I'm using port fowarding to connect my java code to my python serveur but the  java code can only connect to hit, i think it might be cause, i try to do that my java code connects, send and receive a message from the serveur without closing it. So send to the serveur and after receive a message from the serveur. But after doing this modification now i can't send any message to it.I think the error his in java code but it might be in the python code. Thank to help me if you know the answer. 

 sock = new Socket( "public ip router", 1234);


                    printWriter = new PrintWriter( sock.getOutputStream(),true);
                    try {
                        printWriter.write( "hello world" );
                        printWriter.flush();
                    }catch (Exception e){
                        System.out.println( e );
                    }
                    dis = new DataInputStream(sock.getInputStream());
                    final String message_entrant21;

                    message_entrant21 = dis.readLine();
                    Message232 = message_entrant21;
                    printWriter.close();
                    sock.close();

and the serveur in python

 try:
            host, port = ('',1234)
            socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

            o=False
            while o==False:
                try:
                    socket.bind((host, port))
                    print("le serveur est démarré! o = true")
                    o=True
                except OSError:
                    o=False
                finally:
                    if(o is not False):
                        o=True

            socket.listen(5)
            conn, adress = socket.accept()
            print("listening")
            data2= conn.recv(255)
            print("send the message")
            socket.sendall("hello to you")

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Edité par RaphaelScott 28 octobre 2019 à 18:35:39

Bonjour,

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Le sujet est déplacé de la section Langage Java vers la section Let's talk!