Socket.io authorization, "No Authorization header was found" - socket.io

Question

Trying to add authorization to my real-time app, I get this message in chrome console:
socket.io-parser decoded 4{"message":"No Authorization header was found","code":"credentials_required", "type":"UnauthorizedError"}
Here is my code (I use angular-fullstack):
socket.service.js (client side)
'use strict';
angular.module('smthing')
.factory('socket', function(socketFactory, Auth) {
var ioSocket = io(null, {
//Auth.getToken() returns $cookieStore.get('token') from angular auth.service.js
'query': 'token=' + Auth.getToken()
});
...
socketio.js (server side)
socketio.use(require('socketio-jwt').authorize({
secret: 'smthing',
handshake: true
}));
socketio.on('connection', function (socket) {
console.log('smthing');
...
"smthing" never prints. If I remove the authorization part, everything works correctly. I thought it was pretty straight forward... Any help would be great !

Answer 1

I was able to resolve this in my own environment. I use this snippet, though I had issues until resolving the root issue.
io.set('authorization', socketioJwt.authorize({
secret: jwtSecret,
handshake: true
}));
The root issue was that the token required for socketio-jwt was not being added to the request query. If you inspect socketio-jwt/lib/index.js, you'll see some code like:
//get the token from query string
if (req._query && req._query.token) {
token = req._query.token;
}
else if (req.query && req.query.token) {
token = req.query.token;
}
This means that you should be able to log the value for query and _query here, and see your token.
If you cannot, you must be sure on in your socket.io client that you are setting the token to the query. The typical way for this is to add it to the connectParams.
In the iOS/Swift client, this looks like this:
self.socket = [[SocketIOClient alloc] initWithSocketURL:#"localhost:8091"
options:#{
#"connectParams" : #{#"token" : <my_token>}
}];

Answer 2

Actually the right syntax:
var ioSocket = io(null, {
query: {
token: Auth.getToken()
}
});