Question

implement the follwing code using command promp or Eclipse or any other program you are familiar with. keep the name of the classes exatcly the same as requested for testing purpose. please follow each instruction provided below

Objective of this assignment o get you famililar with developing and implementing TCP or UDP sockets. What you need to do: I. Implement a simple TCP Client-Server application 2. and analyze round trip time measurements for each of the above applications 3. The objective is to implement a client-server application using a safe method: start from a for the client and the server. You must slowly and carefully bend (modify) little by little the client and until you achieve your ultimate goal. You must bend and expand each piece alternatively ron. From time to time save your working client and server such that you can roll-back to the latest working Objective: server alternatively like the way a black-smith forges code in case of S. For this programming assignment, you are advised to start from the simple echo client and server to very simple application. Part h rcr Capithlize e bolient- Sclomr application Implement the following Client-Server application that will use two programs: a client program myFirst TCPClient.java and myFirstTCPServer-java a) Client: myFirstTCPClient.java This program must take two arguments: a hostname H and a port number P. The hostname h is a name or a decimal dotted-quad IP address of the server Sv. The port number P is any valid port number where the server Sv is binds to. This program must: I) Create a TCP client socket connected with the server Sv running on the machine with hostname (or IP address) h bound to Port number P 2) Repeatedly perform the following actions: i) Prompt the user to enter a sentence S ii) Send the sentence S to the server Sv ii) Receive the response from the server iv) Measure the duration between the time when the sentence S was sent and the time a response was received. and the time expressed in milliseconds. vi) Collect the round trip time. To implement the client myFirstTCPClientjava, you should consider start with the program TCPEchoClientjava (provided on Canvas with this programming assignment) Do not forget to change the name of the class inside the TCPEchoClient.java. b) Server: myFirstTCPServer.java This program must take one argument: a port number P. The port number P is any valid port number This program must: I) Create a TCP server socket 2) Wait for a client to connect, receive a message, display it with the IP address and port # of the client, capitalize the message, display the message, and echo back the "capitalized" message. To implement the server myfirstTCPServer java, you should consider start with the program TCPEchoServerjava (provided on Canvas with this programming assignment). Do not forget to change the name of the class inside the program TCPEchoServer.java Part Il: UDP "Capitalize" Client-Server Repeat Part using UDP sockets. Call the client and server programs myFirstUDPClient,java and myFirstUDPServer java, respectively o implement the server (respectively, client) myFirstUDPServer java (respectively, myFirstUDPClient.java). you espectively, UDPEchoClien Timeoutjava) (provided on should consider start with the program UDPEchoServer.java( s Canvas with this s programming assignment). Do not forget to change the name of the class inside the program. Data collection and analysis For each application (UPD and TCP), report separately the min, average, and max round trip time.

Answer 1

PROGRAM :

import java.io.*;
import java.net.*;
public class MyServer {
public static void main(String[] args){
try{
ServerSocket ss=new ServerSocket(6666);
Socket s=ss.accept();//establishes connection   
DataInputStream dis=new DataInputStream(s.getInputStream());
String str=(String)dis.readUTF();
System.out.println("message= "+str);
ss.close();
}
catch(Exception e){System.out.println(e);}
}
}

File: MyClient.java

import java.io.*;
import java.net.*;
public class MyClient {
public static void main(String[] args) {
try{
Socket s=new Socket("localhost",6666);
DataOutputStream dout=new DataOutputStream(s.getOutputStream());
dout.writeUTF("Hello Server");
dout.flush();
dout.close();
s.close();
}
catch(Exception e){System.out.println(e);}
}
}

>>Java Socket Programming
(customer will compose first to the server then server will get and print the content. At that point server will keep in touch with the customer and customer will get and print the content and progression goes on.)

File: MyServer.java

import java.net.*;
import java.io.*;
class MyServer{
public static void main(String args[])throws Exception{
ServerSocket ss=new ServerSocket(3333); //creating new socket with 3333
Socket s=ss.accept();
DataInputStream din=new DataInputStream(s.getInputStream());
DataOutputStream dout=new DataOutputStream(s.getOutputStream());
BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
String str="",str2="";
while(!str.equals("stop")){
str=din.readUTF();
System.out.println("client says: "+str); //prints out to the desktop
str2=br.readLine();
dout.writeUTF(str2);
dout.flush();
}
din.close();
s.close();
ss.close();
}
}

File: MyClient.java

import java.net.*;
import java.io.*;
class MyClient{
public static void main(String args[])throws Exception{
Socket s=new Socket("localhost",3333); //creating new socket
DataInputStream din=new DataInputStream(s.getInputStream());
DataOutputStream dout=new DataOutputStream(s.getOutputStream());
BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
String str="",str2="";
while(!str.equals("stop")){
str=br.readLine(); //reads single line at a time
dout.writeUTF(str);
dout.flush();
str2=din.readUTF();
System.out.println("Server says: "+str2);
}
dout.close();
s.close();
}
}