init

WebRTCControlled/.gitignore

@@ -0,0 +1,2 @@
+/build/
+/.idea/

WebRTCControlled/app/build.gradle

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+plugins {
+    id 'com.android.application'
+}
+
+android {
+    namespace 'com.tt.controlled'
+    compileSdk 34
+
+    defaultConfig {
+        applicationId "com.tt.controlled"
+        minSdk 24
+        targetSdk 34
+        versionCode 1
+        versionName "1.0"
+    }
+
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+
+    buildFeatures {
+        dataBinding true
+        buildConfig true
+        aidl true
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+
+}
+
+dependencies {
+    implementation 'androidx.appcompat:appcompat:1.6.1'
+    implementation 'com.google.android.material:material:1.11.0'
+    implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
+    testImplementation 'junit:junit:4.13.2'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.3'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
+
+    // WebRTC
+    implementation 'io.github.nicholasgasior:webrtc-android:1.0.0'
+    // OkHttp for WebSocket
+    implementation 'com.squareup.okhttp3:okhttp:4.12.0'
+    // Gson for JSON
+    implementation 'com.google.code.gson:gson:2.10.1'
+}

WebRTCControlled/app/proguard-rules.pro

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+# Add project specific ProGuard rules here.

WebRTCControlled/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">
+
+    <uses-permission android:name="android.permission.INTERNET" />
+    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
+    <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
+    <uses-permission android:name="android.permission.FOREGROUND_SERVICE_MEDIA_PROJECTION" />
+    <uses-permission android:name="android.permission.POST_NOTIFICATIONS" />
+    <uses-permission android:name="android.permission.INJECT_EVENTS" />
+
+    <application
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:supportsRtl="true"
+        android:theme="@style/Theme.MaterialComponents.DayNight">
+
+        <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=".service.ScreenCaptureService"
+            android:exported="false"
+            android:foregroundServiceType="mediaProjection" />
+
+    </application>
+
+</manifest>

WebRTCControlled/app/src/main/java/com/tt/controlled/MainActivity.java

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+package com.tt.controlled;
+
+import android.Manifest;
+import android.content.Context;
+import android.content.Intent;
+import android.content.pm.PackageManager;
+import android.media.projection.MediaProjectionManager;
+import android.os.Build;
+import android.os.Bundle;
+import android.provider.Settings;
+import android.util.Log;
+import android.view.View;
+import android.widget.Button;
+import android.widget.EditText;
+import android.widget.TextView;
+import android.widget.Toast;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.core.app.ActivityCompat;
+import androidx.core.content.ContextCompat;
+
+import com.tt.controlled.service.ScreenCaptureService;
+
+import java.util.UUID;
+
+public class MainActivity extends AppCompatActivity {
+
+    private static final String TAG = "ControlledMain";
+    private static final int REQUEST_MEDIA_PROJECTION = 1001;
+    private static final int REQUEST_NOTIFICATION_PERMISSION = 1002;
+
+    private EditText etServerUrl;
+    private EditText etDeviceId;
+    private Button btnStart;
+    private Button btnStop;
+    private TextView tvStatus;
+
+    private boolean isServiceRunning = false;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+
+        etServerUrl = findViewById(R.id.et_server_url);
+        etDeviceId = findViewById(R.id.et_device_id);
+        btnStart = findViewById(R.id.btn_start);
+        btnStop = findViewById(R.id.btn_stop);
+        tvStatus = findViewById(R.id.tv_status);
+
+        // 默认服务器地址
+        etServerUrl.setText("ws://192.168.1.100:8080/ws/signal");
+        // 生成设备ID
+        etDeviceId.setText("controlled_" + UUID.randomUUID().toString().substring(0, 8));
+
+        btnStart.setOnClickListener(v -> startScreenSharing());
+        btnStop.setOnClickListener(v -> stopScreenSharing());
+
+        updateUI(false);
+    }
+
+    private void startScreenSharing() {
+        // 检查通知权限 (Android 13+)
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU) {
+            if (ContextCompat.checkSelfPermission(this, Manifest.permission.POST_NOTIFICATIONS)
+                    != PackageManager.PERMISSION_GRANTED) {
+                ActivityCompat.requestPermissions(this,
+                        new String[]{Manifest.permission.POST_NOTIFICATIONS},
+                        REQUEST_NOTIFICATION_PERMISSION);
+                return;
+            }
+        }
+
+        // 请求屏幕录制权限
+        MediaProjectionManager projectionManager =
+                (MediaProjectionManager) getSystemService(Context.MEDIA_PROJECTION_SERVICE);
+        startActivityForResult(projectionManager.createScreenCaptureIntent(), REQUEST_MEDIA_PROJECTION);
+    }
+
+    @Override
+    protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
+        super.onActivityResult(requestCode, resultCode, data);
+
+        if (requestCode == REQUEST_MEDIA_PROJECTION) {
+            if (resultCode == RESULT_OK && data != null) {
+                Intent serviceIntent = new Intent(this, ScreenCaptureService.class);
+                serviceIntent.putExtra(ScreenCaptureService.EXTRA_RESULT_CODE, resultCode);
+                serviceIntent.putExtra(ScreenCaptureService.EXTRA_RESULT_DATA, data);
+                serviceIntent.putExtra(ScreenCaptureService.EXTRA_SERVER_URL, etServerUrl.getText().toString());
+                serviceIntent.putExtra(ScreenCaptureService.EXTRA_DEVICE_ID, etDeviceId.getText().toString());
+
+                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+                    startForegroundService(serviceIntent);
+                } else {
+                    startService(serviceIntent);
+                }
+
+                updateUI(true);
+                Toast.makeText(this, "屏幕共享已启动", Toast.LENGTH_SHORT).show();
+            } else {
+                Toast.makeText(this, "屏幕录制权限被拒绝", Toast.LENGTH_SHORT).show();
+            }
+        }
+    }
+
+    @Override
+    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
+        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
+        if (requestCode == REQUEST_NOTIFICATION_PERMISSION) {
+            if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
+                startScreenSharing();
+            } else {
+                Toast.makeText(this, "需要通知权限才能运行", Toast.LENGTH_SHORT).show();
+            }
+        }
+    }
+
+    private void stopScreenSharing() {
+        Intent serviceIntent = new Intent(this, ScreenCaptureService.class);
+        stopService(serviceIntent);
+        updateUI(false);
+        Toast.makeText(this, "屏幕共享已停止", Toast.LENGTH_SHORT).show();
+    }
+
+    private void updateUI(boolean running) {
+        isServiceRunning = running;
+        btnStart.setEnabled(!running);
+        btnStop.setEnabled(running);
+        etServerUrl.setEnabled(!running);
+        etDeviceId.setEnabled(!running);
+        tvStatus.setText(running ? "状态: 运行中" : "状态: 已停止");
+    }
+}

WebRTCControlled/app/src/main/java/com/tt/controlled/input/InputCommandHandler.java

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+package com.tt.controlled.input;
+
+import android.os.SystemClock;
+import android.util.Log;
+import android.view.InputDevice;
+import android.view.InputEvent;
+import android.view.MotionEvent;
+
+import com.google.gson.Gson;
+import com.google.gson.JsonObject;
+
+import java.lang.reflect.Method;
+
+/**
+ * 处理控制端发来的输入指令（触摸、按键）。
+ * 注意：注入输入事件需要 INJECT_EVENTS 权限，
+ * 通常需要系统签名或ADB授权才能使用。
+ */
+public class InputCommandHandler {
+
+    private static final String TAG = "InputCommandHandler";
+    private final Gson gson = new Gson();
+    private final int screenWidth;
+    private final int screenHeight;
+
+    public InputCommandHandler(int screenWidth, int screenHeight) {
+        this.screenWidth = screenWidth;
+        this.screenHeight = screenHeight;
+    }
+
+    public void handleCommand(String commandJson) {
+        try {
+            JsonObject command = gson.fromJson(commandJson, JsonObject.class);
+            String action = command.get("action").getAsString();
+
+            switch (action) {
+                case "TOUCH":
+                    handleTouch(command);
+                    break;
+                case "KEY":
+                    handleKey(command);
+                    break;
+                case "SWIPE":
+                    handleSwipe(command);
+                    break;
+                default:
+                    Log.w(TAG, "Unknown action: " + action);
+            }
+        } catch (Exception e) {
+            Log.e(TAG, "Error handling command: " + e.getMessage(), e);
+        }
+    }
+
+    private void handleTouch(JsonObject command) {
+        float relX = command.get("x").getAsFloat();
+        float relY = command.get("y").getAsFloat();
+        int x = (int) (relX * screenWidth);
+        int y = (int) (relY * screenHeight);
+
+        Log.d(TAG, "Touch at: " + x + ", " + y);
+        injectTap(x, y);
+    }
+
+    private void handleKey(JsonObject command) {
+        int keyCode = command.get("keyCode").getAsInt();
+        Log.d(TAG, "Key press: " + keyCode);
+        // 使用 Runtime.exec 模拟按键（需要root或ADB权限）
+        try {
+            Runtime.getRuntime().exec("input keyevent " + keyCode);
+        } catch (Exception e) {
+            Log.e(TAG, "Error injecting key event", e);
+        }
+    }
+
+    private void handleSwipe(JsonObject command) {
+        float relX1 = command.get("x1").getAsFloat();
+        float relY1 = command.get("y1").getAsFloat();
+        float relX2 = command.get("x2").getAsFloat();
+        float relY2 = command.get("y2").getAsFloat();
+        long duration = command.has("duration") ? command.get("duration").getAsLong() : 300;
+
+        int x1 = (int) (relX1 * screenWidth);
+        int y1 = (int) (relY1 * screenHeight);
+        int x2 = (int) (relX2 * screenWidth);
+        int y2 = (int) (relY2 * screenHeight);
+
+        Log.d(TAG, "Swipe from (" + x1 + "," + y1 + ") to (" + x2 + "," + y2 + ")");
+        injectSwipe(x1, y1, x2, y2, duration);
+    }
+
+    private void injectTap(int x, int y) {
+        try {
+            Runtime.getRuntime().exec("input tap " + x + " " + y);
+        } catch (Exception e) {
+            Log.e(TAG, "Error injecting tap event", e);
+        }
+    }
+
+    private void injectSwipe(int x1, int y1, int x2, int y2, long duration) {
+        try {
+            Runtime.getRuntime().exec("input swipe " + x1 + " " + y1 + " " + x2 + " " + y2 + " " + duration);
+        } catch (Exception e) {
+            Log.e(TAG, "Error injecting swipe event", e);
+        }
+    }
+}

WebRTCControlled/app/src/main/java/com/tt/controlled/service/ScreenCaptureService.java

