How do I get socket.io running for a subdirectory - socket.io

Question

I've got a proxy running that only hits my node.js server for paths that being with /mysubdir
How do I get socket.io configured for this situation?
In my client code I tried:
var socket = io.connect('http://www.example.com/mysubdir');
but then I notice that the underlying socket.io (or engine.io) http requests are hitting
http://www.example.com/socket.io/?EIO=3&transport=polling&t=1410972713498-72`
I want them to hit
http://www.example.com/mysubdir/socket.io.....
Is there something I have to configure on the client and the server?

Answer 1

In my server I had to
var io = require('socket.io')(httpServer, {path: '/mysubdir/socket.io'})`
In my client I had to
<script src="http://www.example.com/mysubdir/socket.io/socket.io.js"></script>
and also
var socket = io.connect('http://www.example.com', {path: "/mysubdir/socket.io"});`

Answer 2

In my case I am using nginx as a reverse proxy. I was getting 404 errors when polling. This was the solution for me.
The url to the node server is https://example.com/subdir/
In the app.js I instantiated the io server with
var io = require('socket.io')(http, {path: '/subdir/socket.io'});
In the html I used
socket = io.connect('https://example.com/subdir/', {
path: "/subdir"
});
Cheers,
Luke.

Answer 3

Using nginx, this a solution without the need to change anything in the socket.io server app:
In the nginx conf:
location /mysubdir {
rewrite ^/mysubdir/(.*) /socket.io/$1 break;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "upgrade";
proxy_http_version 1.1;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header Host $host;
proxy_pass http://127.0.1.1:3000;
}
In the server:
var io = require('socket.io')(3000)
In the client:
var socket = io.connect('https://example.com/', {
path: "/mysubdir"
})

Answer 4

The answer by #Drew-LeSueur is correct for socket.io >= 1.0.
As I was using socket.io 0.9, I found the old way of doing it in the doc.
// in 0.9
var socket = io.connect('localhost:3000', {
'resource': 'path/to/socket.io';
});
// in 1.0
var socket = io.connect('localhost:3000', {
'path': '/path/to/socket.io';
});
Notice that a / appears as first character in the new path option.