Example usage for java.nio.channels DatagramChannel open

List of usage examples for java.nio.channels DatagramChannel open

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Introduction

In this page you can find the example usage for java.nio.channels DatagramChannel open.

Prototype

public static DatagramChannel open() throws IOException

Source Link

Document

Opens a datagram channel.

Usage

From source file:me.xingrz.prox.udp.UdpProxySession.java

public UdpProxySession(UdpProxy udpProxy, Selector selector, int sourcePort, InetAddress remoteAddress,
        int remotePort) throws IOException {
    super(selector, sourcePort, remoteAddress, remotePort);
    this.udpProxy = udpProxy;
    this.serverChannel = DatagramChannel.open();
    this.serverChannel.configureBlocking(false);
    this.serverChannel.socket().bind(new InetSocketAddress(0));
}

From source file:org.lispmob.noroot.IPC.java

public IPC(LISPmobVPNService vpn_service) {
    this.vpn_service = vpn_service;
    notifications = new Notifications(this.vpn_service);
    try {/*www  .ja v a  2 s . c om*/
        ipc_channel = DatagramChannel.open();
        ipc_channel.socket().bind(new InetSocketAddress(ipc_addr, ipc_src_port));
        ipc_channel.connect(new InetSocketAddress(ipc_addr, ipc_dst_port));
    } catch (Exception e) {
        e.printStackTrace();
    }
    ipc_thread = new Thread(this, "IPC");
}

From source file:com.facebook.infrastructure.net.UdpConnection.java

public void init() throws IOException {
    socketChannel_ = DatagramChannel.open();
    socketChannel_.socket().setReuseAddress(true);
    socketChannel_.configureBlocking(false);
}

From source file:edu.tsinghua.lumaqq.qq.net.UDPPort.java

/**
 * /*from   w  w w .  j av a  2 s  .c  om*/
 * 
 * @param policy
 *       ?
 * @param address
 *       ??
 * @throws IOException
 *       ?
 */
public UDPPort(IConnectionPolicy policy, InetSocketAddress address) throws IOException {
    super(policy);
    channel = DatagramChannel.open();
    channel.configureBlocking(false);
    this.remoteAddress = address;
}

From source file:com.facebook.infrastructure.net.UdpConnection.java

public void init(int port) throws IOException {
    // TODO: get TCP port from config and add one.
    localEndPoint_ = new EndPoint(port);
    socketChannel_ = DatagramChannel.open();
    socketChannel_.socket().bind(localEndPoint_.getInetAddress());
    socketChannel_.socket().setReuseAddress(true);
    socketChannel_.configureBlocking(false);
    key_ = SelectorManager.getUdpSelectorManager().register(socketChannel_, this, SelectionKey.OP_READ);
}

From source file:org.apache.hama.monitor.fd.UDPSensor.java

/**
 * Constructor for UDP client. Setting up configuration and open
 * DatagramSocket.// w  w  w.jav  a2 s . c o  m
 */
public UDPSensor(HamaConfiguration configuration) {
    this.host = configuration.get("bsp.monitor.fd.udp_host", "localhost");
    this.port = configuration.getInt("bsp.monitor.fd.udp_port", 16384);
    HEARTBEAT_INTERVAL = configuration.getInt("bsp.monitor.fd.heartbeat_interval", 1000);
    DatagramChannel tmp = null;
    try {
        tmp = DatagramChannel.open();
    } catch (IOException ioe) {
        LOG.error("Unable to open datagram channel.", ioe);
    }
    this.channel = tmp;
    if (null == this.channel)
        throw new NullPointerException("Fail to open udp channel.");
    this.scheduler = Executors.newSingleThreadExecutor();
}

From source file:edu.tsinghua.lumaqq.qq.net.UDPSocks5Port.java

/**
 * //from   ww w.j  a v  a 2 s .  c  om
 * 
* @param policy
*       ?
* @param serverAddress
*       ??
* @throws IOException
*       port
 */
public UDPSocks5Port(IConnectionPolicy policy, InetSocketAddress serverAddress) throws IOException {
    super(policy);
    ready = false;
    this.remoteAddress = serverAddress;
    // UDP relaychannel
    channel = DatagramChannel.open();
    channel.configureBlocking(false);
    channel.socket().bind(new InetSocketAddress(0));
    // ?
    proxy = new Socks5Proxy(this, policy.getProxyUsername(), policy.getProxyPassword(), channel);
    proxy.setProxyAddress(policy.getProxy());
    proxy.setRemoteAddress(serverAddress);
    proxy.setClientPort(channel.socket().getLocalPort());
}

From source file:gridool.util.net.PoolableSocketChannelFactory.java

private static DatagramChannel createDatagramChannel(final SocketAddress sockAddr, final boolean blocking) {
    final DatagramChannel ch;
    try {//ww w .  ja v  a  2s.  c o  m
        ch = DatagramChannel.open();
        ch.configureBlocking(blocking);
    } catch (IOException e) {
        LOG.error("Failed to open DatagramChannel.", e);
        throw new IllegalStateException(e);
    }
    try {
        ch.socket().setBroadcast(false);
    } catch (SocketException e) {
        LOG.error("Failed to configure socket.", e);
        throw new IllegalStateException(e);
    }
    try {
        ch.connect(sockAddr);
    } catch (IOException e) {
        LOG.error("Failed to connect socket: " + sockAddr, e);
        throw new IllegalStateException(e);
    }
    return ch;
}

