Dart and Flutter Integration

Dart and Flutter Integration

import 'dart:ffi';
import 'package:ffi/ffi.dart';

typedef GetStatusNative = Pointer<Utf8> Function();
typedef GetStatusDart = Pointer<Utf8> Function();
typedef FreeNative = Void Function(Pointer<Utf8>);
typedef FreeDart = void Function(Pointer<Utf8>);

final library = DynamicLibrary.open('xray-windows-amd64.dll');
final getStatus =
    library.lookupFunction<GetStatusNative, GetStatusDart>('GetStatus');
final freeCString =
    library.lookupFunction<FreeNative, FreeDart>('FreeCString');

String take(Pointer<Utf8> pointer) {
  if (pointer == nullptr) {
    throw StateError('Unexpected null native string');
  }
  try {
    return pointer.toDartString();
  } finally {
    freeCString(pointer);
  }
}

Run latency tests, geo downloads, validation of large configurations, and other blocking work away from the Flutter UI isolate.

Bundle the correct DLL/SO for each target architecture and resolve it by an application-controlled absolute path.