Check if a player with a matching host is already online upon login.
Just pseudocode, may be in need of modification.Code:boolean getStatus(Player p) { try { for (Player q : Server.engine.players) { if (Server.socket.getSocket(p.socket).equals(Server.socket.getSocket(q.socket))) { return true; } } } catch (NullPointerException NPE) { return false; } catch (Exception E) { E.printStackTrace(); } return false; }