예제 #1
0
  /**
   * Open channels for each listen address and register them against this ConnectionHandler's {@link
   * Selector}.
   *
   * @return the number of successfully registered channel
   */
  private int registerChannels() {
    int numRegistered = 0;
    for (InetAddress a : listenAddresses) {
      try {
        ServerSocketChannel channel = ServerSocketChannel.open();
        channel.socket().setReuseAddress(allowReuseAddress);
        channel.socket().bind(new InetSocketAddress(a, listenPort), backlog);
        channel.configureBlocking(false);
        channel.register(selector, SelectionKey.OP_ACCEPT);
        numRegistered++;

        logger.info(NOTE_CONNHANDLER_STARTED_LISTENING, handlerName);
      } catch (Exception e) {
        logger.traceException(e);

        logger.error(
            ERR_LDAP_CONNHANDLER_CREATE_CHANNEL_FAILED,
            currentConfig.dn(),
            a.getHostAddress(),
            listenPort,
            stackTraceToSingleLineString(e));
      }
    }
    return numRegistered;
  }
예제 #2
0
  /**
   * Serves the incoming connections.
   *
   * @throws IOException
   * @throws DirectoryException
   */
  private void serveIncomingConnections() throws IOException, DirectoryException {
    int selectorState = selector.select();

    // We can't rely on return value of select to determine if any keys
    // are ready.
    // see http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4850373
    for (Iterator<SelectionKey> iterator = selector.selectedKeys().iterator();
        iterator.hasNext(); ) {
      SelectionKey key = iterator.next();
      iterator.remove();
      if (key.isAcceptable()) {
        // Accept the new client connection.
        ServerSocketChannel serverChannel = (ServerSocketChannel) key.channel();
        SocketChannel clientChannel = serverChannel.accept();
        if (clientChannel != null) {
          acceptConnection(clientChannel);
        }
      }

      if (selectorState == 0 && enabled && !shutdownRequested && logger.isTraceEnabled()) {
        // Selected keys was non empty but select() returned 0.
        // Log warning and hope it blocks on the next select() call.
        logger.trace(
            "Selector.select() returned 0. "
                + "Selected Keys: %d, Interest Ops: %d, Ready Ops: %d ",
            selector.selectedKeys().size(), key.interestOps(), key.readyOps());
      }
    }
  }