public static void main(String[] argv) throws Exception {
Pipe[] pipes = new Pipe[PIPES_COUNT];
Pipe pipe = Pipe.open();
Pipe.SinkChannel sink = pipe.sink();
Pipe.SourceChannel source = pipe.source();
Selector sel = Selector.open();
source.configureBlocking(false);
source.register(sel, SelectionKey.OP_READ);
for (int i = 0; i < PIPES_COUNT; i++) {
pipes[i] = Pipe.open();
Pipe.SourceChannel sc = pipes[i].source();
sc.configureBlocking(false);
sc.register(sel, SelectionKey.OP_READ);
Pipe.SinkChannel sc2 = pipes[i].sink();
sc2.configureBlocking(false);
sc2.register(sel, SelectionKey.OP_WRITE);
}
for (int i = 0; i < LOOPS; i++) {
sink.write(ByteBuffer.allocate(BUF_SIZE));
int x = sel.selectNow();
sel.selectedKeys().clear();
source.read(ByteBuffer.allocate(BUF_SIZE));
}
for (int i = 0; i < PIPES_COUNT; i++) {
pipes[i].sink().close();
pipes[i].source().close();
}
pipe.sink().close();
pipe.source().close();
sel.close();
}
public PingClient() throws IOException {
selector = Selector.open();
Connector connector = new Connector();
Printer printer = new Printer();
connector.start();
printer.start();
receiveTarget();
}
void openIO() throws java.io.IOException {
// create a new Selector for use below
selector = Selector.open();
if (settings.port() != 0) {
// allocate an unbound server socket channel
serverChannel = ServerSocketChannel.open();
// set the (host,port) into the server channel will listen to
serverChannel.socket().bind(new InetSocketAddress(settings.hostId(), settings.port()));
}
}
private void prepareNioObjects() throws IOException {
serverSocketChannel = ServerSocketChannel.open();
selector = Selector.open();
serverSocketChannel.configureBlocking(false);
serverSocketChannel.socket().setReuseAddress(true);
serverSocketChannel.bind(new InetSocketAddress(port));
serverSocketChannel.register(selector, SelectionKey.OP_ACCEPT);
}
/*
* CancelledKeyException is the failure symptom of 4729342
* NOTE: The failure is timing dependent and is not always
* seen immediately when the bug is present.
*/
public static void main(String[] args) throws Exception {
InetAddress lh = InetAddress.getLocalHost();
isa = new InetSocketAddress(lh, TEST_PORT);
selector = Selector.open();
ssc = ServerSocketChannel.open();
// Create and start a selector in a separate thread.
new Thread(
new Runnable() {
public void run() {
try {
ssc.configureBlocking(false);
ssc.socket().bind(isa);
sk = ssc.register(selector, SelectionKey.OP_ACCEPT);
selector.select();
} catch (IOException e) {
System.err.println("error in selecting thread");
e.printStackTrace();
}
}
})
.start();
// Wait for above thread to get to select() before we call close.
Thread.sleep(3000);
// Try to close. This should wakeup select.
new Thread(
new Runnable() {
public void run() {
try {
SocketChannel sc = SocketChannel.open();
sc.connect(isa);
ssc.close();
sk.cancel();
sc.close();
} catch (IOException e) {
System.err.println("error in closing thread");
System.err.println(e);
}
}
})
.start();
// Wait for select() to be awakened, which should be done by close.
Thread.sleep(3000);
selector.wakeup();
selector.close();
}
public Overlord() {
try {
selector = Selector.open();
queue = new ConcurrentLinkedQueue<Communicator>();
// open the pipe and register it with our selector
pipe = Pipe.open();
pipe.sink().configureBlocking(false);
pipe.source().configureBlocking(false);
pipe.source().register(selector, SelectionKey.OP_READ);
} catch (IOException e) {
throw new RuntimeException("select() failed");
}
}
static void test() throws Exception {
ServerSocketChannel ssc = null;
SocketChannel sc = null;
SocketChannel peer = null;
try {
ssc = ServerSocketChannel.open().bind(new InetSocketAddress(0));
// loopback connection
InetAddress lh = InetAddress.getLocalHost();
sc = SocketChannel.open(new InetSocketAddress(lh, ssc.socket().getLocalPort()));
peer = ssc.accept();
// peer sends message so that "sc" will be readable
int n = peer.write(ByteBuffer.wrap("Hello".getBytes()));
assert n > 0;
sc.configureBlocking(false);
Selector selector = Selector.open();
SelectionKey key = sc.register(selector, SelectionKey.OP_READ | SelectionKey.OP_WRITE);
boolean done = false;
int failCount = 0;
while (!done) {
int nSelected = selector.select();
if (nSelected > 0) {
if (nSelected > 1) throw new RuntimeException("More than one channel selected");
Set<SelectionKey> keys = selector.selectedKeys();
Iterator<SelectionKey> iterator = keys.iterator();
while (iterator.hasNext()) {
key = iterator.next();
iterator.remove();
if (key.isWritable()) {
failCount++;
if (failCount > 10) throw new RuntimeException("Test failed");
