111
This commit is contained in:
@@ -1,104 +1,191 @@
|
||||
/**
|
||||
* WebSocket处理器
|
||||
* 负责管理WebSocket连接和信令消息处理
|
||||
*/
|
||||
import Offer from './offer';
|
||||
import Answer from './answer';
|
||||
import Candidate from './candidate';
|
||||
|
||||
/**
|
||||
* 是否为私有模式
|
||||
*/
|
||||
let isPrivate: boolean;
|
||||
|
||||
// [{sessonId:[connectionId,...]}]
|
||||
/**
|
||||
* 客户端连接映射
|
||||
* 键: WebSocket实例
|
||||
* 值: 该WebSocket的连接ID集合
|
||||
*/
|
||||
const clients: Map<WebSocket, Set<string>> = new Map<WebSocket, Set<string>>();
|
||||
|
||||
// [{connectionId:[sessionId1, sessionId2]}]
|
||||
/**
|
||||
* 连接对映射
|
||||
* 键: connectionId
|
||||
* 值: [WebSocket实例1, WebSocket实例2]
|
||||
*/
|
||||
const connectionPair: Map<string, [WebSocket, WebSocket]> = new Map<string, [WebSocket, WebSocket]>();
|
||||
|
||||
/**
|
||||
* 获取或创建WebSocket会话的连接ID集合
|
||||
* @param session WebSocket会话实例
|
||||
* @returns 连接ID的Set集合
|
||||
*/
|
||||
function getOrCreateConnectionIds(session: WebSocket): Set<string> {
|
||||
let connectionIds = null;
|
||||
// 检查客户端是否已存在
|
||||
if (!clients.has(session)) {
|
||||
// 如果不存在,创建新的连接ID集合
|
||||
connectionIds = new Set<string>();
|
||||
// 将新的连接ID集合与客户端关联
|
||||
clients.set(session, connectionIds);
|
||||
}
|
||||
// 获取客户端的连接ID集合
|
||||
connectionIds = clients.get(session);
|
||||
// 返回连接ID集合
|
||||
return connectionIds;
|
||||
}
|
||||
|
||||
/**
|
||||
* 重置处理器状态
|
||||
* @param mode 通信模式(public或private)
|
||||
*/
|
||||
function reset(mode: string): void {
|
||||
// 设置是否为私有模式
|
||||
isPrivate = mode == "private";
|
||||
}
|
||||
|
||||
/**
|
||||
* 添加新的WebSocket连接
|
||||
* @param ws WebSocket连接实例
|
||||
*/
|
||||
function add(ws: WebSocket): void {
|
||||
// 为新连接创建空的连接ID集合
|
||||
clients.set(ws, new Set<string>());
|
||||
// 记录添加WebSocket连接的日志
|
||||
console.log(`Add WebSocket: ${ws}`);
|
||||
}
|
||||
|
||||
/**
|
||||
* 移除WebSocket连接
|
||||
* @param ws WebSocket连接实例
|
||||
*/
|
||||
function remove(ws: WebSocket): void {
|
||||
// 获取连接的所有连接ID
|
||||
const connectionIds = clients.get(ws);
|
||||
// 遍历所有连接ID
|
||||
connectionIds.forEach(connectionId => {
|
||||
// 获取连接对
|
||||
const pair = connectionPair.get(connectionId);
|
||||
if (pair) {
|
||||
// 找到另一个WebSocket实例
|
||||
const otherSessionWs = pair[0] == ws ? pair[1] : pair[0];
|
||||
if (otherSessionWs) {
|
||||
// 向另一个连接发送断开连接消息
|
||||
otherSessionWs.send(JSON.stringify({ type: "disconnect", connectionId: connectionId }));
|
||||
}
|
||||
}
|
||||
// 从连接对映射中删除
|
||||
connectionPair.delete(connectionId);
|
||||
// 记录删除连接ID的日志
|
||||
console.log(`Remove connectionId: ${connectionId}`);
|
||||
});
|
||||
|
||||
// 从客户端映射中删除
|
||||
clients.delete(ws);
|
||||
}
|
||||
|
||||
/**
|
||||
* 处理连接请求
|
||||
* @param ws WebSocket连接实例
|
||||
