Update WebSocket server with favicon assets and additional dependencies

* Added favicon assets including various sizes and a manifest file for improved branding
* Updated package.json to include new type definitions and dependencies for body-parser, cors, lru-cache, moment, multer, on-headers, response-time, and serve-favicon
* Enhanced HttpServer class to utilize the favicon and improved
  middleware configuration for handling requests

Web/WebSocket/websocket/server/assets/favicon/about.txt

@@ -0,0 +1,6 @@
+This favicon was generated using the following graphics from Twitter Twemoji:
+
+- Graphics Title: 1f916.svg
+- Graphics Author: Copyright 2020 Twitter, Inc and other contributors (https://github.com/twitter/twemoji)
+- Graphics Source: https://github.com/twitter/twemoji/blob/master/assets/svg/1f916.svg
+- Graphics License: CC-BY 4.0 (https://creativecommons.org/licenses/by/4.0/)

Web/WebSocket/websocket/server/assets/favicon/site.webmanifest

@@ -0,0 +1 @@
+{"name":"","short_name":"","icons":[{"src":"/android-chrome-192x192.png","sizes":"192x192","type":"image/png"},{"src":"/android-chrome-512x512.png","sizes":"512x512","type":"image/png"}],"theme_color":"#ffffff","background_color":"#ffffff","display":"standalone"}

Web/WebSocket/websocket/server/package.json

@@ -20,8 +20,15 @@
     "@eslint/js": "9.36.0",
     "@eslint/json": "0.13.2",
     "@eslint/markdown": "7.3.0",
+    "@types/body-parser": "1.19.6",
+    "@types/cors": "2.8.19",
+    "@types/lru-cache": "7.10.9",
     "@types/morgan": "1.9.10",
+    "@types/multer": "2.0.0",
     "@types/node": "24.5.2",
+    "@types/on-headers": "1.0.4",
+    "@types/response-time": "2.3.9",
+    "@types/serve-favicon": "2.5.7",
     "eslint": "9.36.0",
     "globals": "16.4.0",
     "jiti": "2.6.0",
@@ -34,6 +41,14 @@
   "dependencies": {
     "@techniker-me/logger": "0.0.15",
     "@techniker-me/tools": "2025.0.16",
-    "morgan": "1.10.1"
+    "body-parser": "2.2.0",
+    "cors": "2.8.5",
+    "lru-cache": "11.2.2",
+    "moment": "2.30.1",
+    "morgan": "1.10.1",
+    "multer": "2.0.2",
+    "on-headers": "1.1.0",
+    "response-time": "2.3.4",
+    "serve-favicon": "2.5.1"
   }
 }

Web/WebSocket/websocket/server/src/index.ts

@@ -1,18 +1,28 @@
-import HttpServer from './net/http/HttpServer';
-import {LoggerFactory} from '@techniker-me/logger';
 
+import {LoggerFactory} from '@techniker-me/logger';
+import HttpServer from './net/http/HttpServer';
+import path from 'node:path';
 const logger = LoggerFactory.getLogger('Server');
 
-const httpServer = new HttpServer('http', 3000, {
+const httpServer = new HttpServer(
-  getGETRoutes: () => ({}),
+  'http',
-  getPOSTRoutes: () => ({}),
+  3000,
-  getPUTRoutes: () => ({}),
+  {
-  getPATCHRoutes: () => ({}),
+    getGETRoutes: () => ({}),
-  getDELETERoutes: () => ({}),
+    getPOSTRoutes: () => ({}),
-}, {}, '', [], '', {});
+    getPUTRoutes: () => ({}),
+    getPATCHRoutes: () => ({}),
+    getDELETERoutes: () => ({})
+  },
+  {},
+  '',
+  [],
+  path.resolve(process.cwd(), 'assets', 'favicon', 'favicon.ico'),
+  {}
+);
 
 httpServer.on('error', () => {
-    logger.error('[HttpServer] Error');
+  logger.error('[HttpServer] Error');
 });
 
-httpServer.start();
+httpServer.start();

