* @param secure
*/
public void listen(int port, NetSelectionCallback callback, boolean secure)
throws IOException {
ServerSocketChannel ssc = ServerSocketChannel.open();
ssc.configureBlocking(false);
ssc.socket().setReuseAddress(true);
port = verboseBind(ssc, port);
ssc.register(selector_, SelectionKey.OP_ACCEPT, callback);
server_channels_.add(ssc);
if (secure) {