Connecting Socket.io to our server

SocketManager.ts

import { Server, Socket } from "socket.io";

Class SocketManager {
  io: SocketIO.Server;
  pubClient: redis.RedisClient;
  sessionStore: RedisSessionStore;
  serverConfig: IServerConfig;
  redisEnabled: boolean;
  dynamoEnabled: boolean;

  constructor(server: http.Server) {
    this.serverConfig = config;
    this.generateSocketServer(server);
  }
    
  generateSocketServer = (server: http.Server) => {
      this.io = new Server(server, {
        cors: {
          origin: "http://localhost:3000",
          methods: ["GET", "POST"],
          credentials: true
        },
        allowEIO3: true, // Whether to enable compatibility with Socket.IO v2 clients.
        maxHttpBufferSize: 1024, // max message payload size (prevents clients from sending gigabytes of data)
        pingInterval: 45 * 1000, // 45 seconds (less than ALB timeout)
        pingTimeout: 4 * 60 * 1000 // 4 minutes
      });
    };
};