Classe ChatMessage avec une taille d'en tête définie

Chat/serveurUdp/serveurUdp/ChatMessage.cs

+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace ClientUdp
+{
+    public enum Commande
+    {
+        POST, GET, HELP, QUIT, STOPSERVEUR, SUBSCRIBE, SUBSCRIBEv2, UNSUBSCRIBE
+    };
+
+    public enum CommandeType { REQUETE, REPONSE };
+
+    class ChatMessage
+    {
+        public const int bufferSize = 1500;
+        public const int headerSize = 35;
+
+        public Commande commande;               // commande
+        public CommandeType commandeType;       // type (Requête/Réponse)
+        public int dataSize;                    // taille de la donnée
+        public String data;                     // données de la commande
+        public String pseudo;                   // pseudo de l'envoyeur 
+
+        public ChatMessage(Commande commande, CommandeType type, String data, String pseudo)
+        {
+            this.commande = commande;
+            this.commandeType = type;
+            this.dataSize = data.Length;
+            this.data = data;
+            this.pseudo = pseudo;
+        }
+
+        public ChatMessage(byte[] buffer)
+        {
+            commande = (Commande)buffer[0];
+            commandeType = (CommandeType)buffer[1];
+            pseudo = Encoding.ASCII.GetString(buffer, 2, 30).TrimEnd(new char[] { '\0' });
+            dataSize = BitConverter.ToInt32(buffer, 32);
+            data = Encoding.ASCII.GetString(buffer, 36, dataSize);
+        }
+
+        public byte[] GetBytes()
+        {
+            byte[] buffer = new byte[bufferSize];                           // Déclaration du buffer
+
+            buffer[0] = (byte)commande;                                     // Commande
+            buffer[1] = (byte)commandeType;                                 // Type de la commande
+            Encoding.ASCII.GetBytes(pseudo, 0, pseudo.Length, buffer, 2);   // Pseudo à 30 bits
+            byte[] intBuf = BitConverter.GetBytes(dataSize);                // Taille de la data
+            buffer[32] = intBuf[0];                                         // Int stocké sur 4bits
+            buffer[33] = intBuf[1];
+            buffer[34] = intBuf[2];
+            buffer[35] = intBuf[3];
+            Encoding.ASCII.GetBytes(data, 0, data.Length, buffer, 36);      // Data
+
+            return buffer;
+        }
+
+        public static byte[] GetBytes(Commande commande, CommandeType type, String data, String pseudo)
+        {
+            ChatMessage chatCommande = new ChatMessage(commande, type, data, pseudo);
+            return chatCommande.GetBytes();
+        }
+
+        public override string ToString()
+        {
+            return "[" + commande + "," + commandeType + ",\"" + pseudo + "\"," + dataSize + ",\"" + data + "\"]";
+        }
+
+    }
+}