项目备份
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609
module/newWebRtcSync.js
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609
module/newWebRtcSync.js
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/**
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* 【发起方】
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1. 创建 PeerConnection
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2. 采集本地流并添加到 PeerConnection
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3. 调用 createOffer() → 生成Offer
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4. 调用 setLocalDescription(offer) → 开始收集ICE候选
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5. 通过信令发送Offer给接收方
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6. 监听 onicecandidate → 发送ICE候选给接收方
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7. 接收接收方的Answer → 调用 setRemoteDescription(answer)
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8. 接收接收方的ICE候选 → 调用 addIceCandidate(candidate)
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【接收方】
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1. 创建 PeerConnection
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2. 接收发起方的Offer → 调用 setRemoteDescription(offer)
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3. 调用 createAnswer() → 生成Answer
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4. 调用 setLocalDescription(answer) → 开始收集ICE候选
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5. 通过信令发送Answer给发起方
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6. 监听 onicecandidate → 发送ICE候选给发起方
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7. 接收发起方的ICE候选 → 调用 addIceCandidate(candidate)
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*/
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/**
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* WebRTC 核心封装类(ES6 模块化)
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* 支持音视频互通、自定义数据传输、外部流管理
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* 开箱即用,无需额外依赖
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*/
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export class WebRTC_ModuleSimple {
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/**
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* 构造函数
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* @param {Object} options 初始化配置
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* @param {HTMLElement} options.localVideo 本地视频播放元素
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* @param {HTMLElement} options.remoteVideo 远端视频播放元素
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* @param {string} options.dataChannelLabel 数据通道标签(默认 'chat')
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* @param {Function} receivepeerCallback 回调函数
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*/
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constructor(options = {}) {
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this.current_time = new Date();
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// 基础配置
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this.config = {
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localVideo: options.localVideo,
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remoteVideo: options.remoteVideo,
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dataChannelLabel: options.dataChannelLabel || "chat",
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iceServers: [
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{ urls: "stun:stun.l.google.com:19302" },
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{ urls: "stun:stun.cloudflare.com:3478" },
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],
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};
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// WebRTC 核心对象
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this.peerConnection = null;
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this.dataChannel = null;
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// 媒体流管理
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this.localStream = null; // 本地流(可外部传入/获取)
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this.remoteStream = null; // 远端流(可外部获取)
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// 事件回调(外部可自定义)
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this.callbacks = {
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onIceCandidate: (candidate) => {}, // ICE 候选生成
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onConnectSuccess: () => {}, // 连接成功
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onConnectFailed: () => {}, // 连接失败
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onRemoteStream: (stream) => {}, // 收到远端流
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onMessage: (data) => {}, // 收到自定义消息
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onClose: () => {}, // 连接关闭
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onState: (state) => {},
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};
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// 初始化 PeerConnection
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this._initPeerConnection();
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}
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/**
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* 初始化 RTCPeerConnection 核心对象
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* @private
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*/
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_initPeerConnection() {
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try {
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// 销毁旧实例
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if (this.peerConnection) {
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this.peerConnection.close();
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}
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// 浏览器兼容处理
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const RTCPeerConnection =
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window.RTCPeerConnection ||
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window.mozRTCPeerConnection ||
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window.webkitRTCPeerConnection;
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this.peerConnection = new RTCPeerConnection({
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iceServers: this.config.iceServers,
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});
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// 监听信令协商状态
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this.signalingStateListener();
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// 监听远程信息
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this.peerConnectionLisioner();
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} catch (error) {
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console.error("WebRTC 初始化失败:", error);
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this.callbacks.onConnectFailed();
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}
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}
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// 监听信令状态变化(Offer/Answer/Ice 协商)
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signalingStateListener() {
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// 初始状态打印
