Example usage for java.net DatagramPacket getData

Introduction

In this page you can find the example usage for java.net DatagramPacket getData.

Prototype

public synchronized byte[] getData()

Source Link

Document

Returns the data buffer.

Usage

From source file:vmTools.java

private String callOvnmanager(String node, String action) {
    String result = "";
    DatagramSocket socket = null;
    int serverPort = 9999;
    DatagramPacket packet2Send;//from  w ww  .  ja  v a  2s  .  c o  m
    DatagramPacket receivedPacket;
    InetAddress theServerAddress;
    byte[] outBuffer;
    byte[] inBuffer;
    inBuffer = new byte[65536];
    outBuffer = new byte[8192];
    /*
    if (this.user == null) {
    this.user = "admin";
    }*/

    try {
        HttpSession session = RuntimeAccess.getInstance().getSession();

        String sessionUser = (String) session.getAttribute("User");
        if (sessionUser == null) {
            sessionUser = "administrator";
        }

        JSONObject joCmd = new JSONObject();
        JSONObject joAction = new JSONObject(action);
        joCmd.put("sender", sessionUser);
        joCmd.put("target", "VM");
        joCmd.put("node", node);
        joCmd.put("action", joAction);
        String output = joCmd.toString();

        socket = new DatagramSocket();
        String actionName = joAction.get("name").toString();
        /*if (actionName.equals("migrate")) {
        socket.setSoTimeout(600000);
        } else {
        socket.setSoTimeout(60000);
        }*/
        socket.setSoTimeout(60000);

        InetAddress serverInet = InetAddress.getByName("localhost");
        socket.connect(serverInet, serverPort);
        outBuffer = output.getBytes();
        packet2Send = new DatagramPacket(outBuffer, outBuffer.length, serverInet, serverPort);

        try {
            // send the data
            socket.send(packet2Send);
            receivedPacket = new DatagramPacket(inBuffer, inBuffer.length);
            socket.receive(receivedPacket);
            // the server response is...
            result = new String(receivedPacket.getData(), 0, receivedPacket.getLength());
            session.setAttribute("LastActive", System.currentTimeMillis());
        } catch (Exception excep) {
            String msg = excep.getMessage();
            //String msg = excep.toString();
            joCmd.remove("action");
            joAction.put("result", "Error:" + msg);
            joCmd.put("action", joAction);
            result = joCmd.toString();
        }
        socket.close();

    } catch (Exception e) {
        log(ERROR, "callOvnmanager", e);
        return e.toString();
    }
    return result;
}

From source file:serverTools.java

private String callOvnmanager(String node, String action) {
    String result = "";
    DatagramSocket socket = null;
    int serverPort = 9999;
    DatagramPacket packet2Send;/*from  w  w w.j a  v  a2 s  . c o  m*/
    DatagramPacket receivedPacket;
    InetAddress theServerAddress;
    byte[] outBuffer;
    byte[] inBuffer;
    //inBuffer = new byte[8192];
    //outBuffer = new byte[8192];
    inBuffer = new byte[65536];
    outBuffer = new byte[8192];

    try {
        HttpSession session = RuntimeAccess.getInstance().getSession();
        String sessionUser = (String) session.getAttribute("User");
        if (sessionUser == null) {
            sessionUser = "administrator";
        }

        JSONObject joAction = new JSONObject(action);
        JSONObject joCmd = new JSONObject();
        joCmd.put("sender", sessionUser);
        joCmd.put("target", "NODE");
        joCmd.put("node", node);
        joCmd.put("action", joAction);
        String output = joCmd.toString();

        socket = new DatagramSocket();
        // set timeout
        String actionName = joAction.get("name").toString();
        if (actionName.equals("add")) {
            socket.setSoTimeout(90000);
        } else if (actionName.equals("connect")) {
            socket.setSoTimeout(60000);
        } else {
            socket.setSoTimeout(60000);
        }
        InetAddress serverInet = InetAddress.getByName("localhost");
        socket.connect(serverInet, serverPort);
        outBuffer = output.getBytes();
        packet2Send = new DatagramPacket(outBuffer, outBuffer.length, serverInet, serverPort);
        receivedPacket = new DatagramPacket(inBuffer, inBuffer.length);

        try {
            // send the data
            socket.send(packet2Send);
            // receive reply            
            socket.receive(receivedPacket);
            // the server reply is...
            result = new String(receivedPacket.getData(), 0, receivedPacket.getLength());
            session.setAttribute("LastActive", System.currentTimeMillis());
        } catch (Exception excep) {
            String msg = excep.getMessage();
            //String msg = excep.toString();
            joCmd.remove("action");
            joAction.put("result", "Error:" + msg);
            joCmd.put("action", joAction);
            result = joCmd.toString();
        }
        socket.close();

    } catch (Exception e) {
        log(ERROR, "callOvnmanager", e);
        return e.toString();
    }
    return result;
}