64 lines
1.3 KiB
Dart
64 lines
1.3 KiB
Dart
import 'dart:async';
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import 'dart:io';
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import 'package:logger/logger.dart';
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Logger logger = Logger();
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class RoomWebSocket {
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///单例设计模式
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RoomWebSocket._();
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static final RoomWebSocket _instance = RoomWebSocket._();
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factory RoomWebSocket() => _instance;
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/// WebSocket和心跳定时器
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String url = "";
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WebSocket? _socket;
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Timer? _heartbeatTimer;
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///用 StreamController 分化消息给订阅者
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final StreamController<Map<String, dynamic>> _msgController = StreamController.broadcast();
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Stream<Map<String, dynamic>> get stream => _msgController.stream;
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///开始连接
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Future<void> connect() async {
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try {
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_socket = await WebSocket.connect(url);
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//监听消息
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_socket!.listen(
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(data) {},
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onDone: () {},
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onError: (_) {
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logger.e("连接异常断开");
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},
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);
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//心跳
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_heartbeatTimer?.cancel();
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_heartbeatTimer = Timer.periodic(Duration(seconds: 15), (_) {
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logger.i("发送心跳");
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});
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} catch (e) {
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_reconnect();
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}
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}
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///发送指令
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void send() {
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_socket!.add("");
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}
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///连接错误事件
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void _reconnect() {
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logger.e("连接错误");
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Future.delayed(Duration(seconds: 3), connect);
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}
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void dispose() {
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_heartbeatTimer?.cancel();
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_socket?.close();
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_msgController.close();
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}
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}
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