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Can`t find JSON Web Token from headers

I have set up JWT to be set in localstorage whenever someone logins or registers. And it works, I can see the token in localstorage. But when I set the token in the headers with axios, node.js in the backend can`t find the token. Like it does not exists. I have checked it in the front end, I get logs of the token in the headers. And also when I request from postman it works. Here is the code.
setAuthToken function = {
const instance = axios.create({
baseURL: "https://localhost:5000",
});
if (token) {
instance.defaults.headers.common["x-auth-token"] = `${token}`;
console.log(instance.defaults.headers.common["x-auth-token"]);
} else {
delete instance.defaults.headers.common["x-auth-token"];
}
}
const loadUser = async () => {
if (localStorage.token) setAuthToken(localStorage.token);
console.log(localStorage.token);
try {
const res = await axios.get("/api/users");
console.log(res);
dispatch({ type: USER_LOADED, payload: res.data });
} catch (err) {
console.log(err.response.data.msg);
dispatch({ type: AUTH_ERROR });
}
The request comes to the await axios statement and goes to catch so error is in the request.
Here is the backend code
// Get current user
router.get("/", auth, async (req, res) => {
try {
const user = await User.findById(req.user.id);
res.status(200).json({ user });
} catch (err) {
console.log(err);
res.status(500).json({ msg: `Server Error` });
}
});
auth middleware function here = {
const token = req.headers["x-auth-token"];
console.log(token, "token in auth.js");
console.log(req.headers, "req.header");
if (!token) {
return res.status(401).json({ msg: `Access denied.` });
}
try {
const decoded = jwt.verify(token, config.get("jwtSecret"));
req.user = decoded.user;
next();
} catch (err) {
res.status(401).json({ msg: `Token is not valid` });
}
}
I`m new to backend develoment and axios. Can someone help me please. Thank you
Here are the console.logs
Logs
Logs
Little update, it looks like there is a problem with proxy, I am using my own backend api, and also movie data base api. So maybe thats why I cant set headers? Here are new logs:
config: Object { url: "/api/users", method: "get", timeout: 0, … }
​
data: "Proxy error: Could not proxy request /api/users from localhost:3000 to http://localhost:5000/ (ECONNREFUSED)."
​
headers: Object { connection: "keep-alive", date: "Wed, 05 May 2021 13:18:05 GMT", "keep-alive": "timeout=5", … }
​
request: XMLHttpRequest { readyState: 4, timeout: 0, withCredentials: false, … }
​
status: 500
​
statusText: "Internal Server Error

I think the issue is because you are setting you are setting up your instance wrongly
set up your instance in a new file config.js -
import Axios from 'axios';
const baseURL = "http://localhost:5000";
const axiosInstance = Axios.create({
baseURL: baseURL,
});
axiosInstance.interceptors.request.use(
function (config) {
const token = localStorage.getItem('token');
if (token) {
config.headers['Authorization'] = 'Bearer ' + token;
}
return config;
},
function (error) {
return Promise.reject(error);
}
);
export default axiosInstance;
now when making any api request instead of using axios use axiosInstance eg-
axiosInstance.get('/something').then(res => console.log(res)).catch(err => console.log(err))

Not able to get the res.json() value from nodejs server

I am using react.js as frontend and nodejs for the backend. My client-side code is
export const updatePaymentDetails = (userId, token, paymentDetails) => {
return fetch(`${API}/user/${userId}`, {
method: "POST",
headers: {
Accept: "application/json",
"Content-Type": "application/json",
Authorization: `Bearer ${token}`
},
body: JSON.stringify(paymentDetails)
})
.then(response => {
console.log(response);
return response.json();
})
.catch(err => console.log(err));
};
And My server-side code is
exports.updateUser = (req, res) => {
User.findByIdAndUpdate(
{_id: req.profile._id},
{$set: req.body},
{new: true, useFindAndModify: false},
(err, user) => {
if(err) {
return res.status(400).json({
error: "You are not authorized to update this user"
});
}
user.salt = undefined;
user.encry_password = undefined;
user.createdAt = undefined;
user.updatedAt = undefined;
console.log(user);
return res.json(user);
}
);
};
Front-end output
In the server-side code, you can see that I am returning the res.json. but On the client-side, I am not getting the value that I have returned from the server.
Please, can anyone help me?

You need to add one more then(). when you call response.json() it also returns a promise apply a then call when you return response.json()

Error when page loads, instead of after form submit?

When I open my local host, I am getting the following error Uncaught (in promise) TypeError: Failed to execute 'fetch' on 'Window': Failed to parse URL from //at getData ((index):60)
Which is pointing to these lines of code
const response = await fetch(url, {
&
getData(`/${url}`)
I'm not sure why I am getting this error when I load the page, as should I only get something like this when I search for something?
This is the larger block of code I am referring to:
document.getElementById('search').addEventListener('submit', function(e) { e.preventDefault(); getData(); })
const form = document.getElementById('Submit')
var formResult = new FormData(form);
const url = '/' + encodeURIComponent(formResult.get("search"));
async function getData(url = '', data = {}) {
const response = await fetch(url, {
method: 'GET',
mode: 'cors',
cache: 'no-cache',
credentials: 'same-origin',
headers: {
'Content-Type': 'application/json'
},
});
return response.json();
}
getData(`/${url}`)
.then(data => {
console.log(data);
})
Any insight would be appreciated.
for clarity on backend:
app.get('/:url', async function (req, res) {
console.log(req.params.url);
try {
await whoisssubmit.init();
const site = await whoisssubmit.open(decodeURIComponent(req.params.url));
const data = await site.analyze();
return res.status(200).json(data);
} catch (ex) {
console.log(ex);
return res.status(500).json({ message : "Oops." });
}});

