Develop Reference

Javascript http server: ERR_CONNECTION_REFUSED

I recently attempted to install an SSL certificate to my server. The certificate files (privkey.pem, fullchain.pem) are in the root directory of the application. When I run the following code:
var express = require('express');
var app = express();
var helmet = require('helmet');
var db = require('./server/database.js');
var fs = require('fs');
var ssl = require('ssl-root-cas');
'use strict';
var rootCas = require('ssl-root-cas/latest').create();
// default for all https requests
// (whether using https directly, request, or another module)
require('https').globalAgent.options.ca = rootCas;
app.use(helmet());
var options = {
key : fs.readFileSync('privkey.pem', 'ascii'),
cert : fs.readFileSync('fullchain.pem', 'ascii')
}
app.get('/', function(req, res) {
res.sendFile(__dirname + '/public/index.html');
});
app.use('/public', express.static(__dirname + '/public'));
var serv = require('https').createServer(options, app);
The server runs with no errors. The "Server is listening on port 80" Confirmation I added shows, and the certificate appears to not cause any direct issues. However when I attempt to connect to the domain(using https://) Chrome responds with ERR_CONNECTION_REFUSED. When connecting to the domain via http, Chrome responds with the same message. I am using SocketIO, which is initialized later in the code, I have not found any connection between my issue and SocketIO's functions. What is causing the inability to connect?

The https request is sent over port 443 rather than 80. The following code worked without issues:
var express = require('express');
var app = express();
var helmet = require('helmet');
var db = require('./server/database.js');
var fs = require('fs');
var ssl = require('ssl-root-cas');
'use strict';
var rootCas = require('ssl-root-cas/latest').create();
// default for all https requests
// (whether using https directly, request, or another module)
require('https').globalAgent.options.ca = rootCas;
app.use(helmet());
var options = {
key : fs.readFileSync('privkey.pem', 'ascii'),
cert : fs.readFileSync('fullchain.pem', 'ascii')
}
app.get('/', function(req, res) {
res.sendFile(__dirname + '/public/index.html');
});
app.use('/public', express.static(__dirname + '/public'));
var serv = require('https').createServer(options, app);
//var serv = require('https').Server(app); //DEBUG ONLY

How to use Socket.io combined with Express.JS (using Express application generator)

I'm trying to use Socket.io combined with Express.JS (using Express application generator).
I've found some aswers how to do this (Using socket.io in Express 4 and express-generator's /bin/www).My problem is that i cannot make use of the sockets inside the routes folder.
I can use them in the app.js and bin/www.js files. When i call the route index.js it just keeps loading the webpage for a long time without giving any errors.
bin/www.js
...
/**
* Create HTTP server.
*/
var server = http.createServer(app);
var io = app.io
io.attach( server );
...
app.js
...
// Express
var app = express();
// Socket.io
var io = socket_io();
app.io = io;
var routes = require('./routes/index')(io);
...
routes/index.js
module.exports = function(io) {
var app = require('express');
var router = app.Router();
io.on('connection', function(socket) {
console.log('User connected');
});
return router;
}

Here is a simple example on how to use Socket.io with Express that I made available on GitHub here:
https://github.com/rsp/node-websocket-vs-socket.io
The backend code is this:
var path = require('path');
var app = require('express')();
var http = require('http').Server(app);
var io = require('socket.io')(http);
app.get('/', (req, res) => {
console.error('express connection');
res.sendFile(path.join(__dirname, 'si.html'));
});
io.on('connection', s => {
console.error('socket.io connection');
for (var t = 0; t < 3; t++)
setTimeout(() => s.emit('message', 'message from server'), 1000*t);
});
http.listen(3002, () => console.error('listening on http://localhost:3002/'));
console.error('socket.io example');
See https://github.com/rsp/node-websocket-vs-socket.io/blob/master/si.js
As you can see here, I am creating the express app with:
var app = require('express')();
Then I create an http server with that app with:
var http = require('http').Server(app);
And finally I use that http server to create the Socket.io instance:
var io = require('socket.io')(http);
After running:
http.listen(3002, () => console.error('listening on http://localhost:3002/'));
it all works together.
You can see the entire example on GitHub with both backend and frontend code that works. It currently uses Express 4.14.0 and socket.io 1.4.8.