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+package com.tt.controlled.service;
+
+import android.app.Activity;
+import android.app.Notification;
+import android.app.NotificationChannel;
+import android.app.NotificationManager;
+import android.app.PendingIntent;
+import android.app.Service;
+import android.content.Context;
+import android.content.Intent;
+import android.content.pm.ServiceInfo;
+import android.media.projection.MediaProjection;
+import android.media.projection.MediaProjectionManager;
+import android.os.Build;
+import android.os.IBinder;
+import android.util.DisplayMetrics;
+import android.util.Log;
+import android.view.WindowManager;
+
+import androidx.annotation.Nullable;
+import androidx.core.app.NotificationCompat;
+
+import com.tt.controlled.MainActivity;
+import com.tt.controlled.input.InputCommandHandler;
+import com.tt.controlled.signaling.SignalMessage;
+import com.tt.controlled.signaling.WebSocketClient;
+import com.tt.controlled.webrtc.WebRtcClient;
+
+import com.google.gson.Gson;
+import com.google.gson.JsonObject;
+
+import org.webrtc.EglBase;
+import org.webrtc.IceCandidate;
+import org.webrtc.ScreenCapturerAndroid;
+import org.webrtc.SessionDescription;
+
+public class ScreenCaptureService extends Service {
+
+    private static final String TAG = "ScreenCaptureService";
+    private static final String CHANNEL_ID = "screen_capture_channel";
+    private static final int NOTIFICATION_ID = 1;
+
+    public static final String EXTRA_RESULT_CODE = "result_code";
+    public static final String EXTRA_RESULT_DATA = "result_data";
+    public static final String EXTRA_SERVER_URL = "server_url";
+    public static final String EXTRA_DEVICE_ID = "device_id";
+
+    private MediaProjection mediaProjection;
+    private ScreenCapturerAndroid screenCapturer;
+    private WebSocketClient wsClient;
+    private WebRtcClient webRtcClient;
+    private InputCommandHandler inputHandler;
+    private EglBase eglBase;
+    private final Gson gson = new Gson();
+
+    @Override
+    public void onCreate() {
+        super.onCreate();
+        createNotificationChannel();
+    }
+
+    @Override
+    public int onStartCommand(Intent intent, int flags, int startId) {
+        if (intent == null) {
+            stopSelf();
+            return START_NOT_STICKY;
+        }
+
+        // 创建前台通知
+        Notification notification = createNotification();
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
+            startForeground(NOTIFICATION_ID, notification, ServiceInfo.FOREGROUND_SERVICE_TYPE_MEDIA_PROJECTION);
+        } else {
+            startForeground(NOTIFICATION_ID, notification);
+        }
+
+        int resultCode = intent.getIntExtra(EXTRA_RESULT_CODE, Activity.RESULT_CANCELED);
+        Intent resultData = intent.getParcelableExtra(EXTRA_RESULT_DATA);
+        String serverUrl = intent.getStringExtra(EXTRA_SERVER_URL);
+        String deviceId = intent.getStringExtra(EXTRA_DEVICE_ID);
+
+        if (resultCode != Activity.RESULT_OK || resultData == null || serverUrl == null || deviceId == null) {
+            Log.e(TAG, "Invalid service parameters");
+            stopSelf();
+            return START_NOT_STICKY;
+        }
+
+        // 获取屏幕尺寸
+        WindowManager wm = (WindowManager) getSystemService(Context.WINDOW_SERVICE);
+        DisplayMetrics dm = new DisplayMetrics();
+        wm.getDefaultDisplay().getMetrics(dm);
+        inputHandler = new InputCommandHandler(dm.widthPixels, dm.heightPixels);
+
+        startScreenCapture(resultCode, resultData, serverUrl, deviceId);
+        return START_NOT_STICKY;
+    }
+
+    @Nullable
+    @Override
+    public IBinder onBind(Intent intent) {
+        return null;
+    }
+
+    @Override
+    public void onDestroy() {
+        super.onDestroy();
+        if (screenCapturer != null) {
+            screenCapturer.stopCapture();
+            screenCapturer.dispose();
+        }
+        if (webRtcClient != null) {
+            webRtcClient.close();
+        }
+        if (wsClient != null) {
+            wsClient.disconnect();
+        }
+        if (eglBase != null) {
+            eglBase.release();
+        }
+        if (mediaProjection != null) {
+            mediaProjection.stop();
+        }
+    }
+
+    private void startScreenCapture(int resultCode, Intent resultData, String serverUrl, String deviceId) {
+        // 初始化 MediaProjection
+        MediaProjectionManager projectionManager =
+                (MediaProjectionManager) getSystemService(Context.MEDIA_PROJECTION_SERVICE);
+        mediaProjection = projectionManager.getMediaProjection(resultCode, resultData);
+
+        // 初始化 EGL
+        eglBase = EglBase.create();
+
+        // 初始化 WebSocket
+        wsClient = new WebSocketClient(serverUrl, deviceId);
+        wsClient.setListener(new WebSocketClient.SignalListener() {
+            @Override
+            public void onConnected() {
+                Log.i(TAG, "Connected to signal server");
+            }
+
+            @Override
+            public void onDisconnected() {
+                Log.i(TAG, "Disconnected from signal server");
+            }
+
+            @Override
+            public void onError(String error) {
+                Log.e(TAG, "WebSocket error: " + error);
+            }
+
+            @Override
+            public void onMessage(SignalMessage message) {
+                handleSignalMessage(message);
+            }
+        });
+        wsClient.connect();
+
+        // 初始化 WebRTC
+        webRtcClient = new WebRtcClient(this, wsClient, deviceId);
+        webRtcClient.initialize(eglBase);
+        webRtcClient.setInputCallback(commandJson -> inputHandler.handleCommand(commandJson));
+
+        // 初始化屏幕捕获
+        screenCapturer = new ScreenCapturerAndroid(resultData, new ScreenCapturerAndroid.Callback() {
+            @Override
+            public void onCapturerStarted(boolean success) {
+                Log.d(TAG, "Screen capture started: " + success);
+            }
+
+            @Override
+            public void onCapturerStopped() {
+                Log.d(TAG, "Screen capture stopped");
+            }
+        });
+
+        webRtcClient.setVideoCapturer(screenCapturer);
+    }
+
+    private void handleSignalMessage(SignalMessage message) {
+        String type = message.getType();
+        if (type == null) return;
+
+        switch (type.toUpperCase()) {
+            case "OFFER":
+                handleOffer(message);
+                break;
+            case "ICE_CANDIDATE":
+                handleIceCandidate(message);
+                break;
+        }
+    }
+
+    private void handleOffer(SignalMessage message) {
+        String offerSdp = null;
+        try {
+            JsonObject payload = gson.fromJson(message.getPayload(), JsonObject.class);
+            offerSdp = payload.get("sdp").getAsString();
+        } catch (Exception e) {
+            Log.e(TAG, "Error parsing offer SDP", e);
+            return;
+        }
+
+        String controllerId = message.getFromDeviceId();
+        webRtcClient.createPeerConnectionAndAnswer(offerSdp, controllerId);
+    }
+
+    private void handleIceCandidate(SignalMessage message) {
+        try {
+            JsonObject payload = gson.fromJson(message.getPayload(), JsonObject.class);
+            String sdpMid = payload.get("sdpMid").getAsString();
+            int sdpMLineIndex = payload.get("sdpMLineIndex").getAsInt();
+            String candidate = payload.get("candidate").getAsString();
+
+            IceCandidate iceCandidate = new IceCandidate(sdpMid, sdpMLineIndex, candidate);
+            webRtcClient.addIceCandidate(iceCandidate);
+        } catch (Exception e) {
+            Log.e(TAG, "Error parsing ICE candidate", e);
+        }
+    }
+
+    private Notification createNotification() {
+        Intent notificationIntent = new Intent(this, MainActivity.class);
+        PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, notificationIntent,
+                PendingIntent.FLAG_UPDATE_CURRENT | PendingIntent.FLAG_IMMUTABLE);
+
+        return new NotificationCompat.Builder(this, CHANNEL_ID)
+                .setContentTitle("屏幕共享中")
+                .setContentText("远程控制服务正在运行")
+                .setSmallIcon(android.R.drawable.ic_menu_camera)
+                .setContentIntent(pendingIntent)
+                .build();
+    }
+
+    private void createNotificationChannel() {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+            NotificationChannel channel = new NotificationChannel(
+                    CHANNEL_ID,
+                    "屏幕共享服务",
+                    NotificationManager.IMPORTANCE_LOW);
+            channel.setDescription("远程控制屏幕采集前台服务");
+            NotificationManager manager = getSystemService(NotificationManager.class);
+            manager.createNotificationChannel(channel);
+        }
+    }
+}

WebRTCControlled/app/src/main/java/com/tt/controlled/signaling/SignalMessage.java

@@ -0,0 +1,34 @@
+package com.tt.controlled.signaling;
+
+public class SignalMessage {
+
+    private String type;
+    private String fromDeviceId;
+    private String toDeviceId;
+    private String deviceType;
+    private String payload;
+
+    public SignalMessage() {}
+
+    public SignalMessage(String type, String fromDeviceId, String toDeviceId, String payload) {
+        this.type = type;
+        this.fromDeviceId = fromDeviceId;
+        this.toDeviceId = toDeviceId;
+        this.payload = payload;
+    }
+
+    public String getType() { return type; }
+    public void setType(String type) { this.type = type; }
+
+    public String getFromDeviceId() { return fromDeviceId; }
+    public void setFromDeviceId(String fromDeviceId) { this.fromDeviceId = fromDeviceId; }
+
+    public String getToDeviceId() { return toDeviceId; }
+    public void setToDeviceId(String toDeviceId) { this.toDeviceId = toDeviceId; }
+
+    public String getDeviceType() { return deviceType; }
+    public void setDeviceType(String deviceType) { this.deviceType = deviceType; }
+
+    public String getPayload() { return payload; }
+    public void setPayload(String payload) { this.payload = payload; }
+}

WebRTCControlled/app/src/main/java/com/tt/controlled/signaling/WebSocketClient.java

@@ -0,0 +1,117 @@
+package com.tt.controlled.signaling;
+
+import android.os.Handler;
+import android.os.Looper;
+import android.util.Log;
+
+import com.google.gson.Gson;
+
+import okhttp3.OkHttpClient;
+import okhttp3.Request;
+import okhttp3.Response;
+import okhttp3.WebSocket;
+import okhttp3.WebSocketListener;
+
+public class WebSocketClient {
+
+    private static final String TAG = "WebSocketClient";
+
+    private final String serverUrl;
+    private final String deviceId;
+    private final Gson gson = new Gson();
+    private final Handler mainHandler = new Handler(Looper.getMainLooper());
+    private OkHttpClient client;
+    private WebSocket webSocket;
+    private SignalListener listener;
+
+    public interface SignalListener {
+        void onConnected();
+        void onDisconnected();
+        void onError(String error);
+        void onMessage(SignalMessage message);
+    }
+
+    public WebSocketClient(String serverUrl, String deviceId) {
+        this.serverUrl = serverUrl;
+        this.deviceId = deviceId;
+    }
+
+    public void setListener(SignalListener listener) {
+        this.listener = listener;
+    }
+
+    public void connect() {
+        client = new OkHttpClient.Builder().build();
+        Request request = new Request.Builder().url(serverUrl).build();
+
+        webSocket = client.newWebSocket(request, new WebSocketListener() {
+            @Override
+            public void onOpen(WebSocket ws, Response response) {
+                Log.i(TAG, "WebSocket connected");
+                // 发送注册消息
+                registerDevice();
+                mainHandler.post(() -> {
+                    if (listener != null) listener.onConnected();
+                });
+            }
+
+            @Override
+            public void onMessage(WebSocket ws, String text) {
+                Log.d(TAG, "Received: " + text);
+                try {
+                    SignalMessage message = gson.fromJson(text, SignalMessage.class);
+                    mainHandler.post(() -> {
+                        if (listener != null) listener.onMessage(message);
+                    });
+                } catch (Exception e) {
+                    Log.e(TAG, "Error parsing message", e);
+                }
+            }
+
+            @Override
+            public void onClosed(WebSocket ws, int code, String reason) {
+                Log.i(TAG, "WebSocket closed: " + reason);
+                mainHandler.post(() -> {
+                    if (listener != null) listener.onDisconnected();
+                });
+            }
+
+            @Override
+            public void onFailure(WebSocket ws, Throwable t, Response response) {
+                Log.e(TAG, "WebSocket error: " + t.getMessage(), t);
+                mainHandler.post(() -> {
+                    if (listener != null) listener.onError(t.getMessage());
+                });
+            }
+        });
+    }
+
+    public void sendMessage(SignalMessage message) {
+        if (webSocket != null) {
+            String json = gson.toJson(message);
+            Log.d(TAG, "Sending: " + json);
+            webSocket.send(json);
+        }
+    }
+
+    public void disconnect() {
+        if (webSocket != null) {
+            webSocket.close(1000, "Disconnecting");
+        }
+        if (client != null) {
+            client.dispatcher().executorService().shutdown();
+        }
+    }
+
+    private void registerDevice() {
+        SignalMessage registerMsg = new SignalMessage();
+        registerMsg.setType("REGISTER");
+        registerMsg.setFromDeviceId(deviceId);
+        registerMsg.setDeviceType("CONTROLLED");
+        sendMessage(registerMsg);
+    }
+
+    public boolean isConnected() {
+        return webSocket != null;
+    }
+}

