Java Code Examples for java.nio.channels.SelectableChannel#configureBlocking()

The following examples show how to use java.nio.channels.SelectableChannel#configureBlocking() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: SelectorTest.java    From incubator-tuweni with Apache License 2.0 6 votes vote down vote up 
@Test
void selectorRemovesKeysOnChannelCloseWhenSelecting() throws Exception {
  Pipe pipe = Pipe.open();

  Selector selector = Selector.open();
  SelectableChannel source = pipe.source();
  source.configureBlocking(false);

  SelectionKey key = source.register(selector, OP_READ);
  assertTrue(selector.keys().contains(key));

  source.close();
  assertTrue(selector.keys().contains(key));

  selector.selectNow();
  assertFalse(selector.keys().contains(key));
}
Example 2
Source File: SelectorTest.java    From cava with Apache License 2.0 6 votes vote down vote up 
@Test
void cancelledKeyRemovedFromChannel() throws Exception {
  Pipe pipe = Pipe.open();

  Selector selector = Selector.open();
  SelectableChannel source = pipe.source();
  source.configureBlocking(false);

  for (int i = 0; i < 1000; ++i) {
    assertNull(source.keyFor(selector));

    SelectionKey key = source.register(selector, OP_READ);

    selector.selectedKeys().clear();
    selector.selectNow();

    key.cancel();
    selector.wakeup();

    selector.selectedKeys().clear();
    selector.selectNow();
  }
}
Example 3
Source File: SelectorTest.java    From cava with Apache License 2.0 6 votes vote down vote up 
@Test
void selectorRemovesKeysOnCancelWhenSelecting() throws Exception {
  Pipe pipe = Pipe.open();

  Selector selector = Selector.open();
  SelectableChannel source = pipe.source();
  source.configureBlocking(false);

  SelectionKey key = source.register(selector, OP_READ);
  assertTrue(selector.keys().contains(key));

  key.cancel();
  assertTrue(selector.keys().contains(key));
  assertSame(key, source.keyFor(selector));

  selector.selectNow();
  assertFalse(selector.keys().contains(key));
  assertNull(source.keyFor(selector));
}
Example 4
Source File: SelectorTest.java    From cava with Apache License 2.0 6 votes vote down vote up 
@Test
void selectorRemovesKeysOnChannelCloseWhenSelecting() throws Exception {
  Pipe pipe = Pipe.open();

  Selector selector = Selector.open();
  SelectableChannel source = pipe.source();
  source.configureBlocking(false);

  SelectionKey key = source.register(selector, OP_READ);
  assertTrue(selector.keys().contains(key));

  source.close();
  assertTrue(selector.keys().contains(key));

  selector.selectNow();
  assertFalse(selector.keys().contains(key));
}
Example 5
Source File: Server.java    From TarsJava with BSD 3-Clause "New" or "Revised" License 6 votes vote down vote up 
protected void startNIOServer() throws Exception {
    SelectableChannel server = null;
    int interestKey;

    //1. Start reactor service
    selectorManager.start();

    //2. Start server on the specified port
    if (this.udpMode) {
        server = DatagramChannel.open();
        ((DatagramChannel) server).socket().bind(new InetSocketAddress(host, port));
        interestKey = SelectionKey.OP_READ;
    } else {
        server = ServerSocketChannel.open();
        ((ServerSocketChannel) server).socket().bind(new InetSocketAddress(host, port), 1024);
        interestKey = SelectionKey.OP_ACCEPT;

    }

    server.configureBlocking(false);

    //3. Choose one reactor to handle NIO event
    selectorManager.getReactor(0).registerChannel(server, interestKey);
    System.out.println("INFO: NAMI Server started on port " + String.valueOf(port) + "...");

}
Example 6
Source File: SelectorTest.java    From incubator-tuweni with Apache License 2.0 6 votes vote down vote up 
@Test
void cancelledKeyRemovedFromChannel() throws Exception {
  Pipe pipe = Pipe.open();

