J'ai crée un client et un serveur UDP codé en java. Mon client arrive a envoyer des message a mon serveur mais maintenant j'aimerais bien que quand je rentre une String dans la console du serveur elle soit envoyé au client. Savez -vous comment faire, après de multiple recherche je ne trouve pas réponse a ma question. Merci d'avance pour vos réponse.

voici le code du serveur 

j'ai essayer une méthode sendMessage mais cela ne fonctionne pas 

package inter;

import java.io.IOException;
import java.io.OutputStream;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetAddress;
import java.net.ServerSocket;
import java.net.Socket;
import java.net.SocketException;
import java.util.Scanner;


public class serveurUDP  extends Thread {

	private DatagramSocket datagramSocket;
	private byte[] buffer = new byte[256];
	private byte[] buff;
	Scanner scanner = new Scanner(System.in);
	private InetAddress inetAddress1;
	public serveurUDP(DatagramSocket datagramSocket) 
	{
		this.datagramSocket = datagramSocket;
	}
	
	public void receiveThenSend() 
	{
		boolean running = true;
		Scanner scanner = new Scanner(System.in);
		while(running) 
		{
			try 
			{
				DatagramPacket datagramPacket = new DatagramPacket(buffer,buffer.length);
				datagramSocket.receive(datagramPacket);
				InetAddress inetAddress = datagramPacket.getAddress();
				int port = datagramPacket.getPort();
				String messageFromClient = new String(datagramPacket.getData());
				System.out.println("Message du client: " + messageFromClient);
				datagramSocket.send(datagramPacket);
				
			}catch (IOException e) {
				e.printStackTrace();
			}
		
			
		}
	}
/*	public void sendMessage() throws IOException 
	{
		while(true) 
		{
			String messageToSend = scanner.nextLine();
			buff = messageToSend.getBytes();
			DatagramPacket datagramPacketR = new DatagramPacket (buff, buff.length, inetAddress1,4552); 
			datagramSocket.send(datagramPacketR);
			String messageEnvoie =  new String(datagramPacketR.getData());
			System.out.println("renvoie : " + messageEnvoie);
		}
	}*/
	public static void main (String[]args) throws IOException 
	{
		DatagramSocket datagramSocket = new DatagramSocket(4552);
		serveurUDP server = new serveurUDP(datagramSocket);
		server.receiveThenSend();
		//server.sendMessage();
	
	}
	
	
}

et le code du client: 

package inter;

import java.io.IOException;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetAddress;
import java.net.SocketException;
import java.net.UnknownHostException;
import java.util.Scanner;

public class clientUDP {

	private DatagramSocket datagramSocket;
	private InetAddress inetAddress;
	private byte[] buffer;
	
	
	public clientUDP(DatagramSocket datagramSocket,InetAddress inetAddress ) 
	{
		this.datagramSocket = datagramSocket;
		this.inetAddress = inetAddress;
	}
	
	public void sendThenReceive(String string) 
	{
		try 
			{
				buffer = string.getBytes();
				DatagramPacket datagramPacket = new DatagramPacket (buffer,buffer.length,inetAddress,4552);
				datagramSocket.send(datagramPacket);
				datagramSocket.receive(datagramPacket);
				String message = new String(datagramPacket.getData());
				System.out.println("envoie au serveur :" + message);
			}
			catch(IOException e) {
				e.printStackTrace();
			}
		}
}

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Edité par anaellemariette1 26 juillet 2022 à 15:03:51