Connection reset error when reading data from client java [duplicate]

I am developing Client-Server App using Java Socket. My Application Has Server which will listen on Port

• Client will connect to that port
• Receive Data From Client
• Send Data To Client

Part of My Code

public void run() {
    System.out.println("Got a client !");
    try {
        // Get Data From Client
        int red = -1;
        byte[] buffer = new byte[5 * 1024]; // a read buffer of 5KiB
        byte[] redData;
        StringBuilder clientData = new StringBuilder();
        String redDataText;
        while ((red = clientSocket.getInputStream().read(buffer)) > -1) {

/* Get Data From Client Here Code Hidden */

            System.out.println("Data From Client :"
                    + clientData.toString());

            OutputStream out = clientSocket.getOutputStream();
            DataOutputStream dos = new DataOutputStream(out);

            String sDataToClient = "TEST DATA TO SEND IN BYTE ARRAY";

            byte[] b = sDataToClient.getBytes("UTF-8");

            byte[] bClientSend = new byte[b.length + 2];

            bClientSend[0] = (byte) 1;
            bClientSend[1] = (byte) 79;

            System.arraycopy(b, 0, bClientSend, 2, b.length);

            dos.write(bClientSend);
            System.out.println(Arrays.toString(bClientSend));

        }
        clientSocket.close();
    } catch (IOException e) {
        e.printStackTrace();
    }
}

I Get java.net.SocketException: Connection reset after Data SENT to Client at following line

while ((red = clientSocket.getInputStream().read(buffer)) > -1) {

I am able to see Array Contents of System.out.println(Arrays.toString(bClientSend)); Then error occurs