⟩ Explain A multi-threaded DateServe that listens on port 3000 and waits for requests from clients?
Here A multi-threaded DateServer that listens on port 3000 and waits for requests from clients. Whenever there is a request, the server replies by sending a Date object (over sockets) to the client as shown in Code Sample.
Code Sample: DateServer.java
import java.io.*;
import java.net.*;
import java.util.*;
public class DateServer
extends Thread {
private ServerSocket dateServer;
public static void main
(String argv[]) throws Exception {
new DateServer();
}
public DateServer() throws Exception {
dateServer = new ServerSocket(3000);
System.out.println
("Server listening on port 3000.");
this.start();
}
public void run() {
while(true) {
try {
System.out.println("Waiting for connections.");
Socket client = dateServer.accept();
System.out.println("Accepted a connection
from: "+ client.getInetAddress());
Connect c = new Connect(client);
} catch(Exception e) {}
}
}
}
class Connect extends Thread {
private Socket client = null;
private ObjectInputStream ois = null;
private ObjectOutputStream oos = null;
public Connect() {}
public Connect(Socket clientSocket) {
client = clientSocket;
try {
ois = new ObjectInputStream
(client.getInputStream());
oos = new ObjectOutputStream
(client.getOutputStream());
} catch(Exception e1) {
try {
client.close();
}catch(Exception e) {
System.out.println(e.getMessage());
}
return;
}
this.start();
}
public void run() {
try {
oos.writeObject(new Date());
oos.flush();
// close streams and connections
ois.close();
oos.close();
client.close();
} catch(Exception e) {}
}
}
