350 lines
9.7 KiB
JavaScript
350 lines
9.7 KiB
JavaScript
import {
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ref,
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onMounted,
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onBeforeUnmount
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} from 'vue';
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const useWebSocket = (options = {}) => {
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const {
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heartbeatInterval = 10000, //心跳是10秒一次
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reconnectInterval = 3000, //重新连接间隔时间的一个参数
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maxReconnectAttempts = 3, //最大重连接次数
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initialReconnectInterval = 3000, // 初始重连间隔
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initMessage,
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initMessageRetryCount = 3, // 新增：初始化消息发送重试次数
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initMessageRetryInterval = 2000, // 新增：初始化消息重试间隔
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maxReconnectDuration = Infinity
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} = options;
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const autoReconnect = ref(true); //是否自动重新连接
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const socketTask = ref(null);
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const isConnected = ref(false); //表示是否已连接上。
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const heartbeatTimer = ref(null); //心跳定时器
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const reconnectTimer = ref(null); //重连定时器
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const reconnectAttempts = ref(0); //重连的尝试次数
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const isNetworkConnected = ref(true); //监听当前网络连接状态
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const isManuallyClosed = ref(false); //是否是被手动关闭的
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const receivedMessages = ref(); //储从 WebSocket 服务器接收到的消息
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const initMessageSendAttempts = ref(0); //初始化连接多少次
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const reconnectStartTime = ref(0); //新增：记录重连开始时间
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const isPongReceived = ref(false)
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const allowReconnect = ref(true); // 新增：控制是否允许重连
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// 关闭现有连接并清理资源
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const closeExistingConnection = () => {
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if (socketTask.value) {
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// 关闭 WebSocket 连接
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socketTask.value.close({
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success: () => {
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console.log('WebSocket 连接已关闭');
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},
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fail: (err) => {
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console.error('关闭 WebSocket 连接失败:', err);
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}
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});
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// 清除心跳定时器
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clearInterval(heartbeatTimer.value);
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heartbeatTimer.value = null;
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// 清除重连定时器
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clearTimeout(reconnectTimer.value);
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reconnectTimer.value = null;
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// 标记连接已断开
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isConnected.value = false;
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}
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};
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// 连接 WebSocket
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const connect = () => {
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if (!isNetworkConnected.value) {
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uni.showToast({
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title: '网络未连接...',
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icon: 'none'
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})
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setTimeout(() => {
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uni.pro.switchTab('index/index')
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}, 1000)
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console.log('网络未连接，暂不尝试连接 WebSocket');
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return;
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}
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// 关闭现有连接并清理资源
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closeExistingConnection();
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socketTask.value = uni.connectSocket({
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url: uni.conf.baseUrlwws,
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success: (res) => {
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isConnected.value = true;
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// 监听初始化成功在开启心跳
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startHeartbeat();
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},
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fail: () => {
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console.error('WebSocket 连接失败，尝试重连');
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if (autoReconnect.value && allowReconnect.value) {
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handleReconnect();
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}
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}
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});
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if (socketTask.value) {
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socketTask.value.onOpen(() => {
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// 初始化 初始购物车
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sendMessage(initMessage)
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});
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socketTask.value.onMessage((res) => {
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receivedMessages.value = JSON.parse(res.data)
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// receivedMessages.value.push(list);
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if (receivedMessages.value == 'ok' || receivedMessages.value.operate_type == 'init') {
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console.log('初始化正常，心跳响应正常');
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// 清除重连定时器
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clearTimeout(reconnectTimer.value);
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allowReconnect.value = false
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reconnectTimer.value = null;
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}
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});
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socketTask.value.onClose((res) => {
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console.log(res, 'WebSocket 连接已关闭，尝试重连');
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isConnected.value = false;
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clearInterval(heartbeatTimer.value); // 停止心跳定时器
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clearTimeout(reconnectTimer.value); // 清除重连定时器
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if (res.code == '1006' && !allowReconnect.value) {
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uni.showToast({
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title: '网络异常，请重新扫码',
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icon: 'none'
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});
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autoReconnect.value = false;
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setTimeout(() => {
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uni.pro.switchTab('index/index');
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}, 1000)
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return false;
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}
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if (autoReconnect.value && !isManuallyClosed.value) {
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handleReconnect();
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}
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});
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socketTask.value.onError((err) => {
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console.error('WebSocket 连接发生错误:', err);
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isConnected.value = false;
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clearInterval(heartbeatTimer.value);
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if (autoReconnect.value && !isManuallyClosed.value) {
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handleReconnect();
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}
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});
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} else {
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console.error('socketTask 未正确初始化');
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}
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};
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// 启动心跳机制
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const startHeartbeat = () => {
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if (!isNetworkConnected.value) {
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console.log('网络未连接，暂停心跳');
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uni.showToast({
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title: '网络未连接...',
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icon: 'none'
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});
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setTimeout(() => {
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uni.pro.switchTab('index/index');
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}, 1000);
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return;
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}
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heartbeatTimer.value = setInterval(() => {
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if (isConnected.value) {
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console.log('发送心跳消息');
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isPongReceived.value = false; // 每次发送心跳消息前重置标记
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socketTask.value.send({
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data: JSON.stringify({
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type: 'ping_interval',
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set: 'shopping'
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}),
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success: () => {
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console.log('心跳消息发送成功');
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const pongTimer = setTimeout(() => {
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if (!isPongReceived.value) {
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console.error('心跳超时，未收到响应，尝试重连');
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clearInterval(heartbeatTimer.value);
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if (autoReconnect.value && reconnectAttempts.value <
