627 lines
19 KiB
Dart
627 lines
19 KiB
Dart
import 'dart:async';
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import 'dart:collection';
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import 'dart:convert';
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import 'package:connectivity/connectivity.dart';
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import 'package:flutter/foundation.dart';
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import 'package:shared_preferences/shared_preferences.dart';
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import 'package:uuid/uuid.dart';
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import 'package:web_socket_channel/web_socket_channel.dart';
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import 'package:wukongimfluttersdk/db/const.dart';
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import 'package:wukongimfluttersdk/db/wk_db_helper.dart';
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import 'package:wukongimfluttersdk/entity/channel.dart';
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import 'package:wukongimfluttersdk/entity/channel_member.dart';
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import 'package:wukongimfluttersdk/entity/msg.dart';
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import 'package:wukongimfluttersdk/manager/my_wk_socket_base.dart';
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import 'package:wukongimfluttersdk/manager/my_wk_socket_channel.dart';
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import 'package:wukongimfluttersdk/proto/write_read.dart';
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import 'package:wukongimfluttersdk/wkim.dart';
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import 'package:wukongimfluttersdk/common/crypto_utils.dart';
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import '../common/logs.dart';
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import '../entity/conversation.dart';
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import '../proto/packet.dart';
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import '../proto/proto.dart';
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import '../type/const.dart';
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class WKWebConnectionManager {
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WKWebConnectionManager._privateConstructor();
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static final WKWebConnectionManager _instance =
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WKWebConnectionManager._privateConstructor();
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static WKWebConnectionManager get shared => _instance;
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/// 是否登陆
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bool _isLogout = false;
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/// 是否断线重连 - 网络异常使用
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bool _isReconnection = false;
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Timer? socketConnectioningTimer;
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/// socket是否链接 - socket没有链接成功之前不会有心跳检测
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bool _isSocketConnectioning = false;
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/// 链接断开后几秒后重连
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final int reconnMilliseconds = 5000;
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/// 心跳计时器
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Timer? heartTimer;
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/// 心跳计时器 - 间隔时间
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final heartIntervalSecond = const Duration(seconds: 30);
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/// 网络状态计时器
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Timer? checkNetworkTimer;
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/// 网络状态计时器 - 间隔时间
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final checkNetworkSecond = const Duration(seconds: 1);
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/// 发送中消息集合
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final LinkedHashMap<int, SendingMsg> _sendingMsgMap = LinkedHashMap();
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/// 链接状态监听集合
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HashMap<String, Function(int, int?, ConnectionInfo?)>? _connectionListenerMap;
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/// Socket封装
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MyWkSocketBase? _socket;
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/// 添加链接状态监听 - 对外开放接口
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addOnConnectionStatus(String key, Function(int, int?, ConnectionInfo?) back) {
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_connectionListenerMap ??= HashMap();
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_connectionListenerMap![key] = back;
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}
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/// 移除链接状态监听 - 对外开放接口
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removeOnConnectionStatus(String key) {
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if (_connectionListenerMap != null) {
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_connectionListenerMap!.remove(key);
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}
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}
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/// 设置链接状态
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setConnectionStatus(int status, {int? reasoncode, ConnectionInfo? info}) {
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if (_connectionListenerMap != null) {
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_connectionListenerMap!.forEach((key, back) {
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back(status, reasoncode, info);
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});
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}
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}
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/// 链接 - socket
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connect() {
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var addr = WKIM.shared.options.addr;
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if ((addr == null || addr == "") && WKIM.shared.options.getAddr == null) {
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Logs.info("没有配置addr！");
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return;
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}
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if (WKIM.shared.options.uid == "" ||
