Subnet Scanner not showing all the devices. about androidnetworktools HOT 17 OPEN

SubnetDevices.fromLocalAddress().setTimeoutMillis(10000).findDevices(new SubnetDevices.OnSubnetDeviceFound() {
    @Override
    public void onDeviceFound(Device device) {
        // Stub: Found subnet device
    }

    @Override
    public void onFinished(ArrayList<Device> devicesFound) {
        // Stub: Finished scanning
    }
});

boolean filloi;
                    Process p = null;
                    try {
                        p = Runtime.getRuntime().exec("ping " + "-v " + "-c " + 1 + " " + testIp);
                        filloi = true;
                    } catch (IOException e) {
                        filloi = false;
                        e.printStackTrace();
                    }
                    String readData;
                    if (filloi) {
                        BufferedReader reader = new BufferedReader(new InputStreamReader(p.getInputStream()));
                        BufferedReader reader1 = new BufferedReader(new InputStreamReader(p.getErrorStream()));

                        while ((readData = reader.readLine()) != null) {
                            Log.d("PINGIMI", readData);
                            totalReadData.add(readData);

                            if (!readData.startsWith("---")) {
                                // Pergjigje ping
                                Pattern M = Pattern.compile("(^[\\d]+) bytes from ([^:]+): icmp_seq=([^ ]+) ttl=([\\d]+) time=([^ ]+) ms");
                                Matcher MM = M.matcher(readData);
                                // Statistikat e pingimit
                                Pattern M3 = Pattern.compile("(^[\\d]+) packets transmitted, ([^ ]+) received, ([\\d]+)% packet loss, time ([^ ]+)ms");
                                Matcher MM3 = M3.matcher(readData);
                                // TimeOut
                                Pattern M6 = Pattern.compile("^no answer yet for icmp_seq=([\\d]+)");
                                Matcher MM6 = M6.matcher(readData);

                                if (MM.find()) // Ping OK
                                {
                                    // HERE I ADD DEVICES THAT RESPONDS TO PING
                                }
                                else if (MM6.find()) // Timeout
                                {
                                    // HERE ADD DEVICES TOO THAT RETURN TIMEOUT BUT THEY ARE ONLINE IN THAT LAN
                                }

// Ping
Pattern M = Pattern.compile("(^[\\d]+) bytes from ([^:]+): icmp_seq=([^ ]+) ttl=([\\d]+) time=([^ ]+) ms");
// Time Stats
Pattern M1 = Pattern.compile("^rtt [^0-9]*([\\d][^/]+)/([^/]+)/([^/]+)/([^ ]+) ms$");
// Host Unreachable
Pattern M2 = Pattern.compile("\\bFrom ([^:]+): icmp_seq=([^ ]+) (Destination Host Unreachable)");
// Ping Stats
Pattern M3 = Pattern.compile("(^[\\d]+) packets transmitted, ([^ ]+) received, ([\\d]+)% packet loss, time ([^ ]+)ms");
// Error Stats
Pattern M4 = Pattern.compile("(^[\\d]+) packets transmitted, ([^ ]+) received, [+]([^ ]+) errors, ([\\d]+)% packet loss, time ([^ ]+)ms");
// Network Unreachable
Pattern M5 = Pattern.compile("^[ping:]+ [sendmg:]+ ([Network isunachbl]+)");
// TimeOut
Pattern M6 = Pattern.compile("^no answer yet for icmp_seq=([\\d]+)");
//TTL Expired
Pattern M7 = Pattern.compile("\\bFrom ([^:]+): icmp_seq=([^ ]+) (Time to live exceeded)");

 [email protected] ~ $ ping -v -i 1 192.168.0.3
 PING 192.168.0.3 (192.168.0.3) 56(84) bytes of data.
 64 bytes from 192.168.0.3: icmp_req=1 ttl=64 time=0.233 ms

shell@hct6580_weg_c_m:/ $ ping -v -c 1 192.168.88.1
PING 192.168.88.1 (192.168.88.1) 56(84) bytes of data.
64 bytes from 192.168.88.1: icmp_seq=1 ttl=64 time=157 ms

--- 192.168.88.1 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 157.430/157.430/157.430/0.000 ms

shell@hct6580_weg_c_m:/ $ ping -v -c 1 192.168.88.88
PING 192.168.88.88 (192.168.88.88) 56(84) bytes of data.
From 192.168.88.152: icmp_seq=1 Destination Host Unreachable

--- 192.168.88.88 ping statistics ---
1 packets transmitted, 0 received, +1 errors, 100% packet loss, time 0ms

1|shell@hct6580_weg_c_m:/ $ ping -v -c 1 192.168.88.21
PING 192.168.88.21 (192.168.88.21) 56(84) bytes of data.

--- 192.168.88.21 ping statistics ---
1 packets transmitted, 0 received, 100% packet loss, time 0ms

DEVICE EXIST BUT IT DON'T ACCEPT PING ( This is not found in ur lib)

1|shell@hct6580_weg_c_m:/ $ ping -v -c 1 192.168.88.21
PING 192.168.88.21 (192.168.88.21) 56(84) bytes of data.

--- 192.168.88.21 ping statistics ---
1 packets transmitted, 0 received, 100% packet loss, time 0ms
Here it returns nothing as message from ping binary... But they may return "no answer yet from icmp_seq" if you increase the ping count to 2 : "-c 2" . Those type of devices should be marked as Online in the LAN.