* @param connectionId 连接ID
|
||||
*/
|
||||
function onConnect(ws: WebSocket, connectionId: string): void {
|
||||
let polite = true;
|
||||
// 处理私有模式
|
||||
if (isPrivate) {
|
||||
if (connectionPair.has(connectionId)) {
|
||||
const pair = connectionPair.get(connectionId);
|
||||
|
||||
if (pair[0] != null && pair[1] != null) {
|
||||
// 连接ID已被使用
|
||||
ws.send(JSON.stringify({ type: "error", message: `${connectionId}: This connection id is already used.` }));
|
||||
return;
|
||||
} else if (pair[0] != null) {
|
||||
// 找到配对连接
|
||||
connectionPair.set(connectionId, [pair[0], ws]);
|
||||
}
|
||||
} else {
|
||||
// 创建新的连接对
|
||||
connectionPair.set(connectionId, [ws, null]);
|
||||
polite = false;
|
||||
}
|
||||
}
|
||||
|
||||
// 获取或创建连接ID集合
|
||||
const connectionIds = getOrCreateConnectionIds(ws);
|
||||
// 添加连接ID
|
||||
connectionIds.add(connectionId);
|
||||
// 发送连接成功消息
|
||||
ws.send(JSON.stringify({ type: "connect", connectionId: connectionId, polite: polite }));
|
||||
}
|
||||
|
||||
/**
|
||||
* 处理断开连接请求
|
||||
* @param ws WebSocket连接实例
|
||||
* @param connectionId 连接ID
|
||||
*/
|
||||
function onDisconnect(ws: WebSocket, connectionId: string): void {
|
||||
// 获取连接的连接ID集合
|
||||
const connectionIds = clients.get(ws);
|
||||
// 从集合中删除连接ID
|
||||
connectionIds.delete(connectionId);
|
||||
|
||||
// 处理连接对
|
||||
if (connectionPair.has(connectionId)) {
|
||||
const pair = connectionPair.get(connectionId);
|
||||
// 找到另一个WebSocket实例
|
||||
const otherSessionWs = pair[0] == ws ? pair[1] : pair[0];
|
||||
if (otherSessionWs) {
|
||||
// 向另一个连接发送断开连接消息
|
||||
otherSessionWs.send(JSON.stringify({ type: "disconnect", connectionId: connectionId }));
|
||||
}
|
||||
}
|
||||
// 从连接对映射中删除
|
||||
connectionPair.delete(connectionId);
|
||||
// 向当前连接发送断开连接消息
|
||||
ws.send(JSON.stringify({ type: "disconnect", connectionId: connectionId }));
|
||||
}
|
||||
|
||||
/**
|
||||
* 处理offer信令
|
||||
* @param ws WebSocket连接实例
|
||||
* @param message 消息数据
|
||||
*/
|
||||
function onOffer(ws: WebSocket, message: any): void {
|
||||
// 获取连接ID
|
||||
const connectionId = message.connectionId as string;
|
||||
// 创建新的offer
|
||||
const newOffer = new Offer(message.sdp, Date.now(), false);
|
||||
|
||||
// 处理私有模式
|
||||
if (isPrivate) {
|
||||
if (connectionPair.has(connectionId)) {
|
||||
const pair = connectionPair.get(connectionId);
|
||||
// 找到另一个WebSocket实例
|
||||
const otherSessionWs = pair[0] == ws ? pair[1] : pair[0];
|
||||
if (otherSessionWs) {
|
||||
// 设置为polite模式
|
||||
newOffer.polite = true;
|
||||
// 发送offer消息
|
||||
otherSessionWs.send(JSON.stringify({ from: connectionId, to: "", type: "offer", data: newOffer }));
|
||||
}
|
||||
}
|
||||
return;
|
||||
}
|
||||
|
||||
// 公共模式:创建新的连接对
|
||||
connectionPair.set(connectionId, [ws, null]);