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console.warn(
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`[webRTC]${this.current_time.toLocaleTimeString()}初始信令状态:`,
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this.peerConnection.signalingState,
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);
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// 监听信令状态变化(Offer/Answer 协商)
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this.peerConnection.onsignalingstatechange = () => {
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/**
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* 信令状态枚举值（全阶段）
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* new 初始状态
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* have-local-offer 本地已设置 Offer 发起者：已调用 createOffer() + setLocalDescription(offer)
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* have-remote-offer 远端已设置 Offer 应答者：已调用 setRemoteDescription(offer)
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* have-local-answer 本地已设置 Answer 应答者：已调用 createAnswer() + setLocalDescription(answer)
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* have-remote-answer 远端已设置 Answer 发起者：已调用 setRemoteDescription(answer)
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* stable 协商完成，稳定状态
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* closed PeerConnection 已关闭
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*/
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const state = this.peerConnection.signalingState;
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console.warn(
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`[webRTC]${this.current_time.toLocaleTimeString()}初始信令变更:`,
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state,
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);
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state && this.callbacks.onState(state);
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// 根据状态执行不同逻辑
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switch (state) {
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case "new":
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console.warn(
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`[webRTC]${this.current_time.toLocaleTimeString()}【状态】未开始协商,可创建 Offer`,
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);
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break;
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case "have-local-offer":
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console.warn(
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`[webRTC]${this.current_time.toLocaleTimeString()}【状态】发起者已发 Offer,等待应答者 Answer`,
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);
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// 可触发 ICE 候选者发送逻辑
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break;
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case "have-remote-offer":
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console.warn(
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`[webRTC]${this.current_time.toLocaleTimeString()}【状态】应答者已收 Offer,可创建 Answer`,
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);
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break;
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case "stable":
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console.warn(
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`[webRTC]${this.current_time.toLocaleTimeString()}【状态】Offer/Answer 协商完成,进入 ICE 配对阶段`,
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);
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break;
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case "closed":
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console.warn(
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`[webRTC]${this.current_time.toLocaleTimeString()}【状态】PeerConnection 已关闭,协商终止`,
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);
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break;
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default:
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console.warn(
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`[webRTC]${this.current_time.toLocaleTimeString()}【状态】协商中:`,
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state,
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);
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}
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};
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// ICE 候选者收集 / 配对 / 连接
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this.peerConnection.onicegatheringstatechange = () => {
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/**
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* ICE 连接状态（iceConnectionState）
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* new 初始状态，未开始连接
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* checking 正在检查候选者配对
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* connected 已建立连接（P2P 成功）
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* completed 连接完成（所有候选者检查完毕）
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* failed ICE 协商失败
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* disconnected 连接断开（临时）
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* closed PeerConnection 已关闭
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*/
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const state = this.peerConnection.iceGatheringState;
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console.warn(
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`[webRTC]${this.current_time.toLocaleTimeString()}ICE 收集状态变更:`,
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state,
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);
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state && this.callbacks.onState(state);
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switch (state) {
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case "gathering":
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console.warn(
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`[webRTC]${this.current_time.toLocaleTimeString()}【ICE】开始收集候选者(host/srflx/relay)`,
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state,
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);
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break;
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case "complete":
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console.warn(
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`[webRTC]${this.current_time.toLocaleTimeString()}【ICE】候选者收集完成`,
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state,
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);
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break;
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}
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};
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}
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peerConnectionLisioner() {
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if (!this.peerConnection) {
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return;
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}
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// 监听远端媒体流
