private Connection newConnection() {
   Connection c = checkConnectionDuplicity();
   if (c == null) {
     c = new Connection(currentWorld.getWorld(), address, port, netCode);
     connections.add(c);
     c.addConnectionListener(this);
   } else return null;
   return c;
 }
 public Connection newConnection(InetAddress remoteAddress, int remotePort) {
   address = remoteAddress;
   port = remotePort;
   Connection c = checkConnectionDuplicity();
   if (c == null) {
     c = new Connection(currentWorld.getWorld(), remoteAddress, remotePort);
     connections.add(c);
     c.addConnectionListener(this);
   } else return null;
   return c;
 }