List of usage examples for java.nio.channels SocketChannel configureBlocking
public final SelectableChannel configureBlocking(boolean block) throws IOException
From source file:org.gldapdaemon.core.ldap.LDAPListener.java
public final void run() { log.info("LDAP server started successfully."); // Create variables SelectionKey key, newKey;//from ww w . j av a 2s . c o m SocketChannel channel; Socket socket = null; Iterator keys; int n; // Server loop for (;;) { try { // Select sockets try { socket = null; n = selector.select(); } catch (NullPointerException closedError) { // Ignore Selector bug - client socket closed if (log.isDebugEnabled()) { log.debug("Socket closed.", closedError); } sleep(5000); continue; } catch (ClosedSelectorException interrupt) { break; } catch (Exception selectError) { // Unknown exception - stop server log.warn("Unable to select sockets!", selectError); break; } if (n != 0) { // Get an iterator over the set of selected keys keys = selector.selectedKeys().iterator(); if (keys == null) { sleep(5000); continue; } // Look at each key in the selected set while (keys.hasNext()) { key = (SelectionKey) keys.next(); keys.remove(); // Nothing to do if (key == null) { sleep(5000); continue; } // Check key status if (key.isValid()) { // Accept new incoming connection if (key.isAcceptable()) { channel = serverChannel.accept(); if (channel != null) { // Register new socket connection socket = channel.socket(); channel.configureBlocking(false); newKey = channel.register(selector, SelectionKey.OP_READ); processAccept(newKey); } } else { if (key.isReadable()) { // Read from socket connection socket = ((SocketChannel) key.channel()).socket(); processRead(key); } else { // Write to socket connection if (key.isWritable()) { socket = ((SocketChannel) key.channel()).socket(); processWrite(key); } } } } } } } catch (InterruptedException interrupt) { closeSocket(socket); break; } catch (IOException socketClosed) { closeSocket(socket); continue; } catch (Exception processingException) { closeSocket(socket); log.warn(processingException.getMessage(), processingException); } } log.info("LDAP server stopped."); }
From source file:org.jenkinsci.remoting.engine.HandlerLoopbackLoadStress.java
private void startClient(int n, SocketAddress serverAddress, final int clientIntervalMs, final int payloadSize) throws IOException, ExecutionException, InterruptedException, TimeoutException { SocketChannel toServer = SocketChannel.open(); toServer.socket().setKeepAlive(true); toServer.socket().setTcpNoDelay(true); toServer.configureBlocking(true); toServer.connect(serverAddress);/*from w ww . ja v a2 s . com*/ HashMap<String, String> headers = new HashMap<String, String>(); String clientName = runtimeMXBean.getName() + "-client-" + n; headers.put(JnlpConnectionState.CLIENT_NAME_KEY, clientName); headers.put(JnlpConnectionState.SECRET_KEY, secretFor(clientName)); final Channel clientChannel = handler.connect(toServer.socket(), headers, clientListener).get(15, TimeUnit.SECONDS); timer[n % timer.length].scheduleAtFixedRate(new TimerTask() { long start = System.currentTimeMillis(); int index = 0; int times = 0; private NoOpCallable callable = new NoOpCallable(payloadSize == -1 ? null : new byte[payloadSize]); @Override public void run() { try { long start = System.currentTimeMillis(); clientChannel.call(callable); if (config.client != null) { NoOpCallable.noops.incrementAndGet(); } times++; if (times % 1000 == 0) { System.out .println(String.format(" %s has run %d No-op callables. Rate %.1f/s expect %.1f/s", clientChannel.getName(), times, times * 1000.0 / (System.currentTimeMillis() - this.start), 1000.0 / clientIntervalMs)); } long duration = System.currentTimeMillis() - start; if (duration > 250L) { System.err.println(String.format(" %s took %dms to complete a callable", clientChannel.getName(), duration)); } if (callable.payload != null && callable.payload.length > 0) { // mutate the payload to prevent compression int count = callable.payload.length; if (count > 100) { count = 100; } for (int j = 0; j < count; j++) { callable.payload[index] = (byte) (callable.payload[index] * 31 + times); index = Math.abs(index + 1) % callable.payload.length; } } } catch (Exception e) { e.printStackTrace(System.err); IOUtils.closeQuietly(clientChannel); cancel(); System.exit(2); } } }, entropy.nextInt(clientIntervalMs), clientIntervalMs); }