Thread.sleep(250);
}
if (key.isReadable()) {
done = true;
}
}
}
}
} finally {
if (peer != null) peer.close();
if (sc != null) sc.close();
if (ssc != null) ssc.close();
}
}
public static void main(String[] args) throws Exception {
SocketChannel sc = SocketChannel.open();
Selector sel = Selector.open();
if (sc.keyFor(sel) != null) throw new Exception("keyFor != null");
sc.configureBlocking(false);
SelectionKey sk = sc.register(sel, SelectionKey.OP_READ, args);
if (sc.keyFor(sel) != sk) throw new Exception("keyFor returned " + sc.keyFor(sel));
if (sk.attachment() != args) throw new Exception("attachment() returned " + sk.attachment());
Trivial t = new Trivial();
sk.attach(t);
if (sk.attachment() != t) throw new Exception("Wrong attachment");
sk.isReadable();
sk.isWritable();
sk.isConnectable();
sk.isAcceptable();
}
public static Devolucion seleccionarDevolucion(
final Cliente c, final EventList<Devolucion> devos) {
final Selector<Devolucion> selector =
new AbstractSelector<Devolucion>(
devos,
"Devoluciones",
"Lista de devoluciones pendientes",
MessageFormat.format("{0} ({1})", c.getNombre(), c.getClave())) {
@Override
protected TableFormat<Devolucion> getTableFormat() {
return CXCTableFormats.getDevolucionTF();
}
};
selector.open();
if (!selector.hasBeenCanceled()) {
return selector.getSelected();
}
return null;
}
/**
* Presenta un selector adecuado para seleccionar una {@link Venta} misma que regresa
*
* @param c
* @param notas
* @return
*/
public static Venta seleccionarVentaCredito(final Cliente c, final EventList<Venta> ventas) {
final Selector<Venta> selector =
new AbstractSelector<Venta>(
ventas,
"Lista de venas",
"Ventas a credito pendientes de pago",
MessageFormat.format("{0} ({1})", c.getNombre(), c.getClave())) {
@Override
protected TableFormat<Venta> getTableFormat() {
return CXCTableFormats.getVentasCreTF();
}
};
selector.open();
if (!selector.hasBeenCanceled()) {
return selector.getSelected();
}
return null;
}
/**
* Presenta un selector adecuado para seleccionar una {@link NotaDeCredito} misma que regresa
*
* @param c
* @param notas
* @return
*/
public static NotaDeCredito seleccionarNotaDeCredito(
final Cliente c, final EventList<NotaDeCredito> notas) {
final Selector<NotaDeCredito> selector =
new AbstractSelector<NotaDeCredito>(
notas,
"Notas de Crédito",
"Disponibles para pago",
MessageFormat.format("{0} ({1})", c.getNombre(), c.getClave())) {
@Override
protected TableFormat<NotaDeCredito> getTableFormat() {
return CXCTableFormats.getNotaDeCreditoTF();
}
};
selector.open();
if (!selector.hasBeenCanceled()) {
return selector.getSelected();
}
return null;
}
public static void startRDPServer() {
if (rdpServerStarted) return;
rdpServerStarted = true;
rdpServerThread = new Thread(rdpServer, "RDPServer");
retryThread = new Thread(new RetryThread(), "RDPRetry");
packetCallbackThread = new Thread(new PacketCallbackThread(), "RDPCallback");
if (Log.loggingNet) Log.net("static - starting rdpserver thread");
try {
selector = Selector.open();
} catch (Exception e) {
Log.exception("RDPServer caught exception opening selector", e);
System.exit(1);
}
rdpServerThread.setPriority(rdpServerThread.getPriority() + 2);
if (Log.loggingDebug)
Log.debug(
"RDPServer: starting rdpServerThread with priority " + rdpServerThread.getPriority());
rdpServerThread.start();
retryThread.start();
packetCallbackThread.start();
}
public static void main(String[] args) {
port[0] = -1;
try {
reader = new BufferedReader(new InputStreamReader(System.in));
clients = new LinkedHashMap<String, SocketChannel>();
selector = Selector.open();
List<SocketChannel> anonymousClients = new ArrayList<SocketChannel>();
serverSocket = ServerSocketChannel.open();
serverSocket.configureBlocking(false);
while (true) {
readCommand();
checkClients(anonymousClients);
}
} catch (Exception expt) {
Utils.printErrorAndExit("Error: " + expt.getMessage());
}
}
public ServerThread() throws IOException {
setName("DefaultTCPTransportMapping_" + getAddress());
buf = new byte[getMaxInboundMessageSize()];
// Selector for incoming requests
selector = Selector.open();
if (serverEnabled) {
// Create a new server socket and set to non blocking mode
ssc = ServerSocketChannel.open();
ssc.configureBlocking(false);
// Bind the server socket
InetSocketAddress isa =
new InetSocketAddress(tcpAddress.getInetAddress(), tcpAddress.getPort());
ssc.socket().bind(isa);
// Register accepts on the server socket with the selector. This
// step tells the selector that the socket wants to be put on the
// ready list when accept operations occur, so allowing multiplexed
// non-blocking I/O to take place.