Web/WebSocket/websocket/server/src/lang/Assert.ts

@@ -73,27 +73,40 @@ export default class Assert {
     }
   }
 
-  public static isFunction(name: string, value: unknown): asserts value is Function {
+  public static isFunction(name: string, value: unknown): asserts value is (...args: unknown[]) => unknown {
     if (typeof value !== 'function') {
       throw new Error(`[${name}] must be a function, instead received [${typeof value}]`);
     }
   }
+
   public static satisfiesInterface<T>(name: string, obj: unknown, requiredProps: (keyof T)[]): asserts obj is T {
     Assert.isObject(name, obj);
-  
+
     for (const prop of requiredProps) {
-      if (!(prop in (obj as any))) {
+      if (!(prop in (obj as Record<string, unknown>))) {
         throw new Error(`[${name}] missing required property: ${String(prop)}`);
       }
     }
   }
 
-  public static isArray<T>(name: string, value: unknown): asserts value is T[] {
+  public static isArray(name: string, value: unknown): asserts value is unknown[] {
     if (!Array.isArray(value)) {
       throw new Error(`[${name}] must be an array, instead received [${typeof value}]`);
     }
   }
 
+  public static isArrayOf<T>(name: string, arrayValueType: T, value: unknown): asserts value is T[] {
+    Assert.isArray(name, value);
+
+    for (const item of value) {
+      const itemTypeof = typeof item;
+
+      if (itemTypeof !== arrayValueType) {
+        throw new Error(`[${name}] must be an array of [${arrayValueType}] received [${itemTypeof}]`);
+      }
+    }
+  }
+
   public static isStringArray(name: string, value: unknown): asserts value is string[] {
     if (!Array.isArray(value)) {
       throw new Error(`[${name}] must be an array, instead received [${typeof value}]`);
@@ -116,6 +129,7 @@ export default class Assert {
     }
   }
 
+  // eslint-disable-next-line
   public static isInstance<T>(name: string, parentClass: new (...args: any[]) => T, object: unknown): asserts object is T {
     if (object === null || object === undefined || typeof object !== 'object') {
       throw new Error(`[${name}] must be an instance of [${parentClass.constructor.name}], instead received [${typeof object}]`);

Web/WebSocket/websocket/server/src/net/http/HttpServer.ts

@@ -1,5 +1,6 @@
-import { Nullable } from '../../types/optional';
+import {Nullable} from '../../types/optional';
 import Assert from '../../lang/Assert';
+import moment from 'moment';
 import type {Server} from 'node:http';
 import http from 'node:http';
 import {EventEmitter} from 'node:events';
@@ -9,30 +10,62 @@ import IRoutes from './IRoutes';
 import {Subject} from '@techniker-me/tools';
 import express from 'express';
 import morgan from 'morgan';
+import favicon from 'serve-favicon';
+import bodyParser from 'body-parser';
+import multer from 'multer';
+import {Kilobytes} from '../../types/Units';
+import responseTime from 'response-time';
+import onHeaders from 'on-headers';
+import {LRUCache} from 'lru-cache';
+
+const requestSizeLimit: Kilobytes = 10240;
+const defaultTcpSocketTimeout = moment.duration(720, 'seconds'); // Google HTTPS load balancer expects at least 600 seconds
+const defaultKeepAliveTimeout = moment.duration(660, 'seconds'); // Google HTTPS load balancer expects at least 600 seconds
+// See https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Access-Control-Max-Age#:~:text=The%20Access%2DControl%2DMax%2D,Headers%20headers)%20can%20be%20cached.
+const corsAccessControlMaxAge = moment.duration(24, 'hours');
+const shortTermCaching = 'public, max-age=20, s-maxage=20';
+const tlsSessionTimeout = moment.duration(5, 'minutes');
+const maxCachedTlsSessions = 1000;
 
 export default class HttpServer {
-  private readonly _logger: ILogger = LoggerFactory.getLogger('HttpServer');  
+  private readonly _logger: ILogger = LoggerFactory.getLogger('HttpServer');
+  private readonly _eventEmitter: EventEmitter;
   private readonly _protocol: 'http' | 'https';
   private readonly _port: number;
+  // @ts-expect-error - unused parameter for future functionality
   private readonly _routes: IRoutes;
+  // @ts-expect-error - unused parameter for future functionality
   private readonly _viewsPath: object;
+  // @ts-expect-error - unused parameter for future functionality
   private readonly _viewParameters: string;
   private readonly _resourcesPaths: string[];
   private readonly _favicon: string;
   private readonly _cors: object;
   private readonly _app: Subject<Nullable<express.Application>>;
-  private readonly _eventEmitter: EventEmitter;
   private readonly _server: Subject<Nullable<Server>>;
+  private readonly _tlsSessionCache = new LRUCache({
+    ttl: tlsSessionTimeout.asMilliseconds(),
+    max: maxCachedTlsSessions
+  });
 