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WKIM.shared.options.uid == null ||
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WKIM.shared.options.token == "" ||
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WKIM.shared.options.token == null) {
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Logs.error("没有初始化uid或token");
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return;
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}
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_isLogout = false;
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disconnect(_isLogout);
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if (WKIM.shared.options.getAddr != null) {
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WKIM.shared.options.getAddr!((String addr) {
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_socketConnect(addr);
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});
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} else {
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_socketConnect(addr!);
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}
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}
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/// 断开 - socket
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disconnect(bool isLogout) {
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_isLogout = true;
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if (_socket != null) {
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_socket!.close();
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}
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if (isLogout) {
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WKIM.shared.options.uid = '';
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WKIM.shared.options.token = '';
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WKIM.shared.messageManager.updateSendingMsgFail();
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/// 需要清理掉 _sendingMsgMap
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_sendingMsgMap.clear();
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WKDBHelper.shared.close();
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}
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_closeAll();
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WKIM.shared.connectionManager.setConnectionStatus(WKConnectStatus.fail);
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}
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/// 真正 - 链接 - Socket
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_socketConnect(String addr) {
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try {
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_isSocketConnectioning = true;
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setConnectionStatus(WKConnectStatus.connecting);
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var channl = WebSocketChannel.connect(Uri.parse(addr));
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_socket = MyWkSocketChannel.newSocket(channl);
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_connectSuccess();
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} catch (e) {
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_connectFail(e);
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Logs.error("websocket connect error, ${e.toString()}");
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}
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}
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/// socket 链接成功后 socket 添加监听
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_connectSuccess() {
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// 监听消息
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_socket?.listen(onData: (Uint8List data) {
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_cutDatas(data);
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}, onOpen: () {
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// 发送连接包
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_sendConnectPacket();
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}, error: () {
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if (_isLogout && !_isSocketConnectioning) {
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Logs.debug("登出了");
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return;
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}
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_startSocketConnectioningTimer();
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});
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_sendConnectPacket();
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}
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_startSocketConnectioningTimer() {
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_stopSocketConnectioningTimer();
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socketConnectioningTimer =
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Timer(Duration(milliseconds: reconnMilliseconds), () {
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_stopSocketConnectioningTimer();
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connect();
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});
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}
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_stopSocketConnectioningTimer() {
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if (socketConnectioningTimer != null) {
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socketConnectioningTimer!.cancel();
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socketConnectioningTimer = null;
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}
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}
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/// socket 链接失败 - 重新链接
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_connectFail(error) {
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_startSocketConnectioningTimer();
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}
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/// 测试 - CutData
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testCutData(Uint8List data) {
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_cutDatas(data);
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}
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/// 分包数据组装
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Uint8List? _cacheData;
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/// 接收分包数据
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_cutDatas(Uint8List data) {
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if (_cacheData == null || _cacheData!.isEmpty) {
