Adding initial commit.

app/build.gradle

@@ -0,0 +1,40 @@
+plugins {
+    alias(libs.plugins.android.application)
+}
+
+android {
+    namespace 'me.sergiotarxz.bedrockstation'
+    compileSdk 34
+
+    defaultConfig {
+        applicationId "me.sergiotarxz.bedrockstation"
+        minSdk 33 
+        targetSdk 34
+        versionCode 1
+        versionName "1.0"
+
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_17
+        targetCompatibility JavaVersion.VERSION_17
+    }
+}
+
+dependencies {
+
+    implementation libs.appcompat
+    implementation libs.material
+    implementation libs.activity
+    implementation libs.constraintlayout
+    testImplementation libs.junit
+    androidTestImplementation libs.ext.junit
+    androidTestImplementation libs.espresso.core
+}

app/proguard-rules.pro

@@ -0,0 +1,21 @@
+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile

app/src/androidTest/java/me/sergiotarxz/bedrockstation/ExampleInstrumentedTest.java

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+package me.sergiotarxz.bedrockstation;
+
+import android.content.Context;
+
+import androidx.test.platform.app.InstrumentationRegistry;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.*;
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+@RunWith(AndroidJUnit4.class)
+public class ExampleInstrumentedTest {
+    @Test
+    public void useAppContext() {
+        // Context of the app under test.
+        Context appContext = InstrumentationRegistry.getInstrumentation().getTargetContext();
+        assertEquals("me.sergiotarxz.bedrockstation", appContext.getPackageName());
+    }
+}

app/src/main/AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools">
+
+    <uses-permission android:name="android.permission.POST_NOTIFICATIONS"/>
+    <uses-permission android:name="android.permission.FOREGROUND_SERVICE"/>
+    <uses-permission android:name="android.permission.INTERNET" />
+    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
+    <application
+        android:allowBackup="true"
+        android:dataExtractionRules="@xml/data_extraction_rules"
+        android:fullBackupContent="@xml/backup_rules"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/Theme.BedrockStation"
+        tools:targetApi="31">
+
+        <activity
+            android:name=".MainActivity"
+            android:exported="true">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+        <service
+            android:name=".ProxyService"
+            android:foregroundServiceType="dataSync"
+            android:exported="false"/>
+    </application>
+
+</manifest>

app/src/main/java/me/sergiotarxz/bedrockstation/DB.java

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+package me.sergiotarxz.bedrockstation;
+
+import android.database.sqlite.SQLiteDatabase;
+import android.database.sqlite.SQLiteOpenHelper;
+import android.content.Context;
+
+public class DB extends SQLiteOpenHelper {
+    public static final String DATABASE_NAME = "bedrockstation.sqlite3";
+        
+    public static final String[] MIGRATIONS = {
+       "CREATE TABLE options (\n"
+       + "id INTEGER PRIMARY KEY,\n"
+       + "key TEXT UNIQUE,\n"
+       + "value TEXT\n"
+       + ");",
+       "INSERT OR IGNORE INTO options(key, value) VALUES(\"host_cache\", \"192.168.2.1\");",
+       "INSERT OR IGNORE INTO options(key, value) VALUES(\"port_cache\", \"19132\");",
+    };
+
+    public DB(Context context) {
+        super(context, DATABASE_NAME, null, MIGRATIONS.length);
+    }
+
+    private SQLiteDatabase db = null;
+
+    public SQLiteDatabase getInstance() {
+        if (db == null) {
+            db = this.getWritableDatabase();
+        }
+        return db;
+    }
+
+    public void onCreate(SQLiteDatabase db) {
+        onUpgrade(db, 0, MIGRATIONS.length);
+    }
+
+    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
+        if (oldVersion > newVersion) {
+            throw new RuntimeException("Downgrade of DB not supported");
+        }
+        for (int i = oldVersion; i < newVersion; i++) {
+            db.execSQL(MIGRATIONS[i]); 
+        }
+    }
+
+    public void onDowngrade(SQLiteDatabase db, int oldVersion, int newVersion) {
+        throw new RuntimeException("Downgrade of DB not supported");
+    }
+}