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this.peerConnection.ontrack = (e) => {
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this.remoteStream = e.streams[0];
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// 绑定远端视频
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if (this.config.remoteVideo) {
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this.config.remoteVideo.srcObject = this.remoteStream;
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this.config.remoteVideo.play().catch(() => {});
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}
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this.callbacks.onRemoteStream(this.remoteStream);
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};
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// 监听peer连接状态
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this.peerConnection.onconnectionstatechange = () => {
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const state = this.peerConnection.connectionState;
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if (state === "connected") {
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this.callbacks.onConnectSuccess();
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} else if (state === "failed") {
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this.callbacks.onConnectFailed();
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} else if (state === "closed") {
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this.callbacks.onClose();
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}
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};
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// 监听远端创建的数据通道
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this.peerConnection.ondatachannel = (e) => {
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this.dataChannel = e.channel;
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this.dataChannelLisioner();
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};
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// 监听 ICE 候选(需通过信令服务器发给对方)
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this.peerConnection.onicecandidate = (e) => {
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e.candidate && this.callbacks.onIceCandidate(e.candidate);
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};
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// 监听 ICE 连接状态,排查失败原因
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this.peerConnection.oniceconnectionstatechange = () => {
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const state = this.peerConnection.iceConnectionState;
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console.info("ICE 连接状态:", state);
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// 捕获 ICE failed 状态,给出明确提示
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if (state === "failed") {
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console.error("ICE 协商失败！请检查 TURN 服务器配置或网络环境");
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// 可选：触发重新协商
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this.createOffer();
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}
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};
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// 新监听 ICE 候选者生成错误
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this.peerConnection.onicecandidateerror = (event) => {
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console.error(
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"ICE 候选者生成失败:",
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event.errorText,
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"错误码:",
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event.errorCode,
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);
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};
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}
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/**
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* 初始化数据通道(自定义消息传输)
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* @private
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*/
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dataChannelLisioner() {
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if (!this.dataChannel) return;
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// 数据通道打开
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this.dataChannel.onopen = () => console.info("数据通道已就绪");
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// 接收自定义消息(自动解析JSON)
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this.dataChannel.onmessage = (e) => {
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let data = e.data;
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try {
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data = JSON.parse(data);
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} catch (err) {}
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this.callbacks.onMessage(data);
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this.dataChannelSendMsg(data);
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};
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// 数据通道错误
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this.dataChannel.onerror = (error) => console.error("数据通道异常:", error);
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// 数据通道关闭
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this.dataChannel.onclose = () => console.info("数据通道关闭");
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}
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/**
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* 采集本地音视频流(一键调用)
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* @param {Object} constraints 媒体约束(默认开启音视频)
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* @returns {Promise<MediaStream>} 本地媒体流
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*/
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async captureLocalStream(constraints = { video: true, audio: true }) {
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try {
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// getUserMedia 设备硬件：摄像头(视频)、麦克风(音频)
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// getDisplayMedia 屏幕 / 窗口 / 标签页：显示器内容(视频),可选采集系统音频
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this.localStream =
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await navigator.mediaDevices.getDisplayMedia(constraints);
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// 绑定本地视频
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if (this.config.localVideo) {
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this.config.localVideo.srcObject = this.localStream;
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this.config.localVideo.muted = true; // 静音避免回声
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this.config.localVideo.play().catch(() => {});
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}
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// 将流添加到连接
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this.localStream.getTracks().forEach((track) => {
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this.peerConnection.addTrack(track, this.localStream);
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});
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return this.localStream;