WebRTCControlled/app/src/main/java/com/tt/controlled/webrtc/AppSdpObserver.java

@@ -0,0 +1,48 @@
+package com.tt.controlled.webrtc;
+
+import android.util.Log;
+
+import org.webrtc.SdpObserver;
+import org.webrtc.SessionDescription;
+
+public class AppSdpObserver implements SdpObserver {
+
+    private static final String TAG = "AppSdpObserver";
+
+    private final SdpEventListener listener;
+
+    public interface SdpEventListener {
+        void onCreateSuccess(SessionDescription sdp);
+        void onSetSuccess();
+        void onCreateFailure(String error);
+        void onSetFailure(String error);
+    }
+
+    public AppSdpObserver(SdpEventListener listener) {
+        this.listener = listener;
+    }
+
+    @Override
+    public void onCreateSuccess(SessionDescription sdp) {
+        Log.d(TAG, "SDP created: " + sdp.type);
+        if (listener != null) listener.onCreateSuccess(sdp);
+    }
+
+    @Override
+    public void onSetSuccess() {
+        Log.d(TAG, "SDP set success");
+        if (listener != null) listener.onSetSuccess();
+    }
+
+    @Override
+    public void onCreateFailure(String error) {
+        Log.e(TAG, "SDP create failure: " + error);
+        if (listener != null) listener.onCreateFailure(error);
+    }
+
+    @Override
+    public void onSetFailure(String error) {
+        Log.e(TAG, "SDP set failure: " + error);
+        if (listener != null) listener.onSetFailure(error);
+    }
+}

WebRTCControlled/app/src/main/java/com/tt/controlled/webrtc/PeerObserver.java

@@ -0,0 +1,77 @@
+package com.tt.controlled.webrtc;
+
+import org.webrtc.DataChannel;
+import org.webrtc.IceCandidate;
+import org.webrtc.MediaStream;
+import org.webrtc.PeerConnection;
+import org.webrtc.RtpReceiver;
+
+public class PeerObserver implements PeerConnection.Observer {
+
+    private static final String TAG = "PeerObserver";
+
+    private final PeerEventListener listener;
+
+    public interface PeerEventListener {
+        void onIceCandidate(IceCandidate candidate);
+        void onIceConnectionChange(PeerConnection.IceConnectionState newState);
+        void onDataChannel(DataChannel dataChannel);
+        void onAddStream(MediaStream stream);
+        void onRemoveStream(MediaStream stream);
+    }
+
+    public PeerObserver(PeerEventListener listener) {
+        this.listener = listener;
+    }
+
+    @Override
+    public void onSignalingChange(PeerConnection.SignalingState newState) {
+        android.util.Log.d(TAG, "Signaling state: " + newState);
+    }
+
+    @Override
+    public void onIceConnectionChange(PeerConnection.IceConnectionState newState) {
+        android.util.Log.d(TAG, "ICE connection state: " + newState);
+        if (listener != null) listener.onIceConnectionChange(newState);
+    }
+
+    @Override
+    public void onIceConnectionReceivingChange(boolean receiving) {}
+
+    @Override
+    public void onIceGatheringChange(PeerConnection.IceGatheringState newState) {
+        android.util.Log.d(TAG, "ICE gathering state: " + newState);
+    }
+
+    @Override
+    public void onIceCandidate(IceCandidate candidate) {
+        if (listener != null) listener.onIceCandidate(candidate);
+    }
+
+    @Override
+    public void onIceCandidatesRemoved(IceCandidate[] candidates) {}
+
+    @Override
+    public void onAddStream(MediaStream stream) {
+        if (listener != null) listener.onAddStream(stream);
+    }
+
+    @Override
+    public void onRemoveStream(MediaStream stream) {
+        if (listener != null) listener.onRemoveStream(stream);
+    }
+
+    @Override
+    public void onDataChannel(DataChannel dataChannel) {
+        android.util.Log.d(TAG, "Remote data channel received");
+        if (listener != null) listener.onDataChannel(dataChannel);
+    }
+
+    @Override
+    public void onRenegotiationNeeded() {
+        android.util.Log.d(TAG, "Renegotiation needed");
+    }
+
+    @Override
+    public void onAddTrack(RtpReceiver receiver, MediaStream[] streams) {}
+}

WebRTCControlled/app/src/main/java/com/tt/controlled/webrtc/WebRtcClient.java

@@ -0,0 +1,254 @@
+package com.tt.controlled.webrtc;
+
+import android.content.Context;
+import android.util.Log;
+
+import com.google.gson.Gson;
+import com.google.gson.JsonObject;
+import com.tt.controlled.signaling.SignalMessage;
+import com.tt.controlled.signaling.WebSocketClient;
+
+import org.webrtc.DataChannel;
+import org.webrtc.DefaultVideoEncoderFactory;
+import org.webrtc.EglBase;
+import org.webrtc.IceCandidate;
+import org.webrtc.MediaConstraints;
+import org.webrtc.MediaStream;
+import org.webrtc.PeerConnection;
+import org.webrtc.PeerConnectionFactory;
+import org.webrtc.SessionDescription;
+import org.webrtc.VideoCapturer;
+import org.webrtc.VideoSource;
+import org.webrtc.VideoTrack;
+
+import java.nio.ByteBuffer;
+import java.nio.charset.StandardCharsets;
+import java.util.ArrayList;
+import java.util.List;
+
+public class WebRtcClient {
+
+    private static final String TAG = "WebRtcClient";
+    private static final String VIDEO_TRACK_ID = "screen_track";
+    private static final String STREAM_ID = "screen_stream";
+    private static final String DATA_CHANNEL_LABEL = "control_channel";
+
+    private final Context context;
+    private final WebSocketClient wsClient;
+    private final String deviceId;
+    private final Gson gson = new Gson();
+
+    private PeerConnectionFactory peerConnectionFactory;
+    private PeerConnection peerConnection;
+    private DataChannel dataChannel;
+    private VideoTrack videoTrack;
+    private EglBase eglBase;
+    private String currentControllerId;
+
+    private InputCommandCallback inputCallback;
+
+    public interface InputCommandCallback {
+        void onCommandReceived(String commandJson);
+    }
+
+    public WebRtcClient(Context context, WebSocketClient wsClient, String deviceId) {
+        this.context = context;
+        this.wsClient = wsClient;
+        this.deviceId = deviceId;
+    }
+
+    public void setInputCallback(InputCommandCallback callback) {
+        this.inputCallback = callback;
+    }
+
+    public void initialize(EglBase eglBase) {
+        this.eglBase = eglBase;
+        PeerConnectionFactory.InitializationOptions initOptions =
+                PeerConnectionFactory.InitializationOptions.builder(context)
+                        .setFieldTrials("WebRTC-H264HighProfile/Enabled/")
+                        .createInitializationOptions();
+        PeerConnectionFactory.initialize(initOptions);
+
+        PeerConnectionFactory.Options options = new PeerConnectionFactory.Options();
+        peerConnectionFactory = PeerConnectionFactory.builder()
+                .setOptions(options)
+                .setVideoEncoderFactory(new DefaultVideoEncoderFactory(eglBase.getEglBaseContext(), true, true))
+                .createPeerConnectionFactory();
+    }
+
+    public void setVideoCapturer(VideoCapturer capturer) {
+        VideoSource videoSource = peerConnectionFactory.createVideoSource(false);
+        capturer.initialize(null, context, videoSource.getCapturerObserver());
+        capturer.startCapture(1280, 720, 30);
+
+        videoTrack = peerConnectionFactory.createVideoTrack(VIDEO_TRACK_ID, videoSource);
+    }
+
+    public void createPeerConnectionAndAnswer(String offerSdp, String controllerId) {
+        this.currentControllerId = controllerId;
+
+        PeerConnection.RTCConfiguration config = new PeerConnection.RTCConfiguration(new ArrayList<>());
+        config.sdpSemantics = PeerConnection.SdpSemantics.UNIFIED_PLAN;
+
+        PeerObserver peerObserver = new PeerObserver(new PeerObserver.PeerEventListener() {
+            @Override
+            public void onIceCandidate(IceCandidate candidate) {
+                sendIceCandidate(candidate, controllerId);
+            }
+
+            @Override
+            public void onIceConnectionChange(PeerConnection.IceConnectionState newState) {
+                Log.d(TAG, "ICE connection state: " + newState);
+            }
+
+            @Override
+            public void onDataChannel(DataChannel dc) {
+                Log.d(TAG, "Data channel received: " + dc.label());
+                handleDataChannel(dc);
+            }
+
+            @Override
+            public void onAddStream(MediaStream stream) {}
+
+            @Override
+            public void onRemoveStream(MediaStream stream) {}
+        });
+
+        peerConnection = peerConnectionFactory.createPeerConnection(config, peerObserver);
+
+        if (videoTrack != null) {
+            MediaStream stream = peerConnectionFactory.createLocalMediaStream(STREAM_ID);
+            stream.addTrack(videoTrack);
+            peerConnection.addStream(stream);
+        }
+
+        // 创建本地 DataChannel
+        DataChannel.Init dcInit = new DataChannel.Init();
+        dcInit.ordered = true;
+        dataChannel = peerConnection.createDataChannel(DATA_CHANNEL_LABEL, dcInit);
+        handleDataChannel(dataChannel);
+
+        // 设置远端 SDP (Offer)
+        SessionDescription remoteSdp = new SessionDescription(SessionDescription.Type.OFFER, offerSdp);
+        peerConnection.setRemoteDescription(new AppSdpObserver(new AppSdpObserver.SdpEventListener() {
+            @Override
+            public void onCreateSuccess(SessionDescription sdp) {}
+
+            @Override
+            public void onSetSuccess() {
+                // 创建 Answer
+                MediaConstraints constraints = new MediaConstraints();
+                peerConnection.createAnswer(new AppSdpObserver(new AppSdpObserver.SdpEventListener() {
+                    @Override
+                    public void onCreateSuccess(SessionDescription sdp) {
+                        peerConnection.setLocalDescription(new AppSdpObserver(new AppSdpObserver.SdpEventListener() {
+                            @Override
+                            public void onCreateSuccess(SessionDescription s) {}
+                            @Override
+                            public void onSetSuccess() {
+                                sendAnswer(sdp.description, controllerId);
+                            }
+                            @Override
+                            public void onCreateFailure(String error) {}
+                            @Override
+                            public void onSetFailure(String error) {}
+                        }), sdp);
+                    }
+
+                    @Override
+                    public void onSetSuccess() {}
+                    @Override
+                    public void onCreateFailure(String error) {}
+                    @Override
+                    public void onSetFailure(String error) {}
+                }), constraints);
+            }
+
+            @Override
+            public void onCreateFailure(String error) {}
+            @Override
+            public void onSetFailure(String error) {}
+        }), remoteSdp);
+    }
+
+    public void addIceCandidate(IceCandidate candidate) {
+        if (peerConnection != null) {
+            peerConnection.addIceCandidate(candidate);
+        }
+    }
+
+    public void sendInputResponse(String responseJson) {
+        if (dataChannel != null && dataChannel.state() == DataChannel.State.OPEN) {
+            DataChannel.Buffer buffer = new DataChannel.Buffer(
+                    ByteBuffer.wrap(responseJson.getBytes(StandardCharsets.UTF_8)), false);
+            dataChannel.send(buffer);
+        }
+    }
+
+    public void close() {
+        if (dataChannel != null) {
+            dataChannel.close();
+            dataChannel.dispose();
+        }
+        if (peerConnection != null) {
+            peerConnection.close();
+            peerConnection.dispose();
+        }
+        if (peerConnectionFactory != null) {
+            peerConnectionFactory.dispose();
+        }
+    }
+
+    private void handleDataChannel(DataChannel dc) {
+        dc.registerObserver(new DataChannel.Observer() {
+            @Override
+            public void onBufferedAmountChange(long previousAmount) {}
+
+            @Override
+            public void onStateChange() {
+                Log.d(TAG, "DataChannel state: " + dc.state());
+            }
+
+            @Override
+            public void onMessage(DataChannel.Buffer buffer) {
+                byte[] data = new byte[buffer.data.remaining()];
+                buffer.data.get(data);
+                String message = new String(data, StandardCharsets.UTF_8);
+                Log.d(TAG, "DataChannel message: " + message);
+                if (inputCallback != null) {
+                    inputCallback.onCommandReceived(message);
+                }
+            }
+        });
+    }
+
+    private void sendAnswer(String sdp, String controllerId) {
+        SignalMessage msg = new SignalMessage();
+        msg.setType("ANSWER");
+        msg.setFromDeviceId(deviceId);
+        msg.setToDeviceId(controllerId);
+        msg.setDeviceType("CONTROLLED");
+
+        JsonObject payload = new JsonObject();
+        payload.addProperty("sdp", sdp);
+        msg.setPayload(payload.toString());
+
+        wsClient.sendMessage(msg);
+    }
+
+    private void sendIceCandidate(IceCandidate candidate, String controllerId) {
+        SignalMessage msg = new SignalMessage();
+        msg.setType("ICE_CANDIDATE");
+        msg.setFromDeviceId(deviceId);
+        msg.setToDeviceId(controllerId);
+        msg.setDeviceType("CONTROLLED");
+
+        JsonObject payload = new JsonObject();
+        payload.addProperty("sdpMid", candidate.sdpMid);
+        payload.addProperty("sdpMLineIndex", candidate.sdpMLineIndex);
+        payload.addProperty("candidate", candidate.sdp);
+        msg.setPayload(payload.toString());
+
+        wsClient.sendMessage(msg);
+    }
+}

