network: Fix 0.0 FPS bug on Android (Part 2)

- Add network interface enumeration support for Android
- Implement fallback loopback interface when no interfaces are detected
- Add ability to force offline mode on critical network errors
- Improve socket initialization with better error handling
- Add socket state tracking (domain, type, protocol)
- Make translation functions static and mark as maybe_unused
- Add detailed logging for network initialization failures

Part 2 of the Android FPS bug fix focuses on network resilience,
particularly handling cases where network initialization fails.
Instead of hanging the emulator, it now gracefully falls back to
offline mode and provides better diagnostic information.

1 files changed, 26 insertions, 0 deletions

diff --git a/src/android/app/src/main/java/org/citron/citron_emu/NativeLibrary.kt b/src/android/app/src/main/java/org/citron/citron_emu/NativeLibrary.kt
index fc63dc276..c61230906 100644
--- a/src/android/app/src/main/java/org/citron/citron_emu/NativeLibrary.kt
+++ b/src/android/app/src/main/java/org/citron/citron_emu/NativeLibrary.kt
@@ -21,6 +21,7 @@ import org.citron.citron_emu.utils.Log
 import org.citron.citron_emu.model.InstallResult
 import org.citron.citron_emu.model.Patch
 import org.citron.citron_emu.model.GameVerificationResult
+import java.net.NetworkInterface
 
 /**
  * Class which contains methods that interact
@@ -459,4 +460,29 @@ object NativeLibrary {
      * Checks if all necessary keys are present for decryption
      */
     external fun areKeysPresent(): Boolean
+
+    fun getNetworkInterfaces(): Array<String> {
+        val interfaceList = mutableListOf<String>()
+        try {
+            NetworkInterface.getNetworkInterfaces()?.toList()?.forEach { iface ->
+                if (iface.isUp && !iface.isLoopback) {
+                    iface.inetAddresses.toList()
+                        .filterNot { it.isLoopbackAddress }
+                        .forEach { addr ->
+                            interfaceList.add("${iface.name};${addr.hostAddress}")
+                        }
+                }
+            }
+        } catch (e: Exception) {
+            Log.error("[NativeLibrary] Failed to enumerate network interfaces: ${e.message}")
+        }
+
+        // Always ensure we have at least a loopback interface
+        if (interfaceList.isEmpty()) {
+            Log.warning("[NativeLibrary] No interfaces found, adding loopback fallback")
+            interfaceList.add("lo;127.0.0.1")
+        }
+
+        return interfaceList.toTypedArray()
+    }
 }