89 lines
3.1 KiB
TypeScript
89 lines
3.1 KiB
TypeScript
import config from "config";
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import cookie from "cookie";
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import cookieParser from "cookie-parser";
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import {Express, Request} from "express";
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import {Session} from "express-session";
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import WebSocket from "ws";
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import Application from "../Application.js";
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import ApplicationComponent from "../ApplicationComponent.js";
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import {logger} from "../Logger.js";
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import WebSocketListener from "../WebSocketListener.js";
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import ExpressAppComponent from "./ExpressAppComponent.js";
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import FrontendToolsComponent from "./FrontendToolsComponent.js";
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import RedisComponent from "./RedisComponent.js";
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export default class WebSocketServerComponent extends ApplicationComponent {
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private wss?: WebSocket.Server;
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public async init(): Promise<void> {
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const app = this.getApp();
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app.require(ExpressAppComponent);
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app.require(RedisComponent);
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const globals = app.asOptional(FrontendToolsComponent)?.getGlobals();
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if (globals) {
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globals.set('websocketUrl', config.get('app.public_websocket_url'));
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}
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}
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public async start(_app: Express): Promise<void> {
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const app = this.getApp();
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const listeners: { [p: string]: WebSocketListener<Application> } = app.getWebSocketListeners();
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this.wss = new WebSocket.Server({
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server: app.as(ExpressAppComponent).getServer(),
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}, () => {
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logger.info(`Websocket server started over webserver.`);
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}).on('error', (err) => {
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logger.error(err, 'An error occurred in the websocket server.');
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}).on('connection', (socket, request) => {
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const listener = request.url ? listeners[request.url] : null;
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if (!listener) {
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socket.close(1002, `Path not found ${request.url}`);
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return;
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} else if (!request.headers.cookie) {
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listener.handle(socket, request, null).catch(err => {
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logger.error(err, 'Error in websocket listener.');
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});
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return;
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}
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logger.debug(`Websocket on ${request.url}`);
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const cookies = cookie.parse(request.headers.cookie);
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const sid = cookieParser.signedCookie(cookies['connect.sid'], config.get('session.secret'));
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if (!sid) {
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socket.close(1002);
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return;
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}
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const store = app.as(RedisComponent).getStore();
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store.get(sid, (err, session) => {
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if (err || !session) {
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logger.error(err, 'Error while initializing session in websocket.');
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socket.close(1011);
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return;
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}
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session.id = sid;
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store.createSession(<Request>request, session);
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listener.handle(socket, request, session as Session).catch(err => {
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logger.error(err, 'Error in websocket listener.');
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});
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});
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});
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}
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public async stop(): Promise<void> {
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const wss = this.wss;
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if (wss) {
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await this.close('WebSocket server', callback => wss.close(callback));
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}
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}
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}
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