app/src/main/java/me/sergiotarxz/bedrockstation/DBContract.java

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+package me.sergiotarxz.bedrockstation;
+import android.provider.BaseColumns;
+
+public final class DBContract {
+    private DBContract() {}
+
+    public static class Options implements BaseColumns {
+        public static final String TABLE_NAME = "options";
+        public static final String COLUMN_NAME_ID = "id";
+        public static final String COLUMN_NAME_KEY = "key";
+        public static final String COLUMN_NAME_VALUE = "value";
+    }
+}

app/src/main/java/me/sergiotarxz/bedrockstation/MainActivity.java

@@ -0,0 +1,196 @@
+package me.sergiotarxz.bedrockstation;
+
+import android.os.Bundle;
+
+import androidx.activity.EdgeToEdge;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.core.graphics.Insets;
+import androidx.core.view.ViewCompat;
+import androidx.core.view.WindowInsetsCompat;
+import android.widget.LinearLayout;
+import android.widget.Button;
+import android.widget.EditText;
+import android.widget.TextView;
+import android.view.View;
+import android.text.Editable;
+import android.text.TextWatcher;
+import android.view.Gravity;
+import android.database.sqlite.SQLiteDatabase;
+import android.view.ViewGroup.LayoutParams;
+import android.content.Intent;
+import me.sergiotarxz.bedrockstation.ProxyService;
+import me.sergiotarxz.bedrockstation.Options;
+import me.sergiotarxz.bedrockstation.DB;
+import android.widget.Toast;
+import androidx.activity.result.contract.ActivityResultContracts.RequestPermission;
+import androidx.activity.result.ActivityResultLauncher;
+import android.app.NotificationManager;
+import android.content.ServiceConnection;
+import android.content.Context;
+import android.content.ComponentName;
+import android.os.IBinder;
+
+public class MainActivity extends AppCompatActivity {
+    interface Lambda {
+	void l();
+    };
+
+    ProxyService proxyService = null;
+    boolean mBound = false;
+    private Button button;
+    boolean serverStarted = false;
+    private EditText hostEditText = null;
+    private EditText portEditText = null;
+
+    private ServiceConnection connection = new ServiceConnection() {
+	@Override
+	public void onServiceConnected(ComponentName className,
+		IBinder service) {
+	    ProxyService.LocalBinder binder = (ProxyService.LocalBinder) service;
+	    proxyService = binder.getService();
+            if (proxyService.isServerStarted()) {
+                onStartProxyService();
+            } else {
+                onFinishProxyService();
+            }
+            proxyService.setActivity(MainActivity.this);
+	    mBound = true;
+	}
+
+	@Override
+	public void onServiceDisconnected(ComponentName arg0) {
+	    mBound = false;
+            onFinishProxyService();
+	}
+    };
+
+    private void onChangeEditText(EditText edit, Lambda l) {
+	edit.addTextChangedListener(new TextWatcher() {
+		
+            public void afterTextChanged(Editable s) {
+		l.l();
+            }
+
+            public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
+
+            public void onTextChanged(CharSequence s, int start, int before, int count) {}
+	});
+    }
+
+    
+    private void finishServiceProxy() {
+        Intent intent = new Intent(this, ProxyService.class);
+        intent.setAction(ProxyService.Action.END);
+        this.startForegroundService(intent);
+    }
+
+    private void startServiceProxy() {
+        Intent intent = new Intent(this, ProxyService.class);
+        this.startForegroundService(intent);
+    }
+
+    @Override
+    protected void onStart() {
+        super.onStart();
+        Intent intent = new Intent(this, ProxyService.class);
