Exp 13

********Exp No. 13**********

*******Server Program*******

import java.net.*;

import java.io.*;

public class Server {

    //initialize socket and input stream

    private Socket          socket   = null;

    private ServerSocket    server   = null;

    private DataInputStream in       =  null;

 

    // constructor with port

    public Server(int port)

    {

        // starts server and waits for a connection

        try

        {

            server = new ServerSocket(port);

            System.out.println("Server started");

 

            System.out.println("Waiting for a client ...");

 

            socket = server.accept();

            System.out.println("Client accepted");

 

            // takes input from the client socket

            in = new DataInputStream(

                new BufferedInputStream(socket.getInputStream()));

 

            String line = "";

 

            // reads message from client until "Over" is sent

            while (!line.equals("Over"))

            {

                try

                {

                    line = in.readUTF();

                    System.out.println(line);

 

                }

                catch(IOException i)

                {

                    System.out.println(i);

                }

            }

            System.out.println("Closing connection");

 

            // close connection

            socket.close();

            in.close();

        }

        catch(IOException i)

        {

            System.out.println(i);

        }

    }

 

    public static void main(String args[])

    {

        Server server = new Server(5000);

    }

   

}

*******Client Program*******

// A Java program for a Client

import java.net.*;

import java.io.*;

public class Client {

    // initialize socket and input output streams

    private Socket socket            = null;

    private DataInputStream  input   = null;

    private DataOutputStream out     = null;

 

    // constructor to put ip address and port

    public Client(String address, int port)

    {

        // establish a connection

        try

        {

            socket = new Socket(address, port);

            System.out.println("Connected");

 

            // takes input from terminal

            input  = new DataInputStream(System.in);

 

            // sends output to the socket

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

        }

        catch(UnknownHostException u)

        {

            System.out.println(u);

        }

        catch(IOException i)

        {

            System.out.println(i);

        }

 

        // string to read message from input

        String line = "";

 

        // keep reading until "Over" is input

        while (!line.equals("Over"))

        {

            try

            {

                line = input.readLine();

                out.writeUTF(line);

            }

            catch(IOException i)

            {

                System.out.println(i);

            }

        }

 

        // close the connection

        try

        {

            input.close();

            out.close();

            socket.close();

        }

        catch(IOException i)

        {

            System.out.println(i);

        }

    }

 

    public static void main(String args[])

    {

        Client client = new Client("127.0.0.1", 5000);

    }

}

*********Output************

Server started

Waiting for a client ...

Client accepted

hello Server