List of usage examples for java.nio.channels DatagramChannel socket
public abstract DatagramSocket socket();
From source file:net.ymate.platform.serv.nio.datagram.NioUdpServer.java
public synchronized void start() throws IOException { if (!__isStarted) { __isStarted = true;//from w w w.j a v a2 s . c o m __eventGroup = new NioEventGroup<NioUdpListener>(__serverCfg, __listener, __codec) { @Override protected SelectableChannel __doChannelCreate(INioServerCfg cfg) throws IOException { DatagramChannel _channel = DatagramChannel.open(); _channel.configureBlocking(false); _channel.socket().bind(new InetSocketAddress(cfg.getServerHost(), cfg.getPort())); return _channel; } @Override protected String __doBuildProcessorName() { return StringUtils.capitalize(name()).concat("UdpServer-NioEventProcessor-"); } @Override protected void __doInitProcessors() throws IOException { __processors = new NioEventProcessor[__selectorCount]; for (int _idx = 0; _idx < __selectorCount; _idx++) { __processors[_idx] = new NioEventProcessor<NioUdpListener>(this, __doBuildProcessorName() + _idx) { @Override protected void __doExceptionEvent(SelectionKey key, final Throwable e) { final INioSession _session = (INioSession) key.attachment(); if (_session != null) { __eventGroup.executorService().submit(new Runnable() { public void run() { try { __eventGroup.listener().onExceptionCaught(e, _session); } catch (Throwable ex) { _LOG.error(e.getMessage(), RuntimeUtils.unwrapThrow(ex)); } } }); } else { _LOG.error(e.getMessage(), RuntimeUtils.unwrapThrow(e)); } } }; __processors[_idx].start(); } } @Override protected void __doRegisterEvent() throws IOException { for (NioEventProcessor _processor : __processors) { _processor.registerEvent(__channel, SelectionKey.OP_READ, new NioSession<NioUdpListener>(this, __channel) { @Override protected int __doChannelRead(ByteBuffer buffer) throws IOException { SocketAddress _address = ((DatagramChannel) __channel).receive(buffer); if (_address != null) { attr(SocketAddress.class.getName(), _address); return __buffer.remaining(); } return 0; } @Override protected int __doChannelWrite(ByteBuffer buffer) throws IOException { SocketAddress _address = attr(SocketAddress.class.getName()); if (_address != null) { return ((DatagramChannel) __channel).send(buffer, _address); } buffer.reset(); return 0; } }); } } }; __eventGroup.start(); // _LOG.info("UdpServer [" + __eventGroup.name() + "] started at " + __serverCfg.getServerHost() + ":" + __serverCfg.getPort()); } }
From source file:org.apache.axis2.transport.udp.IODispatcher.java
/** * Add a new endpoint. This method creates a new socket listening on * the UDP port specified in the endpoint description and makes sure * that incoming packets are routed to the specified service. * // w ww . j a v a 2s . c om * @param endpoint the endpoint description * @throws IOException if the socket could not be created or * registered with the selector */ public void addEndpoint(final Endpoint endpoint) throws IOException { final DatagramChannel channel = DatagramChannel.open(); channel.socket().bind(new InetSocketAddress(endpoint.getPort())); channel.configureBlocking(false); execute(new SelectorOperation() { @Override public void doExecute(Selector selector) throws IOException { channel.register(selector, SelectionKey.OP_READ, endpoint); } }); log.info("UDP endpoint started on port : " + endpoint.getPort()); }
From source file:org.apache.synapse.transport.udp.IODispatcher.java
/** * Add a new endpoint. This method creates a new socket listening on * the UDP port specified in the endpoint description and makes sure * that incoming packets are routed to the specified service. * //from ww w. j a v a 2 s . com * @param endpoint the endpoint description * @throws IOException if the socket could not be created or * registered with the selector */ public void addEndpoint(final Endpoint endpoint) throws IOException { final DatagramChannel channel = DatagramChannel.open(); channel.socket().bind(new InetSocketAddress(endpoint.getPort())); channel.configureBlocking(false); execute(new SelectorOperation() { @Override public void doExecute(Selector selector) throws IOException { channel.register(selector, SelectionKey.OP_READ, endpoint); } }); }