From source file:org.onlab.nio.service.IOLoopMessaging.java
/** * Initiates open connection request and registers the pending socket * channel with the given IO loop.//w ww .j a v a 2s .c om * * @param loop loop with which the channel should be registered * @throws java.io.IOException if the socket could not be open or connected */ private DefaultMessageStream createConnection(Endpoint ep, DefaultIOLoop loop) throws IOException { SocketAddress sa = new InetSocketAddress(ep.host().toString(), ep.port()); SocketChannel ch = SocketChannel.open(); ch.configureBlocking(false); DefaultMessageStream stream = loop.connectStream(ch); ch.connect(sa); return stream; }
From source file:org.openhab.binding.irtrans.handler.EthernetBridgeHandler.java
protected void onAcceptable() { lock.lock();/*w ww . j ava 2 s . c o m*/ try { try { selector.selectNow(); } catch (IOException e) { logger.debug("An exception occurred while selecting: {}", e.getMessage()); updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.COMMUNICATION_ERROR, e.getMessage()); } Iterator<SelectionKey> it = selector.selectedKeys().iterator(); while (it.hasNext()) { SelectionKey selKey = it.next(); it.remove(); if (selKey.isValid()) { if (selKey.isAcceptable() && selKey == listenerKey) { try { SocketChannel newChannel = listenerChannel.accept(); newChannel.configureBlocking(false); logger.trace("Received a connection request from '{}'", newChannel.getRemoteAddress()); synchronized (selector) { selector.wakeup(); newChannel.register(selector, newChannel.validOps()); } } catch (IOException e) { logger.debug("An exception occurred while accepting a connection on channel '{}': {}", listenerChannel, e.getMessage()); updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.COMMUNICATION_ERROR, e.getMessage()); } } } } } finally { lock.unlock(); } }
From source file:org.openhab.binding.tcp.AbstractSocketChannelBinding.java
/** * @{inheritDoc}/* w w w. j a va 2 s . c o m*/ */ @Override protected void execute() { // Cycle through the Items and setup channels if required for (P provider : providers) { for (String itemName : provider.getItemNames()) { for (Command aCommand : ((P) provider).getAllCommands(itemName)) { String remoteHost = ((P) provider).getHost(itemName, aCommand); String remotePort = ((P) provider).getPortAsString(itemName, aCommand); Direction direction = ((P) provider).getDirection(itemName, aCommand); InetSocketAddress remoteAddress = null; if (!(remoteHost.equals("*") || remotePort.equals("*"))) { remoteAddress = new InetSocketAddress(remoteHost, Integer.parseInt(remotePort)); } Channel newChannel = null; Channel existingChannel = null; if (useAddressMask && (remoteHost.equals("*") || remotePort.equals("*"))) { newChannel = new Channel(itemName, aCommand, remoteHost, remotePort, ((P) provider).getDirection(itemName, aCommand), false, null, false, null); existingChannel = channels.get(itemName, aCommand, direction, remoteHost, remotePort); } else { newChannel = new Channel(itemName, aCommand, remoteAddress, ((P) provider).getDirection(itemName, aCommand), false, null, false, null); existingChannel = channels.get(itemName, aCommand, direction, remoteAddress); } if (existingChannel == null) { if (direction == Direction.IN) { boolean assigned = false; if (useAddressMask && (remoteHost.equals("*") || remotePort.equals("*"))) { logger.warn( "When using address masks we will not verify if we are already listening to similar incoming connections"); logger.info("We will accept data coming from the remote end {}:{}", remoteHost, remotePort); channels.add(newChannel); } else { if (itemShareChannels) { Channel firstChannel = channels.getFirstServed(itemName, direction, remoteAddress); if (firstChannel != null) { newChannel.channel = firstChannel.channel; assigned = true; } } if (bindingShareChannels) { Channel firstChannel = channels.getFirstServed(direction, remoteAddress); if (firstChannel != null) { newChannel.channel = firstChannel.channel; assigned = true; } } if (directionsShareChannels) { Channel firstChannel = channels.getFirstServed(remoteAddress); if (firstChannel != null) { newChannel.channel = firstChannel.channel; assigned = true; } } if (!assigned || newChannel.channel == null) { if (channels.contains(itemName, aCommand, Direction.IN, remoteAddress)) { logger.warn("We already