♻️ Splitting up ipc servers in unix and windows

lib/pods/activity/ipc_server.dart

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+import 'dart:async';
+import 'dart:convert';
+import 'dart:typed_data';
+
+const String kRpcIpcLogPrefix = 'arRPC.ipc';
+
+// IPC Packet Types
+class IpcTypes {
+  static const int handshake = 0;
+  static const int frame = 1;
+  static const int close = 2;
+  static const int ping = 3;
+  static const int pong = 4;
+}
+
+// IPC Close Codes
+class IpcCloseCodes {
+  static const int closeNormal = 1000;
+  static const int closeUnsupported = 1003;
+  static const int closeAbnormal = 1006;
+}
+
+// IPC Error Codes
+class IpcErrorCodes {
+  static const int invalidClientId = 4000;
+  static const int invalidOrigin = 4001;
+  static const int rateLimited = 4002;
+  static const int tokenRevoked = 4003;
+  static const int invalidVersion = 4004;
+  static const int invalidEncoding = 4005;
+}
+
+// IPC Packet structure
+class IpcPacket {
+  final int type;
+  final Map<String, dynamic> data;
+
+  IpcPacket(this.type, this.data);
+}
+
+// Abstract base class for IPC server
+abstract class IpcServer {
+  final List<IpcSocketWrapper> _sockets = [];
+
+  // Encode IPC packet
+  static Uint8List encodeIpcPacket(int type, Map<String, dynamic> data) {
+    final jsonData = jsonEncode(data);
+    final dataBytes = utf8.encode(jsonData);
+    final dataSize = dataBytes.length;
+
+    final buffer = ByteData(8 + dataSize);
+    buffer.setInt32(0, type, Endian.little);
+    buffer.setInt32(4, dataSize, Endian.little);
+    buffer.buffer.asUint8List().setRange(8, 8 + dataSize, dataBytes);
+
+    return buffer.buffer.asUint8List();
+  }
+
+  Future<void> start();
+  Future<void> stop();
+
+  void addSocket(IpcSocketWrapper socket) {
+    _sockets.add(socket);
+  }
+
+  void removeSocket(IpcSocketWrapper socket) {
+    _sockets.remove(socket);
+  }
+
+  List<IpcSocketWrapper> get sockets => _sockets;
+
+  void Function(
+    IpcSocketWrapper socket,
+    IpcPacket packet,
+    Map<String, Function> handlers,
+  )?
+  handlePacket;
+}
+
+// Abstract base class for IPC socket wrapper
+abstract class IpcSocketWrapper {
+  String clientId = '';
+  bool handshook = false;
+  final List<int> _buffer = [];
+
+  void addData(List<int> data) {
+    _buffer.addAll(data);
+  }
+
+  void send(Map<String, dynamic> msg);
+  void sendPong(dynamic data);
+  void close();
+  void closeWithCode(int code, [String message = '']);
+
+  List<IpcPacket> readPackets() {
+    final packets = <IpcPacket>[];
+
+    while (_buffer.length >= 8) {
+      final buffer = Uint8List.fromList(_buffer);
+      final byteData = ByteData.view(buffer.buffer);
+
+      final type = byteData.getInt32(0, Endian.little);
+      final dataSize = byteData.getInt32(4, Endian.little);
+
+      if (_buffer.length < 8 + dataSize) break;
+
+      final dataBytes = _buffer.sublist(8, 8 + dataSize);
+      final jsonStr = utf8.decode(dataBytes);
+      final jsonData = jsonDecode(jsonStr);
+
+      packets.add(IpcPacket(type, jsonData));
+
+      _buffer.removeRange(0, 8 + dataSize);
+    }
+
+    return packets;
+  }
+}