Creating a PayPal IPN Endpoint With NodeJS - ipn.ctrl.js - With IPN message validation

ipn.ctrl.js

class IPNController { 

  static async index(req, res) {
    // Send 200 status back to PayPal
    res.status(200).send('OK');
    res.end();

    const body = req.body || {};

    // Validate IPN message with PayPal
    try {
      const isValidated = await PayPalService.validate(body);
      if (!isValidated) {
        console.error('Error validating IPN message.');
        return;
      }
      
      // IPN Message is validated!
    } catch(e) {
      console.error(e); 
    }
  }

}

export default IPNController;