Example usage for java.nio.channels Selector close

Introduction

In this page you can find the example usage for java.nio.channels Selector close.

Prototype

public abstract void close() throws IOException;

Source Link

Document

Closes this selector.

Usage

From source file:com.voxbone.kelpie.Session.java

public void run() {
    Selector sel = null;

    logger.info("[[" + internalCallId + "]] Session thread started: " + this.socketChannel.socket().toString());

    try {/*from www. j  a va 2s. co  m*/
        sel = SelectorProvider.provider().openSelector();
        socketChannel.register(sel, SelectionKey.OP_READ, this);

        while (true) {
            if (sel.select() >= 0) {
                Iterator<SelectionKey> itr = sel.selectedKeys().iterator();
                while (itr.hasNext()) {
                    SelectionKey key = itr.next();
                    itr.remove();
                    if (key.isReadable()) {
                        this.execute();
                    }
                }
            } else {
                logger.error("[[" + internalCallId + "]] Select returned error");
            }
            if (conn.getCurrentStatus().isDisconnected()) {
                break;
            }
        }

        logger.info("[[" + internalCallId + "]] Session Connection finished: "
                + this.socketChannel.socket().toString());
        sel.close();
    } catch (IOException e) {
        logger.error("[[" + internalCallId + "]] Error in xmpp session thread", e);
    } catch (StreamException e) {
        logger.error("[[" + internalCallId + "]] Error in xmpp session thread", e);
    } catch (Exception e) {
        logger.error("[[" + internalCallId + "]] Error in xmpp session thread", e);
    } finally {
        try {
            if (sel != null) {
                sel.close();
            }
        } catch (IOException e) {
            // we are dead already, RIP
        }
    }

    // make sure the connection is closed
    try {
        conn.close();
        conn.disconnect();
        try {
            socketChannel.socket().shutdownInput();
        } catch (IOException e) {
            // ignore
        }
        try {
            socketChannel.socket().shutdownOutput();
        } catch (IOException e) {
            // ignore
        }
        try {
            socketChannel.close();
        } catch (IOException e) {
            // ignore
        }
    } catch (StreamException e) {
        logger.error("[[" + internalCallId + "]] Problem closing stream", e);
    }
}

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From source file:org.apache.axis2.transport.udp.IODispatcher.java

/**
 * Stop the dispatcher./*from   w  ww  .  j a  v a2 s. c  o  m*/
 * This method closes all sockets and causes the execution of the
 * {@link #run()} method to stop.
 * 
 * @throws IOException
 */
public void stop() throws IOException {
    execute(new SelectorOperation() {
        @Override
        public void doExecute(Selector selector) throws IOException {
            IOException exception = null;
            for (SelectionKey key : selector.keys()) {
                try {
                    key.channel().close();
                } catch (IOException ex) {
                    if (exception == null) {
                        exception = ex;
                    }
                }
            }
            try {
                selector.close();
            } catch (IOException ex) {
                if (exception == null) {
                    exception = ex;
                }
            }
            if (exception != null) {
                throw exception;
            }
        }
    });
}

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From source file:org.apache.catalina.cluster.tcp.ReplicationListener.java

public void listen() throws Exception {
    doListen = true;//from  w w  w.j a  v  a  2s . c  o  m
    // allocate an unbound server socket channel
    ServerSocketChannel serverChannel = ServerSocketChannel.open();
    // Get the associated ServerSocket to bind it with
    ServerSocket serverSocket = serverChannel.socket();
    // create a new Selector for use below
    Selector selector = Selector.open();
    // set the port the server channel will listen to
    serverSocket.bind(new InetSocketAddress(bind, port));
    // set non-blocking mode for the listening socket
    serverChannel.configureBlocking(false);
    // register the ServerSocketChannel with the Selector
    serverChannel.register(selector, SelectionKey.OP_ACCEPT);
    while (doListen) {
        // this may block for a long time, upon return the
        // selected set contains keys of the ready channels
        try {

            //System.out.println("Selecting with timeout="+timeout);
            int n = selector.select(timeout);
            //System.out.println("select returned="+n);
            if (n == 0) {
                continue; // nothing to do
            }
            // get an iterator over the set of selected keys
            Iterator it = selector.selectedKeys().iterator();
            // look at each key in the selected set
            while (it.hasNext()) {
                SelectionKey key = (SelectionKey) it.next();
                // Is a new connection coming in?
                if (key.isAcceptable()) {
                    ServerSocketChannel server = (ServerSocketChannel) key.channel();
                    SocketChannel channel = server.accept();
                    registerChannel(selector, channel, SelectionKey.OP_READ,
                            new ObjectReader(channel, selector, callback));
                }
                // is there data to read on this channel?
                //System.out.println("key readable="+key.isReadable());
                if (key.isReadable()) {
                    readDataFromSocket(key);
                } else {
                    //System.out.println("This shouldn't get called");
                    key.interestOps(key.interestOps() & (~key.OP_WRITE));
                }

                // remove key from selected set, it's been handled
                it.remove();
            }
            //System.out.println("Done with loop");
        } catch (java.nio.channels.CancelledKeyException nx) {
            log.warn("Replication client disconnected, error when polling key. Ignoring client.");
        } catch (Exception x) {
            log.error("Unable to process request in ReplicationListener", x);
        }

    } //while
    serverChannel.close();
    selector.close();
}

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From source file:org.pvalsecc.misc.SystemUtilities.java

public static void safeClose(Selector selector) {
    try {/*  w w w. j  a va2 s  . c o  m*/
        if (selector != null)
            selector.close();
    } catch (IOException e) {
        LOGGER.warn("Cannot close", e);
    }
}

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