LAB 4 - SOCKET : CLIENT TO SERVER - 05-11-17

CLIENT TO SERVER

• InputStream − The InputStream is used to read data from a source.
• OutputStream − The OutputStream is used for writing data to a destination.
  
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MyClient.java

// importing java packages

import java.io.*;

import java.net.*;

public class MyClient {

  public static void main(String args[]) {

try 

{

// create a new socket for communicating with the server

         Socket skt = new Socket("127.0.0.1", 6999);

         System.out.println("Connected to server");

// declaring a message

         String msg = "Hello Server";

//creating output stream for socket(skt)

         OutputStream os = skt.getOutputStream();

//creating object for output stream

         ObjectOutputStream oos = new ObjectOutputStream(os);

// send a message to server using writeobject

         oos.writeObject(msg);

         System.out.println("Sent a message to server");

// close object output stream

         oos.close();

// close output stream

         os.close();

// close socket

         skt.close();

} 

catch(Exception e) 

{

         System.out.println(e);

}

} 

}

MyServer.java

//import packages

import java.io.*;

import java.net.*;

public class MyServer {

    public static void main(String[] args) {

         try {

// Create a new server socket that listens at port 6999

         ServerSocket ss = new ServerSocket(6999);

         System.out.println("Server is lisenting ... ");

//wait for connection from client on port 6999

         Socket skt = ss.accept();

//InputStream for getting input from client

         InputStream is = skt.getInputStream();

//declare Object for InputStream

         ObjectInputStream ois = new ObjectInputStream(is);

// recieve message from client       

         String msg = (String)ois.readObject(); 

// display the output

         System.out.println("Server recieved message : " + msg);

         System.out.println("Server is exiting ... ");

/* close open streams and socket */

         ois.close();

         is.close();

         skt.close();

         ss.close();

} 

catch(Exception e) 

{

         System.out.println(e);

}

}

}

NOTE: 
1. First run MyServer.java
2. Second run MyClient.java

SOURCE CODE:
1. CLIENT
2. SERVER

OUTPUT

MyServer.java

 MyClient.java