I'm trying to integrate the PayPal API into my Node.js application, but I'm encountering the following error when using Axios:

AxiosError: connect ECONNREFUSED 127.0.0.1:XX

Explanation and Troubleshooting:

The error message indicates that the connection to 127.0.0.1:XX (localhost, port xx(xx = any number)) is being refused. This suggests a problem with either:

• PayPal API endpoint: Possible incorrect configuration or a change on PayPal's side.
• Local server: A server might not be running, or firewall rules might be blocking it.

These are the errors:

node:internal/process/promises:279 triggerUncaughtException(err, true /* fromPromise */); ^ AxiosError: connect ECONNREFUSED 127.0.0.1:xx errored: Error: connect ECONNREFUSED 127.0.0.1:xx at TCPConnectWrap.afterConnect [as onplete] (node:net:1187:16)

Code:

payment.controllers.js

import axios from "axios";
import {PAYPAL_API, PAYPAL_API_CLIENT, PAYPAL_API_SECRET} from '../config'

export const createOrder = async (req, res) => {
    const order = {
        intent : 'CAPTURE',
        purchase_units: [
            {
                amount: {
                    currency_code:"USD",
                    value: '2'
                },
                description: "suscription"
            },
        ],
        application_context: {
            brand_name: "pomodoro.app",
            landing_page: "LOGIN",
            user_action: "PAY_NOW",
            return_url: 'http://localhost:4000/capture-order',
            cancel_url: 'http://localhost:4000/cancel-order'
        }
    };

    const response = await axios.post('${PAYPAL_API}/v2/checkout/orders', order, {
        auth: {
            username: PAYPAL_API_CLIENT,
            password: PAYPAL_API_SECRET
        }
    });

    console.log(response)

    res.send('creating order');
}

export const captureOrder = (req, res) => {
    res.send('capture an order')
}

export const cancelOrder = (req, res) => {
    res.send('cancel an order')
}

package.json

{
  
  "keywords": [],
  "author": "",
  "license": "ISC",
  "dependencies": {
    "axios": "^0.27.2",
 
  },
 
}

What I've Tried:

• I've verified my PayPal API credentials (Client ID and Secret).
• I've tried accessing the endpoints http://localhost:3000/create-order and http://localhost:4000/create-order, but neither is working.
• I've checked, and there doesn't seem to be a server running on port xx (xx = any number).

Specific Question:

How can I debug and fix this connection issue to successfully integrate the PayPal API into my Node.js application?

I'm trying to integrate the PayPal API into my Node.js application, but I'm encountering the following error when using Axios:

AxiosError: connect ECONNREFUSED 127.0.0.1:XX

Explanation and Troubleshooting:

The error message indicates that the connection to 127.0.0.1:XX (localhost, port xx(xx = any number)) is being refused. This suggests a problem with either:

• PayPal API endpoint: Possible incorrect configuration or a change on PayPal's side.
• Local server: A server might not be running, or firewall rules might be blocking it.

These are the errors:

node:internal/process/promises:279 triggerUncaughtException(err, true /* fromPromise */); ^ AxiosError: connect ECONNREFUSED 127.0.0.1:xx errored: Error: connect ECONNREFUSED 127.0.0.1:xx at TCPConnectWrap.afterConnect [as onplete] (node:net:1187:16)

Code:

payment.controllers.js

import axios from "axios";
import {PAYPAL_API, PAYPAL_API_CLIENT, PAYPAL_API_SECRET} from '../config'

export const createOrder = async (req, res) => {
    const order = {
        intent : 'CAPTURE',
        purchase_units: [
            {
                amount: {
                    currency_code:"USD",
                    value: '2'
                },
                description: "suscription"
            },
        ],
        application_context: {
            brand_name: "pomodoro.app",
            landing_page: "LOGIN",
            user_action: "PAY_NOW",
            return_url: 'http://localhost:4000/capture-order',
            cancel_url: 'http://localhost:4000/cancel-order'
        }
    };

    const response = await axios.post('${PAYPAL_API}/v2/checkout/orders', order, {
        auth: {
            username: PAYPAL_API_CLIENT,
            password: PAYPAL_API_SECRET
        }
    });

    console.log(response)

    res.send('creating order');
}

export const captureOrder = (req, res) => {
    res.send('capture an order')
}

export const cancelOrder = (req, res) => {
    res.send('cancel an order')
}

package.json

{
  
  "keywords": [],
  "author": "",
  "license": "ISC",
  "dependencies": {
    "axios": "^0.27.2",
 
  },
 
}

What I've Tried:

• I've verified my PayPal API credentials (Client ID and Secret).
• I've tried accessing the endpoints http://localhost:3000/create-order and http://localhost:4000/create-order, but neither is working.
• I've checked, and there doesn't seem to be a server running on port xx (xx = any number).

Specific Question:

How can I debug and fix this connection issue to successfully integrate the PayPal API into my Node.js application?

• javascript
• node.js
• rest
• axios
• paypal

• 1 First; It's probably not so smart to expose the api keys on Stackoverflow even though its for a sandbox environment. And second; Can you include the routes/payment.routes file? – rvanlaarhoven Commented Jul 19, 2022 at 22:35
• Hello, I deleted my API keys thanks for warning me and I included routes/payment.routes – pomoworko. Commented Jul 19, 2022 at 22:40
• 1 The username & password are still visible in the logs :) – rvanlaarhoven Commented Jul 19, 2022 at 22:51
• I think now I deleted all the evidence :) (I think) – pomoworko. Commented Jul 19, 2022 at 22:58

1 Answer 1

You're defining the paypal url as '${PAYPAL_API}/v2/checkout/orders', which will be used exactly as-is and won't actually replace the PAYPAL_API variable due to the single quotes. You should use back ticks instead as template literals (see more info here) like this:

axios.post(`${PAYPAL_API}/v2/checkout/orders`, ...