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

Example 61 with SelectionKey

use of java.nio.channels.SelectionKey in project Cloud9 by lintool.

the class VocabServer method run.

public void run() {
    System.err.println("Vocab server running...");
    while (true) {
        try {
            selector.select();
        } catch (IOException e) {
            System.err.println("Caught exception in select()");
            e.printStackTrace();
            break;
        }
        if (selector.isOpen() == false)
            break;
        Iterator<SelectionKey> it = selector.selectedKeys().iterator();
        while (it.hasNext()) {
            SelectionKey key = it.next();
            try {
                processSelectionKey(key);
            } catch (IOException e) {
                key.cancel();
                System.err.println("Caught exception handling selection key. Key cancelled");
            }
            it.remove();
        }
    }
    System.err.println("Server exiting.");
    System.err.println("  " + (v.size() - 1) + " types processed");
    System.err.println("  " + connections + " connections");
}

Example 62 with SelectionKey

use of java.nio.channels.SelectionKey in project AndroidAsync by koush.

the class AsyncServer method listen.

public AsyncServerSocket listen(final InetAddress host, final int port, final ListenCallback handler) {
    final ObjectHolder<AsyncServerSocket> holder = new ObjectHolder<AsyncServerSocket>();
    run(new Runnable() {

        @Override
        public void run() {
            ServerSocketChannel closeableServer = null;
            ServerSocketChannelWrapper closeableWrapper = null;
            try {
                closeableServer = ServerSocketChannel.open();
                closeableWrapper = new ServerSocketChannelWrapper(closeableServer);
                final ServerSocketChannel server = closeableServer;
                final ServerSocketChannelWrapper wrapper = closeableWrapper;
                InetSocketAddress isa;
                if (host == null)
                    isa = new InetSocketAddress(port);
                else
                    isa = new InetSocketAddress(host, port);
                server.socket().bind(isa);
                final SelectionKey key = wrapper.register(mSelector.getSelector());
                key.attach(handler);
                handler.onListening(holder.held = new AsyncServerSocket() {

                    @Override
                    public int getLocalPort() {
                        return server.socket().getLocalPort();
                    }

                    @Override
                    public void stop() {
                        StreamUtility.closeQuietly(wrapper);
                        try {
                            key.cancel();
                        } catch (Exception e) {
                        }
                    }
                });
            } catch (IOException e) {
                Log.e(LOGTAG, "wtf", e);
                StreamUtility.closeQuietly(closeableWrapper, closeableServer);
                handler.onCompleted(e);
            }
        }
    });
    return holder.held;
}

Example 63 with SelectionKey

use of java.nio.channels.SelectionKey in project hs4j by killme2008.

the class NioTCPSession method blockingRead.

/**
	 * Blocking read using temp selector
	 * 
	 * @return
	 * @throws ClosedChannelException
	 * @throws IOException
	 */
protected final int blockingRead() throws ClosedChannelException, IOException {
    int n = 0;
    Selector readSelector = SelectorFactory.getSelector();
    SelectionKey tmpKey = null;
    try {
        if (selectableChannel.isOpen()) {
            tmpKey = selectableChannel.register(readSelector, 0);
            tmpKey.interestOps(tmpKey.interestOps() | SelectionKey.OP_READ);
            int code = readSelector.select(500);
            tmpKey.interestOps(tmpKey.interestOps() & ~SelectionKey.OP_READ);
            if (code > 0) {
                do {
                    n = ((ReadableByteChannel) selectableChannel).read(readBuffer.buf());
                    if (log.isDebugEnabled()) {
                        log.debug("use temp selector read " + n + " bytes");
                    }
                } while (n > 0 && readBuffer.hasRemaining());
                readBuffer.flip();
                decode();
                readBuffer.compact();
            }
        }
    } finally {
        if (tmpKey != null) {
            tmpKey.cancel();
            tmpKey = null;
        }
        if (readSelector != null) {
            // Cancel the key.
            readSelector.selectNow();
            SelectorFactory.returnSelector(readSelector);
        }
    }
    return n;
}

Example 64 with SelectionKey

use of java.nio.channels.SelectionKey in project hs4j by killme2008.

the class Reactor method dispatchEvent.

/**
	 * Dispatch selected event
	 * 
	 * @param selectedKeySet
	 */
public final void dispatchEvent(Set<SelectionKey> selectedKeySet) {
    Iterator<SelectionKey> it = selectedKeySet.iterator();
    boolean skipOpRead = false;
    while (it.hasNext()) {
        SelectionKey key = it.next();
        it.remove();
        if (!key.isValid()) {
            if (key.attachment() != null) {
                controller.closeSelectionKey(key);
            } else {
                key.cancel();
            }
            continue;
        }
        try {
            if (key.isValid() && key.isAcceptable()) {
                controller.onAccept(key);
                continue;
            }
            if (key.isValid() && (key.readyOps() & SelectionKey.OP_WRITE) == SelectionKey.OP_WRITE) {
                // Remove write interest
                key.interestOps(key.interestOps() & ~SelectionKey.OP_WRITE);
                controller.onWrite(key);
                if (!controller.isHandleReadWriteConcurrently()) {
                    skipOpRead = true;
                }
            }
            if (!skipOpRead && key.isValid() && (key.readyOps() & SelectionKey.OP_READ) == SelectionKey.OP_READ) {
                key.interestOps(key.interestOps() & ~SelectionKey.OP_READ);
                if (!controller.getStatistics().isReceiveOverFlow()) {
                    // Remove read interest
                    controller.onRead(key);
                } else {
                    key.interestOps(key.interestOps() | SelectionKey.OP_READ);
                }
            }
            if ((key.readyOps() & SelectionKey.OP_CONNECT) == SelectionKey.OP_CONNECT) {
                controller.onConnect(key);
            }
        } catch (CancelledKeyException e) {
        // ignore
        } catch (RejectedExecutionException e) {
            if (key.attachment() instanceof AbstractNioSession) {
                ((AbstractNioSession) key.attachment()).onException(e);
            }
            controller.notifyException(e);
            if (selector.isOpen()) {
                continue;
            } else {
                break;
            }
        } catch (Exception e) {
            if (key.attachment() instanceof AbstractNioSession) {
                ((AbstractNioSession) key.attachment()).onException(e);
            }
            controller.closeSelectionKey(key);
            controller.notifyException(e);
            log.error("Reactor dispatch events error", e);
            if (selector.isOpen()) {
                continue;
            } else {
                break;
            }
        }
    }
}

Example 65 with SelectionKey

use of java.nio.channels.SelectionKey in project hs4j by killme2008.

the class Reactor method checkSessionTimeout.

/**
	 * Check session timeout or idle
	 * 
	 * @return
	 */
private final long checkSessionTimeout() {
    long nextTimeout = 0;
    if (configuration.getCheckSessionTimeoutInterval() > 0) {
        gate.lock();
        try {
            if (selectTries * 1000 >= configuration.getCheckSessionTimeoutInterval()) {
                nextTimeout = configuration.getCheckSessionTimeoutInterval();
                for (SelectionKey key : selector.keys()) {
                    if (key.attachment() != null) {
                        long n = checkExpiredIdle(key, getSessionFromAttchment(key));
                        nextTimeout = n < nextTimeout ? n : nextTimeout;
                    }
                }
                selectTries = 0;
            }
        } finally {
            gate.unlock();
        }
    }
    return nextTimeout;
}