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

@@ -0,0 +1,67 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    android:padding="24dp">
+
+    <TextView
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="WebRTC 被控端"
+        android:textSize="24sp"
+        android:textStyle="bold"
+        android:layout_marginBottom="24dp"/>
+
+    <TextView
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="信令服务器地址:"
+        android:textSize="14sp"/>
+
+    <EditText
+        android:id="@+id/et_server_url"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:inputType="textUri"
+        android:hint="ws://192.168.1.100:8080/ws/signal"
+        android:layout_marginBottom="16dp"/>
+
+    <TextView
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="设备ID:"
+        android:textSize="14sp"/>
+
+    <EditText
+        android:id="@+id/et_device_id"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:inputType="text"
+        android:hint="设备ID"
+        android:layout_marginBottom="24dp"/>
+
+    <TextView
+        android:id="@+id/tv_status"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="状态: 已停止"
+        android:textSize="16sp"
+        android:textStyle="bold"
+        android:layout_marginBottom="24dp"/>
+
+    <Button
+        android:id="@+id/btn_start"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="开始屏幕共享"
+        android:layout_marginBottom="8dp"/>
+
+    <Button
+        android:id="@+id/btn_stop"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="停止屏幕共享"
+        android:enabled="false"/>
+
+</LinearLayout>

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

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <string name="app_name">WebRTC被控端</string>
+</resources>

WebRTCControlled/build.gradle

@@ -0,0 +1,4 @@
+// Top-level build file
+plugins {
+    id 'com.android.application' version '8.1.4' apply false
+}

WebRTCControlled/gradle.properties

@@ -0,0 +1,3 @@
+android.useAndroidX=true
+android.enableJetifier=true
+org.gradle.jvmargs=-Xmx2048m -Dfile.encoding=UTF-8

WebRTCControlled/gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,6 @@
+#Tue Mar 16 15:27:10 CST 2021
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.13-all.zip

WebRTCControlled/gradlew

@@ -0,0 +1,172 @@
+#!/usr/bin/env sh
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+    echo "$*"
+}
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=$((i+1))
+    done
+    case $i in
+        (0) set -- ;;
+        (1) set -- "$args0" ;;
+        (2) set -- "$args0" "$args1" ;;
+        (3) set -- "$args0" "$args1" "$args2" ;;
+        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
+}
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
+
+exec "$JAVACMD" "$@"

WebRTCControlled/gradlew.bat

@@ -0,0 +1,84 @@
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS=
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto init
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto init
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:init
+@rem Get command-line arguments, handling Windows variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega

WebRTCControlled/local.properties

@@ -0,0 +1,8 @@
+## This file must *NOT* be checked into Version Control Systems,
+# as it contains information specific to your local configuration.
+#
+# Location of the SDK. This is only used by Gradle.
+# For customization when using a Version Control System, please read the
+# header note.
+#Sat Jul 11 15:36:39 CST 2026
+sdk.dir=F\:\\AndroidSDK

WebRTCControlled/settings.gradle

@@ -0,0 +1,18 @@
+pluginManagement {
+    repositories {
+        google()
+        mavenCentral()
+        gradlePluginPortal()
+    }
+}
+
+dependencyResolutionManagement {
+    repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
+    repositories {
+        google()
+        mavenCentral()
+    }
+}
+
+rootProject.name = "WebRTCControlled"
+include ':app'

WebRTCController/.gitignore

@@ -0,0 +1,2 @@
+/build/
+/.idea/

WebRTCController/app/build.gradle

@@ -0,0 +1,43 @@
+plugins {
+    id 'com.android.application'
+}
+
+android {
+    namespace 'com.tt.controller'
+    compileSdk 34
+
+    defaultConfig {
+        applicationId "com.tt.controller"
+        minSdk 24
+        targetSdk 34
+        versionCode 1
+        versionName "1.0"
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+}
+
+dependencies {
+    implementation 'androidx.appcompat:appcompat:1.6.1'
+    implementation 'com.google.android.material:material:1.11.0'
+    implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
+
+    // WebRTC
+    implementation 'io.github.nicholasgasior:webrtc-android:1.0.0'
+
+    // OkHttp for WebSocket
+    implementation 'com.squareup.okhttp3:okhttp:4.12.0'
+
+    // Gson for JSON
+    implementation 'com.google.code.gson:gson:2.10.1'
+}

WebRTCController/app/proguard-rules.pro

@@ -0,0 +1 @@
+# Add project specific ProGuard rules here.

WebRTCController/app/src/main/AndroidManifest.xml

@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <uses-permission android:name="android.permission.INTERNET" />
+    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
+
+    <application
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:supportsRtl="true"
+        android:theme="@style/Theme.MaterialComponents.DayNight">
+
+        <activity
+            android:name=".MainActivity"
+            android:exported="true"
+            android:screenOrientation="landscape">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+
+    </application>
+
+</manifest>

