Example usage for java.io DataOutputStream DataOutputStream

Introduction

In this page you can find the example usage for java.io DataOutputStream DataOutputStream.

Prototype

public DataOutputStream(OutputStream out) 

Source Link

Document

Creates a new data output stream to write data to the specified underlying output stream.

Usage

From source file:dualcontrol.CryptoClientDemo.java

private void call(Properties properties, MockableConsole console, String hostAddress, int port, byte[] data)
        throws Exception {
    Socket socket = SSLContexts.create(false, "cryptoclient.ssl", properties, console).getSocketFactory()
            .createSocket(hostAddress, port);
    DataOutputStream dos = new DataOutputStream(socket.getOutputStream());
    dos.writeShort(data.length);//from   ww w  .j  a v a2 s. com
    dos.write(data);
    dos.flush();
    DataInputStream dis = new DataInputStream(socket.getInputStream());
    byte[] ivBytes = new byte[dis.readShort()];
    dis.readFully(ivBytes);
    byte[] bytes = new byte[dis.readShort()];
    dis.readFully(bytes);
    if (new String(data).contains("DECRYPT")) {
        System.err.printf("INFO CryptoClientDemo decrypted %s\n", new String(bytes));
    } else {
        System.out.printf("%s:%s\n", Base64.encodeBase64String(ivBytes), Base64.encodeBase64String(bytes));
    }
    socket.close();
}

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From source file:com.linkedin.pinot.perf.ForwardIndexWriterBenchmark.java

public static void convertRawToForwardIndex(File rawFile) throws Exception {
    List<String> lines = IOUtils.readLines(new FileReader(rawFile));
    int totalDocs = lines.size();
    int max = Integer.MIN_VALUE;
    int maxNumberOfMultiValues = Integer.MIN_VALUE;
    int totalNumValues = 0;
    int data[][] = new int[totalDocs][];
    for (int i = 0; i < lines.size(); i++) {
        String line = lines.get(i);
        String[] split = line.split(",");
        totalNumValues = totalNumValues + split.length;
        if (split.length > maxNumberOfMultiValues) {
            maxNumberOfMultiValues = split.length;
        }//from  w w  w .jav  a  2s .c o m
        data[i] = new int[split.length];
        for (int j = 0; j < split.length; j++) {
            String token = split[j];
            int val = Integer.parseInt(token);
            data[i][j] = val;
            if (val > max) {
                max = val;
            }
        }
    }
    int maxBitsNeeded = (int) Math.ceil(Math.log(max) / Math.log(2));
    int size = 2048;
    int[] offsets = new int[size];
    int bitMapSize = 0;
    File outputFile = new File("output.mv.fwd");

    FixedBitMultiValueWriter fixedBitSkipListSCMVWriter = new FixedBitMultiValueWriter(outputFile, totalDocs,
            totalNumValues, maxBitsNeeded);

    for (int i = 0; i < totalDocs; i++) {
        fixedBitSkipListSCMVWriter.setIntArray(i, data[i]);
        if (i % size == size - 1) {
            MutableRoaringBitmap rr1 = MutableRoaringBitmap.bitmapOf(offsets);
            ByteArrayOutputStream bos = new ByteArrayOutputStream();
            DataOutputStream dos = new DataOutputStream(bos);
            rr1.serialize(dos);
            dos.close();
            // System.out.println("Chunk " + i / size + " bitmap size:" + bos.size());
            bitMapSize += bos.size();
        } else if (i == totalDocs - 1) {
            MutableRoaringBitmap rr1 = MutableRoaringBitmap.bitmapOf(Arrays.copyOf(offsets, i % size));
            ByteArrayOutputStream bos = new ByteArrayOutputStream();
            DataOutputStream dos = new DataOutputStream(bos);
            rr1.serialize(dos);
            dos.close();
            // System.out.println("Chunk " + i / size + " bitmap size:" + bos.size());
            bitMapSize += bos.size();
        }
    }
    fixedBitSkipListSCMVWriter.close();
    System.out.println("Output file size:" + outputFile.length());
    System.out.println("totalNumberOfDoc\t\t\t:" + totalDocs);
    System.out.println("totalNumberOfValues\t\t\t:" + totalNumValues);
    System.out.println("chunk size\t\t\t\t:" + size);
    System.out.println("Num chunks\t\t\t\t:" + totalDocs / size);
    int numChunks = totalDocs / size + 1;
    int totalBits = (totalNumValues * maxBitsNeeded);
    int dataSizeinBytes = (totalBits + 7) / 8;

