res.cookie ist not saved in the browser - node.js

Question

I am currently trying to set up my react application and connect it to my backend. I am using JWT to create web tokens, which I then save via cookieparser.
Server is running on: http://localhost:3000/
Client is running on: http://127.0.0.1:8080/client/public/
Now, I am trying to make a post request from the client (react) and try to store the token (cookie) in the browser but it is not working. It constantly saves the cookie onto the localhost:3000 domain and not on the domain where the client is running. Down below the relevant code for backend and frontend:
**// This is the cors setup for Express**
app.use(cors({ origin: 'http://127.0.0.1:8080', credentials: true }))
**// This is the request router API for creating the user and the cookie (and sending it to the browser)**
router.post('/api/users', async (req, res) => {
const user = new User(req.body)
try {
await user.save()
const token = await user.generateAuthToken()
res.cookie('auth_token', token, { httpOnly: false, sameSite: 'none' })
res.set('Content-Type', 'application/json')
res.send(token)
} catch (e) {
res.status(400).send('Did not work')
}
})
**// This is the request from the client with Axios:**
axios.post('http://localhost:3000/api/users', {
name: this.state.userName,
email: this.state.userEmail,
password: this.state.userPassword,
}, {
withCredentials: true,
credentials: 'include'
})
.then( (response) => {
const data = response
console.log(data)
})
.catch( () => {
console.log('Cant access backend')
})
this.setState({
userName: '',
userEmail: '',
userPassword: ''
})
}
Images:
Setting up cors
this is the api router:
API Router for creating user and sending it to DB
this is the client (frontend) request
Post request to register user with axios
Thank you very much in advance for your help :)

Answer 1

You're storing the cookie in the server. For you to store in the client. Return the cookie and store it using the static js file in the client.
//Returned cookie
document.cookie = "auth_token=token returned by server;