  Selector selector = Selector.open();
  SelectableChannel source = pipe.source();
  source.configureBlocking(false);

  for (int i = 0; i < 1000; ++i) {
    assertNull(source.keyFor(selector));

    SelectionKey key = source.register(selector, OP_READ);

    selector.selectedKeys().clear();
    selector.selectNow();

    key.cancel();
    selector.wakeup();

    selector.selectedKeys().clear();
    selector.selectNow();
  }
}
Example 7
Source File: SelectorTest.java    From incubator-tuweni with Apache License 2.0 6 votes vote down vote up 
@Test
void selectorRemovesKeysOnCancelWhenSelecting() throws Exception {
  Pipe pipe = Pipe.open();

  Selector selector = Selector.open();
  SelectableChannel source = pipe.source();
  source.configureBlocking(false);

  SelectionKey key = source.register(selector, OP_READ);
  assertTrue(selector.keys().contains(key));

  key.cancel();
  assertTrue(selector.keys().contains(key));
  assertSame(key, source.keyFor(selector));

  selector.selectNow();
  assertFalse(selector.keys().contains(key));
  assertNull(source.keyFor(selector));
}
Example 8
Source File: AbstractNioChannel.java    From netty4.0.27Learn with Apache License 2.0 6 votes vote down vote up 
/**
 * Create a new instance
 *
 * @param parent            the parent {@link Channel} by which this instance was created. May be {@code null}
 * @param ch                the underlying {@link SelectableChannel} on which it operates
 * @param readInterestOp    the ops to set to receive data from the {@link SelectableChannel}
 */
protected AbstractNioChannel(Channel parent, SelectableChannel ch, int readInterestOp) {
    super(parent);
    this.ch = ch;
    this.readInterestOp = readInterestOp;
    try {
        ch.configureBlocking(false);
    } catch (IOException e) {
        try {
            ch.close();
        } catch (IOException e2) {
            if (logger.isWarnEnabled()) {
                logger.warn(
                        "Failed to close a partially initialized socket.", e2);
            }
        }

        throw new ChannelException("Failed to enter non-blocking mode.", e);
    }
}
Example 9
Source File: SocketIOWithTimeout.java    From RDFS with Apache License 2.0 5 votes vote down vote up 
SocketIOWithTimeout(SelectableChannel channel, long timeout) 
                                               throws IOException {
  checkChannelValidity(channel);
  
  this.channel = channel;
  this.timeout = timeout;
  // Set non-blocking
  channel.configureBlocking(false);
}
Example 10
Source File: NioReceiver.java    From tomcatsrc with Apache License 2.0 5 votes vote down vote up 
/**
 * Register the given channel with the given selector for
 * the given operations of interest
 */
protected void registerChannel(Selector selector,
                               SelectableChannel channel,
                               int ops,
                               Object attach) throws Exception {
    if (channel == null)return; // could happen
    // set the new channel non-blocking
    channel.configureBlocking(false);
    // register it with the selector
    channel.register(selector, ops, attach);
}
Example 11
Source File: SelectorTest.java    From cava with Apache License 2.0 5 votes vote down vote up 
@Test
void selectorRemovesKeysOnChannelCloseWhileSelecting() throws Exception {
  Pipe pipe = Pipe.open();

  Selector selector = Selector.open();
  SelectableChannel source = pipe.source();
  source.configureBlocking(false);

  SelectionKey key = source.register(selector, OP_READ);
  assertTrue(selector.keys().contains(key));

  CountDownLatch latch = new CountDownLatch(1);
  Future<?> job = executor.submit(() -> {
    latch.countDown();
    try {
      selector.select();
    } catch (IOException e) {
      throw new UncheckedIOException(e);
    }
  });

  latch.await();
  Thread.sleep(100);

  source.close();
  selector.wakeup();
  job.get();
  assertFalse(selector.keys().contains(key));
}
Example 12
Source File: SelectorTest.java    From incubator-tuweni with Apache License 2.0 5 votes vote down vote up 
@Test
void selectorRemovesKeysOnChannelCloseWhileSelecting() throws Exception {
  Pipe pipe = Pipe.open();