ssc.register(selector, SelectionKey.OP_ACCEPT);
}
}
public void run() {
try {
mySelector = Selector.open();
bRunReactor = true;
} catch (IOException e) {
throw new RuntimeException("Could not open selector", e);
}
while (bRunReactor) {
runLoopbreaks();
if (!bRunReactor) break;
runTimers();
if (!bRunReactor) break;
removeUnboundConnections();
checkIO();
addNewConnections();
processIO();
}
close();
}
public void init() throws IOException {
this._logger = LoggerFactory.getLogger(AcquirePort.class);
selector = Selector.open();
// 通过open方法来打开一个未绑定的ServerSocketChannel实例
ServerSocketChannel server = ServerSocketChannel.open();
InetSocketAddress isa = new InetSocketAddress(_acquirePort);
// 将该ServerSocketChannel绑定到指定IP地址
server.socket().bind(isa);
// 设置ServerSocket以非阻塞方式工作
server.configureBlocking(false);
// 将server注册到指定Selector对象
server.register(selector, SelectionKey.OP_ACCEPT);
// 定义准备执行读取数据的ByteBuffer
ByteBuffer buff = ByteBuffer.allocate(1024);
while (selector.select() > 0) {
// 依次处理selector上的每个已选择的SelectionKey
Set<SelectionKey> sks = selector.selectedKeys();
Iterator keys = sks.iterator();
while (keys.hasNext()) {
SelectionKey sk = (SelectionKey) keys.next();
// 从selector上的已选择Key集中删除正在处理的SelectionKey
keys.remove();
// 如果sk对应的通道包含客户端的连接请求
if (sk.isAcceptable()) {
// 调用accept方法接受连接，产生服务器端对应的SocketChannel
SocketChannel sc = server.accept();
// 设置采用非阻塞模式
sc.configureBlocking(false);
// 将该SocketChannel也注册到selector
sc.register(selector, SelectionKey.OP_READ);
}
// 如果sk对应的通道有数据需要读取
if (sk.isReadable()) {
// 获取该SelectionKey对应的Channel，该Channel中有可读的数据
SocketChannel sc = (SocketChannel) sk.channel();
// 开始读取数据
try {
while (sc.read(buff) > 0) {
buff.flip();
this._logger.info("content" + buff);
sc.write(buff);
if (buff.hasRemaining()) {
buff.compact();
} else {
buff.clear();
}
}
// 打印从该sk对应的Channel里读取到的数据
this._logger.info("accpect content" + buff);
}
// 如果捕捉到该sk对应的Channel出现了异常，即表明该Channel
// 对应的Client出现了问题，所以从Selector中取消sk的注册
catch (IOException ex) {
// 从Selector中删除指定的SelectionKey
sk.cancel();
if (sk.channel() != null) {
sk.channel().close();
}
}
}
}
}
}
/** {@inheritDoc} */
@Override
public void initializeConnectionHandler(LDAPConnectionHandlerCfg config)
throws ConfigException, InitializationException {
if (friendlyName == null) {
friendlyName = config.dn().rdn().getAttributeValue(0).toString();
}
// Open the selector.
try {
selector = Selector.open();
} catch (Exception e) {
logger.traceException(e);
LocalizableMessage message =
ERR_LDAP_CONNHANDLER_OPEN_SELECTOR_FAILED.get(
config.dn(), stackTraceToSingleLineString(e));
throw new InitializationException(message, e);
}
// Save this configuration for future reference.
currentConfig = config;
enabled = config.isEnabled();
requestHandlerIndex = 0;
allowedClients = config.getAllowedClient();
deniedClients = config.getDeniedClient();
// Configure SSL if needed.
try {
// This call may disable the connector if wrong SSL settings
configureSSL(config);
} catch (DirectoryException e) {
logger.traceException(e);
throw new InitializationException(e.getMessageObject());
}
// Save properties that cannot be dynamically modified.
allowReuseAddress = config.isAllowTCPReuseAddress();
backlog = config.getAcceptBacklog();
listenAddresses = config.getListenAddress();
listenPort = config.getListenPort();
numRequestHandlers = getNumRequestHandlers(config.getNumRequestHandlers(), friendlyName);
// Construct a unique name for this connection handler, and put
// together the set of listeners.
listeners = new LinkedList<>();
StringBuilder nameBuffer = new StringBuilder();
nameBuffer.append(friendlyName);
for (InetAddress a : listenAddresses) {
listeners.add(new HostPort(a.getHostAddress(), listenPort));
nameBuffer.append(" ");
nameBuffer.append(a.getHostAddress());
}
nameBuffer.append(" port ");
nameBuffer.append(listenPort);
handlerName = nameBuffer.toString();
// Attempt to bind to the listen port on all configured addresses to
// verify whether the connection handler will be able to start.