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} catch (error) {
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console.error("采集本地流失败:", error);
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throw new Error(`媒体权限不足或设备不可用: ${error.message}`);
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}
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}
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/**
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* 外部传入本地媒体流(支持屏幕共享等自定义流)
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* @param {MediaStream} stream 本地媒体流
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*/
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setLocalStream(stream) {
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if (!stream) throw new Error("媒体流不能为空");
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this.localStream = stream;
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// 绑定视频(可选)
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if (this.config.localVideo) {
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this.config.localVideo.srcObject = stream;
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this.config.localVideo.muted = true;
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this.config.localVideo.play().catch(() => {});
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}
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// 添加到连接
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// stream.getTracks().forEach(track => {
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// this.peerConnection.addTrack(track, stream);
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// });
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}
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/**
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* 获取本地媒体流
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* @returns {MediaStream|null} 本地流
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*/
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getLocalStream() {
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return this.localStream;
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}
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/**
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* 获取远端媒体流
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* @returns {MediaStream|null} 远端流
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*/
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getRemoteStream() {
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return this.remoteStream;
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}
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/**
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* 发起方：创建 Offer 并开启数据通道
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* @returns {Promise<RTCSessionDescription>} Offer 对象
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*/
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async createOffer() {
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// 重置数据通道
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if (this.dataChannel) {
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this.dataChannel.close();
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this.dataChannel = null;
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}
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// 创建数据通道(发起方主动创建)
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this.dataChannel = this.peerConnection.createDataChannel(
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this.config.dataChannelLabel,
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);
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// 监听数据通道
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this.dataChannelLisioner();
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const offer = await this.peerConnection.createOffer();
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// 设置本地offer
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await this.peerConnection.setLocalDescription(offer);
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return offer;
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}
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/**
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* 接收方：处理远端 Offer 并创建 Answer
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* @param {RTCSessionDescription} offer 远端 Offer
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* @returns {Promise<RTCSessionDescription>} Answer 对象
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*/
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async handleRemoteOffer(offer) {
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await this.peerConnection.setRemoteDescription(
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new RTCSessionDescription(offer),
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);
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const answer = await this.peerConnection.createAnswer();
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await this.peerConnection.setLocalDescription(answer);
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return answer;
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}
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/**
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* 发起方：处理远端 Answer
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* @param {RTCSessionDescription} answer 远端 Answer
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*/
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async handleAnswer(answer) {
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try {
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// 检查当前信令状态,仅在非 stable 时设置
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if (this.peerConnection.signalingState !== "stable") {
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await this.peerConnection.setRemoteDescription(
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new RTCSessionDescription(answer),
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);
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console.info("远端 Answer 设置成功");
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} else {
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console.warn("PeerConnection 已处于稳定状态,无需重复设置 Answer");
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}
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} catch (error) {
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console.error("设置远端 Answer 失败:", error);
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}
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}
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/**
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* 添加远端 ICE 候选
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* @param {RTCIceCandidate} candidate ICE 候选对象
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*/
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async addIceCandidate(candidate) {
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if (!candidate) return;
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try {
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if (this.peerConnection && candidate) {