listen for incoming connections from {}", remoteAddress); } else { logger.debug("Setting up the inbound channel {}", newChannel); channels.add(newChannel); logger.info("We will accept data coming from the remote end {}", remoteAddress); } } } } else if (direction == Direction.OUT) { boolean assigned = false; if (useAddressMask && (remoteHost.equals("*") || remotePort.equals("*"))) { logger.error( "We do not accept outgoing connections for Items that do use address masks"); } else { channels.add(newChannel); if (newChannel.channel == null) { if (itemShareChannels) { Channel firstChannel = channels.getFirstServed(itemName, direction, remoteAddress); if (firstChannel != null) { newChannel.channel = firstChannel.channel; assigned = true; } } if (bindingShareChannels) { Channel firstChannel = channels.getFirstServed(direction, remoteAddress); if (firstChannel != null) { newChannel.channel = firstChannel.channel; assigned = true; } } if (directionsShareChannels) { Channel firstChannel = channels.getFirstServed(remoteAddress); if (firstChannel != null) { newChannel.channel = firstChannel.channel; assigned = true; } } if (assigned) { logger.debug("Setting up the outbound assigned channel {} ", newChannel); } synchronized (this) { if (!assigned || newChannel.channel == null) { SocketChannel newSocketChannel = null; try { newSocketChannel = SocketChannel.open(); } catch (IOException e2) { logger.error("An exception occurred while opening a channel: {}", e2.getMessage()); } try { newSocketChannel.socket().setKeepAlive(true); newSocketChannel.configureBlocking(false); } catch (IOException e) { logger.error( "An exception occurred while configuring a channel: {}", e.getMessage()); } synchronized (selector) { selector.wakeup(); int interestSet = SelectionKey.OP_READ | SelectionKey.OP_WRITE | SelectionKey.OP_CONNECT; try { newSocketChannel.register(selector, interestSet); } catch (ClosedChannelException e1) { logger.error( "An exception occurred while registering a selector: {}", e1.getMessage()); } } newChannel.channel = newSocketChannel; logger.debug("Setting up the outbound channel {}", newChannel); try { logger.info("Connecting the channel {} ", newChannel); newSocketChannel.connect(remoteAddress); } catch (IOException e) { logger.error("An exception occurred while connecting a channel: {}", e.getMessage()); } } } } else { logger.info("There is already an active channel {} for the remote end {}", newChannel.channel, newChannel.remote); } } } } } } } // Check on channels for which we have to process data synchronized (selector) { try { // Wait for an event selector.selectNow(); } catch (IOException e) { logger.error("An exception occurred while Selecting ({})", e.getMessage()); } } // Get list of selection keys with pending events Iterator<SelectionKey> it = selector.selectedKeys().iterator(); // Process each key at a time while (it.hasNext()) { SelectionKey selKey = (SelectionKey) it.next(); it.remove(); if (selKey.isValid()) { if (selKey == listenerKey) { if (selKey.isAcceptable()) { try { SocketChannel newChannel = listenerChannel.accept(); logger.info("Received connection request from {}", newChannel.getRemoteAddress()); Channel firstChannel = channels.getFirstNotServed(Direction.IN, (InetSocketAddress) newChannel.getRemoteAddress()); if (firstChannel != null) { if (firstChannel.direction == Direction.IN) { if (useAddressMask && (firstChannel.host.equals("*") || firstChannel.port.equals("*"))) { logger.info( "{}:{} is an allowed masked remote end. The channel will now be configured", firstChannel.host, firstChannel.port); } else { logger.info( "{} is an allowed remote end. The channel will now be configured", firstChannel.remote); } if (firstChannel.channel == null || !firstChannel.channel.isOpen()) { firstChannel.channel = newChannel; firstChannel.isBlocking = false; firstChannel.buffer = null; if (itemShareChannels) { channels.replace(firstChannel.item, firstChannel.direction, (InetSocketAddress) newChannel.getRemoteAddress(), firstChannel.channel); } if (bindingShareChannels) { channels.replace(firstChannel.direction, (InetSocketAddress) newChannel.getRemoteAddress(), firstChannel.channel); } if (directionsShareChannels) { channels.replace((InetSocketAddress) newChannel.getRemoteAddress(), firstChannel.channel); } try { newChannel.configureBlocking(false); //setKeepAlive(true); } catch (IOException e) { logger.error("An exception occurred while configuring a channel: {}", e.getMessage()); } synchronized (selector) { selector.wakeup(); try { newChannel.register(selector, newChannel.validOps()); } catch (ClosedChannelException e1) { logger.error( "An exception occurred while registering a selector: {}", e1.getMessage()); } } Scheduler scheduler = null; try { scheduler = StdSchedulerFactory.getDefaultScheduler(); } catch (SchedulerException e1) { logger.error( "An exception occurred while getting the Quartz scheduler: {}", e1.getMessage()); } JobDataMap map = new JobDataMap(); map.put("Channel", firstChannel); map.put("Binding", this); JobDetail job = newJob(ConfigureJob.class).withIdentity( Integer.toHexString(hashCode()) + "-Configure-" + Long.toString(System.currentTimeMillis()), this.toString()).usingJobData(map).build(); Trigger trigger = newTrigger().withIdentity( Integer.toHexString(hashCode()) + "-Configure-" + Long.toString(System.currentTimeMillis()), this.toString()).startNow().build(); try { if (job != null && trigger != null && selKey != listenerKey) { scheduler.scheduleJob(job, trigger); } } catch (SchedulerException e) { logger.error( "An exception occurred while scheduling a job with the Quartz Scheduler {}", e.getMessage()); } } else { logger.info( "We previously already accepted a connection from the remote end {} for this channel. Goodbye", firstChannel.remote); newChannel.close(); } } else { logger.info( "Disconnecting the remote end {} that tries to connect an outbound only port", newChannel.getRemoteAddress()); newChannel.close(); } } else { logger.info("Disconnecting the unallowed remote end {}", newChannel.getRemoteAddress()); newChannel.close(); } } catch (IOException e) { logger.error("An exception occurred while configuring a channel: {}", e.getMessage()); } } } else { SocketChannel theSocketChannel = (SocketChannel) selKey.channel(); Channel theChannel = channels.get(theSocketChannel); if (selKey.isConnectable()) { channels.setAllReconnecting(theSocketChannel, false); boolean result = false; boolean error = false; try { result = theSocketChannel.finishConnect(); } catch (NoConnectionPendingException e) { // this channel is not connected and a connection operation // has not been initiated logger.warn("The channel {} has no connection pending ({})", theSocketChannel, e.getMessage()); error = true; } catch (ClosedChannelException e) { // If some other I/O error occurs logger.warn("The channel {} is closed ({})", theSocketChannel, e.getMessage()); error = true; } catch (IOException e) { // If some other I/O error occurs logger.warn("The channel {} has encountered an unknown IO Exception: {}", theSocketChannel, e.getMessage()); error = true; } if (error) { Scheduler scheduler = null; try { scheduler = StdSchedulerFactory.getDefaultScheduler(); } catch (SchedulerException e1) { logger.error("An exception occurred while getting the Quartz scheduler: {}", e1.getMessage()); } JobDataMap map = new JobDataMap(); map.put("Channel", theChannel); map.put("Binding", this); JobDetail job = newJob(ReconnectJob.class) .withIdentity(Integer.toHexString(hashCode()) + "-Reconnect-" + Long.toString(System.currentTimeMillis()), this.toString()) .usingJobData(map).build(); Trigger trigger = newTrigger() .withIdentity(Integer.toHexString(hashCode()) + "-Reconnect-" + Long.toString(System.currentTimeMillis()), this.toString()) .startAt(futureDate(reconnectInterval, IntervalUnit.SECOND)).build(); try { if (job != null && trigger != null && selKey != listenerKey) { if (!theChannel.isReconnecting) { channels.setAllReconnecting(theSocketChannel, true); scheduler.scheduleJob(job, trigger); } } } catch (SchedulerException e) { logger.error( "An exception occurred while scheduling a job with the Quartz Scheduler {}", e.getMessage()); } } else { if (result) { InetSocketAddress remote = null; try { remote = (InetSocketAddress) theSocketChannel.getRemoteAddress(); } catch (IOException e) { logger.error( "An exception occurred while getting the remote address of channel {} ({})", theSocketChannel, e.getMessage()); } logger.info("The channel for {} is now connected", remote); if (itemShareChannels) { channels.replace(theChannel.item, theChannel.direction, remote, theChannel.channel); } if (bindingShareChannels) { channels.replace(theChannel.direction, remote, theChannel.channel); } if (directionsShareChannels) { channels.replace(remote, theChannel.channel); } Scheduler scheduler = null; try { scheduler = StdSchedulerFactory.getDefaultScheduler(); } catch (SchedulerException e1) { logger.error("An exception occurred while getting the Quartz scheduler: {}", e1.getMessage()); } JobDataMap map = new JobDataMap(); map.put("Channel", theChannel); map.put("Binding", this); JobDetail job = newJob(ConfigureJob.class) .withIdentity( Integer.toHexString(hashCode()) + "-Configure-" + Long.toString(System.currentTimeMillis()), this.toString()) .usingJobData(map).build(); Trigger trigger = newTrigger() .withIdentity( Integer.toHexString(hashCode()) + "-Configure-" + Long.toString(System.currentTimeMillis()), this.toString()) .startNow().build(); try { if (job != null && trigger != null && selKey != listenerKey) { scheduler.scheduleJob(job, trigger); } } catch (SchedulerException e) { logger.error( "An exception occurred while scheduling a job with the Quartz Scheduler {}", e.getMessage()); } job = newJob(ReconnectJob.class) .withIdentity( Integer.toHexString(hashCode()) + "-Reconnect-" + Long.toString(System.currentTimeMillis()), this.toString()) .usingJobData(map).build(); trigger = newTrigger() .withIdentity( Integer.toHexString(hashCode()) + "-Reconnect-" + Long.toString(System.currentTimeMillis()), this.toString()) .withSchedule(cronSchedule(reconnectCron)).build(); try { if (job != null && trigger != null && selKey != listenerKey) { scheduler.scheduleJob(job, trigger); } } catch (SchedulerException e) { logger.error( "An exception occurred while scheduling a job with the Quartz Scheduler {}", e.getMessage()); } } } } else if (selKey.isReadable()) { ByteBuffer readBuffer = ByteBuffer.allocate(maximumBufferSize); int numberBytesRead = 0; boolean error = false; try { //TODO: Additional code to split readBuffer in multiple parts, in case the data send by the remote end is not correctly fragemented. Could be handed of to implementation class if for example, the buffer needs to be split based on a special character like line feed or carriage return numberBytesRead = theSocketChannel.read(readBuffer); } catch (NotYetConnectedException e) { logger.warn("The channel for {} has no connection pending ({})", theChannel.remote, e.getMessage()); if (!theSocketChannel.isConnectionPending()) { error = true; } } catch (IOException e) { // If some other I/O error occurs logger.warn("The channel for {} has encountered an unknown IO Exception: {}", theChannel.remote, e.getMessage()); error = true; } if (numberBytesRead == -1) { try { theSocketChannel.close(); } catch (IOException e) { logger.warn("The channel for {} is closed ({})", theChannel.remote, e.getMessage()); } error = true; } if (error) { if (theChannel.direction == Direction.OUT) { Scheduler scheduler = null; try { scheduler = StdSchedulerFactory.getDefaultScheduler(); } catch (SchedulerException e1) { logger.error("An exception occurred while getting the Quartz scheduler: {}", e1.getMessage()); } JobDataMap map = new JobDataMap(); map.put("Channel", theChannel); map.put("Binding", this); JobDetail job = newJob(ReconnectJob.class).withIdentity( Integer.toHexString(hashCode()) + "-Reconnect-" + Long.toString(System.currentTimeMillis()), "AbstractSocketChannelBinding").usingJobData(map).build(); Trigger trigger = newTrigger() .withIdentity( Integer.toHexString(hashCode()) + "-Reconnect-" + Long.toString(System.currentTimeMillis()), "AbstractSocketChannelBinding") .startAt(futureDate(reconnectInterval, IntervalUnit.SECOND)).build(); try { if (job != null && trigger != null && selKey != listenerKey) { if (!theChannel.isReconnecting) { channels.setAllReconnecting(theSocketChannel, true); scheduler.scheduleJob(job, trigger); } } } catch (SchedulerException e) { logger.error( "An exception occurred while scheduling a job with the Quartz Scheduler {}", e.getMessage()); } } else { theChannel.channel = null; } } else { ArrayList<Channel> channelsToServe = new ArrayList<Channel>(); channelsToServe = channels.getAll(theSocketChannel); if (channelsToServe.size() > 0) { readBuffer.flip(); boolean isBlocking = channels.isBlocking(theSocketChannel); if (isBlocking) { // if we are in a blocking operation, we get are now finished and we have to reset the flag. The read buffer will be returned to the instance // that