From source file:com.offbynull.portmapper.pcp.PcpDiscovery.java

private static Map<InetAddress, InetAddress> discoverLocalAddressesToGateways(Set<InetAddress> gateways)
        throws IOException, InterruptedException {
    Set<InetAddress> localAddresses = NetworkUtils.getAllLocalIpv4Addresses();
    List<DatagramChannel> channels = new ArrayList<>();
    final Map<DatagramChannel, InetAddress> bindMap = Collections
            .synchronizedMap(new HashMap<DatagramChannel, InetAddress>());
    final Map<InetAddress, InetAddress> localAddrToGatewayAddrMap = Collections
            .synchronizedMap(new HashMap<InetAddress, InetAddress>());

    try {/*  ww w .  j a  v a  2  s  .  co m*/
        for (InetAddress localAddress : localAddresses) {
            DatagramChannel unicastChannel = null;
            try {
                unicastChannel = DatagramChannel.open();
                unicastChannel.configureBlocking(false);
                unicastChannel.socket().bind(new InetSocketAddress(localAddress, 0));
            } catch (IOException ioe) {
                IOUtils.closeQuietly(unicastChannel);
                throw ioe;
            }

            channels.add(unicastChannel);
            bindMap.put(unicastChannel, localAddress);
        }
    } catch (IOException ioe) {
        for (DatagramChannel channel : channels) {
            IOUtils.closeQuietly(channel);
        }
        throw ioe;
    }

    UdpCommunicator communicator = null;
    try {
        communicator = new UdpCommunicator(channels);
        communicator.startAsync().awaitRunning();
        communicator.addListener(new UdpCommunicatorListener() {

            @Override
            public void incomingPacket(InetSocketAddress sourceAddress, DatagramChannel channel,
                    ByteBuffer packet) {
                // make sure version is 2 and error isn't ADDRESS_MISMATCH and we're good to go
                if (packet.remaining() < 4
                        || packet.get(0) == 2 && packet.get(4) == PcpResultCode.ADDRESS_MISMATCH.ordinal()) {
                    return;
                }

                InetAddress localAddress = bindMap.get(channel);
                if (localAddress == null) {
                    return;
                }
                localAddrToGatewayAddrMap.put(localAddress, sourceAddress.getAddress());
            }
        });

        for (DatagramChannel channel : bindMap.keySet()) {
            for (InetAddress gateway : gateways) {
                ByteBuffer outBuf = ByteBuffer.allocate(1100);
                MapPcpRequest mpr = new MapPcpRequest(ByteBuffer.allocate(12), 0, 0, 0,
                        InetAddress.getByName("::"), 0L);
                mpr.dump(outBuf, bindMap.get(channel));
                outBuf.flip();

                communicator.send(channel, new InetSocketAddress(gateway, 5351), outBuf.asReadOnlyBuffer());
            }
        }

        Thread.sleep(5000L);
    } finally {
        if (communicator != null) {
            communicator.stopAsync().awaitTerminated();
        }
    }

    return new HashMap<>(localAddrToGatewayAddrMap);
}

From source file:com.offbynull.portmapper.natpmp.NatPmpDiscovery.java

private static Map<InetAddress, InetAddress> discoverLocalAddressesToGateways(Set<InetAddress> gateways)
        throws IOException, InterruptedException {
    Set<InetAddress> localAddresses = NetworkUtils.getAllLocalIpv4Addresses();
    List<DatagramChannel> channels = new ArrayList<>();
    final Map<DatagramChannel, InetAddress> bindMap = Collections
            .synchronizedMap(new HashMap<DatagramChannel, InetAddress>());
    final Map<InetAddress, InetAddress> localAddrToGatewayAddrMap = Collections
            .synchronizedMap(new HashMap<InetAddress, InetAddress>());

    try {//from   www . j ava  2 s. com
        for (InetAddress localAddress : localAddresses) {
            DatagramChannel unicastChannel = null;
            try {
                unicastChannel = DatagramChannel.open();
                unicastChannel.configureBlocking(false);
                unicastChannel.socket().bind(new InetSocketAddress(localAddress, 0));
            } catch (IOException ioe) {
                IOUtils.closeQuietly(unicastChannel);
                throw ioe;
            }

            channels.add(unicastChannel);
            bindMap.put(unicastChannel, localAddress);
        }
    } catch (IOException ioe) {
        for (DatagramChannel channel : channels) {
            IOUtils.closeQuietly(channel);
        }
        throw ioe;
    }

    UdpCommunicator communicator = null;
    try {
        communicator = new UdpCommunicator(channels);
        communicator.startAsync().awaitRunning();
        communicator.addListener(new UdpCommunicatorListener() {

            @Override
            public void incomingPacket(InetSocketAddress sourceAddress, DatagramChannel channel,
                    ByteBuffer packet) {
                new ExternalAddressNatPmpResponse(packet); // should error out if not valid

                InetAddress localAddress = bindMap.get(channel);
                if (localAddress == null) {
                    return;
                }
                localAddrToGatewayAddrMap.put(localAddress, sourceAddress.getAddress());
            }
        });

        ByteBuffer outBuf = ByteBuffer.allocate(16);
        ExternalAddressNatPmpRequest eanpr = new ExternalAddressNatPmpRequest();
        eanpr.dump(outBuf);

        outBuf.flip();

        for (DatagramChannel channel : bindMap.keySet()) {
            for (InetAddress gateway : gateways) {
                communicator.send(channel, new InetSocketAddress(gateway, 5351), outBuf.asReadOnlyBuffer());
            }
        }

        Thread.sleep(5000L);
    } finally {
        if (communicator != null) {
            communicator.stopAsync().awaitTerminated();
        }
    }

    return new HashMap<>(localAddrToGatewayAddrMap);
}