+        bindService(intent, connection, Context.BIND_AUTO_CREATE);
+    }
+
+    @Override
+    protected void onStop() {
+        super.onStop();
+        unbindService(connection);
+
+    }
+
+    public void onStartProxyService() {
+        button.setText("Finish Proxy");
+        serverStarted = true;
+    }
+
+    public void onFinishProxyService() {
+        button.setText("Start Proxy");
+        serverStarted = false;
+    }
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        EdgeToEdge.enable(this);
+        LinearLayout layout = new LinearLayout(this);
+	layout.setOrientation(LinearLayout.VERTICAL);
+        layout.setLayoutParams(new LinearLayout.LayoutParams(
+            LayoutParams.MATCH_PARENT,
+            LayoutParams.MATCH_PARENT));
+	layout.setGravity(Gravity.CENTER);
+        layout.setId(1);
+        SQLiteDatabase db = new DB(this).getInstance();
+        Options options = new Options(db);
+        button = new Button(this);
+        button.setOnClickListener( (View view) -> {
+            if(!serverStarted) {
+                if (!getSystemService(NotificationManager.class)
+                    .areNotificationsEnabled()) {
+                    requestPermissionLauncher.launch(android.Manifest.permission.POST_NOTIFICATIONS);
+                    return;
+                }
+                startServiceProxy();
+                return;
+            }
+            finishServiceProxy();
+        });
+        if (serverStarted) {
+            button.setText("Finish Proxy");
+        } else {
+            button.setText("Start Proxy");
+        }
+        LayoutParams buttonLayoutParams = new LinearLayout.LayoutParams(
+            LayoutParams.WRAP_CONTENT,
+            LayoutParams.WRAP_CONTENT);
+        LayoutParams editTextLayoutParams = new LinearLayout.LayoutParams(
+            LayoutParams.WRAP_CONTENT,
+            LayoutParams.WRAP_CONTENT);
+	editTextLayoutParams.width = 500;
+        button.setLayoutParams(buttonLayoutParams);
+	LinearLayout hostLayout = new LinearLayout(this);
+	hostLayout.setGravity(Gravity.CENTER);
+	TextView hostIndicator = new TextView(this);
+	hostIndicator.setText("IP: ");
+        hostEditText = new EditText(this);
+        hostEditText.setText(options.get(Options.HOST_CACHE));
+	onChangeEditText(hostEditText, () -> {
+	    String text = hostEditText.getText().toString();
+            options.set(Options.HOST_CACHE, text);
+	});
+        hostEditText.setLayoutParams(editTextLayoutParams);
+	hostLayout.addView(hostIndicator);
+	hostLayout.addView(hostEditText);
+	LinearLayout portLayout = new LinearLayout(this);
+	portLayout.setGravity(Gravity.CENTER);
+	TextView portIndicator = new TextView(this);
+        portEditText = new EditText(this);
+       	onChangeEditText(portEditText, () -> {
+	    String text = portEditText.getText().toString();
+            options.set(Options.PORT_CACHE, text);
+	});
+        portEditText.setLayoutParams(editTextLayoutParams);
+	portIndicator.setText("Port: ");
+        portEditText.setText(options.get(Options.PORT_CACHE));
+	portLayout.addView(portIndicator);
+	portLayout.addView(portEditText);
+        layout.addView(hostLayout);
+        layout.addView(portLayout);
+        layout.addView(button);
+        setContentView(layout);
+    }
+
+    private ActivityResultLauncher<String> requestPermissionLauncher =
+        registerForActivityResult(new RequestPermission(), isGranted -> {
+            if (isGranted) {
+                startServiceProxy();
+            } else {
+                Toast.makeText(this, "You need notifications to run the proxy", Toast.LENGTH_LONG).show();
+            }
+    });
+
+}