-  constructor(protocol: 'https' | 'http', port: number, routes: IRoutes, viewsPath: object, viewParameters: string, resourcesPaths: string[], favicon: string, cors: object) {
+  constructor(
+    protocol: 'https' | 'http',
+    port: number,
+    routes: IRoutes,
+    viewsPath: object,
+    viewParameters: string,
+    resourcesPaths: string[],
+    favicon: string,
+    cors: object
+  ) {
     Assert.isString('protocol', protocol);
     Assert.isNumber('port', port);
-    Assert.satisfiesInterface ('routes', routes, ['getGETRoutes', 'getPOSTRoutes', 'getPUTRoutes', 'getPATCHRoutes', 'getDELETERoutes']);
+    Assert.satisfiesInterface('routes', routes, ['getGETRoutes', 'getPOSTRoutes', 'getPUTRoutes', 'getPATCHRoutes', 'getDELETERoutes']);
-    Assert.isObject('viewsPath', viewsPath);
+    // Assert.isObjectOf<string>('viewsPath', viewsPath);
     Assert.isString('viewParameters', viewParameters);
-    Assert.isStringArray('resourcesPaths', resourcesPaths);
+    Assert.isArrayOf<string>('resourcesPaths', 'string', resourcesPaths);
     Assert.isString('favicon', favicon);
-    Assert.isObject('cors', cors);
+    // Assert.isObjectOf<string>('cors', cors, 'string');
 
     this._protocol = protocol;
     this._port = port;
@@ -47,22 +80,281 @@ export default class HttpServer {
     this._server = new Subject<Nullable<Server>>(null);
   }
 
-  public async start() {
+  public start() {
-    const app = this._app.value = express();
+    return new Promise((resolve, reject) => {
-    
+      const app = (this._app.value = express());
-    app.use(morgan('common'));
-    this._server.value = http.createServer(app);
 
-    this._server.value.listen(this._port, () => {
+      this.configureListener();
-      this._logger.info(`Server is running on port ${this._port}`);
+      this.configureMiddleware();
+      this.configureResources();
+      this.configureRoutes();
+
+      app.set('x-powered-by', false);
+
+      const server = (this._server.value = http.createServer(app));
+
+      const onListen = () => {
+        this._logger.info('HTTP Server listening on %s://*:%s', this._protocol, this._port);
+
+        server.removeListener('error', onError);
+
+        resolve(this);
+      };
+
+      const onError = (err: unknown) => {
+        server.removeListener('listening', onListen);
+
+        reject(err);
+      };
+
+      server.keepAliveTimeout = defaultKeepAliveTimeout.milliseconds();
+      server.timeout = defaultTcpSocketTimeout.asMilliseconds();
+      server.setTimeout(defaultTcpSocketTimeout.asMilliseconds());
+      server.once('error', onError);
+      server.once('listening', onListen);
+
+      server.on('newSession', (sessionId, sessionData, callback) => {
+        const cacheId = sessionId.toString('hex');
+
+        this._tlsSessionCache.set(cacheId, sessionData);
+        this._logger.debug('Created new TLS session [%s]', cacheId);
+
+        callback();
+      });
+
+      server.on('resumeSession', (sessionId, callback) => {
+        const cacheId = sessionId.toString('hex');
+        const sessionData = this._tlsSessionCache.get(cacheId);
+
+        callback(null, sessionData);
+
+        if (sessionData) {
+          this._logger.debug('Resumed TLS session [%s]', cacheId);
+        } else {
+          this._logger.debug('TLS session [%s] not found', cacheId);
+        }
+      });
+
+      server.listen({
+        port: this._port,
+        backlog: 16 * 1024
+      });
     });
   }
 
