Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Programming Language Expert

TCP-based Distributed Applications

1. Change this program so that each client will now send ten integers and receives their sum from the server. In Java, for loops can be easily implemented as follows: for (int i = 0 ; i < 10; i++).

2. Change your program now as follows: the client sends a request containing the message "add 10 20" to the server. This server runs the method specified by the client, i.e., "add" using the given parameters, and sends back the result to the client. In addition, the server sends the client's request along with the client's IP address and port number to a backup server. The methods that the user can specify are: add (+), sub (-), mul (*), and div (/). The backup server stores all the received operations in a backup database (in our case it will be a simple array). Note that your program must allow many clients at the same time.

import java.net.*; import java.io.*;
public class TCPClient {
public static void main (String args[]) { // arguments supply message and hostname
     Socket s = null;
     try{
           int serverPort = 7896;
           s = new Socket(args[1], serverPort);   
           DataInputStream in = new DataInputStream( s.getInputStream());
           DataOutputStream out =new DataOutputStream( s.getOutputStream());
           out.prepareUTF(args[0]);          // UTF is a string encoding see Sn. 4.4
           String data = in.readUTF();    // read a line of data from the stream
           System.out.println("Received: "+ data) ;
      }catch (UnknownHostException e) {System.out.println("Socket:"+e.getMessage());
      }catch (EOFException e){System.out.println("EOF:"+e.getMessage());
      }catch (IOException e){System.out.println("readline:"+e.getMessage());
      }finally {if(s!=null) try {s.close();
          }catch (IOException e) {System.out.println ("close:" + e.getMessage());}}}}

    import java.net.*;
import java.io.*;
public class TCPServer {
public static void main (String args[]) {
      try{
    int serverPort = 7896; // the server port
    ServerSocket listenSocket = new ServerSocket(serverPort);
    while(true) {
        Socket clientSocket = listenSocket.accept();
        Connection c = new Connection(clientSocket);
    }
      } catch(IOException e) {System.out.println("Listen socket:"+e.getMessage());}
}}

class Connection extends Thread {
        DataInputStream in;
        DataOutputStream out;
        Socket clientSocket;
public Connection (Socket aClientSocket) {
    try {
    clientSocket = aClientSocket;
    in = new DataInputStream( clientSocket.getInputStream());
    out =new DataOutputStream( clientSocket.getOutputStream());
    this.start();
     } catch(IOException e) {System.out.println("Connection:"+e.getMessage());}
}

public void run(){
     try {                             // an echo server
    String data = in.readUTF();     // read a line of data from the stream
    out.prepareUTF(data);
     }catch (EOFException e){System.out.println("EOF:"+e.getMessage());
     } catch(IOException e) {System.out.println("readline:"+e.getMessage());
     } finally{ try {clientSocket.close();}catch (IOException e){/*close failed*/}}
}}

Programming Language, Programming

  • Category:- Programming Language
  • Reference No.:- M91510

Have any Question? 


Related Questions in Programming Language

Spreadsheet exercise1 run the spreadsheet program in your

Spreadsheet Exercise 1. Run the spreadsheet program in your computer and type the following:   A B C D E F 1 PAYROLL 2 XYZ COMPANY Employee Name Department Degree Salary Need Increase? 3 Nasser Mechanical Master 15000   ...

Program 1the local yogurt shop is expanding its selection

Program #1 The local yogurt shop is expanding its selection of frozen treats, and would like you to modify the program you wrote to calculate and print their customer's bills. You will also write a test plan to test the ...

Most languages are case sensitive so keywords can be

Most languages are case sensitive, so keywords can be written only one way, and the regular expressions describing their lexemes are very simple. However, some languages, like SQL, are case insensitive, so a keyword can ...

Programming taskswhile working on the tasks below you are

Programming tasks While working on the tasks below, you are free to request assistance on D2L at: Communications / Discussions / Assignments (or other appropriate sub-topic) These tasks entail modifying your prior code f ...

Contact list project where the user enters first name last

Contact list project where The user enters first name, last name, street address, email address, phone number and notes. Use Case Name: Enter a new person ID number: 1 Actors: user Preconditions: The user has chosen to e ...

Assignmentreference this assignment is an object oriented

Assignment Reference: This assignment is an object oriented version of the In-class assignment. The functionality supported for a single vehicle in ICA 01 would be extended to multiple vehicles using a single class Car, ...

Assignmenta student had to make a decision on how to be

Assignment A student had to make a decision on how to be paid. The student could accept a straight $10/hour or take 10 cents for the first hour, but have the hourly wage double each hour. That is, the student would make ...

Assignmentwrite a program that calculates the intersection

Assignment Write a program that calculates the intersection of two sets of numbers. The sets can be represented using arrays. The general idea is that A!=0 if i is in the set and A==0 if it is not. Array element A can th ...

Design and implement your own simple class to represent any

Design and implement your own simple class to represent any household item of your choice (toaster, fan, hair dryer, piano ...) Your class should have a constructor, one additional method and at least one member variable ...

Create an application for a company to save and display

Create an application for a company to save and display customer information. Begin with designing class named Person with the following properties: · LastName (String) · FirstName (String) · Address (String) · City (Str ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro

Describe what you learned about the impact of economic

Describe what you learned about the impact of economic, social, and demographic trends affecting the US labor environmen