  Selector selector = Selector.open();
  SelectableChannel source = pipe.source();
  source.configureBlocking(false);

  SelectionKey key = source.register(selector, OP_READ);
  assertTrue(selector.keys().contains(key));

  CountDownLatch latch = new CountDownLatch(1);
  Future<?> job = executor.submit(() -> {
    latch.countDown();
    try {
      selector.select();
    } catch (IOException e) {
      throw new UncheckedIOException(e);
    }
  });

  latch.await();
  Thread.sleep(100);

  source.close();
  selector.wakeup();
  job.get();
  assertFalse(selector.keys().contains(key));
}
Example 13
Source File: SocketIOWithTimeout.java    From stratosphere with Apache License 2.0 5 votes vote down vote up 
SocketIOWithTimeout(SelectableChannel channel, long timeout)
															throws IOException {
	checkChannelValidity(channel);

	this.channel = channel;
	this.timeout = timeout;
	// Set non-blocking
	channel.configureBlocking(false);
}
Example 14
Source File: NioReceiver.java    From Tomcat7.0.67 with Apache License 2.0 5 votes vote down vote up 
/**
 * Register the given channel with the given selector for
 * the given operations of interest
 */
protected void registerChannel(Selector selector,
                               SelectableChannel channel,
                               int ops,
                               Object attach) throws Exception {
    if (channel == null)return; // could happen
    // set the new channel non-blocking
    channel.configureBlocking(false);
    // register it with the selector
    channel.register(selector, ops, attach);
}
Example 15
Source File: SocketIOWithTimeout.java    From hadoop with Apache License 2.0 5 votes vote down vote up 
SocketIOWithTimeout(SelectableChannel channel, long timeout) 
                                               throws IOException {
  checkChannelValidity(channel);
  
  this.channel = channel;
  this.timeout = timeout;
  // Set non-blocking
  channel.configureBlocking(false);
}
Example 16
Source File: ServerConnection.java    From gemfirexd-oss with Apache License 2.0 5 votes vote down vote up 
/**
   * Switch this guy to blocking mode so we can use oldIO to read and write msgs.
   */
  public void makeBlocking() throws IOException {
    //logger.info("DEBUG: makeBlocking " + this);

//     if (this.sKey != null) {
//       this.sKey = null;
//     }
    SelectableChannel c = this.theSocket.getChannel();
    c.configureBlocking(true);
  }
Example 17
Source File: SocketIOWithTimeout.java    From hadoop-gpu with Apache License 2.0 5 votes vote down vote up 
SocketIOWithTimeout(SelectableChannel channel, long timeout) 
                                               throws IOException {
  checkChannelValidity(channel);
  
  this.channel = channel;
  this.timeout = timeout;
  // Set non-blocking
  channel.configureBlocking(false);
}
Example 18
Source File: Client.java    From TarsJava with BSD 3-Clause "New" or "Revised" License 4 votes vote down vote up 
protected synchronized void reConnect() throws IOException {
    //0. Don't send connect request if it is connecting.
    if (isNotConnected()) {
        SocketAddress server = new InetSocketAddress(this.host, this.port);
        SelectableChannel channel = null;
        Session session2 = null;
        int event;

        if (this.udpMode) {
            //1. Create socket channel
            channel = DatagramChannel.open();
            channel.configureBlocking(false);

            //2. Create NioSession for each client connection
            session2 = new UDPSession(this.selectorManager);
            ((UDPSession) session2).setBufferSize(bufferSize);
            ((UDPSession) session2).setTarget(server);
            event = SelectionKey.OP_READ;
            session2.setStatus(SessionStatus.CLIENT_CONNECTED);
        } else {
            //1. Create socket channel
            channel = SocketChannel.open();
            channel.configureBlocking(false);
            try {
                if (this.tc != INVALID_TRAFFIC_CLASS_VALUE) ((SocketChannel) channel).socket().setTrafficClass(this.tc);
            } catch (Exception ex) {
                ex.printStackTrace();
            }
            ((SocketChannel) channel).connect(server);

