123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146 |
- package com.example.ueberwachungssystem;
- import android.annotation.SuppressLint;
- import android.widget.Toast;
-
- import androidx.annotation.NonNull;
-
- import com.example.ueberwachungssystem.Detection.DetectionReport;
- import com.example.ueberwachungssystem.Detection.Detector;
- import com.example.ueberwachungssystem.Detection.DetectorService;
-
- import java.io.IOException;
- import java.net.DatagramPacket;
- import java.net.DatagramSocket;
- import java.net.Inet4Address;
- import java.net.InetAddress;
- import java.net.NetworkInterface;
- import java.net.SocketException;
- import java.net.UnknownHostException;
- import java.text.SimpleDateFormat;
- import java.util.Date;
- import java.util.Enumeration;
-
- public class WifiCommunication {
- //private final MainActivity mainActivity;
- private final InetAddress address;
- private final int port;
-
- private String messageToSend;
- volatile private boolean send;
- private final DatagramSocket socket;
- volatile private boolean running;
-
- private OnConnectionListener listener;
- @SuppressLint("SetTextI18n")
- public WifiCommunication(int port) {
- //this.mainActivity = mainActivity;
- this.port = port;
- try {
- socket = new DatagramSocket(this.port);
- socket.setBroadcast(true);
- address = InetAddress.getByName("255.255.255.255"); //100.82.255.255
- running = true;
- send = false;
- new ReceiveThread().start();
- new SendThread().start();
- } catch (SocketException | UnknownHostException e) {
- throw new RuntimeException(e);
- }
- //Toast.makeText(mainActivity.getApplicationContext(),"Communication running", Toast.LENGTH_SHORT).show();
- //mainActivity.runOnUiThread(() -> mainActivity.tvMessages.setText("Communication running"));
- }
-
- public interface OnConnectionListener {
- void onConnection(StringBuffer data);
- }
- public void setOnConnectionListener(@NonNull OnConnectionListener listener) {
- this.listener = listener;
- }
-
- public void sendWifiData(StringBuffer wifiMessage) {
- if (listener != null) {
- listener.onConnection(wifiMessage);
- }
- }
-
- private class ReceiveThread extends Thread {
- private StringBuffer rxStringBuffer = new StringBuffer();
- private String rxString="";
- private String previousRxString = "";
-
- @Override
- public void run() {
- try {
- do {
- byte[] receiveData = new byte[512];
- DatagramPacket rxPacket = new DatagramPacket(receiveData, receiveData.length);
- socket.receive(rxPacket);
- rxString = new String(receiveData, 0, rxPacket.getLength());
- String[] splitrxString = rxString.split(",");
- if(!previousRxString.equals(rxString) && splitrxString[0].equals("1") && splitrxString.length==7) {
- rxStringBuffer.append(rxString).append("\n");
- sendWifiData(rxStringBuffer);
- //mainActivity.runOnUiThread(() -> mainActivity.tvMessages.setText(rxStringBuffer));
- previousRxString = rxString;
- }
- } while (running);
- }
- catch (IOException e) {
- e.printStackTrace();
- }
- }
- }
- private class SendThread extends Thread {
- private int tmpCnt = 0;
- @Override
- public void run() {
- try {
- do {
- if(send)
- {
- send = false;
- SimpleDateFormat formatter = new SimpleDateFormat("HH:mm:ss");
- Date curDate = new Date(System.currentTimeMillis());
- String str = formatter.format(curDate);
- byte[] send_Data = new byte[512];
- String txString = ("1," +str+ ",Gruppe2," + getLocalIpAddress() + ",An,Video," +messageToSend);
- send_Data = txString.getBytes();
-
- DatagramPacket txPacket = new DatagramPacket(send_Data, txString.length(), address, port);
-
- for(int i = 0; i < 300; i++) {
- socket.send(txPacket);
- }
- }
- } while (running);
- } catch (IOException e) {
- e.printStackTrace();
- }
- }
- }
- public static String getLocalIpAddress() {
- try {
- for (Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces(); en.hasMoreElements();) {
- NetworkInterface networkInterface = (NetworkInterface) ((Enumeration<?>) en).nextElement();
- for (Enumeration<InetAddress> addresses = networkInterface.getInetAddresses(); addresses.hasMoreElements();) {
- InetAddress inetAddress = addresses.nextElement();
- if (!inetAddress.isLoopbackAddress() && inetAddress instanceof Inet4Address) {
- return inetAddress.getHostAddress();
- }
- }
- }
- } catch (SocketException ex) {
- ex.printStackTrace();
- }
- return null;
- }
-
- public void sendTrue(String message){
- send = true;
- messageToSend = message;
- }
- public void stopCommunication() {
- running = false;
- socket.close();
- }
- }
|