initiated the write opreation - it has to parse the buffer itself theChannel = channels.getBlocking(theSocketChannel); theChannel.buffer = readBuffer; theChannel.isBlocking = false; } else { for (Channel aChannel : channelsToServe) { // if not, then we parse the buffer as ususal parseChanneledBuffer(aChannel, readBuffer); } } } else { try { logger.warn( "No channel is active or defined for the data we received from {}. It will be discarded.", theSocketChannel.getRemoteAddress()); } catch (IOException e) { logger.error( "An exception occurred while getting the remote address of the channel {} ({})", theSocketChannel, e.getMessage()); } } } } else if (selKey.isWritable()) { boolean isBlocking = channels.isBlocking(theSocketChannel); if (isBlocking) { // if this channel is already flagged as being in a blocked write/read operation, we skip this selKey } else { // pick up a QueueElement for this channel, if any WriteBufferElement theElement = null; Iterator<WriteBufferElement> iterator = writeQueue.iterator(); while (iterator.hasNext()) { WriteBufferElement anElement = iterator.next(); if (anElement.channel.channel.equals(theSocketChannel)) { theElement = anElement; break; } } if (theElement != null && theElement.buffer != null) { logger.debug("Picked {} from the queue", theElement); if (theElement.isBlocking) { theElement.channel.isBlocking = true; } boolean error = false; theElement.buffer.rewind(); try { logger.debug("Sending {} for the outbound channel {}->{}", new Object[] { new String(theElement.buffer.array()), theElement.channel.channel.getLocalAddress(), theElement.channel.channel.getRemoteAddress() }); theSocketChannel.write(theElement.buffer); } catch (NotYetConnectedException e) { logger.warn("The channel for {} has no connection pending ({})", theChannel.remote, e.getMessage()); if (!theSocketChannel.isConnectionPending()) { error = true; } } catch (ClosedChannelException e) { // If some other I/O error occurs logger.warn("The channel for {} is closed ({})", theChannel.remote, e.getMessage()); error = true; } catch (IOException e) { // If some other I/O error occurs logger.warn("The channel for {} has encountered an unknown IO Exception: {}", theChannel.remote, e.getMessage()); error = true; } if (error) { if (theElement.channel.direction == Direction.OUT) { Scheduler scheduler = null; try { scheduler = StdSchedulerFactory.getDefaultScheduler(); } catch (SchedulerException e1) { logger.error( "An exception occurred while getting the Quartz scheduler: {}", e1.getMessage()); } JobDataMap map = new JobDataMap(); map.put("Channel", theElement.channel); map.put("Binding", this); JobDetail job = newJob(ReconnectJob.class).withIdentity( Integer.toHexString(hashCode()) + "-Reconnect-" + Long.toString(System.currentTimeMillis()), "AbstractSocketChannelBinding").usingJobData(map).build(); Trigger trigger = newTrigger() .withIdentity( Integer.toHexString(hashCode()) + "-Reconnect-" + Long.toString(System.currentTimeMillis()), "AbstractSocketChannelBinding") .startAt(futureDate(reconnectInterval, IntervalUnit.SECOND)) .build(); try { if (job != null && trigger != null && selKey != listenerKey) { if (!theElement.channel.isReconnecting) { channels.setAllReconnecting(theSocketChannel, true); scheduler.scheduleJob(job, trigger); } } } catch (SchedulerException e) { logger.error( "An exception occurred while scheduling a job with the Quartz Scheduler {}", e.getMessage()); } } else { theElement.channel.channel = null; } } else { if (theElement != null) { writeQueue.remove(theElement); } } } } } } } } }
From source file:org.openhab.io.transport.cul.internal.network.CULNetworkHandlerImpl.java
private void configureChannel(SocketChannel channel) throws IOException { channel.configureBlocking(false); channel.socket().setSendBufferSize(0x100000); // 1Mb channel.socket().setReceiveBufferSize(0x100000); // 1Mb channel.socket().setKeepAlive(true); channel.socket().setReuseAddress(true); channel.socket().setSoLinger(false, 0); channel.socket().setSoTimeout(0);// w w w . j a v a2 s . c om channel.socket().setTcpNoDelay(true); }
From source file:org.pvalsecc.comm.MultiplexedServer.java