WebRTCController/app/src/main/java/com/tt/controller/MainActivity.java

@@ -0,0 +1,267 @@
+package com.tt.controller;
+
+import android.os.Bundle;
+import android.util.Log;
+import android.view.View;
+import android.widget.Button;
+import android.widget.EditText;
+import android.widget.LinearLayout;
+import android.widget.TextView;
+import android.widget.Toast;
+
+import androidx.appcompat.app.AppCompatActivity;
+
+import com.google.gson.Gson;
+import com.google.gson.JsonObject;
+import com.tt.controller.signaling.SignalMessage;
+import com.tt.controller.signaling.WebSocketClient;
+import com.tt.controller.view.RemoteTouchView;
+import com.tt.controller.webrtc.WebRtcClient;
+
+import org.webrtc.EglBase;
+import org.webrtc.IceCandidate;
+import org.webrtc.SurfaceViewRenderer;
+
+import java.util.UUID;
+
+public class MainActivity extends AppCompatActivity {
+
+    private static final String TAG = "ControllerMain";
+
+    private EditText etServerUrl;
+    private EditText etDeviceId;
+    private EditText etTargetDeviceId;
+    private Button btnConnect;
+    private Button btnDisconnect;
+    private TextView tvStatus;
+    private SurfaceViewRenderer remoteVideoView;
+    private RemoteTouchView touchOverlay;
+    private LinearLayout controlPanel;
+    private LinearLayout setupPanel;
+    private TextView tvStatusControl;
+
+    private WebSocketClient wsClient;
+    private WebRtcClient webRtcClient;
+    private EglBase eglBase;
+    private final Gson gson = new Gson();
+    private String myDeviceId;
+    private String targetDeviceId;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+
+        etServerUrl = findViewById(R.id.et_server_url);
+        etDeviceId = findViewById(R.id.et_device_id);
+        etTargetDeviceId = findViewById(R.id.et_target_device_id);
+        btnConnect = findViewById(R.id.btn_connect);
+        btnDisconnect = findViewById(R.id.btn_disconnect);
+        tvStatus = findViewById(R.id.tv_status);
+        remoteVideoView = findViewById(R.id.remote_video_view);
+        touchOverlay = findViewById(R.id.touch_overlay);
+        controlPanel = findViewById(R.id.control_panel);
+        setupPanel = findViewById(R.id.setup_panel);
+        tvStatusControl = findViewById(R.id.tv_status_control);
+
+        // 默认服务器地址
+        etServerUrl.setText("ws://192.168.1.100:8080/ws/signal");
+        // 生成设备ID
+        myDeviceId = "controller_" + UUID.randomUUID().toString().substring(0, 8);
+        etDeviceId.setText(myDeviceId);
+
+        btnConnect.setOnClickListener(v -> connectToControlled());
+        btnDisconnect.setOnClickListener(v -> disconnect());
+
+        // 初始化 EGL 和远端视频渲染
+        eglBase = EglBase.create();
+        remoteVideoView.init(eglBase.getEglBaseContext(), null);
+        remoteVideoView.setZOrderMediaOverlay(true);
+
+        // 设置触摸事件
+        touchOverlay.setTouchEventListener(new RemoteTouchView.TouchEventListener() {
+            @Override
+            public void onTouch(float relX, float relY) {
+                sendTouchCommand(relX, relY);
+            }
+
+            @Override
+            public void onSwipe(float relX1, float relY1, float relX2, float relY2, long duration) {
+                sendSwipeCommand(relX1, relY1, relX2, relY2, duration);
+            }
+        });
+
+        updateUI(false);
+    }
+
+    private void connectToControlled() {
+        String serverUrl = etServerUrl.getText().toString().trim();
+        targetDeviceId = etTargetDeviceId.getText().toString().trim();
+        myDeviceId = etDeviceId.getText().toString().trim();
+
+        if (serverUrl.isEmpty() || targetDeviceId.isEmpty() || myDeviceId.isEmpty()) {
+            Toast.makeText(this, "请填写所有字段", Toast.LENGTH_SHORT).show();
+            return;
+        }
+
+        tvStatus.setText("状态: 正在连接信令服务器...");
+
+        // 初始化 WebSocket
+        wsClient = new WebSocketClient(serverUrl, myDeviceId);
+        wsClient.setListener(new WebSocketClient.SignalListener() {
+            @Override
+            public void onConnected() {
+                tvStatus.setText("状态: 已连接信令服务器，正在发起连接...");
+                // 连接成功后初始化 WebRTC 并创建 Offer
+                initWebRtcAndConnect();
+            }
+
+            @Override
+            public void onDisconnected() {
+                tvStatus.setText("状态: 已断开连接");
+                updateUI(false);
+            }
+
+            @Override
+            public void onError(String error) {
+                tvStatus.setText("状态: 连接错误 - " + error);
+                updateUI(false);
+            }
+
+            @Override
+            public void onMessage(SignalMessage message) {
+                handleSignalMessage(message);
+            }
+        });
+        wsClient.connect();
+    }
+
+    private void initWebRtcAndConnect() {
+        webRtcClient = new WebRtcClient(this, wsClient, myDeviceId);
+        webRtcClient.initialize(eglBase);
+        webRtcClient.setConnectionListener(new WebRtcClient.ConnectionListener() {
+            @Override
+            public void onConnectionEstablished() {
+                runOnUiThread(() -> {
+                    tvStatus.setText("状态: 已连接 - 远程控制中");
+                    updateUI(true);
+                });
+            }
+
+            @Override
+            public void onConnectionFailed(String error) {
+                runOnUiThread(() -> {
+                    tvStatus.setText("状态: 连接失败 - " + error);
+                    updateUI(false);
+                });
+            }
+
+            @Override
+            public void onDisconnected() {
+                runOnUiThread(() -> {
+                    tvStatus.setText("状态: 远端已断开");
+                    updateUI(false);
+                });
+            }
+        });
+        webRtcClient.createOffer(targetDeviceId, remoteVideoView);
+    }
+
+    private void handleSignalMessage(SignalMessage message) {
+        String type = message.getType();
+        if (type == null) return;
+
+        switch (type.toUpperCase()) {
+            case "ANSWER":
+                handleAnswer(message);
+                break;
+            case "ICE_CANDIDATE":
+                handleIceCandidate(message);
+                break;
+        }
+    }
+
+    private void handleAnswer(SignalMessage message) {
+        try {
+            JsonObject payload = gson.fromJson(message.getPayload(), JsonObject.class);
+            String sdp = payload.get("sdp").getAsString();
+            if (webRtcClient != null) {
+                webRtcClient.handleAnswer(sdp);
+            }
+        } catch (Exception e) {
+            Log.e(TAG, "Error parsing answer", e);
+        }
+    }
+
+    private void handleIceCandidate(SignalMessage message) {
+        try {
+            JsonObject payload = gson.fromJson(message.getPayload(), JsonObject.class);
+            String sdpMid = payload.get("sdpMid").getAsString();
+            int sdpMLineIndex = payload.get("sdpMLineIndex").getAsInt();
+            String candidate = payload.get("candidate").getAsString();
+
+            IceCandidate iceCandidate = new IceCandidate(sdpMid, sdpMLineIndex, candidate);
+            if (webRtcClient != null) {
+                webRtcClient.addIceCandidate(iceCandidate);
+            }
+        } catch (Exception e) {
+            Log.e(TAG, "Error parsing ICE candidate", e);
+        }
+    }
+
+    private void sendTouchCommand(float relX, float relY) {
+        if (webRtcClient != null) {
+            JsonObject cmd = new JsonObject();
+            cmd.addProperty("action", "TOUCH");
+            cmd.addProperty("x", relX);
+            cmd.addProperty("y", relY);
+            webRtcClient.sendControlCommand(cmd.toString());
+        }
+    }
+
+    private void sendSwipeCommand(float relX1, float relY1, float relX2, float relY2, long duration) {
+        if (webRtcClient != null) {
+            JsonObject cmd = new JsonObject();
+            cmd.addProperty("action", "SWIPE");
+            cmd.addProperty("x1", relX1);
+            cmd.addProperty("y1", relY1);
+            cmd.addProperty("x2", relX2);
+            cmd.addProperty("y2", relY2);
+            cmd.addProperty("duration", duration);
+            webRtcClient.sendControlCommand(cmd.toString());
+        }
+    }
+
+    private void disconnect() {
+        if (webRtcClient != null) {
+            webRtcClient.close();
+            webRtcClient = null;
+        }
+        if (wsClient != null) {
+            wsClient.disconnect();
+            wsClient = null;
+        }
+        remoteVideoView.clearImage();
+        updateUI(false);
+        tvStatus.setText("状态: 已停止");
+    }
+
+    private void updateUI(boolean connected) {
+        setupPanel.setVisibility(connected ? View.GONE : View.VISIBLE);
+        controlPanel.setVisibility(connected ? View.VISIBLE : View.GONE);
+        btnConnect.setEnabled(!connected);
+        btnDisconnect.setEnabled(connected);
+        if (tvStatusControl != null) {
+            tvStatusControl.setText(connected ? "远程控制中" : "未连接");
+        }
+    }
+
+    @Override
+    protected void onDestroy() {
+        super.onDestroy();
+        disconnect();
+        if (eglBase != null) {
+            eglBase.release();
+        }
+    }
+}

WebRTCController/app/src/main/java/com/tt/controller/signaling/SignalMessage.java

@@ -0,0 +1,34 @@
+package com.tt.controller.signaling;
+
+public class SignalMessage {
+
+    private String type;
+    private String fromDeviceId;
+    private String toDeviceId;
+    private String deviceType;
+    private String payload;
+
+    public SignalMessage() {}
+
+    public SignalMessage(String type, String fromDeviceId, String toDeviceId, String payload) {
+        this.type = type;
+        this.fromDeviceId = fromDeviceId;
+        this.toDeviceId = toDeviceId;
+        this.payload = payload;
+    }
+
+    public String getType() { return type; }
+    public void setType(String type) { this.type = type; }
+
+    public String getFromDeviceId() { return fromDeviceId; }
+    public void setFromDeviceId(String fromDeviceId) { this.fromDeviceId = fromDeviceId; }
+
+    public String getToDeviceId() { return toDeviceId; }
+    public void setToDeviceId(String toDeviceId) { this.toDeviceId = toDeviceId; }
+
+    public String getDeviceType() { return deviceType; }
+    public void setDeviceType(String deviceType) { this.deviceType = deviceType; }
+
+    public String getPayload() { return payload; }
+    public void setPayload(String payload) { this.payload = payload; }
+}

WebRTCController/app/src/main/java/com/tt/controller/signaling/WebSocketClient.java

@@ -0,0 +1,116 @@
+package com.tt.controller.signaling;
+
+import android.os.Handler;
+import android.os.Looper;
+import android.util.Log;
+
+import com.google.gson.Gson;
+
+import okhttp3.OkHttpClient;
+import okhttp3.Request;
+import okhttp3.Response;
+import okhttp3.WebSocket;
+import okhttp3.WebSocketListener;
+
+public class WebSocketClient {
+
+    private static final String TAG = "WebSocketClient";
+
+    private final String serverUrl;
+    private final String deviceId;
+    private final Gson gson = new Gson();
+    private final Handler mainHandler = new Handler(Looper.getMainLooper());
+    private OkHttpClient client;
+    private WebSocket webSocket;
+    private SignalListener listener;
+
+    public interface SignalListener {
+        void onConnected();
+        void onDisconnected();
+        void onError(String error);
+        void onMessage(SignalMessage message);
+    }
+
+    public WebSocketClient(String serverUrl, String deviceId) {
+        this.serverUrl = serverUrl;
+        this.deviceId = deviceId;
+    }
+
+    public void setListener(SignalListener listener) {
+        this.listener = listener;
+    }
+
+    public void connect() {
+        client = new OkHttpClient.Builder().build();
+        Request request = new Request.Builder().url(serverUrl).build();
+
+        webSocket = client.newWebSocket(request, new WebSocketListener() {
+            @Override
+            public void onOpen(WebSocket ws, Response response) {
+                Log.i(TAG, "WebSocket connected");
+                registerDevice();
+                mainHandler.post(() -> {
+                    if (listener != null) listener.onConnected();
+                });
+            }
+
+            @Override
+            public void onMessage(WebSocket ws, String text) {
+                Log.d(TAG, "Received: " + text);
+                try {
+                    SignalMessage message = gson.fromJson(text, SignalMessage.class);
+                    mainHandler.post(() -> {
+                        if (listener != null) listener.onMessage(message);
+                    });
+                } catch (Exception e) {
+                    Log.e(TAG, "Error parsing message", e);
+                }
+            }
+
+            @Override
+            public void onClosed(WebSocket ws, int code, String reason) {
+                Log.i(TAG, "WebSocket closed: " + reason);
+                mainHandler.post(() -> {
+                    if (listener != null) listener.onDisconnected();
+                });
+            }
+
+            @Override
+            public void onFailure(WebSocket ws, Throwable t, Response response) {
+                Log.e(TAG, "WebSocket error: " + t.getMessage(), t);
+                mainHandler.post(() -> {
+                    if (listener != null) listener.onError(t.getMessage());
+                });
+            }
+        });
+    }
+
+    public void sendMessage(SignalMessage message) {
+        if (webSocket != null) {
+            String json = gson.toJson(message);
+            Log.d(TAG, "Sending: " + json);
+            webSocket.send(json);
+        }
+    }
+
+    public void disconnect() {
+        if (webSocket != null) {
+            webSocket.close(1000, "Disconnecting");
+        }
+        if (client != null) {
+            client.dispatcher().executorService().shutdown();
+        }
+    }
+
+    private void registerDevice() {
+        SignalMessage registerMsg = new SignalMessage();
+        registerMsg.setType("REGISTER");
+        registerMsg.setFromDeviceId(deviceId);
+        registerMsg.setDeviceType("CONTROLLER");
+        sendMessage(registerMsg);
+    }
+
+    public boolean isConnected() {
+        return webSocket != null;
+    }
+}

