Examples with Selector java.nio.channels.Selector used on opensource projects

Example 36 with Selector

use of java.nio.channels.Selector in project smarthome by eclipse.

the class LifxLightCommunicationHandler method start.

public void start() {
    try {
        lock.lock();
        logger.debug("{} : Starting communication handler", logId);
        logger.debug("{} : Using '{}' as source identifier", logId, Long.toString(sourceId, 16));
        ScheduledFuture<?> localNetworkJob = networkJob;
        if (localNetworkJob == null || localNetworkJob.isCancelled()) {
            networkJob = scheduler.scheduleWithFixedDelay(this::receiveAndHandlePackets, 0, PACKET_INTERVAL, TimeUnit.MILLISECONDS);
        }
        currentLightState.setOffline();
        Selector localSelector = Selector.open();
        selector = localSelector;
        if (isBroadcastEnabled()) {
            broadcastKey = openBroadcastChannel(selector, logId, broadcastPort);
            selectorContext = new LifxSelectorContext(localSelector, sourceId, sequenceNumberSupplier, logId, host, macAddress, broadcastKey, unicastKey);
            broadcastPacket(new GetServiceRequest());
        } else {
            unicastKey = openUnicastChannel(selector, logId, host);
            selectorContext = new LifxSelectorContext(localSelector, sourceId, sequenceNumberSupplier, logId, host, macAddress, broadcastKey, unicastKey);
            sendPacket(new GetServiceRequest());
        }
    } catch (IOException e) {
        logger.error("{} while starting LIFX communication handler for light '{}' : {}", e.getClass().getSimpleName(), logId, e.getMessage(), e);
    } finally {
        lock.unlock();
    }
}

Example 37 with Selector

use of java.nio.channels.Selector in project spf4j by zolyfarkas.

the class TcpServerTest method testRejectingServer.

@Test(expected = IOException.class, timeout = 10000)
public void testRejectingServer() throws IOException, InterruptedException {
    String testSite = "localhost";
    ForkJoinPool pool = new ForkJoinPool(1024);
    try (TcpServer rejServer = new TcpServer(pool, new ClientHandler() {

        @Override
        public void handle(final Selector serverSelector, final SocketChannel clientChannel, final ExecutorService exec, final BlockingQueue<Runnable> tasksToRunBySelector, final UpdateablePriorityQueue<DeadlineAction> deadlineActions) throws IOException {
            clientChannel.configureBlocking(true);
            ByteBuffer allocate = ByteBuffer.allocate(1024);
            // read something
            clientChannel.read(allocate);
            try {
                Thread.sleep(100);
            } catch (InterruptedException ex) {
                throw new RuntimeException(ex);
            }
            allocate.flip();
            clientChannel.write(allocate);
            clientChannel.close();
        }
    }, 1980, 10)) {
        rejServer.startAsync().awaitRunning();
        try (TcpServer server = new TcpServer(pool, new ProxyClientHandler(HostAndPort.fromParts(testSite, 1980), null, null, 10000, 5000), 1981, 10)) {
            server.startAsync().awaitRunning();
            byte[] readfromSite = readfromSite("http://localhost:1981");
            // probably wrong charset assumtion
            LOG.debug("Response: {}", new String(readfromSite, StandardCharsets.UTF_8));
        }
    }
}

Example 38 with Selector

use of java.nio.channels.Selector in project iobserve-analysis by research-iobserve.

the class MultipleConnectionTcpReaderStage method execute.

@Override
protected void execute() {
    try {
        final ServerSocketChannel serverSocket = ServerSocketChannel.open();
        serverSocket.bind(new InetSocketAddress(this.inputPort));
        serverSocket.configureBlocking(false);
        final Selector readSelector = Selector.open();
        while (this.isActive()) {
            final SocketChannel socketChannel = serverSocket.accept();
            if (socketChannel != null) {
                this.logger.debug("Connection from {}.", socketChannel.getRemoteAddress().toString());
                // add socketChannel to list of channels
                socketChannel.configureBlocking(false);
                final SelectionKey key = socketChannel.register(readSelector, SelectionKey.OP_READ);
                final Connection connection = new Connection(socketChannel, this.bufferSize);
                key.attach(connection);
            }
            final int readReady = readSelector.selectNow();
            if (readReady > 0) {
                final Set<SelectionKey> selectedKeys = readSelector.selectedKeys();
                final Iterator<SelectionKey> keyIterator = selectedKeys.iterator();
                while (keyIterator.hasNext()) {
                    final SelectionKey key = keyIterator.next();
                    this.readFromSocket(key);
                    keyIterator.remove();
                }
                selectedKeys.clear();
            }
        }
    } catch (final ClosedByInterruptException e) {
        this.logger.info("External shutdown called");
    } catch (final IOException e) {
        this.logger.error("Cannot establish listening port", e);
    } finally {
        this.workCompleted();
    }
}

Example 39 with Selector

use of java.nio.channels.Selector in project GIPC by pdewan.

the class NioServer method initSelector.

private Selector initSelector() throws IOException {
    // Create a new selector
    Selector socketSelector = SelectorProvider.provider().openSelector();
    // Create a new non-blocking server socket channel
    this.serverChannel = ServerSocketChannel.open();
    serverChannel.configureBlocking(false);
    // Bind the server socket to the specified address and port
    InetSocketAddress isa = new InetSocketAddress(this.hostAddress, this.port);
    serverChannel.socket().bind(isa);
    // Register the server socket channel, indicating an interest in
    // accepting new connections
    serverChannel.register(socketSelector, SelectionKey.OP_ACCEPT);
    return socketSelector;
}

Example 40 with Selector

use of java.nio.channels.Selector in project GIPC by pdewan.

the class NioClientExp method syncWrite.

private void syncWrite(SelectionKey key) throws IOException {
    SocketChannel socketChannel = (SocketChannel) key.channel();
    int ops = key.interestOps();
    key.cancel();
    // socketChannel.register(null, 0);
    SelectableChannel retChannel = socketChannel.configureBlocking(true);
    OutputStream socketOutputStream = socketChannel.socket().getOutputStream();
    // synchronized (this.pendingData) {
    List queue = (List) this.pendingData.get(socketChannel);
    // Write until there's not more data ...
    while (!queue.isEmpty()) {
        ByteBuffer buf = (ByteBuffer) queue.get(0);
        // socketChannel.write(buf);
        // OutputStream socketOutputStream = socketChannel.socket().getOutputStream();
        socketOutputStream.write(buf.array());
        // socketChannel.register(this.selector, ChangeRequest.CHANGEOPS);
        // this seems to fil up
        // if (buf.remaining() > 0) {
        // // ... or the socket's buffer fills up
        // break;
        // }
        queue.remove(0);
    }
    retChannel = socketChannel.configureBlocking(false);
    // initSelector();
    Selector theSelector = this.selector;
    // int ops = ChangeRequest.CHANGEOPS;
    socketChannel.register(theSelector, ops);
    if (queue.isEmpty()) {
        // We wrote away all data, so we're no longer interested
        // in writing on this socket. Switch back to waiting for
        // data.
        key.interestOps(SelectionKey.OP_READ);
    }
}