_packet_handler");
Trace.warn(
"UDP.setProperties()",
"'use_packet_handler' is deprecated; use 'use_incoming_packet_handler' instead");
}
str = props.getProperty("use_incoming_packet_handler");
if (str != null) {
use_incoming_packet_handler = new Boolean(str).booleanValue();
props.remove("use_incoming_packet_handler");
}
str = props.getProperty("use_outgoing_packet_handler");
if (str != null) {
use_outgoing_packet_handler = new Boolean(str).booleanValue();
props.remove("use_outgoing_packet_handler");
}
str = props.getProperty("max_bundle_size");
if (str != null) {
int bundle_size = Integer.parseInt(str);
if (bundle_size > max_bundle_size) {
Trace.error(
"UDP.setProperties()",
"max_bundle_size ("
+ bundle_size
+ ") is greater than largest UDP fragmentation size ("
+ max_bundle_size
+ ")");
return false;
}
if (bundle_size <= 0) {
Trace.error("UDP.setProperties()", "max_bundle_size (" + bundle_size + ") is <= 0");
return false;
}
max_bundle_size = bundle_size;
props.remove("max_bundle_size");
}
str = props.getProperty("max_bundle_timeout");
if (str != null) {
max_bundle_timeout = Long.parseLong(str);
if (max_bundle_timeout <= 0) {
Trace.error(
"UDP.setProperties()", "max_bundle_timeout of " + max_bundle_timeout + " is invalid");
return false;
}
props.remove("max_bundle_timeout");
}
str = props.getProperty("enable_bundling");
if (str != null) {
enable_bundling = new Boolean(str).booleanValue();
props.remove("enable_bundling");
}
if (props.size() > 0) {
System.err.println("UDP.setProperties(): the following properties are not recognized:");
props.list(System.out);
return false;
}
if (enable_bundling) {
if (use_outgoing_packet_handler == false) {
Trace.warn(
"UDP.setProperties()",
"enable_bundling is true; setting use_outgoing_packet_handler=true");
}
use_outgoing_packet_handler = true;
}
return true;
}
/**
* Main function
*
* @param args
*/
public static void main(String[] args) {
JWhiteBoard whiteBoard = null;
String props = null;
boolean no_channel = false;
boolean jmx = true;
boolean use_state = false;
String group_name = null;
long state_timeout = 5000;
boolean use_unicasts = false;
String name = null;
boolean send_own_state_on_merge = true;
AddressGenerator generator = null;
// Get startup parameters for JWhiteBoard
for (int i = 0; i < args.length; i++) {
// Show help
if ("-help".equals(args[i])) {
help();
return;
}
// Properties for Channel
if ("-props".equals(args[i])) {
props = args[++i];
continue;
}
// If existed, use no channel
if ("-no_channel".equals(args[i])) {
no_channel = true;
continue;
}
// Use Java Management Extensions or not
if ("-jmx".equals(args[i])) {
jmx = Boolean.parseBoolean(args[++i]);
continue;
}
// If existed, set name for the Group
if ("-clustername".equals(args[i])) {
group_name = args[++i];
continue;
}
// If existed, save Group's state
if ("-state".equals(args[i])) {
use_state = true;
continue;
}
// If existed, set timeout for state
if ("-timeout".equals(args[i])) {
state_timeout = Long.parseLong(args[++i]);
continue;
}
if ("-bind_addr".equals(args[i])) {
System.setProperty("jgroups.bind_addr", args[++i]);
continue;
}
if ("-use_unicasts".equals(args[i])) {
use_unicasts = true;
continue;
}
if ("-name".equals(args[i])) {
name = args[++i];
continue;
}
if ("-send_own_state_on_merge".equals(args[i])) {
send_own_state_on_merge = Boolean.getBoolean(args[++i]);
continue;
}
if ("-uuid".equals(args[i])) {
generator = new OneTimeAddressGenerator(Long.valueOf(args[++i]));
continue;
}
help();
return;
}
try {
whiteBoard =
new JWhiteBoard(
props,
no_channel,
jmx,
use_state,
state_timeout,
use_unicasts,
name,
send_own_state_on_merge,
generator);
if (group_name == null) whiteBoard.setGroupName(group_name);
whiteBoard.go();
} catch (Throwable e) {
e.printStackTrace(System.err);
System.exit(0);
}
}