Use a node app from another device locally

Question

I have a server (10.0.0.12) and my laptop (10.0.0.2) on a local network.

When I run curl http://10.0.0.2:3000 on the server, it works fine. When I run curl http://10.0.0.12:3000 on my laptop, it doesn't work saying site is unavailable.

I am able to ping and ssh into the server from my laptop.

Here is my code to finish the connection:

app.set('port', (3000));

app.listen(app.get('port'), function(){
    console.log("Node app running on localhost:" + app.get('port'));
}

I've tried passing in an ip address to the listen() function, but made no difference. I tried passing in 10.0.0.12 (the ip address of the server), 127.0.0.1, and 0.0.0.0 all with the same result.

How can I host my node app on a local network and have everyone who is on the local network be able to access it through the browser?

EDIT: I'm running on CentOS 7.

EDIT2: When I run netstat -lnt, it says this:

tcp 0 0 0.0.0.0:3000 0.0.0.0:* LISTEN

score 0 · Answer 1 · answered Apr 08 '15 at 19:50

0

Have you tried to just omit the IP address? It should then be available on the IP address of the machine it is running on and the specified port.

answered Apr 08 '15 at 19:50

Holger Adam

765
12
16

Yeah, I tried omitting it, but still the same. In the API, when you omit the if, it defaults to 127.0.0.1 – Rob Avery IV Apr 08 '15 at 19:52
Any local router or firewall. – Holger Adam Apr 08 '15 at 20:11
I'm pretty sure nothing is blocking it. The only thing between my server and laptop is the router and I'm pretty sure it's not blocking. I'll check my servers firewall. – Rob Avery IV Apr 08 '15 at 20:12
Nope. My router isn't blocking anything and neither is my server. – Rob Avery IV Apr 08 '15 at 20:40
what's your network mask ? / server OS ? and check this http://stackoverflow.com/questions/9609130/quick-way-to-find-if-a-port-is-open-on-linux – MrVinz Apr 09 '15 at 04:41

score 0 · Answer 2 · answered Apr 09 '15 at 07:30

0

As suggested by HA. remove the IP.

As you can see from the documentation: https://nodejs.org/api/http.html#http_server_listen_port_hostname_backlog_callback If the hostname is omitted, the server will accept connections directed to any IPv4 address (INADDR_ANY).

P.S. Which is the OS on the server?

answered Apr 09 '15 at 07:30

B3rn475

1,057
5
14

Which firewall are you using? – B3rn475 Apr 11 '15 at 17:24

Sachacr · Answer 3 · 2015-04-09T09:07:26.933

0

Maybe you can try :

app.listen(3000, '0.0.0.0', function(){
    console.log("Node app running on 0.0.0.0:3000");
}

edited Apr 09 '15 at 09:07

answered Apr 09 '15 at 08:20

Sachacr

704
1
9
17

score 0 · Answer 4 · answered Apr 09 '15 at 11:01

0

A possible issue could be you aren't using the http module?

var http = require('http').Server(app);

http.listen(3000, function () {
    console.log('App running on port 3000');
});

A good practice would be set the port like

app.set('port', (3000));

var http = require('http').Server(app);

http.listen(app.get('port'), function () {
    console.log('App running on port ' + app.get('port'));
});

answered Apr 09 '15 at 11:01

Aaron

193
7

I tried that and it didn't work. Node run fine. It just when I try to access the app from a different source on the same network, it can gain access. – Rob Avery IV Apr 10 '15 at 17:06

Use a node app from another device locally

4 Answers4