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_cacheData = data;
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} else {
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// 上次存在未解析完的消息
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Uint8List temp = Uint8List(_cacheData!.length + data.length);
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for (var i = 0; i < _cacheData!.length; i++) {
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temp[i] = _cacheData![i];
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}
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for (var i = 0; i < data.length; i++) {
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temp[i + _cacheData!.length] = data[i];
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}
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_cacheData = temp;
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}
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Uint8List lastMsgBytes = _cacheData!;
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int readLength = 0;
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while (lastMsgBytes.isNotEmpty && readLength != lastMsgBytes.length) {
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readLength = lastMsgBytes.length;
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ReadData readData = ReadData(lastMsgBytes);
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var b = readData.readUint8();
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var packetType = b >> 4;
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if (PacketType.values[(b >> 4)] == PacketType.pong) {
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Logs.debug('pong');
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Uint8List bytes = lastMsgBytes.sublist(1, lastMsgBytes.length);
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_cacheData = lastMsgBytes = bytes;
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} else {
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if (packetType < 10) {
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if (lastMsgBytes.length < 5) {
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_cacheData = lastMsgBytes;
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break;
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}
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int remainingLength = readData.readVariableLength();
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if (remainingLength == -1) {
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//剩余长度被分包
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_cacheData = lastMsgBytes;
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break;
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}
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if (remainingLength > 1 << 21) {
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_cacheData = null;
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break;
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}
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List<int> bytes = encodeVariableLength(remainingLength);
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if (remainingLength + 1 + bytes.length > lastMsgBytes.length) {
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//半包情况
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_cacheData = lastMsgBytes;
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} else {
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Uint8List msg =
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lastMsgBytes.sublist(0, remainingLength + 1 + bytes.length);
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_decodePacket(msg);
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Uint8List temps =
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lastMsgBytes.sublist(msg.length, lastMsgBytes.length);
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_cacheData = lastMsgBytes = temps;
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}
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} else {
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_cacheData = null;
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// 数据包错误，重连
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connect();
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break;
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}
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}
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}
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}
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/// 解码出包
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_decodePacket(Uint8List data) {
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var packet = WKIM.shared.options.proto.decode(data);
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Logs.debug('解码出包->$packet');
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if (packet.header.packetType == PacketType.connack) {
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var connackPacket = packet as ConnackPacket;
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if (connackPacket.reasonCode == 1) {
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Logs.debug('连接成功！');
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WKIM.shared.options.protoVersion = connackPacket.serviceProtoVersion;
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CryptoUtils.setServerKeyAndSalt(
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connackPacket.serverKey, connackPacket.salt);
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setConnectionStatus(WKConnectStatus.success,
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reasoncode: connackPacket.reasonCode,
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info: ConnectionInfo(connackPacket.nodeId));
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try {
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WKIM.shared.conversationManager.setSyncConversation(() {
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setConnectionStatus(WKConnectStatus.syncCompleted);
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_resendMsg();
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});
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} catch (e) {
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Logs.error(e.toString());
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}
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_isSocketConnectioning = false;
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_startHeartTimer();
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_startCheckNetworkTimer();
