@Override
public void run() {
Socket connection = null;
while (true) {
try {
connection = _serverSocket.accept();
if (Config.FLOOD_PROTECTION) {
ForeignConnection fConnection =
_floodProtection.get(connection.getInetAddress().getHostAddress());
if (fConnection != null) {
fConnection.connectionNumber += 1;
if ((fConnection.connectionNumber > Config.FAST_CONNECTION_LIMIT
&& (System.currentTimeMillis() - fConnection.lastConnection)
< Config.NORMAL_CONNECTION_TIME)
|| (System.currentTimeMillis() - fConnection.lastConnection)
< Config.FAST_CONNECTION_TIME
|| fConnection.connectionNumber > Config.MAX_CONNECTION_PER_IP) {
fConnection.lastConnection = System.currentTimeMillis();
connection.close();
fConnection.connectionNumber -= 1;
if (!fConnection.isFlooding)
_log.warning(
"Potential Flood from " + connection.getInetAddress().getHostAddress());
fConnection.isFlooding = true;
continue;
}
if (fConnection
.isFlooding) // if connection was flooding server but now passed the check
{
fConnection.isFlooding = false;
_log.info(
connection.getInetAddress().getHostAddress()
+ " is not considered as flooding anymore.");
}
fConnection.lastConnection = System.currentTimeMillis();
} else {
fConnection = new ForeignConnection(System.currentTimeMillis());
_floodProtection.put(connection.getInetAddress().getHostAddress(), fConnection);
}
}
addClient(connection);
} catch (Exception e) {
try {
connection.close();
} catch (Exception e2) {
}
if (this.isInterrupted()) {
// shutdown?
try {
_serverSocket.close();
} catch (IOException io) {
_log.log(Level.INFO, "", io);
}
break;
}
}
}
}
public void removeFloodProtection(String ip) {
if (!Config.FLOOD_PROTECTION) return;
ForeignConnection fConnection = _floodProtection.get(ip);
if (fConnection != null) {
fConnection.connectionNumber -= 1;
if (fConnection.connectionNumber == 0) {
_floodProtection.remove(ip);
}
} else {
_log.warning(
"Removing a flood protection for a GameServer that was not in the connection map??? :"
+ ip);
}
}