Retrieving data from Biometric Fingerprint Attendance Device

Question

I am trying to connect with a Biometric Fingerprint Attendance Device using a Java Program. The device I am using is a Pegasus T5 Fingerprint scanner. Unfortunately their SDK for this device (which can be downloaded here) covers only C#, .Net, and VB which I have no expertise. And when I have requested the manufacturers, they have replied that there is no Java SDK for the device. Even though I have no knowledge on any of those languages, I gave a try to understand the codes in the SDK to find out how the device is connecting and I saw that it is just making a connection with the device using the network ip and port number.

If you refer to the C# SDK of the device, you can see the example I saw on this at frmEvent.cs which in the cmdStartMoniter_Click method, make the connection as follows.

bRet = bpc.StartEventCapture(0, util.pubIPAddrToLong(txtSourceIP.Text), Convert.ToInt32(txtPortNumber.Text));

And that refers to the method StartEventCapture as public virtual bool StartEventCapture(int dwCommType, int dwParam1, int dwParam2); which is in a .dll file as it appears and which I have lost my track as I have further knowledge on how to figure out the code.

However keeping that example I had seen in my head, as my next step I started researching for a global standard on how to connect, send and retrieve data with a Fingerprint Device which again I wasn't lucky enough to find a clear solution. But with some examples from some people who have been trying to deal with the same and the example I saw by myself, I tried to connect with the device by creating a Socket object but when I executed it, it only resulted with the java.net.ConnectException: Connection timed out: connect

There are four questions

1. Is there any Java SDK for Biometric Fingerprint Attendance Devices which I can use for my device as well?
2. Is there any general, standard way to connect, send and retrieve data from such device using Java?
3. If connecting to the device via a Socket is a solution, is there any specific, standard requests I should be sending to the device in order to receive a response from it?
4. If the attempt I have made is a way to do it, what I have I done wrong with it and how should I correct the problem?

This is the code I used to connect with the device.

    String host = "192.168.168.100";
    int port = Integer.parseInt("5005");

    try {
        Socket socket = new Socket(host, port);
        BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream()));

        String line;
        while (true){
            line = in.readLine();
            if (line != null){
                System.out.println(line);
            }
        }
    } catch (UnknownHostException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }

Answer 1

Each biomatric device have normally lAN port or Web interface. Biomatric device sends data on specific port. for example

192.168.1.23:8080

you can make connection to it using java sockets and can read data ..

Socket socket = new Socket("192.168.1.23","8080");

keep it up

enjoy