protected boolean checkConnectionId(String client_address, long id) {
try {
random_mon.enter();
Long key = new Long(id);
connectionData data = (connectionData) connection_id_map.get(key);
if (data == null) {
// System.out.println( "TRTrackerServerProcessorUDP: rejected:" + id + ", data not found" );
return (false);
} else {
if (SystemTime.getMonotonousTime() - data.getTime() > CONNECTION_ID_LIFETIME) {
return (false);
}
}
boolean ok = data.getAddress().equals(client_address);
// System.out.println( "TRTrackerServerProcessorUDP: tested:" + id + "/" + client_address + "
// -> " + ok );
return (ok);
} finally {
random_mon.exit();
}
}
protected long allocateConnectionId(String client_address) {
try {
random_mon.enter();
long id = random.nextLong();
Long new_key = new Long(id);
connectionData new_data = new connectionData(client_address, id);
// check for timeouts
if (new_data.getTime() - last_timeout_check > 500) {
last_timeout_check = new_data.getTime();
Iterator<Long> it = connection_id_map.keySet().iterator();
while (it.hasNext()) {
Long key = it.next();
connectionData data = connection_id_map.get(key);
if (new_data.getTime() - data.getTime() > CONNECTION_ID_LIFETIME) {
// System.out.println( "TRTrackerServerProcessorUDP: connection id timeout" );
it.remove();
List<connectionData> cds = connection_ip_map.get(client_address);
if (cds != null) {
Iterator<connectionData> it2 = cds.iterator();
while (it2.hasNext()) {
if (it2.next().getID() == key) {
it2.remove();
break;
}
}
if (cds.size() == 0) {
connection_ip_map.remove(client_address);
}
}
} else {
// insertion order into map is time based - LinkedHashMap returns keys in same order
break;
}
}
}
List<connectionData> cds = connection_ip_map.get(client_address);
if (cds == null) {
cds = new ArrayList<connectionData>();
connection_ip_map.put(client_address, cds);
}
cds.add(new_data);
if (cds.size() > 512) {
connectionData dead = cds.remove(0);
connection_id_map.remove(dead.getID());
}
connection_id_map.put(new_key, new_data);
// System.out.println( "TRTrackerServerProcessorUDP: allocated:" + id + ", connection id map
// size = " + connection_id_map.size());
return (id);
} finally {
random_mon.exit();
}
}