gistfile1.txt

#!/usr/bin/env node

/**
 * Module dependencies.
 */

 import http from "http";
 import debug from "debug";
 import { app, session } from "./App";
 import socketio from "socket.io";
 import socketEvents from "./SocketEvents";

 debug("mjolnir-api:server");

/**
 * Normalize a port into a number, string, or false.
 */

 function normalizePort(val) {
    const p = parseInt(val, 10);

    if (isNaN(p)) {
        // named pipe
        return val;
    }

    if (p >= 0) {
        // port number
        return p;
    }

    return false;
}

/**
 * Get port from environment and store in Express.
 */

 const port = normalizePort(process.env.PORT || "3000");
 app.set("port", port);

/**
 * Create HTTP server.
 */

 const server = http.createServer(app);

/**
 * Socket.io
 */
 const sharedsession = require("express-socket.io-session");

 const io = socketio(server);
 io.use(sharedsession(session));
 socketEvents(io);

/**
 * Event listener for HTTP server "error" event.
 */

 function onError(error) {
    if (error.syscall !== "listen") {
        throw error;
    }

    const bind = typeof port === "string"
    ? `Pipe ${port}`
    : `Port ${port}`;

    // handle specific listen errors with friendly messages
    switch (error.code) {
        case "EACCES":
        console.error(`${bind} requires elevated privileges`);
        process.exit(1);
        break;
        case "EADDRINUSE":
        console.error(`${bind} is already in use`);
        process.exit(1);
        break;
        default:
        throw error;
    }
}

/**
 * Event listener for HTTP server "listening" event.
 */

 function onListening() {
    const addr = server.address();
    const bind = typeof addr === "string"
    ? `pipe ${addr}`
    : `port ${addr.port}`;
    debug(`Listening on ${bind}`);
}

/**
 * Listen on provided port, on all network interfaces.
 */

 server.listen(port);
 server.on("error", onError);
 server.on("listening", onListening);