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await this.peerConnection.addIceCandidate(
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new RTCIceCandidate(candidate),
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);
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console.info("ICE 候选者添加成功", candidate);
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} else return;
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} catch (error) {
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console.info(
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"操作失败,需要先设置【远端的SDP】:步骤1：先设置远端 Offer(发起者的 SDP)步骤2：再添加 ICE 候选者(此时已有 remoteDescription)步骤3：创建并设置本地 Answer(依赖 remoteDescription)",
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);
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console.error(error);
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if (error.message.includes("Unknown ufrag")) {
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// ufrag 不匹配,说明是旧会话候选者,直接丢弃
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console.warn("ICE 候选者 ufrag 不匹配,丢弃:", candidate);
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} else {
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// 其他错误(如未设置 remoteDescription),缓存候选者
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console.info("缓存 ICE 候选者,待会话就绪后处理");
|
||||
}
|
||||
}
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||||
}
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/**
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* 发送自定义数据(支持字符串/对象)
|
||||
* @param {string|Object} data 要发送的数据
|
||||
*/
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dataChannelSendMsg(data) {
|
||||
if (!this.dataChannel || this.dataChannel.readyState !== "open") {
|
||||
throw new Error("数据通道未连接,无法发送消息");
|
||||
}
|
||||
const sendData = typeof data === "object" ? JSON.stringify(data) : data;
|
||||
this.dataChannel.send(sendData);
|
||||
}
|
||||
/**
|
||||
* 关闭连接并清理所有资源
|
||||
*/
|
||||
close() {
|
||||
// 关闭数据通道
|
||||
if (this.dataChannel) {
|
||||
this.dataChannel.close();
|
||||
this.dataChannel = null;
|
||||
}
|
||||
|
||||
// 关闭 PeerConnection
|
||||
if (this.peerConnection) {
|
||||
this.peerConnection.close();
|
||||
this.peerConnection = null;
|
||||
}
|
||||
|
||||
// 停止媒体流
|
||||
if (this.localStream) {
|
||||
this.localStream.getTracks().forEach((track) => track.stop());
|
||||
this.localStream = null;
|
||||
}
|
||||
|
||||
// 清空视频
|
||||
if (this.config.localVideo) this.config.localVideo.srcObject = null;
|
||||
if (this.config.remoteVideo) this.config.remoteVideo.srcObject = null;
|
||||
|
||||
this.callbacks.onClose();
|
||||
console.log("WebRTC 连接已完全关闭");
|
||||
}
|
||||
/**
|
||||
* 同步暂停指定毫秒数(阻塞主线程) 延迟一段时间运行 await this.delay(100);
|
||||
* @param {number} ms 暂停毫秒数
|
||||
*/
|
||||
delayAsync(ms) {
|
||||
return new Promise((resolve) => setTimeout(resolve, ms));
|
||||
}
|
||||
/**
|
||||
* 同步暂停指定毫秒数(阻塞主线程)
|
||||
* @param {number} ms 暂停毫秒数
|
||||
*/
|
||||
delaySync(ms) {
|
||||
const start = Date.now();
|
||||
// 循环等待,直到时间差达到指定毫秒数
|
||||
while (Date.now() - start < ms) {
|
||||
// 空循环,消耗时间
|
||||
}
|
||||
}
|
||||
/**
|
||||
* 注册事件回调
|
||||
* @param {Object} handlers 回调函数集合
|
||||
* 示例：rtc.on({ onMessage: (data) => console.log(data) })
|
||||
*/
|
||||
on(handlers) {
|
||||
Object.keys(handlers).forEach((key) => {
|
||||
if (this.callbacks[key] && typeof handlers[key] === "function") {
|
||||
this.callbacks[key] = handlers[key];
|
||||
}
|
||||
});
|
||||
}
|
||||
}
|
||||
|
||||
// 封装websocket
|
||||
export class webSocket_ModuleSimple {
|
||||
constructor(url, receiveMessageCallback = null) {
|
||||
this.url = url;
|
||||
this.socket = null;
|
||||
this.heartbeatInterval = 30000; // 心跳间隔 30s
|
||||
this.reconnectInterval = 10000; // 重连间隔 10s
|
||||
this.maxReconnectAttempts = 5;
|
||||
this.reconnectAttempts = 0;
|
||||
this.heartbeatTimer = null;
|
||||
this.stopWs = false;
|
||||
this.receiveMessageCallback = receiveMessageCallback; // 接收消息回调函数
|
||||
this.callbacks = {
|
||||
onMessage: (data) => {}, // 收到自定义消息
|
||||
};
|
||||
}
|
||||
connect() {
|
||||
if (this.socket && this.socket.readyState === WebSocket.OPEN) return;
|
||||
this.socket = new WebSocket(this.url);
|
||||
this.socket.onopen = () => {
|
||||
console.log("连接成功", this.url);
|
||||
this.reconnectAttempts = 0;
|
||||
this.startHeartbeat();
|
||||
};
|
||||
this.socket.onmessage = (event) => {
|
||||
// console.log('收到消息:', event.data);
|
||||
this.receiveMessage(event);
|
||||
this.startHeartbeat(); // 收到消息重置心跳
|
||||
};
|
||||
this.socket.onclose = () => {
|
||||
console.log("连接关闭", this.url);
|
||||
if (!this.stopWs) this.handleReconnect();
|
||||
};
|
||||
this.socket.onerror = () => {
|
||||
console.log("连接错误", this.url);
|
||||
this.closeHeartbeat();
|
||||
};
|
||||
}
|
||||
/**
|
||||
* 同步暂停指定毫秒数（阻塞主线程） 延迟一段时间运行 await this.delay(100);
|
||||
* @param {number} ms 暂停毫秒数
|
||||
*/
|
||||
delayAsync(ms) {
|
||||
return new Promise((resolve) => setTimeout(resolve, ms));
|
||||
}
|
||||
/**
|
||||
* 同步暂停指定毫秒数（阻塞主线程）
|
||||
* @param {number} ms 暂停毫秒数
|
||||
*/
|
||||
delaySync(ms) {
|
||||
const start = Date.now();
|
||||
// 循环等待，直到时间差达到指定毫秒数
|
||||
while (Date.now() - start < ms) {
|
||||
// 空循环，消耗时间
|
||||
}
|
||||
}
|
||||
async send(message) {
|
||||
if (this.socket?.readyState === WebSocket.OPEN) {
|
||||
await this.delayAsync(500);
|
||||
this.socket.send(JSON.stringify(message));
|
||||
} else {
|
||||
console.error("WebSocket 未连接");
|
||||
}
|
||||
}
|
||||
startHeartbeat() {
|
||||
this.closeHeartbeat();
|
||||
this.heartbeatTimer = setInterval(() => {
|
||||
if (this.socket?.readyState === WebSocket.OPEN) {
|
||||
this.socket.send(JSON.stringify({ type: "heartBeat" }));
|
||||
// console.log('发送心跳包');
|
||||
}
|
||||
}, this.heartbeatInterval);
|
||||
}
|
||||
closeHeartbeat() {
|
||||
clearInterval(this.heartbeatTimer);
|
||||
}
|
||||
handleReconnect() {
|
||||
if (this.reconnectAttempts < this.maxReconnectAttempts) {
|
||||
setTimeout(() => {
|
||||
console.log(`尝试重连 (${++this.reconnectAttempts})`);
|
||||
this.connect();
|
||||
}, this.reconnectInterval);
|
||||
} else {
|
||||
console.warn("达到最大重连次数，停止重连");
|
||||
}
|
||||
}
|
||||
close() {
|
||||
this.stopWs = true;
|
||||
this.socket?.close();
|
||||
this.closeHeartbeat();
|
||||
}
|
||||
/**
|
||||
* 接收到消息
|
||||
*/
|
||||
receiveMessage(event) {
|
||||
// 根据业务自行处理
|
||||
// console.info('[webSocket_ModuleSimple]receiveMessage:', event.data)
|
||||
this.receiveMessageCallback && this.receiveMessageCallback(event.data);
|
||||
this.callbacks.onMessage(event.data);
|
||||
}
|
||||
/**
|
||||
* 注册事件回调
|
||||
* @param {Object} handlers 回调函数集合
|
||||
* 示例：rtc.on({ onMessage: (data) => console.log(data) })
|
||||
*/
|
||||
on(handlers) {
|
||||
Object.keys(handlers).forEach((key) => {
|
||||
if (this.callbacks[key] && typeof handlers[key] === "function") {
|
||||
this.callbacks[key] = handlers[key];
|
||||
}
|
||||
});
|
||||
}
|
||||
}
|
||||
// ---------------------------------------------->
|
||||
// 验证与使用
|
||||
|
||||
// const receiveMessage = (res) => {
|
||||
// console.log('接收消息回调：', res)
|
||||
// }
|
||||
// const wsClient = new WebSocketClient('`ws://localhost:8000/ws/0/`', receiveMessage);
|
||||
// wsClient.connect();
|
||||
// 发送业务消息
|
||||
// wsClient.send({ type: 'message', data: 'Hello Server' });
|
||||
Reference in New Issue
Block a user