LocalizableMessage errorMessage =
checkAnyListenAddressInUse(listenAddresses, listenPort, allowReuseAddress, config.dn());
if (errorMessage != null) {
logger.error(errorMessage);
throw new InitializationException(errorMessage);
}
// Create a system property to store the LDAP(S) port the server is
// listening to. This information can be displayed with jinfo.
System.setProperty(protocol + "_port", String.valueOf(listenPort));
// Create and start a connection finalizer thread for this
// connection handler.
connectionFinalizer =
Executors.newSingleThreadScheduledExecutor(
new DirectoryThread.Factory(
"LDAP Connection Finalizer for connection handler " + toString()));
connectionFinalizerActiveJobQueue = new ArrayList<>();
connectionFinalizerPendingJobQueue = new ArrayList<>();
connectionFinalizer.scheduleWithFixedDelay(
new ConnectionFinalizerRunnable(), 100, 100, TimeUnit.MILLISECONDS);
// Create and start the request handlers.
requestHandlers = new LDAPRequestHandler[numRequestHandlers];
for (int i = 0; i < numRequestHandlers; i++) {
requestHandlers[i] = new LDAPRequestHandler(this, i);
}
for (int i = 0; i < numRequestHandlers; i++) {
requestHandlers[i].start();
}
// Register the set of supported LDAP versions.
DirectoryServer.registerSupportedLDAPVersion(3, this);
if (config.isAllowLDAPV2()) {
DirectoryServer.registerSupportedLDAPVersion(2, this);
}
// Create and register monitors.
statTracker = new LDAPStatistics(handlerName + " Statistics");
DirectoryServer.registerMonitorProvider(statTracker);
connMonitor = new ClientConnectionMonitorProvider(this);
DirectoryServer.registerMonitorProvider(connMonitor);
// Register this as a change listener.
config.addLDAPChangeListener(this);
}
private void go() throws IOException {
// Create a new selector
Selector selector = Selector.open();
// Open a listener on each port, and register each one
// with the selector
for (int i = 0; i < ports.length; ++i) {
ServerSocketChannel ssc = ServerSocketChannel.open();
ssc.configureBlocking(false);
ServerSocket ss = ssc.socket();
InetSocketAddress address = new InetSocketAddress(ports[i]);
ss.bind(address);
SelectionKey key = ssc.register(selector, SelectionKey.OP_ACCEPT);
System.out.println("Going to listen on " + ports[i]);
}
while (true) {
int num = selector.select();
Set selectedKeys = selector.selectedKeys();
Iterator it = selectedKeys.iterator();
while (it.hasNext()) {
SelectionKey key = (SelectionKey) it.next();
if ((key.readyOps() & SelectionKey.OP_ACCEPT) == SelectionKey.OP_ACCEPT) {
// Accept the new connection
ServerSocketChannel ssc = (ServerSocketChannel) key.channel();
SocketChannel sc = ssc.accept();
sc.configureBlocking(false);
// Add the new connection to the selector
SelectionKey newKey = sc.register(selector, SelectionKey.OP_READ);
it.remove();
System.out.println("Got connection from " + sc);
} else if ((key.readyOps() & SelectionKey.OP_READ) == SelectionKey.OP_READ) {
// Read the data
SocketChannel sc = (SocketChannel) key.channel();
// Echo data
int bytesEchoed = 0;
while (true) {
echoBuffer.clear();
int r = sc.read(echoBuffer);
if (r <= 0) {
break;
}
echoBuffer.flip();
sc.write(echoBuffer);
bytesEchoed += r;
}
System.out.println("Echoed " + bytesEchoed + " from " + sc);
it.remove();
}
}
// System.out.println( "going to clear" );
// selectedKeys.clear();
// System.out.println( "cleared" );
}
}
Dispatcher1() throws IOException {
sel = Selector.open();
}
public ChannelRouter(ExceptionListener<IOException> exceptionListener) throws IOException {
this.exceptionListener = exceptionListener;
this.outputBuffers = new ConcurrentHashMap<SelectableChannel, ByteBuffer>();
this.outputs = new ConcurrentHashMap<SelectableChannel, SelectableChannel>();
this.selector = Selector.open();
}
Connector(Printer pr) throws IOException {
printer = pr;
sel = Selector.open();
setName("Connector");
}