    System.out.println("Raw data size with fixed bit encoding\t:" + dataSizeinBytes);
    System.out.println("\nPer encoding size");
    System.out.println();
    System.out.println("size (offset + length)\t\t\t:" + ((totalDocs * (4 + 4)) + dataSizeinBytes));
    System.out.println();
    System.out.println("size (offset only)\t\t\t:" + ((totalDocs * (4)) + dataSizeinBytes));
    System.out.println();
    System.out.println("bitMapSize\t\t\t\t:" + bitMapSize);
    System.out.println("size (with bitmap)\t\t\t:" + (bitMapSize + (numChunks * 4) + dataSizeinBytes));

    System.out.println();
    System.out.println("Custom Bitset\t\t\t\t:" + (totalNumValues + 7) / 8);
    System.out.println("size (with custom bitset)\t\t\t:"
            + (((totalNumValues + 7) / 8) + (numChunks * 4) + dataSizeinBytes));
}

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From source file:com.meetingninja.csse.database.BaseDatabaseAdapter.java

protected static int sendPostPayload(URLConnection connection, String payload) throws IOException {
    Log.d(IRequest.POST, "[URL] " + connection.getURL().toString());
    logPrint(payload);//from  w w w .j av  a2  s  . c o  m

    DataOutputStream wr = new DataOutputStream(connection.getOutputStream());
    wr.writeBytes(payload);
    wr.flush();
    wr.close();
    return ((HttpURLConnection) connection).getResponseCode();
}

---

From source file:cit360.sandbox.BackEndMenu.java

public static final void smtpExample() {
    // declaration section:
    // smtpClient: our client socket
    // os: output stream
    // is: input stream
    Socket smtpSocket = null;// w  ww  . j  a  va 2 s  .c o m
    DataOutputStream os = null;
    DataInputStream is = null;
    // Initialization section:
    // Try to open a socket on port 25
    // Try to open input and output streams
    try {
        smtpSocket = new Socket("localhost", 25);
        os = new DataOutputStream(smtpSocket.getOutputStream());
        is = new DataInputStream(smtpSocket.getInputStream());
    } catch (UnknownHostException e) {
        System.err.println("Did not recognize server: localhost");
    } catch (IOException e) {
        System.err.println("Was not able to open I/O connection to: localhost");
    }
    // If everything has been initialized then we want to write some data
    // to the socket we have opened a connection to on port 25
    if (smtpSocket != null && os != null && is != null) {
        try {

            os.writeBytes("HELO\n");
            os.writeBytes("MAIL From: david.banks0889@gmail.com\n");
            os.writeBytes("RCPT To: david.banks0889@gmail.com\n");
            os.writeBytes("DATA\n");
            os.writeBytes("From: david.banks0889@gmail.com\n");
            os.writeBytes("Subject: TEST\n");
            os.writeBytes("Hi there\n"); // message body
            os.writeBytes("\n.\n");
            os.writeBytes("QUIT");
            // keep on reading from/to the socket till we receive the "Ok" from SMTP,
            // once we received that then we want to break.
            String responseLine;
            while ((responseLine = is.readLine()) != null) {
                System.out.println("Server: " + responseLine);
                if (responseLine.contains("Ok")) {
                    break;
                }
            }
            // clean up:
            // close the output stream
            // close the input stream
            // close the socket
            os.close();
            is.close();
            smtpSocket.close();
        } catch (UnknownHostException e) {
            System.err.println("Trying to connect to unknown host: " + e);
        } catch (IOException e) {
            System.err.println("IOException:  " + e);
        }
    }
}

---

From source file:com.dbay.apns4j.tools.ApnsTools.java

@Deprecated
public final static byte[] generateData(int id, int expire, byte[] token, byte[] payload) {
    ByteArrayOutputStream bos = new ByteArrayOutputStream();
    DataOutputStream os = new DataOutputStream(bos);
    try {//w w  w .ja  v  a2  s  .co  m
        os.writeByte(Command.SEND);
        os.writeInt(id);
        os.writeInt(expire);
        os.writeShort(token.length);
        os.write(token);
        os.writeShort(payload.length);
        os.write(payload);
        os.flush();
        return bos.toByteArray();
    } catch (IOException e) {
        e.printStackTrace();
    }
    throw new RuntimeException();
}