|
||||
// 向所有其他客户端广播offer
|
||||
clients.forEach((_v, k) => {
|
||||
if (k == ws) {
|
||||
return;
|
||||
@@ -107,41 +194,66 @@ function onOffer(ws: WebSocket, message: any): void {
|
||||
});
|
||||
}
|
||||
|
||||
/**
|
||||
* 处理answer信令
|
||||
* @param ws WebSocket连接实例
|
||||
* @param message 消息数据
|
||||
*/
|
||||
function onAnswer(ws: WebSocket, message: any): void {
|
||||
// 获取连接ID
|
||||
const connectionId = message.connectionId as string;
|
||||
// 获取或创建连接ID集合
|
||||
const connectionIds = getOrCreateConnectionIds(ws);
|
||||
// 添加连接ID
|
||||
connectionIds.add(connectionId);
|
||||
// 创建新的answer
|
||||
const newAnswer = new Answer(message.sdp, Date.now());
|
||||
|
||||
// 检查连接对是否存在
|
||||
if (!connectionPair.has(connectionId)) {
|
||||
return;
|
||||
}
|
||||
|
||||
// 获取连接对
|
||||
const pair = connectionPair.get(connectionId);
|
||||
// 找到另一个WebSocket实例
|
||||
const otherSessionWs = pair[0] == ws ? pair[1] : pair[0];
|
||||
|
||||
// 公共模式:更新连接对
|
||||
if (!isPrivate) {
|
||||
connectionPair.set(connectionId, [otherSessionWs, ws]);
|
||||
}
|
||||
|
||||
// 发送answer消息
|
||||
otherSessionWs.send(JSON.stringify({ from: connectionId, to: "", type: "answer", data: newAnswer }));
|
||||
}
|
||||
|
||||
/**
|
||||
* 处理candidate信令
|
||||
* @param ws WebSocket连接实例
|
||||
* @param message 消息数据
|
||||
*/
|
||||
function onCandidate(ws: WebSocket, message: any): void {
|
||||
// 获取连接ID
|
||||
const connectionId = message.connectionId;
|
||||
// 创建新的candidate
|
||||
const candidate = new Candidate(message.candidate, message.sdpMLineIndex, message.sdpMid, Date.now());
|
||||
|
||||
// 处理私有模式
|
||||
if (isPrivate) {
|
||||
if (connectionPair.has(connectionId)) {
|
||||
const pair = connectionPair.get(connectionId);
|
||||
// 找到另一个WebSocket实例
|
||||
const otherSessionWs = pair[0] == ws ? pair[1] : pair[0];
|
||||
if (otherSessionWs) {
|
||||
// 发送candidate消息
|
||||
otherSessionWs.send(JSON.stringify({ from: connectionId, to: "", type: "candidate", data: candidate }));
|
||||
}
|
||||
}
|
||||
return;
|
||||
}
|
||||
|
||||
// 公共模式:向所有其他客户端广播candidate
|
||||
clients.forEach((_v, k) => {
|
||||
if (k === ws) {
|
||||
return;
|
||||
@@ -150,4 +262,102 @@ function onCandidate(ws: WebSocket, message: any): void {
|
||||
});
|
||||
}
|
||||
|
||||
export { reset, add, remove, onConnect, onDisconnect, onOffer, onAnswer, onCandidate };
|
||||
/**
|
||||
* 处理获取连接信息请求
|
||||
* @param ws WebSocket连接实例
|
||||
*/
|
||||
function onGetConnections(ws: WebSocket): void {
|
||||
// 收集所有connectionId
|
||||
const allConnectionIds = Array.from(connectionPair.keys());
|
||||
|
||||
// 收集所有WebSocket连接信息
|
||||
const allWebSockets = Array.from(clients.entries()).map(([ws, connectionIds]) => {
|
||||
return {
|
||||
connectionIds: Array.from(connectionIds),