            //2. Create NioSession for each client connection
            session2 = new TCPSession(this.selectorManager);
            ((TCPSession) session2).setTcpNoDelay(this.tcpNoDelay);
            event = SelectionKey.OP_CONNECT;
        }

        session2.setChannel(channel);
        session2.setKeepAlive(selectorManager.isKeepAlive());

        //3. Register event
        this.selectorManager.nextReactor().registerChannel(channel, event, session2);

        if (!this.udpMode) {
            //4. Wait to connect
            if (!session2.waitToConnect(this.connectTimeout)) {
                session2.asyncClose();
                throw new IOException("connect timed out to " + this.host + ":" + this.port);
            }

            //5. Handle exception
            if (session2.getStatus() == SessionStatus.NOT_CONNECTED) {
                session2.asyncClose();
                throw new IOException("connect failed to " + this.host + ":" + this.port);
            } else if (session2.getStatus() == SessionStatus.CLOSED) { //Already closed
                throw new IOException("connect failed to " + this.host + ":" + this.port); //Please see stderr.log for more details.
            }
        }

        this.session = session2;
    }
}
Example 19
Source File: ServantClient.java    From TarsJava with BSD 3-Clause "New" or "Revised" License 4 votes vote down vote up 
protected synchronized void reConnect() throws IOException {
    if (isNotConnected()) {
        SocketAddress server = new InetSocketAddress(this.host, this.port);
        SelectableChannel channel = null;
        Session temp = null;
        int event;

        if (this.udpMode) {
            channel = DatagramChannel.open();
            channel.configureBlocking(false);

            temp = new UDPSession(this.selectorManager);
            ((UDPSession) temp).setBufferSize(bufferSize);
            ((UDPSession) temp).setTarget(server);
            event = SelectionKey.OP_READ;
            temp.setStatus(SessionStatus.CLIENT_CONNECTED);
        } else {
            channel = SocketChannel.open();
            channel.configureBlocking(false);
            try {
                if (this.tc != INVALID_TRAFFIC_CLASS_VALUE) {
                    ((SocketChannel) channel).socket().setTrafficClass(this.tc);
                }
            } catch (Exception ex) {
                logger.error(ex.getLocalizedMessage());
            }
            ((SocketChannel) channel).connect(server);

            temp = new TCPSession(this.selectorManager);
            ((TCPSession) temp).setTcpNoDelay(this.tcpNoDelay);
            event = SelectionKey.OP_CONNECT;
        }

        temp.setChannel(channel);
        temp.setKeepAlive(selectorManager.isKeepAlive());

        this.selectorManager.nextReactor().registerChannel(channel, event, temp);

        if (!this.udpMode) {
            if (!temp.waitToConnect(this.connectTimeout)) {
                temp.asyncClose();
                throw new TimeoutException("connect " + this.connectTimeout + "ms timed out to " + this.getAddress());
            }

            if (temp.getStatus() == SessionStatus.NOT_CONNECTED) {
                temp.asyncClose();
                throw new NotConnectedException("connect failed to " + this.getAddress());
            } else if (temp.getStatus() == SessionStatus.CLOSED) {
                throw new NotConnectedException("connect failed to " + this.getAddress());
            }
        }
        this.session = temp;
    }
}
Example 20
Source File: NioProcessor.java    From neoscada with Eclipse Public License 1.0 4 votes vote down vote up 
@Override
protected void init(NioSession session) throws Exception {
    SelectableChannel ch = (SelectableChannel) session.getChannel();
    ch.configureBlocking(false);
    session.setSelectionKey(ch.register(selector, SelectionKey.OP_READ, session));
}