| 1 | import java.io.*; |
| 2 | import java.net.*; |
| 3 | import java.util.*; |
| 4 | |
| 5 | public class SocketClient { |
| 6 | BufferedReader lecture; // pour le flot d'entrée venant du serveur |
| 7 | PrintWriter ecriture; // pour le flot de sortie vers le serveur |
| 8 | ObjectInput oLecture; |
| 9 | ObjectOutput oEcriture; |
| 10 | Socket sock; // le socket client |
| 11 | |
| 12 | public SocketClient() { |
| 13 | // établie une connexion au serveur par un appel |
| 14 | // à connexionServeur() |
| 15 | attributesInit(); |
| 16 | try { |
| 17 | connexionServeur("localhost", 5000); |
| 18 | } |
| 19 | catch (IOException e) { |
| 20 | System.err.println("IOException: " + e); |
| 21 | closeRWIO(); |
| 22 | } |
| 23 | } |
| 24 | |
| 25 | public SocketClient(String adresseIPServeur, int portServeur) { |
| 26 | // établie une connexion au serveur par un appel |
| 27 | // à connexionServeur() |
| 28 | attributesInit(); |
| 29 | try { |
| 30 | connexionServeur(adresseIPServeur, portServeur); |
| 31 | } |
| 32 | catch (IOException e) { |
| 33 | System.err.println("IOException: " + e); |
| 34 | closeRWIO(); |
| 35 | } |
| 36 | } |
| 37 | |
| 38 | private void connexionServeur(String adresseIPServeur, int portServeur) throws IOException { |
| 39 | // créer un objet socket lié au socket serveur et l'affecte à sock |
| 40 | // puis établie les chaînages de flot nécessaires |
| 41 | // pour l'envoi et la reception de messages |
| 42 | sock = new Socket(adresseIPServeur, portServeur); |
| 43 | |
| 44 | OutputStream OStream = sock.getOutputStream(); |
| 45 | ecriture = new PrintWriter(OStream); |
| 46 | oEcriture = new ObjectOutputStream(OStream); |
| 47 | |
| 48 | InputStream IStream = sock.getInputStream(); |
| 49 | InputStreamReader IMesg = new InputStreamReader(IStream); |
| 50 | lecture = new BufferedReader(IMesg); |
| 51 | oLecture = new ObjectInputStream(IStream); |
| 52 | } |
| 53 | |
| 54 | private void attributesInit() { |
| 55 | sock = null; |
| 56 | lecture = null; |
| 57 | ecriture = null; |
| 58 | oLecture = null; |
| 59 | oEcriture = null; |
| 60 | } |
| 61 | |
| 62 | /** |
| 63 | * Send a message on the opened client socket |
| 64 | * @param msg a string containing the message to send |
| 65 | */ |
| 66 | public void sendMsg(String msg) { |
| 67 | ecriture.println(msg); |
| 68 | ecriture.flush(); |
| 69 | } |
| 70 | |
| 71 | /** |
| 72 | * Send an object message on the opened client socket |
| 73 | * @param msg a string containing the message to send |
| 74 | */ |
| 75 | public void sendoMsg(Message oMsg) throws IOException { |
| 76 | oEcriture.writeObject(oMsg); |
| 77 | oEcriture.flush(); |
| 78 | } |
| 79 | |
| 80 | /** |
| 81 | * Receive a message sent on the opened client socket |
| 82 | * @return a string containing the received message |
| 83 | */ |
| 84 | public String receiveMsg() throws IOException { |
| 85 | String line = new String(); |
| 86 | //FIXME?: read only the line before the ending newline |
| 87 | line = lecture.readLine(); |
| 88 | return line; |
| 89 | } |
| 90 | |
| 91 | /** |
| 92 | * Receive an object message sent on the opened client socket |
| 93 | * @return a string containing the received message |
| 94 | */ |
| 95 | public Message receiveoMsg() throws IOException, ClassNotFoundException { |
| 96 | return (Message)oLecture.readObject(); |
| 97 | } |
| 98 | |
| 99 | /** |
| 100 | * Close all opened I/O streams attached to this object instance |
| 101 | */ |
| 102 | public void closeRWIO() { |
| 103 | try { |
| 104 | if (sock != null) |
| 105 | sock.close(); |
| 106 | if (lecture != null) |
| 107 | lecture.close(); |
| 108 | if (ecriture != null) |
| 109 | ecriture.close(); |
| 110 | if (oLecture != null) |
| 111 | oLecture.close(); |
| 112 | if (oEcriture != null) { |
| 113 | oEcriture.close(); |
| 114 | } |
| 115 | } |
| 116 | catch (IOException e) { |
| 117 | System.err.println("IOException: " + e); |
| 118 | } |
| 119 | } |
| 120 | |
| 121 | } // fin classe SocketClient |