From 47d4e0823d18f2f3545a01de6c3f7e0237ef54d2 Mon Sep 17 00:00:00 2001
From: "james.timberlake" <james.timberlake@nps.edu>
Date: Tue, 23 Jul 2024 10:48:00 -0700
Subject: [PATCH] Client+Server UDP Examples
---
.../homework1/Timberlake/Client.java | 15 +++++++++++++--
.../homework1/Timberlake/Server.java | 4 ++--
2 files changed, 15 insertions(+), 4 deletions(-)
diff --git a/assignments/src/MV3500Cohort2024JulySeptember/homework1/Timberlake/Client.java b/assignments/src/MV3500Cohort2024JulySeptember/homework1/Timberlake/Client.java
index 0a41995d93..d905f89d60 100644
--- a/assignments/src/MV3500Cohort2024JulySeptember/homework1/Timberlake/Client.java
+++ b/assignments/src/MV3500Cohort2024JulySeptember/homework1/Timberlake/Client.java
@@ -3,6 +3,7 @@ package MV3500Cohort2024JulySeptember.homework1.Timberlake;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetAddress;
+import java.util.Scanner;
/**
*
@@ -11,6 +12,7 @@ import java.net.InetAddress;
public class Client {
public static void main(String[] args) {
DatagramSocket socket = null;
+ Scanner scanner = new Scanner(System.in);
try {
// Create a socket to communicate with the server
socket = new DatagramSocket();
@@ -18,8 +20,12 @@ public class Client {
byte[] sendData = new byte[1024]; // Buffer to store data to send
byte[] receiveData = new byte[1024]; // Buffer to store received data
+ // Get user input
+ System.out.print("Enter message to send to server: ");
+ String message = scanner.nextLine(); //Read user input
+
// Send message to server
- String message = "Hello from client!"; // Message to send
+ //String message = "Hello from client!"; // Message to send
sendData = message.getBytes(); // Convert message to bytes
DatagramPacket sendPacket = new DatagramPacket(sendData, sendData.length, serverAddress, 9876);
socket.send(sendPacket); // Send packet to server
@@ -28,10 +34,15 @@ public class Client {
DatagramPacket receivePacket = new DatagramPacket(receiveData, receiveData.length);
socket.receive(receivePacket); // Blocking call until a packet is received
String responseMessage = new String(receivePacket.getData(), 0, receivePacket.getLength());
- System.out.println("Client Received: " + responseMessage); // Print received response
+ System.out.println("Client received: " + responseMessage); // Print received response
+
} catch (Exception e) {
e.printStackTrace(); // Print any exceptions that occur
+
} finally {
+ if (scanner != null) {
+ scanner.close(); // Close scanner
+ }
if (socket != null && !socket.isClosed()) {
socket.close(); // Close the socket to release resources
}
diff --git a/assignments/src/MV3500Cohort2024JulySeptember/homework1/Timberlake/Server.java b/assignments/src/MV3500Cohort2024JulySeptember/homework1/Timberlake/Server.java
index bf279722e7..54b88a994b 100644
--- a/assignments/src/MV3500Cohort2024JulySeptember/homework1/Timberlake/Server.java
+++ b/assignments/src/MV3500Cohort2024JulySeptember/homework1/Timberlake/Server.java
@@ -23,12 +23,12 @@ public class Server {
DatagramPacket receivePacket = new DatagramPacket(receiveData, receiveData.length);
socket.receive(receivePacket); // Blocking call until a packet is received
String message = new String(receivePacket.getData(), 0, receivePacket.getLength());
- System.out.println("Server Received: " + message); // Print received message
+ System.out.println("Server received: " + message); // Print received message
// Prepare response to client
InetAddress clientAddress = receivePacket.getAddress(); // Get client's address
int clientPort = receivePacket.getPort(); // Get client's port
- String responseMessage = "Hello from server!"; // Response message
+ String responseMessage = "Hello From Server, I received: " + message; // Response message
sendData = responseMessage.getBytes(); // Convert response message to bytes
DatagramPacket sendPacket = new DatagramPacket(sendData, sendData.length, clientAddress, clientPort);
socket.send(sendPacket); // Send response packet to client
--
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