Initial commit: 风影 OA 全栈源码（API/Web/Flutter/IM）

含 Phase 1.1 IM seq 排序、断线重连、多端已读同步与微信式语音转文字 UI。排除 node_modules、构建产物、安装包与 .env 密钥。 Co-authored-by: Cursor <cursoragent@cursor.com>
2026-09-02 10:04:03 +00:00
commit 76f266645d
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+import 'dart:convert';
+import 'dart:typed_data';
+
+/// MobileIMSDK 官方 TCP 帧：4 字节大端长度 + UTF-8 JSON Protocal。
+class ClientType {
+  static const login = 0;
+  static const keepAlive = 1;
+  static const commonData = 2;
+  static const logout = 3;
+  static const received = 4;
+  static const echo = 5;
+}
+
+class ServerType {
+  static const login = 50;
+  static const keepAlive = 51;
+  static const error = 52;
+  static const echo = 53;
+  static const kickout = 54;
+}
+
+class Protocal {
+  Protocal({
+    required this.type,
+    this.dataContent = '',
+    this.from = '0',
+    this.to = '0',
+    this.fp,
+    this.qos = false,
+    this.typeu = -1,
+    this.sm = -1,
+  });
+
+  int type;
+  String dataContent;
+  String from;
+  String to;
+  String? fp;
+  bool qos;
+  int typeu;
+  int sm;
+
+  Map<String, dynamic> toJson() => {
+        'bridge': false,
+        'type': type,
+        'dataContent': dataContent,
+        'from': from,
+        'to': to,
+        'fp': fp,
+        'QoS': qos,
+        'typeu': typeu,
+        'sm': sm,
+      };
+
+  factory Protocal.fromJson(Map<String, dynamic> j) => Protocal(
+        type: (j['type'] as num?)?.toInt() ?? 0,
+        dataContent: '${j['dataContent'] ?? ''}',
+        from: '${j['from'] ?? '0'}',
+        to: '${j['to'] ?? '0'}',
+        fp: j['fp']?.toString(),
+        qos: j['QoS'] == true || j['qos'] == true,
+        typeu: (j['typeu'] as num?)?.toInt() ?? -1,
+        sm: (j['sm'] as num?)?.toInt() ?? -1,
+      );
+}
+
+Uint8List encodeFrame(Protocal p) {
+  final body = utf8.encode(jsonEncode(p.toJson()));
+  final header = ByteData(4)..setUint32(0, body.length);
+  return Uint8List.fromList([...header.buffer.asUint8List(), ...body]);
+}
+
+const maxBody = 6 * 1024;