|
||||
// 注意:这里不能直接序列化WebSocket对象,只能返回连接数量或其他信息
|
||||
connected: true
|
||||
};
|
||||
});
|
||||
|
||||
// 发送连接信息给请求的客户端
|
||||
ws.send(JSON.stringify({
|
||||
type: "connections",
|
||||
connectionIds: allConnectionIds,
|
||||
websocketCount: clients.size
|
||||
}));
|
||||
}
|
||||
|
||||
/**
|
||||
* 处理广播消息请求
|
||||
* @param ws WebSocket连接实例
|
||||
* @param message 消息数据
|
||||
*/
|
||||
/**
|
||||
* 处理广播消息请求
|
||||
* @param ws WebSocket连接实例
|
||||
* @param message 消息数据
|
||||
*/
|
||||
function onBroadcast(ws: WebSocket, message: any): void {
|
||||
const broadcastMessage = message.message;
|
||||
const targetConnectionId = message.targetConnectionId;
|
||||
|
||||
if (targetConnectionId) {
|
||||
// 向指定连接广播
|
||||
if (connectionPair.has(targetConnectionId)) {
|
||||
const pair = connectionPair.get(targetConnectionId);
|
||||
// 向连接对中的两个WebSocket实例发送消息
|
||||
if (pair[0]) {
|
||||
pair[0].send(JSON.stringify({
|
||||
type: "broadcast",
|
||||
message: broadcastMessage,
|
||||
from: "server"
|
||||
}));
|
||||
}
|
||||
if (pair[1]) {
|
||||
pair[1].send(JSON.stringify({
|
||||
type: "broadcast",
|
||||
message: broadcastMessage,
|
||||
from: "server"
|
||||
}));
|
||||
}
|
||||
}
|
||||
} else {
|
||||
// 全局广播:向所有客户端发送消息
|
||||
clients.forEach((_v, k) => {
|
||||
k.send(JSON.stringify({
|
||||
type: "broadcast",
|
||||
message: broadcastMessage,
|
||||
from: "server"
|
||||
}));
|
||||
});
|
||||
}
|
||||
}
|
||||
function AddHeartbeat(ws: WebSocket){
|
||||
// 初始化心跳检测
|
||||
(ws as any).lastActivity = Date.now();
|
||||
|
||||
// 设置心跳检测定时器,每30秒发送一次ping
|
||||
(ws as any).heartbeatTimer = setInterval(() => {
|
||||
const now = Date.now();
|
||||
// 检查上次活动时间,如果超过60秒没有活动,关闭连接
|
||||
if (now - (ws as any).lastActivity > 10000) {
|
||||
console.log('WebSocket connection timeout, closing...');
|
||||
clearInterval((ws as any).heartbeatTimer);
|
||||
//ws.close();
|
||||
} else {
|
||||
// 发送ping消息
|
||||
ws.send(JSON.stringify({ type: "ping" }));
|
||||
console.log('WebSocket connection heartbeat, lastActivity: ', (ws as any).lastActivity);
|
||||
}
|
||||
}, 3000);
|
||||
}
|
||||
function RemoveHeartbeat(ws: WebSocket){
|
||||
// 清除心跳检测定时器
|
||||
if ((ws as any).heartbeatTimer) {
|
||||
clearInterval((ws as any).heartbeatTimer);
|
||||
}
|
||||
}
|
||||
/**
|
||||
* 导出WebSocket处理器函数
|
||||
*/
|
||||
export { reset, add, remove, onConnect, onDisconnect, onOffer, onAnswer, onCandidate, onGetConnections, onBroadcast, AddHeartbeat, RemoveHeartbeat };
|
||||
|
||||
@@ -6,53 +6,109 @@ export default class WSSignaling {
|
||||
server: Server;
|
||||
wss: websocket.Server;
|
||||
|
||||
/**
|
||||
* 构造函数,初始化WebSocket信令服务器
|
||||
* @param server HTTP服务器实例
|
||||
* @param mode 通信模式(public或private)
|
||||
*/
|
||||