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maxReconnectAttempts && allowReconnect.value) {
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handleReconnect();
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} else {
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console.error('重连次数达到上限，停止重连和心跳');
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clearInterval(heartbeatTimer.value);
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autoReconnect.value = false;
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uni.pro.switchTab('index/index');
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}
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}
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}, heartbeatInterval * 1.2);
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const handlePong = (res) => {
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try {
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let data = JSON.parse(res.data);
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if (data.operate_type == "init" || (data.msg === 'ok' &&
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data.msg_id ==
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'ping_interval')) {
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isPongReceived.value = true;
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console.log('收到心跳响应，清除超时定时器');
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clearTimeout(pongTimer);
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}
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} catch (error) {
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console.error('解析心跳响应数据时出错:', error);
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}
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};
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socketTask.value.onMessage(handlePong);
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},
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fail: () => {
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console.error('心跳消息发送失败，尝试重连');
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clearInterval(heartbeatTimer.value);
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if (autoReconnect.value && reconnectAttempts.value <
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maxReconnectAttempts && allowReconnect.value) {
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handleReconnect();
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} else {
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console.error('重连次数达到上限，停止重连和心跳');
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clearInterval(heartbeatTimer.value);
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autoReconnect.value = false;
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uni.pro.switchTab('index/index');
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}
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}
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});
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}
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}, heartbeatInterval);
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};
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// 手动关闭连接
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const closeSocket = () => {
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isManuallyClosed.value = true;
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closeExistingConnection();
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};
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// 发送消息
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const sendMessage = async (data) => {
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if (isConnected.value) {
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await socketTask.value.send({
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data: JSON.stringify(data),
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success: () => {
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// console.log('消息发送成功');
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},
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fail: () => {
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// console.error('消息发送失败');
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}
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});
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} else {
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console.error('WebSocket 未连接，无法发送消息');
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}
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};
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// 处理重连逻辑
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const handleReconnect = () => {
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if (!isNetworkConnected.value) {
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console.log('网络未连接，暂停重连');
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return;
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}
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if (isManuallyClosed.value) {
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console.log('手动关闭连接，不进行重连');
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return;
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}
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if (!allowReconnect.value) {
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console.log('重连功能已关闭，不进行重连');
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return;
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}
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if (reconnectAttempts.value < maxReconnectAttempts) {
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reconnectAttempts.value++;
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const reconnectInterval = initialReconnectInterval * Math.pow(2, reconnectAttempts.value - 1);
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const randomizedInterval = reconnectInterval + Math.floor(Math.random() * 1000);
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uni.showLoading({
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title: `正在努力连接..`,
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mask: true
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})
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console.log(`尝试第 ${reconnectAttempts.value} 次重连，重连间隔: ${randomizedInterval}ms...`);
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reconnectTimer.value = setTimeout(() => {
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connect();
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}, randomizedInterval);
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} else {
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console.error('重连次数达到上限，停止重连');
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uni.showToast({
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title: '重连次数达到上限，停止重连',
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icon: 'none'
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});
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clearInterval(heartbeatTimer.value);
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autoReconnect.value = false;
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setTimeout(() => {
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uni.hideLoading();
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uni.pro.switchTab('index/index');
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}, 1000)
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}
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};
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// / 网络状态监听
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const initNetworkListener = () => {
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uni.getSystemInfo({
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success: (res) => {
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if (res.platform !== 'devtools') {
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uni.onNetworkStatusChange((statusRes) => {
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isNetworkConnected.value = statusRes.isConnected;
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if (statusRes.isConnected && !isManuallyClosed.value) {
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console.log('网络已连接，尝试重新连接 WebSocket');
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if (!isConnected.value && autoReconnect.value) {
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connect();
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}
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} else if (!statusRes.isConnected) {
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console.log('网络已断开，暂停 WebSocket 操作');
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clearInterval(heartbeatTimer.value);
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clearTimeout(reconnectTimer.value);
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if (socketTask.value) {
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socketTask.value.close();
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isConnected.value = false;
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}
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}
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});
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}
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},
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fail: (err) => {
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console.error('获取系统信息失败:', err);
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}
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});
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uni.getNetworkType({
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success: (res) => {
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isNetworkConnected.value = res.networkType !== 'none';
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if (!isNetworkConnected.value) {
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console.log('初始网络未连接，暂不尝试连接 WebSocket');
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}
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}
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});
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};
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// 页面显示，尝试连接 WebSocket
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const onShowconnect = () => {
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if (autoReconnect.value) {
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uni.showLoading({
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title: `尝试再次连接`,
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mask: true
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})
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connect();
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}
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}
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onBeforeUnmount(() => {
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closeSocket();
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});
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return {
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isConnected,
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sendMessage,
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closeSocket,
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receivedMessages,
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closeExistingConnection,
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onShowconnect,
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initNetworkListener
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};
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};
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export default useWebSocket; |