-
   public on(event: string, handler: () => void): void {
     Assert.isNonEmptyString('event', event);
     Assert.isFunction('handler', handler);
 
     this._eventEmitter.on(event, handler);
   }
+
+  private configureListener() {
+    if (!this._app.value) {
+      throw new Error('Unable to configure listener, no app instance found');
+    }
+
+    const app = this._app.value;
+
+    app.use((req, res, next) => {
+      req.on('finish', () => {
+        this._eventEmitter.emit('request', req.method, req.url, res.statusCode, req.headers);
+      });
+
+      next();
+    });
+  }
+
+  private configureMiddleware() {
+    if (!this._app.value) {
+      throw new Error('Unable to configure middleware, no app instance found');
+    }
+
+    const app = this._app.value;
+    const logger = this._logger;
+
+    app.use(morgan('common'));
+    app.enable('trust proxy');
+    app.set('env', 'development'); // setting env to test prevents logging to the console
+    app.use(favicon(this._favicon));
+    app.use(
+      morgan(
+        ':remote-addr - :remote-user [:date[clf]] ":method :url HTTP/:http-version" :status :res[content-length] ":referrer" ":user-agent" :response-time',
+        {
+          stream: {
+            write(line) {
+              logger.info(line.trim());
+            }
+          }
+        }
+      )
+    );
+
+    app.use(
+      bodyParser.text({
+        type: 'application/sdp',
+        limit: requestSizeLimit
+      })
+    );
+    app.use(
+      bodyParser.text({
+        type: 'application/trickle-ice-sdpfrag',
+        limit: requestSizeLimit
+      })
+    );
+    app.use(
+      bodyParser.urlencoded({
+        extended: true,
+        limit: requestSizeLimit
+      })
+    );
+    app.use(
+      multer({
+        limits: {
+          fields: 1,
+          fieldNameSize: 100,
+          fieldSize: requestSizeLimit,
+          files: 0,
+          parts: 1,
+          headerPairs: 1
+        }
+      }).none()
+    );
+    app.use((req, _res, next) => {
+      const contentType = req?.headers?.['content-type'] || '';
+
+      if (contentType.startsWith('multipart/form-data;')) {
+        if (req?.body?.jsonBody) {
+          req.body = JSON.parse(req.body.jsonBody);
+        }
+      }
+
+      next();
+    });
+    app.use(responseTime());
+    app.use((req, res, next) => {
+      res.set('x-origination', 'Platform');
+
+      if (req.secure) {
+        res.setHeader('Strict-Transport-Security', 'max-age=31536000; includeSubDomains; preload');
+      }
+
+      next();
+    });
+
+    if (this._cors) {
+      this._logger.info('Enable CORS on %s://*:%s', this._protocol, this._port);
+
+      const cachedCorsAllowOrigins: Record<string, string> = {};
+      const getCorsAllowOrigin = (url: string) => {
+        let corsAllowOrigin = cachedCorsAllowOrigins[url];
+
+        if (!Object.hasOwn(cachedCorsAllowOrigins, url)) {
+          Object.entries(this._cors).forEach(([key, value]) => {
+            if (url.startsWith(key)) {
+              corsAllowOrigin = value;
+            }
+          });
+
+          cachedCorsAllowOrigins[url] = corsAllowOrigin ?? '';
+        }
+
+        return corsAllowOrigin;
+      };
+
+      app.use((req, res, next) => {
+        const corsAllowOrigin = getCorsAllowOrigin(req.url);
+
+        if (corsAllowOrigin) {
+          res.header('Access-Control-Allow-Origin', corsAllowOrigin);
+          res.header(
+            'Access-Control-Allow-Headers',
+            'Authorization, Origin, Range, X-Requested-With, If-Modified-Since, Accept, Keep-Alive, Cache-Control, Content-Type, DNT'
+          );
+          res.header('Access-Control-Allow-Methods', 'POST, GET, HEAD, OPTIONS, PUT, PATCH, DELETE');
+          res.header('Access-Control-Expose-Headers', 'Server, Range, Date, Content-Disposition, X-Timer, ETag, Link, Location');
+          res.header('Access-Control-Max-Age', corsAccessControlMaxAge.asSeconds().toString());
+
+          if (req.method === 'OPTIONS') {
+            res.header('Cache-Control', shortTermCaching);
+          }
+        }
+
+        next();
+      });
+    }
+    app.use((_req, res, next) => {
+      const startTimeSeconds = Date.now() / 1000;
+      const startTimeNanoseconds = process.hrtime.bigint();
+
+      onHeaders(res, () => {
+        const durationNanoseconds = process.hrtime.bigint() - startTimeNanoseconds;
+        const durationMilliseconds = durationNanoseconds / 1000000n;
+
+        // https://developer.fastly.com/reference/http/http-headers/X-Timer/
+        // S{unixStartTimeSeconds},VS0,VE{durationMilliseconds}
+        res.setHeader('X-Timer', `S${startTimeSeconds},VS0,VE${durationMilliseconds}`);
+      });
+
+      next();
+    });
+  }
+
+  private configureResources() {
+    if (!this._app.value) {
+      throw new Error('Unable to configure resources, no app instance found');
+    }
+
+    const app = this._app.value;
+
+    for (const resourcePath of this._resourcesPaths) {
+      app.use(express.static(resourcePath));
+    }
+
+    app.use(this.errorHandler);
+    app.use(this.genericNotFoundHandler);
+  }
+
+  // eslint-disable-next-line @typescript-eslint/no-unused-vars
+  private errorHandler(err: Error, _req: express.Request, res: express.Response, _next: express.NextFunction) {
+    this._logger.error(err.message);
+
+    res.status(500).send({status: 'error'});
+
+    return;
+  }
+
+  private genericNotFoundHandler(_req: express.Request, res: express.Response) {
+    res.status(404).send({status: 'not-found'});
+
+    return;
+  }
+
+  private configureRoutes() {
+    if (!this._app.value) {
+      throw new Error('Unable to configure routes, no app instance found');
+    }
+
+    // TODO: Implement routes
+    // const app = this._app.value;
+
+    // let catchAllHandler = null;
+
+    // for (const route of this._routes.getGETRoutes().entries()) {
+    //   const [handler, name] = route;
+
+    //   if (name === '*') {
+    //     if (catchAllHandler) {
+    //       throw new Error(`Only one catch-all handler can ber registered per server, ignoring conflicting catch-all`);
+    //     }
+
+    //     catchAllHandler = handler;
+
+    //     continue;
+    //   }
+
+    //   this._logger.debug(`Registering [GET] route [${name}]`);
+    //   // app.get(name, this._json);
+    // }
+  }
 }