constructor(server: Server, mode: string) {
|
||||
// 保存服务器实例
|
||||
this.server = server;
|
||||
// 创建WebSocket服务器
|
||||
this.wss = new websocket.Server({ server });
|
||||
// 重置处理器,设置通信模式
|
||||
handler.reset(mode);
|
||||
|
||||
/**
|
||||
* 监听WebSocket连接事件
|
||||
* @param ws WebSocket连接实例
|
||||
*/
|
||||
this.wss.on('connection', (ws: WebSocket) => {
|
||||
|
||||
// 添加新的WebSocket连接到处理器
|
||||
handler.add(ws);
|
||||
|
||||
handler.AddHeartbeat(ws);
|
||||
/**
|
||||
* 监听连接关闭事件
|
||||
*/
|
||||
ws.onclose = (): void => {
|
||||
// 从处理器中移除关闭的连接
|
||||
handler.remove(ws);
|
||||
handler.RemoveHeartbeat(ws);
|
||||
};
|
||||
|
||||
/**
|
||||
* 监听消息事件
|
||||
* @param event 消息事件对象
|
||||
*/
|
||||
ws.onmessage = (event: MessageEvent): void => {
|
||||
// 消息类型说明:
|
||||
// 1. connect, disconnect 消息格式:
|
||||
// { type: "connect", connectionId: "连接ID" }
|
||||
// { type: "disconnect", connectionId: "连接ID" }
|
||||
// 2. offer, answer, candidate 消息格式:
|
||||
// {
|
||||
// type: "offer",
|
||||
// data: {
|
||||
// from: "发送方连接ID",
|
||||
// to: "接收方连接ID",
|
||||
// data: "信令数据"
|
||||
// }
|
||||
// }
|
||||
// 3. broadcast 消息格式:
|
||||
// {
|
||||
// type: "broadcast",
|
||||
// message: "广播消息内容",
|
||||
// targetConnectionId: "目标连接ID(可选)"
|
||||
// }
|
||||
|
||||
// type: connect, disconnect JSON Schema
|
||||
// connectionId: connect or disconnect connectionId
|
||||
|
||||
// type: offer, answer, candidate JSON Schema
|
||||
// from: from connection id
|
||||
// to: to connection id
|
||||
// data: any message data structure
|
||||
|
||||
// 解析消息数据
|
||||
const msg = JSON.parse(event.data);
|
||||
// 检查消息是否有效
|
||||
if (!msg || !this) {
|
||||
return;
|
||||
}
|
||||
|
||||
// 打印接收到的消息
|
||||
console.log(msg);
|
||||
|
||||
// 根据消息类型处理
|
||||
switch (msg.type) {
|
||||
case "connect":
|
||||
// 处理连接请求
|
||||
handler.onConnect(ws, msg.connectionId);
|
||||
break;
|
||||
case "disconnect":
|
||||
// 处理断开连接请求
|
||||
handler.onDisconnect(ws, msg.connectionId);
|
||||
break;
|
||||
case "offer":
|
||||
// 处理offer信令
|
||||
handler.onOffer(ws, msg.data);
|
||||
break;
|
||||
case "answer":
|
||||
// 处理answer信令
|
||||
handler.onAnswer(ws, msg.data);
|
||||
break;
|
||||
case "candidate":
|
||||
// 处理candidate信令
|
||||
handler.onCandidate(ws, msg.data);
|
||||
break;
|
||||
case "ping":
|
||||
// 处理心跳请求,回复pong
|
||||
ws.send(JSON.stringify({ type: "pong" }));
|
||||
break;
|
||||
case "pong":
|
||||
// 处理心跳响应,更新最后活动时间
|
||||
(ws as any).lastActivity = Date.now();
|
||||
break;
|
||||
case "broadcast":
|
||||
handler.onBroadcast(ws, msg.data);
|
||||
break;
|
||||
case "onGetConnections":
|
||||
handler.onGetConnections(ws);
|
||||
break;
|
||||
default:
|
||||
// 忽略未知消息类型
|
||||
break;
|
||||
}
|
||||
};
|
||||
|
||||
Reference in New Issue
Block a user