WebRTCController/app/src/main/java/com/tt/controller/view/RemoteTouchView.java

@@ -0,0 +1,110 @@
+package com.tt.controller.view;
+
+import android.content.Context;
+import android.util.AttributeSet;
+import android.util.Log;
+import android.view.MotionEvent;
+import android.view.SurfaceView;
+
+import com.google.gson.Gson;
+import com.google.gson.JsonObject;
+
+/**
+ * 自定义SurfaceView，用于捕获触摸事件并转换为远端输入指令。
+ * 触摸坐标会被转换为相对于视图的百分比坐标（0.0-1.0），
+ * 以便在不同分辨率的设备间进行坐标换算。
+ */
+public class RemoteTouchView extends SurfaceView {
+
+    private static final String TAG = "RemoteTouchView";
+    private final Gson gson = new Gson();
+    private TouchEventListener listener;
+
+    private float lastTouchX;
+    private float lastTouchY;
+    private long swipeStartTime;
+
+    public interface TouchEventListener {
+        void onTouch(float relX, float relY);
+        void onSwipe(float relX1, float relY1, float relX2, float relY2, long duration);
+    }
+
+    public RemoteTouchView(Context context) {
+        super(context);
+    }
+
+    public RemoteTouchView(Context context, AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    public RemoteTouchView(Context context, AttributeSet attrs, int defStyleAttr) {
+        super(context, attrs, defStyleAttr);
+    }
+
+    public void setTouchEventListener(TouchEventListener listener) {
+        this.listener = listener;
+    }
+
+    @Override
+    public boolean onTouchEvent(MotionEvent event) {
+        if (listener == null) return super.onTouchEvent(event);
+
+        float relX = event.getX() / getWidth();
+        float relY = event.getY() / getHeight();
+
+        // 确保坐标在 [0, 1] 范围内
+        relX = Math.max(0, Math.min(1, relX));
+        relY = Math.max(0, Math.min(1, relY));
+
+        switch (event.getActionMasked()) {
+            case MotionEvent.ACTION_DOWN:
+                lastTouchX = relX;
+                lastTouchY = relY;
+                swipeStartTime = System.currentTimeMillis();
+                return true;
+
+            case MotionEvent.ACTION_MOVE:
+                // 实时更新坐标（可选：用于拖拽效果）
+                lastTouchX = relX;
+                lastTouchY = relY;
+                return true;
+
+            case MotionEvent.ACTION_UP:
+                long duration = System.currentTimeMillis() - swipeStartTime;
+                float dx = Math.abs(relX - lastTouchX);
+                float dy = Math.abs(relY - lastTouchY);
+
+                if (duration < 200 && dx < 0.02 && dy < 0.02) {
+                    // 点击事件
+                    listener.onTouch(lastTouchX, lastTouchY);
+                    Log.d(TAG, "Touch at: " + lastTouchX + ", " + lastTouchY);
+                } else {
+                    // 滑动事件
+                    listener.onSwipe(lastTouchX, lastTouchY, relX, relY, duration);
+                    Log.d(TAG, "Swipe from (" + lastTouchX + "," + lastTouchY + ") to (" + relX + "," + relY + ")");
+                }
+                return true;
+        }
+
+        return super.onTouchEvent(event);
+    }
+
+    public String createTouchCommand(float relX, float relY) {
+        JsonObject cmd = new JsonObject();
+        cmd.addProperty("action", "TOUCH");
+        cmd.addProperty("x", relX);
+        cmd.addProperty("y", relY);
+        return cmd.toString();
+    }
+
+    public String createSwipeCommand(float relX1, float relY1, float relX2, float relY2, long duration) {
+        JsonObject cmd = new JsonObject();
+        cmd.addProperty("action", "SWIPE");
+        cmd.addProperty("x1", relX1);
+        cmd.addProperty("y1", relY1);
+        cmd.addProperty("x2", relX2);
+        cmd.addProperty("y2", relY2);
+        cmd.addProperty("duration", duration);
+        return cmd.toString();
+    }
+}

WebRTCController/app/src/main/java/com/tt/controller/webrtc/AppSdpObserver.java

@@ -0,0 +1,48 @@
+package com.tt.controller.webrtc;
+
+import android.util.Log;
+
+import org.webrtc.SdpObserver;
+import org.webrtc.SessionDescription;
+
+public class AppSdpObserver implements SdpObserver {
+
+    private static final String TAG = "AppSdpObserver";
+
+    private final SdpEventListener listener;
+
+    public interface SdpEventListener {
+        void onCreateSuccess(SessionDescription sdp);
+        void onSetSuccess();
+        void onCreateFailure(String error);
+        void onSetFailure(String error);
+    }
+
+    public AppSdpObserver(SdpEventListener listener) {
+        this.listener = listener;
+    }
+
+    @Override
+    public void onCreateSuccess(SessionDescription sdp) {
+        Log.d(TAG, "SDP created: " + sdp.type);
+        if (listener != null) listener.onCreateSuccess(sdp);
+    }
+
+    @Override
+    public void onSetSuccess() {
+        Log.d(TAG, "SDP set success");
+        if (listener != null) listener.onSetSuccess();
+    }
+
+    @Override
+    public void onCreateFailure(String error) {
+        Log.e(TAG, "SDP create failure: " + error);
+        if (listener != null) listener.onCreateFailure(error);
+    }
+
+    @Override
+    public void onSetFailure(String error) {
+        Log.e(TAG, "SDP set failure: " + error);
+        if (listener != null) listener.onSetFailure(error);
+    }
+}

WebRTCController/app/src/main/java/com/tt/controller/webrtc/PeerObserver.java

@@ -0,0 +1,77 @@
+package com.tt.controller.webrtc;
+
+import org.webrtc.DataChannel;
+import org.webrtc.IceCandidate;
+import org.webrtc.MediaStream;
+import org.webrtc.PeerConnection;
+import org.webrtc.RtpReceiver;
+
+public class PeerObserver implements PeerConnection.Observer {
+
+    private static final String TAG = "PeerObserver";
+
+    private final PeerEventListener listener;
+
+    public interface PeerEventListener {
+        void onIceCandidate(IceCandidate candidate);
+        void onIceConnectionChange(PeerConnection.IceConnectionState newState);
+        void onDataChannel(DataChannel dataChannel);
+        void onAddStream(MediaStream stream);
+        void onRemoveStream(MediaStream stream);
+    }
+
+    public PeerObserver(PeerEventListener listener) {
+        this.listener = listener;
+    }
+
+    @Override
+    public void onSignalingChange(PeerConnection.SignalingState newState) {
+        android.util.Log.d(TAG, "Signaling state: " + newState);
+    }
+
+    @Override
+    public void onIceConnectionChange(PeerConnection.IceConnectionState newState) {
+        android.util.Log.d(TAG, "ICE connection state: " + newState);
+        if (listener != null) listener.onIceConnectionChange(newState);
+    }
+
+    @Override
+    public void onIceConnectionReceivingChange(boolean receiving) {}
+
+    @Override
+    public void onIceGatheringChange(PeerConnection.IceGatheringState newState) {
+        android.util.Log.d(TAG, "ICE gathering state: " + newState);
+    }
+
+    @Override
+    public void onIceCandidate(IceCandidate candidate) {
+        if (listener != null) listener.onIceCandidate(candidate);
+    }
+
+    @Override
+    public void onIceCandidatesRemoved(IceCandidate[] candidates) {}
+
+    @Override
+    public void onAddStream(MediaStream stream) {
+        if (listener != null) listener.onAddStream(stream);
+    }
+
+    @Override
+    public void onRemoveStream(MediaStream stream) {
+        if (listener != null) listener.onRemoveStream(stream);
+    }
+
+    @Override
+    public void onDataChannel(DataChannel dataChannel) {
+        android.util.Log.d(TAG, "Data channel received: " + dataChannel.label());
+        if (listener != null) listener.onDataChannel(dataChannel);
+    }
+
+    @Override
+    public void onRenegotiationNeeded() {
+        android.util.Log.d(TAG, "Renegotiation needed");
+    }
+
+    @Override
+    public void onAddTrack(RtpReceiver receiver, MediaStream[] streams) {}
+}

WebRTCController/app/src/main/java/com/tt/controller/webrtc/VideoRenderer.java

@@ -0,0 +1,35 @@
+package com.tt.controller.webrtc;
+
+import org.webrtc.EglBase;
+import org.webrtc.RendererCommon;
+import org.webrtc.SurfaceViewRenderer;
+import org.webrtc.VideoFrame;
+import org.webrtc.VideoSink;
+
+/**
+ * 远端视频流渲染器，将WebRTC视频帧渲染到SurfaceViewRenderer。
+ */
+public class VideoRenderer implements VideoSink {
+
+    private static final String TAG = "VideoRenderer";
+    private final SurfaceViewRenderer surfaceViewRenderer;
+
+    public VideoRenderer(SurfaceViewRenderer surfaceViewRenderer) {
+        this.surfaceViewRenderer = surfaceViewRenderer;
+    }
+
+    @Override
+    public void onFrame(VideoFrame frame) {
+        surfaceViewRenderer.onFrame(frame);
+    }
+
+    public void init(EglBase eglBase) {
+        surfaceViewRenderer.init(eglBase.getEglBaseContext(), null);
+        surfaceViewRenderer.setScalingType(RendererCommon.ScalingType.SCALE_ASPECT_FIT);
+        surfaceViewRenderer.setEnableHardwareScaler(true);
+    }
+
+    public void release() {
+        surfaceViewRenderer.release();
+    }
+}

