Java Code Examples for java.net.datagramsocket#bind()

public synchronized boolean start(Integer timeout) throws IOException {
  if (mThread == null) {
    // create a DatagramSocket without binding to any address
    mDatagramSocket = new DatagramSocket(null);
    mDatagramSocket.setReuseAddress(true);
    // bind to any free port
    mDatagramSocket.bind(null);
    if (timeout != null && timeout > 0) {
      mDatagramSocket.setSoTimeout(timeout);
    }
    mThread = new Thread(this);
    mThread.start();
    return true;
  }
  return false;
}
 

public Network(InetSocketAddress addr) throws IOException {
	this.addr = addr;
	ds = new DatagramSocket(null);
	ds.setReuseAddress(true);
	ds.bind(new InetSocketAddress((InetAddress) null, addr.getPort()));
	Thread t = new Thread(new Runnable() {
		@Override
		public void run() {
			try {
				while (true) {
					byte[] buf = new byte[576];
					DatagramPacket dp = new DatagramPacket(buf, buf.length);
					ds.receive(dp);
					if (dp.getLength() % 32 == 0)
						netQueue.put(dp);
				}
			} catch (Exception ex) {
				throw new RuntimeException(ex);
			}
		}
	});
	t.setDaemon(true);
	t.start();
}
 

@Override
protected Void doInBackground(Void... params)
{
    Logging.info(this, "started, network=" + connectionState.isNetwork()
            + ", wifi=" + connectionState.isWifi());

    final Character[] models = new Character[]{ 'x', 'p' };
    int modelId = 0;

    try
    {
        final InetAddress target = InetAddress.getByName("255.255.255.255");

        final DatagramSocket socket = new DatagramSocket(null);
        socket.setReuseAddress(true);
        socket.setBroadcast(true);
        socket.setSoTimeout(500);
        socket.bind(new InetSocketAddress(ISCP_PORT));

        while (!isStopped())
        {
            request(socket, target, models[modelId]);
            modelId++;
            if (modelId > 1)
            {
                modelId = 0;
            }
        }
        socket.close();
    }
    catch (Exception e)
    {
        Logging.info(this, "Can not open socket: " + e.toString());
    }

    Logging.info(this, "stopped");
    return null;
}
 

private void bindSocket(DatagramSocket socket, InetSocketAddress bindAddress) {
    try {
        logger.info("DatagramSocket.bind() {}/{}", bindAddress.getHostString(), bindAddress.getPort());
        socket.bind(bindAddress);
    } catch (SocketException ex) {
        throw new IllegalStateException("Socket bind Fail. port:" + bindAddress.getPort() + " Caused:" + ex.getMessage(), ex);
    }
}
 

public synchronized <T extends SelectableChannel> ChannelAction<T> registerAction(int port, ConnectionType type, ChannelListener<T> listener, int ops) throws IOException
{
  boolean startProc = (channels.size() == 0);
  SelectableChannel channel = null;
  SocketAddress address = new InetSocketAddress(port);
  ConnectionInfo connectionInfo = new ConnectionInfo();
  connectionInfo.address =  address;
  connectionInfo.connectionType = type;
  ChannelConfiguration channelConfiguration = channels.get(connectionInfo);
  if (channelConfiguration == null) {
    Object socket = null;
    if (type == ConnectionType.TCP) {
      SocketChannel schannel = SocketChannel.open();
      schannel.configureBlocking(false);
      Socket ssocket = schannel.socket();
      ssocket.bind(address);
      socket = ssocket;
      channel = schannel;
    } else if (type == ConnectionType.UDP) {
      DatagramChannel dchannel = DatagramChannel.open();
      dchannel.configureBlocking(false);
      DatagramSocket dsocket = dchannel.socket();
      dsocket.bind(address);
      socket = dsocket;
      channel = dchannel;
    }
    if (channel == null) {
      throw new IOException("Unsupported connection type");
    }
    channelConfiguration = new ChannelConfiguration();
    channelConfiguration.actions = new ConcurrentLinkedQueue<ChannelAction>();
    channelConfiguration.channel = channel;
    channelConfiguration.connectionInfo = connectionInfo;
    channels.put(connectionInfo, channelConfiguration);
    channelConfigurations.put(channel, channelConfiguration);
  } else {
    channel = channelConfiguration.channel;
  }
  ChannelAction channelAction = new ChannelAction();
  channelAction.channelConfiguration = channelConfiguration;
  channelAction.listener = listener;
  channelAction.ops = ops;
  channelConfiguration.actions.add(channelAction);
  if (startProc) {
    startProcess();
  }
  if (listener != null) {
    channel.register(selector, ops);
  }
  return channelAction;
}
 

@Override
public void InitNetwork() {
    //struct hostent* hostentry;  // host information entry

    doomcom = new doomcom_t();
    //netbuffer = new doomdata_t();
    DOOM.setDoomCom(doomcom);
    //DM.netbuffer = netbuffer;

    // set up for network
    if (!DOOM.cVarManager.with(CommandVariable.DUP, 0, (Character c) -> {
        doomcom.ticdup = (short) (c - '0');
        if (doomcom.ticdup < 1) {
            doomcom.ticdup = 1;
        }
        if (doomcom.ticdup > 9) {
            doomcom.ticdup = 9;
        }
    })) {
        doomcom.ticdup = 1;
    }

    if (DOOM.cVarManager.bool(CommandVariable.EXTRATIC)) {
        doomcom.extratics = 1;
    } else {
        doomcom.extratics = 0;
    }

    DOOM.cVarManager.with(CommandVariable.PORT, 0, (Integer port) -> {
        DOOMPORT = port;
        System.out.println("using alternate port " + DOOMPORT);
    });

    // parse network game options,
    //  -net <consoleplayer> <host> <host> ...
    if (!DOOM.cVarManager.present(CommandVariable.NET)) {
        // single player game
        DOOM.netgame = false;
        doomcom.id = DOOMCOM_ID;
        doomcom.numplayers = doomcom.numnodes = 1;
        doomcom.deathmatch = 0; // false
        doomcom.consoleplayer = 0;
        return;
    }

    DOOM.netgame = true;

    // parse player number and host list
    doomcom.consoleplayer = (short) (DOOM.cVarManager.get(CommandVariable.NET, Character.class, 0).get() - '1');

    RECVPORT = SENDPORT = DOOMPORT;
    if (doomcom.consoleplayer == 0) {
        SENDPORT++;
    } else {
        RECVPORT++;
    }

    doomcom.numnodes = 1;  // this node for sure

    String[] hosts = DOOM.cVarManager.get(CommandVariable.NET, String[].class, 1).get();
    for (String host: hosts) {
        try {
            InetAddress addr = InetAddress.getByName(host);
            DatagramSocket ds = new DatagramSocket(null);
            ds.setReuseAddress(true);
            ds.connect(addr, SENDPORT);

            sendaddress[doomcom.numnodes] = ds;
        } catch (SocketException | UnknownHostException e) {
            e.printStackTrace();
        }

        doomcom.numnodes++;
    }

    doomcom.id = DOOMCOM_ID;
    doomcom.numplayers = doomcom.numnodes;

    // build message to receive
    try {
        insocket = new DatagramSocket(null);
        insocket.setReuseAddress(true);
        insocket.setSoTimeout(1);
        insocket.bind(new InetSocketAddress(RECVPORT));
    } catch (SocketException e1) {
        // TODO Auto-generated catch block
        e1.printStackTrace();
    }
}
 

public BroadcastingEchoServer() throws IOException {
    socket = new DatagramSocket(null);
    socket.setReuseAddress(true);
    socket.bind(new InetSocketAddress(4445));
}