Receive message from ServerSocket - Java Network

Java examples for Network:ServerSocket

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Description

Receive message from ServerSocket

Demo Code

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.net.ServerSocket;
import java.net.Socket;

public class Receiver {
  ServerSocket reciever;//from  w  ww . j  a  v  a  2s.c om
  Socket connection = null;
  ObjectOutputStream out;
  ObjectInputStream in;
  String packet, ack, data = "";
  int i = 0, sequence = 0;

  Receiver() {
  }

  public void run() {

    try {
      BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
      reciever = new ServerSocket(2005, 10);
      System.out.println("waiting for connection...");
      connection = reciever.accept();
      sequence = 0;
      System.out.println("Connection established   :");
      out = new ObjectOutputStream(connection.getOutputStream());
      out.flush();
      in = new ObjectInputStream(connection.getInputStream());
      out.writeObject("connected    .");

      do {
        try {
          packet = (String) in.readObject();

          if (Integer.valueOf(packet.substring(0, 1)) == sequence) {
            data += packet.substring(1);
            sequence = (sequence == 0) ? 1 : 0;
            System.out.println("\n\nreceiver         >" + packet);
          } else {
            System.out.println("\n\nreceiver         >" + packet + "   duplicate data");
          }
          if (i < 3) {
            out.writeObject(String.valueOf(sequence));
            i++;
          } else {
            out.writeObject(String.valueOf((sequence + 1) % 2));
            i = 0;
          }
        } catch (Exception e) {
        }
      } while (!packet.equals("end"));

      System.out.println("Data recived=" + data);
      out.writeObject("connection ended    .");
    } catch (Exception e) {
    }

    finally {
      try {
        in.close();
        out.close();
        reciever.close();
      } catch (Exception e) {
      }
    }
  }

  public static void main(String args[]) {
    Receiver s = new Receiver();
    while (true) {
      s.run();
    }
  }
}

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