private void unBindImp(InetSocketAddress isa, boolean isLocal) {
		for (SelectionKey key : this.selector.keys()) {
			SocketChannel soc = (SocketChannel) key.channel();
			InetAddress ia = null;
			int port = 0;
			if (isLocal) {
				ia = soc.socket().getLocalAddress();
				port = soc.socket().getLocalPort();
			} else {
				ia = soc.socket().getInetAddress();
				port = soc.socket().getPort();
			}
			if (port == isa.getPort() && isa.getAddress().equals(ia)) {
				key.cancel();
				try {
					soc.close();
				} catch (IOException e) {
					e.printStackTrace();
				}
			}
		}
	}