---

From source file:LCModels.MessageTransmitter.java

@Override
public void run() {
    try {//from www .  j  a v  a2s. co m
        // Socket connects to the ServerSocket, ServerSocket receives a Socket, what? haha//
        //send data as points
        //            Socket s = new Socket(hostname,targetPort);
        //            Socket z = new Socket(hostname, 48500, InetAddress.getByName("127.0.0.1"), targetPort);
        Socket client = new Socket(hostname, targetPort);
        /* Get server's OutputStream */
        OutputStream outToServer = client.getOutputStream();
        /* Get server's DataOutputStream to write/send message */
        DataOutputStream out = new DataOutputStream(outToServer);
        /* Write message to DataOutputStream */
        out.writeUTF(transmitJSON.toString());
        /* Get InputStream to get message from server */
        InputStream inFromServer = client.getInputStream();
        /* Get DataInputStream to read message of server */
        DataInputStream in = new DataInputStream(inFromServer);
        /* Print message received from server */
        System.out.println("Server says..." + in.readUTF());
        client.close();
    } catch (IOException ex) {
        Logger.getLogger(MessageTransmitter.class.getName()).log(Level.SEVERE, null, ex);
    }
}

---

From source file:MainFrame.CheckConnection.java

private boolean isOnline() throws MalformedURLException, IOException, Exception {
    String url = "http://www.itstepdeskview.hol.es";
    URL obj = new URL(url);
    HttpURLConnection con = (HttpURLConnection) obj.openConnection();

    //add reuqest header
    con.setRequestMethod("POST");
    con.setRequestProperty("User-Agent", "Mozilla/5.0");
    con.setRequestProperty("Accept-Language", "en-US,en;q=0.5");

    String urlParameters = "apideskviewer.checkStatus={}";

    // Send post request
    con.setDoOutput(true);/*from w  w w  . j a va  2s.  c om*/
    DataOutputStream wr = new DataOutputStream(con.getOutputStream());
    wr.writeBytes(urlParameters);
    wr.flush();
    wr.close();

    int responseCode = con.getResponseCode();
    //        System.out.println("\nSending 'POST' request to URL : " + url);
    //        System.out.println("Post parameters : " + urlParameters);
    //        System.out.println("Response Code : " + responseCode);

    BufferedReader in = new BufferedReader(new InputStreamReader(con.getInputStream()));

    JSONParser parser = new JSONParser();
    Object parsedResponse = parser.parse(in);

    JSONObject jsonParsedResponse = (JSONObject) parsedResponse;

    String s = (String) jsonParsedResponse.get("response");
    if (s.equals("online")) {
        return true;
    } else {
        return false;
    }
}

---

From source file:buildhappy.tools.DownloadFile.java

/**
 * ?filepath???/*from  ww  w.  ja v  a2 s .  c  o m*/
 */
private void saveToLocal(byte[] data, String filePath) {
    FileOutputStream fileOut = null;
    DataOutputStream dataOut = null;
    try {
        fileOut = new FileOutputStream(new File(filePath));
        dataOut = new DataOutputStream(fileOut);
        for (int i = 0; i < data.length; i++) {
            dataOut.write(data[i]);
        }
        dataOut.flush();
    } catch (IOException e) {
        e.printStackTrace();
    } finally {
        if (dataOut != null) {
            try {
                dataOut.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
}

---

From source file:edu.mit.ll.graphulo.util.SerializationUtil.java

public static void serializeWritable(Writable obj, OutputStream outputStream) {
    Preconditions.checkNotNull(obj);//  w  w  w . j  av  a 2 s.  co  m
    Preconditions.checkNotNull(outputStream);
    try (DataOutputStream out = new DataOutputStream(outputStream)) {
        obj.write(out);
    } catch (IOException ex) {
        throw new RuntimeException(ex);
    }
}

---

From source file:backtype.storm.utils.ShellProcess.java

public Number launch(Map conf, TopologyContext context) throws IOException {
    ProcessBuilder builder = new ProcessBuilder(command);
    builder.directory(new File(context.getCodeDir()));
    _subprocess = builder.start();/*from   ww  w . j a  v a 2  s. c o m*/

    processIn = new DataOutputStream(_subprocess.getOutputStream());
    processOut = new BufferedReader(new InputStreamReader(_subprocess.getInputStream()));
    processErrorStream = _subprocess.getErrorStream();

    JSONObject setupInfo = new JSONObject();
    setupInfo.put("pidDir", context.getPIDDir());
    setupInfo.put("conf", conf);
    setupInfo.put("context", context);
    writeMessage(setupInfo);

    return (Number) readMessage().get("pid");
}

---

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