app/src/main/java/me/sergiotarxz/bedrockstation/Options.java

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+package me.sergiotarxz.bedrockstation;
+
+import me.sergiotarxz.bedrockstation.DBContract;
+import android.database.Cursor;
+import android.database.sqlite.SQLiteDatabase;
+import android.content.ContentValues;
+
+public class Options {
+    public static final String PORT_CACHE = "port_cache";
+    public static final String HOST_CACHE = "host_cache";
+
+    private SQLiteDatabase db = null;
+    public Options(SQLiteDatabase db) {
+        this.db = db;
+    }
+
+    public String set(String key, String value) {
+        ContentValues contentValues = new ContentValues();
+        contentValues.put(DBContract.Options.COLUMN_NAME_KEY, key);
+        contentValues.put(DBContract.Options.COLUMN_NAME_VALUE, value);
+        db.replace(DBContract.Options.TABLE_NAME, null, contentValues);
+        return value;
+    }
+
+    public String get(String key) {
+        String[] projection = {
+            DBContract.Options.COLUMN_NAME_VALUE
+        };
+        String selection = DBContract.Options.COLUMN_NAME_KEY + " = ?";
+        String[] selectionArgs = { key };
+        Cursor cursor = db.query(
+            DBContract.Options.TABLE_NAME,
+            projection,
+            selection,
+            selectionArgs,
+            null,
+            null,
+            ""
+        );
+        if (!cursor.moveToNext()) {
+            return "";
+        }
+        String result = cursor.getString(
+            cursor.getColumnIndexOrThrow(
+                DBContract.Options.COLUMN_NAME_VALUE
+            )
+        );
+        cursor.close();
+        return result;
+    }
+}

app/src/main/java/me/sergiotarxz/bedrockstation/ProxyService.java

@@ -0,0 +1,155 @@
+package me.sergiotarxz.bedrockstation;
+
+import android.util.Log;
+import androidx.core.app.ServiceCompat;
+import androidx.core.app.NotificationCompat;
+import android.content.pm.ServiceInfo;
+import android.os.Build;
+import android.os.Binder;
+import android.os.IBinder;
+import android.app.Service;
+import android.app.Notification;
+import android.content.Intent;
+import android.app.NotificationManager;
+import android.app.NotificationChannel;
+import java.net.InetSocketAddress;
+import android.app.PendingIntent;
+import android.database.sqlite.SQLiteDatabase;
+import me.sergiotarxz.bedrockstation.DB;
+import android.widget.Toast;
+import android.os.StrictMode;
+
+import me.sergiotarxz.bedrockstation.ProxyThread;
+
+public class ProxyService extends Service {
+
+    static String CHANNEL_ID = "sthaoes";
+    Thread proxyThread = null;
+
+    public class LocalBinder extends Binder {
+        ProxyService getService() {
+            return ProxyService.this;
+        }
+    }
+
+    private final IBinder binder = new LocalBinder();
+
+    private MainActivity activity = null;
+
+    public void setActivity(MainActivity activity) {
+        this.activity = activity;
+    }
+
+    @Override
+    public IBinder onBind(Intent intent) {
+        return binder;
+    }
+
+    static ProxyService instance = null;
+    static public ProxyService getInstance() {
+        return instance;
+    }
+
+    public class Action {
+        static final String START = "start";
+        static final String END = "end";
+    }
+
+    @Override
+    public void onCreate() {
+        NotificationManager notificationManager = getSystemService(NotificationManager.class);