Web/WebSocket/websocket/server/src/net/http/IRoutes.ts

@@ -1,8 +1,7 @@
-
 export default interface IRoutes {
-  getGETRoutes(): Record<string, () => (Promise<void> | void);
+  getGETRoutes(): Record<string, () => void | Promise<void>>;
-  getPOSTRoutes(): Record<string, () => (Promise<void> | void);
+  getPOSTRoutes(): Record<string, () => void | Promise<void>>;
-  getPUTRoutes(): Record<string, () => (Promise<void> | void);
+  getPUTRoutes(): Record<string, () => void | Promise<void>>;
-  getPATCHRoutes(): Record<string, () => (Promise<void> | void);
+  getPATCHRoutes(): Record<string, () => void | Promise<void>>;
-  getDELETERoutes(): Record<string, () => (Promise<void> | void);
+  getDELETERoutes(): Record<string, () => void | Promise<void>>;
 }

Web/WebSocket/websocket/server/src/types/Units.ts

@@ -0,0 +1,18 @@
+export type Bytes = number;
+export type Kilobytes = number;
+export type Megabytes = number;
+export type Gigabytes = number;
+export type Terabytes = number;
+export type Petabytes = number;
+export type Exabytes = number;
+export type Zettabytes = number;
+export type Yottabytes = number;
+
+export type Milliseconds = number;
+export type Seconds = number;
+export type Minutes = number;
+export type Hours = number;
+export type Days = number;
+export type Weeks = number;
+export type Months = number;
+export type Years = number;

Web/WebSocket/websocket/server/src/types/optional.ts

@@ -1,2 +1,2 @@
 export type Optional<T> = T | undefined | null;
-export type Nullable<T> = T | null;
+export type Nullable<T> = T | null;