Actually, you are calling getData() at the end of the snippet that you provided.
// Add url
const url = 'urlToApi';
document.getElementById('search').addEventListener('submit', function(e) { e.preventDefault(); getData(url).then(response => console.log(response)); })
async function getData(url = '', data = {}) {
const response = await fetch(url, {
method: 'GET',
mode: 'cors',
cache: 'no-cache',
credentials: 'same-origin',
headers: {
'Content-Type': 'application/json'
},
});
return response.json();
}

How to resolve Empty error with status code 500 axios?

this is my code :
Express Routes:
router.route('/block')
.post(controller.ticketBlocking);
Express Controller:
const axios = require('axios');
const OAuth = require('oauth-1.0a');
const crypto = require('crypto');
const ticketBlocking = (req, res) => {
const data = JSON.stringify({
source = req.body.source
});
const oauth = OAuth({
consumer: {
key: '....', //Hided the key
secret: '....', //Hided the secret
},
signature_method: 'HMAC-SHA1',
hash_function(base_string, key) {
return crypto.createHmac('sha1', key).update(base_string).digest('base64');
}
});
const request_data = {
url: 'http://link.vvv/blockTicket',
method: 'post',
};
axios({
method: request_data.method,
url: request_data.url,
headers: {
'Content-Type': 'application/json',
Accept: 'application/json',
...oauth.oauth.toHeader(oauth.oauth.authorize(request_data)),
},
data : data
})
.then((response) => {
console.log(JSON.stringify(response.data));
})
.catch(function (error) {
if (error.response) {
console.log(error.response.data);
console.log(error.response.status);
} else if (error.request) {
console.log(error.request);
} else {
console.log('Error', error.message);
}
console.log(error.config);
});
};
the npm package which am using is - "oauth-1.0a"
The problem am facing is, when i use GET method with different end point, i get an output but when ever i use POST method am getting an empty error with status code 500
I dont know where is the mistake, am using oauth1.0a for authorization, please help !

React and NodeJS: How can i use received data from Server on Client?

I want to use received data from server on client . I use a NodeJS Server with NextJS and React.
I use this function on the server:
function addEmailToMailChimp(email, callback) {
var options = {
method: 'POST',
url: 'https://XXX.api.mailchimp.com/3.0/lists/XXX/members',
headers:
{
'Postman-Token': 'XXX',
'Cache-Control': 'no-cache',
Authorization: 'Basic XXX',
'Content-Type': 'application/json'
},
body: { email_address: email, status: 'subscribed' },
json: true
};
request(options, callback);
}
The function will be run from this point:
server.post('/', (req, res) => {
addEmailToMailChimp(req.body.email, (error, response, body) => {
// This is the callback function which is passed to `addEmailToMailChimp`
try {
var respObj = {}; //Initial response object
if (response.statusCode === 200) {
respObj = { success: `Subscribed using ${req.body.email}!`, message: JSON.parse(response.body) };
} else {
respObj = { error: `Error trying to subscribe ${req.body.email}. Please try again.`, message: JSON.parse(response.body) };
}
res.send(respObj);
} catch (err) {
var respErrorObj = { error: 'There was an error with your request', message: err.message };
res.send(respErrorObj);
}
});
})
The try method is used to verify that an email address could be successfully saved to MailChimp. An appropriate message is sent to the client.
On the Client-Side, i use this function to receive and display the data from the server:
handleSubmit() {
const email = this.state.email;
this.setState({email: ""});
fetch('/', {
method: 'POST',
headers: {
'Accept': 'application/json',
'Content-Type': 'application/json'
},
body: JSON.stringify({email:email}),
}).then(res => {
if(res.data.success) {
//If the response from MailChimp is good...
toaster.success('Subscribed!', res.data.success);
this.setState({ email: '' });
} else {
//Handle the bad MailChimp response...
toaster.warning('Unable to subscribe!', res.data.error);
}
}).catch(error => {
//This catch block returns an error if Node API returns an error
toaster.danger('Error. Please try again later.', error.message);
});
}
The problem: The email address is saved successfully at MailChimp, but the message is always displayed: 'Error. Please try again later.'from the .catch area. When i log the error from the catch area i get this:
TypeError: Cannot read property 'success' of undefined
Where is my mistake? I have little experience in Node.js environments. I would be very grateful if you could show me concrete solutions. Thank you for your replies.

With fetch theres no data property on the response. You have to call res.json() and return that promise. From there the response body will be read and deserialized.

handleSubmit() {
const email = this.state.email;
this.setState({email: ""});
fetch('/', {
method: 'POST',
headers: {
'Accept': 'application/json',
'Content-Type': 'application/json'
},
body: JSON.stringify({email:email}),
})
.then(res => {
console.log(res); //to make sure the expected object is returned
if(res.data.success) {
//If the response from MailChimp is good...
toaster.success('Subscribed!', res.data.success);
this.setState({ email: '' });
} else {
//Handle the bad MailChimp response...
toaster.warning('Unable to subscribe!', res.data.error);
}
}).catch(error => {
//This catch block returns an error if Node API returns an error
toaster.danger('Error. Please try again later.', error.message);
});
}

Two things you need to change:
Call and wait for res.json() to get the response body as json object.
The result of 1. is your 'data' object that you can use directly
handleSubmit() {
//...
fetch('/', {
method: 'POST',
headers: {
'Accept': 'application/json',
'Content-Type': 'application/json'
},
body: JSON.stringify({email:email}),
})
.then(res => res.json())
.then(data => {
if(data.success) {
//...
toaster.success('Subscribed!', data.success);
} else {
toaster.warning('Unable to subscribe!', data.error);
}
}).catch(error => {
//...
});
}