+        NotificationChannel channel = new NotificationChannel(CHANNEL_ID, "BedrockProxy", NotificationManager.IMPORTANCE_DEFAULT);
+        notificationManager.createNotificationChannel(channel);
+        instance = this;
+    }
+
+    private void startForeground() {
+        try {
+            Intent intent = new Intent(this, ProxyService.class);
+            intent.setAction(Action.END);
+            PendingIntent pendingIntent = PendingIntent.getForegroundService(this, 100, intent, PendingIntent.FLAG_IMMUTABLE);
+            Notification notification = new NotificationCompat.Builder(this, CHANNEL_ID)
+                .setContentTitle("Bedrock Proxy is running")
+                .setContentText("Press this notification to kill")
+                .setSmallIcon(R.drawable.ic_launcher_foreground)
+                .setContentIntent(pendingIntent)
+                .setOngoing(true)
+                .build();
+            int type = 0;
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {
+                type = ServiceInfo.FOREGROUND_SERVICE_TYPE_DATA_SYNC;
+            }
+            this.startForeground(
+                1,
+                notification,
+                type
+            );
+        } catch (Exception e) {
+            throw new RuntimeException(e.toString());
+        }
+    }
+
+    @Override
+    public int onStartCommand(Intent intent,
+        int flags,
+        int startId) {
+        if (intent.getAction() == null) {
+            intent.setAction(Action.START);
+        }
+        if (intent.getAction() == Action.START) {
+            startForeground();
+            startServer();
+        }
+        if (intent.getAction() == Action.END) {
+            Log.w("bedrockstation", "HOLA");
+            finishServer();
+            stopForeground(true);
+        }
+        return super.onStartCommand(intent, flags, startId);
+    }
+
+    public boolean isServerStarted() {
+        return proxyThread != null && proxyThread.isAlive();
+    }
+
+    public void finishServer() {
+        if (isServerStarted()) {
+            ((ProxyThread) proxyThread).terminate();
+            try {
+                proxyThread.join();
+                activity.onFinishProxyService();
+            } catch (Exception e) {
+                throw new RuntimeException(e.toString());
+            }
+        }
+    }
+
+    private void createServer(InetSocketAddress address) {
+        try {
+            proxyThread = new ProxyThread(address);
+        } catch (Exception e) {
+            throw new RuntimeException(e.toString());
+        }
+    }
+
+    public void startServer() {
+        if (!isServerStarted()) {
+            Options options = new Options(new DB(this).getInstance());
+            String host = options.get(Options.HOST_CACHE);
+            
+            int port = 0;
+            try {
+                port = Integer.parseInt(options.get(Options.PORT_CACHE));
+            } catch (Exception e) {
+                Log.e("bedrockstation", Log.getStackTraceString(e));
+                Toast.makeText(this, "Port is not a number", Toast.LENGTH_LONG).show();
+                return;
+            }
+            StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
+            StrictMode.setThreadPolicy(policy);
+            createServer(new InetSocketAddress(host, port));
+            proxyThread.start();
+            activity.onStartProxyService();
+        }
+    }
+}