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} else {
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setConnectionStatus(WKConnectStatus.fail,
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reasoncode: connackPacket.reasonCode);
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Logs.debug('连接失败！错误->${connackPacket.reasonCode}');
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}
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} else if (packet.header.packetType == PacketType.recv) {
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Logs.debug('收到消息');
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var recvPacket = packet as RecvPacket;
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_verifyRecvMsg(recvPacket);
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if (!recvPacket.header.noPersist) {
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_sendReceAckPacket(
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recvPacket.messageID, recvPacket.messageSeq, recvPacket.header);
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}
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} else if (packet.header.packetType == PacketType.sendack) {
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var sendack = packet as SendAckPacket;
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WKIM.shared.messageManager.updateSendResult(sendack.messageID,
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sendack.clientSeq, sendack.messageSeq, sendack.reasonCode);
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if (_sendingMsgMap.containsKey(sendack.clientSeq)) {
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_sendingMsgMap[sendack.clientSeq]!.isCanResend = false;
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}
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} else if (packet.header.packetType == PacketType.disconnect) {
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disconnect(true);
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setConnectionStatus(WKConnectStatus.kicked);
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} else if (packet.header.packetType == PacketType.pong) {
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Logs.info('pong...');
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}
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}
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/// 清理 socket 相关
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_closeAll() {
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_isReconnection = false;
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_isSocketConnectioning = false;
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_stopSocketConnectioningTimer();
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_stopCheckNetworkTimer();
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_stopHeartTimer();
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if (_socket != null) {
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_socket!.close();
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_socket = null;
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}
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}
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/// 发送接收确认包
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_sendReceAckPacket(BigInt messageID, int messageSeq, PacketHeader header) {
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RecvAckPacket ackPacket = RecvAckPacket();
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ackPacket.header.noPersist = header.noPersist;
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ackPacket.header.syncOnce = header.syncOnce;
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ackPacket.header.showUnread = header.showUnread;
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ackPacket.messageID = messageID;
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ackPacket.messageSeq = messageSeq;
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_sendPacket(ackPacket);
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}
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/// 链接成功后发送数据包
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_sendConnectPacket() async {
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CryptoUtils.init();
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var deviceID = await _getDeviceID();
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var connectPacket = ConnectPacket(
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uid: WKIM.shared.options.uid!,
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token: WKIM.shared.options.token!,
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version: WKIM.shared.options.protoVersion,
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clientKey: base64Encode(CryptoUtils.dhPublicKey!),
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deviceID: deviceID,
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clientTimestamp: DateTime.now().millisecondsSinceEpoch);
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connectPacket.deviceFlag = WKIM.shared.deviceFlagApp;
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_sendPacket(connectPacket);
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}
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/// 发送数据包
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_sendPacket(Packet packet) async {
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var data = WKIM.shared.options.proto.encode(packet);
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if (!_isReconnection) {
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await _socket?.send(data);
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}
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}
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/// 添加查看网络状态
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_startCheckNetworkTimer() {
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_stopCheckNetworkTimer();
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checkNetworkTimer = Timer.periodic(checkNetworkSecond, (timer) {
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Future<ConnectivityResult> connectivityResult =
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(Connectivity().checkConnectivity());
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connectivityResult.then((value) {
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if (value == ConnectivityResult.none) {
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_isReconnection = true;
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Logs.debug('网络断开了');
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_checkSedingMsg();
