Can't get nodejs socket.io work on my ubuntu virtual machine

Question

I'm trying to get my nodejs socket.io app work in my site with no results. On my own computer it works fine with xampp.

npm install --save express@4.10.2 and npm install --save socket.io are installed

Here's my code: server.js that I run with nodejs

var socket = require( 'socket.io' );
var express = require( 'express' );
var http = require( 'http' );

var app = express();
var server = http.createServer( app );

var port = 8080;

var io = socket.listen( server );

io.sockets.on( 'connection', function( client ) {
    console.log("New user connected");

    client.on('message', function( data ) {
        console.log( 'Message: ' + data);

        io.sockets.emit( 'message', data);
    });
});

server.listen(port, function(){
    console.log("Listening on port: " + port);
});

Here's my index.php

<script src="script/node_modules/socket.io-client/dist/socket.io.js"></script>
<script>
    var socket = io.connect( 'http://localhost:8080' );
</script>

I'm doing this differently than this because I'm using apache.

I'm getting this error no matter is the server.js running with nodejs or not I always get this same error.

Virtual machine is from digitalocean.

All ports was blocked but 22, 80 and 443.

I allowed port 8080 with sudo ufw allow 8080 and sudo ufw allow out 8080 but it didn't work.

ufw was disabled sudo ufw disable but didn't work.

I have no idea what to try next. How do I fix this?

score 1 · Answer 1 · answered Dec 23 '16 at 18:03

1

try with this. I think is a node server miss configuration. Do you check your node log?

var app = require('express')();
var http = require('http').Server(app);
var io = require('socket.io')(http);
var config = {port : 8080};

http.listen(config.port, function() {
  console.log('listening on port',config.port)
});

io.on('connection', function(socket) {
    console.log("New user connected");
    socket.on('message', function( data ) {
        console.log( 'Message: ' + data);
        socket.emit( 'message', data);
    });
});

answered Dec 23 '16 at 18:03

nerdcoder

399
2
8

What log file? And that didn't work. If you look my image you see that its `http://localhost/socket.io` and I dont fave directory like that – Tonza Dec 23 '16 at 20:14
Thank you but i already got it workin. It was my connection I was connecting to `http:/localhost:8080` so I changed it to my public ip – Tonza Dec 23 '16 at 20:32

score 0 · Answer 2 · edited May 23 '17 at 10:30

For the client side try this :

<script src="https://cdn.socket.io/socket.io-1.2.0.js"></script>
<script type="text/javascript">
  var socket = io.connect( 'http://localhost:8080' );
</script>

For the server side try this :

app.set('port', 8080);
var server = http.createServer( app );
var io = require('socket.io').listen(server);

Or look at this: possible duplicate Node js Digitalocean Socket io connection refused

location ~* \.io {
    proxy_pass http://localhost:8080;
    proxy_http_version 1.1;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection 'upgrade';
    proxy_set_header Host $host;
    proxy_cache_bypass $http_upgrade;        
}
And don't forget the upstream for your node js app

upstream app_yourdomain {
    server 127.0.0.1:3000;
    keepalive 8;
}

Can't get nodejs socket.io work on my ubuntu virtual machine

2 Answers2