app/src/main/java/me/sergiotarxz/bedrockstation/ProxyThread.java

@@ -0,0 +1,133 @@
+package me.sergiotarxz.bedrockstation;
+
+import java.nio.channels.DatagramChannel;
+import java.nio.channels.Selector;
+import java.nio.channels.SelectableChannel;
+import java.util.IdentityHashMap;
+import java.util.HashMap;
+import java.net.InetSocketAddress;
+import java.net.SocketAddress;
+import java.nio.channels.SelectionKey;
+import java.nio.ByteBuffer;
+import java.util.Set;
+import java.net.StandardSocketOptions;
+import java.util.Iterator;
+import java.lang.Thread;
+import android.util.Log;
+
+interface Lambda {
+    void l() throws Exception;
+};
+
+public class ProxyThread extends Thread
+{
+    IdentityHashMap<Object, Lambda> objectToFunc;
+    HashMap<String, DatagramChannel> addressToServer;
+    Selector selector;
+    DatagramChannel server;
+    InetSocketAddress remoteServerAddress;
+
+
+    private volatile boolean running = true;
+
+    public void terminate() {
+        running = false;
+    }
+
+    public ProxyThread(InetSocketAddress remoteServerAddress) throws Exception {
+        this.remoteServerAddress = remoteServerAddress;
+        objectToFunc = new IdentityHashMap<Object, Lambda>();
+        addressToServer = new HashMap<String, DatagramChannel>();
+        selector = Selector.open();
+    }
+
+    @Override
+    public void run() {
+        try {
+            server = createServer();
+            while (running) {
+                selector.select(1000);
+                Set<SelectionKey> selectedKeys = selector.selectedKeys();
+                Iterator<SelectionKey> iter = selectedKeys.iterator();
+                while (iter.hasNext()) {
+                    SelectionKey key = iter.next();
+                    SelectableChannel channel = key.channel();
+                    if (!(channel instanceof DatagramChannel)) {
+                        iter.remove();
+                        continue;
+                    }
+                    DatagramChannel dchannel = (DatagramChannel) channel;
+                    if (key.isReadable()) {
+                        objectToFunc.get(dchannel).l();
+                    }
+                    iter.remove();
+                }
+            }
+            server.close();
+        } catch (Exception e) {
+            throw new RuntimeException(Log.getStackTraceString(e));
+        }
+    }
+
+    public DatagramChannel createServer() throws Exception {
+            DatagramChannel datagramChannel = DatagramChannel.open();
+            InetSocketAddress serverAddress = new InetSocketAddress("0.0.0.0", remoteServerAddress.getPort());
+            datagramChannel.bind(serverAddress);
+            datagramChannel.setOption(StandardSocketOptions.SO_REUSEADDR, true);
+            datagramChannel.configureBlocking(false);
+            objectToFunc.put(datagramChannel, () -> {
+                onServerCanRead(datagramChannel);
+            });
+            datagramChannel.register(selector, SelectionKey.OP_READ);
+            System.out.println("Redirecting UDP connections from (" + "0.0.0.0" + ":" + remoteServerAddress.getPort() + ") to (" + remoteServerAddress.getHostString() + ":" + remoteServerAddress.getPort() + ")");
+            return datagramChannel;
+    }
+
+    public DatagramChannel createClientFinalServer(SocketAddress finalClientAddress) throws Exception {
+            DatagramChannel datagramChannel = DatagramChannel.open();
+            InetSocketAddress serverAddress = remoteServerAddress;
+            datagramChannel.bind(null);
+            datagramChannel.configureBlocking(false);
+            objectToFunc.put(datagramChannel, () -> {
+                onClientFinalServerCanRead(datagramChannel, finalClientAddress);
+            });
+            datagramChannel.register(selector, SelectionKey.OP_READ);
+            return datagramChannel;
+    }
+
+    public void onClientFinalServerCanRead(
+                DatagramChannel finalServerConnection,
+                SocketAddress finalClientAddress
+    ) throws Exception {
+        ByteBuffer buffer = ByteBuffer.allocate(1024);
+        finalServerConnection.receive(buffer);
+        byte[] array = buffer.array();
+        int size = buffer.capacity() - (buffer.capacity() - buffer.position());
+        server.send(ByteBuffer.wrap(array, 0, size), finalClientAddress);
+    }
+
+    public void onServerCanRead(
+                DatagramChannel server
+    ) throws Exception {
+        ByteBuffer buffer = ByteBuffer.allocate(1024);
+        SocketAddress clientAddress = server.receive(buffer);
+        int size = buffer.capacity() - (buffer.capacity() - buffer.position());
+        byte[] array = buffer.array();
+        getClientFinalConnection(clientAddress)
+            .send(ByteBuffer.wrap(array, 0, size), new InetSocketAddress("192.168.2.1", 19132));
+    }
+
+    public DatagramChannel getClientFinalConnection( SocketAddress clientAddress ) throws Exception {
+        DatagramChannel connection = addressToServer.get(clientAddress.toString());
+        if (connection != null) {
+            return connection;
+        }
+        connection = createClientFinalServer(clientAddress);
+        if (clientAddress instanceof InetSocketAddress) {
+            InetSocketAddress clientAddressInet = (InetSocketAddress) clientAddress;
+            System.out.println("New UDP Client at (" + clientAddressInet.getHostString() + ":" + clientAddressInet.getPort() + ")");
+        }
+        addressToServer.put(clientAddress.toString(), connection);
+        return connection;
+    }
+}

app/src/main/res/drawable/ic_launcher_background.xml

@@ -0,0 +1,170 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path
+        android:fillColor="#3DDC84"
+        android:pathData="M0,0h108v108h-108z" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M9,0L9,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,0L19,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,0L29,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,0L39,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,0L49,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,0L59,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,0L69,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,0L79,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M89,0L89,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M99,0L99,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,9L108,9"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,19L108,19"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,29L108,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,39L108,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,49L108,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,59L108,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,69L108,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,79L108,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,89L108,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,99L108,99"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,29L89,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,39L89,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,49L89,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,59L89,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,69L89,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,79L89,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,19L29,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,19L39,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,19L49,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,19L59,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,19L69,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,19L79,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+</vector>