From source file:org.sipfoundry.sipxbridge.symmitron.DataShuffler.java
/** * Sit in a loop running the following algorthim till exit: * /* w ww . j av a 2 s .c o m*/ * <pre> * Let Si be a Sym belonging to Bridge B where an inbound packet P is received * Increment received packet count for B. * Record time for the received packet. * Record inboundAddress from where the packet was received * send(B,chan,inboundAddress) * * </pre> * */ public void run() { // Wait for an event one of the registered channels logger.debug("Starting Shuffler"); while (true) { Bridge bridge = null; try { if (initializeSelectors.get()) { initializeSelector(); } selector.select(); while (!workQueue.isEmpty()) { logger.debug("Got a work item"); WorkItem workItem = (WorkItem) workQueue.remove(0); workItem.doWork(); } // Iterate over the set of keys for which events are // available Iterator<SelectionKey> selectedKeys = selector.selectedKeys().iterator(); while (selectedKeys.hasNext()) { SelectionKey key = (SelectionKey) selectedKeys.next(); // The key must be removed or you can get one way audio ( i.e. will read a // null byte ). // (see issue 2075 ). selectedKeys.remove(); if (!key.isValid()) { if (logger.isDebugEnabled()) { logger.debug("Discarding packet:Key not valid"); } continue; } if (key.isReadable()) { readBuffer.clear(); DatagramChannel datagramChannel = (DatagramChannel) key.channel(); if (!datagramChannel.isOpen()) { if (logger.isDebugEnabled()) { logger.debug("DataShuffler: Datagram channel is closed -- discarding packet."); } continue; } bridge = ConcurrentSet.getBridge(datagramChannel); if (bridge == null) { if (logger.isDebugEnabled()) { logger.debug("DataShuffler: Discarding packet: Could not find bridge"); } continue; } Sym packetReceivedSym = bridge.getReceiverSym(datagramChannel); /* * Note the original hold value and put the transmitter on which this packet was received on hold. */ if (packetReceivedSym == null || packetReceivedSym.getTransmitter() == null) { if (logger.isDebugEnabled()) { logger.debug( "DataShuffler: Could not find sym for inbound channel -- discarding packet"); } continue; } boolean holdValue = packetReceivedSym.getTransmitter().isOnHold(); packetReceivedSym.getTransmitter().setOnHold(true); InetSocketAddress remoteAddress = (InetSocketAddress) datagramChannel.receive(readBuffer); bridge.pakcetsReceived++; if (bridge.getState() != BridgeState.RUNNING) { if (logger.isDebugEnabled()) { logger.debug( "DataShuffler: Discarding packet: Bridge state is " + bridge.getState()); } packetReceivedSym.getTransmitter().setOnHold(holdValue); continue; } if (logger.isTraceEnabled()) { logger.trace("got something on " + datagramChannel.socket().getLocalPort()); } long stamp = getPacketCounter(); send(bridge, datagramChannel, remoteAddress, stamp, false); /* * Reset the old value. */ packetReceivedSym.getTransmitter().setOnHold(holdValue); } } } catch (Exception ex) { logger.error("Unexpected exception occured", ex); if (bridge != null && bridge.sessions != null) { for (Sym rtpSession : bridge.sessions) { rtpSession.close(); } } if (bridge != null) bridge.setState(BridgeState.TERMINATED); continue; } } }
From source file:org.sipfoundry.sipxbridge.symmitron.DataShuffler.java