private void createNewClientConnection(SelectionKey key) { SocketChannel socket = null; try {/*from ww w.j a va 2 s . c om*/ ServerSocketChannel serverSocketChannel = (ServerSocketChannel) key.channel(); socket = serverSocketChannel.accept(); } catch (IOException e) { LOGGER.error("Cannot accept the connection from a new client", e); SystemUtilities.safeClose(socket); return; } SelectionKey newKey; try { socket.configureBlocking(false); newKey = socket.register(selector, SelectionKey.OP_READ); } catch (IOException e) { LOGGER.error("Cannot add a new client socket to the selector", e); SystemUtilities.safeClose(socket); return; } ServerConnection connection = newConnection(newKey); newKey.attach(connection); if (LOGGER.isInfoEnabled()) { LOGGER.info("[" + threadName + "] New connection from " + connection); } }
From source file:org.quickserver.net.server.QuickServer.java
/** * Starts server in non-blocking mode./*from w w w. ja v a 2 s . c o m*/ * @since 1.4.5 */ private void runNonBlocking(TheClient theClient) throws Exception { int selectCount = 0; Iterator iterator = null; SelectionKey key = null; ServerSocketChannel serverChannel = null; SocketChannel socketChannel = null; Socket client = null; ClientHandler _chPolled = null; boolean stopServerProcessed = false; int linger = getBasicConfig().getAdvancedSettings().getSocketLinger(); registerChannelRequestMap = new HashMap(); int socketTrafficClass = 0; if (getBasicConfig().getAdvancedSettings().getClientSocketTrafficClass() != null) { socketTrafficClass = Integer .parseInt(getBasicConfig().getAdvancedSettings().getClientSocketTrafficClass()); } while (true) { selectCount = selector.select(500); //selectCount = selector.select();//for testing //check for any pending registerChannel req. synchronized (registerChannelRequestMap) { if (registerChannelRequestMap.size() > 0) { RegisterChannelRequest req = null; Object hashkey = null; iterator = registerChannelRequestMap.keySet().iterator(); while (iterator.hasNext()) { hashkey = iterator.next(); req = (RegisterChannelRequest) registerChannelRequestMap.get(hashkey); req.register(getSelector()); } iterator = null; registerChannelRequestMap.clear(); } //if } //sync if (stopServer == true && stopServerProcessed == false) { logger.warning("Closing " + getName()); serverSocketChannel.close(); stopServerProcessed = true; server = null; serverSocketChannel = null; setServiceState(Service.STOPPED); logger.warning("Closed " + getName()); processServerHooks(ServerHook.POST_SHUTDOWN); } if (stopServer == false && stopServerProcessed == true) { logger.finest("Server must have re-started.. will break"); break; } if (selectCount == 0 && stopServerProcessed == true) { java.util.Set keyset = selector.keys(); if (keyset.isEmpty() == true && getClientCount() <= 0) { break; } else { continue; } } else if (selectCount == 0) { continue; } iterator = selector.selectedKeys().iterator(); while (iterator.hasNext()) { key = (SelectionKey) iterator.next(); if (key.isValid() == false) { iterator.remove(); continue; } if (key.isAcceptable() && stopServer == false) { logger.finest("Key is Acceptable"); serverChannel = (ServerSocketChannel) key.channel(); socketChannel = serverChannel.accept(); if (socketChannel == null) { iterator.remove(); continue; } client = socketChannel.socket(); if (linger < 0) { client.setSoLinger(false, 0); } else { client.setSoLinger(true, linger); } client.setTcpNoDelay(getBasicConfig().getAdvancedSettings().getClientSocketTcpNoDelay()); if (getBasicConfig().getAdvancedSettings().getClientSocketTrafficClass() != null) { client.setTrafficClass(socketTrafficClass);//low delay=10 } //logger.fine("ReceiveBufferSize: "+client.getReceiveBufferSize()); if (getBasicConfig().getAdvancedSettings().getClientSocketSendBufferSize() != 0) { client.setSendBufferSize( getBasicConfig().getAdvancedSettings().getClientSocketSendBufferSize()); //logger.fine("SendBufferSize: "+client.getSendBufferSize()); } if (checkAccessConstraint(client) == false) { iterator.remove(); continue; } socketChannel.configureBlocking(false); theClient.setTrusted(getSkipValidation()); theClient.setSocket(socketChannel.socket()); theClient.setSocketChannel(socketChannel); if (clientDataClass != null) { if (getClientDataPool() == null) { clientData = (ClientData) clientDataClass.newInstance(); } else { //borrow a object from pool clientData = (ClientData) getClientDataPool().borrowObject(); } theClient.setClientData(clientData); } //Check if max connection has reached if (getSkipValidation() != true && maxConnection != -1 && getClientHandlerPool().getNumActive() >= maxConnection) { theClient.setClientEvent(ClientEvent.MAX_CON); } else { theClient.setClientEvent(ClientEvent.ACCEPT); } try { _chPolled = (ClientHandler) getClientHandlerPool().borrowObject(); logger.finest("Asking " + _chPolled.getName() + " to handle."); _chPolled.handleClient(theClient); } catch (java.util.NoSuchElementException nsee) { logger.warning("Could not borrow ClientHandler Object from pool. Error: " + nsee); logger.warning("Closing SocketChannel [" + serverChannel.socket() + "] since no ClientHandler available."); socketChannel.close(); } if (_chPolled != null) { try { getClientPool().addClient(_chPolled, true); } catch (java.util.NoSuchElementException nsee) { logger.warning("Could not borrow Thread from pool. Error: " + nsee); //logger.warning("Closing SocketChannel ["+serverChannel.socket()+"] since no Thread available."); //socketChannel.close(); //returnClientHandlerToPool(_chPolled); } _chPolled = null; } socketChannel = null; client = null; setSkipValidation(false);//reset it back } else if (key.isValid() && key.isReadable()) { boolean addedEvent = false; ClientHandler _ch = null; try { _ch = (ClientHandler) key.attachment(); logger.finest("Key is Readable, removing OP_READ from interestOps for " + _ch.getName()); key.interestOps(key.interestOps() & (~SelectionKey.OP_READ)); _ch.addEvent(ClientEvent.READ); addedEvent = true; //_ch.setSelectionKey(key); getClientPool().addClient(_ch); } catch (CancelledKeyException cke) { logger.fine("Ignored Error - Key was Cancelled: " + cke); } catch (java.util.NoSuchElementException nsee) { logger.finest("NoSuchElementException: " + nsee); if (addedEvent) _ch.removeEvent(ClientEvent.READ); continue;//no need to remove the key } _ch = null; } else if (key.isValid() && key.isWritable()) { if (getClientPool().shouldNioWriteHappen() == false) { continue; //no need to remove the key } boolean addedEvent = false; ClientHandler _ch = null; try { _ch = (ClientHandler) key.attachment(); logger.finest("Key is Writable, removing OP_WRITE from interestOps for " + _ch.getName()); //remove OP_WRITE from interest set key.interestOps(key.interestOps() & (~SelectionKey.OP_WRITE)); _ch.addEvent(ClientEvent.WRITE); addedEvent = true; //_ch.setSelectionKey(key); getClientPool().addClient(_ch); } catch (CancelledKeyException cke) { logger.fine("Ignored Error - Key was Cancelled: " + cke); } catch (java.util.NoSuchElementException nsee) { logger.finest("NoSuchElementException: " + nsee); if (addedEvent) _ch.removeEvent(ClientEvent.WRITE); continue;//no need to remove the key } _ch = null; } else if (stopServer == true && key.isAcceptable()) { //we will not accept this key setSkipValidation(false);//reset it back } else { logger.warning("Unknown key got in SelectionKey: " + key); } iterator.remove(); //Remove key Thread.yield(); } //end of iterator iterator = null; } //end of loop }
From source file:org.voltdb.regressionsuites.RegressionSuite.java
public SocketChannel getClientChannel(final boolean noTearDown) throws IOException { final List<String> listeners = m_config.getListenerAddresses(); final Random r = new Random(); final String listener = listeners.get(r.nextInt(listeners.size())); byte[] hashedPassword = ConnectionUtil.getHashedPassword(m_password); HostAndPort hNp = HostAndPort.fromString(listener); int port = Constants.DEFAULT_PORT; if (hNp.hasPort()) { port = hNp.getPort();/*w w w .j a v a 2 s . c om*/ } final SocketChannel channel = (SocketChannel) ConnectionUtil.getAuthenticatedConnection(hNp.getHostText(), m_username, hashedPassword, port, null, ClientAuthHashScheme.getByUnencodedLength(hashedPassword.length))[0]; channel.configureBlocking(true); if (!noTearDown) { synchronized (m_clientChannels) { m_clientChannels.add(channel); } } return channel; }
From source file:oz.hadoop.yarn.api.net.ApplicationContainerClientImpl.java
/** * /*from w w w . j av a 2s . c o m*/ */ @Override void init() throws IOException { SocketChannel channel = (SocketChannel) this.rootChannel; boolean connected = channel.connect(this.address); if (connected) { channel.configureBlocking(false); channel.register(this.selector, SelectionKey.OP_READ); if (logger.isInfoEnabled()) { logger.info("Connected to " + this.address); } } else { throw new IllegalStateException("Failed to connect to ClientServer at: " + this.address); } }