forked from FoundKeyGang/FoundKey
82 lines
2.3 KiB
TypeScript
82 lines
2.3 KiB
TypeScript
import { EventEmitter } from 'events';
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import * as http from 'node:http';
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import { WebSocketServer } from 'ws';
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import { SECOND, MINUTE } from '@/const.js';
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import { subscriber as redisClient } from '@/db/redis.js';
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import { Users } from '@/models/index.js';
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import { Connection } from './stream/index.js';
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import authenticate from './authenticate.js';
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export const initializeStreamingServer = (server: http.Server): void => {
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// Init websocket server
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const ws = new WebSocketServer({ noServer: true });
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server.on('upgrade', async (request, socket, head)=> {
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if (!request.url.startsWith('/streaming?')) {
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socket.write('HTTP/1.1 400 Bad Request\r\n\r\n', undefined, () => socket.destroy());
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return;
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}
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const q = new URLSearchParams(request.url.slice(11));
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const [user, app] = await authenticate(request.headers.authorization, q.get('i'))
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.catch(err => {
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socket.write('HTTP/1.1 401 Unauthorized\r\n\r\n', undefined, () => socket.destroy());
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return [];
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});
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if (typeof user === 'undefined') return;
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if (user?.isSuspended) {
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socket.write('HTTP/1.1 403 Forbidden\r\n\r\n', undefined, () => socket.destroy());
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return;
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}
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ws.handleUpgrade(request, socket, head, (socket) => {
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const ev = new EventEmitter();
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async function onRedisMessage(_: string, data: string) {
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const parsed = JSON.parse(data);
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ev.emit(parsed.channel, parsed.message);
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}
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redisClient.on('message', onRedisMessage);
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const main = new Connection(socket, ev, user, app);
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// ping/pong mechanism
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let pingTimeout = null;
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function startHeartbeat() {
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if (pingTimeout) clearTimeout(pingTimeout);
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socket.ping();
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pingTimeout = setTimeout(() => {
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socket.terminate();
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}, 30 * SECOND);
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}
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startHeartbeat();
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socket.on('ping', () => { startHeartbeat(); });
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socket.on('pong', () => { startHeartbeat(); });
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// keep user "online" while a stream is connected
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const intervalId = user ? setInterval(() => {
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Users.update(user.id, {
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lastActiveDate: new Date(),
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});
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}, 5 * MINUTE) : null;
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if (user) {
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Users.update(user.id, {
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lastActiveDate: new Date(),
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});
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}
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socket.once('close', () => {
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ev.removeAllListeners();
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main.dispose();
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redisClient.off('message', onRedisMessage);
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if (intervalId) clearInterval(intervalId);
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if (pingTimeout) clearTimeout(pingTimeout);
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});
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});
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});
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};
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