For anyone who still want to use socket.io and express http request. Easiest way is to create two seprate instance of http server listing to different ports. 1 for websockets and 2nd for api requests.
const express = require("express");
const app = express();
const httpServer = require("http").createServer(app);
const io = require("socket.io")(httpServer, {
path: '/'
});
// routes and io on connection
httpServer.listen(5000, () => {
console.log("Websocket started at port ", 5000)
});
app.listen(3000, () =>{
console.log("Http server listening at", 3000)
})

serving html files in node js using express

actally i'm trying to serve a html file in the browser using node js and express. unfortunatly i can't get the correct appearence of the html file.
here is the code :
var http = require('http');
var fs = require('fs');
// Chargement du fichier index.html affiché au client
var server = http.createServer(function(req, res) {
fs.readFile('./table.html', 'utf-8', function(error, content) {
res.writeHead(200, {"Content-Type": "text/html"});
res.end(content);
});
});

To send a single file for a specific route use the res.sendFile() function.
var express = require('express');
var app = express();
var path = require('path');
app.get('/', function(req, res) {
res.sendFile(path.resolve('path/to/my/file.html'));
});
app.listen(3000);
In case you want to serve all files in a directory use the express.static() middleware
var express = require('express');
var app = express();
app.use(express.static('path/to/my/directory'));
app.listen(3000);

With express u can do something like
//init the app to extend express
var express=require("express");
var app=express();
//inside the http callback
var server = http.createServer(function(req, res) {
app.use(express.static("./file"));
})
server.listen(8000);

Node.js Socket.io chat server SSL

i am trying to get my chat app in node.js/socket.io to work on SSL (https), i am now at the moment i dont get errors when i startup the server but i cant connect anymore.
I googled and tried so much examples but i cant get it to work.
This was my old code (this works in http)
var express = require('express')
, app = express()
, http = require('http')
, server = http.createServer(app)
, io = require('socket.io').listen(server);
server.listen(8080);
app.get('/', function (req, res) {
res.sendfile(__dirname + '/index.html');
});
This is my changed code:
var https = require('https');
var fs = require('fs');
var options = {
key: fs.readFileSync('cert.key'),
cert: fs.readFileSync('cert.crt')
};
var express = require('express')
, app = express();
var server = https.createServer(options);
var io = require('socket.io').listen(server);
server.listen(8080);
app.get('/', function (req, res) {
res.sendfile(__dirname + '/index.html');
});

This is how I created the https server on node. Try it once it is working fine for me .
var port = "80";
var express = require('express')
, app = express()
, http = require('http')
, server = http.createServer(app);
server.listen(port);
var fs = require('fs');
var net = require('net');
var tls = require('tls');
var sslOptions = {
key: fs.readFileSync('public/server.key'),
cert: fs.readFileSync('public/server.crt')
};
tls.createServer(sslOptions, function (cleartextStream) {
var cleartextRequest = net.connect({
port: port, //your port
host: serverStr // your server address
}, function () {
cleartextStream.pipe(cleartextRequest);
cleartextRequest.pipe(cleartextStream);
});
}).listen(443);

How to access header information on node js?

How can i read cookie on node js ??
var socket = require( 'socket.io' );
var express = require('express');
var app = express();
var server = require('http').createServer(app);
var io = socket.listen( server );
var port = process.env.PORT || 8000;
var mysql = require('mysql');
function parseCookies (request) {
var list = {},
rc = request.headers.cookie;
rc && rc.split(';').forEach(function( cookie ) {
var parts = cookie.split('=');
list[parts.shift().trim()] = decodeURI(parts.join('='));
});
return list;
}
http.createServer(function (request, response) {
// To Read a Cookie
var user_id= cookies.realtimeid;
console.log(user_id);
});
server.listen(port, function () {
console.log('Server listening at port %d', port);
var cookies = parseCookies();
console.log(cookies);
});
I am new on node and socket. I have to read cookie value that is set by codeignter.
How can i send header request on parseCookies from server.listen.

I see you are using express, so I suggest you to use the very well known module for it. cookie-parser https://www.npmjs.com/package/cookie-parser
Installation
npm install cookie-parser
HOW TO USE IT
var express = require('express')
var cookieParser = require('cookie-parser')
var app = express()
app.use(cookieParser())
So basically after your mysql require you can do app.use(cookieParser())
And then in every request you do in the req variable you will find the cookies with req.cookies
Example
var express = require('express')
var cookieParser = require('cookie-parser')
var app = express()
app.use(cookieParser())
app.get('/', function(req, res) {
console.log("Cookies: ", req.cookies)
})
app.listen(8080)