AJP13 CPing

AJP13 CPing

package edu.nitin.apache.ajp;



import java.net.Socket;

import java.net.SocketException;

import java.io.InputStream;

import java.io.OutputStream;

import java.io.IOException;

import java.io.ByteArrayOutputStream;

import java.io.DataInputStream;

import java.io.DataOutputStream;



/**

 *

 * @author  Nitin Verma

 */

public class TCPClient {

    

    /** Creates a new instance of TCPClient */

    public TCPClient(String host, int port) {



        Socket socket = null;

        try {

            if(host == null) {

                host = "127.0.0.1";

            }

            if(port == 0) {

                port = 8080;

            }

            System.out.println("host:port = " + host + ":" + port);

            socket = new Socket(host, port);

            final InputStream in = socket.getInputStream();

            final DataOutputStream out = new DataOutputStream(socket.getOutputStream());

            Thread t1 = new Thread(getRunnableReader(in));

            t1.start();

            byte [] magic = {0x12, 0x34};

            byte [] data = {0x0A};

            ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();

            byteArrayOutputStream.write(data);

            int dataLenght = byteArrayOutputStream.size();

            int MAX_LENGTH = 8 * 1024 - 2 /*data length*/ - magic.length;

            if( dataLenght >= MAX_LENGTH ) {

                System.err.println("> max length [" + MAX_LENGTH + "]");

                return;

            }



            // Magic bytes

            out.write(magic);

            out.flush();

            // Data lenght

            

            out.writeShort(dataLenght);

            out.flush();

            // Data

            byteArrayOutputStream.writeTo(out);

            out.flush();

            t1.join();

        }

        catch (IOException ioe) {

            ioe.printStackTrace();

        }

        catch (Throwable th) {

            th.printStackTrace();

        }

        finally {

            System.out.println();

            try {

                socket.close();

            }

            catch (IOException ioe) {

                ioe.printStackTrace();

            }

        }

    }

    

    private Runnable getRunnableReader(final InputStream in) {

        Runnable runnable = new Runnable() {

            public void run() {

                try{

                    int rByte = 0;

                    while((rByte = in.read()) != -1){

                        System.out.print(Integer.toHexString(rByte));

                        System.out.print(" ");

                    }

                }

                catch(SocketException se){

                    se.printStackTrace();

                    return;

                }

                catch(Throwable th){

                    th.printStackTrace();

                    return;

                }

            }

        };

        return runnable;

    }

    

    /**

     * @param args the command line arguments

     */

    public static void main(String[] args) {

        String host = null;

        int port = 0;

        if(args.length >= 2) {

            host = args[0];

            port = Integer.parseInt(args[1]);

        }

        new TCPClient(host, port);

    }

    

    

}

Software Physics

Study of nature of software systems

As we know physics is study of nature. On the same lines I can say Software Physics is study of nature of software systems.

Welome to Nitin's Net

Yet to think what to start with! What about core dump ? ;-)