Question

Hi,

i'm trying to sending data over TCP/IP following your codec guide.

I implemented a java server socket that correctly receive the IMEI from the device (FMB202), but then when it responds with the 0x01 byte the device doesn't receive anything and the connection expires.

I can see from the Configurator application that the bytes of data received doesn't change over several attemps.

Why i'm not enable to send data to the FMB202 device?

Thanks

Luca

Answer 1

Hello.

Because your server does not send data packet.

Provide source code.

Regards

Comments

Below my source code.

In the variable line i receive correctly the imei and than in my teltonika configurator don't receive any byte.

            ServerSocket serverSocket = new ServerSocket(port);
            Socket clientSocket = serverSocket.accept();
            InputStream inputStream = clientSocket.getInputStream();
            BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));
            String line = reader.readLine();
            System.out.println("From Client: " + line);

            byte response = (byte)0x01;
            OutputStream output = clientSocket.getOutputStream();
            output.write(response);
            output.flush();

Even with the Hercules utilitity, i can receive only the IMEI data:

Thanks