/** * //from w w w.j a va 2 s. co m * Implements the following search algorithm to retrieve a datagram channel that is associated * with the far end: * * <pre> * getSelfRoutedDatagramChannel(farEnd) * For each selectable key do: * let ipAddress be the local ip address * let p be the local port * let d be the datagramChannel associated with the key * If farEnd.ipAddress == ipAddress && port == localPort return d * return null * </pre> * * @param farEnd * @return */ public static DatagramChannel getSelfRoutedDatagramChannel(InetSocketAddress farEnd) { // Iterate over the set of keys for which events are // available InetAddress ipAddress = farEnd.getAddress(); int port = farEnd.getPort(); for (Iterator<SelectionKey> selectedKeys = selector.keys().iterator(); selectedKeys.hasNext();) { SelectionKey key = selectedKeys.next(); if (!key.isValid()) { continue; } DatagramChannel datagramChannel = (DatagramChannel) key.channel(); if (datagramChannel.socket().getLocalAddress().equals(ipAddress) && datagramChannel.socket().getLocalPort() == port) { return datagramChannel; } } return null; }
From source file:org.sipfoundry.sipxrelay.DataShuffler.java
/** * Sit in a loop running the following algorthim till exit: * /*from ww w. j ava 2 s .co m*/ * <pre> * Let Si be a Sym belonging to Bridge B where an inbound packet P is received * Increment received packet count for B. * Record time for the received packet. * Record inboundAddress from where the packet was received * send(B,chan,inboundAddress) * * </pre> * */ public void run() { // Wait for an event one of the registered channels logger.debug("Starting Shuffler"); while (true) { Bridge bridge = null; try { if (initializeSelectors.get()) { initializeSelector(); } selector.select(); checkWorkQueue(); // Iterate over the set of keys for which events are // available Iterator<SelectionKey> selectedKeys = selector.selectedKeys().iterator(); while (selectedKeys.hasNext()) { SelectionKey key = (SelectionKey) selectedKeys.next(); // The key must be removed or you can get one way audio ( i.e. will read a // null byte ). // (see issue 2075 ). selectedKeys.remove(); if (!key.isValid()) { if (logger.isDebugEnabled()) { logger.debug("Discarding packet:Key not valid"); } continue; } if (key.isReadable()) { readBuffer.clear(); DatagramChannel datagramChannel = (DatagramChannel) key.channel(); if (!datagramChannel.isOpen()) { if (logger.isDebugEnabled()) { logger.debug("DataShuffler: Datagram channel is closed -- discarding packet."); } continue; } bridge = ConcurrentSet.getBridge(datagramChannel); if (bridge == null) { if (logger.isDebugEnabled()) { logger.debug("DataShuffler: Discarding packet: Could not find bridge"); } continue; } Sym packetReceivedSym = bridge.getReceiverSym(datagramChannel); /* * Note the original hold value and put the transmitter on which this packet was received on hold. */ if (packetReceivedSym == null || packetReceivedSym.getTransmitter() == null) { if (logger.isDebugEnabled()) { logger.debug( "DataShuffler: Could not find sym for inbound channel -- discarding packet"); } continue; } boolean holdValue = packetReceivedSym.getTransmitter().isOnHold(); packetReceivedSym.getTransmitter().setOnHold(true); InetSocketAddress remoteAddress = (InetSocketAddress) datagramChannel.receive(readBuffer); bridge.pakcetsReceived++; if (bridge.getState() != BridgeState.RUNNING) { if (logger.isDebugEnabled()) { logger.debug( "DataShuffler: Discarding packet: Bridge state is " + bridge.getState()); } packetReceivedSym.getTransmitter().setOnHold(holdValue); continue; } if (logger.isTraceEnabled()) { logger.trace("got something on " + datagramChannel.socket().getLocalPort()); } long stamp = getPacketCounter(); send(bridge, datagramChannel, remoteAddress, stamp, false); /* * Reset the old value. */ packetReceivedSym.getTransmitter().setOnHold(holdValue); } } } catch (Exception ex) { logger.error("Unexpected exception occured", ex); if (bridge != null && bridge.sessions != null) { for (Sym rtpSession : bridge.sessions) { rtpSession.close(); } } if (bridge != null) bridge.setState(BridgeState.TERMINATED); continue; } } }