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Package UDP

This document contains a Java implementation of a UDP client that sends messages to a server running on localhost. It uses DatagramSocket for communication, allowing the user to input messages and receive responses in a continuous loop. The client constructs and sends DatagramPackets containing the user's messages and listens for replies from the server.

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Sơn Nguyễn Ngọc
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6 views1 page

Package UDP

This document contains a Java implementation of a UDP client that sends messages to a server running on localhost. It uses DatagramSocket for communication, allowing the user to input messages and receive responses in a continuous loop. The client constructs and sends DatagramPackets containing the user's messages and listens for replies from the server.

Uploaded by

Sơn Nguyễn Ngọc
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
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package UDP;

import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetAddress;
import java.util.Scanner;

public class UDPClient {


public static void main(String[] args) throws Exception {
DatagramSocket cSocket = new DatagramSocket();
InetAddress serverAddress = InetAddress.getByName("localhost");
Scanner scanner = new Scanner(System.in);

while (true) {
System.out.print("To server: ");
String message = scanner.nextLine();
byte[] sendData = message.getBytes();

DatagramPacket sendPacket = new DatagramPacket(sendData,


sendData.length, serverAddress, 98);
cSocket.send(sendPacket);

byte[] receiveData = new byte[1024];


DatagramPacket receivePacket = new DatagramPacket(receiveData,
receiveData.length);
cSocket.receive(receivePacket);

String response = new String(receivePacket.getData(), 0,


receivePacket.getLength());
System.out.println("Received from server: " + response);
}
}
}

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