throw new RemoteException("connection failed to host: " + manager.serverName, e1);
throw new ConnectException("connection failed to host: " + manager.serverName, e1);
public RemoteCall newCall(RemoteObject obj, Operation[] op, int opnum, long hash) throws RemoteException {    UnicastConnection conn;    	try {		conn = manager.getConnection();	}	catch (IOException e1) {		throw new RemoteException("connection failed to host: " + manager.serverName, e1);	}    //obj: useless?	return (new UnicastRemoteCall(conn, objid, opnum, hash));}