WebRTCController/app/src/main/java/com/tt/controller/webrtc/WebRtcClient.java

@@ -0,0 +1,258 @@
+package com.tt.controller.webrtc;
+
+import android.content.Context;
+import android.util.Log;
+
+import com.google.gson.Gson;
+import com.google.gson.JsonObject;
+import com.tt.controller.signaling.SignalMessage;
+import com.tt.controller.signaling.WebSocketClient;
+
+import org.webrtc.DataChannel;
+import org.webrtc.EglBase;
+import org.webrtc.IceCandidate;
+import org.webrtc.MediaConstraints;
+import org.webrtc.MediaStream;
+import org.webrtc.PeerConnection;
+import org.webrtc.PeerConnectionFactory;
+import org.webrtc.SessionDescription;
+import org.webrtc.SurfaceViewRenderer;
+import org.webrtc.VideoTrack;
+
+import java.nio.ByteBuffer;
+import java.nio.charset.StandardCharsets;
+import java.util.ArrayList;
+
+public class WebRtcClient {
+
+    private static final String TAG = "WebRtcClient";
+    private static final String DATA_CHANNEL_LABEL = "control_channel";
+
+    private final Context context;
+    private final WebSocketClient wsClient;
+    private final String deviceId;
+    private final Gson gson = new Gson();
+
+    private PeerConnectionFactory peerConnectionFactory;
+    private PeerConnection peerConnection;
+    private DataChannel dataChannel;
+    private EglBase eglBase;
+    private String currentControlledId;
+    private VideoRenderer videoRenderer;
+
+    public interface ConnectionListener {
+        void onConnectionEstablished();
+        void onConnectionFailed(String error);
+        void onDisconnected();
+    }
+
+    private ConnectionListener connectionListener;
+
+    public WebRtcClient(Context context, WebSocketClient wsClient, String deviceId) {
+        this.context = context;
+        this.wsClient = wsClient;
+        this.deviceId = deviceId;
+    }
+
+    public void setConnectionListener(ConnectionListener listener) {
+        this.connectionListener = listener;
+    }
+
+    public void initialize(EglBase eglBase) {
+        this.eglBase = eglBase;
+        PeerConnectionFactory.InitializationOptions initOptions =
+                PeerConnectionFactory.InitializationOptions.builder(context)
+                        .createInitializationOptions();
+        PeerConnectionFactory.initialize(initOptions);
+
+        PeerConnectionFactory.Options options = new PeerConnectionFactory.Options();
+        peerConnectionFactory = PeerConnectionFactory.builder()
+                .setOptions(options)
+                .createPeerConnectionFactory();
+    }
+
+    public void createOffer(String controlledId, SurfaceViewRenderer remoteRenderer) {
+        this.currentControlledId = controlledId;
+
+        PeerConnection.RTCConfiguration config = new PeerConnection.RTCConfiguration(new ArrayList<>());
+        config.sdpSemantics = PeerConnection.SdpSemantics.UNIFIED_PLAN;
+
+        PeerObserver peerObserver = new PeerObserver(new PeerObserver.PeerEventListener() {
+            @Override
+            public void onIceCandidate(IceCandidate candidate) {
+                sendIceCandidate(candidate, controlledId);
+            }
+
+            @Override
+            public void onIceConnectionChange(PeerConnection.IceConnectionState newState) {
+                Log.d(TAG, "ICE connection state: " + newState);
+                if (newState == PeerConnection.IceConnectionState.CONNECTED) {
+                    if (connectionListener != null) connectionListener.onConnectionEstablished();
+                } else if (newState == PeerConnection.IceConnectionState.FAILED ||
+                        newState == PeerConnection.IceConnectionState.DISCONNECTED) {
+                    if (connectionListener != null) connectionListener.onDisconnected();
+                }
+            }
+
+            @Override
+            public void onDataChannel(DataChannel dc) {
+                Log.d(TAG, "Data channel received: " + dc.label());
+                handleDataChannel(dc);
+            }
+
+            @Override
+            public void onAddStream(MediaStream stream) {
+                if (!stream.videoTracks.isEmpty()) {
+                    VideoTrack videoTrack = stream.videoTracks.get(0);
+                    if (videoRenderer != null) {
+                        videoTrack.addSink(videoRenderer);
+                    }
+                }
+            }
+
+            @Override
+            public void onRemoveStream(MediaStream stream) {}
+        });
+
+        peerConnection = peerConnectionFactory.createPeerConnection(config, peerObserver);
+
+        // 创建 DataChannel
+        DataChannel.Init dcInit = new DataChannel.Init();
+        dcInit.ordered = true;
+        dataChannel = peerConnection.createDataChannel(DATA_CHANNEL_LABEL, dcInit);
+        handleDataChannel(dataChannel);
+
+        // 初始化远端视频渲染器
+        if (remoteRenderer != null) {
+            videoRenderer = new VideoRenderer(remoteRenderer);
+        }
+
+        // 创建 Offer
+        MediaConstraints constraints = new MediaConstraints();
+        constraints.mandatory.add(new MediaConstraints.KeyValuePair("OfferToReceiveVideo", "true"));
+        constraints.mandatory.add(new MediaConstraints.KeyValuePair("OfferToReceiveAudio", "false"));
+
+        peerConnection.createOffer(new AppSdpObserver(new AppSdpObserver.SdpEventListener() {
+            @Override
+            public void onCreateSuccess(SessionDescription sdp) {
+                peerConnection.setLocalDescription(new AppSdpObserver(new AppSdpObserver.SdpEventListener() {
+                    @Override
+                    public void onCreateSuccess(SessionDescription s) {}
+                    @Override
+                    public void onSetSuccess() {
+                        sendOffer(sdp.description, controlledId);
+                    }
+                    @Override
+                    public void onCreateFailure(String error) {}
+                    @Override
+                    public void onSetFailure(String error) {}
+                }), sdp);
+            }
+
+            @Override
+            public void onSetSuccess() {}
+            @Override
+            public void onCreateFailure(String error) {
+                if (connectionListener != null) connectionListener.onConnectionFailed(error);
+            }
+            @Override
+            public void onSetFailure(String error) {}
+        }), constraints);
+    }
+
+    public void handleAnswer(String answerSdp) {
+        if (peerConnection != null) {
+            SessionDescription remoteSdp = new SessionDescription(SessionDescription.Type.ANSWER, answerSdp);
+            peerConnection.setRemoteDescription(new AppSdpObserver(new AppSdpObserver.SdpEventListener() {
+                @Override
+                public void onCreateSuccess(SessionDescription sdp) {}
+                @Override
+                public void onSetSuccess() {
+                    Log.d(TAG, "Remote answer set successfully");
+                }
+                @Override
+                public void onCreateFailure(String error) {}
+                @Override
+                public void onSetFailure(String error) {}
+            }), remoteSdp);
+        }
+    }
+
+    public void addIceCandidate(IceCandidate candidate) {
+        if (peerConnection != null) {
+            peerConnection.addIceCandidate(candidate);
+        }
+    }
+
+    public void sendControlCommand(String commandJson) {
+        if (dataChannel != null && dataChannel.state() == DataChannel.State.OPEN) {
+            DataChannel.Buffer buffer = new DataChannel.Buffer(
+                    ByteBuffer.wrap(commandJson.getBytes(StandardCharsets.UTF_8)), false);
+            dataChannel.send(buffer);
+        }
+    }
+
+    public void close() {
+        if (dataChannel != null) {
+            dataChannel.close();
+            dataChannel.dispose();
+        }
+        if (peerConnection != null) {
+            peerConnection.close();
+            peerConnection.dispose();
+        }
+        if (peerConnectionFactory != null) {
+            peerConnectionFactory.dispose();
+        }
+    }
+
+    private void handleDataChannel(DataChannel dc) {
+        dc.registerObserver(new DataChannel.Observer() {
+            @Override
+            public void onBufferedAmountChange(long previousAmount) {}
+
+            @Override
+            public void onStateChange() {
+                Log.d(TAG, "DataChannel state: " + dc.state());
+            }
+
+            @Override
+            public void onMessage(DataChannel.Buffer buffer) {
+                byte[] data = new byte[buffer.data.remaining()];
+                buffer.data.get(data);
+                String message = new String(data, StandardCharsets.UTF_8);
+                Log.d(TAG, "DataChannel message: " + message);
+            }
+        });
+    }
+
+    private void sendOffer(String sdp, String controlledId) {
+        SignalMessage msg = new SignalMessage();
+        msg.setType("OFFER");
+        msg.setFromDeviceId(deviceId);
+        msg.setToDeviceId(controlledId);
+        msg.setDeviceType("CONTROLLER");
+
+        JsonObject payload = new JsonObject();
+        payload.addProperty("sdp", sdp);
+        msg.setPayload(payload.toString());
+
+        wsClient.sendMessage(msg);
+    }
+
+    private void sendIceCandidate(IceCandidate candidate, String controlledId) {
+        SignalMessage msg = new SignalMessage();
+        msg.setType("ICE_CANDIDATE");
+        msg.setFromDeviceId(deviceId);
+        msg.setToDeviceId(controlledId);
+        msg.setDeviceType("CONTROLLER");
+
+        JsonObject payload = new JsonObject();
+        payload.addProperty("sdpMid", candidate.sdpMid);
+        payload.addProperty("sdpMLineIndex", candidate.sdpMLineIndex);
+        payload.addProperty("candidate", candidate.sdp);
+        msg.setPayload(payload.toString());
+
+        wsClient.sendMessage(msg);
+    }
+}

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

@@ -0,0 +1,124 @@
+<?xml version="1.0" encoding="utf-8"?>
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <!-- 设置面板 -->
+    <LinearLayout
+        android:id="@+id/setup_panel"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:orientation="vertical"
+        android:padding="24dp"
+        android:gravity="center_vertical">
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="WebRTC 控制端"
+            android:textSize="24sp"
+            android:textStyle="bold"
+            android:layout_marginBottom="24dp"/>
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="信令服务器地址:"
+            android:textSize="14sp"/>
+
+        <EditText
+            android:id="@+id/et_server_url"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:inputType="textUri"
+            android:hint="ws://192.168.1.100:8080/ws/signal"
+            android:layout_marginBottom="16dp"/>
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="本机设备ID:"
+            android:textSize="14sp"/>
+
+        <EditText
+            android:id="@+id/et_device_id"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:inputType="text"
+            android:hint="设备ID"
+            android:layout_marginBottom="16dp"/>
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="目标被控设备ID:"
+            android:textSize="14sp"/>
+
+        <EditText
+            android:id="@+id/et_target_device_id"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:inputType="text"
+            android:hint="被控端设备ID"
+            android:layout_marginBottom="24dp"/>
+
+        <TextView
+            android:id="@+id/tv_status"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="状态: 已停止"
+            android:textSize="16sp"
+            android:textStyle="bold"
+            android:layout_marginBottom="24dp"/>
+
+        <Button
+            android:id="@+id/btn_connect"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="连接被控设备"
+            android:layout_marginBottom="8dp"/>
+
+        <Button
+            android:id="@+id/btn_disconnect"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="断开连接"
+            android:enabled="false"/>
+
+    </LinearLayout>
+
+    <!-- 控制面板（连接后显示） -->
+    <FrameLayout
+        android:id="@+id/control_panel"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:visibility="gone">
+
+        <!-- 远端视频渲染 -->
+        <org.webrtc.SurfaceViewRenderer
+            android:id="@+id/remote_video_view"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"/>
+
+        <!-- 触摸控制层（覆盖在视频上方） -->
+        <com.tt.controller.view.RemoteTouchView
+            android:id="@+id/touch_overlay"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:background="@android:color/transparent"/>
+
+        <!-- 顶部状态栏 -->
+        <TextView
+            android:id="@+id/tv_status_control"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="top|start"
+            android:padding="8dp"
+            android:background="#80000000"
+            android:textColor="@android:color/white"
+            android:text="远程控制中"
+            android:textSize="14sp"/>
+
+    </FrameLayout>
+
+</FrameLayout>

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

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <string name="app_name">WebRTC控制端</string>
+</resources>

WebRTCController/build.gradle

@@ -0,0 +1,4 @@
+// Top-level build file
+plugins {
+    id 'com.android.application' version '8.1.4' apply false
+}

WebRTCController/gradle.properties

@@ -0,0 +1,3 @@
+android.useAndroidX=true
+android.enableJetifier=true
+org.gradle.jvmargs=-Xmx2048m -Dfile.encoding=UTF-8

WebRTCController/local.properties

@@ -0,0 +1,8 @@
+## This file must *NOT* be checked into Version Control Systems,
+# as it contains information specific to your local configuration.
+#
+# Location of the SDK. This is only used by Gradle.
+# For customization when using a Version Control System, please read the
+# header note.
+#Sat Jul 11 15:36:50 CST 2026
+sdk.dir=F\:\\AndroidSDK

WebRTCController/settings.gradle

@@ -0,0 +1,18 @@
+pluginManagement {
+    repositories {
+        google()
+        mavenCentral()
+        gradlePluginPortal()
+    }
+}
+
+dependencyResolutionManagement {
+    repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
+    repositories {
+        google()
+        mavenCentral()
+    }
+}
+
+rootProject.name = "WebRTCController"
+include ':app'

WebRTCSignalServer/.gitignore

@@ -0,0 +1,2 @@
+/target/
+/.idea/

WebRTCSignalServer/pom.xml

@@ -0,0 +1,52 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <parent>
+        <groupId>org.springframework.boot</groupId>
+        <artifactId>spring-boot-starter-parent</artifactId>
+        <version>4.1.0</version>
+        <relativePath/>
+    </parent>
+
+    <groupId>com.tt</groupId>
+    <artifactId>webrtc-signal-server</artifactId>
+    <version>1.0.0</version>
+    <name>WebRTCSignalServer</name>
+    <description>WebRTC Signaling Server using WebSocket</description>
+
+    <properties>
+        <java.version>25</java.version>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-websocket</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>com.fasterxml.jackson.core</groupId>
+            <artifactId>jackson-databind</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-test</artifactId>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-maven-plugin</artifactId>
+            </plugin>
+        </plugins>
+    </build>
+</project>

