Multiple Express with express-session Applications on Single Server, Different Ports - session

Question

I am running multiple MEAN applications using express-session on a single server under multiple ports. When I authenticate into application A, the established token for the other (application B) is modified. The authenticated user session for application B is then denied.
How do I configure all of my applications to persist and verify tokens independently? For example, on localhost, application A runs on port 80, and application B runs on port 90. I want a user to be able to authenticate and use application A without disrupting another user's Application B session.
Here is the code in my app.js file that should be relevant to my issue:
// Connect to database
mongoose.connect(config.mongo.uri, config.mongo.options);
var connection = mongoose.createConnection(config.mongo.uri, config.mongo.options);
var app = express();
// enable CORS
app.use(cors());
// enable cookieParser
app.use(cookieParser());
// enable session
app.use(session({
secret: config.secrets.session,
resave: false,
saveUninitialized: true,
name: 'uniqueSessionId',
store: new MongoStore(
{
mongooseConnection: connection
}
)
}));

Answer 1

Cookies (which are used to store the session identifier in) are shared across all ports on a given hostname, which is why your apps are interfering with each other.
The documentation of express-session suggests the following:
if you have multiple apps running on the same hostname (this is just the name, i.e. localhost or 127.0.0.1; different schemes and ports do not name a different hostname), then you need to separate the session cookies from each other. The simplest method is to simply set different names per app.