fix(android): release mode bugs: unavailable server and socket repeating

android/src/main/AndroidManifest.xml

@@ -12,6 +12,8 @@
     <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
     <!-- to save the received files -->
     <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
+    <!-- to use sockets for data transfer -->
+    <uses-permission android:name="android.permission.INTERNET" />
 
     <uses-feature
         android:name="android.hardware.wifi.direct"

lib/src/platforms/android/socket_service/nearby_socket_service.dart

@@ -134,6 +134,7 @@ class NearbySocketService {
     required NearbyServiceMessagesListener socketListener,
     required NearbyConnectionAndroidInfo info,
   }) async {
+    if (state.value.isLoading) {
       final response = await _network.pingServer(
         address: info.ownerIpAddress,
         port: _androidData.port,
@@ -158,6 +159,7 @@ class NearbySocketService {
         });
       }
     }
+  }
 
   Future<void> _startServerSubscription({
     required NearbyServiceMessagesListener socketListener,