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README.md
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README.md
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## Partie 1 : protocole TFTP
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## Partie 1 : protocole TFTP
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### Exercice 1 : Observation
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### Exercice 1 : Observation
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Côté client
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```
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tftp localhost 6969
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tftp> get test.html
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put test.html
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quit
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Transfer timed out.
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```
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Côté serveur
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```
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nc -u -l -p 6969
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test.htmlnetasciitest.htmlnetasciitest.htmlnetasciitest.htmlnetasciitest.htmlnetasciitest.htmlnetasciitest.htmlnetasciitest.htmlnetasciitest.htmlnetasciitest.htmlnetascii
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```
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### Exercice 2 : Décodage des requêtes.
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### Exercice 2 : Décodage des requêtes.
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### Exercice 3 : Acquitter
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### Exercice 3 : Acquitter
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BIN
images/p1_ex1_tftp.pcapng
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BIN
images/p1_ex1_tftp.pcapng
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package pr.tp2.udp.tftp;
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package pr.tp2.udp.tftp;
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import java.io.IOException;
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import java.net.DatagramPacket;
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import java.net.DatagramPacket;
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import java.net.DatagramSocket;
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import java.net.InetAddress;
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import java.net.ServerSocket;
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public class TftpDecode {
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public class TftpDecode {
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public static void main(String[] args) {
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public static void main(String[] args) throws IOException {
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int portTFTP = 7777;
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int portServeur= 6969;
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InetAddress ipServeur = InetAddress.getByName("localhost");
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try{
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// Attends sur le port 6969
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// Attends sur le port 6969
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DatagramSocket dSocket = new DatagramSocket(portTFTP);
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// Boucle
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// Boucle
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while (true) {
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byte[] buffer = new byte[512];
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// Reception du packet
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// Reception du packet
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DatagramPacket p = null;
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DatagramPacket reception =new DatagramPacket(buffer, buffer.length);
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dSocket.receive(reception);
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// Affichage du packet
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// Affichage du packet
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System.out.println(new String(buffer));
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// Attention à ne pas afficher plus d'informations que nécessaire.
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// Attention à ne pas afficher plus d'informations que nécessaire.
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// Décodage du packet
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// Décodage du packet
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decodeRequest(p);
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decodeRequest(reception);
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}
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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}
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public static void affiche(byte[] bytes) {
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public static void affiche(byte[] bytes) {
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