app/src/main/res/drawable/ic_launcher_foreground.xml

@@ -0,0 +1,30 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:aapt="http://schemas.android.com/aapt"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path android:pathData="M31,63.928c0,0 6.4,-11 12.1,-13.1c7.2,-2.6 26,-1.4 26,-1.4l38.1,38.1L107,108.928l-32,-1L31,63.928z">
+        <aapt:attr name="android:fillColor">
+            <gradient
+                android:endX="85.84757"
+                android:endY="92.4963"
+                android:startX="42.9492"
+                android:startY="49.59793"
+                android:type="linear">
+                <item
+                    android:color="#44000000"
+                    android:offset="0.0" />
+                <item
+                    android:color="#00000000"
+                    android:offset="1.0" />
+            </gradient>
+        </aapt:attr>
+    </path>
+    <path
+        android:fillColor="#FFFFFF"
+        android:fillType="nonZero"
+        android:pathData="M65.3,45.828l3.8,-6.6c0.2,-0.4 0.1,-0.9 -0.3,-1.1c-0.4,-0.2 -0.9,-0.1 -1.1,0.3l-3.9,6.7c-6.3,-2.8 -13.4,-2.8 -19.7,0l-3.9,-6.7c-0.2,-0.4 -0.7,-0.5 -1.1,-0.3C38.8,38.328 38.7,38.828 38.9,39.228l3.8,6.6C36.2,49.428 31.7,56.028 31,63.928h46C76.3,56.028 71.8,49.428 65.3,45.828zM43.4,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2c-0.3,-0.7 -0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C45.3,56.528 44.5,57.328 43.4,57.328L43.4,57.328zM64.6,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2s-0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C66.5,56.528 65.6,57.328 64.6,57.328L64.6,57.328z"
+        android:strokeWidth="1"
+        android:strokeColor="#00000000" />
+</vector>

app/src/main/res/layout/activity_main.xml

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/main"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".MainActivity">
+
+    <TextView
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="Hello World!"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/mipmap-anydpi/ic_launcher.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+    <monochrome android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>

app/src/main/res/mipmap-anydpi/ic_launcher_round.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+    <monochrome android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>

app/src/main/res/values-night/themes.xml

@@ -0,0 +1,7 @@
+<resources xmlns:tools="http://schemas.android.com/tools">
+    <!-- Base application theme. -->
+    <style name="Base.Theme.BedrockStation" parent="Theme.Material3.DayNight.NoActionBar">
+        <!-- Customize your dark theme here. -->
+        <!-- <item name="colorPrimary">@color/my_dark_primary</item> -->
+    </style>
+</resources>

app/src/main/res/values/colors.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="black">#FF000000</color>
+    <color name="white">#FFFFFFFF</color>
+</resources>

app/src/main/res/values/strings.xml

@@ -0,0 +1,3 @@
+<resources>
+    <string name="app_name">BedrockStation</string>
+</resources>

app/src/main/res/values/themes.xml

@@ -0,0 +1,9 @@
+<resources xmlns:tools="http://schemas.android.com/tools">
+    <!-- Base application theme. -->
+    <style name="Base.Theme.BedrockStation" parent="Theme.Material3.DayNight.NoActionBar">
+        <!-- Customize your light theme here. -->
+        <!-- <item name="colorPrimary">@color/my_light_primary</item> -->
+    </style>
+
+    <style name="Theme.BedrockStation" parent="Base.Theme.BedrockStation" />
+</resources>

app/src/main/res/xml/backup_rules.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?><!--
+   Sample backup rules file; uncomment and customize as necessary.
+   See https://developer.android.com/guide/topics/data/autobackup
+   for details.
+   Note: This file is ignored for devices older that API 31
+   See https://developer.android.com/about/versions/12/backup-restore
+-->
+<full-backup-content>
+    <!--
+   <include domain="sharedpref" path="."/>
+   <exclude domain="sharedpref" path="device.xml"/>
+-->
+</full-backup-content>