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setConnectionStatus(WKConnectStatus.noNetwork);
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} else {
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if (_isReconnection) {
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_isReconnection = false;
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connect();
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}
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}
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});
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});
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}
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/// 停止查看网络状态
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_stopCheckNetworkTimer() {
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if (checkNetworkTimer != null) {
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checkNetworkTimer!.cancel();
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checkNetworkTimer = null;
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}
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}
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/// 添加心跳检测
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_startHeartTimer() {
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_stopHeartTimer();
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heartTimer = Timer.periodic(heartIntervalSecond, (timer) {
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Logs.info('ping...');
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_sendPacket(PingPacket());
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});
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}
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/// 停止心跳检测
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_stopHeartTimer() {
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if (heartTimer != null) {
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heartTimer!.cancel();
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heartTimer = null;
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}
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}
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/// 发送消息
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sendMessage(WKMsg wkMsg) {
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SendPacket packet = SendPacket();
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packet.setting = wkMsg.setting;
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packet.header.noPersist = wkMsg.header.noPersist;
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packet.header.showUnread = wkMsg.header.redDot;
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packet.header.syncOnce = wkMsg.header.syncOnce;
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packet.channelID = wkMsg.channelID;
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packet.channelType = wkMsg.channelType;
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packet.clientSeq = wkMsg.clientSeq;
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packet.clientMsgNO = wkMsg.clientMsgNO;
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packet.topic = wkMsg.topicID;
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packet.expire = wkMsg.expireTime;
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packet.payload = wkMsg.content;
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_addSendingMsg(packet);
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_sendPacket(packet);
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}
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/// 验证接收到的消息
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_verifyRecvMsg(RecvPacket recvMsg) {
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StringBuffer sb = StringBuffer();
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sb.writeAll([
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recvMsg.messageID,
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recvMsg.messageSeq,
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recvMsg.clientMsgNO,
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recvMsg.messageTime,
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recvMsg.fromUID,
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recvMsg.channelID,
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recvMsg.channelType,
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recvMsg.payload
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]);
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var encryptContent = sb.toString();
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var result = CryptoUtils.aesEncrypt(encryptContent);
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String localMsgKey = CryptoUtils.generateMD5(result);
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if (recvMsg.msgKey != localMsgKey) {
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Logs.error('非法消息-->期望msgKey：$localMsgKey，实际msgKey：${recvMsg.msgKey}');
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return;
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} else {
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recvMsg.payload = CryptoUtils.aesDecrypt(recvMsg.payload);
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Logs.debug(recvMsg.toString());
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_saveRecvMsg(recvMsg);
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}
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}
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/// 保存接受到的消息
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_saveRecvMsg(RecvPacket recvMsg) async {
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WKMsg msg = WKMsg();
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msg.header.redDot = recvMsg.header.showUnread;
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msg.header.noPersist = recvMsg.header.noPersist;
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msg.header.syncOnce = recvMsg.header.syncOnce;
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msg.setting = recvMsg.setting;
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msg.channelType = recvMsg.channelType;
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msg.channelID = recvMsg.channelID;
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msg.content = recvMsg.payload;
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msg.messageID = recvMsg.messageID.toString();
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msg.messageSeq = recvMsg.messageSeq;
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msg.timestamp = recvMsg.messageTime;