WebRTCSignalServer/src/main/java/com/tt/signaling/SignalServerApplication.java

@@ -0,0 +1,12 @@
+package com.tt.signaling;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class SignalServerApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(SignalServerApplication.class, args);
+    }
+}

WebRTCSignalServer/src/main/java/com/tt/signaling/config/WebSocketConfig.java

@@ -0,0 +1,24 @@
+package com.tt.signaling.config;
+
+import com.tt.signaling.handler.SignalWebSocketHandler;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.web.socket.config.annotation.EnableWebSocket;
+import org.springframework.web.socket.config.annotation.WebSocketConfigurer;
+import org.springframework.web.socket.config.annotation.WebSocketHandlerRegistry;
+
+@Configuration
+@EnableWebSocket
+public class WebSocketConfig implements WebSocketConfigurer {
+
+    private final SignalWebSocketHandler signalWebSocketHandler;
+
+    public WebSocketConfig(SignalWebSocketHandler signalWebSocketHandler) {
+        this.signalWebSocketHandler = signalWebSocketHandler;
+    }
+
+    @Override
+    public void registerWebSocketHandlers(WebSocketHandlerRegistry registry) {
+        registry.addHandler(signalWebSocketHandler, "/ws/signal")
+                .setAllowedOrigins("*");
+    }
+}

WebRTCSignalServer/src/main/java/com/tt/signaling/handler/SignalWebSocketHandler.java

@@ -0,0 +1,155 @@
+package com.tt.signaling.handler;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.tt.signaling.manager.SessionManager;
+import com.tt.signaling.model.DeviceType;
+import com.tt.signaling.model.SignalMessage;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.stereotype.Component;
+import org.springframework.web.socket.CloseStatus;
+import org.springframework.web.socket.TextMessage;
+import org.springframework.web.socket.WebSocketSession;
+import org.springframework.web.socket.handler.TextWebSocketHandler;
+
+import java.io.IOException;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+@Component
+public class SignalWebSocketHandler extends TextWebSocketHandler {
+
+    private static final Logger logger = LoggerFactory.getLogger(SignalWebSocketHandler.class);
+    private static final ObjectMapper objectMapper = new ObjectMapper();
+
+    private final SessionManager sessionManager;
+
+    public SignalWebSocketHandler(SessionManager sessionManager) {
+        this.sessionManager = sessionManager;
+    }
+
+    @Override
+    public void afterConnectionEstablished(WebSocketSession session) throws Exception {
+        logger.info("New WebSocket connection: {}", session.getId());
+    }
+
+    @Override
+    protected void handleTextMessage(WebSocketSession session, TextMessage message) throws Exception {
+        String payload = message.getPayload();
+        logger.debug("Received message: {}", payload);
+
+        try {
+            SignalMessage signalMessage = objectMapper.readValue(payload, SignalMessage.class);
+            String type = signalMessage.getType();
+
+            if (type == null) {
+                logger.warn("Message type is null");
+                return;
+            }
+
+            switch (type.toUpperCase()) {
+                case "REGISTER":
+                    handleRegister(session, signalMessage);
+                    break;
+                case "DEVICE_LIST":
+                    handleDeviceList(session, signalMessage);
+                    break;
+                case "OFFER":
+                case "ANSWER":
+                case "ICE_CANDIDATE":
+                case "CONTROL_COMMAND":
+                    forwardMessage(signalMessage);
+                    break;
+                default:
+                    // 其他消息类型直接转发
+                    forwardMessage(signalMessage);
+                    break;
+            }
+        } catch (Exception e) {
+            logger.error("Error handling message: {}", e.getMessage(), e);
+        }
+    }
+
+    @Override
+    public void afterConnectionClosed(WebSocketSession session, CloseStatus status) throws Exception {
+        logger.info("WebSocket connection closed: {} ({})", session.getId(), status);
+        sessionManager.unregisterSession(session);
+    }
+
+    @Override
+    public void handleTransportError(WebSocketSession session, Throwable exception) throws Exception {
+        logger.error("Transport error on session {}: {}", session.getId(), exception.getMessage());
+        sessionManager.unregisterSession(session);
+        if (session.isOpen()) {
+            session.close(CloseStatus.SERVER_ERROR);
+        }
+    }
+
+    private void handleRegister(WebSocketSession session, SignalMessage message) {
+        String deviceId = message.getFromDeviceId();
+        String deviceTypeStr = message.getDeviceType();
+
+        if (deviceId == null || deviceTypeStr == null) {
+            logger.warn("Invalid REGISTER message: missing deviceId or deviceType");
+            return;
+        }
+
+        try {
+            DeviceType deviceType = DeviceType.valueOf(deviceTypeStr.toUpperCase());
+            sessionManager.registerDevice(deviceId, deviceType, session);
+
+            // 回复注册成功
+            Map<String, Object> response = new HashMap<>();
+            response.put("type", "REGISTER_SUCCESS");
+            response.put("deviceId", deviceId);
+            sendToSession(session, response);
+
+            logger.info("Device {} registered as {}", deviceId, deviceType);
+        } catch (IllegalArgumentException e) {
+            logger.warn("Invalid device type: {}", deviceTypeStr);
+        }
+    }
+
+    private void handleDeviceList(WebSocketSession session, SignalMessage message) {
+        List<String> controllers = sessionManager.getDevicesByType(DeviceType.CONTROLLER);
+        List<String> controlled = sessionManager.getDevicesByType(DeviceType.CONTROLLED);
+
+        Map<String, Object> response = new HashMap<>();
+        response.put("type", "DEVICE_LIST");
+        response.put("controllers", controllers);
+        response.put("controlled", controlled);
+        sendToSession(session, response);
+    }
+
+    private void forwardMessage(SignalMessage message) {
+        String toDeviceId = message.getToDeviceId();
+        if (toDeviceId == null) {
+            logger.warn("Cannot forward message: toDeviceId is null");
+            return;
+        }
+
+        WebSocketSession targetSession = sessionManager.getSession(toDeviceId);
+        if (targetSession == null || !targetSession.isOpen()) {
+            logger.warn("Target device {} is not online", toDeviceId);
+            return;
+        }
+
+        try {
+            String jsonMessage = objectMapper.writeValueAsString(message);
+            targetSession.sendMessage(new TextMessage(jsonMessage));
+            logger.debug("Forwarded {} from {} to {}", message.getType(), message.getFromDeviceId(), toDeviceId);
+        } catch (IOException e) {
+            logger.error("Error forwarding message to {}: {}", toDeviceId, e.getMessage());
+        }
+    }
+
+    private void sendToSession(WebSocketSession session, Object data) {
+        try {
+            String json = objectMapper.writeValueAsString(data);
+            session.sendMessage(new TextMessage(json));
+        } catch (IOException e) {
+            logger.error("Error sending message to session {}: {}", session.getId(), e.getMessage());
+        }
+    }
+}

WebRTCSignalServer/src/main/java/com/tt/signaling/manager/SessionManager.java

@@ -0,0 +1,70 @@
+package com.tt.signaling.manager;
+
+import com.tt.signaling.model.DeviceType;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.stereotype.Component;
+import org.springframework.web.socket.WebSocketSession;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+
+@Component
+public class SessionManager {
+
+    private static final Logger logger = LoggerFactory.getLogger(SessionManager.class);
+
+    // deviceId -> WebSocketSession
+    private final Map<String, WebSocketSession> sessions = new ConcurrentHashMap<>();
+    // deviceId -> deviceType
+    private final Map<String, DeviceType> deviceTypes = new ConcurrentHashMap<>();
+    // session.getId() -> deviceId (用于断开连接时清理)
+    private final Map<String, String> sessionToDevice = new ConcurrentHashMap<>();
+
+    public void registerDevice(String deviceId, DeviceType deviceType, WebSocketSession session) {
+        sessions.put(deviceId, session);
+        deviceTypes.put(deviceId, deviceType);
+        sessionToDevice.put(session.getId(), deviceId);
+        logger.info("Device registered: {} ({})", deviceId, deviceType);
+    }
+
+    public void unregisterSession(WebSocketSession session) {
+        String deviceId = sessionToDevice.remove(session.getId());
+        if (deviceId != null) {
+            sessions.remove(deviceId);
+            deviceTypes.remove(deviceId);
+            logger.info("Device unregistered: {}", deviceId);
+        }
+    }
+
+    public WebSocketSession getSession(String deviceId) {
+        return sessions.get(deviceId);
+    }
+
+    public boolean isDeviceOnline(String deviceId) {
+        WebSocketSession session = sessions.get(deviceId);
+        return session != null && session.isOpen();
+    }
+
+    public List<String> getDevicesByType(DeviceType type) {
+        List<String> result = new ArrayList<>();
+        for (Map.Entry<String, DeviceType> entry : deviceTypes.entrySet()) {
+            if (entry.getValue() == type && isDeviceOnline(entry.getKey())) {
+                result.add(entry.getKey());
+            }
+        }
+        return result;
+    }
+
+    public List<String> getAllOnlineDevices() {
+        List<String> result = new ArrayList<>();
+        for (Map.Entry<String, WebSocketSession> entry : sessions.entrySet()) {
+            if (entry.getValue().isOpen()) {
+                result.add(entry.getKey());
+            }
+        }
+        return result;
+    }
+}

WebRTCSignalServer/src/main/java/com/tt/signaling/model/DeviceType.java

@@ -0,0 +1,6 @@
+package com.tt.signaling.model;
+
+public enum DeviceType {
+    CONTROLLER,
+    CONTROLLED
+}

WebRTCSignalServer/src/main/java/com/tt/signaling/model/SignalMessage.java

@@ -0,0 +1,30 @@
+package com.tt.signaling.model;
+
+import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
+
+@JsonIgnoreProperties(ignoreUnknown = true)
+public class SignalMessage {
+
+    private String type;           // OFFER, ANSWER, ICE_CANDIDATE, CONTROL_COMMAND, REGISTER, DEVICE_LIST
+    private String fromDeviceId;   // 发送方设备ID
+    private String toDeviceId;     // 目标设备ID
+    private String deviceType;     // CONTROLLER 或 CONTROLLED
+    private String payload;        // JSON格式的信令数据（SDP/ICE/控制指令）
+
+    public SignalMessage() {}
+
+    public String getType() { return type; }
+    public void setType(String type) { this.type = type; }
+
+    public String getFromDeviceId() { return fromDeviceId; }
+    public void setFromDeviceId(String fromDeviceId) { this.fromDeviceId = fromDeviceId; }
+
+    public String getToDeviceId() { return toDeviceId; }
+    public void setToDeviceId(String toDeviceId) { this.toDeviceId = toDeviceId; }
+
+    public String getDeviceType() { return deviceType; }
+    public void setDeviceType(String deviceType) { this.deviceType = deviceType; }
+
+    public String getPayload() { return payload; }
+    public void setPayload(String payload) { this.payload = payload; }
+}

WebRTCSignalServer/src/main/resources/application.yml

@@ -0,0 +1,11 @@
+server:
+  port: 8080
+
+spring:
+  application:
+    name: webrtc-signal-server
+
+logging:
+  level:
+    com.tt.signaling: DEBUG
+    org.springframework.web.socket: DEBUG