Pouvez-vous fournir un exemple de tampon d'octets transféré entre deux classes Java via le datagramme UDP?Transfert de tampon d'octet via UDP
1
A
Répondre
4
Comment ça?
import java.io.IOException; import java.net.DatagramPacket; import java.net.DatagramSocket; import java.net.InetSocketAddress; public class Server { public static void main(String[] args) throws IOException { DatagramSocket socket = new DatagramSocket(new InetSocketAddress(5000)); byte[] message = new byte[512]; DatagramPacket packet = new DatagramPacket(message, message.length); socket.receive(packet); System.out.println(new String(packet.getData(), packet.getOffset(), packet.getLength())); } }
import java.io.IOException; import java.net.DatagramPacket; import java.net.DatagramSocket; import java.net.InetSocketAddress; public class Client { public static void main(String[] args) throws IOException { DatagramSocket socket = new DatagramSocket(); socket.connect(new InetSocketAddress(5000)); byte[] message = "Oh Hai!".getBytes(); DatagramPacket packet = new DatagramPacket(message, message.length); socket.send(packet); } }
0
@none
Les classes DatagramSocket vous avez besoin d'un décrasser, DatagramChannel est un peu mieux pour les clients, mais source de confusion pour la programmation du serveur. Par exemple:
import java.io.IOException; import java.net.InetSocketAddress; import java.nio.ByteBuffer; import java.nio.channels.DatagramChannel; public class Client { public static void main(String[] args) throws IOException { DatagramChannel channel = DatagramChannel.open(); ByteBuffer buffer = ByteBuffer.wrap("Oh Hai!".getBytes()); channel.send(buffer, new InetSocketAddress("localhost", 5000)); } }
Bring on JSR-203 Je dis