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msg.fromUID = recvMsg.fromUID;
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msg.clientMsgNO = recvMsg.clientMsgNO;
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msg.expireTime = recvMsg.expire;
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if (msg.expireTime > 0) {
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msg.expireTimestamp = msg.expireTime + msg.timestamp;
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}
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msg.status = WKSendMsgResult.sendSuccess;
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msg.topicID = recvMsg.topic;
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msg.orderSeq = await WKIM.shared.messageManager
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.getMessageOrderSeq(msg.messageSeq, msg.channelID, msg.channelType);
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dynamic contentJson = jsonDecode(msg.content);
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msg.contentType = WKDBConst.readInt(contentJson, 'type');
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msg.isDeleted = _isDeletedMsg(contentJson);
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msg.messageContent = WKIM.shared.messageManager
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.getMessageModel(msg.contentType, contentJson);
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WKChannel? fromChannel = await WKIM.shared.channelManager
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.getChannel(msg.fromUID, WKChannelType.personal);
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if (fromChannel != null) {
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msg.setFrom(fromChannel);
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}
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if (msg.channelType == WKChannelType.group) {
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WKChannelMember? memberChannel = await WKIM.shared.channelMemberManager
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.getMember(msg.channelID, WKChannelType.group, msg.fromUID);
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if (memberChannel != null) {
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msg.setMemberOfFrom(memberChannel);
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}
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}
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WKIM.shared.messageManager.parsingMsg(msg);
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if (msg.isDeleted == 0 &&
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!msg.header.noPersist &&
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msg.contentType != WkMessageContentType.insideMsg) {
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int row = await WKIM.shared.messageManager.saveMsg(msg);
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msg.clientSeq = row;
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WKUIConversationMsg? uiMsg = await WKIM.shared.conversationManager
|
||
.saveWithLiMMsg(msg, msg.header.redDot ? 1 : 0);
|
||
if (uiMsg != null) {
|
||
List<WKUIConversationMsg> list = [];
|
||
list.add(uiMsg);
|
||
WKIM.shared.conversationManager.setRefreshUIMsgs(list);
|
||
}
|
||
} else {
|
||
Logs.debug(
|
||
'消息不能存库:is_deleted=${msg.isDeleted},no_persist=${msg.header.noPersist},content_type:${msg.contentType}');
|
||
}
|
||
if (msg.contentType != WkMessageContentType.insideMsg) {
|
||
List<WKMsg> list = [];
|
||
list.add(msg);
|
||
WKIM.shared.messageManager.pushNewMsg(list);
|
||
}
|
||
}
|
||
|
||
/// 是否删除消息
|
||
int _isDeletedMsg(dynamic jsonObject) {
|
||
int isDelete = 0;
|
||
if (jsonObject != null) {
|
||
var visibles = jsonObject['visibles'];
|
||
if (visibles != null && visibles is List) {
|
||
bool isIncludeLoginUser = false;
|
||
for (int i = 0, size = visibles.length; i < size; i++) {
|
||
if (visibles[i] == WKIM.shared.options.uid) {
|
||
isIncludeLoginUser = true;
|
||
break;
|
||
}
|
||
}
|
||
isDelete = isIncludeLoginUser ? 0 : 1;
|
||
}
|
||
}
|
||
return isDelete;
|
||
}
|
||
|
||
/// 重发消息
|
||
_resendMsg() async {
|
||
_removeSendingMsg();
|
||
if (_sendingMsgMap.isNotEmpty) {
|
||
for (var entry in _sendingMsgMap.entries) {
|
||
if (entry.value.isCanResend) {
|
||
Logs.debug("重发消息：${entry.value.sendPacket.clientSeq}");
|
||
await _sendPacket(entry.value.sendPacket);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
/// 添加发送中消息
|
||
_addSendingMsg(SendPacket sendPacket) {
|
||
_removeSendingMsg();
|
||
_sendingMsgMap[sendPacket.clientSeq] = SendingMsg(sendPacket);
|
||
}
|
||
|
||
/// 删除发送中消息
|
||
_removeSendingMsg() {
|
||
if (_sendingMsgMap.isNotEmpty) {
|
||
List<int> ids = [];
|
||
_sendingMsgMap.forEach((key, sendingMsg) {
|
||
if (!sendingMsg.isCanResend) {
|
||
ids.add(key);
|
||
}
|
||
});
|
||
if (ids.isNotEmpty) {
|
||
for (var i = 0; i < ids.length; i++) {
|
||
_sendingMsgMap.remove(ids[i]);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
/// 查看正在发送中的消息 - 未发送成功 - 尝试重新发送 - 或者设置发送失败
|
||
_checkSedingMsg() {
|
||
if (_sendingMsgMap.isNotEmpty) {
|
||
final it = _sendingMsgMap.entries.iterator;
|
||
while (it.moveNext()) {
|
||
var key = it.current.key;
|
||
var wkSendingMsg = it.current.value;
|
||
if (wkSendingMsg.sendCount == 5 && wkSendingMsg.isCanResend) {
|
||
WKIM.shared.messageManager.updateMsgStatusFail(key);
|
||
wkSendingMsg.isCanResend = false;
|
||
} else {
|
||
var nowTime =
|
||
(DateTime.now().millisecondsSinceEpoch / 1000).truncate();
|
||
if (nowTime - wkSendingMsg.sendTime > 10) {
|
||
wkSendingMsg.sendTime =
|
||
(DateTime.now().millisecondsSinceEpoch / 1000).truncate();
|
||
wkSendingMsg.sendCount++;
|
||
_sendingMsgMap[key] = wkSendingMsg;
|
||
_sendPacket(wkSendingMsg.sendPacket);
|
||
Logs.debug("消息发送失败，尝试重发中...");
|
||
}
|
||
}
|
||
}
|
||
|
||
_removeSendingMsg();
|
||
}
|
||
}
|
||
}
|
||
|
||
/// 获取设备ID
|
||
Future<String> _getDeviceID() async {
|
||
SharedPreferences preferences = await SharedPreferences.getInstance();
|
||
String wkUid = WKIM.shared.options.uid!;
|
||
String key = "${wkUid}_device_id";
|
||
var deviceID = preferences.getString(key);
|
||
if (deviceID == null || deviceID == "") {
|
||
deviceID = const Uuid().v4().toString().replaceAll("-", "");
|
||
preferences.setString(key, deviceID);
|
||
}
|
||
return "${deviceID}F";
|
||
}
|
||
|
||
/// 发送消息对象
|
||
class SendingMsg {
|
||
SendPacket sendPacket;
|
||
int sendCount = 0;
|
||
int sendTime = 0;
|
||
bool isCanResend = true;
|
||
SendingMsg(this.sendPacket) {
|
||
sendTime = (DateTime.now().millisecondsSinceEpoch / 1000).truncate();
|
||
}
|
||
}
|
||
|
||
/// 监听链接对象返回对象
|
||
class ConnectionInfo {
|
||
int nodeId;
|
||
ConnectionInfo(this.nodeId);
|
||
}
|