WebSocket on Heroku ERR_CONNECTION_REFUSED

Question

I am trying to run a node js app on Heroku using WebSockets. However, I am not able to resolve this error (As seen in conosle of Chrome browser)

WebSocket connection to 'wss://myappname.herokuapp.com:27225/' failed: Error in connection establishment: net::ERR_CONNECTION_REFUSED

I am using 'wss' since Heroku runs on HTTPS.

My client side code is :

$.get("https://myappname.herokuapp.com/port",function(data){
    port = data;
    console.log(data);
    host = 'wss://myappname.herokuapp.com:' + port + '/';
    ws = new WebSocket(host);
  });

My server side code is :

var WebSocketServer = require("ws").Server
var fs = require('fs');
var express = require('express'); 
var app = express();
var http = require('http');
var port = process.env.PORT || 5000;
var request = require('request');

var server = http.createServer(app);
var serverOnPort = server.listen(port);

console.log("Server listening on port ",port);

var wss = new WebSocketServer({server: serverOnPort});
console.log("websocket server created");

Any help would be appreciated.

Thank You.

user3157307 · Accepted Answer · 2016-01-21 21:12:01Z

11

So it seems like I was trying to over-do it with the port number. Just using the host as wss://myappname.herokuapp.com/ works well.

answered Jan 21, 2016 at 21:12

user3157307

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6 Comments

Dennis Smink Over a year ago

I am having the exact problem you expierenced, how did you managed to get it up? I keep getting the ERR_CONNECTION_REFUSED error. My code is nearly identical to yours..

user3157307 Over a year ago

@DennisSmink Are you using a port number at the end of the URL? When I removed that from my code, it worked as expected.

Dennis Smink Over a year ago

I removed the port, but did not seem to work. Eventually I resolved it, I was running 2 nodes instead of 1, heroku doesn't allow this.

jhnferraris Over a year ago

What do you mean by you were running 2 nodes?

arbel03 Over a year ago

That's weird, why we shouldn't mention the port number when using this library, Thank's though, you saved me a lot of time!

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user2124263 · Accepted Answer · 2018-05-19 16:26:36Z

0

I also found this problem. It seems Heroku will automatically route port number. It does's allow to specify port number in url. In my chrome, it show ERR_CONNECTION_RESET. This also happen with XMLHttpRequest. Port number still need when you test with localhost or another server which is not Heroku.

answered May 19, 2018 at 16:26

user2124263

1

1 Comment

Matus Dubrava Over a year ago

Please avoid posting answer such as 'me too' or 'I am facing the same problem' without providing a solution to that problem.

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