Fix glitch on capture start via intent-based API

When a user allows an app permanent capture control, starting the capture
caused the control permission dialog to be shown briefly, causing a glitch.
This is caused by the SOCKS5 host resolution logic introduced in 6d7708e.
To fix this, SOCKS5 host resolution is now disabled in the intent-based API

app/src/main/java/com/emanuelef/remote_capture/CaptureHelper.java

@@ -43,11 +43,13 @@ public class CaptureHelper {
     private static final String TAG = "CaptureHelper";
     private final ComponentActivity mActivity;
     private final ActivityResultLauncher<Intent> mLauncher;
+    private final boolean mResolveHosts;
     private CaptureSettings mSettings;
     private CaptureStartListener mListener;
 
-    public CaptureHelper(ComponentActivity activity) {
+    public CaptureHelper(ComponentActivity activity, boolean resolve_hosts) {
         mActivity = activity;
+        mResolveHosts = resolve_hosts;
         mLauncher = activity.registerForActivityResult(
                 new ActivityResultContracts.StartActivityForResult(), this::captureServiceResult);
     }
@@ -97,6 +99,11 @@ public class CaptureHelper {
     }
 
     private void resolveHosts() {
+        if (!mResolveHosts) {
+            startCaptureOk();
+            return;
+        }
+
         final Handler handler = new Handler(Looper.getMainLooper());
 
         (new Thread(() -> {

app/src/main/java/com/emanuelef/remote_capture/activities/CaptureCtrl.java

@@ -98,7 +98,7 @@ public class CaptureCtrl extends AppCompatActivity {
         getWindow().addFlags(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_HIDDEN);
         super.onCreate(savedInstanceState);
 
-        mCapHelper = new CaptureHelper(this);
+        mCapHelper = new CaptureHelper(this, false);
         mCapHelper.setListener(success -> {
             setResult(success ? RESULT_OK : RESULT_CANCELED, null);
             finish();

app/src/main/java/com/emanuelef/remote_capture/activities/MainActivity.java

@@ -161,7 +161,7 @@ public class MainActivity extends BaseActivity implements NavigationView.OnNavig
         initAppState();
         checkPermissions();
 
-        mCapHelper = new CaptureHelper(this);
+        mCapHelper = new CaptureHelper(this, true);
         mCapHelper.setListener(success -> {
             if(!success) {
                 Log.w(TAG, "Capture start failed");

docs/app_api.md

@@ -85,7 +85,7 @@ As shown above, the capture settings can be specified by using intent extras. Th
 | http_server_port        | int    |     |      | the HTTP server port in http_server mode                           |
 | pcap_uri                | string |     |      | the URI for the PCAP dump in pcap_file mode (overrides pcap_name)  |
 | socks5_enabled          | bool   |     | vpn  | true to redirect the TCP connections to a SOCKS5 proxy             |
-| socks5_proxy_ip_address | string |     | vpn  | the SOCKS5 proxy host                                              |
+| socks5_proxy_ip_address | string |     | vpn  | the SOCKS5 proxy IP address                                        |
 | socks5_proxy_port       | int    |     | vpn  | the SOCKS5 proxy port                                              |
 | root_capture            | bool   |     |      | true to capture packets in root mode, false to use the VPNService  |
 | pcapdroid_trailer       | bool   |     |      | true to enable the PCAPdroid trailer                               |