@Override
    public void onMessage( String message )
    {
        System.out.println( "SERVER: " + message );
        ServerUser u = currentClient.attachment();

        if (u == null)
        {
            currentClient.close();
        }
        else
        {
            for (ServerUser otherUser : userMap.values())
            {
                otherUser.service.onMessage( u.name, message );
            }
        }
    }