app/src/main/res/xml/data_extraction_rules.xml

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?><!--
+   Sample data extraction rules file; uncomment and customize as necessary.
+   See https://developer.android.com/about/versions/12/backup-restore#xml-changes
+   for details.
+-->
+<data-extraction-rules>
+    <cloud-backup>
+        <!-- TODO: Use <include> and <exclude> to control what is backed up.
+        <include .../>
+        <exclude .../>
+        -->
+    </cloud-backup>
+    <!--
+    <device-transfer>
+        <include .../>
+        <exclude .../>
+    </device-transfer>
+    -->
+</data-extraction-rules>

app/src/test/java/me/sergiotarxz/bedrockstation/ExampleUnitTest.java

@@ -0,0 +1,17 @@
+package me.sergiotarxz.bedrockstation;
+
+import org.junit.Test;
+
+import static org.junit.Assert.*;
+
+/**
+ * Example local unit test, which will execute on the development machine (host).
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+public class ExampleUnitTest {
+    @Test
+    public void addition_isCorrect() {
+        assertEquals(4, 2 + 2);
+    }
+}

build.gradle

@@ -0,0 +1,4 @@
+// Top-level build file where you can add configuration options common to all sub-projects/modules.
+plugins {
+alias(libs.plugins.android.application) apply false
+}

gradle.properties

@@ -0,0 +1,21 @@
+# Project-wide Gradle settings.
+# IDE (e.g. Android Studio) users:
+# Gradle settings configured through the IDE *will override*
+# any settings specified in this file.
+# For more details on how to configure your build environment visit
+# http://www.gradle.org/docs/current/userguide/build_environment.html
+# Specifies the JVM arguments used for the daemon process.
+# The setting is particularly useful for tweaking memory settings.
+org.gradle.jvmargs=-Xmx2048m -Dfile.encoding=UTF-8
+# When configured, Gradle will run in incubating parallel mode.
+# This option should only be used with decoupled projects. For more details, visit
+# https://developer.android.com/r/tools/gradle-multi-project-decoupled-projects
+# org.gradle.parallel=true
+# AndroidX package structure to make it clearer which packages are bundled with the
+# Android operating system, and which are packaged with your app's APK
+# https://developer.android.com/topic/libraries/support-library/androidx-rn
+android.useAndroidX=true
+# Enables namespacing of each library's R class so that its R class includes only the
+# resources declared in the library itself and none from the library's dependencies,
+# thereby reducing the size of the R class for that library
+android.nonTransitiveRClass=true

gradle/libs.versions.toml

@@ -0,0 +1,22 @@
+[versions]
+agp = "8.5.1"
+junit = "4.13.2"
+junitVersion = "1.1.5"
+espressoCore = "3.5.1"
+appcompat = "1.6.1"
+material = "1.10.0"
+activity = "1.8.0"
+constraintlayout = "2.1.4"
+
+[libraries]
+junit = { group = "junit", name = "junit", version.ref = "junit" }
+ext-junit = { group = "androidx.test.ext", name = "junit", version.ref = "junitVersion" }
+espresso-core = { group = "androidx.test.espresso", name = "espresso-core", version.ref = "espressoCore" }
+appcompat = { group = "androidx.appcompat", name = "appcompat", version.ref = "appcompat" }
+material = { group = "com.google.android.material", name = "material", version.ref = "material" }
+activity = { group = "androidx.activity", name = "activity", version.ref = "activity" }
+constraintlayout = { group = "androidx.constraintlayout", name = "constraintlayout", version.ref = "constraintlayout" }
+
+[plugins]
+android-application = { id = "com.android.application", version.ref = "agp" }
+

settings.gradle

@@ -0,0 +1,23 @@
+pluginManagement {
+    repositories {
+        google {
+            content {
+                includeGroupByRegex("com\\.android.*")
+                includeGroupByRegex("com\\.google.*")
+                includeGroupByRegex("androidx.*")
+            }
+        }
+        mavenCentral()
+        gradlePluginPortal()
+    }
+}
+dependencyResolutionManagement {
+    repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
+    repositories {
+        google()
+        mavenCentral()
+    }
+}
+
+rootProject.name = "BedrockStation"
+include ':app'